ACHIEVEMENT OF THE REDUCING EROSION FOR THE INVESTIGATION OF TROUGH BOTTOM ANGLE IN THE SEMIPOOLING TYPE MAIN TROUGH

摘要

Relation between the trough bottom angle and the erosion amount (speed) was found by the investigation of the trough bottom angle to reduce the erosion amount for the semi pooling type main trough. Number of molten pig iron tapping could be increased and the stable life could be achieved by controlling the slope trough bottom angle of the blast furnace.