摘要
厘清石油焦物性及接触参数对于理解料罐内石油焦下降运动规律至关重要。采用斜板碰撞实验技术测定了石油焦与钢板、石油焦与硅砖及石油焦之间的恢复系数均值分别为0.400、0.595、0.608。通过斜面抬升法测定了石油焦与钢板、石油焦与硅砖的静摩擦系数分别为0.368、0.599。基于固定漏斗实验法与离散元仿真技术,采用Box-Behnken实验设计方法标定了石油焦颗粒之间的静摩擦系数为0.415,石油焦与钢板、石油焦与硅砖及石油焦颗粒之间的滚动摩擦系数分别为0.036、0.050、0.042。漏斗物理实验和仿真计算获得的堆积角误差<0.5%,研究可为罐式炉内颗粒运动行为提供理论及数据支撑。
Clarifying the physical properties and contact parameters of petroleum coke was crucial for understanding the descent motion of petroleum coke in the vertical shaft calciner.In this study,the inclined plate collision experiment technique was used to determine the average restitution coefficients of petroleum coke with steel plate,silica brick,and between petroleum coke,which were 0.400,0.595,and 0.608,respectively.The static friction coefficients between petroleum coke and the steel plates,petroleum coke and silica bricks were determined to be 0.368 and 0.599,respectively,using the inclined plane lifting method.Based on the fixed funnel experiment method and discrete element simulation technology,using the Box-Behnken experimental design method to calibrate the static friction coefficients between petroleum coke particles were 0.415,as well as the rolling friction coefficients of petroleum coke with steel plate,silica brick,and petroleum coke particles were 0.036,0.050,and 0.042,respectively.The error in the stacking angle obtained from the funnel physical experiment and simulation calculation was less than 0.5%.This research can provide theoretical and data support for the particle movement behavior in the vertical shaft calciner.
作者
钟劲龙
李静
黄金堤
李明周
ZHONG Jinlong;LI Jing;HUANG Jindi;LI Mingzhou(School of Information Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;School of Metallurgical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China;Jiangxi Provincial Key Laboratory of High-Performance Steel and Iron Alloy Materials,Ganzhou 341000,China)
出处
《有色金属工程》
CAS
北大核心
2024年第11期145-153,共9页
Nonferrous Metals Engineering
基金
国家自然科学基金资助项目(52004112)
江西省自然科学基金资助项目(20242BAB25251)
江西理工大学清江青年英才支持计划资助项目(JXUSTQJYX2020016)。
关键词
石油焦
堆积角
漏斗实验
离散元法
参数标定
petroleum coke
stacking angle
funnel experiment
discrete element method
parameters calibration
