关键词: 布料溜槽, 磨料磨损, 抗磨损, 结构设计

Abstract: The structure of distributing chute in blast furnace was designed and optimized to improve the wear resistant performance. Based on the characteristics of the burden motions and the chute wear conditions, the combination of the burden accumulation liner and the smooth liner was applied. Then the buffer effects of the piled burden layer cushions with different thicknesses were simulated by using discrete element method, and the parameters of the chute liner were optimized to match the burden charging operations. The results show that the abrasive wear is the main cause of the chute wear failure, the burden layer piled at the bottom of the chute may effectively disperse the burden impacts on the chute and reduce the abrasive wear, and plied burden thicknesses of no less than 60mm are recommended. The burden piled at the bottom of the optimized chute liner increases 32.13%, and the total burden passing through the chute may increase 15.5%.  

Key words: distributing chute, abrasive wear, wear resistance, structure design