Method used for leaching antimony and manganese simultaneously from stibnite and pyrolusite

A technology of stibnite and pyrolusite, which is applied in the field of metallurgy and chemical industry, can solve the problems of large amount of slag, affecting manganese recovery rate, low reduction rate and leaching rate, etc., achieve high leaching rate of antimony and manganese, avoid poor production environment, and reduce resource consumption. The effect of high comprehensive utilization
CN107574301AActive Publication Date: 2018-01-12CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2018-01-12

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Abstract

The invention discloses a method used for leaching antimony and manganese simultaneously from stibnite and pyrolusite. The method comprises the steps that (1) the stibnite and pyrolusite are disposedin hydrochloric acid solutions to be leached simultaneously, and then liquid-solid separation is conducted on leached ore pulp to obtain leaching liquid I containing antimony manganese salt solutionsand sulfur-containing leaching residue; (2) antimony powder is added to the leaching liquid I for restoring to obtain leaching liquid II with antimony butter and manganese chloride as priority; and (3) the leaching liquid II is hydrolyzed, and antimony oxychloride hydrolysis residue and manganese chloride solutions can be obtained after liquid-solid separation. A wet process is adopted to leach the antimony and the manganese simultaneously from the stibnite and the pyrolusite, and poor production environment, serious sulfur dioxide pollution and other problems in the pyrometallurgy process areeffectively avoided. The method is suitable for low-grade stibnite and low-grade pyrolusite to improve the utilization rate of increasingly depleted antimony ore and manganese ore resources and reduce environmental pollution.
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Description

technical field

[0001] The invention belongs to the field of metallurgy and chemical industry, and in particular relates to a method for simultaneously leaching stibnite and pyrolusite. Background technique

[0002] With the rapid development of economy and science and technology in today's world, the application fields of antimony are becoming more and more extensive. It can be used to produce various flame retardants, glass, rubber, semiconductor components, etc. At present, antimony flame retardant is the main application field of antimony, accounting for about 70% of the world's antimony sales. China is a country with large antimony resources in the world, and its antimony reserves and output both rank first in the world. Stibnite is the main antimony deposit, it is a kind of Sb 2 S 3 Mainly sulfide ore. There are two main methods of extracting antimony from antimony ore: fire method and wet method. The fire method is mainly composed of volatilization smelting and re...

Claims

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