Study on Industrial Test of the Oxygen Blast Furnace

Industrial test was carried out in 8 m3 oxygen blast furnace,whose hearth and shaft were respectively designed a row of tuyeres.Oxygen and pulverized coal were injected into the hearth tuyeres,and preheating coke oven gas was injected into the shaft.The test results show that the oxygen blast furnace is feasible to inject oxygen and massive coal,coal ratio can reach to 450 kg,and production efficiency can be greatly improved.When 180 m3/t preheated coke oven gas is injected to the shaft,coke ratio and coal ratio will decrease 90 kg and 50 kg respectively,and productivity will increase by 20%.If the oxygen blast furnace is produced in a commercial scale and top gas is recycled,it can significantly reduce fuel consumption and save cost.