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Method for increasing diantimony trioxide particle size during wet production process of diantimony trioxide

A technology of antimony trioxide and wet method, applied in chemical instruments and methods, inorganic chemistry, antimony compounds, etc.

Active Publication Date: 2013-03-20
HUNAN CHENZHOU MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Since the particle size of high-purity antimony oxide is generally in the range of 2-3 μm, the applicant found that there is a further requirement for increasing the particle size in the market during the production process. Therefore, how to improve the purity of antimony oxide while maintaining a relatively high purity The granularity of products is also a difficult problem faced by technicians

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  • Method for increasing diantimony trioxide particle size during wet production process of diantimony trioxide
  • Method for increasing diantimony trioxide particle size during wet production process of diantimony trioxide
  • Method for increasing diantimony trioxide particle size during wet production process of diantimony trioxide

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Embodiment Construction

[0035] The following examples are intended to further illustrate the present invention, rather than limit the present invention.

[0036] The flow process of industrialized production of the present invention is as follows:

[0037] Table 1 Contents of main components of a certain mineral source

[0038] Sb% Pb% As% Bi% Cu% Aug / t SiO 2 % h 2 O% 45.38 0.59 0.27 0.0018 0.1 0.5 26.58 14.4

[0039] Add the chlorinated leaching solution of the -80 mesh antimony sulfide concentrate to the antimony sulfide concentrate for primary reduction; add sodium thiosulfate to the primary reduction solution to remove impurities, and the added quality of sodium thiosulfate is 0.8% of the mass content of arsenic in the primary reduction solution. ~1.4 times; (sodium thiosulfate is industrial grade, main content 99.96%) react for 2-5 hours. Filter, and the filtrate precipitates for no less than 2 hours. Filter the precipitated solution, p...

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Abstract

The invention relates to a method for increasing a diantimony trioxide particle size during a wet production process of diantimony trioxide. The method comprises: carrying out leaching and reduction on an antimony solution, increasing a water temperature to 50 DEG C before hydrolysis, sequentially adding water and the antimony solution, adjusting use amounts of tartaric acid and ethylenediaminetetraacetic acid disodium salt during neutralization, controlling a neutralization temperature to a room temperature, and drying to prepare the high purity antimony oxide product, wherein contents of lead, arsenic, iron and other impurities can be controlled to less than 20 ppm, and an average particle size is 5-6 mum.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy, and relates to a method for producing high-purity antimony trioxide by treating antimony sulfide concentrate with a chlorination-hydrolysis method and changing the granularity of the coarse product. Background technique [0002] The metal antimony is rarely used alone, and various compounds of antimony and alloys of antimony and lead, tin, copper and other metals have a wide range of uses. The flame retardant industry is the largest antimony-consuming field in the world today, and the antimony consumption accounts for about 70%-75% of the world's total antimony consumption. Antimony oxide is an excellent flame retardant synergist, which can produce a good flame retardant and self-extinguishing effect when it works together with halides. Antimony-based flame retardants are widely used in plastics, electrical components and chemical fiber textiles. [0003] With the wide use of polymer synthetic ma...

Claims

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Application Information

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IPC IPC(8): C01G30/00
Inventor 王国辉张宏智许霞梁耀华
Owner HUNAN CHENZHOU MINING CO LTD
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