The rapid development of iron and steel enterprises brings about a large number of steel slag, because the steel slag can not be timely treatment, resulting in a large number of steel slag occupation of land, pollution of the environment, and most of the waste.
But in fact, steel slag is also a kind of comprehensive utilization of resources, steel slag contains a large number of slag steel, calcium oxide, iron and magnesium oxide and other available components, can effectively realize the recycling of steel slag resources.
Steel slag treatment:
Steel slag is divided into electric furnace slag, open furnace slag and converter slag three kinds, the comprehensive utilization of steel slag mainly involves: pretreatment, valuable component recovery, used as building materials, metallurgy, agriculture and other aspects, of which building materials accounted for about 40%; At the same time, the research on pretreatment of steel slag accounts for about 32%, and more and more attention is paid to the pretreatment work in the early stage, so as to be more conducive to the performance of the later prepared products.
At present, steel slag is commonly used to be ground into micro powder by steel slag vertical mill, because grinding is not only a process of particle reduction, but also accompanied by changes in crystal structure and surface physical and chemical properties, and the activity of steel slag micro powder after grinding can be greatly improved. The main technical requirements of steel slag powder are specific surface area, density, moisture content, free calcium, sulfur trioxide, alkalinity coefficient, activity index, stability, according to the activity is divided into one and two.

Steel slag utilization:
There are two main ways to comprehensively utilize steel slag as secondary resources. One is to recycle steel slag as smelting solvent in our factory, which can not only replace limestone, but also recover a large amount of metal iron and other useful elements from it. The other is as a raw material for making road building materials, building materials or agricultural fertilizers.
Steel slag as cement mixture has long been included in the national standard, after the steel slag vertical mill grinding into steel slag powder as cement mixture. When the specific surface area of steel slag powder is more than 400m2/kg, the activity of steel slag powder is fully stimulated when it is used with slag powder. When its specific surface area is more than 450m2/kg, it is similar to slag powder, and steel slag powder has a good market prospect.
Thus, the realization of steel slag resource utilization, not only can solve the land occupation, environmental pollution, but also can turn the waste into treasure for the enterprise to bring considerable economic benefits, and help the country to achieve sustainable development road, one by one!