RAW MATERIAL DISTRIBUTING AND ADJUSTING DEVICE IN TOP CHARGER FOR BLAST FURNACE

摘要

PURPOSE:To make possible the charging of the raw material in a hopper into a blast furnace always with the good sequence by forming a raw material charger at the top of a blast furnace of two stages of upper and lower hoppers, forming the lower part of at least one thereof into an inverted circular cone shape and providing a circular cone-shaped raw material passage regulating valve which is vertically movable into the central part thereof. CONSTITUTION:The bell-less type raw material charger at the top of the blast furnace is made into two stages of the upper and lower center feed types and either one thereof is constructed into the hopper 1 which is cylindrical in the upper and lower parts and is formed to the inverted circular conical shape in the intermediate part. The circular cone-shaped raw material passage regulating valve 17 is vertically movably installed into such inverted circular cone shape to form a raw material passage 19 between the same and the inside wall surface of the inverted circular cone part. The raw materials such as iron ore and coke are charged with the good sequence by a conveyer 4 in the position apart from the central part while the hopper 1 is rotated. The valve 17 is vertically moved according to the sizes of the raw materials during this time to adjust the spacing of the passage for the raw materials from l1 to l2. The uneven presence of the various raw materials in the blast furnace by the grain sizes thereof is thus eliminated and the raw materials are charged with the good sequence into the furnace.