Besides tailings, the solid waste discharged from iron and steel enterprises is mostly smelting slag, mainly including blast furnace slag, slag, steel slag, iron alloy slag, etc. The smelting slag storage not only occupies a large amount of land, but also causes certain environmental pollution, and causes harm to the health of the public. Therefore, the comprehensive utilization of steel slag to achieve its reduction, reuse and harmlessness is very necessary for the sustainable development of the steel industry.
Blast furnace slag has achieved a discharge-use balance in industrially developed countries, mainly used as a raw material for slag cement and production of agricultural fertilizer. In order to solve the problem of comprehensive utilization of blast furnace slag, after long-term investigation, POSCO finally chose to cooperate with our company CHAENG to build the 300,000t/y GGBS Plant (Ground granulated blast-furnace slag plant).