Aspects of the Control of Charge Distribution in a Blast Furnace with Additional Regulators

摘要

The development and introduction of a charging apparatus with a rotary distributor required additional study of the distribution of the charge materials in the top of the furnace and optimization of the charging regimes to ensure efficient, high-productivity operation of the blast furnace. Studies and previous blast-furnace operation at the West Siberian Metallurgical Combine have shown that a rotary distributor efficiently distributes the charge materials and the ore burden over the radius of the top of the furnace when the charging sequence is composed of a systematically repeating combination of rounds of ore-bearing materials and coke charged onto the surface of the stock in a certain order along certain trajectories. Smooth (auxiliary) control of the radial distribution of the ore-bearing materials and coke is accomplished by changing the thicknesses of the layers of these two charge components in different annular zones of equal size, as well as by shaping the initial stockline in such a way as to keep the ore-bearing materials from moving over the surface of the stock and falling into the peripheral zone of the top of the furnace.