Classification and granulation equipment for liquid copper matte

Abstract

The invention discloses grading and granulating equipment of liquid copper sulfate. The grading and granulating equipment comprises an air quenching granulating device, a spraying device and a high-pressure gas injector, and further comprises an air cooling barrel and a spraying barrel. The spraying barrel is rotationally connected to the outer portion of the air cooling barrel. Openings are formed in the two ends of the air cooling barrel. A smoke exhaust fan is arranged at the front end of the air cooling barrel, and the front end of the air cooling barrel is supported out from the spraying barrel. The air quenching granulating device and the high-pressure gas injector are arranged at the rear end of the air cooling barrel. The high-pressure gas injector is arranged by inclining upwards. A leakage hopper is arranged on the front portion of the air cooling barrel, and a leakage opening with an opening facing the front end of the air cooling barrel is formed in the bottom of the leakage hopper. The spraying device is arranged at the top in the spraying barrel. A spiral feeding piece is fixed to the inner wall of the spraying barrel, and a drive motor is arranged to drive the spraying barrel to rotate. In the grading and granulating equipment, the air cooling barrel and the spraying barrel are located in relatively-isolated space, and therefore contact of SO2 and water mist is little, formed acid mist can be reduced, corrosion of acid mist to the equipment can be reduced, and the service life of the equipment can be prolonged.

Description

technical field [0001] The invention relates to the field of mechanical technology, in particular to a grading and granulating equipment 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 c...

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 as high as 1150-1250°C, which will cause an explosion when thrown into water, and the operation is extremely unsafe; 2. The particles obtained by water quenching process need to go through two crushing and two drying procedures , 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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