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Abstract

The purpose of the work reported here was to identify and establish experimentally the characteristics of coal-water and coal-tar mixtures that influence thermal conditions in the zone in front of the blast furnace tuyeres when these auxiliary fuels are injected. The knowledge thus acquired should enable the operator to forecast the maximum quantities to be injected and the best injection conditions for the various auxiliary fuels. Consideration has been given to coal-water mixtures containing 70% coal (CWM) and to coal tar mixtures (CTM) with between 40% and 50% coal, as well as to three different kinds of pulverized coal. Trials have been run on preparation and injection of CTM into a works blast furnace to check on the feasibility of the new techniques. From an economic viewpoint, CTM and CWM are convenient when the fuel-oil price is progressively rising but not at present due to the low cost of fuel-oil.

Additional information

Authors: MALGARINI G, Centro Sviluppo Materiali S.p.A, Roma (IT);PALOMBA R, Centro Sviluppo Materiali S.p.A, Roma (IT);COLACCHI B, Centro Sviluppo Materiali S.p.A, Roma (IT);FONTANA R, Centro Sviluppo Materiali S.p.A, Roma (IT);FRATTI L, Centro Sviluppo Materiali S.p.A, Roma (IT);FEDERICO G, ITALSIDER, Genova (IT);VECCHIOLA G, ITALSIDER, Genova (IT);MELE R, ITALSIDER, Genova (IT)
Bibliographic Reference: EUR 11972 IT (1988) MF, 102 pp., ECU 8, blow-up copy ECU 13.75
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