Recycling of Slag

As industrial production scales expand, the discharge of waste rock, tailings, slag, and similar materials has shown a steep upward trend. The massive release of industrial solid waste inevitably causes severe environmental damage. Under these circumstances, how can effective methods be employed to transform waste into valuable resources and enhance recycling efficiency?

Sources of Slag Slag generally refers to solidified aggregates formed through high-temperature polymerization, such as water slag and furnace slag. As mentioned earlier, waste rock primarily originates from mines (both metallic and non-metallic), tailings mainly come from tailings ponds or mineral processing plants, while slag typically stems from industrial facilities like cement plants, thermal power plants, and smelters. Applications of Slag In industrial production, slag plays a vital role, particularly in large-scale factories. It is processed into slag cement, slag micropowder, slag powder, slag silicate cement, slag wool, and other products. Blast furnace slag can also serve as raw material for cast stone, microcrystalline glass, fertilizers, enamel, ceramics, and more.

As a new type of admixture for high-performance concrete, slag micropowder enhances concrete properties including compressive strength, tensile strength, shear strength, and flexural strength. Currently, replacing cement in concrete and cement products with an equal amount of slag micropowder has become a mainstream trend in the building materials industry. One of the key pieces of equipment in a slag micropowder production line is the grinding mill.

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