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Refinement and purification method of beryllium copper waste residues

A technology of refining, purification and waste slag, which is applied in the metallurgy field of metal materials, can solve the problems of recovery and treatment, high recovery value, and low yield, and achieve the effects of low production cost, uniform beryllium content, and simple method and process

Active Publication Date: 2020-10-23
宁夏中色新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The carbon reduction method is only suitable for the production and preparation of beryllium-copper master alloys. The melting and casting method is more common in the production of beryllium-copper alloys for forging and strips. However, this method will produce a large amount of waste slag during the melting process, and the beryllium content is 0.5-1.8 %, the recovery value is high and the difficulty is high. The same industry has tried various recovery and purification methods, but all have little effect. Therefore, the recovery and treatment of beryllium copper waste slag has always been a difficult problem in the copper alloy processing industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Weigh 15kg of beryllium-copper alloy old material (Be content 1.8%), 37.4kg of ESR slag and 124.6kg of beryllium copper waste slag (Be content 0.78%), and a total of 177kg of charge; the ESR waste slag is broken into an average particle size of 20mm Granular ESR waste. Beryllium copper waste slag needs to be pretreated by manual picking and magnetic separation before use.

[0035] 2. Dry the beryllium-copper alloy waste, ESR waste and beryllium-copper waste for 6 hours at a temperature of 180°C.

[0036] 3. Put the dried beryllium-copper alloy waste and ESR waste residue into the graphite crucible of the vacuum induction furnace in turn, and then send power to raise the temperature. The power control method is: 50KW (30min) → 80KW (20min) → 100KW (15min) →150KW (20min)→180KW (continuous heat preservation). After the waste beryllium-copper alloy waste and ESR slag are completely melted, add the beryllium-copper waste slag slowly until the addition is complete, and u...

Embodiment 2

[0042] 1. Weigh 22kg of beryllium-copper alloy old material (Be content 1.8%), ESR waste residue 54kg and beryllium copper waste residue (Be content 0.78%) 108kg, furnace charge is 184kg in total, slagging agent calcium fluoride 9.2kg; and ESR waste residue is broken Granular ESR waste with an average particle size of 10mm. Beryllium copper waste slag needs to be pretreated by manual picking and magnetic separation before use.

[0043] 2. Dry beryllium-copper alloy waste, ESR waste, beryllium-copper waste and slagging agent calcium fluoride for 8 hours at a temperature of 300°C.

[0044] 3. Put the dried beryllium-copper alloy waste and ESR waste residue into the graphite crucible of the vacuum induction furnace in turn, and then send power to raise the temperature. The power control method is: 50KW (30min) → 80KW (20min) → 100KW (15min) →150KW (20min)→180KW (continuous heat preservation). After the waste beryllium-copper alloy waste and ESR slag are completely melted, slowl...

Embodiment 3

[0050] 1, take by weighing beryllium-copper alloy old material (Be content 1.8%) 18kg, ESR waste residue 46kg and beryllium copper waste residue (Be content 0.78%) 116kg, charge adds up to 180kg, slagging agent calcium fluoride 8kg; And ESR waste residue is broken into Granular ESR waste with an average particle size of 5mm. Beryllium copper waste slag needs to be pretreated by manual picking and magnetic separation before use.

[0051] 2. Dry beryllium-copper alloy waste, ESR waste, beryllium-copper waste and slagging agent calcium fluoride for 10 hours at a temperature of 200°C.

[0052]3. Put the dried beryllium-copper alloy waste and ESR waste residue into the graphite crucible of the vacuum induction furnace in turn, and then send power to raise the temperature. The power control method is: 50KW (30min) → 80KW (20min) → 100KW (15min) →150KW (20min)→180KW (continuous heat preservation). After the waste beryllium-copper alloy waste and ESR slag are completely melted, slow...

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PUM

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Abstract

The invention discloses a refinement and purification method of beryllium copper waste residues. The refinement and purification method comprises the following steps that firstly, beryllium copper alloy waste, ESR waste residues and beryllium copper waste residues are subjected to drying treatment at the temperature ranging from 180 DEG C to 300 DEG C; secondly, after the beryllium copper alloy waste, ESR waste residues and beryllium copper waste residues obtained after drying treatment are sequentially added into a vacuum induction furnace and a graphite crucible, gradient warming melting andstirring are carried out at the same time, and molten metal is obtained; and thirdly, the molten metal is warmed to the temperature ranging from 1,300 DEG C to 1,500 DEG C in the vacuum induction furnace, refinement is carried out for 0.5 h to 1.5 h, and after standing is carried out for 10 min to 20 min, casting is carried out. A shoe-shaped gold ingot prepared through the method is uniform in beryllium content and low in impurity content, and the shoe-shaped gold ingot can serve as an intermediate alloy to meet smelting and casting of various kinds of high-beryllium and low-beryllium cooperalloys.

Description

technical field [0001] The invention belongs to the technical field of metal material metallurgy, and in particular relates to a method for refining and purifying beryllium copper waste slag. Background technique [0002] Beryllium copper alloy has good comprehensive properties, its mechanical properties, namely strength, hardness, wear resistance and fatigue resistance rank first among copper alloys, and its electrical conductivity, thermal conductivity, non-magnetic and anti-spark properties cannot be compared with other copper materials , known as the "King of Elasticity" in copper alloys. Therefore, as an excellent fatigue-resistant and highly elastic conductive material, it is widely used in electronics, telecommunications, computers, mobile phones and precision instruments, as well as military industries such as aviation, aerospace, weapons, etc. It is a strategic material for the development of science and technology and the modernization of national defense. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B7/04C22B15/00C22B35/00
CPCC22B7/001C22B7/04C22B15/0056C22B15/0054C22B35/00Y02P10/20
Inventor 葛大明张金山赵红运韩俊刚杨小东赵晓巍臧松海潘建立任海强刘伟锋徐瑞巩津畅丁亚东
Owner 宁夏中色新材料有限公司