| 摘要 |
PROBLEM TO BE SOLVED: To provide an anode refining method for a high-sulfur blister copper containing much sulfur, which is efficient and has little possibility of environmental pollution. SOLUTION: The anode refining method includes the steps of: passing a crude copper solution which has been produced in a flash converter and contains much sulfur, into an anode furnace 2 via a chute 1; and removing 90 wt.% or more of the sulfur content in the crude copper solution, by continuously passing an inert gas into the anode furnace 2, boiling the copper solution in the anode furnace 2, reacting the sulfur content in the copper solution, with oxygen in the copper solution and oxygen absorbed from the atmosphere through the surface of the copper solution to produce SO<SB>2</SB>gas, and discharging the gas from the copper solution. The anodic refining method also includes selecting any of a light oxidation and light reduction step, a non-oxidation and light reduction step, or the stoppage of the oxidation and reduction step, according to the sulfur content in the copper solution after the crude copper solution has been passed into the anode furnace 2. COPYRIGHT: (C)2010,JPO&INPIT |
