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Method for directly leaching electrolytic zinc anode mud manganese dioxide

A manganese dioxide, electrolytic zinc technology, applied in the direction of improving process efficiency, etc., can solve the problems such as no related technology and patent documents, occupying land resources, and potential safety hazards, and achieves easy implementation and promotion, simple process, and easy operation. easy effect

Inactive Publication Date: 2011-08-31
济源市东方化工有限责任公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

Long-term accumulation not only occupies land resources but also pollutes the environment and poses safety hazards
The traditional manganese smelting method uses manganese dioxide as the raw material, all of which are smelted by fire. This traditional process has high energy consumption, large investment, and is easy to cause pollution to the environment.
So far, there are no relevant technologies and patent documents for this type of manganese smelting

Method used

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  • Method for directly leaching electrolytic zinc anode mud manganese dioxide

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Embodiment 1

[0019] When removing impurities from heavy metals in the slurry leach solution, the filtered manganese sulfate solution is controlled at a temperature of 55-60°C and a pH value of 2.0-3.0, and barium sulfide reagent is added slowly. Containing 1 / 30 of the manganese mass, a qualified manganese sulfate solution can be obtained after removing impurities from heavy metals. The content of each trace element in the qualified manganese sulfate solution is shown in Table 2. Press filtration is carried out after passing the test, and the qualified solution can be directly removed. Production of MnSO 4 ·H 2 O finished product or supply electrolytic zinc production system to supplement metal manganese. The hydrogen peroxide used is a reducing agent, which must react under acidic conditions.

[0020] Table 1 is the content of various trace elements in the leachate:

[0021] element

[0022] Table 2 is the content of trace elements after manganese sulfate solution purification...

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Abstract

The invention relates to a method for directly leaching electrolytic zinc anode mud manganese dioxide, in particular to a method for directly leaching an electrolytic zinc anode mud manganese dioxide by adopting a process for recovering metal manganese with a wet method and using electrolytic zinc anode mud manganese dioxide as a raw material. The technical scheme of the invention is realized by the following steps of: conveying a blocky and flaky manganese dioxide raw materials into a ball mill for ball-milling; after ball-milling the manganese dioxide raw material by the ball mill, directly entering a pulpifying pool for pulpifying and carrying out heavy metal impurity removal on pulpified leaching liquid to obtain a qualified manganese sulfate solution; and directly providing the qualified manganese sulfate solution for an electrolytic zinc manufacturer to meet the requirement of electrolytic zinc on manganese. Because the process is reasonable, the method can ensure that the qualified manganese sulfate solution is produced. Additionally, the method for recovering metal manganese by wet method smelting is adopted, and the aims of energy saving, emission reduction and green smelting are achieved. The invention has the advantages of simple process, less investment and low energy consumption. Because the operation is simple and convenient, the method is easy for application and popularization.

Description

technical field [0001] The invention relates to a method for directly leaching manganese dioxide from electrolytic zinc anode slime, in particular to a method for direct leaching of electrolytic zinc anode slime manganese dioxide using electrolytic zinc anode slime manganese dioxide as a raw material for wet recovery of metal manganese. Background technique [0002] Market surveys found that anode slimes containing manganese metal and manganese-containing crystalline slags containing manganese metal were accumulated in various electrolytic zinc production plants across the country. Long-term accumulation not only occupies land resources but also pollutes the environment and poses safety hazards. The traditional manganese smelting method uses manganese dioxide as the raw material, and all of them use pyrometallurgy. This traditional process has high energy consumption, large investment, and is easy to cause pollution to the environment. So far, there are no relevant technolo...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B3/08C22B47/00
CPCY02P10/20
Inventor 梁京宁张强杨川丽张占伟曹伟倪恒发张全胜
Owner 济源市东方化工有限责任公司
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