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A kind of processing technique of potassium stannate

A processing technology, technology of potassium stannate, applied in the direction of tin compounds, inorganic chemistry, chemical instruments and methods, etc., can solve the problems of limited and unsolvable output rate of potassium stannate, low purity of potassium stannate, etc., and achieve the goal of product Good quality, high purity, high performance effect

Active Publication Date: 2021-04-13
赣州白塔金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned patents cannot solve the problem of limited output rate of potassium stannate and low purity of potassium stannate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of processing technique of potassium stannate, its processing method comprises the following steps:

[0023] (1) Reaction preparation: Melt high-purity tin in a reactor and then chemically react with potassium hydroxide and an oxidant at a temperature of 350°C to obtain granular crude potassium stannate, react with high-purity tin, potassium hydroxide and an oxidant The material ratio is 1:2:1, and the preparation process of high-purity tin is as follows: ① melting: melting metal tin ingot at a high temperature of 620 ° C to form a molten state; ② one-stage granulation: passing molten metal tin water into the extruder In the extruder, the tin water in the molten state is extruded to form granules. When the tin water is extruded in the extruder, nitrogen is used for protection. The tin particles are cooled and shaped in the cold water tank. The cold water in the cold water tank is cooled by normal temperature flowing water. The tin particles are cooled and shaped,...

Embodiment 2

[0030] A kind of processing technique of potassium stannate, its processing method comprises the following steps:

[0031](1) Reaction preparation: Melt high-purity tin in a reactor and then chemically react with potassium hydroxide and an oxidant at a temperature of 480°C to obtain granular crude potassium stannate, react with high-purity tin, potassium hydroxide and an oxidant The material ratio is 1:2:1, and the preparation process of high-purity tin is as follows: ① melting: melting metal tin ingot at a high temperature of 620 ° C to form a molten state; ② one-stage granulation: passing molten metal tin water into the extruder In the extruder, the tin water in the molten state is extruded to form granules. When the tin water is extruded in the extruder, nitrogen is used for protection. The tin particles are cooled and shaped in the cold water tank. The cold water in the cold water tank is cooled by normal temperature flowing water. The tin particles are cooled and shaped, ...

Embodiment 3

[0038] A kind of processing technique of potassium stannate, its processing method comprises the following steps:

[0039] (1) Reaction preparation: Melt high-purity tin in a reactor and then chemically react with potassium hydroxide and an oxidant at a temperature of 550°C to obtain granular crude potassium stannate, react with high-purity tin, potassium hydroxide and an oxidant The material ratio is 1:2:1, and the preparation process of high-purity tin is as follows: ① melting: melting metal tin ingot at a high temperature of 620 ° C to form a molten state; ② one-stage granulation: passing molten metal tin water into the extruder In the extruder, the tin water in the molten state is extruded to form granules. When the tin water is extruded in the extruder, nitrogen is used for protection. The tin particles are cooled and shaped in the cold water tank. The cold water in the cold water tank is cooled by normal temperature flowing water. The tin particles are cooled and shaped,...

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PUM

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Abstract

The invention discloses a processing technology of potassium stannate. The process includes reaction preparation-dehydration treatment-pickling-high purification-finished product treatment. This process makes the potassium stannate The purity of the product is higher and the quality of the product is better.

Description

technical field [0001] The invention relates to the field of chemical production, in particular to a processing technology of potassium stannate. Background technique [0002] Potassium stannate is mainly used in the electroplating industry to replace silver with tin and nickel with tin-copper alloy. At present, the process for producing potassium stannate generally has the problems of limited output rate and low purity of potassium stannate. [0003] Patent Publication No. CN200910047621.4 The present invention discloses a method for directly producing potassium stannate by utilizing tin raw materials, which includes the following steps: (1) mixing tin and tin alloy with potassium hydroxide and an oxidizing agent in a reactor at 300°C to A chemical reaction is carried out at a temperature of 600°C to obtain granular crude potassium stannate; the reaction process is to gradually add potassium hydroxide and an oxidant to molten tin and tin alloy until the reaction is complet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/00
CPCC01G19/00C01P2006/80
Inventor 肖祖海
Owner 赣州白塔金属材料有限公司
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