Abstract
Experimental as well as theoretical studies were made on the oxygen blast furnace characterized by the combined injection of pulverized coal and following results were obtained.
(1) In the test plant with a production capacity of 15 t/d, 1.2 kg of pulverized coal per 1 Nm3 of oxygen in blast was injected without any trouble and such an operation result as the coal rate of 407 kg/t, the coke rate of 258 kg/t and the productivity of 7.35 t/d/m3 was achieved.
(2) By using one dimensional blast furnace mathematical simulation model, it was predicted that the pulverized coal rate of 375 kg/t, the coke rate of 180 kg/t and the productivity of 3.3 t/d/m3 can be achieved in a commercial blast furnace.
