阅读说明：本技术 一种稀土提纯离子交换的自动控制系统及方法 (Automatic control system and method for rare earth purification ion exchange ) 是由 李华杰 于 2021-07-23 设计创作，主要内容包括：本发明涉及稀土提纯技术领域,具体是一种稀土提纯离子交换的自动控制系统及方法,包括上位机控制系统、稀土提纯离子交换的自动控制系统、解吸系统和收集池,上位机控制系统的内部安装有PLC控制系统；稀土提纯离子交换的自动控制系统内包括有若干变频增压泵、若干浮子流量计、若干电子式流量计、若干自动球阀、除杂离子系统、稀土吸附及富集离子交换系统、尾液收集池和氨氮去除离子交换系统。本发明的有益效果提高稀土提纯离子交换控制的便利性,同时提高稀土提纯离子交换的效率,对于尾水中的有价金属元素,可以使用专用解析剂,定向解析得到回收,整个工艺过程是封闭、连续的,降低了劳动强度,提高产品质量和工作效率。(The invention relates to the technical field of rare earth purification, in particular to an automatic control system and a method for rare earth purification ion exchange, which comprises an upper computer control system, an automatic control system for rare earth purification ion exchange, a desorption system and a collection pool, wherein a PLC control system is arranged in the upper computer control system; the automatic control system for rare earth purification ion exchange comprises a plurality of variable frequency booster pumps, a plurality of float flowmeters, a plurality of electronic flowmeters, a plurality of automatic ball valves, an impurity removal ion system, a rare earth adsorption and enrichment ion exchange system, a tail liquid collecting tank and an ammonia nitrogen removal ion exchange system. The invention has the advantages of improving the convenience of rare earth purification ion exchange control, simultaneously improving the efficiency of rare earth purification ion exchange, using a special resolving agent for valuable metal elements in tail water, directionally resolving and recovering, closing and continuously carrying out the whole process, reducing the labor intensity, and improving the product quality and the working efficiency.)

1. An automatic control system for rare earth purification ion exchange is characterized in that: the device comprises an upper computer control system (1), an automatic control system for rare earth purification ion exchange, a desorption system and a collection pool, wherein a PLC control system (2) is arranged in the upper computer control system (1);

the automatic control system for rare earth purification ion exchange comprises a plurality of variable frequency booster pumps, a plurality of float flowmeters, a plurality of electronic flowmeters, a plurality of automatic ball valves, an impurity removal ion system, a midway tank, a rare earth adsorption and enrichment ion exchange system, a sulfur medicament adjusting tank, a tail liquid collecting tank and an ammonia nitrogen removal ion exchange system, wherein the impurity removal ion system comprises a resin tank and a sand tank; the system comprises two resin tanks, wherein one ends of the two resin tanks in the rare earth adsorption and enrichment ion exchange system are connected with automatic ball valves, a stirrer, a quantitative pressure pump and an electronic water level device are arranged in a sulfur reagent opening and adjusting tank and a tail liquid collecting tank, the ammonia nitrogen removal ion exchange system comprises a resin tank and a sand tank, and the output ends of the resin tank and the sand tank in the ammonia nitrogen removal ion exchange system are connected with a plurality of automatic ball valves;

the collecting pool comprises mine rare earth mother liquor, and an ion detector and an electronic water level device are arranged in the collecting pool;

the desorption system comprises a variable-frequency booster pump, a float flowmeter, an electronic flowmeter, a clean water tank, a circulating water tank, a desorption agent tank, an air compressor, a rare earth concentration tank, an impurity concentration tank, an ammonium bicarbonate agent diversion tank and a circulating tank, wherein the clean water tank is internally provided with a water level controller and an electronic water level device, the circulating water tank is internally provided with the electronic water level device, the desorption agent tank is internally provided with a stirrer and the electronic water level device, the air compressor is connected between the variable-frequency booster pump and the float flowmeter, the rare earth concentration tank and the impurity concentration tank are internally provided with the stirrer, a pH measuring instrument and the electronic water level device, the ammonium bicarbonate agent diversion tank is internally provided with the stirrer and the electronic water level device, the ammonium bicarbonate agent diversion tank is connected with a quantitative pressure pump through the quantitative pressure pump and is connected with the input end of the rare earth concentration tank, the internally mounted of circulation pond has the floater water level gauge, the input of circulation pond is connected with the compressor, the input of water pump is connected with pneumatic diaphragm pump, pneumatic diaphragm pump passes through automatic ball valve and is connected with the concentrated pond of tombarthite and the concentrated pond of impurity, the output connection of circulation pond has the booster pump, the input at the catch pit is connected to the output of booster pump.

2. The automatic control system for rare earth purification ion exchange of claim 1, wherein: the output end of the upper computer control system (1) is electrically connected with the input end of the PLC control system (2) through a conducting wire, the output end of the PLC control system (2) is electrically connected with the input end of the stirrer through a conducting wire, and the output end of the PLC control system (2) is electrically connected with the input end of the stirring electronic type flowmeter through a conducting wire.

3. The automatic control system for rare earth purification ion exchange of claim 1, wherein: the output end of the PLC control system (2) is electrically connected with the input end of the quantitative dosing pump through a conductive wire, the output end of the PLC control system (2) is electrically connected with the input end of the automatic ball valve through a conductive wire, and the output end of the PLC control system (2) is electrically connected with the input end of the float flowmeter through a conductive wire.

4. The automatic control system for rare earth purification ion exchange of claim 1, wherein: the output end of the PLC control system (2) forms electric connection with the input end of the automatic variable-frequency booster pump through a conductive wire, the output end of the PLC control system (2) forms electric connection with the input end of the pneumatic diaphragm pump through a conductive wire, and the output end of the PLC control system (2) forms electric connection with the input end of the floating ball water level device through a conductive wire.

5. The automatic control system for rare earth purification ion exchange of claim 1, wherein: the output end of the PLC control system (2) is electrically connected with the input end of the electronic water level gauge through a conductive wire, the output end of the PLC control system (2) is electrically connected with the input end of the ion detector through a conductive wire, and the output end of the PLC control system (2) is electrically connected with the input end of the ph measuring instrument through a conductive wire.

6. The automatic control system for rare earth purification ion exchange of claim 1, wherein: the output end of the PLC control system (2) is electrically connected with the input end of the booster pump through a conducting wire, and the output end of the PLC control system (2) is electrically connected with the input end of the compressor through a conducting wire.

7. An automatic control method for rare earth purification ion exchange is characterized in that: the S1: conveying the mine rare earth mother liquor to the interior of a collecting tank; s2: conveying the mine rare earth mother liquor to the interior of a collecting tank; s3: clear water is injected into a clear water tank, a circulating water tank and a desorption agent tank of the desorption system, and then liquid in the clear water tank, the circulating water tank and the desorption agent tank is connected with an electronic flowmeter through an automatic ball valve, a variable-frequency booster pump, a float flowmeter and an air compressor, wherein the air compressor is connected between the variable-frequency booster pump and the float flowmeter; s4: the part of liquid enters a rare earth concentration pool, a stirrer is started to stir, meanwhile, a medicament in an ammonium bicarbonate medicament regulating pool is conveyed to the rare earth concentration pool through a quantitative medicament feeding pump, and the measurement is carried out through a pH measuring instrument; the other part of the liquid enters an impurity concentration tank, a stirrer is started to stir, meanwhile, the agent in the ammonium bicarbonate agent regulating tank is conveyed to the impurity concentration tank through a quantitative dosing pump, and the pH value is measured through a pH measuring instrument; s5: the rare earth concentration tank and the impurity concentration tank pass through a compressor to obtain high-purity rare earth carbonate, impurity waste residues and circulating liquid; s6: and the circulating liquid enters the circulating pool, and the circulating liquid in the circulating pool is conveyed into the mine through the booster pump.

8. The automatic control method of rare earth purification ion exchange according to claim 7, wherein: in the S2, H1: the S2 liquid enters an automatic control system of rare earth purification ion exchange, is processed by a sand tank and a resin tank in an internal impurity removal ion system, then enters a midway pool, and then enters a rare earth adsorption and enrichment ion exchange system through a variable frequency booster pump, a float flowmeter and an automatic ball valve; h2: the liquid entering the rare earth adsorption and enrichment ion exchange system is conveyed to two resin tanks inside for treatment; h3: the liquid obtained by the treatment enters a tail liquid collecting pool, and then the medicament kneaded by the sulfur medicament opening and adjusting groove is conveyed into the tail liquid collecting pool through a quantitative pressurizing pump; h4: the liquid obtained by the treatment enters a sand tank and a resin tank in the ammonia nitrogen removal ion exchange system, the waste material reaches the discharge standard after being treated, and meanwhile, the output ends of the sand tank and the resin tank are connected with A and B.

9. The automatic control method of rare earth purification ion exchange according to claim 8, wherein: the collecting tank adopts A, B two sets of ion exchange equipment to handle, and the PLC control system adopts A, B two sets of ion exchange equipment on connecting the switch of controlling two A, B two sets of ion exchange equipment to automatic control system realizes two sets of equipment alternate use, and when A exchange equipment resin adsorption is close to saturation, the feeding stops and the analysis begins.

10. The automatic control method of rare earth purification ion exchange according to claim 8, wherein: the collecting tank adopts A, B sets of ion exchange equipment for processing, meanwhile, B exchange equipment is started to start feeding, and when the resin adsorption is close to saturation, feeding is stopped to enter an analysis stage; and starting the A switching equipment again, thereby cycling the work.

Technical Field

The invention relates to the technical field of rare earth purification, in particular to an automatic control system and method for rare earth purification ion exchange.

Background

The mining of ionic rare earths belongs to the category of chemical solution mining, and leachate in the mining process always contains a large amount of impurities, such as iron, aluminum, silicon, calcium, silicates and the like, which must be removed before further processing. At present, a chemical method, a method adopting a medicament, pH adjustment and solvent extraction are time-consuming, high in cost and low in efficiency, a large amount of chemical agents are used to cause environmental contamination, and wastewater containing multiple elements after impurity removal cannot be recycled if the wastewater is not treated. The separation of impurities to improve purity is one of the important links in metallurgical engineering, and different reagents and methods must be adopted to process the elements according to the same physicochemical properties as the compounds and the slight difference between the elements.

Ion exchange refers to ion exchange between two electrolytes or between an electrolyte solution and a complex. Technology has been continually optimized in recent years both at home and abroad for the purification, separation and clarification of water and other ion-containing solutions with solid polymer or mineral "ion exchangers". Ion exchange is a rapid and reversible process in which impurity ions present in solution are selectively replaced by ions released from the ion exchange resin. Because the ion exchange process is continuously perfected, the novel exchange resin is developed and applied, and the purification process has an enrichment function, the research on the purification of the rare earth leaching solution by adopting the ion exchange process is carried out by a plurality of units, and the individual units also carry out industrial tests to obtain better effect.

Chinese patent No. CN104498741B provides a rare earth purification method and an electric heating furnace. Heating and purifying the rare earth raw material in an electric heating furnace, wherein the purification process comprises three heating stages: heating at medium temperature of 480 ℃ and 520 ℃ for 35-45 minutes; heating at high temperature, wherein the heating temperature is 950 ℃ and 1000 ℃, and the heating time is 35-45 minutes; low temperature heating at 220 deg.c for 35-45 min. The rare earth purification method adopts electric heating, can accurately control the heating temperature, thoroughly remove impurities, has high purity of rare earth in the product, can reach 82 percent of purification degree, and is green and environment-friendly in the production process.

The existing rare earth purification ion and rare earth purification ion exchange control is relatively convenient, so that the efficiency of rare earth purification ion exchange is relatively low, valuable metal elements in tail water cannot be directionally analyzed and recovered, the whole process is not totally closed and continuous, the environmental protection is relatively low, the labor intensity is increased, the defects of relatively poor product quality and relatively low working efficiency are caused, and the development of an automatic control system and method for rare earth purification ion exchange is urgently needed.

Disclosure of Invention

The invention aims to provide an automatic control system and method for rare earth purification ion exchange, which aim to solve the problems that the efficiency of rare earth purification ion exchange is relatively low and valuable metal elements in tail water cannot be directionally analyzed and recovered due to the relative convenience of rare earth purification ion exchange control in the background technology.

The technical scheme of the invention is as follows: an automatic control system for rare earth purification ion exchange comprises an upper computer control system, an automatic control system for rare earth purification ion exchange, a desorption system and a collection pool, wherein a PLC control system is installed in the upper computer control system;

the automatic control system for rare earth purification ion exchange comprises a plurality of variable frequency booster pumps, a plurality of float flowmeters, a plurality of electronic flowmeters, a plurality of automatic ball valves, an impurity removal ion system, a midway tank, a rare earth adsorption and enrichment ion exchange system, a sulfur medicament adjusting tank, a tail liquid collecting tank and an ammonia nitrogen removal ion exchange system, wherein the impurity removal ion system comprises a resin tank and a sand tank; the system comprises two resin tanks, wherein one ends of the two resin tanks in the rare earth adsorption and enrichment ion exchange system are connected with automatic ball valves, a stirrer, a quantitative pressure pump and an electronic water level device are arranged in a sulfur reagent opening and adjusting tank and a tail liquid collecting tank, the ammonia nitrogen removal ion exchange system comprises a resin tank and a sand tank, and the output ends of the resin tank and the sand tank in the ammonia nitrogen removal ion exchange system are connected with a plurality of automatic ball valves;

the collecting pool comprises mine rare earth mother liquor, and an ion detector and an electronic water level device are arranged in the collecting pool;

the desorption system comprises a variable-frequency booster pump, a float flowmeter, an electronic flowmeter, a clean water tank, a circulating water tank, a desorption agent tank, an air compressor, a rare earth concentration tank, an impurity concentration tank, an ammonium bicarbonate agent diversion tank and a circulating tank, wherein the clean water tank is internally provided with a water level controller and an electronic water level device, the circulating water tank is internally provided with the electronic water level device, the desorption agent tank is internally provided with a stirrer and the electronic water level device, the air compressor is connected between the variable-frequency booster pump and the float flowmeter, the rare earth concentration tank and the impurity concentration tank are internally provided with the stirrer, a pH measuring instrument and the electronic water level device, the ammonium bicarbonate agent diversion tank is internally provided with the stirrer and the electronic water level device, the ammonium bicarbonate agent diversion tank is connected with a quantitative pressure pump through the quantitative pressure pump and is connected with the input end of the rare earth concentration tank, the internally mounted of circulation pond has the floater water level gauge, the input of circulation pond is connected with the compressor, the input of water pump is connected with pneumatic diaphragm pump, pneumatic diaphragm pump passes through automatic ball valve and is connected with the concentrated pond of tombarthite and the concentrated pond of impurity, the output connection of circulation pond has the booster pump, the input at the catch pit is connected to the output of booster pump.

Furthermore, the output end of the upper computer control system is electrically connected with the input end of the PLC control system through a conducting wire, the output end of the PLC control system is electrically connected with the input end of the stirrer through a conducting wire, and the output end of the PLC control system is electrically connected with the input end of the stirring electronic type flowmeter through a conducting wire.

Furthermore, the output end of the PLC control system is electrically connected with the input end of the quantitative dosing pump through a conductive wire, the output end of the PLC control system is electrically connected with the input end of the automatic ball valve through a conductive wire, and the output end of the PLC control system is electrically connected with the input end of the float flowmeter through a conductive wire.

Furthermore, the output end of the PLC control system forms an electric connection with the input end of the automatic variable-frequency booster pump through a conductive wire, the output end of the PLC control system forms an electric connection with the input end of the pneumatic diaphragm pump through a conductive wire, and the output end of the PLC control system forms an electric connection with the input end of the floating ball water level device through a conductive wire.

Furthermore, the output end of the PLC control system is electrically connected with the input end of the electronic water level gauge through a conductive wire, the output end of the PLC control system is electrically connected with the input end of the ion detector through a conductive wire, and the output end of the PLC control system is electrically connected with the input end of the ph measuring instrument through a conductive wire.

Furthermore, the output end of the PLC control system is electrically connected with the input end of the booster pump through a conducting wire, and the output end of the PLC control system is electrically connected with the input end of the compressor through a conducting wire.

An automatic control method for rare earth purification ion exchange, wherein the S1: conveying the mine rare earth mother liquor to the interior of a collecting tank; s2: conveying the mine rare earth mother liquor to the interior of a collecting tank; s3: clear water is injected into a clear water tank, a circulating water tank and a desorption agent tank of the desorption system, and then liquid in the clear water tank, the circulating water tank and the desorption agent tank is connected with an electronic flowmeter through an automatic ball valve, a variable-frequency booster pump, a float flowmeter and an air compressor, wherein the air compressor is connected between the variable-frequency booster pump and the float flowmeter; s4: the part of liquid enters a rare earth concentration pool, a stirrer is started to stir, meanwhile, a medicament in an ammonium bicarbonate medicament regulating pool is conveyed to the rare earth concentration pool through a quantitative medicament feeding pump, and the measurement is carried out through a pH measuring instrument; the other part of the liquid enters an impurity concentration tank, a stirrer is started to stir, meanwhile, the agent in the ammonium bicarbonate agent regulating tank is conveyed to the impurity concentration tank through a quantitative dosing pump, and the pH value is measured through a pH measuring instrument; s5: the rare earth concentration tank and the impurity concentration tank pass through a compressor to obtain high-purity rare earth carbonate, impurity waste residues and circulating liquid; s6: and the circulating liquid enters the circulating pool, and the circulating liquid in the circulating pool is conveyed into the mine through the booster pump.

Further, in S2, H1: the S2 liquid enters an automatic control system of rare earth purification ion exchange, is processed by a sand tank and a resin tank in an internal impurity removal ion system, then enters a midway pool, and then enters a rare earth adsorption and enrichment ion exchange system through a variable frequency booster pump, a float flowmeter and an automatic ball valve; h2: the liquid entering the rare earth adsorption and enrichment ion exchange system is conveyed to two resin tanks inside for treatment; h3: the liquid obtained by the treatment enters a tail liquid collecting pool, and then the medicament kneaded by the sulfur medicament opening and adjusting groove is conveyed into the tail liquid collecting pool through a quantitative pressurizing pump; h4: the liquid obtained by the treatment enters a sand tank and a resin tank in the ammonia nitrogen removal ion exchange system, the waste material reaches the discharge standard after being treated, and meanwhile, the output ends of the sand tank and the resin tank are connected with A and B.

Furthermore, the collecting pool adopts A, B sets of ion exchange equipment for processing, the PLC control system is connected with switches for controlling the two A, B sets of ion exchange equipment, A, B sets of ion exchange equipment are adopted, the two sets of equipment are alternately used by the automatic control system, and when the resin adsorption of the A exchange equipment is close to saturation, feeding is stopped and analysis is started.

Furthermore, the collecting pool adopts A, B sets of ion exchange equipment for processing, meanwhile, B exchange equipment is started to start feeding, and when the resin adsorption is close to saturation, feeding is stopped to enter an analysis stage; and starting the A switching equipment again, thereby cycling the work.

The invention provides an automatic control system and method for rare earth purification ion exchange by improvement, compared with the prior art, the automatic control system and method have the following improvement and advantages:

(1) according to the invention, the automatic control system is adopted, and the upper computer control system automatically controls the electric device in the rare earth purification ion exchange system through the PLC control system, so that the convenience of rare earth purification ion exchange control is improved, and meanwhile, the efficiency of rare earth purification ion exchange is improved.

(2) The invention adopts the ion exchange process, the concentration range of the rare earth leachate received by the ion exchange process is very wide, particularly for the leachate with extremely low concentration, the enrichment effect is very good, when the concentration of the rare earth liquid is 0.02g/L, the concentration of the rare earth liquid reaches 4g/L at one time through ion exchange, and the concentration is about 200 times, therefore, the rare earth leachate after mining of a mine is purified by an ion exchange system to obtain high-concentration rare earth liquid, impurities in tail water can be removed through the ion exchange process again to reach the discharge standard or return to prepare the mineral leaching agent, and valuable metal elements in the tail water can be directionally resolved and recovered by using a special resolving agent.

(3) The invention adopts the ion exchange process, the ion exchange process is in the rare earth purification process, even if the rare earth liquid has extremely low concentration or high aluminum content, the treatment method and the effect are consistent, the REO in the product can generally reach more than 98 percent, if the valuable metal elements are directionally analyzed, the aluminum oxide or the aluminum hydroxide can be easily recovered, and the added value of the product is improved.

(4) The invention adopts the rare earth purification ion exchange process which is industrially applied, the high-efficiency use requirement can be met only by adopting the mechanization and automation control technology, and the whole process is closed and continuous after the automatic operation is realized, thereby increasing the environmental protection intensity, reducing the labor intensity and improving the product quality and the working efficiency.

Drawings

The invention is further explained below with reference to the figures and examples:

FIG. 1 is a schematic structural diagram of a host computer control system according to the present invention;

FIG. 2 is a schematic diagram of an automatic control system and a desorption system for ion purification exchange according to the present invention;

FIG. 3 is a schematic diagram of the control system control architecture of the present invention;

FIG. 4 is a PLC control system control schematic of the present invention;

FIG. 5 is a schematic diagram of the method of the present invention.

Description of reference numerals:

1 an upper computer control system and 2 a PLC control system.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 5, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides an automatic control system for rare earth purification ion exchange by improvement, which comprises an upper computer control system 1, an automatic control system for rare earth purification ion exchange, a desorption system and a collection pool, wherein the upper computer control system 1 is internally provided with a PLC (programmable logic controller) control system 2, and the upper computer control system 1 automatically controls electric devices in the rare earth purification ion exchange system through the PLC control system 2, so that the convenience of rare earth purification ion exchange control is improved, and the efficiency of rare earth purification ion exchange is improved;

the automatic control system for rare earth purification ion exchange comprises a plurality of variable frequency booster pumps, a plurality of float flowmeters, a plurality of electronic flowmeters, a plurality of automatic ball valves, an impurity removal ion system, a midway tank, a rare earth adsorption and enrichment ion exchange system, a sulfur medicament adjusting tank, a tail liquid collecting tank and an ammonia nitrogen removal ion exchange system, wherein the impurity removal ion system comprises a resin tank and a sand tank; one end of each of the two resin tanks in the rare earth adsorption and enrichment ion exchange system is connected with an automatic ball valve, a stirrer, a quantitative pressure pump and an electronic water level device are installed in the sulfur reagent adjusting tank and the tail liquid collecting tank, the inside of the ammonia nitrogen removal ion exchange system comprises a resin tank and a sand tank, and the output ends of the resin tank and the sand tank in the ammonia nitrogen removal ion exchange system are connected with a plurality of automatic ball valves;

the collecting tank comprises mine rare earth mother liquor, and an ion detector and an electronic water level device are arranged in the collecting tank;

the desorption system comprises a variable-frequency booster pump, a float flowmeter, an electronic flowmeter, a clear water tank, a circulating water tank, a desorption agent tank, an air compressor, a rare earth concentration tank, an impurity concentration tank, an ammonium bicarbonate reagent adjusting tank and a circulating tank, wherein a water level controller and an electronic water level device are installed in the clear water tank, the electronic water level device is installed in the circulating water tank, a stirrer and an electronic water level device are installed in the desorption agent tank, the air compressor is connected between the variable-frequency booster pump and the float flowmeter, the stirrer, a pH measuring instrument and the electronic water level device are installed in the rare earth concentration tank and the impurity concentration tank, the stirrer and the electronic water level device are installed in the ammonium bicarbonate reagent adjusting tank, the ammonium bicarbonate reagent adjusting tank is connected with a quantitative pressure pump, the ammonium bicarbonate reagent adjusting tank is connected with the input end of the rare earth concentration tank through the quantitative pressure pump, and a water level floater is installed in the circulating tank, the input of circulation pond is connected with the compressor, and the input of water pump is connected with pneumatic diaphragm pump, and pneumatic diaphragm pump passes through automatic ball valve and is connected with the concentrated pond of tombarthite and the concentrated pond of impurity, and the output in circulation pond has the booster pump, and the input at the catch pit is connected to the output of booster pump.

Further, the output end of the upper computer control system 1 is electrically connected with the input end of the PLC control system 2 through a conducting wire, the output end of the PLC control system 2 is electrically connected with the input end of the stirrer through a conducting wire, and the output end of the PLC control system 2 is electrically connected with the input end of the stirring electronic type flowmeter through a conducting wire.

Further, the output end of the PLC control system 2 is electrically connected with the input end of the quantitative dosing pump through a conductive wire, the output end of the PLC control system 2 is electrically connected with the input end of the automatic ball valve through a conductive wire, and the output end of the PLC control system 2 is electrically connected with the input end of the float flowmeter through a conductive wire.

Further, the output end of the PLC control system 2 is electrically connected with the input end of the automatic variable frequency booster pump through a conductive wire, the output end of the PLC control system 2 is electrically connected with the input end of the pneumatic diaphragm pump through a conductive wire, and the output end of the PLC control system 2 is electrically connected with the input end of the floating ball water level device through a conductive wire.

Further, the output end of the PLC control system 2 is electrically connected with the input end of the electronic water level gauge through a conducting wire, the output end of the PLC control system 2 is electrically connected with the input end of the ion detector through a conducting wire, and the output end of the PLC control system 2 is electrically connected with the input end of the ph measuring instrument through a conducting wire.

Further, the output end of the PLC control system 2 is electrically connected with the input end of the booster pump through a conducting wire, and the output end of the PLC control system 2 is electrically connected with the input end of the compressor through a conducting wire.

An automatic control method for rare earth purification ion exchange, S1: conveying the mine rare earth mother liquor to the interior of a collecting tank; s2: conveying the mine rare earth mother liquor to the interior of a collecting tank; s3: clear water is injected into a clear water tank, a circulating water tank and a desorption agent tank of the desorption system, and then liquid in the clear water tank, the circulating water tank and the desorption agent tank is connected with an electronic flowmeter through an automatic ball valve, a variable-frequency booster pump, a float flowmeter and an air compressor, wherein the air compressor is connected between the variable-frequency booster pump and the float flowmeter; s4: the part of liquid enters a rare earth concentration pool, a stirrer is started to stir, meanwhile, a medicament in an ammonium bicarbonate medicament regulating pool is conveyed to the rare earth concentration pool through a quantitative medicament feeding pump, and the measurement is carried out through a pH measuring instrument; the other part of the liquid enters an impurity concentration tank, a stirrer is started to stir, meanwhile, the agent in the ammonium bicarbonate agent regulating tank is conveyed to the impurity concentration tank through a quantitative dosing pump, and the pH value is measured through a pH measuring instrument; s5: the rare earth concentration tank and the impurity concentration tank pass through a compressor to obtain high-purity rare earth carbonate, impurity waste residues and circulating liquid; s6: and the circulating liquid enters the circulating pool, and the circulating liquid in the circulating pool is conveyed into the mine through the booster pump.

Further, in S2, H1: the S2 liquid enters an automatic control system of rare earth purification ion exchange, is processed by a sand tank and a resin tank in an internal impurity removal ion system, then enters a midway pool, and then enters a rare earth adsorption and enrichment ion exchange system through a variable frequency booster pump, a float flowmeter and an automatic ball valve; h2: the liquid entering the rare earth adsorption and enrichment ion exchange system is conveyed to two resin tanks inside for treatment; h3: the liquid obtained by the treatment enters a tail liquid collecting pool, and then the medicament kneaded by the sulfur medicament opening and adjusting groove is conveyed into the tail liquid collecting pool through a quantitative pressurizing pump; h4: the liquid obtained by the treatment enters a sand tank and a resin tank in the ammonia nitrogen removal ion exchange system, the waste material reaches the discharge standard after being treated, and meanwhile, the output ends of the sand tank and the resin tank are connected with A and B.

Furthermore, the collecting pool adopts A, B sets of ion exchange equipment for processing, the PLC control system is connected with switches for controlling the two A, B sets of ion exchange equipment, A, B sets of ion exchange equipment are adopted, the two sets of equipment are alternately used by the automatic control system, and when the resin adsorption of the A exchange equipment is close to saturation, the feeding is stopped and the analysis is started.

Further, the collecting pool adopts A, B sets of ion exchange equipment for processing, meanwhile, B exchange equipment is started to start feeding, and when the resin adsorption is close to saturation, feeding is stopped to enter an analysis stage; and starting the A switching equipment again, thereby cycling the work.

The working principle is as follows: conveying the mine rare earth mother liquor to the interior of a collecting tank, injecting clean water in the mine rare earth mother liquor conveyed to the interior of the collecting tank into a clean water tank, a circulating water tank and a desorption agent tank of a desorption system, then sequentially passing liquid in the clean water tank, the circulating water tank and the desorption agent tank through an automatic ball valve, a variable frequency booster pump, a float flowmeter and an electronic flowmeter, wherein an air compressor is connected between the variable frequency booster pump and the float flowmeter, and then entering the part of liquid into a rare earth concentration tank, starting a stirrer for stirring, simultaneously conveying the agent in a ammonium bicarbonate agent regulating tank into the rare earth concentration tank through a quantitative dosing pump, measuring the other part of liquid by a pH measuring instrument and entering an impurity concentration tank, starting the stirrer for stirring, simultaneously conveying the agent in the ammonium bicarbonate agent regulating tank into the impurity concentration tank by the quantitative dosing pump, and passing the rare earth concentration tank and the impurity concentration tank through the compressor by the pH measuring instrument, and the obtained high-purity rare earth carbonate, impurity waste residues and circulating liquid enter a circulating pool, and the circulating liquid in the circulating pool is conveyed into a mine through a booster pump.

Conveying mine rare earth mother liquor to the interior of a collecting tank, conveying the mine rare earth mother liquor to the interior of the collecting tank, then entering an automatic control system for rare earth purification ion exchange, processing by a sand tank and a resin tank in an internal impurity removal ion system, then entering a midway tank, then conveying liquid into a rare earth adsorption and enrichment ion exchange system through a variable frequency booster pump, a float flowmeter and an automatic ball valve, conveying the liquid into two resin tanks in the rare earth adsorption and enrichment ion exchange system, processing to obtain liquid, entering a tail liquor collecting tank, conveying the processed liquid into the tail liquor collecting tank through a quantitative pressure pump to obtain a liquid, conveying the processed liquid into the sand tank and the resin tank in an ammonia nitrogen removal ion exchange system, and treating waste materials to reach a discharge standard, meanwhile, the output ends of the sand tank and the resin tank are connected with A and B.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.