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A process for recovering copper and nickel from copper-nickel alloy

A copper-nickel alloy and copper recovery technology, which is applied in the field of comprehensive utilization of resources, can solve the problems of complex, cumbersome, and a large amount of high-salt wastewater, and achieves the effects of simple process, high metal yield and low production cost.

Active Publication Date: 2017-10-31
池州西恩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

This process also has complex and cumbersome problems and a large amount of high-salt wastewater

Method used

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  • A process for recovering copper and nickel from copper-nickel alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 Shown, a kind of technique that reclaims copper, nickel from copper-nickel alloy, its concrete steps are as follows:

[0041] (1) Oxidation and iron removal: raise the temperature of the copper-nickel alloy to 1300°C to obtain molten copper-nickel metal liquid, add slagging agent and spray it into the air, keep the reaction at this temperature for 30 minutes, and remove the upper iron-containing waste slag to obtain iron removal The copper-nickel metal liquid; the copper-nickel alloy includes the following components in mass percentage: 0.5% iron, 95% copper, 3% nickel, and 1% other. The slagging agent is quartz sand, and the addition is 1.5% of the iron mass in the copper-nickel alloy times, the pressure of injected air is 0.02MPa;

[0042] (2) Electrolytic copper: the copper-nickel metal solution obtained in step (1) after iron removal is cast into a soluble anode plate, the soluble anode plate is used as the anode, the stainless steel plate is used ...

Embodiment 2

[0046] Such as figure 1 Shown, a kind of technique that recovers copper, nickel from copper-nickel metal, its concrete steps are as follows:

[0047](1) Oxidation and iron removal: raise the temperature of the copper-nickel alloy to 1700°C to obtain molten copper-nickel metal liquid, add slagging agent and spray it into the air, keep the temperature at this temperature for 180 minutes, remove the upper iron-containing waste slag and obtain the iron-removing product copper-nickel metal liquid; the copper-nickel alloy includes the following components in mass percentage: 50% iron, 30% copper, 40% nickel, the slagging agent is quartz sand, and the addition amount is 0.4 times of the iron mass in the copper-nickel alloy, sprayed into The air pressure is 0.6MPa;

[0048] (2) Electrolytic copper: the copper-nickel metal solution obtained in step (1) after iron removal is cast into a soluble anode plate, the soluble anode plate is used as the anode, the stainless steel plate is used...

Embodiment 3

[0052] Such as figure 1 Shown, a kind of technique that recovers copper, nickel from copper-nickel metal, its concrete steps are as follows:

[0053] (1) Oxidation and iron removal: raise the temperature of the copper-nickel alloy to 1450°C to obtain molten copper-nickel metal liquid, add slagging agent and spray it into the air, keep the reaction at this temperature for 70 minutes, and remove the iron-containing waste slag on the upper part to obtain iron removal copper-nickel metal liquid; the copper-nickel alloy comprises the following components in mass percentage: 12% iron, 78% copper, 10% nickel, the slagging agent is quartz sand, and the addition amount is 0.9 times of the iron mass in the copper-nickel alloy, sprayed into The pressure of the air is 0.2 MPa.

[0054] (2) Electrolytic copper: the copper-nickel metal solution obtained in step (1) after iron removal is cast into a soluble anode plate, the soluble anode plate is used as the anode, the stainless steel plate...

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Abstract

The invention relates to a process for recycling copper and nickel from copper-nickel alloy. The process comprises the following steps: (1) iron removal through oxidization: heating the copper-nickel alloy to obtain a molten copper-nickel-cobalt metal liquid, adding a slag former and air to slag, and clearing iron-containing waste residue at the upper part, so as to obtain an iron-removed copper-nickel metal liquid; (2) electrolysis of copper: casting the iron-removed copper-nickel metal liquid obtained in the step (1) into a soluble positive plate, and carrying out electrolysis by taking the soluble positive plate as an anode, a stainless steel plate as a cathode and copper sulfate as electrolyte, so as to obtain copper on the cathode; and (3) rough production of nickel sulfate: evaporating, concentrating and crystallizing electrolyte obtained in the step (2), and carrying out centrifugation to obtain rough nickel sulfate. The process has the beneficial effects of simplicity, environmental friendliness, high metal yield, low production cost and remarkable production benefit.

Description

technical field [0001] The invention relates to a process for recovering copper and nickel from a copper-nickel alloy, belonging to the technical field of comprehensive utilization of resources. Background technique [0002] With the development of the economy, our demand for copper and nickel is gradually increasing, but the resources of copper and nickel are decreasing year by year, and they are bound to be exhausted. In order to alleviate the pressure of insufficient resources, more and more attention will be paid to the comprehensive utilization of secondary resources. [0003] In non-ferrous smelting, copper and nickel are often mixed together. In industry, copper, nickel and other metals are generally separated by fire or wet process, and the metals are further purified. These processes generally have problems such as high production cost, long process flow, large environmental pollution, and low yield. [0004] Patent application number 201310455464.7 provides "a me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C1/12C25C7/06C22C1/06C22C9/06C22B23/00
CPCY02P10/20
Inventor 赵志安易飞鸿
Owner 池州西恩新材料科技有限公司