阅读说明：本技术 利用海水基溶液强化硫化铜矿浸出实验装置及方法 (Experimental device and method for reinforcing copper sulfide ore leaching by using seawater-based solution ) 是由 尹升华 王雷鸣 周根茂 吴爱祥 陈勋 严荣富 陈威 宋庆 于 2020-06-28 设计创作，主要内容包括：本发明提供一种利用海水基溶液强化硫化铜矿浸出实验装置及方法,属于硫化铜矿浸出技术领域。该装置包括储液罐、出液阀门、回流液阀门、搅拌电机、搅拌叶片、离子溶液罐、海水储罐、液体流量计、汇流阀门、pH传感器、氧化还原电位传感器、Cu<Sup>2+</Sup>离子传感器、Fe<Sup>3+</Sup>离子传感器、水浴控温层、导流直管、固定板、固定螺栓、反应柱顶板、数据集成计算机、反应柱、多孔隔板、排液阀门、集液罐、蠕动泵、入水口、水浴控温仪和出水口。该装置结构简单、可视化程度高,为揭示Fe<Sup>3+</Sup>、Cu<Sup>2+</Sup>等关键离子对浸出的影响机制提供了有效装置与方法,为工业海基水溶液强化硫化铜矿浸出提供良好借鉴。(The invention provides an experimental device and method for strengthening copper sulfide ore leaching by using a seawater-based solution, and belongs to the technical field of copper sulfide ore leaching. The device comprises a liquid storage tank, a liquid outlet valve, a reflux valve, a stirring motor, stirring blades, an ionic solution tank, a seawater storage tank, a liquid flowmeter, a confluence valve, a pH sensor, an oxidation-reduction potential sensor and Cu 2+ Ion sensor and Fe 3+ The device comprises an ion sensor, a water bath temperature control layer, a flow guide straight pipe, a fixing plate, a fixing bolt, a reaction column top plate, a data integration computer, a reaction column, a porous partition plate, a liquid discharge valve, a liquid collection tank, a peristaltic pump, a water inlet, a water bath temperature control instrument and a water outlet. The device has simple structure and high visualization degree, and is used for revealing Fe 3+ 、Cu 2+ The influence mechanism of plasma key ions on leaching is provided withThe effect device and the method provide good reference for strengthening the leaching of the copper sulfide ore by the industrial sea-based aqueous solution.)

1. The utility model provides an utilize sea water base solution to strengthen copper sulphide ore and leach experimental apparatus which characterized in that: including sea water base solution preparation system, spray circulating system, water bath temperature control system and data acquisition visual system, wherein, sea water base solution preparation system includes liquid storage pot (1), go out liquid valve (2), backward flow liquid valve (3), agitator motor (4), stirring vane (5), ionic solution jar (6), sea water storage tank (7), fluidflowmeter (8) and confluence valve (9), spray circulating system includes water conservancy diversion straight tube (15), fixed plate (16), fixing bolt (17), reaction column roof (18), reaction column (20), porous baffle (21), flowing back valve (22), collect liquid jar (23) and peristaltic pump (24), water bath temperature control system includes water bath temperature control layer (14), water inlet (25), water bath temperature control appearance (26) and delivery port (27), data acquisition visual system includes pH sensor (10), Oxidation-reduction potential sensor (11), Cu²⁺Ion sensor (12), Fe³⁺An ion sensor (13) and a data integration computer (19); a liquid outlet valve (2) is arranged at the bottom of a liquid storage tank (1), a reflux valve (3) and a confluence valve (9) are arranged at the upper part of the liquid storage tank (1), liquid flow meters (8) are respectively arranged at the bottoms of an ionic solution tank (6) and a seawater storage tank (7), a stirring motor (4) is fixed above the liquid storage tank (1), a stirring blade (5) is connected below the stirring motor (4), the stirring blade (5) extends into the liquid storage tank (1), a fixing bolt (17) is matched with a reaction column top plate (18) to fixedly connect a fixing plate (16) with a reaction column (20), a flow guide straight pipe (15) is fixed by the fixing plate (16), the lower end of the flow guide straight pipe (15) is opposite to the reaction column (20), a porous partition plate (21) is arranged at the inner side of the reaction column (20), a liquid discharge valve (22) is arranged at the bottom of the reaction, the liquid collection tank (23) is connected with the liquid storage tank (1) through the peristaltic pump (24), the water bath temperature control layer (14) is arranged outside the liquid storage tank (1), the reaction column (20) and the liquid collection tank (23), the lower part of the water bath temperature control layer (14) is provided with a water inlet (25), the upper part of the water bath temperature control layer (14) is provided with a water outlet (27), and the water bath solution is adjusted in temperature through the water bath temperature control instrument (26) and is subjected to temperature adjustmentA peristaltic pump (27) for circularly pumping, wherein a pH sensor (10), an oxidation-reduction potential sensor (11) and a Cu are fixed at the bottom of the inner side of the liquid storage tank (1) and the liquid collection tank (23)²⁺Ion sensor (12) and Fe³⁺Probe of ion sensor (13), pH sensor (10), oxidation-reduction potential sensor (11), Cu²⁺Ion sensor (12) and Fe³⁺The electric signals collected by the ion sensor (13) are all collected to a data integration computer (19).

2. The experimental facility for reinforcing leaching of copper sulphide ore by using seawater-based solution as claimed in claim 1, wherein: the ionic solution tanks (6) are of parallel structures, the number of the ionic solution tanks is not less than 3, and ionic solutions and acid liquor with set concentrations are filled in the ionic solution tanks (6); untreated seawater is filled in the seawater storage tank (7).

3. The experimental facility for reinforcing leaching of copper sulphide ore by using seawater-based solution as claimed in claim 1, wherein: the solution in the ionic solution tank (6) and the seawater storage tank (7) enters the liquid storage tank (1) through the liquid flowmeter (8) and the confluence valve (9), and the stirring motor (4) drives the stirring blade (5) to rotate to homogenize and stir the solution to obtain the sea-based aqueous solution.

4. The experimental facility for reinforcing leaching of copper sulphide ore by using seawater-based solution as claimed in claim 1, wherein: the pH sensor (10), the oxidation-reduction potential sensor (11), and Cu²⁺Ion sensor (12) and Fe³⁺The ion sensor (13) is immersed below the interface of the solution in the liquid collection tank (23) and the liquid storage tank (1).

5. The experimental facility for reinforcing leaching of copper sulphide ore by using seawater-based solution as claimed in claim 1, wherein: the reaction column (20) is matched with the water bath temperature control layer (14) by a water bath temperature control instrument (26) to control the internal temperature of the reaction column (20).

6. The experimental facility for reinforcing leaching of copper sulphide ore by using seawater-based solution as claimed in claim 1, wherein: the liquid flowmeter (8) controls the addition amount of different ionic solutions; the data integration computer (19) displays the ionic composition of the seawater-based solution in the liquid collection tank (23) and the leaching environment.

7. The method for strengthening the leaching experimental facility of the copper sulphide ore by using the seawater-based solution as claimed in claim 1 is characterized in that: the method comprises the following steps:

s1: before a copper sulfide ore leaching experiment is started, liquid in a liquid storage tank (1), a liquid collection tank (23), an ionic solution tank (6), a seawater storage tank (7) and a reaction column (20) is emptied and dried; carrying out ore piling in the reaction column (20) and sealing the reaction column (20);

s2: starting a water bath temperature control instrument (26) and a peristaltic pump (24), preheating the liquid storage tank (1), the liquid collection tank (23) and the reaction column (20) by using the water bath temperature control layer (14), and adjusting the temperature to a target temperature;

s3: according to research requirements, different ionic solutions and acid liquor are respectively placed in an ionic solution tank (6), and seawater is placed in a seawater storage tank (7);

s4: injecting seawater into the liquid storage tank (1) from a seawater storage tank (7) by using a liquid flowmeter (8), and starting a stirring motor (4) to drive a stirring blade (5) to rotate; when the liquid storage tank (1) reaches the target temperature and keeps constant, the pH sensor (10), the oxidation-reduction potential sensor (11) and the Cu are utilized²⁺Ion sensor (12) and Fe³⁺An ion sensor (13) measures the pH value, oxidation-reduction potential and Cu of the solution respectively²⁺Concentration, Fe³⁺Concentration;

s5: injecting at least one ionic solution in the ionic liquid storage tank (6) into the liquid storage tank (1) through a liquid flowmeter (8), and quantitatively representing the solution environment through a data integration computer (19); carrying out data feedback, adjusting the liquid flowmeter (8) again to obtain the required seawater-based solution, and then closing the liquid flowmeter (8);

s6: pumping the sea-based aqueous solution in the liquid storage tank (1) to a diversion straight pipe (15) by using a peristaltic pump (24), uniformly spraying the sea-based aqueous solution to the upper surface of an ore pile in a reaction column (20), allowing the leaching pregnant solution to flow out to a liquid collection tank (23) through a porous partition plate (21) and a liquid discharge valve (22), and using a pH sensor(10) An oxidation-reduction potential sensor (11), Cu²⁺Ion sensor (12), Fe³⁺The ion sensor (13) and the data integration computer (19) realize the recording and displaying of experimental data;

s7: the seawater-based solution in the liquid collection tank (23) is sent to the liquid storage tank (1) through the peristaltic pump (24) to participate in the copper sulfide ore leaching reaction again, and a closed circulation of the seawater-based solution is formed.

Technical Field

The invention relates to the technical field of copper sulfide ore leaching, in particular to an experimental device and method for strengthening copper sulfide ore leaching by using seawater-based solution.

Background

Copper sulfide ore resources in China are poor in innate endowment, mineral composition is complex, the symbiotic accompanying phenomenon of various valuable minerals such as chalcopyrite and chalcocite is common, the average grade of copper is only about 1.45%, and about 20% of copper ores in the world depend on leaching mining technology. However, there are two main limitations currently restricting the leaching of copper sulphide ores: firstly, the reaction process is slow and complicated in the leaching process, the passivation phenomenon is obvious, the copper leaching efficiency is not good, and the added FeCl is explored through the latest research₃Solution, CuCl₂The leaching environment of the solution and the like to the copper sulfide ore, including factors such as the pH value, the oxidation-reduction potential (ORP), the temperature and the like of the solution, can effectively adjust the leaching process; secondly, a large amount of industrial water is consumed in the leaching process, the operation difficulty is high and the cost is high in arid water-deficient areas, and the leaching of the copper sulfide ore can be effectively enhanced by adopting a seawater-based solution, a salt solution or purified seawater to replace industrial purified water in latest research and exploration.

The seawater-based solution is prepared by adding an ionic solution or removing certain ions in seawater in a targeted manner according to research and industrial application requirements by using seawater as a substrate solution to finally obtain a seawater-based solution containing key anions and cations (including Fe)³⁺、Cu²⁺、Cl^-Etc.) of the leaching solution. Tong (Chinese character of 'tong')Through the targeted change of chemical components of the leaching solution, effective regulation and control of factors restricting reaction rate such as oxidation-reduction potential, reaction activation energy and the like of the leaching solution are realized, and finally, the leaching process is remarkably strengthened, which is an important hotspot and difficulty in the strengthening leaching research of copper sulfide ores at home and abroad.

Currently, research is underway on devices and methods for strengthening leaching of copper sulfide based on seawater-based solutions, and the research is mostly focused on the following two categories: firstly, the leaching reaction kinetics research based on a small controllable stirring reactor is realized, the device utilizes a stirrer, a reactor and a sensor to construct a small reaction monitoring device, the temperature, the pH and the ORP in the leaching process of the seawater-based solution are displayed in real time, but the investigation object is usually a single mineral (such as chalcocite, chalcopyrite and the like), the ore size is limited below-200 meshes (the particle diameter is less than 0.075mm) or even lower, the device is usually only suitable for the leaching kinetics research and cannot be suitable for the block ore leaching reaction research; secondly, based on the seawater-based solution enhanced leaching research of the expanded column leaching device, the column leaching device has various devices, but is difficult to comprehensively detect the environmental temperature, the pH value of the solution, the oxidation-reduction potential and the ion concentration, is difficult to control, adjust and control in advance and monitor the components of the leaching solution, and is further incapable of preparing the seawater-based solution and investigating the influence mechanism of the seawater-based solution. In conclusion, the existing device has the problems of small ore size adaptability, poor monitoring capability, low visualization degree, difficulty in effectively preparing seawater-based solution and the like, and the device and the method for leaching copper sulfide ore by using seawater-based solution reinforcement are still lacked, so that the regulation and mechanism research of the leaching process of the seawater-based solution is difficult to meet.

Disclosure of Invention

The invention aims to solve the technical problem of providing an experimental device and method for strengthening copper sulfide ore leaching by using a seawater-based solution, and exploring an effective method for strengthening leaching of copper sulfide ore by using the seawater-based solution based on in-situ real-time monitoring of key parameters such as oxidation-reduction potential, pH value, ion concentration, temperature and the like, preparing the seawater-based solution and adjusting the internal ion components thereof in an intervention manner to obtain an ideal leaching solution, so that the industrial copper sulfide ore leaching can be finally referred.

The device bagIncluding sea water base solution preparation system, spray circulation system, water bath temperature control system and data acquisition visual system, wherein, sea water base solution preparation system includes the liquid storage pot, go out the liquid valve, the backward flow liquid valve, agitator motor, stirring vane, ionic solution jar, the sea water storage tank, fluidflowmeter and the valve that converges, spray circulation system includes the water conservancy diversion straight tube, the fixed plate, fixing bolt, reaction column roof, the reaction column, porous baffle, the flowing back valve, the collection fluid reservoir and peristaltic pump, water bath temperature control system includes water bath temperature control layer, the water inlet, water bath temperature control appearance and delivery port, data acquisition visual system includes the pH sensor, the redox potential sensor, Cu²⁺Ion sensor and Fe³⁺An ion sensor and a data integration computer; the bottom of the liquid storage tank is provided with a liquid outlet valve, the upper part of the liquid storage tank is provided with a reflux valve and a confluence valve, the bottoms of the ionic solution tank and the seawater storage tank are uniformly provided with a liquid flow meter, a stirring motor is fixed above the liquid storage tank, the lower part of the stirring motor is connected with a stirring blade and extends into the liquid storage tank, a fixing bolt is matched with a reaction column top plate to fixedly connect a fixing plate with the reaction column, a flow guide straight pipe is fixed by the fixing plate, the lower end of the flow guide straight pipe is right opposite to the reaction column, the inner side of the reaction column is provided with a porous partition plate, the bottom of the reaction column is provided with a liquid discharge valve, the lower end of the liquid discharge valve is right opposite to a liquid collection tank, the liquid collection tank is connected with the liquid storage tank through a peristaltic pump, the liquid storage tank, Cu²⁺Ion sensor and Fe³⁺The probe of the ion sensor is fixed at the bottom of the inner side of the liquid storage tank and the bottom of the inner side of the liquid collection tank, and collected electric signals are collected to the data integration computer.

The ionic solution tanks are of parallel structures, the number of the ionic solution tanks is not less than 3, and the ionic solution tanks and the acid liquor with certain concentration are filled in the ionic solution tanks; the seawater storage tank is filled with untreated seawater.

And the solution in the ionic solution tank and the seawater storage tank enters the liquid storage tank through the liquid flowmeter and the confluence valve, and the stirring motor drives the stirring blades to rotate to homogenize and stir the solution to obtain the sea-based aqueous solution.

pH sensor, oxidation-reduction potential sensor, and Cu²⁺Ion sensor and Fe³⁺The ion sensor needs to be immersed below the interface of the solution in the liquid collection tank and the liquid storage tank.

The reaction column is matched with a water bath temperature controller and a water bath temperature control layer to regulate and control the internal temperature of the reaction column.

The liquid flow meter controls the addition amount of different ionic solutions; and the data integration computer displays the ion composition of the seawater-based solution in the liquid collection tank and the leaching environment.

The method applying the invention comprises the following steps:

s1: before the copper sulfide ore leaching experiment begins, emptying and drying liquid in a liquid storage tank, a liquid collecting tank, an ionic solution tank, a seawater storage tank and a reaction column; carrying out ore stacking in the reaction column and sealing the reaction column;

s2: starting a water bath temperature control instrument and a peristaltic pump, preheating the liquid storage tank, the liquid collecting tank and the reaction column by using the water bath temperature control layer, and adjusting the temperature to a target temperature;

s3: according to the research requirement, FeCl is added₃Solution, CuCl₂Solution, H₂SO₄Respectively placing the solution plasma solutions in an ionic solution tank, and placing the seawater in a seawater storage tank;

s4: injecting a certain amount of seawater into the liquid storage tank from the seawater storage tank by using a liquid flowmeter, and starting a stirring motor to drive a stirring blade to rotate; when the liquid storage tank reaches the target temperature and keeps constant, a pH sensor, an oxidation-reduction potential sensor and Cu are utilized²⁺Ion sensor and Fe³⁺The ion sensor respectively measures the pH value, the oxidation-reduction potential and the Cu of the solution²⁺Concentration, Fe³⁺Concentration;

s5: injecting one or more ionic solutions in the ion liquid storage tank into the liquid storage tank through a liquid flowmeter, and carrying out quantitative characterization on the solution environment through a data integration computer; performing data feedback, adjusting the liquid flowmeter again to obtain an ideal seawater-based solution, and then closing the liquid flowmeter to avoid generating unexpected disturbance on the chemical composition of the subsequent seawater-based solution;

s6: pumping the sea-based aqueous solution in the liquid storage tank to a diversion straight pipe by using a peristaltic pump, uniformly spraying the sea-based aqueous solution to the upper surface of an ore pile in the reaction column, allowing the leaching pregnant solution to flow out to a liquid collection tank through a porous partition plate and a liquid discharge valve, and using a pH sensor, an oxidation-reduction potential sensor and a Cu sensor²⁺Ion sensor and Fe³⁺The ion sensor and the data integration computer realize the recording and displaying of experimental data;

s7: the seawater-based solution in the liquid collection tank is sent to the liquid storage tank through a peristaltic pump to participate in the copper sulfide ore leaching reaction again, and a closed circulation of the seawater-based solution is formed.

The technical scheme of the invention has the following beneficial effects:

in the scheme, the regulation and control of the ore leaching process by regulating and controlling the ionic components of the seawater-based solution can be realized, the accurate monitoring of key factors such as oxidation-reduction potential, pH value, ion concentration, temperature and the like can be realized, and the deep revealing of Cu in the seawater-based solution can be realized²⁺、Fe³⁺The association mechanism of the key ions and the leaching reaction provides an effective research device and method. The experimental device and the method for strengthening copper sulfide ore leaching by using the seawater-based solution have the outstanding advantages of high visualization degree, strong operability, low equipment cost and the like, and provide a good reference for strengthening leaching of industrial copper sulfide ore.

Drawings

FIG. 1 is a schematic structural diagram of an experimental apparatus according to the present invention;

FIG. 2 is a schematic three-dimensional structure diagram of a seawater-based solution preparation system in the experimental apparatus of the present invention.

Wherein: 1-liquid storage tank, 2-liquid outlet valve, 3-reflux valve, 4-stirring motor, 5-stirring blade, 6-ionic solution tank, 7-seawater storage tank, 8-liquid flowmeter, 9-confluence valve, 10-pH sensor, 11-oxidation-reduction potential sensor, 12-Cu²⁺Ion sensor, 13-Fe³⁺The system comprises an ion sensor, 14-a water bath temperature control layer, 15-a diversion straight pipe, 16-a fixing plate, 17-a fixing bolt, 18-a reaction column top plate, 19-a data integration computer, 20-a reaction column, 21-a porous partition plate, 22-a liquid discharge valve, 23-a liquid collection tank, 24-a peristaltic pump, 25-a water inlet, 26-a water bath temperature control instrument and 27-a water outlet.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The invention provides an experimental device and method for strengthening copper sulfide ore leaching by using a seawater-based solution.

As shown in fig. 1, the device comprises a seawater-based solution preparation system, a spraying circulation system, a water bath temperature control system and a data acquisition visualization system, wherein the seawater-based solution preparation system comprises a liquid storage tank 1, a liquid outlet valve 2, a reflux valve 3, a stirring motor 4, a stirring blade 5, an ionic solution tank 6, a seawater storage tank 7, a liquid flow meter 8 and a confluence valve 9, the spraying circulation system comprises a diversion straight pipe 15, a fixing plate 16, a fixing bolt 17, a reaction column top plate 18, a reaction column 20, a porous partition plate 21, a liquid discharge valve 22, a liquid collection tank 23 and a peristaltic pump 24, the water bath temperature control system comprises a water bath temperature control layer 14, a water inlet 25, a water bath temperature controller 26 and a water outlet 27, the data acquisition visualization system comprises a pH sensor 10, an oxidation-reduction potential sensor 11²⁺ Ion sensor 12, Fe³⁺The ion sensor 13 and the data integration computer 19; a liquid outlet valve 2 is arranged at the bottom of a liquid storage tank 1, a reflux valve 3 and a confluence valve 9 are arranged at the upper part of the liquid storage tank 1, liquid flow meters 8 are uniformly arranged at the bottoms of an ionic solution tank 6 and a seawater storage tank 7, a fixing bolt 17 is matched with a reaction column top plate 18 to connect and fix a fixing plate 16 and a reaction column 20, a flow guide straight pipe 15 is fixed by the fixing plate 16, the lower end of the flow guide straight pipe 15 is opposite to the reaction column 20, a porous partition plate 21 is arranged at the inner side of the reaction column 20, a liquid discharge valve 22 is arranged at the bottom of the reaction column 20, the lower end of the liquid discharge valve 22 is opposite to a liquid collection tank 23, the liquid collection tank 23 is connected with the liquid storage tank 1 through a peristaltic pump 24, a stirring motor 4 is fixed above the liquid storage tank 1, the lower part is connected with a stirring blade 5 and extends into the, the temperature of the water bath solution is adjusted by a water bath temperature controller 26, the solution is circularly pumped by a peristaltic pump 27, a pH sensor 10, an oxidation-reduction potential sensor 11 and Cu are arranged²⁺ Ion sensor 12 and Fe³⁺Ion sensingThe probe of the device 13 is fixed at the bottom of the inner side of the liquid storage tank 1 and the liquid collection tank 23, and collected electric signals are all collected to the data integration computer 19.

As shown in FIG. 2, the three-dimensional structure of the seawater-based solution preparation system in the experimental facility for leaching copper sulfide ore by using seawater-based solution is schematically shown. A water bath temperature control layer 14, a water inlet 25 and a water outlet 27 are arranged on the outer side of the liquid storage tank 1 to control the temperature of the seawater-based solution; the flow of the liquid flow meter 8 below the ionic solution tank 6 and the seawater storage tank 7 can be adjusted; the ionic solution in the ionic solution tank 6 and the seawater in the seawater storage tank 7 enter the liquid storage tank 1 through the confluence valve 9; the stirring blades 5 are positioned below the liquid level of the solution in the liquid storage tank 1, are driven by the stirring motor 4 to stir to obtain a seawater-based solution, and enter the spraying circulation system through the liquid outlet valve 2, and the solution after leaching reaction is pumped to the reflux valve 3 through the peristaltic pump 24 and then flows back to the liquid storage tank again.

The practical application process of the device is as follows:

s1: cleaning, emptying and installing the device. Before the copper sulfide ore leaching experiment begins, emptying and drying the liquid in the liquid storage tank 1, the liquid collection tank 23, the ionic solution tank 6, the seawater storage tank 7 and the reaction column 20; an ionic solution tank 6, a seawater storage tank 7, a liquid storage tank 1, a reaction column 20 and a liquid collecting tank 23 are arranged from top to bottom, ores are poured into the reaction column 20 for piling, and then the reaction column 20 is sealed to prepare for preheating;

s2: the device warms up and reaches the target temperature. The peristaltic pump 24 is started to pump water to the liquid storage tank 1, the liquid collection tank 23 and the water bath temperature control layer 14 of the reaction column 20, so that water bath circulation is realized, then the water bath temperature control instrument 26 is started to preheat the liquid storage tank 1, the reaction column 20 and the liquid collection tank 23, and the temperature is adjusted until the target temperature is reached;

s3: seawater-based solution composition determination. According to research requirements, FeCl with a certain mass fraction₃Solution, CuCl₂Solution, H₂SO₄The solution plasma solutions are respectively added to the ionic solution tanks 6, and further, seawater is added to the seawater storage tank 7;

s4: seawater-based solution preparation. A certain amount of seawater in the seawater storage tank 7 is injected into the liquid storage tank 1 as a substrate by using the liquid flowmeter 8, and one or more ionic solutions in the ionic liquid storage tank 6 are injected into the liquid storage tank 1 as additives; starting the stirring motor 4 to drive the stirring blades 5 to rotate, so that the concentration distribution of the solution ions is homogenized, and when the liquid storage tank 1 reaches the target temperature and keeps constant;

s5: ideal seawater-based solution acquisition. Using a pH sensor 10, an oxidation-reduction potential sensor 11, Cu²⁺Ion sensor 12 and Fe³⁺The ion sensor 13 measures the pH value, oxidation-reduction potential and Cu of the solution respectively²⁺Concentration, Fe³⁺Concentration; the solution environment is quantitatively characterized through a data integration computer 19, the liquid flowmeter 8 is adjusted based on data feedback, the ion composition of the seawater-based solution is changed, an ideal seawater-based solution is finally obtained, and then the liquid flowmeter 8 is closed;

s6: and (3) spraying the seawater-based solution. The ideal sea-based aqueous solution in the liquid storage tank 1 is pumped to the diversion straight pipe 15 by the peristaltic pump 24 and is uniformly sprayed to the upper surface of an ore pile in the reaction column 20, the sea-based aqueous solution reacts with the ore to obtain ore leaching rich liquid, the ore leaching rich liquid is transferred downwards to the bottom of the reaction column 20 under the action of gravity and capillary force, and the ore leaching rich liquid flows out to the liquid collection tank 23 through the porous partition plate 21 and the liquid discharge valve 22;

s7: and (5) analyzing parameters of the leaching process. Using a pH sensor 10, an oxidation-reduction potential sensor 11, Cu²⁺Ion sensor 12, Fe³⁺The ion sensor 13 and the data integration computer 19 analyze the components of the solution in the liquid collection tank 23, record and display experimental data in real time, and realize effective regulation and analysis of the leaching process and efficiency;

s8: the seawater-based solution in the liquid collection tank 23 is pumped to the liquid storage tank 1 through the peristaltic pump 24 and participates in the leaching reaction of the copper sulfide ore in the reaction column 20 again to form closed circulation of the seawater-based solution until the indexes such as the target copper leaching rate are reached;

s9: after the leaching experiment is finished, the peristaltic pump 24 is closed, the fixing bolt 17 is adjusted, the diversion straight pipe 15 and the fixing plate 16 are taken down, and the leaching solution and impurities in the reaction column 20, the liquid storage tank 1 and the liquid collection tank 23 are emptied for subsequent reuse.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.