Method for extracting manganese in electrolytic manganese waste slag or low-quality manganese ore by mechanochemical method and its additives

A technology of mechanochemical method and electrolytic manganese waste residue is applied in the field of manganese in low-quality manganese ore, which can solve the problems of wasting resources and polluting the environment, and achieves the effect of improving the utilization rate, alleviating the environment, developing production, and being beneficial to comprehensive utilization.

Active Publication Date: 2014-10-08
BEIFANG UNIV OF NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, a certain amount of residual metal manganese (4-5%) is still contained in the electrolytic manganese slag, which not only wastes resources, but also pollutes the environment

Method used

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  • Method for extracting manganese in electrolytic manganese waste slag or low-quality manganese ore by mechanochemical method and its additives
  • Method for extracting manganese in electrolytic manganese waste slag or low-quality manganese ore by mechanochemical method and its additives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the electrolytic manganese waste slag, add 6% by weight of the auxiliary agent, the auxiliary agent consists of 0.5 parts of sodium dodecylbenzenesulfonate, 2.0 parts of potassium hydroxide, and 2.0 parts of iron trichloride in parts by weight, fully mixed After homogeneously, pulverize to 6 microns; then use 85wt% sulfuric acid for hot leaching, in which solid powder: liquid sulfuric acid = 1:8 by weight, hot leaching twice at 95°C, and then add the aforementioned filter aid 1.5 parts of iron trichloride, then vacuum filtration makes solid-liquid separation, so that after filtering and separating solids (a filter cake with a thickness of 20mm), (acid leaching solution) is used as an electrolytic solution for electrolytic manganese production.

[0019] Before use, the acid leaching solution can be adjusted according to the needs of the specific electrolysis process, and after the manganese content of the solid is determined, it can be used as waste for comprehensive u...

Embodiment 2

[0022] Add 8% by weight of additives to the electrolytic manganese waste residue. The additives are composed of 0.5 parts of sodium heptadecylbenzenecarboxylate, 2.0 parts of sodium carbonate, and 2.5 parts of aluminum trichloride in parts by weight. Mix well After that, crush them together to 5 microns; then use 90wt% sulfuric acid for hot leaching, in which solid powder: liquid sulfuric acid = 1:6 by weight, hot leaching for 3 times at 98°C, and then add the aforementioned filter aid three 3.0 parts of aluminum chloride, and then vacuum filtration to separate the solid and liquid, thereby filtering and separating the solid matter (a filter cake with a thickness of 20 mm), as an electrolytic solution for electrolytic manganese production.

[0023] Before use, the acid leaching solution can also be adjusted as needed, and after the manganese content of the solid is determined, it can be used as waste for comprehensive utilization or landfill according to national regulations. ...

Embodiment 3

[0026] In the electrolytic manganese waste slag, add 4% by weight of additives, the additives are composed of 0.5 parts of pull-off powder, 1.5 parts of calcium oxide, and 0.5 parts of polyacrylamide in parts by weight. After fully mixing, they are pulverized together to 3 Micron; then hot extraction with 80wt% sulfuric acid, in which solid powder: liquid sulfuric acid = 1:9 by weight, hot extraction twice at 98°C, combined extracts, and then added the aforementioned filter aid polypropylene 1.5 parts of amide, and then vacuum filtration to separate the solid from the liquid, thereby filtering out the solid (a filter cake with a thickness of 20 mm), and then use it as an electrolytic solution for electrolytic manganese production.

[0027] Before use, the acid leaching solution can also be adjusted as needed, and after the manganese content of the solid is determined, it can be used as waste for comprehensive utilization or landfill according to national regulations.

[0028] ...

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Abstract

The invention relates to a production process for extracting the manganese element by utilizing electrolytic manganese waste residues and a production process for extracting the manganese element by utilizing low-quality manganese ore, in particular to a method for extracting manganese from the electrolytic manganese waste residues or the low-quality manganese ore by utilizing a mechanochemical method and an auxiliary agent thereof. The method comprises the following steps of: adding the auxiliary agent with the weight percentage being 2.0-11.0% in the claim 1 or 2 in the electrolytic manganese waste residues or the low-quality manganese ore, fully and uniformly mixing, crushing till the diameter D 50 is 2-6mum, then carrying out heat extraction by using sulfuric acid with the weight 5-10 times that of the auxiliary agent for 2-4 times, and filtering to separate leaching liquor for producing the electrolytic manganese. The method has the advantages that the auxiliary agent is added in the treatment process of the electrolytic manganese waste residues or the low-quality manganese ore, and is crushed together with the electrolytic manganese waste residues or the low-quality manganese ore so as to generate certain-level action, then the heat extraction is carried out by using the sulfuric acid, and after solid-liquid separation, the content of the manganese in the waste residues is reduced to about 0.1%, or even lower.

Description

technical field [0001] The invention relates to a production process for extracting manganese element by using electrolytic manganese waste slag and a production process for extracting manganese element by using low-quality manganese ore, especially a method for extracting manganese in electrolytic manganese waste slag or low-quality manganese ore by using mechanochemical method and its additives . Background technique [0002] Manganese is an indispensable metal element in modern industry. Manganese metal is one of the indispensable and important raw materials for materials, metallurgy, steel and other industries. Among them, the most widely used is as an additive element of stainless steel. Manganese alloys can improve the strength of materials, durability Corrosion and abrasion resistance. [0003] At present, most enterprises adopt the process route of electrolysis to produce manganese metal, which generally uses manganese carbonate ore as raw material, which is crushed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B47/00
CPCY02P10/20
Inventor 祁利民韩凤兰王慧
Owner BEIFANG UNIV OF NATITIES
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