| abstract |
The invention provides a copper refining method for single-furnace casting in an anode furnace without oxidation and shallow reduction. By controlling the end point of the converter blister copper, the converter blister copper with specific S, O and other content components is obtained, and refined, and nitrogen is included in the refining process. During the self-oxidation reaction process, the temperature of the copper liquid is heated, and the reduction reaction is carried out, and the different flow rates of nitrogen in the self-oxidation and reduction processes are controlled. During the reduction reaction process, LNG is introduced to complete the reduction process, and the temperature of the obtained anode copper is controlled At 1190±10°C, half-furnace casting is performed directly. Compared with the double-furnace operation, the redox time can be greatly shortened by the single-furnace operation, the unit consumption of LNG is significantly reduced, and the operation rate is further improved. |