Slag is a derivative of the steelmaking process. The vigorous development of the steel industry has caused the continuous increase in the output of steel slag. A large amount of steel slag has accumulated and occupied land and caused environmental pollution. The reuse of steel slag is imminent. Steel slag grinding came into being. The finished product obtained after grinding steel slag is called steel slag powder or steel slag micro powder. Today, xingaonai will take you to learn about the selection of steel slag grinding machine and how to use steel slag grinding?

Selection of steel slag grinding machine
Realizing the use of steel slag grinding can reduce the environmental pollution caused by the production of steel slag and cement, while protecting the resources of the steel and building materials industries, achieving low-carbon production, and contributing to the realization of "green water and green mountains". Steel slag grinding machine chooses vertical grinding machine. Steel slag is a difficult-to-grind material. Choosing vertical grinding machine can better meet the processing needs of large-scale mineral powder. This equipment integrates crushing, conveying, grinding and drying to grind steel slag into powder. The specific surface area of ​​the finished product can reach more than 420m²/kg, with good activity and wide range of uses.
How to use steel slag powder?
Steel slag powder can be used in cement admixtures to improve cement performance, increase setting time and reduce hydration heat, etc. It can also be used as an admixture for concrete. As an admixture for concrete, it can improve the fluidity and pumpability of concrete. It can also be used in saline-alkali land and sandy land to achieve the recycling of resources-products-renewable resources. It also includes return to metallurgy for reuse, civil engineering materials, water treatment, agricultural fertilizers, decolorization of mixed juice of sugarcane sugar factories, and production of desulfurizers for removing sulfur dioxide from sintering flue gas.
1. Concrete admixture
The production of micro powder or composite micro powder from steel slag can eliminate the problem of difference in grindability in the production of steel slag cement. When the steel slag is ground to a certain fineness by a steel slag vertical mill and the specific surface area is greater than 400m2kg, the metal iron can be removed to the greatest extent. The crystal structure of the material is reorganized through ultrafine grinding, the surface condition of the particles changes, the surface energy is increased, the activity of the steel slag is mechanically stimulated, and the characteristics of hydraulic cementitious materials are brought into play.
2. Road material
Steel slag can be used as road cushion and base after stabilization treatment. Its strength, bending resistance and impermeability are better than natural stone. There are corresponding industry standards "YB/T801 1993 Steel slag for engineering backfill" and "YB/T803 1993 Steel slag for roads". However, the added value of steel slag as backfill and road cushion and base is low, and steel enterprises and construction units do not pay much attention to it.
The comprehensive utilization of steel slag can reduce environmental pollution, turn waste into treasure, and create huge economic benefits. It is an effective way to achieve sustainable development and is of great significance to the country and society.