C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
39/54
C21B 13/02 (2006.01) C10J 3/48 (2006.01) C21B 13/00 (2006.01)
Patent
CA 1310826
Method for operating a melt-down gasifier and melt-down gasifier for the implementation of said method Described is a method for operating a melt-down gasifier (4) in which iron-ore-containg charge materials or iron sponge obtained from same by direct reduction are smelted due to the addition of carbon carriers and blowing an oxygen-con- taining gas through oxygen nozzles (6) into a fluidized bed created by same, and are (further) reduced to make liquid pig iron or steel starting material. On failure or reduction of the oxygen supply below a predetermined quantity and on failure of the water cooling system of the oxygen nozzles, the still present oxygen supply is cut-off and an inert gas is fed into the melt-down gasifier through the said oxygen nozzles instead, for protecting said oxygen nozzles. Thus, liquid fluidized bed matter is prevented from penetrating into the oxygen nozzles and to solidify in same. In the case of failure of the water cooling system of the oxygen nozzles, the inert gas serves also at the same time as cooling medium. (Fig. 1)
585491
Nagl Michael
Pirklbauer Wilfried
Seirlehner Leopold
Vuletic Bogdan
Deutsche Voest-Alpine Industrieanlagenbau Gmbh
Mcfadden Fincham
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