Separation and recycling method of waste tin-plated copper wire

Abstract

The present invention provides a separation and recycling method of a waste tin-plated copper wire. The method comprises the steps of: connecting with a set of sealed stirring devices; arranging a screen at the upper portion of the bottom portion of a container to divide the container into two cavities; arranging a stirring device in a cavity at the upper portion of the screen; arranging a water cooling device at the top portion of the container; adding the waste tin-plated copper wire and diesel oil into the container, allowing the diesel oil to enter the cavity at the lower portion of the screen, allowing the waste tin-plated copper wire to enter the cavity at the upper portion of the screen, heating the container, stirring the waste tin-plated copper wire in the container, continuouslyscraping the molten tin at the surface layer of the waste tin-plated copper wire, and allowing the scrapped tin and the diesel oil to flow into the bottom portion of the container through the screen under the drive action of the liquid-state diesel oil flowing downwards; and stopping heating and stirring, after the container is cooled to a room temperature, taking out the detinning copper wire anda little copper powder from the upper portion of the container, and taking out the diesel oil and tin bars from the lower portion of the screen of the container. The separation and recycling method of a waste tin-plated copper wire can achieve complete separation of copper and tin in one device.

Description

Technical field: [0001] The invention belongs to the field of recycling and utilization of secondary resources, and in particular relates to a method for separating and recycling waste tinned copper rice. technical background: [0002] 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. [0003] For most waste ti...

AI Technical Summary

Problems solved by technology

The applicant found that although this method can effectively strip the tin on the surface of the tinned copper rice, there is still a major problem in this method: heating and melting the tin on the surface of the copper rice in a vacuum state, and then peeling off the tin by grinding and stirring , and then cooled to below the melting point of tin and stirred to scrape off the tin. In this process, because of the surface tension of the molten tin, it is easy to adhere to the copper rice, resulting in the tin that falls off from the surface of the copper rice during the separation process and still adheres to the copper. On the rice, although most of the tin has fallen off, there is still a small amount of tin remaining on the surface of the copper rice through microscope observation, and the separation effect is not complete; in addition, this method needs to further separate tin and copper powder, and the processing cost is relatively high

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