Proper Combination of Oxygen Enrichment Percentage With Large Amount of Coal Powder Injection in Blast Furnace

In order to improve the effect of BF.The influence of oxygen enrichment on pulverized coal combustion was studied under the simulation burning conditions of BF with two system burning furnace.Proper oxygen enrichment percentage was chosen.All the phenomena of experiment were analysed.The results show that under the condition of hot-blast air and oxygen enrichment,the combustion rate of single coal and mixed coal is increased,but the bituminous coal is better than anthracite coal.The increase of combustion rate can also be gained by reducing the size of pulverized coal and increasing the blast temperature.When oxygen enrichment percentage is high and the size of pulverized coal is small,the influence is not apparent.