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Potassium aurous cyanide production technology

A kind of technology of potassium aurous cyanide and production process, which is applied in the field of gold plating, can solve the problems of long production time, difficulty in gold recovery, and increased consumption of gold elements, so as to save raw materials and energy, realize no sewage discharge, and improve efficiency Effect

Pending Publication Date: 2019-03-26
泰州市欣港电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing production process of potassium aurous cyanide has the disadvantages of long production time, low yield, low product quality, h

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Potassium aurous cyanide production process comprises the following processes:

[0034] 1. Preparation of gold flakes: Roll an appropriate amount of gold raw materials into gold flakes with a thickness of 1mm, wash the gold flakes with detergent, and then rinse with 2% dilute sulfuric acid solution to dissolve the surface layer of the gold flakes, and then wash them with water net.

[0035] 2. Divide the washed gold flakes into several parts, and place them in the mother liquor tank outside the electrolytic cell with a titanium basket; use the gold flakes as the electrolytic anode during the electrolysis process; place a stainless steel barrel with a diameter of 100mm in the electrolytic cell The tank is used as the cathode, and an appropriate concentration of potassium cyanide solution is added as the anolyte. Among them, the amount of gold input into a single electrolytic mother liquor tank is 2.5kg, correspondingly adding 7.4kg of potassium cyanide solution, the mas...

Embodiment 2

[0042] Potassium aurous cyanide production process comprises the following processes:

[0043] 1. Preparation of gold flakes: Roll an appropriate amount of gold raw materials into gold flakes with a thickness of 1.2mm, wash the gold flakes with detergent, and then rinse them with 4% dilute sulfuric acid solution to dissolve the surface layer of the gold flakes, and then wash them with clean water wash.

[0044] 2. Divide the washed gold flakes into several parts, and place them in the mother liquor tank outside the electrolytic cell with a titanium basket; use the gold flakes as the electrolytic anode during the electrolysis process; place a stainless steel barrel with a diameter of 100mm in the electrolytic cell The tank is used as the cathode, and an appropriate concentration of potassium cyanide solution is added as the anolyte. Among them, the amount of gold put into a single electrolytic cell is 5kg, correspondingly adding 14.8kg of potassium cyanide solution, the mass c...

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Abstract

The invention relates to a potassium aurous cyanide production technology. The technology comprises the following steps that 1, an aurous sheet is prepared; 2, the aurous sheet is added to electrolysis equipment, and an editpotassium cyanide solution serves as anode liquor; 3, the electrolysis equipment is connected with a power source to carry out electrolysis; 4, after electrolysis operation isended, an electrolysis solution is cooled and crystallized; and 5, after crystallized products are treated, potassium aurous cyanide finished products are obtained. The efficiency of the potassium aurous cyanide production technology is effectively improved, the gold consumption rate is utilized fully, raw materials and energy sources are saved, the technology has the beneficial effect of recovering waste liquid gold, and no-sewage discharge is achieved.

Description

technical field [0001] The invention relates to the technical field of gold plating, in particular to a production process of potassium aurous cyanide. Background technique [0002] Gold plating is a surface processing technology widely used in various industrial production fields. Potassium aurous cyanide (KAu(CN) 2 ) is an important raw material used in the gold plating process, and is usually called "gold salt". [0003] Potassium aurous cyanide is generally produced by electrolysis. For example, Chinese patent document CN101624706 discloses a kind of preparation method of potassium aurous cyanide. The gold is rolled into a number of thin gold sheets, which are wound into groups and scattered on the bottom plate of the anode plate around the diaphragm tank. The thickness of each thin gold sheet is 0.1mm-0.2mm, the width is 2cm-4cm, and the length is 1cm-3cm. , thus increasing the surface area of ​​the gold flakes and speeding up the dissolution of the gold flakes; then...

Claims

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Application Information

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IPC IPC(8): C25B3/02C25B3/23
CPCC25B3/23
Inventor 唐立群翟华春顾海健刘龙坤
Owner 泰州市欣港电子材料有限公司
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