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Purification treatment method of manganese sulfate solution

The technology of a manganese sulfate solution and a treatment method is applied in the purification field of manganese-containing solution, which can solve the problem of high purification treatment cost and achieve the effect of reducing loss

Active Publication Date: 2020-06-16
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
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  • Claims
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Problems solved by technology

[0006] The main purpose of the present invention is to provide a kind of purification treatment method of manganese sulfate solution, to solve the problem that the purification treatment cost of manganese sulfate solution in the prior art is high

Method used

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  • Purification treatment method of manganese sulfate solution

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Embodiment 1

[0038] Preparation of saponified organic phase: Take 1L of manganese sulfate solution, which contains: 30g / L of Mn 2+ , 0.3g / L of Ca 2+ and 15g / L of Mg 2+ . Adjust the pH value of manganese sulfate solution to 3, control the volume ratio of P204 extractant and sulfonated kerosene to be 1:5, prepare 1L of organic extractant, and use ammonia water with a concentration of 8mol / L to saponify the organic extractant to form ammonia The organic phase was saponified, wherein the saponification rate was 70%.

[0039] Extraction: use the ammonia-saponified organic phase manganese sulfate solution to carry out 5-stage countercurrent extraction to obtain a manganese-rich organic phase and a calcium-magnesium-containing aqueous phase. Among them, the volume ratio of saponified organic phase to manganese sulfate solution in each stage is 3:2, the temperature of each stage of extraction is 25°C, and the time of each stage of extraction is 5 minutes.

[0040] First washing: using water to...

Embodiment 2

[0045] The difference between embodiment 2 and embodiment 1 is that the manganese sulfate solution in embodiment 2 comprises: the Mn of 10g / L 2+ , 0.1g / L of Ca 2+ and 5g / L of Mg 2+ . Through calculation, it can be seen that the removal rate of calcium ions in the manganese sulfate solution is 99.3%, and the removal rate of magnesium ions is 97.1%.

Embodiment 3

[0047] The difference between embodiment 3 and embodiment 1 is that the manganese sulfate solution in embodiment 3 comprises: the Mn of 50g / L 2+ , 0.5g / L of Ca 2+ and 20g / L of Mg 2+ . Through calculation, it can be known that the removal rate of calcium ions in the manganese sulfate solution is 99.3%, and the removal rate of magnesium ions is 96.9%.

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Abstract

The invention provides a purification treatment method of a manganese sulfate solution. The purification treatment method comprises the following steps: S1, preparing an extraction organic phase, andsaponifying the extraction organic phase to obtain a saponified organic phase; S2, extracting the manganese sulfate solution by using the saponified organic phase to obtain a manganese-rich organic phase; S3, washing the manganese-rich organic phase for the first time by adopting water to obtain a primary purified manganese-rich organic phase; S4, washing the primary purified manganese-rich organic phase for the second time by adopting a manganese-containing strong acid solution to obtain a secondary purified manganese-rich organic phase; and S5, carrying out reverse extraction on the secondary purified manganese-rich organic phase by using sulfuric acid to obtain a high-purity manganese sulfate solution and a regenerated organic phase. According to the method, pure manganese sulfate doesnot need to be adopted for carrying out manganese conversion saponification on the saponification organic phase, and the used washing liquid is cheap water and a manganese-containing strong acid solution, so that the purification treatment cost is relatively low.

Description

technical field [0001] The invention relates to the technical field of purification of manganese-containing solutions, in particular to a purification treatment method of manganese sulfate solution. Background technique [0002] Manganese and its compounds are one of the important industrial raw materials. In recent years, with the continuous progress of my country's electronic chemical industry (such as electrolytic manganese, chemical manganese dioxide, magnetic manganese tetraoxide and other electronic chemicals with high quality requirements and high purity), as these high-standard electronic chemicals The quality of manganese sulfate, which is the raw material for production, has also attracted much attention. And lithium manganese oxide and ternary materials may replace lithium cobalt oxide as the main battery cathode material in the next few years, and the consumption of manganese sulfate as its main raw material will also continue to increase with the rise of the lit...

Claims

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Application Information

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IPC IPC(8): C01G45/10
CPCC01G45/10C01G45/003
Inventor 曹敏刘苏宁殷书岩孙宁磊丁剑
Owner CHINA ENFI ENGINEERING CORPORATION
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