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Preparation method of tin oxide electrode for glass electric melting furnace

A technology of tin dioxide and glass electricity, applied in the directions of tin oxide, electric furnace, furnace, etc., can solve the problems of poor electrical conductivity of electrodes, difference in service life of electrodes, etc., to achieve improved service life, simple method and operation, and improved electrical performance and physical and chemical properties. performance effect

Inactive Publication Date: 2008-05-21
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for preparing tin dioxide electrodes for glass electric melting furnaces, so as to solve the problem that the electrodes are traditionally prepared with industrial tin dioxide raw materials in the prior art, and the electrode conductivity is poor, and the service life of the electrodes imported from abroad There are big gaps and other disadvantages

Method used

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  • Preparation method of tin oxide electrode for glass electric melting furnace
  • Preparation method of tin oxide electrode for glass electric melting furnace
  • Preparation method of tin oxide electrode for glass electric melting furnace

Examples

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Embodiment 1

[0018] Analytical pure antimony trichloride (SbCl 3 ) and tin tetrachloride (SnCl 4 ) as raw material, according to Sb 2 o 3 with SnO 2 Weigh and dissolve with a mass ratio of 1:99, add deionized water to a certain volume, and slowly add a certain concentration of ammonia water to the mixed solution under magnetic stirring to carry out coprecipitation reaction, wash the precipitate with deionized water until it is washed with 0.1 mol / L AgNO 3 Check for Cl - exists, and then washed three times with absolute ethanol to obtain the precursor, dried, ground, and calcined at 650°C for 2 hours to obtain Sb 2 o 3 doped ultrafine SnO 2 powder; the prepared Sb 2 o 3 doped ultrafine SnO 2 The powder is initially pressed, dried, and sintered at 1350° C. to obtain the tin dioxide electrode for glass electric melting furnace of the present invention.

Embodiment 2

[0020] Analytical pure antimony trichloride (SbCl 3 ) and tin tetrachloride (SnCl 4 ) as raw material, according to Sb 2 o 3 with SnO 2 The mass ratio is 1.5:98.5, weigh and dissolve, add deionized water to a certain volume, under magnetic stirring, slowly add a certain concentration of ammonia water to the mixed solution for co-precipitation reaction, wash the precipitate with deionized water until it is washed with 0.1 mol / L AgNO 3 Check for Cl - exists, and then washed three times with absolute ethanol to obtain the precursor, dried, ground, and calcined at 560°C for 2 hours to obtain Sb 2 o 3 doped ultrafine SnO 2 powder; the prepared Sb 2 o 3 doped ultrafine SnO 2 The powder is initially pressed, dried, and sintered at 1400° C. to obtain the tin dioxide electrode for glass electric melting furnace of the present invention.

Embodiment 3

[0022] To analyze pure copper chloride (CuCl 2 ) and tin tetrachloride (SnCl 4 ) as raw material, according to CuO and SnO 2 Weigh and dissolve with a mass ratio of 1:99, add deionized water to a certain volume, and slowly add a certain concentration of ammonia water to the mixed solution under magnetic stirring to carry out coprecipitation reaction, wash the precipitate with deionized water until it is washed with 0.1 mol / L AgNO 3 Check for Cl - exist, and then washed three times with absolute ethanol to obtain the precursor, dried, ground, and calcined at 580 ° C for 2 h to obtain CuO-doped ultrafine SnO 2 Powder; CuO-doped ultrafine SnO 2 The powder is initially pressed, dried, and sintered at 1300° C. to obtain the tin dioxide electrode for glass electric melting furnace of the present invention.

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Abstract

The invention relates to a method of preparing tin oxide electrodes used in glass electric melting furnaces. Stannic chloride (SnCl4) and metal chlorides are used as raw materials. A chemical coprecipitation method is adopted to prepare a former body, which is sintered at low temperature to obtain tin oxide superfine powder, which is evenly doped 1-3 percent of metal. Then, the powder is pressed to be molded, dried and sintered for 3-8 hours under the temperature of 1300-1400 degree Celsius. And a high dense tin oxide electrode is obtained, the density of which is larger than 6.5g / cm<3>. The electrode prepared through the invention improves the electrical property and the physical and chemical property of a glass electrode and prolongs the service life. The method is simple to be operated, which is applied to the industrialized production.

Description

technical field [0001] The invention belongs to the field of preparation of chemical electrodes, in particular to a preparation method of a tin dioxide electrode for glass electric melting. Background technique [0002] Tin dioxide ceramics are widely used in glass electric melting furnaces because they are not easily corroded by lead glass, iron, copper, antimony and other glasses. At present, the tin dioxide electrode in my country mainly adopts industrial tin dioxide powder, which is doped with manganese oxide, antimony oxide, copper oxide and other oxides with a content of 1-3%, and then sintered at 1400-1480°C to prepare relatively dense tin dioxide. tin electrodes. The electrode preparation process uses mechanical mixing, so the electrode components are relatively uneven. At the same time, wet mixing is used. Due to the hydrophilicity of zinc oxide, zinc oxide cannot be mixed in the preparation process, so the conductivity of the electrode is poor, which is different f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B5/02C01G19/02
Inventor 汪庆卫宁伟罗理达刘洁
Owner DONGHUA UNIV
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