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Regeneration treatment method for waste tinned copper pellets

A treatment method and tin-coated copper technology are applied in the field of regeneration treatment of waste tin-coated copper rice, which can solve the problems of large consumption of chemical reagents, secondary pollution costs, incomplete recovery of copper and tin resources, etc., and achieve complete separation of tin, The effect of efficient regeneration treatment, avoiding high cost and environmental pollution problems

Inactive Publication Date: 2018-05-18
CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The chemical process involved will inevitably consume a large amount of chemical reagents, and there are problems such as secondary pollution and high cost, and the recovery of copper and tin resources is not complete

Method used

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  • Regeneration treatment method for waste tinned copper pellets
  • Regeneration treatment method for waste tinned copper pellets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Take 2kg of waste tin-plated copper rice with a wire diameter of 2-4mm and a length of 5-12mm, add the waste tin-plated copper rice to the screw feeder under vacuum conditions, heat the screw feeder, and maintain the temperature in the screw feeder Control at 165°C, system pressure 25kpa; use a screw feeder to slowly feed the waste tinned copper rice into the collector, and the tin coating on the surface of the waste tinned copper rice is heated, squeezed and scraped by the screw feeder It is separated from the copper rice in powder form, and a small amount of copper on the surface of the waste tinned copper rice is separated from the copper rice in powder form under the mechanical scraping action of the screw feeder; under the action of the screw feeder, the copper rice and the separated The tin powder and copper powder enter the collector together; collect the mixture of detinned copper rice, tin powder and copper powder from the collector, and use a sieve with a mesh s...

Embodiment 2

[0041] Take 2kg of waste tin-plated copper rice with a wire diameter of 2-4mm and a length of 5-12mm, add the waste tin-plated copper rice to the screw feeder under vacuum conditions, heat the screw feeder, and maintain the temperature in the screw feeder Control at 230°C, system pressure 25kpa; use a screw feeder to slowly feed the waste tinned copper rice into the collector, and the tin coating on the surface of the waste tinned copper rice is heated, squeezed and scraped by the screw feeder It is separated from the copper rice in powder form, and a small amount of copper on the surface of the waste tinned copper rice is separated from the copper rice in powder form under the mechanical scraping action of the screw feeder; under the action of the screw feeder, the copper rice and the separated The tin powder and copper powder enter the collector together; collect the mixture of detinned copper rice, tin powder and copper powder from the collector, and use a sieve with a mesh ...

Embodiment 3

[0046] Take 2kg of waste tin-plated copper rice with a wire diameter of 2-4mm and a length of 5-12mm, add the waste tin-plated copper rice to the screw feeder under vacuum conditions, heat the screw feeder, and maintain the temperature in the screw feeder Control at 190°C, system pressure 25kpa; use a screw feeder to slowly feed the waste tinned copper rice into the collector, and the tin coating on the surface of the waste tinned copper rice is heated, squeezed and scraped by the screw feeder It is separated from the copper rice in powder form, and a small amount of copper on the surface of the waste tinned copper rice is separated from the copper rice in powder form under the mechanical scraping action of the screw feeder; under the action of the screw feeder, the copper rice and the separated The tin powder and copper powder enter the collector together; collect the mixture of detinned copper rice, tin powder and copper powder from the collector, and use a sieve with a mesh ...

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Abstract

The invention provides a regeneration treatment method for waste tinned copper pellets. The regeneration treatment method for the waste tinned copper pellets comprises the steps that the waste tinnedcopper pellets are added into a spiral feeder under a vacuum condition at first, the spiral feeder is heated, and the temperature in the spiral feeder is maintained and controlled to be 165-230 DEG C;then the waste tinned copper pellets are slowly fed into a collector by the spiral feeder, tin coatings and a small amount of copper on the surfaces of the waste tinned copper pellets are separated from the copper pellets to be powdery, and after being detinned, the copper pellets enter the collector together with the tin powder and copper powder separated from the copper pellets; the detinned copper pellets and copper-tin mixed powder are obtained in a screening mode; and then the copper-tin mixed powder is heated in an oil bath and screened for filtering, and copper powder and tin particlesare obtained in a separation mode. According to the regeneration treatment method for the waste tinned copper pellets, efficient mechanical separation of tin is achieved under the vacuum condition through the characteristic that tin cannot stand heat, the whole process is free of participation of any chemical reagent or chemical process, devices applied are simple, operation is convenient, and industrial application can be achieved.

Description

Technical field: [0001] The invention belongs to the field of recycling and utilization of secondary resources, and in particular relates to a regeneration treatment method of waste tinned copper rice. technical background: [0002] Tin is a rare and precious metal. The recovery of tin from waste tinned copper wires not only protects and saves tin resources, but also improves the utilization value of copper wires, while reducing energy consumption and environmental burden, which has good social and economic benefits. In 2006, my country's market demand for tinned copper wire was nearly 150,000 tons. There are more than 200 hot-dip tinning production lines in China, with a production capacity of more than 200,000 tons per year. 200,000 tons. [0003] In recent years, industries such as electronics and communications, automobiles, wires and cables have developed and produced copper cathodes. This process failed to achieve rapidity due to a large amount of tin entering the sla...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B15/00C22B25/06
CPCC22B7/00C22B7/004C22B15/00C22B25/06Y02P10/20
Inventor 张柏林周艳
Owner CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD