Ore residue after mineral processing or smelting is called slag. The slag containing SiO₂ is acid slag, and Al₂O₃ and CaO are mostly alkaline slag. The activity of alkaline slag is higher than that of acid slag. Slag has certain water hardness and is not suitable for long-term storage. Slag powder is the raw material of blast furnace slag in metallurgical industry. It is an indispensable inorganic mineral admixture for high strength and high performance concrete. It is a high-tech product of building materials. Using slag powder as concrete admixture can not only replace cement equally and reduce the cost of concrete, but also make full use of blast furnace slag. It saves a lot of precious resources that can not be regenerated for the country and alleviates the shortage of cement supply in time.

Slag Processing technology

Slag micro-powder is the process of processing and reusing the slag with grinder. The grinder produced by Vanguard Machinery adopts grinding roller to grind the material directly on the grinding plate. The energy consumption is low. Compared with the ball mill, the energy consumption is reduced by 30%-40%. The fineness of the product can reach D97 < 5 micron at one time. At the same time, the investment and operation cost is low. It can be used as the best equipment for processing slag because of its strong drying ability, simple operation, reliable operation, stable product quality, convenient maintenance and low carbon environmental protection. The construction contents of the slag powder project include slag conveying to slag grinding, powder storage, automobile bulk, packing and leaving factory, main production process of train bulk, general plane engineering, electrical, automatic control, power supply and drainage engineering, etc. Slag grinding mainly adopts the international advanced and mature European plate grinder process which integrates fine grinding, drying, grinding, flour separation and transportation. The process has the advantages of small floor area, simple process flow, high grinding efficiency, low energy consumption, low noise, large drying capacity, easy adjustment of product fineness, no dust pollution and maintenance prescription. Convenient and reliable operation.
Slag plays an important role in industrial production, especially in some major factories. The slag is refined into slag cement, slag powder, slag powder, slag Portland cement, slag wool, blast furnace slag, granulated blast furnace slag powder and copper slag. Besides, blast furnace slag can also be used as raw material for casting stone, glass ceramics, fertilizer, enamel and ceramics. Slag powder is mainly used to mix in cement and to add in commercial concrete to replace the amount of cement used in various kinds of concrete and cement products. It can obviously improve the comprehensive performance of concrete and cement products. As a new admixture of high performance concrete, slag powder has the advantages of improving various properties of concrete.

Application fields Through the deep processing, Slag can be widely used in the following industries.