In this paper, a review has been presented focusing on the development of recycling dust and sludge formed in ironmaking and steelmaking processes with injecting method in recent years.

Senior high pressure boiler tube expert analyzes believed that steel prices into profit process tough, need smelting capacity shortages.

Sintering process is essential in the procedure of the iron and steel smelting, sinter, the quality of which has a direct impact on the quality of steel, is a vital raw material for blast furnace.