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Blast furnace slag is a by-product of the iron oxides reduction. However for the high productivity units slag means a problem because very large amounts of by-products are dealt with. So, it is necessary to find area for slag discharging. This means additional costs in steel production. At present, blast furnace slag is employed as secondary raw material for cement preparation but this allows a limited recovery. The use of a large amount of slag is therefore an important objective for the steel maker. Economical and industrial analyses have been carried out and new ways to recover slag have been located. Namely the concrete industry and manufacturing of white past ceramic tiles. In the first one the binder property of the slag could be exploited. To manufacture ceramic tiles, raw materials having a good commercial value have to be used. If slags could be utilized successfully, an increase of the slag value could be expected.

Additional information

Authors: TONELLI M, Centro sviluppo materiali SpA, Roma (IT)
Bibliographic Reference: EUR 16742 IT (1997) 50pp., FS, ECU 8.50
Availability: Available from the (2)
ISBN: ISBN 92-828-1426-2
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