The deep processing of blast furnace ironmaking slag can be well recycled

After deep processing, blast furnace ironmaking slag can be well recycled.

1. Understanding blast furnace slag

Blast furnace slag is a waste residue discharged from the blast furnace during the smelting of pig iron. It is a fusible mixture composed of gangue, ash, flux, and other impurities that cannot enter the pig iron.

. The composition of blast furnace slag varies due to differences in raw materials and processes

2. Use of blast furnace slag

Blast furnace slag can be used to produce slag cement, to make performance stable concrete admixtures, to produce inorganic coatings, to produce slag fibers, to be used in road engineering, to be used as railway slag, and to make unburned bricks using water quenched blast furnace slag.

On the production test surface, the use of slag powder in cement and concrete not only reduces production costs, but also improves the performance and quality of cement and concrete, which is widely recognized and welcomed in the building materials market

How to deal with blast furnace slag

Grinding slag powder is a common treatment method. After being ground to the appropriate fineness by a grinding machine, it is added as a cementitious material to concrete and mortar, which has practical effects. It mainly focuses on the advantages of various properties such as compressive strength, tensile strength, shear resistance, and bending resistance of concrete, replacing about 50% of cement.