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Device and method for producing antimony white from antimony oxide powder

A technology of antimony oxide powder and antimony white, which is applied in the direction of antimony oxide/antimony hydroxide/antimony oxyacid, chemical instruments and methods, antimony compounds, etc. It can solve the problems of complex process flow and high production cost, and achieve operational process flow The effect of simplicity, low production cost and high recovery rate

Pending Publication Date: 2021-12-17
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a device and method for producing antimony white from antimony oxygen powder, so as to solve the problem of complicated process and high production cost in the prior art when using antimony oxygen powder as raw material to indirectly produce antimony white

Method used

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  • Device and method for producing antimony white from antimony oxide powder
  • Device and method for producing antimony white from antimony oxide powder

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Source of raw materials: Antimony oxide powder is produced in the blast furnace workshop of the antimony smelter of Xikuangshan Shanxing Antimony Industry Co., Ltd., and its composition is as follows:

[0049] Material name Sb 2 o 3

S al 2 o 3

SiO 2

CaO FeO Fe 2 o 3

MgO Antimony oxide powder (g) 58.26 0.25 - 40.26 0.050 0.02 1.05 0.11

[0050] use figure 1 The shown device diagram produces antimony white from the above-mentioned raw materials, and the steps are as follows:

[0051] 100 kg of the above antimony oxide powder was compacted (size: 20×20×36 mm) and dried to obtain an antimony oxide block.

[0052] Put the above-mentioned antimony oxide block into the vacuum furnace, evacuate the vacuum furnace through a vacuum pump and heater and heat it at the same time (heating rate is 20°C / min), so that the pressure in the furnace is 40Pa and the temperature is 600°C. Keeping it under the above conditions f...

Embodiment 2

[0056] The difference from Example 1 is only that the temperature in the vacuum furnace is 615°C. Obtain antimony white 56.8kg, Sb in antimony white 2 o 3 The content is 99.5%, and the recovery rate of antimony white is 97.5%. The recovery rate of antimony element is 71.5%.

Embodiment 3

[0058] The difference with embodiment 1 is only that the pressure in the vacuum furnace is 35Pa.

[0059] Obtain antimony white 56.5kg, Sb in antimony white 2 o 3 The content is 99.6%, and the recovery rate of antimony white is 97.0%. The recovery rate of antimony element was 70.9%.

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Abstract

The invention provides a device and method for producing antimony white from antimony oxide powder. The device comprises a vacuum furnace, condensing equipment and a vacuumizing unit which are horizontally and sequentially communicated. The vacuum furnace comprises a furnace body. A heater is arranged in the furnace body, and the furnace body is provided with an antimony oxide powder inlet. By means of the device, the antimony oxide powder can be directly heated and volatilized in vacuum to obtain the antimony white, the operation technological process is simpler, the production cost is lower, the antimony white recovery rate is higher, and the obtained antimony white is also higher in purity.

Description

technical field [0001] The invention relates to the field of metal smelting, in particular to a device and method for producing antimony white from antimony oxygen powder. Background technique [0002] Antimony oxide powder is an intermediate product produced by volatilization and smelting of antimony concentrate, which is mainly used to reduce and produce crude antimony. Antimony oxide powder is in powder form, and its main component is Sb 2 o 3 , and a small amount of SiO 2 and other impurities. Antimony white is antimony trioxide (chemical formula: Sb 2 o 3 ) commonly known as, mainly used in the production of flame retardants mainly used in plastics, resins, rubber, textiles, paints and other combustibles as flame retardant synergists and catalysts for petrochemical and synthetic fibers. The content of antimony trioxide in antimony white is more than 99%. [0003] Generally, the antimony white production process is divided into fire method and wet method, and fire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B5/05F27B5/14C01G30/00
CPCF27B5/04F27B5/14C01G30/005C01P2006/80
Inventor 马登李东波陈学刚邓兆磊裴忠冶黎敏
Owner CHINA ENFI ENGINEERING CORPORATION