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Method for preparing catalyst grade antimony trioxide

A technology of antimony trioxide and catalyst, which is applied in the field of pyrochemical production of antimony trioxide ultrafine powder, which can solve the problems of high production capacity consumption and insufficient purity, and achieve the effect of simple equipment, high purity and high activity

Active Publication Date: 2014-03-26
广西华锑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a preparation method of catalyst-grade antimony trioxide, which overcomes the shortcomings of high production capacity consumption and insufficient purity in the prior art, reduces energy consumption, improves product purity, does not require external heat sources or oxygen, and reduces production. purpose of low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Using 300g of metal antimony as raw material, raise the temperature of the antimony white furnace to 1000°C, put metal antimony into the front chamber of the antimony white furnace to melt it, and blast a top blower into the top and side of the front chamber of the antimony white furnace respectively and one side blowing to oxidize and volatilize antimony to form antimony trioxide. 3 / h, one side blowing is a Roots blower, and the air volume is 100m3 / h, and maintain the furnace temperature of the forehearth at 1100°C; introduce the antimony trioxide furnace gas into the breech of the antimony white furnace, and blow into the top and side of the breech respectively for the second top blowing and the second side blowing. The top air is blown by a Roots blower, and the air volume is 80m 3 / h, the secondary side blowing is Roots blower blowing, the air volume is 100m 3 / h, after further raising the temperature of the antimony white furnace gas to 1200°C, then introduce th...

Embodiment 2

[0036] Using 50 kg of metal antimony as raw material, raise the temperature of the antimony white furnace to 1000°C, put metal antimony into the front chamber of the antimony white furnace to melt it, and blast the top and side parts of the front chamber of the antimony white furnace once respectively. Blowing and primary side blowing to oxidize and volatilize antimony to form antimony trioxide. 3 / h, one side blowing is a Roots blower, and the air volume is 250m 3 / h, and maintain the furnace temperature of the forehearth at 1200°C; introduce the antimony trioxide furnace gas into the breech of the antimony white furnace, and blow into the top and side of the breech respectively for the second top blowing and the second side blowing. The air blowing at the top is a Roots blower, and the air volume is 200m 3 / h, the secondary side blowing is a Roots blower, and the air volume is 250m 3 / h, after further raising the temperature of the antimony white furnace gas to 1300°C, the...

Embodiment 3

[0038] Using 20 kg of metal antimony as raw material, raise the temperature of the antimony white furnace to 1000°C, put metal antimony into the front chamber of the antimony white furnace to melt it, and blast the top and side parts of the front chamber of the antimony white furnace once respectively. Blowing and primary side blowing to oxidize and volatilize antimony to form antimony trioxide. 3 / h, one side blowing is a Roots blower, and the air volume is 200m 3 / h, and maintain the furnace temperature of the forehearth at 1150°C; introduce the antimony trioxide furnace gas into the breech of the antimony white furnace, and blow into the top and side of the breech respectively for the second top blowing and the second side blowing, and the second The top air is blown by a Roots blower, and the air volume is 150m 3 / h, the secondary side blowing is a Roots blower, and the air volume is 200m 3 / h, after the temperature of antimony white furnace gas is further raised to 1250...

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PUM

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Abstract

The invention discloses a method for preparing catalyst grade antimony trioxide. The method comprises the following steps of: melting metal antimony, generating antimony trioxide furnace gas, cooling and crystallizing the antimony trioxide furnace gas, and trapping by using a dust collecting system to obtain the catalyst grade antimony trioxide of which the average particle size is 0.1 to 0.5mu m, the main component Sb2O3 is over 99.9 percent, residues on a 325-mesh sieve are less than 0.002 percent, ethylene glycol (EG) transmittance is over 98 percent, the whiteness is more than 99, and the b value is less than 0.9. The method has the advantages of stable quality, high capacity, low energy consumption, production operation control stability, high raw material adaptability and obvious economic benefit.

Description

technical field [0001] The invention relates to a method for producing antimony trioxide superfine powder by fire method, in particular to a method for preparing catalyst-grade antimony trioxide. Background technique [0002] Catalyst-grade antimony trioxide is an important chemical raw material. When it is used as a catalyst in the polyester polycondensation reaction process, it is required that the catalyst not only have high purity, but also do not contain high-priced antimony trioxide. High catalytic activity is required. At present, the production of catalyst-grade antimony trioxide is generally prepared by the fire method, and there are several methods: one method is the plasma production method, the second method is the production method of electric heating or heating outside the reaction chamber, and the third method is the plasma production method. The first method is to add oxygen blast production method. [0003] In recent years, some published documents have re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G30/00B01J23/644
Inventor 石建荣刁守国王松林唐贤华蒙飞碧马柳军韦华黄卫扬
Owner 广西华锑科技有限公司