A kind of steel slag hair slag method

Abstract

The invention discloses a slagging method for slag. The slagging method for slag comprises the steps of: stopping spraying water when the inner side of the slag is red, shortening the slagging time and controlling the slagging water quantity; and evaporating the slag on the surface by virtue of the temperature of the red slag, blending the high-temperature red slag with the slag and conveying the mixture to a magnetic separation work section site to be continuously cured to prolong the curing time and accelerate separation of the slag and iron, wherein magnetic separation is further facilitated and free calcium oxide in the slag is further exerted to the maximum extent. Meanwhile, the water content of the slag is reduced, the hidden danger that the slag which is high in humidity is sticky to equipment such as a belt and a magnetic separation barrel is eliminated, the metal iron recovery rate is improved, and the purposes of directly improving the output of washed grained iron and washed ball-milled waste slag steel, decreasing the cost and increasing the benefit are achieved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a steel slag generating method. Background technique [0002] Steel slag is a major companion in the production process of iron and steel enterprises. As a derivative of the steelmaking process, its annual output is also increasing with the increase in steel production. Steel slag is a potential resource that must be recovered and utilized. Steel slag is a by-product of steelmaking, and its output is generally 12% to 20% of crude steel output. Storing steel slag not only wastes a lot of land, but also poses a serious threat to the environment. Improve the steel slag processing capacity and technical level, and accelerate The comprehensive utilization of steel slag is imminent. Selecting and applying advanced and effective steel slag treatment process and resource utilization new technology to achieve effective separation of slag and iron and comprehensive utiliza...

AI Technical Summary

Problems solved by technology

Although the hot splashing method can effectively cool down the steel slag and is suitable for treating all steel slags, its disadvantages are that it occupies a large area during the treatment process, takes a long time for slag generation, and has a large amount of water for slag generation; the slag after treatment has high activity and poor stability. The effect of iron separation is not good, which is not conducive to magnetic separation, and the content of free calcium oxide in steel slag is high; the water content of steel slag is high, and the humidity of steel slag is high, so it is easy to stick to the belt and magnetic roller; the recovery rate of metal iron is low, the cost is high, and the effect is poor