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Method for preparing nano-grade antimonous oxide

A nano-scale technology of antimony trioxide, applied in the field of preparation of nano-scale antimony trioxide, can solve the problems of insufficient purity of antimony trioxide and the demand for market progress, and achieve simple structure, high particle fineness, The effect of high purity

Active Publication Date: 2015-02-04
SHANTOU SHUANGPENG PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention has simple structure and low production cost. The preparation of antimony trioxide by using the present invention only needs compressed air instead of pure oxygen. Although the invention discloses a catalyst-grade antimony trioxide preparation device, with the advancement of science and technology progress, the purity of the antimony trioxide produced by it still cannot meet the needs of market progress

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Using 400g metal antimony as raw material, its chemical composition is: Sb 99.44%, AS 0.02%, Pb 0.21%, Fe 0.011%, and other elements 0.00021%. Raise the temperature of the antimony white furnace to 1100°C, put metal antimony into the front chamber of the antimony white furnace to melt it, start the rotary blower in the front chamber, and make the rotary blower start to blow, and the air volume of the blower is 70m 3 / h, and then blow air into the top blowing pipe and the bottom blowing pipe respectively, the blowing volume of the top blowing pipe is 0.2MPa, the flow rate is 80m 3 / h, the blowing volume of the blowpipe at the bottom is 0.3MPa, the flow rate is 200m 3 / h to oxidize and volatilize antimony to form antimony trioxide furnace gas; then raise the furnace temperature to 1300°C, then introduce antimony trioxide furnace gas into the reactor, when the liquid level is higher than the height of the bottom ventilation pipe, Open the bottom ventilation duct for blowi...

Embodiment 2

[0036] Using 30 kg of metal antimony as raw material, its chemical composition is: Sb 99.71%, AS 0.067%, Pb 0.13%, Fe 0.010%, raise the temperature of the antimony white furnace to 1100°C, and put metal into the front chamber of the antimony white furnace Antimony, to melt it, start the rotary blower in the front chamber, so that the rotary blower starts to blow, and the blowing volume of the blower is 180m 3 / h, and then blow air into the top blowing pipe and the bottom blowing pipe respectively, the blowing volume of the top blowing pipe is 0.8MPa, the flow rate is 250m 3 / h, the blowing volume of the bottom blowing pipe is 0.5MPa, the flow rate is 700m 3 / h to oxidize and volatilize antimony to form antimony trioxide furnace gas; then raise the furnace temperature to 1300°C, then introduce antimony trioxide furnace gas into the reactor, when the liquid level is higher than the height of the bottom ventilation pipe, Open the bottom ventilation duct for blowing, the air volu...

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Abstract

The invention discloses a method for preparing nano-grade antimonous oxide. The method comprises the following steps: 1, heating an antimony white furnace, and leading metallic antimony into a front hearth of the antimony white furnace for melting; 2, starting a rotating air blower on the top of the front hearth of the antimony white furnace so as to oxidize and volatilize antimony to form an antimonous oxide oxidization furnace gas; 3, blowing air to a top air blowing tube and a bottom air blowing tube at a middle hearth; 4, leading the antimonous oxide oxidization furnace gas into a reaction chamber for reaction; and 5, leading the antimonous oxide oxidization furnace gas into a double-layer crystallizer, passing through a natural air cooling and annular cooling pipeline, cooling, crystallizing on a crystallization baffle, and collecting by using a cloth bag dust collector, thereby obtaining antimonous oxide.

Description

technical field [0001] The invention relates to a method for preparing antimony trioxide, in particular to a preparation method for nanometer antimony trioxide. Background technique [0002] The preparation of nanoscale antimony trioxide is an important raw material in chemical production. As a flame retardant in chemical reaction, it is required that the antimony trioxide not only has high purity, but also does not contain high-priced antimony tetroxide. It is required to have a high flame retardant effect. [0003] Among the existing antimony trioxide equipment, some devices for preparing antimony trioxide are disclosed, [0004] In recent years, some published documents have reported methods for preparing antimony trioxide, such as: [0005] 1. Chinese patent, application number: CN201210097320.4, application date: 2012.04.05 Name: catalyst-grade antimony trioxide preparation device, abstract: the invention discloses a catalyst-grade antimony trioxide preparation device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G30/00B82Y30/00
CPCC01G30/00C01P2006/80
Inventor 林天祥
Owner SHANTOU SHUANGPENG PLASTIC IND
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