Method for producing antimonous oxide by wet method to improve whiteness

A technology of antimony trioxide and whiteness, used in chemical instruments and methods, inorganic chemistry, antimony compounds, etc.

Active Publication Date: 2011-05-25
HUNAN CHENZHOU MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the cases listed in its patent, the whiteness of its high-purity antimony oxide is 88.0-90.8, and there is still a big gap in the whiteness of the product compared with the fire-processed antimony oxide

Method used

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  • Method for producing antimonous oxide by wet method to improve whiteness
  • Method for producing antimonous oxide by wet method to improve whiteness

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Embodiment Construction

[0032] The following examples are intended to further illustrate the present invention, rather than limit the present invention.

[0033] Table 1 Raw ore composition

[0034] name

Sb

Au

Pb

As

Cu

H 2 0

Fuxing, You County, Hunan

54.50

0.67g / t

0.37％

0.49％

0.015％

12.1％

[0035] The flow process of industrialized production of the present invention is as follows:

[0036] Add the chlorinated leaching solution of the above-80 mesh antimony sulfide concentrate (chlorination leaching adopts the chlorination leaching method of the invention patent CN 1041787A) to the antimony sulfide concentrate for primary reduction; pass excessive chlorine gas into the filtrate for oxidation, and the oxidation reaction temperature is 50- 90°C; react until elemental sulfur is precipitated and the solution is bright reddish brown, filter, precipitate for no less than 2 hours, filter, and cool to 10-40°C. The cooled solution ...

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Abstract

The invention discloses a method for producing high-purity antimonous oxide by treating antimony sulfide concentrate to improve product whiteness, which comprises the following steps of: performing leaching and primary reduction, rising the temperature of solution, introducing chlorine for oxidation, performing precipitation for at least 2 hours, performing secondary reduction, adding copper sulfate into the secondary reduction solution for reaction, filtering the reaction solution, adding water for hydrolysis, adding a transformation agent for transformation, and drying the transformed solution to obtain the product with the whiteness of 93 to 95.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy and relates to a method for improving whiteness when treating antimony sulfide concentrate with a chlorination-hydrolysis method to produce high-purity antimony trioxide. Background technique [0002] The process of producing high-purity antimony trioxide by wet chlorination-hydrolysis began in the 1950s. With the continuous development of technology, its technology level has gradually matured and the indicators of various chemical elements in the product are significantly lower than those of the fire method. It fully complies with the environmental protection product requirements advocated by the state, but compared with the pyrolytic antimony oxide, the whiteness of the product is slightly lower. [0003] In the invention patent (CN1041787A) of Professor Tang Motang of Central South University of Technology about "the treatment method of high lead and high arsenic antimony sulfide ore", the chlori...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G30/00
Inventor 王晶王国辉张宏智许霞
Owner HUNAN CHENZHOU MINING CO LTD
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