阅读说明：本技术 一种新型转鼓混酸料浆造粒法 (Novel rotary drum mixed acid slurry granulation method ) 是由 李英 于 2020-08-07 设计创作，主要内容包括：本发明公开了一种新型转鼓混酸料浆造粒法,其技术方案是：拌轴和叶轮转动；S2,加料：在搅拌轴和叶轮转动时,向缓冲罐内部添加物料；S3,加温：通过缓冲罐体顶部的加温口外接蒸汽管,一种新型转鼓混酸料浆造粒法有益效果是：通过在原有普通转鼓造粒基础上,添加了铵溶解罐一台,混酸罐一台和缓冲罐一台,部分原料及硫酸经过三台罐体,溶解混合后,通过电磁流量计进入造粒料床,与计量秤中粉体在造粒机内充分利用热能与缓冲能进行成球,尾洗水中有氮磷钾回收后溶解用二次利用,节约了大量资源,同时保证造粒的质量,避免以往生产时,物料发生二次反应,导致粉化结块现象的发生。(The invention discloses a novel rotary drum mixed acid slurry granulation method, which adopts the technical scheme that: the stirring shaft and the impeller rotate; s2, adding: when the stirring shaft and the impeller rotate, materials are added into the buffer tank; s3, heating: the heating port at the top of the buffer tank body is externally connected with a steam pipe, and the novel rotary drum mixed acid slurry granulation method has the beneficial effects that: through on original ordinary rotary drum granulation basis, one ammonium dissolving tank has been added, one mixed acid tank and buffer tank, partial raw materials and sulphuric acid are through three jar bodies, dissolve the back of mixing, get into the granulation bed of material through the electromagnetic flowmeter, can carry out the balling with the powder make full use of heat energy and buffering in the granulator in the weigher, there is the reutilization of dissolving after the NPK retrieves in the tail wash water, a large amount of resources have been practiced thrift, guarantee the quality of granulation simultaneously, when avoiding production in the past, the material takes place the secondary reaction, lead to the emergence of pulverization caking phenomenon.)

1. A novel rotary drum mixed acid slurry granulation method is characterized in that: the method comprises the following steps:

s1, stirring: after the power supply is switched on, the motor (2) is started to drive the stirring shaft (3) and the impeller (4) to rotate;

s2, adding: when the stirring shaft (3) and the impeller (4) rotate, materials are added into the buffer tank (1);

s3, heating: a heating port at the top of the buffer tank (1) is externally connected with a steam pipe, so that steam is introduced into the buffer tank (1) for heating, and the heating temperature is 75-90 ℃;

s4, adding water: the submersible pump in the water storage tank is started through the switch, water is added into the buffer tank (1), and the switch is closed after the water level is proper, so that the submersible pump stops working;

s5, starting a pump: turning on a pump before starting the pump, normally opening the pump after normal operation, and then starting a root valve, a pump outlet valve and a pump power supply;

s6, stopping the pump: when the pump is stopped, the pump is stopped when the liquid level is lower, and no slurry idleness is strictly forbidden;

s7, purging: closing the uppermost valve of the pump, opening a steam blowing valve to hear the steam blown out from the tank, opening the uppermost valve, then closing a root valve to hear the steam blown out from the tail end of the pipeline, and then closing the steam valve, wherein the blowing is finished;

s8, cooling: the cooling water is kept to flow in a circulating mode all the time, and therefore the cooling work is guaranteed to be normally carried out.

2. A novel rotary drum mixed acid slurry granulation method as claimed in claim 1, wherein: in the S1, before the motor (2) is started, the motor (2) needs to be turned, and the motor is started after the motor (2) is determined to be normal.

3. A novel rotary drum mixed acid slurry granulation method as claimed in claim 1, wherein: the water level is not less than 1/3 when the material is added in the S2.

4. A novel rotary drum mixed acid slurry granulation method as claimed in claim 1, wherein: and in the S3, the number of the heating valves is set to be two, the top heating valve is set to be in a control state, and the bottom heating valve is set to be in a normally open state.

5. A novel rotary drum mixed acid slurry granulation method as claimed in claim 1, wherein: in the step S7, the steam blowing time in the tank is 5-10 seconds.

6. A novel rotary drum mixed acid slurry granulation method as claimed in claim 1, wherein: and in the S7, the steam blowing time at the tail end of the pipeline is 5-10 seconds.

7. A novel rotary drum mixed acid slurry granulation method as claimed in claim 1, wherein: buffer tank (1) top fixedly connected with motor (2) in S2, motor (2) outside cover is equipped with ammonium dissolving tank (5), ammonium dissolving tank (5) fixed connection is at buffer tank (1) top, ammonium dissolving tank (5) top fixedly connected with mixes acid jar (6), motor (2) output shaft extends to inside buffer tank (1), motor (2) output shaft passes through bearing swing joint with buffer tank (1) junction, motor (2) output shaft fixedly connected with (mixing) shaft (3), mixing shaft (3) bottom fixedly connected with impeller (4).

8. The novel rotary drum mixed acid slurry granulation method as set forth in claim 7, characterized in that: the top of the buffer tank (1) is fixedly connected with two inlets which are respectively positioned at two sides of the motor (2).

9. The novel rotary drum mixed acid slurry granulation method as set forth in claim 7, characterized in that: and a thermocouple (7) is fixedly installed on one side of the buffer tank (1).

Technical Field

The invention relates to the technical field of granulation, in particular to a novel rotary drum mixed acid slurry granulation method.

Background

The fertilizer is a substance which can provide nutrients required by the growth and development of crops, improve the soil properties and improve the yield and quality of the crops. Is an important production data in agricultural production. Generally, the fertilizer is divided into organic fertilizer, inorganic fertilizer and biological fertilizer. And may be divided into farmyard manure and chemical manure according to the source. Dividing the fertilizer into complete fertilizer and incomplete fertilizer according to the amount of the contained nutrients; according to the characteristics of fertilizer supply, the fertilizer is divided into direct fertilizer and indirect fertilizer; according to the components, the fertilizer is divided into nitrogen fertilizer, potassium fertilizer, trace element fertilizer and rare earth element fertilizer, at present, in actual production, after the fertilizer is produced by a manufacturer, the fertilizer is usually produced into granules for storage and sale, the granular fertilizer is convenient to store, pack and transport, and meanwhile, when the fertilizer is used by a farmer, the fertilizer is better applied;

at present, when a manufacturer produces the fertilizer, the various materials are often mixed insufficiently and sufficiently, and the materials undergo secondary reaction, so that the phenomenon of pulverization and caking is caused, the production efficiency of the fertilizer is slowed down, the production quality of the fertilizer is reduced, and the economic benefit and the product public praise of the manufacturer are seriously damaged.

Therefore, it is necessary to develop a new granulation method of the tumbler mixed acid slurry.

Disclosure of Invention

Therefore, the invention provides a novel rotary drum mixed acid slurry granulation method, which is characterized in that one ammonium dissolving tank, one acid mixing tank and one buffer tank are added on the basis of the original common rotary drum granulation, part of raw materials and sulfuric acid pass through three tanks, after dissolving and mixing, the raw materials and the sulfuric acid enter a granulation material bed through an electromagnetic flow meter, the raw materials and powder in a metering scale are fully utilized by heat energy and buffer energy in a granulator to form balls, nitrogen, phosphorus and potassium in tail washing water are recycled and then are dissolved for secondary utilization, a large amount of resources are saved, the granulation quality is ensured, the phenomenon of pulverization and agglomeration caused by secondary reaction of the materials in the past production is avoided, the production cost is reduced, the production efficiency is improved, and the problems that the phenomenon of pulverization and agglomeration caused by insufficient mixing reaction of the materials in the prior art and the secondary reaction can occur in the later production are solved.

In order to achieve the above purpose, the invention provides the following technical scheme: a novel rotary drum mixed acid slurry granulation method comprises the following steps:

s1, stirring: after the power supply is switched on, the motor is started to drive the stirring shaft and the impeller to rotate;

s2, adding: when the stirring shaft and the impeller rotate, materials are added into the buffer tank;

s3, heating: a heating port at the top of the buffer tank body is externally connected with a steam pipe, so that steam is introduced into the buffer tank for heating, and the heating temperature is 75-90 ℃;

s4, adding water: starting the submersible pump in the water storage tank through the switch, adding water into the buffer tank, and closing the switch after the water level is proper so that the submersible pump stops working;

s5, starting a pump: turning on a pump before starting the pump, normally opening the pump after normal operation, and then starting a root valve, a pump outlet valve and a pump power supply;

s6, stopping the pump: when the pump is stopped, the pump is stopped when the liquid level is lower, and no slurry idleness is strictly forbidden;

s7, purging: closing the uppermost valve of the pump, opening a steam blowing valve to hear the steam blown out from the tank, opening the uppermost valve, then closing a root valve to hear the steam blown out from the tail end of the pipeline, and then closing the steam valve, wherein the blowing is finished;

s8, cooling: the cooling water is kept to flow in a circulating mode all the time, and therefore the cooling work is guaranteed to be normally carried out.

Preferably, before the motor is started in S1, the motor needs to be turned, and the motor is turned on after the motor is determined to be normal.

Preferably, the water level is ≧ 1/3 when the material is added in S2.

Preferably, in S3, the number of the warming valves is two, the top warming valve is set to be in a control state, and the bottom warming valve is set to be in a normally open state.

Preferably, the steam blowing time in the tank is heard to be 5 to 10 seconds in the S7.

Preferably, in the step S7, the steam blowing time at the end of the pipeline is 5 to 10 seconds.

Preferably, buffer tank top fixedly connected with motor in S2, the motor outside cover is equipped with the ammonium dissolving tank, ammonium dissolving tank fixed connection is at the buffer tank top, the mixed acid jar of ammonium dissolving tank top fixedly connected with, motor output shaft extends to inside the buffer tank, motor output shaft and buffer tank junction pass through bearing swing joint, motor output shaft fixedly connected with (mixing) shaft, (mixing) shaft bottom fixedly connected with impeller.

Preferably, the top of the buffer tank is fixedly connected with two inlets, and the two inlets are respectively positioned at two sides of the motor.

Preferably, a thermocouple is fixedly installed on one side of the buffer tank.

The invention has the beneficial effects that:

according to the invention, on the basis of the original common drum granulation, one ammonium dissolving tank, one mixed acid tank and one buffer tank are added, part of raw materials and sulfuric acid pass through the three tanks, are dissolved and mixed, then enter a granulating material bed through an electromagnetic flow meter, and are pelletized together with powder in a metering scale in a granulator by fully utilizing heat energy and buffer energy.

Drawings

FIG. 1 is a schematic view of the overall structure provided by the present invention;

in the figure: 1 buffer tank, 2 motors, 3 stirring shafts, 4 impellers, 5 ammonium dissolving tanks, 6 acid mixing tanks and 7 thermocouples.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.