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Application of tin hemispheres in preparation of tin chemical products

A chemical product, tin chemical technology, applied in the field of tin deep processing, can solve the problems of equipment friction and corrosion, increase the final product manufacturing cost, reduce the quality of tin chemical products, etc. Moderate surface area effect

Inactive Publication Date: 2017-06-23
YUNNAN TIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the test found that materials in the form of tin powder and tin particles have rough surfaces and large specific surface areas. They are used in synthetic reactions, especially high-speed stirring reaction systems, such as sodium stannate, metastannic acid, tin tetrachloride and formazan. During the preparation of tin-based tin chloride, the friction and corrosion of the equipment are very serious, resulting in frequent replacement of the reactor body, thereby increasing the manufacturing cost of the final product
Moreover, the preparation of tin materials in the form of tin powder and tin particles usually needs to go through two stages of high-pressure water atomization granulation and drying. The labor intensity of the workers is high, the energy consumption is high, the time is long, and the efficiency is low, and the tin powder is easy to Oxidation, thereby reducing the quality of tin chemical products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The tin ingot is made into a hemispherical tin raw material, that is, tin hemisphere. The preparation method is as follows: put the tin ingot in an electric furnace and melt it into tin liquid at 240-300 °C, remove the surface oxide slag, and separate the tin liquid with a tin scoop. Pouring in a hemispherical mold cavity with a diameter of 5-20mm, after the liquid tin solidifies, turn up the mold cavity, the tin hemisphere falls off from the mold cavity under its own gravity, enters the material bag through the trough, and then The cavity is laid flat in place for the next casting.

[0011] The obtained tin hemispheres are used for the production and preparation of stannous chloride. The method is as follows: put 1025 kg of concentrated hydrochloric acid with a concentration of 36% into the reaction kettle, start stirring, put in 500 kg of tin hemispheres, and control the reaction temperature between 50 and 80 ° C. After the reaction is completed, heat up to 90-110°C f...

Embodiment 2

[0013] The tin ingot is made into a hemispherical tin raw material, that is, tin hemisphere. The preparation method is as follows: put the tin ingot in an electric furnace and melt it into tin liquid at 300-360 °C, remove the surface oxide slag, and let the tin liquid flow into the fully automatic tin In the hemisphere machine, the diameter of the mold cavity is 15-30mm, just adjust the speed and collect the cooled tin hemisphere.

[0014] The prepared tin hemispheres are used in the preparation of tin tetrachloride. The preparation method is as follows: put 1000 kg of tin hemispheres into the reaction kettle, then add chlorine gas, and control the reaction temperature between 100 and 150 ° C. After the reaction is completed, collect four tin chloride.

Embodiment 3

[0016] The tin hemispheres prepared in Example 1 are used for the production and preparation of dimethyl tin dichloride. The preparation method is as follows: put 300 kg of tin hemispheres into the reaction kettle, start stirring, and control the reaction temperature between 200 and 230° C. Add 280 kg of monochloromethane at a certain flow rate, and after the reaction is completed, distill under reduced pressure to obtain dimethyltin dichloride.

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PUM

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Abstract

The application of tin hemispheres in the preparation of tin chemical products is to make tin ingots into hemispherical tin raw materials for the synthesis of tin-containing chemical products. The invention can reduce friction and corrosion of equipment, reduce equipment investment, reduce labor intensity of workers, reduce energy consumption, improve production efficiency and product quality stability.

Description

technical field [0001] The invention belongs to the technical field of tin deep processing, and in particular relates to the preparation and application technology of tin raw materials for preparing tin chemical products. Background technique [0002] Reducing the manufacturing cost of tin chemical products and improving the quality have always been the technical focus of the tin chemical industry for a long time. The traditional production method of tin chemical products is to make tin ingots into powder, granules, flakes, tin plates, tin bars and other forms of raw materials, and then mix them with hydrochloric acid, nitric acid, sulfuric acid, sodium hydroxide, potassium hydroxide, monochloromethane, Chlorine and other substances react under certain conditions to synthesize corresponding tin chemical products, such as stannous chloride, metastannic acid, stannous sulfate, sodium stannate, potassium stannate, methyl tin chloride and tin tetrachloride. Chinese patent CNCN1...

Claims

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Application Information

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IPC IPC(8): C01G19/06C01G19/08C01G19/00C07F7/22B22C9/22
CPCC01G19/06B22C9/22C01G19/00C01G19/08C07F7/2208
Inventor 郭应辉李祥彦胡洋魏兵易强顺梅忠华徐文光
Owner YUNNAN TIN
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