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Scrap copper recycling classification and process

Views:0     Author:KLAY     Publish Time: 2020-12-15      Origin:Site

There are two main types of copper resources that can be used for recycling:


The first one we call it new resources, which mainly refers to the "waste" comes from the industrial production. This kind of "waste" is mostly leftovers and machined turning scraps.If they are strictly managed, the grades and code of copper and alloys can be distinguished, and they can be recycled directly by the copper processing plants as raw material. For example , about 30-40% of the copper and copper alloy processing materials consumed are leftovers. In actual production, it is also called the utilization rate of copper processing materials. The leftovers in various electrical component factories are very popular because they are mostly pure copper semi-finished products produced by mechanical processing. For recovering this copper waste, users like to equip scrap metal baler for making metal bundles and resell to big mills.


The second type of copper recycling resources is called old resources, which are copper products among various industrial products, equipment and spare parts. The source of this is very complicated, and the life cycles of various industrial products are very different. Among them, the recycled copper can only be obtained after dismantling industrial products, and it is often a mixture of various copper alloys. For example, in automobile heat dissipation, the water tank tube is made of H90 brass, the heat sink is made of T2 wave strip, and the water tank is welded together with lead-tin solder, and the water tank is made of H68 alloy. The important second type of recycling resources are: electronic components, car water tanks, air conditioners, waste copper conductors (wires, cables, conductive copper bars) etc. According to the data of International Copper Association, the actual copper recovery rate is 85%, and the rest will participate in the material cycle of nature. There are many types of recycled copper resources and different recycling methods, but the basic procedures are: inspection and acceptance of recycled copper raw materials—determining the proportion of deductions—sampling and analyzing components—pretreatment of recycled materials—into the furnace for smelting (crucible Boiler, induction furnace)-casting (castings, pressure-processed billets, copper rods, blister copper blocks, remelted alloy ingots, etc.)


Among these waste, most common is scrap wires recycling. That's why the selling of scrap wire recycling machine getting more and more. Meanwhile, machine manufacturing process is getting better.

 

Typical copper recycling processes are as follows:


1. Purple miscellaneous copper (bare copper wire)---Pretreatment (selection, drying, bundling, packing)---Reverberatory furnace smelting (20-100 tons/furnace) oxidation and reduction---Intermediate holding furnace---Continuous casting and rolling copper bright rod (copper content ≥98.0%, conductivity ≥98%IACS)

2. Scrap Brass → pretreatment (selection, bundling, packing) → induction melting (3-6 tons /furnace) → holding furnace (6 tons) → multi-line horizontal continuous casting bar stock → lead brass easy Cutting bar (HPB58-2, for lock making)

3. Automobile water tank air conditioner radiator → disassemble, remove the shell → bake, partially remove the lead-tin solder → crucible boiler melting, slag removal → iron mold casting → brass ingot → analysis of chemical composition → for the production of cast brass parts and bearing , Valves, sanitary ware, etc.

4. Copper granules from scrap wires → directly used as copper smelting ingredient. To prevent the copper powder from floating on the surface of the copper liquid, it can be packed with copper skin and pressed into the copper liquid;

5. Copper shavings, brass shavings → bundles making → induction melting → obtain remelted copper ingots → smelt the corresponding alloy

6. With the development of recycled copper industrialization and recycling technology, recycled copper production has developed in the direction of mechanization, continuity, and automation. Developed countries have already used specialized recycling line for recycling copper waste, such as home appliances, electronic components, and radiators. 


Cable granulator, stripping machine, double shaft shredder and baling machine are the most popular machines applied in this recycling business. KLAY as the most popular and reputable manufacturer, we are glad to provide you best solution for your scrap recycling business.

 


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