With the development of steel industry, quantity of discharged steel slag increases day after day, but how to deal with those steel slags? Some experts had supposed to expand the steel slag field, but some problems are coming with it, it not only occupy the precious land, but also cause the secondary pollution of land, and destroy the ecological environment. In recent years, learning the recycling and reusing method from developed country have been the new method to dispose the steel slag discharged from Chinese steel mill.
It is said that the utilization rate of steel slag for some developed countries reach 60%. For example, French and Canada use steel slag as ballast of railway. Japan and Germany use steel slag as cement raw material. Some countries of Western Europe extract the calcium, silicon, manganese and microelement in steel slag use as fertilizer, and all of those make steel slag re-apply in life, the problems of difficult stacking and environmental pollution are solved completely.
However, the utilization rate of steel slag in China is about 10%, and the industrial construction with environmental protection, modernization and science and technology is propelled, therefore, to improve the comprehensive utilization technique of steel slag has become the unique measure to eliminate outdated capacity.
After years of hard working and continuous exploration, in 2012,CHAENG (Great Wall Machinery), China first-class grinding equipment manufacturer, launched vertical roller mill, which is the most advanced process system, to meet the utilization of steel mill.
Engineer of CHAENG’s institute introduced that before feeding into
vertical roller mill, the raw material equipped with preprocessing equipment according to different size of steel slag. Through the optimizing match, activity and granularity of ground steel slag improved greatly, and no matter as cement mixed material or concrete admixtures, steel slag has obviously competitive advantages in the market.
The advanced technology has been applied successfully by a Steel Mill in Guangdong, through one year of production, the turnkey GGBFS production line constructed by CHAENG not only with high efficiency production, but also with energy saving and environmental production, the sales of iron powder added with steel slag powder make the steel mill won 90 million profits.
