Patent ID: 8382879
Filing Date: 2013-02-26
Classification: C22B

Abstract:
1. A copper smelting method comprising: supplying an oxygen-enriched gas, a solvent, and a copper concentrate into a reaction tower of a furnace, while not supplying a coke material; supplying pig iron to slag that is generated in a settler of the furnace, and generating heat by oxidizing at least a part of Fe and sulfur in the copper concentrate and at least apart of Fe and C in the pig iron: wherein: a sulfur/copper weight ratio in the copper concentrate is in a range of from 1.05 to 1.15; an oxygen concentration in the oxygen-enriched gas is in a range of from 60 to 90 vol. %; and the pig iron contains 1 to 6 wt. % of carbon, 1 to 30 wt. % of copper, and has a particle size of 0.3 to 8 mm.