Oxygen bottom blowing smelting for copper is a totally new metallurgical technology, which was set up in China and put into operation in 2008. This new technology is different from top blowing and side blowing which were popular in 70’s last century. Production practice demonstrate that the new process is characterized by having a good condition and high thermal efficiency for heat transfer, and its heat transfer rate is about 1.7 times that of Noranda process. In the furnace, therefore, raw feed molten is fast, smelting intensity is high. Under very strong continuously stirring in the bath, gas-liquid-solid there phases formed are of higher heat transfer index by convection.

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