Copper production methods can be divided into pyrometallurgy and hydrometallurgy.At present, 80% of world copper production is produced by pyrometallurgy and about 20% by hydrometallurgy.According to the composition of ore or concentrate, mineral composition, energy supply, control of environmental pollution, comprehensive utilization of raw materials and local water, electricity, transportation and materials, the appropriate production method shall be selected.

Hydrometallurgical copper smelting is a method that dissolves copper in copper ore, concentrate or calcine with solvent, and then further separates, enriches and extracts it.The objects of copper hydrometallurgical processing include copper oxide ore, low grade copper sulfide ore, tailings of concentrator, refractory composite ore and copper sulfide concentrate.According to the different properties of raw materials, different leaching methods are adopted. These methods mainly include: dilute sulfuric acid leaching of copper oxide, ammonia leaching of copper oxide, biological leaching of copper sulfide, roasting leaching of copper sulfide concentrate, etc.

The die is located at one end of the extrusion barrel of the extruder.The extruded metal is extruded from the die through the extrusion barrel through the extrusion rod at the opposite end of the die.Tube billets can be produced by hollow billets.Solid billet can also be produced by perforation and extrusion after two steps of operation.

Hot cross rolling perforation is another common method of producing tube billet, which is used to produce copper and copper alloy seamless tubes and large straight tube.Compared with the common metal forming method.Perforation is a more rapid molding process.