METHOD FOR OPERATING FLASH SMELTING FURNACE FOR SMELTING COPPER

摘要

PURPOSE:To enable the changeover of mineral oil to other fuel in a flash smelting furnace for smelting copper when a copper concentrate, etc. are charged into the furnace to produce matte and slag, by adding fine-grained coke and/or low- grade coal of a prescribed size to a prescribed position of the furnace as auxiliary fuel. CONSTITUTION:Fine-grained coke (precipitated coke breeze) and/or low-grade lump or fine coal of =40mm. size is prepared. The solid fuel is added to a system for charging a copper concentrate, a flux, etc. on the upper stream side of a flash smelting furnace with respect to a copper concentrate dryer kiln and a flash transporter. The solid fuel is used as auxiliary fuel to maintain the operation temp. of the furnace.