Combined smelting method for crude copper

Abstract

The invention relates to copper metallurgical industry, in particular to a combined smelting method for crude copper. The method is characterized by comprising the steps that crude copper is fed into a specially-made flame furnace at first to be smelted and then flows into a stationary anode furnace for deoxygenation refining, and the two furnaces are combined to achieve continuous casting for an anode plate. The method comprises the specific smelting technological steps that a mechanical lifting and feeding device is started at first to fill the flame furnace with copper materials, all nozzles on the lower portion of a furnace body are started for heating and smelting the copper materials, the smelted copper materials flow into a copper liquid settling pond through a discharge channel, a high-energy nozzle is started for heating the area near a discharge outlet, and meanwhile all heating nozzles are started for increasing the temperature of the copper liquid settling pond to 1200 DEG C or more; and a slag rake is adopted to stretch into a skimming gate to skim slag, and clean copper liquid subjected to deslagging treatment flows into a chute and then enters the stationary refining anode furnace for completing refining. The method solves the problem that a traditional crude copper smelting technology is low in heat efficiency, high in energy consumption, low in yield, long in production period and the like, and is mainly used for crude copper processing.

Description

technical field [0001] The invention relates to metallurgical industry technology, in particular to a combined smelting method of blister copper. Background technique [0002] In the production of copper smelting industry, the traditional smelting process of blister copper is to use a charging car to add cold blister copper to a fixed anode furnace, that is, "feeding operation"; then use the burner of the anode furnace to burn fuel to heat the blister copper. Until the blister copper is completely melted into molten copper, this process is called "melting operation". The burner uses natural gas fuel. Due to the low thermal efficiency of the fixed anode furnace, generally 15%, the natural gas consumption of the melting operation is high, generally 80~90Nm 3 Natural gas per ton of copper, the daily output is low, generally 120 tons, and the production cycle of a furnace is long, 24-36 hours per furnace. On the other hand, the feeding operation of the traditional process is ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low thermal efficiency, high energy consumption, low output and long production cycle of the traditional blister copper smelting process, and provide a combined blister copper smelting method

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