C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 5/06 (2006.01) C21C 5/36 (2006.01)
Patent
CA 2080850
ABSTRACT OF THE DISCLOSURE The invention relates to a porous granulated steel slag having a weight per unit volume of less than 1 kg/dm3 in the loosely dumped state and of 0.99 kg/dm3 in the compacted dumped state, having a free calcium oxide content of at most 1/10 of the content in the non- granulated slag. The present steel slags are obtained by spraying a molten stream of steel slag with a sprayed pressurized stream of water. After comminuting, for example by grinding, and removal of iron, the porous granulated steel slag can be separated into a ferrite- richer fraction, which can serve as raw material for steel production, and a lower-ferrite fraction, which can serve as raw material for an inorganic binder. Granulated steel slag is also used as aggregate in building materials, as raw material in road building materials and for embankment materials, and as cement replacement material.
Pelt & Hooykaas B.v.
Riches Mckenzie & Herbert Llp
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