Horizontal type molten pool smelting process outside furnace and dedicated device thereof

Abstract

The invention discloses a horizontal type molten pool smelting process outside a furnace and a dedicated device thereof. The process comprises the following steps: uniformly mixing copper concentrate, quartz stone, limestone and cold materials; continuously adding the copper concentrate, the quartz stone, the limestone and the cold materials into a molten pool smelting furnace; blowing enrichment oxygen and compressed air by an oxygen lance inserted into the bottom of the molten pool smelting furnace to strongly stir a smelting body; rapidly finishing mass transfer and heat transfer processes in the molten pool, so as to generate copper sulfonium, smelting slag and high temperature flue gas. The process is characterized in that the copper sulfonium and the smelting slag continuously flow into an electric heating front bed through a smelting body chute; the copper sulfonium and the smelting slag are stilled, settled and separated in the electric heating front bed to obtain the copper sulfonium and the furnace slag; the copper sulfonium enters a converting furnace through a copper sulfonium outlet; the furnace slag is discharged through a furnace slag chute; the dedicated device comprises a main body of the horizontal type molten pool smelting furnace outside the furnace and the electric heating front bed; and the devices are connected through the chutes. With the adoption of the horizontal type molten pool smelting process outside the furnace and the dedicated device thereof, the copper sulfonium is separated from the smelting slag outside the furnace; the amount of copper contained in the slag is smaller than 0.5%, the slag can be directly discarded; and various low-grade copper mine such as gold concentrate and high arsenic ore can be processed.

Description

technical field [0001] The invention relates to a non-ferrous smelting process and its special equipment, in particular to a smelting method and its special equipment for producing copper matte or other metals by smelting in a horizontal molten pool separated outside the furnace, and belongs to the technical field of non-ferrous metal pyro-smelting. Background technique [0002] Due to geographical factors and concentrate types, various copper smelting processes have been formed around the world. Generally, copper pyrometallurgy processes are divided into two categories: flash smelting and molten pool smelting. [0003] Flash smelting is based on the technology of Finland's Outokumpu and Canada's INCO, which has advanced technology, large processing capacity, environmental protection and good working conditions. Because of the process of deep drying of concentrate and slag depletion, etc., there are many processes and long process flow. The furnace body is cooled by a copp...

AI Technical Summary

Problems solved by technology

This outside-furnace separation horizontal smelting technology draws on the strengths of others and overcomes the shortcomings of the existing copper smelting technology. The whole process is short, the production scale is flexible, the investment is appropriate, the energy consumption is low, the copper content in the slag is low, and it is energy-saving and environmentally friendly. The best smelting technology suitable for the status quo of my country's metallurgical industry

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