SectorsGranulated blast furnace slag

Granulated blast furnace slag

by productCN 2618 00 00

What runs off a blast furnace and is quenched into a glassy sand that sets like cement. It is the one material that joins these two industries in the wrong direction: it leaves steel as a by-product and arrives in cement as a substitute for clinker, so every furnace steel converts away from also takes away part of cement's answer.

Read in Steel.

Produced by

  • Steelsince 2023-06150-800 thousand tonnes per year per blast furnace ZKG International — 'The steel production transformation process in Europe', ZKG 6/2023“Depending on the individual blast furnace capacity yearly 150-800 thousand t of GBS will vanish together with each substituted blast furnace.” — data/transition/parameters.json · The volume is stated as what is LOST per furnace converted, which is the only figure the source gives and the one that matters: the quantity is falling by construction as this sector decarbonises.

Substitutes for

  • Clinkersince 2023-06“For decades blast furnace slag has been used mainly as a cementitious material (if it is glassy due to a quenching process for the liquid slag)” — data/transition/materials.json

Sources