Manganese sulfate purification and impurity removal system

Abstract

The utility model discloses a manganese sulfate purification and impurity removal system which comprises an acidification tank, an acidification storage tank, a large vulcanizing tower, a small vulcanizing tower, a large vulcanizing tank and a small vulcanizing tank, the tops of the small vulcanizing tanks and the large vulcanizing tanks are provided with vulcanizing feed ports, the bottoms of the small vulcanizing tanks and the large vulcanizing tanks are connected with return pipes and discharge pipes through vulcanizing discharge ports, and the return pipes are respectively connected with material inlets in the tops of the corresponding small vulcanizing towers and the large vulcanizing towers; two acidification feed ports and an acidification exhaust port are formed in the top of the acidification tank, an acidification discharge port is formed in the bottom of the acidification tank, and the acidification exhaust port is connected with a gas inlet in the lower part of the large vulcanizing tower through a pipeline; the acidification discharge port is communicated with a feed port in the top of the acidification storage tank through a pipeline; and a storage tank exhaust port connected with the small vulcanizing tower is also formed in the top of the acidification storage tank. According to the manganese sulfate purification and impurity removal device, purification and impurity removal of manganese sulfate are carried out through combination of the vulcanization device and the acidification device, purification and impurity removal of manganese sulfate are achieved, cyclic utilization of resources is achieved, and the purposes of reducing cost and improving efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of manganese sulfate purification, and particularly relates to a manganese sulfate purification and impurity removal system. BACKGROUND

[0002] Efficient utilization of low-grade manganese carbonate ore is a key to meet the needs of the domestic new energy battery industry for raw materials, and a method for realizing efficient utilization of manganese carbonate ore is to prepare coarse manganese sulfate from low-grade manganese carbonate ore and then purify and remove impurities from the coarse manganese sulfate to obtain high-purity manganese sulfate.

[0003] Most of the existing coarse manganese sulfate purification and impurity removal devices on the market can only achieve simple purification and impurity removal of coarse manganese sulfate, cannot meet the needs of deep purification and impurity removal of coarse manganese sulfate, and cannot realize recycling of resources in the process of purification and impurity removal, resulting in waste of resources. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of the prior art, and provides a manganese sulfate purification and impurity removal system which can purify and remove impurities from coarse manganese sulfate prepared from manganese carbonate ore to obtain high-purity manganese sulfate and also realizes recycling of resources in the process of impurity removal.

[0005] The utility model adopts the technical scheme of a manganese sulfate purification and impurity removal system which comprises an acidification tank, an acidification storage tank, a large sulfurization tower, a small sulfurization tower, a large sulfurization tank and a small sulfurization tank.

[0006] The small sulfurization tank and the large sulfurization tank are each provided with two sulfurization feed ports at the top and a sulfurization discharge port at the bottom, the sulfurization discharge port is connected with a reflux pipe and a discharge pipe through a conveying pump, valves are respectively installed on the reflux pipe and the discharge pipe, the reflux pipe of the small sulfurization tank is connected with a material inlet at the top of the small sulfurization tower, a material outlet at the bottom of the small sulfurization tower is connected with a mixed feed inlet at the lower part of the small sulfurization tank, and the reflux pipe of the large sulfurization tank is connected with a material inlet at the top of the large sulfurization tower, a material outlet at the bottom of the large sulfurization tower is connected with a mixed feed inlet at the lower part of the large sulfurization tank.

[0007] The acidification tank is provided with two acidification feed ports and an acidification exhaust port at the top and an acidification discharge port at the bottom, and the acidification exhaust port is connected with a lower gas inlet of the large sulfurization tower through a pipeline.

[0008] The acidification discharge port is communicated with a top feed inlet of the acidification storage tank through a pipeline, a storage tank discharge port is arranged at one side and the bottom of the acidification storage tank, a storage tank exhaust port is further arranged at the top of the acidification storage tank, and the storage tank exhaust port is communicated with a lower gas inlet of the small sulfurization tower through a pipeline.

[0009] As a preferred arrangement, the pipelines connected with the lower gas inlets of the small sulfurization tower and the large sulfurization tower are each in a reverse U-shaped structure.

[0010] As preferred, the acidification tank, acidification storage tank, small sulfidation tank and large sulfidation tank are all equipped with a stirrer with a liquid sealing mechanism.

[0011] As preferred, the acidification tank, acidification storage tank, small sulfidation tank and large sulfidation tank are all equipped with a radar liquid level meter.

[0012] As preferred, the large sulfidation tower is also equipped with a pressure sensor.

[0013] The beneficial effects of the present application are as follows:

[0014] (1) The crude manganese sulfate reacts in the large sulfidation tank and small sulfidation tank to generate manganese sulfide, while the acidification tank also simultaneously performs acidification reaction of manganese sulfide and dilute sulfuric acid, greatly reducing the impurity removal process time and improving the impurity removal purification efficiency;

[0015] (2) The large sulfidation tank and small sulfidation tank utilize the hydrogen sulfide generated by acidification to perform sulfidation reaction with the crude manganese sulfate to obtain manganese sulfide, which is then sent into the acidification tank to react with dilute sulfuric acid to obtain high-purity manganese sulfate, realizing resource recycling in the entire reaction process and greatly reducing production cost;

[0016] (3) The hydrogen sulfide gas generated by the acidification tank is immediately brought into the large sulfidation tank by the large sulfidation tower for utilization reaction, reducing the risk of hydrogen sulfide storage;

[0017] (4) After the acidification tank reaction is completed, the generated high-purity manganese sulfate is sent into the acidification storage tank for storage, which on one hand can realize re-feeding reaction in the acidification tank, reducing the reaction time of the entire manganese sulfate impurity removal system and improving efficiency, and on the other hand can bring a small amount of hydrogen sulfide into the acidification storage tank during the process of sending high-purity manganese sulfate into the acidification storage tank, which is then utilized by the small sulfidation tower and small sulfidation tank, avoiding the risk of excess hydrogen sulfide;

[0018] (4) The pipeline connected with the gas inlet of the large sulfidation tower and small sulfidation tower is in inverted U-shaped structure, which can effectively prevent the sprayed manganese sulfate from flowing back into the acidification tank and acidification storage tank through the pipeline;

[0019] (5) The large sulfidation tower is equipped with a pressure sensor, which controls the feeding amount of dilute sulfuric acid in the acidification tank according to the pressure sensor value, thereby controlling the hydrogen sulfide in the pipeline and realizing timely absorption reaction of hydrogen sulfide;

[0020] (6) The acidification tank, acidification storage tank, small sulfidation tank and large sulfidation tank are respectively equipped with a stirrer with a liquid sealing device, which can effectively prevent hydrogen sulfide leakage caused by equipment vibration.

[0021] The utility model discloses a sulphuric acid purification system, which comprises a sulphuric acid tank, a sulphuric acid storage tank, a large sulphurization tower, a small sulphurization tower, a large sulphurization tank and a small sulphurization tank. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The utility model discloses a system flow chart.

[0023] In the figure: 1, acidification tank, 2, acidification storage tank, 3, large sulphurization tower, 4, small sulphurization tower, 5, large sulphurization tank, 6, small sulphurization tank, 7, sulphurization feed inlet, 8, delivery pump, 9, backflow pipe, 10, discharge pipe, 11, manganese sulphide feed inlet, 12, dilute sulphuric acid feed inlet, 13, acidification exhaust port, 14, storage tank discharge port, 15, storage tank exhaust port, 16, pressure sensor. DETAILED DESCRIPTION

[0024] The utility model will be further explained in detail in connection with the drawings and specific embodiment.

[0025] EMBODIMENT

[0026] As Figure 1 The utility model discloses a sulphuric acid purification system, which comprises a sulphuric acid tank, a sulphuric acid storage tank, a large sulphurization tower, a small sulphurization tower, a large sulphurization tank and a small sulphurization tank.

[0027] The acidification tank 1 top is equipped with two acidification feed inlets and an acidification exhaust port 13, and the bottom is equipped with an acidification discharge port, the acidification tank 1 top is installed with the agitator with liquid seal mechanism, and the acidification tank 1 is vertically installed with radar liquid level meter, two acidification feed inlets are sulphurization manganese feed inlet 11 and dilute sulphuric acid feed inlet 12 respectively, first add the sulphurization manganese of fixed amount to the acidification tank 1, then according to the need of mixed reaction, constantly add dilute sulphuric acid and mix, and the reaction principle is as follows:

[0028] MnS+H2SO4=MnSO4+H2S

[0029] Get high-purity manganese sulfate and hydrogen sulfide gas, and after the reaction is completed, the high-purity manganese sulfate is discharged through the acidification discharge port;

[0030] The hydrogen sulfide gas generated in the reaction is discharged through the acidification exhaust port 13 at the top of the acidification tank 1, is sent to the large sulphurization tower 3 through the pipeline, and the pipeline connected with the large sulphurization tower 3 and the large sulphurization tower 3 is in inverted U-shaped structure, the large sulphurization tower 3 top is installed with pressure sensor 16, the amount of hydrogen sulfide gas in the large sulphurization tower 3 is detected, the amount of dilute sulphuric acid of the dilute sulphuric acid feed inlet 12 of the acidification tank 1 is controlled, and the acidification reaction in the acidification tank 1 is controlled, that is, the control of hydrogen sulfide gas generation is realized;

[0031] The material inlet at the top of the large sulfurization tower 3 is connected with the sulfurization material outlet at the bottom of the large sulfurization tank 5 through the reflux pipe 9, and a delivery pump 8 is installed at the sulfurization material outlet. The material outlet at the bottom of the large sulfurization tower 3 is connected with the mixing material inlet at the lower part of the large sulfurization tank 5 through a pipe. Two sulfurization material inlets 7 are arranged at the top of the large sulfurization tank 5, and a stirrer with a liquid sealing mechanism is installed at the top of the large sulfurization tank 5. A radar liquid level meter is arranged in the large sulfurization tank 5. The two sulfurization material inlets 7 are respectively a crude manganese sulfate material inlet and an ammonia water material inlet. The crude manganese sulfate is first added into the large sulfurization tank 5. After the pressure sensor 16 detects that hydrogen sulfide gas enters the large sulfurization tower 3, the valve on the discharge pipe 10 is closed. The crude manganese sulfate is pumped to the material outlet at the top of the large sulfurization tower 3 through the delivery pump 8 for spraying. The mixture material for spraying and adsorbing hydrogen sulfide gas is sent back to the large sulfurization tank 5 through the material outlet at the bottom. The ammonia water is continuously added into the large sulfurization tank 5 during the process, so that the sulfurization reaction occurs in the large sulfurization tank 5. The reaction principle is as follows:

[0032] MnSO4+H2S+2NH3·H2O=MnS+(NH4)2SO4+2H2O

[0033] After the hydrogen sulfide reaction is completed, the generated manganese sulfide, ammonium sulfate and water are discharged through the discharge pipe 10. At this time, the valve on the reflux pipe 9 is closed. The mixture material of the manganese sulfide, ammonium sulfate and water discharged from the discharge pipe 10 is subjected to pressure filtration. The solid material is manganese sulfide. The manganese sulfide is added into the acidification tank 1 for acidification reaction, so that the resource recycling is completed. At the same time of the acidification reaction in the acidification tank 1, the sulfurization reaction is also carried out in the large sulfurization tank 5. The devices in the whole system are in working state. The reaction time is reduced, and the impurity removal efficiency is improved. It should be noted that the ammonium sulfate generated in the sulfurization reaction is subjected to ammonia evaporation in a deamination device to prepare ammonia water for recycling. The specific reaction is as follows:

[0034] (NH4)2SO4+H2O+CaO=2NH3·H2O+CaSO4;

[0035] The hydrogen sulfide gas generated by the acidification reaction of the acidification tank 1 is treated by the sulfurization reaction of the large sulfurization tower 3 and the large sulfurization tank 5. The safety of production is ensured, and the resource recycling is also carried out. The manganese sulfide generated after the sulfurization reaction of the crude manganese sulfate is sent to the acidification tank 1 for acidification reaction, so that the resource recycling is realized.

[0036] After the reaction of the acidification tank 1 is completed, the generated high-purity manganese sulfate is pumped into the acidification storage tank 2 for storage, so that the acidification tank 1 can be used for feeding reaction again. The acidification storage tank 2 is further provided with a storage tank discharge port 14 at the lower part, which is used for releasing the stored high-purity manganese sulfate.

[0037] In the process of conveying high-purity manganese sulfate, a small amount of hydrogen sulfide gas in the acidification tank 1 is brought into the acidification storage tank 2, in order to prevent the accumulation of hydrogen sulfide gas, and because the amount of hydrogen sulfide gas brought in during the transfer process is small, a small sulfidation tower 4 and a small sulfidation tank 6 are used for treatment;

[0038] The hydrogen sulfide gas in the acidification storage tank 2 is sent to the lower part of the small sulfidation tower 4 through a pipeline, the material inlet at the top of the small sulfidation tower 4 is connected with the sulfidation discharge port at the bottom of the small sulfidation tank 6 through a reflux pipe 9, and a delivery pump 8 is installed at the sulfidation discharge port, the material outlet at the bottom of the small sulfidation tower 4 is connected with the mixing inlet at the lower part of the small sulfidation tank 6 through a pipeline, two sulfidation inlets 7 are arranged at the top of the small sulfidation tank 6, a stirrer with a liquid sealing mechanism is installed at the top of the small sulfidation tank 6, and a radar liquid level meter is arranged in the small sulfidation tank 6; the two sulfidation inlets 7 are respectively a coarse manganese sulfate inlet and an ammonia water inlet, the small sulfidation tank 6 is first added with coarse manganese sulfate, the valve on the discharge pipe 10 is closed, the coarse manganese sulfate is pumped to the material outlet at the top of the small sulfidation tower 4 through the delivery pump 8 for spraying, the mixture of the sprayed and adsorbed hydrogen sulfide gas is sent back to the small sulfidation tank 6 through the material outlet at the bottom, and ammonia water is continuously added to the small sulfidation tank 6 during the process, so that a sulfidation reaction occurs in the small sulfidation tank 6, and the reaction principle is as follows:

[0039] MnSO4+H2S+2NH3·H2O=MnS+(NH4)2SO4+2H2O

[0040] After the hydrogen sulfide reaction is completed, the generated manganese sulfide, ammonium sulfate and water are discharged through the discharge pipe 10, the valve on the reflux pipe 9 is closed at this time, the mixture of the discharged manganese sulfide, ammonium sulfate and water is subjected to pressure filtration, the solid material is manganese sulfide, and the obtained manganese sulfide is sent into the acidification tank 1 for continuous utilization, so that the resource recycling is realized again.

[0041] The above only describes preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, any modification and replacement based on the technical solutions and the application concept provided by the present application should be covered in the protection scope of the present application.

Claims

1. A system for purifying and removing impurities from manganese sulfate, characterized by: The acidification tank (1), the acidification storage tank (2), the large sulfurization tower (3), the small sulfurization tower (4), the large sulfurization tank (5) and the small sulfurization tank (6) are included. The small sulfurization tank (6) and the large sulfurization tank (5) are each provided with two sulfurization feed ports (7) at the top and a sulfurization discharge port at the bottom, the sulfurization discharge port is connected with a reflux pipe (9) and a discharge pipe (10) through a conveying pump (8), valves are respectively installed on the reflux pipe (9) and the discharge pipe (10), the reflux pipe (9) of the small sulfurization tank (6) is connected with a material inlet at the top of the small sulfurization tower (4), a material outlet at the bottom of the small sulfurization tower (4) is connected with a mixed feed port at the lower part of the small sulfurization tank (6), the reflux pipe (9) of the large sulfurization tank (5) is connected with a material inlet at the top of the large sulfurization tower (3), a material outlet at the bottom of the large sulfurization tower (3) is connected with a mixed feed port at the lower part of the large sulfurization tank (5). The acidification tank (1) is provided with two acidification feed ports and an acidification exhaust port (13) at the top, and an acidification discharge port at the bottom, the acidification exhaust port (13) is connected with a lower gas inlet of the large sulfurization tower (3) through a pipeline. The acidification discharge port is communicated with a top feed port of the acidification storage tank (2) through a pipeline, a storage tank discharge port (14) is arranged at the bottom of one side of the acidification storage tank (2), and a storage tank exhaust port (15) is further arranged at the top of the acidification storage tank (2), the storage tank exhaust port (15) is communicated with a lower gas inlet of the small sulfurization tower (4) through a pipeline.

2. The system for purifying and removing impurities from manganese sulfate according to claim 1, characterized in that: The pipeline connected with the lower gas inlets of the small sulfurization tower (4) and the large sulfurization tower (3) is in a reverse U-shaped structure at the end.

3. The system for purifying and removing impurities from manganese sulfate according to claim 1, characterized in that: Stirrers with liquid sealing mechanisms are installed at the top of the acidification tank (1), the acidification storage tank (2), the small sulfurization tank (6) and the large sulfurization tank (5).

4. The system for purifying and removing impurities from manganese sulfate according to claim 1, characterized in that: Radar liquid level meters are installed in the acidification tank (1), the acidification storage tank (2), the small sulfurization tank (6) and the large sulfurization tank (5).

5. The system for purifying and removing impurities from manganese sulfate according to claim 1, characterized in that: A pressure sensor (16) is further installed on the large sulfurization tower (3).

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