Vertical Mill Making Slag Turn Waste into Wealth

Strategy of sustainable development is a major proposition of the 21st century, it is also the common strategic objectives of the development of countries. With the development of modern science and technology, ultra-fine grinding technology is more and more attention of researchers.In the building materials industry,Vertical Roller Mill is more widely used, as making slag grind into powder instead of slag cement concrete, cement increased variety, production of special cement and fine cement, improve the quality of cement and cement admixtures refine and improve the incorporation of admixtures, reduce production costs.

According to incomplete statistics, the annual Chinese steel industry produced about 170 million tons of solid waste, including iron blast furnace slag and slag of about 50 million tons, 900,000 tons ferroalloy slag, steel slag 20 million tons, 16.6 million tons dust and mud,and 5.4 million tons of slag.If this large pile of slag is not addressed, it will generate dust, pollution of the atmosphere; if discharged into the river system can cause blockage of the river, and one of the toxic chemicals can also cause harm to humans and creatures, so we need to perfectly mill  which grinding treatment and secondary use.

At present, 80 percent of the slag are used in concrete and cement processing industry,in this session, Vertical Mill played an important role in promoting the development of the concrete industry.Processing slag grinding equipments have many types,In addition to the traditional ball mill,vertical mill is undoubtedly the most widely used.It can be processed slag to a different fineness for different production.

As we all know,regardless of slag as cement mixing material or fine performance concrete admixtures,the conditions all meet the fineness requirements.Typically, the surface area of cement mixed material requirements for 350 ~ 500m2/kg;fine concrete admixtures for 420 ~ 600m2/kg,some of the material even up to 800m2/kg even more,the research shows that the fineness of superfine slag powder in concrete admixture reach 500m2/kg or more,the incorporation of cement concrete can save 20% to 30%,in addition to reducing the cost of production, it can greatly improve the strength of concrete,easy and durability.

As the leading manufacturer of vertical mill,Great Wall Machinery Co.,LET introduced world-class technology, combined with many years of experience in the design of advanced vertical mills ,we launched a specialized device for ultrafine grinding of slag - slag vertical mill.It is reported that the Great Wall of slag vertical mill machinery has low energy consumption (system power consumption does not exceed 42kWh/t), good quality ore production (specific surface area can reach 430 m2 / kg, 7 day’s activity index reached about 100%).It is the mainstream slag grinding equipment, welcome customers to visit us.