SWING CHUTE IN BELL-LESS TYPE FURNACE TOP CHARGING APPARATUS FOR BLAST FURNACE

摘要

PROBLEM TO BE SOLVED: To perform proper distribution of charging material such as the stability of piling shape of raw materials at the layer top in a blast furnace and the localization of piling position of a specific raw material, without needing the drastic facility investment and without causing the over-flowing and the clogging of charged raw materials.;SOLUTION: A swing chute 11 for bell-less type furnace top charging apparatus in the blast furnace, is constituted with two portions of a basic end side portion 12 having groove type cross-sectional face opened at the upper part and uniform shape and size of the cross-sectional face, and a tip end side portion 13 having gradually smaller cross-sectional face than this basic end side portion. The tip end side portion of the swing chute has a part at an elliptic shape in the cross sectional face and the radius R2 in the vertical direction of the above elliptic shape at the tip end of swing chute is smaller than the radius R1 in the horizontal direction. In this invention, the load to the swing driving device can be reduced and the effect of the restraint of dropping width is obtained without causing the over-flowing and the clogging of the charged raw materials and regardless of inclining angle of the swing chute, and this swing chute can contribute to proper distribution of charging material.;COPYRIGHT: (C)2008,JPO&INPIT