Slag, also known as blast furnace water-quenched slag, is the waste slag after the hot-melt blast furnace slag is rapidly cooled in water. There are two main types: slag pool water quenching and furnace water quenching. Through the processing of the grinding machine, under the action of cement clinker, lime, gypsum and other stimulants, the obtained slag fine powder can be used as high-quality cement and concrete raw materials.

Driven by ecological governance and circular economy policies, the resource utilization of industrial solid waste is particularly important. Industrial solid wastes such as slag and slag have achieved a leap in value through innovative grinding processes and have been transformed into high-value-added products such as green building materials, which not only alleviates environmental pressure, but also injects new momentum into the low-carbon transformation of the construction industry.