Metallurgist.in

Principal concepts of physical chemistry useful in steel making are; System: – It is a group of bodies which interact with each other and can be isolated, either mentally or physically, from the surroundings Ex. Metal-slag systems. A system composed of a number of portions, possessing …

1. QUALITY OF CHARGE MATERIAL: A blast furnace charge consists of coke, ore or sinter, and limestone. These materials must be in lumps of a certain size (40-60 mm). Larger lumps prolong the process of reduction and fluxing. Smaller lumps block the flue-gas passages and prevent …

  Burden materials charged to the top of the blast furnace descend slowly. The materials stay in the furnace 4-6 hr. Gases evolving in coke burning near the tuyeres flow against the descending charge at a great velocity throughout the cross section of the furnace. The …