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Treatment method of waste copper cuttings

A processing method and technology for copper scraps, which are applied in the field of machining, can solve the problems of poor plastic workability, reduced melt quality of copper and copper alloys, and low ingot density, so as to improve processing performance, improve metal recovery, increase quality effect

Inactive Publication Date: 2012-08-15
JINCHUAN GROUP LIMITED
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The oil in the sawdust is decomposed by heat, and the water vapor produced will oxidize and absorb the copper liquid, resulting in a decrease in the quality of the copper and copper alloy melt, low ingot density, and poor plasticity.

Method used

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  • Treatment method of waste copper cuttings
  • Treatment method of waste copper cuttings
  • Treatment method of waste copper cuttings

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Embodiment Construction

[0013] The first step of the method for processing waste copper scraps of the present invention is to make oily, scattered and loose copper scraps into dense blocks; the second step is to heat the oily scrap cakes to 700-850°C to make the The oil stain undergoes a cracking reaction and is discharged. Finally, the pyrolysis products can be burned and purified to achieve standard discharge.

[0014] Pressed lump copper shavings may be chip cakes, see Figure 1-Figure 5 , The cake making process includes: putting copper scraps 8 into the cake mold 4 of the cake maker, hydraulic station 7 drives the cake making pressure head 3 to move downwards, and presses the copper scraps into scrap cakes. Push out the oil cylinder 6 to move to the left to pull out the pad iron 5 at the bottom of the cake, and the cake making pressure head 3 presses down the crumb cake 9; the pad iron 5 resets and pushes out the crumb cake 9. Complete a cake making cycle.

[0015] see Image 6 , The deoiling...

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Abstract

The invention discloses a treatment method of waste copper cuttings, which comprises the following steps: (1) pressing the waste copper cuttings into a block; (2) heating the copper cutting block in the step (1) to 700-850 DEG C to remove oil; and finally, carrying out purifying treatment on the oil stain cracked product generated in the oil removal process in the step (2). According to the treatment method of waste copper cuttings, the cutting fluid in the copper cuttings can be removed thoroughly by pyrolysis; and when the cutting cake subjected to oil removal directly returns to the furnace, the cutting cake is immerged in the copper liquid and molten, thereby greatly reducing the burning loss of the copper cuttings and enhancing the metal recovery rate. The invention can prevent the oil stain in the copper cuttings from polluting the copper liquid, enhance the metal melt quality, improve the processability of metal, and increase the processing yield. The cracked oil smoke is subjected to combustion, static electricity collection and filtration treatment, and the concentration of the finally emitted smoke is lower than 2mg / m<3>.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a method for processing waste copper shavings. Background technique [0002] In the production process of copper and copper alloy pipes, rods, shapes, wires, plates, strips and foils, a large amount of oily waste is produced. Taking the production of copper and copper alloy pipes and bars as an example, the general comprehensive yield rate is about 63%. For every 10,000 tons of finished products produced, 15,873 tons of melting and casting raw materials are needed. After ingot cutting, extrusion, rolling, and stretching During the sawing process of products, copper shavings will be generated. Taking the melting and casting Ф310mm ingot as an example, the yield rate of the melting and casting process is about 89%. Sawing 9 short ingots, considering the factors of cutting head and tail, one ingot will produce 10 incisions, the width of each ingot is 16mm, and the am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B15/00
CPCY02P10/20
Inventor 贺永东杨志强
Owner JINCHUAN GROUP LIMITED
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