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Method for preparing selenium-copper intermediate alloy

A technology of master alloy and reducing agent, applied in the field of preparation of selenium-copper master alloy, can solve the problems of inability to ensure sufficient and complete reaction of selenium and copper, control of unfavorable components, waste of rare and precious element selenium evaporation, etc., and achieve stable and single product composition. , the production equipment is simple, easy to control the effect

Inactive Publication Date: 2011-11-16
四川中蓝基业新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in the actual operation process, can not guarantee that the selenium and copper that are used to prepare the selenium-copper master alloy react fully and completely, and the copper-selenium master alloy finally obtained is actually a mixture of selenium, copper, and a three-phase selenium-copper compound, which is not conducive to The control of components when using this master alloy to prepare other alloys; and the melting point of selenium is much lower than that of copper. When preparing by high temperature fire method, the temperature exceeds the boiling point of selenium, which will inevitably cause the evaporation and waste of rare and precious element selenium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Add 1 part of selenium with a purity of 99 to 99.999 wt%, 0.2 part of metal sodium, and 0.3 part of metal potassium into a reaction kettle with a stirrer and a thermometer, and the vacuum degree is 0.05 MPa, and react at a temperature of 200 ° C for 1 h. obtain selenium compounds;

[0026] (2) Add the above-mentioned selenide and water into the reaction kettle according to the solid-to-liquid ratio of 1:2 to 10 mass ratio, stir, mix and dissolve it, then add 1 part of copper chloride and 2 parts of copper sulfate, and put it at a temperature of 50 ° C , after fully precipitating, filtering and drying to obtain the selenium-copper master alloy.

Embodiment 2

[0028] (1) Add 2 parts of selenium with a purity of 99 to 99.999wt%, 0.5 part of potassium chloride, and 0.5 part of aluminum chloride into a reaction kettle with a stirrer and a thermometer, and the vacuum degree is 0.1MPa, and the reaction is carried out at a temperature of 300°C 0.5h. Obtain selenium compound;

[0029] (2) Add the above-mentioned selenide and water into the reaction kettle according to the solid-to-liquid ratio of 1:2 to 10 mass ratio, stir, mix and dissolve it, then add 1 part of copper sulfate and 1 part of copper oxide, at a temperature of 100 ° C, After fully precipitating, filter and dry to obtain a selenium-copper master alloy.

Embodiment 3

[0031] (1) Add 3 parts of selenium with a purity of 99 to 99.999wt%, 1.0 part of magnesium oxide, and 0.2 part of magnesium chloride into a reaction kettle with a stirrer and a thermometer. The vacuum degree is 0.08MPa, and the reaction is carried out at a temperature of 250°C for 0.8h. obtain selenium compounds;

[0032] (2) Add the above-mentioned selenide and water into the reaction kettle according to the solid-to-liquid ratio of 1:2-10 mass ratio, stir, mix, and dissolve it, then add 2.8 parts of copper nitrate, and make it fully precipitated at a temperature of 80°C , filtered, and dried to obtain a selenium-copper master alloy.

[0033] Table 1 Selenium-copper master alloy chemical composition analysis (wt%)

[0034] Example

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Abstract

The invention discloses a method for preparing a selenium-copper intermediate alloy, which is characterized by comprising the following steps of: (1) adding 1 to 3 mass parts of selenium with the purity of 99 to 99.999 weight percent and 0.5 to 1.2 mass parts of reducing agent into a reaction kettle with a stirrer and a thermometer, and reacting at the temperature of between 200 and 300 DEG C and the vacuum degree of 0.05 to 0.1MPa for 0.5 to 1 hour to obtain a selenium compound; and (2) adding the selenium compound and water in a solid-to-liquid mass ratio of 1:(2-10) into the reaction kettle, stirring and mixing for dissolving, adding 2 to 3 mass parts of precipitating agent, fully precipitating at the temperature of between 50 and 100 DEG C, filtering, and drying to obtain the selenium-copper intermediate alloy.

Description

technical field [0001] The invention relates to a preparation method of a selenium-copper master alloy, which belongs to the field of synthesis of metal materials. Background technique [0002] With the development of society and the advancement of science and technology, the machinery and equipment used in people's production and life are becoming more and more sophisticated, and their structures are becoming more and more complex, which puts forward higher requirements for the fineness of their shape processing. Although traditional metal materials such as copper and steel have good performance, there are many deficiencies in their processing performance, especially cutting performance. [0003] After the Second World War, with the wide application of tellurium, free-cutting copper alloys and steels began to appear. The free-cutting alloy materials represented by C14500 copper alloy have solved the problem of difficult processing of high-conductivity copper materials. How...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C9/00
Inventor 侯龙超侯仁义
Owner 四川中蓝基业新材料科技有限公司
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