Recycling method of scrap tinned copper rice

A treatment method, tin-plated copper technology, applied in the direction of electronic waste recycling, recycling technology, electrical components, etc., can solve the problems of high energy consumption and batch recycling, and achieve the effect of low cost, high-efficiency separation, and simple installation

Active Publication Date: 2017-05-17
CHONGQING LONGJIAN METAL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The applicant found that the method of physical separation after heating has high energy consumption and has certain limitations in batch recovery. The present inv

Method used

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  • Recycling method of scrap tinned copper rice

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put 2kg of steel balls with a diameter of 20mm, 1kg of waste tin-plated copper rice with a wire diameter of 2-4mm and a length of 5-12mm, and 0.1kg of silicone oil into a vertical stirring ball mill, and process it at a speed of 300r / min for 30min; then ball mill Filter the product to obtain medium oil and solid product; sieve the solid product to obtain tin-copper mixed powder and copper rice after de-tinning; then put the tin-copper mixed powder into a container with a stirring device, add silicone oil, and put it in the container The silicone oil liquid level is 5cm higher than the accumulation height of the tin-copper metal powder in the container, then heat the container to 240°C, start the stirring device to stir for 3 minutes, stop heating and stirring, and filter the product in the container after the medium oil is cooled. Obtain silicone oil, copper powder, and tin block.

[0029] Technical effect: The tin plating layer on the surface of the waste tin-plated co...

Embodiment 2

[0031] Add 2kg of steel balls with a diameter of 20mm, 1kg of waste tinned copper rice with a wire diameter of 2-4mm and a length of 5-12mm, and 0.1kg of kerosene into a vertical stirring ball mill, and process it at a speed of 300r / min for 20min; then ball mill The product is filtered to obtain kerosene and solid products; the solid products are sieved to obtain tin-copper mixed powder and copper rice after detinning; then put the tin-copper mixed powder into a container with a stirring device, add kerosene, and the The kerosene liquid level is 5cm higher than the accumulation height of the tin-copper metal powder in the container, then the container is heated to 240°C, the stirring device is started to stir for 2 minutes, the heating and stirring are stopped, and the product in the container is filtered after the medium oil is cooled to obtain Kerosene, copper powder, tin block.

[0032] Technical effect: The tin plating layer on the surface of the waste tin-plated copper ri...

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Abstract

The invention provides a recycling method of scrap tinned copper rice. First, adding a steel ball, waste tinned copper rice, and medium oil into a vertical mixing ball mill in accordance with a certain percentage, wherein the tin and a small amount of copper on the surface of the scrap tinned copper rice are scraped off under a physical friction of the steel ball, and thus a ball mill product is obtained; after filtration and screening, tin-copper mixed powder and tin with removal of copper are got; finally, the tin-copper mixed powder is placed in a vessel with a stirrer, and the medium oil was heated and stirred to separate the tin. The method stripes the tin on the surface of the copper rice by pure physical stripping to realize an efficient separation of a tin plating layer and scrap-copper rice. The invention has the advantages of being simple in method and device, non-pollution for environment, low in cost, and high in efficiency.

Description

[0001] Technical field: [0002] The invention belongs to the field of recycling and utilization of secondary resources, and in particular relates to a method for recycling waste tinned copper rice. [0003] technical background: [0004] With the rapid development of the electric power communication industry, the demand for wires and cables is increasing day by day, and the waste wires and cables are also increasing day by day. In addition, metal resources are increasingly scarce, and the international copper and tin prices remain high. The recycling of waste wires and cables has a great impact on Both economically and socially important. Because the traditional conductor copper wire will be partially oxidized when it is extruded at high temperature, and it is prone to poor contact when the wire is connected. Therefore, the existing copper wire is generally tin-plated on the surface to make it have good corrosion resistance and welding performance. [0005] Tinned copper ric...

Claims

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Application Information

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IPC IPC(8): H01B15/00
CPCH01B15/00Y02W30/82
Inventor 易师张柏林周艳
Owner CHONGQING LONGJIAN METAL MFG
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