Air-quenching water-cooling granulation method of lead matte

Abstract

The invention discloses an air-quenching water-cooling granulation method of lead matte. The air-quenching water-cooling granulation method of the lead matte comprises the following steps that (1) a round hole allowing liquid to flow out and a sealing switch matched with the round hole are arranged on the lateral portion of a smelting furnace, the round hole is blocked through the sealing switch first, then the lead matte is placed in the smelting furnace, and afterwards, the sealing switch is opened to allow high-temperature molten lead matte to flow out of the smelting furnace via the roundhole, so that a melt flow is formed; (2) high-pressure compressed gas is sprayed out of a high-pressure gas container to tangentially impact the melt flow formed in step (1), the melt flow is shearedinto high-temperature tiny liquid particles by the high-pressure compressed gas, and then the high-temperature tiny liquid particles are sprayed into air in a parabolic shape; and (3) the high-temperature liquid particles sprayed out in step (2) are cooled and hardened when moving in air, the hardened particles fall into a cooling water pool arranged below the smelting furnace so as to be cooled and are finally deposited to the bottom of the cooling water pool so as to be collected, and thus, air-quenching water-cooling granulation of the lead matte is completed. By adoption of the air-quenching water-cooling granulation method, the lead matte is effectively refined into small particles, the process is simple, and the safety is high.

Description

technical field [0001] The invention belongs to the technical field of pyrometallurgy of nonferrous metals, and in particular relates to a granulation method of lead matte copper air quenching and water cooling. Background technique [0002] Lead matte is an intermediate product produced in the process of pyrotechnic production of lead-zinc mines. The copper content in the produced lead matte is 500,000 to 600,000 tons, which has a very high recovery value, but the lead matte slag is difficult to granulate, and the obtained material is in a large block, and the material is recycled in the lead matte process. Generally, it needs to be broken and finely ground to fine particles first, but the material is severely alloyed and has high hardness, and it is very difficult to crush and finely grind large materials. Therefore, in order to recycle lead matte, it is necessary to solve the lead matte first. Granulation problem. [0003] The traditional granulation process of lead mat...

AI Technical Summary

Problems solved by technology

[0002] Lead matte is an intermediate product produced in the process of pyrotechnic production of lead-zinc mines. The copper content in the produced lead matte is 500,000 to 600,000 tons, which has a very high recovery value, but the lead matte slag is difficult to granulate, and the obtained material is in a large block, and the material is recycled in the lead matte process. Generally, it needs to be broken and finely ground to fine particles first, but the material is severely alloyed and has high hardness, and it is very difficult to crush and finely grind large materials. Therefore, in order to recycle lead matte, it is necessary to solve the lead matte first. Granulation problem

[0003] The traditional granulation process of lead matte usually adopts water quenching process, which is widely used in the production of other metal industries, such as steel and nickel. To cool and disperse the pyrotechnic slag, eventually forming small particles, water and high-temperature lead matte contact, a chemical reaction occurs, forming a large amount of hydrogen, which is very easy to explode in this high-temperature environment. On the other hand, this high-temperature material will If the water is wrapped, the water vapor generated cannot be dispersed in time, and the phenomenon of blasting will also occur. The use of this process will pose a safety threat to production equipment and personnel.

Therefore, this process is not suitable for lead matte, and seeking an efficient and safe lead matte granulation solution has become an important prerequisite for the comprehensive recovery of lead matte

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