At present our production of renewable methods of copper there are two categories: the first is the direct melting of scrap
into various grades of copper alloy or refined copper, it is also called the direct use of law; second is to Copper by the
first method by fire processing cast copper anode. And then into the electrolytic copper and electrolytic refining process in
the electrolytic recovery of other valuable elements. Second approach using copper scrap, usually there are three kinds of
different processes, namely, a method, two stage method and the three-stage method.
l section of law
The classification over the yellow recycled copper or recycled copper added directly into the anode copper refining
reflection method. The advantage is that process short, simple equipment, plant fast, low investment, but the method of
recycled copper in dealing with complex components, the output of smoke and dust components are complex, difficult to handle;
At the same time refining furnace operation duration, labor-intensive, low productivity, and lower metal recovery.
2 Erduan method
Copper by first obtained by the blast furnace copper smelting reduction. And then furnace refining of copper into anode
copper reflection; or recycled copper first by Converting to Make blister. Then refined into a furnace in the reflection
anode copper. Since these two methods to go through the two processes, so called Erduan law. Blast Furnace received a higher
copper impurities, was black, so called black copper.
3 three-stage method
Copper by the first blast furnace by the reduction smelting of copper into the black, black and copper in blister copper
converter blowing Tempered times, times of blister copper refining furnace and then in the reflection into anode copper. Raw
material processing to go through three processes to produce qualified anode copper, so called three-stage method. Three-
stage method has better utilization of raw materials, output of the smoke composition is simple, easy to handle, blister
grade higher refining furnace operation easier, equipment and higher productivity advantages, but there are more complex
processes, equipment and more investment and and fuel consumption advantages of more. Therefore, China addition to regulation
membrane large enterprises or special waste to be addressed, the
General processing of scrap copper and a multi-method method uses two stages.