Investigation into wall stress in blast furnace by Discrete Element Method

• Main Authors: Chen, Chih-wei, 陳志瑋
• Other Authors: Tsai, Chien-Hsiung
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/82112847955986053297

碩士 === 國立屏東科技大學 === 車輛工程系所 === 103 === The gas distribution in the lumpy zone of blast furnace is mainly determined by the burden layer structure. To maintain blast furnace working with reducing abrasion of blast furnace wall, Designers hope to master the loss and abrasion of the generated with charging to blast furnace wall. The geometry shape and O/C control conditions as a design reference.Owing to difficulties in the measurement, a simulation model by discrete element method (DEM) was established in this study to analyze the blast furnace charging to wall of the mode with different operation conditions, The charge to blast furnace wall will in two locations have a greater stress,First the furnace body and belly of turning point,Second the furnace belly and bosh of turning point. The study displayed the furnace body angle increases and stress increase；The furnace bosh angle increases and stress decrease；The furnace waist length stress almost identical. The study also indicate the greater the stress, the faster consumption of charging. Eventually, explore O/C stress sources with weight and extrusion of iron ore.