Method for deep removal of molybdenum in manganese sulfate solution by fresh nano-hydrated manganese oxide

A technology of manganese sulfate solution and hydrated manganese oxide, which is applied in the direction of manganese oxide/manganese hydroxide, manganese sulfate, nanotechnology, etc., can solve the problems of high cost and complicated procedures, and achieve reduced slag disposal costs, good stability, and low cost. cost effect

Inactive Publication Date: 2019-09-17
GUIZHOU UNIV +1
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  • Claims
  • Application Information

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Problems solved by technology

Although better processing results can be obtained, the procedure is complicated and the cost is high

Method used

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  • Method for deep removal of molybdenum in manganese sulfate solution by fresh nano-hydrated manganese oxide
  • Method for deep removal of molybdenum in manganese sulfate solution by fresh nano-hydrated manganese oxide
  • Method for deep removal of molybdenum in manganese sulfate solution by fresh nano-hydrated manganese oxide

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the examples, but not as a basis for limiting the present invention.

[0022] 1. The applicant carried out the following example verification by taking 100L manganese sulfate solution. After testing, the initial solution pH value = 5.5, molybdenum content = 3.51mg / l, and proceeded according to the following steps, adding an oxidizing agent to the manganese sulfate solution, adding the oxidizing agent The molar ratio of the molybdenum content to the molybdenum content in the manganese sulfate solution is 100-500:1, stirring and reacting for 10-30 minutes, the manganese ions in the manganese sulfate solution are oxidized and form new nano-manganese oxide, and the pH value of the solution is adjusted to 2- 4, filter after stirring and reacting for 10-30 minutes, the filtrate is the manganese sulfate solution after purification, carry out the following examples;

[0023]

[0024]

[0025] 2. Tak...

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Abstract

The invention discloses a method for deep removal of molybdenum in a manganese sulfate solution by a fresh nano-hydrated manganese oxide. The method comprises the following steps: adding an oxidizing agent to the manganese sulfate solution, performing stirring and carrying out a reaction, oxidizing manganese ions in the manganese sulfate solution to form fresh nanometer manganese oxide, adjusting a pH value of the solution, and performing stirring and carrying out a reaction and then performing filtering to obtain a filtrate, namely a purified manganese sulfate solution. The method for deep removal of molybdenum in a manganese sulfate solution has the advantages of simplicity, high efficiency, low cost and good stability, deficiencies of existing methods are solved, requirements of a molybdenum content of a manganese sulfate solution for preparing high-purity manganese-based materials are met, the fresh nano-hydrated manganese oxide used for molybdenum removal is generated in situ in the manganese sulfate solution, and does not need to be separately prepared. The treatment process does not need to be heated, no other preparations are needed for auxiliary filtration, a molybdenum content of a filtered manganese sulfate solution can be 0.015 mg / L or less, and needs of subsequent high-purity manganese-based material production are met.

Description

technical field [0001] The invention relates to a method for removing molybdenum in manganese sulfate solution, in particular to a method for deeply removing molybdenum in manganese sulfate solution by nascent nanometer hydrated manganese oxide. Background technique [0002] Manganese sulfate is the basic raw material for the preparation of high-purity manganese sulfate, electrolytic manganese dioxide, nickel-cobalt-manganese ternary materials, lithium manganate, high-purity electrolytic metal manganese, and high-ratio manganese tetraoxide. Molybdenum is an impurity element in manganese sulfate, which enters the solution during the acid leaching process of manganese ore, affecting the quality of subsequent products. As the downstream industries, especially the battery industry, have continuously improved product quality requirements, the control of molybdenum content in manganese sulfate has become increasingly stringent. For example, the manganese sulfate solution used in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/10C01G45/02B82Y40/00
CPCB82Y40/00C01G45/02C01G45/10C01P2002/72
Inventor 王海峰王家伟肖居广况顺达杨启奎赵平源高昭伟吴睿林胡平
Owner GUIZHOU UNIV
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