1,Classified according to the existence of form in nature
Copper sulfide ore natural copper —- copper elements in nature naturally generated by a variety of sheet, plate, block aggregate, intact crystals rare. The copper content is more than 99%, the value is much higher than the copper extracted through smelting, but the reserves are very small.
Copper oxide ores —- are few.
Copper sulfide ore —- contains very low copper content, generally around 2-3%, more than 80% of the world’s copper is refined from copper sulfide ore.
2,Classified according to the production process
Copper concentrate —- smelting before the selection of the ore with high copper content.
Crude copper —— products after smelting of copper concentrates with a copper content of 95-98%.
Pure copper —— copper with a content of 99% or more after fire-refining or electrolysis. Often called purple copper, it has good electrical and thermal conductivity and corrosion resistance. Pure copper is denoted by the letter + T (copper), such as Tl, T2, T3, etc.. Oxygen content is very low, not more than 0. 01% of pure copper is called oxygen-free copper, with TU (copper-free), such as TU1, TU2, etc..
3, according to the main alloy composition classification
Brass —– copper and zinc alloy, with zinc as the main alloying element of copper alloy called brass. Brass with +H; (yellow) said such as H80, H70, H68, etc..
Bronze —– in addition to copper and zinc-nickel alloys, mainly tin bronze, aluminum bronze and special bronze. Bronze with “Q” (green) said.
White copper —– copper-cobalt-nickel alloy.
Copper —– pure copper is purple-red metal, often called “purple copper”, but copper is not necessarily pure copper, sometimes also refers to the addition of a small amount of deoxidation elements or other elements of copper. According to the composition can be divided into: ordinary copper (T1, T2, T3, T4), oxygen-free copper (TU1, TU2 and high purity, vacuum oxygen-free copper), deoxidized copper (TUP, TUMn), add a small amount of alloying elements of special copper (copper arsenic, tellurium copper, silver copper) four categories.
4, according to the product form classification
Copper tube, copper bar, copper wire, copper plate, copper strip, copper bar, copper foil and so on.
