Anhydrous granulating technique of metallurgical slag and device thereof

Abstract

The invention relates to the field of pyrometallurgy, in particular to an anhydrous granulating technique of metallurgical slag or melted sulphonium and a device thereof; the device comprises a granulating chamber, a dispersing device and cooling water spray heads, wherein an inner cavity of the granulating chamber is communicated with a slagging chute; a bottom slag hole corresponds to a feed bin; the dispersing device is arranged inside the granulating chamber and positioned under an outlet of the slagging chute; and the cooling water spray heads are also arranged inside the granulating chamber and positioned at the two sides of and under the dispersing device. Compressed gas is adopted in the granulating chamber to lead the melted slag to be dispersed into numerous tiny liquid drops, and the liquid drops are simultaneously pre-cooled in the air to become semi-molten or even solid granules which are then cooled by water mist, so that the aim of granulating can be achieved; finally, after being granulated and cooled, the slag can be settled into the feed bin by means of gravity. The invention has simple technique, convenient operation and a little investment, and overcomes the defects of the traditional water quench process.

Description

technical field [0001] The invention relates to the field of pyrometallurgy, in particular to an anhydrous granulation process and device for metallurgical slag or molten matte. Background technique [0002] In the pyrometallurgical industry, the slag or matte produced by the metallurgical furnace is in a high-temperature molten state. Once cooled, it will form a hard solid solution, which will bring great difficulties to the next process. Therefore, the granularity of high-temperature molten materials It has become an indispensable link in pyrometallurgical production. [0003] At present, the traditional granulation process of high-temperature molten slag or molten matte is based on the process of quenching the high-temperature molten body with cold water under pressure, relying on water flow, water pressure and rapid cooling of high-temperature objects to produce bursts to achieve granulation. Purpose. Since water is the only granulation and cooling medium in the proces...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the problem that the metallurgical slag or matte granulation system in the old process occupies a large area, the operation and maintenance costs are high, and at the same time, the water quality in the water system deteriorates and the environment is polluted

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