Closed pelletization system for liquid copper matte

Abstract

The invention discloses a closed pelletization system for liquid copper matte. The system comprises a sealed box body and an air quenching pelletization device, a spraying device, a particle collection device and a transportation device, which are arranged in the closed box body. The air quenching pelletization device is arranged on one end of the sealed box; a feeding end of the air quenching pelletization device extends outside the sealed box body; the spraying device is arranged on the top of the sealed box; the transportation device is arranged on the bottom of the sealed box; an output end of the transportation device extends outside the sealed box body; the particle collection device is in a V groove shape with opening at the bottom; and the bottom opening of the particle collection device is above the transportation device. The closed pelletization system for liquid copper matte has advantages of high safety factor, small pollution, long service life and high production efficiency.

Description

technical field [0001] The invention relates to a nonferrous metal smelting system, in particular to a closed granulation system for liquid copper matte. Background technique [0002] Copper sulfide concentrate smelting is generally divided into four main procedures: smelting, blowing, pyro-blowing and electrolytic refining. The purpose of smelting is to make matte (commonly known as matte), that is, to melt copper sulfide concentrate into MeS eutectic (CuS-FeS) under high temperature and oxidizing atmosphere, to enrich the copper in the concentrate in matte, Most of the iron oxides and the added flux create slag. The process of blowing is to remove Fe and S and some harmful impurities in matte copper by oxidation, so as to turn matte copper into blister copper. The blowing process is extremely important because it determines the copper smelting efficiency in the whole smelting process. [0003] There are many blowing methods for copper matte, such as horizontal converter...

AI Technical Summary

Problems solved by technology

There are many problems in water quenching of copper matte: 1. The temperature of liquid copper matte is high, reaching 1150~1250°C. It will cause an explosion when thrown into water, and the operation is extremely unsafe; 2. The particles obtained by water quenching process need to be crushed twice and baked twice Dry procedure, long process flow and high energy consumption; 3. SO produced by water quenching of copper matte 2 Unable to collect acid

However, some copper particles cannot be cooled to the design temperature in the air, and after falling into the pool, they will still cause explosions, generate noise, and generate a large amount of SO 2 , not only cannot completely solve the safety problem, but still needs to carry out drying and dehydration procedures, and a large amount of SO 2 It is easy to cause equipment corrosion and increase production and maintenance costs

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