Views: 7 Author: KLAY Publish Time: 2020-12-15 Origin: Site
This article explains the basic classification of copper scrap, as well as high-efficiency copper scrap wire recycling equipment that is widely used at home and abroad.
Scrap copper mainly comes from three places:
(1). Waste and waste produced in the copper smelting process;
(2). Waste produced in the process of various mechanical processing and copper in waste;
(3). Old and scrapped instruments in use. Copper in instruments, tools and machinery and equipment.
China's domestic waste and miscellaneous copper has not yet formulated a relatively complete classification standard. Basically, with reference to foreign standards, the waste and miscellaneous copper is roughly divided into three categories:
According to the different stages of its generation, copper scrap can be divided into three types: primary copper scrap generated during industrial production, new copper scrap generated during processing, and old copper scrap generated after consumer use.
1# Scrap copper: The purity is above 95-99%, mainly composed of clean non-alloy copper materials, namely: copper scraps, copper rings, clean copper pipes or pipes, copper wires and thick wires (not including burnt Coke and fragile thin copper wire), this kind of waste can be sent directly to the processing plant for use. Copper wire stripping machine and cable crushing granulator machine are widely used for recovering such waste.
2#Scrap copper: Copper containing more than 85%, including clean, oxidized, and skinned copper scraps, copper rings, rectifier parts, and relatively clean copper pipes with a small amount of solder, oxidized or skinned copper wires ( Not a scorched copper wire).
3# Scrap copper: In addition to the above 1#.2# waste copper composition, it also contains a large number of copper castings, waste bearings, waste motors, various electrical equipment, waste transformers, and so on. The copper content of 3# scrap copper varies widely, with the lowest copper content reaching 20% and the highest reaching 70-80%.
Primary copper scrap: such as substandard anodes, cathodes and blanks, anode scraps. These scraps cannot be further processed or sold. They are usually returned to the previous process. Substandard copper is usually returned to the converter or anode furnace for electrolytic refining, and defective billets are remelted and recast. The finished product (pure copper and plastic granules after separated by cable granulator belongs to primary copper scrap.
New copper scrap: New copper scrap refers to new scrap or copper scrap generated inside the factory. This kind of copper scrap is produced during processing. The main difference between it and primary copper scrap is that it may have been doped during alloying or covering.
Old scrap copper: Old scrap copper refers to waste, used or (manufacturing enterprise) external copper scrap. It comes from a product that has reached its end of life.
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