煤炭6mm筛分动力学研究
Study on screening kinetics of coal 6 mm classification
周青 1刘碧连 1余姣 1丁大海2
作者信息
- 1. 六盘水师范学院矿业与机械工程学院,贵州六盘水 553004
- 2. 山西约翰芬雷设计工程有限公司,山西太原 030024
- 折叠
摘要
为了探索6mm分级效率与筛分时间的关系,利用回归分析方法拟合了小于6mm和大于6 mm粒级动力学模型的参数,进而获得计算筛分效率的公式,并利用标准偏差、相关系数判断模型拟合精度.结果表明:小于6 mm粒级实际与计算正配率的误差较大,最大误差超过10％;大于6 mm粒级实际与计算正配率的误差较小,最大误差小于0.5％;计算筛分效率和实际筛分效率的误差大小主要取决于小于6 mm粒级正配率的误差.
Abstract
To explore the relationship between the 6 mm classification efficiency and time,the parameters of the dynamics models of＜6 mm and＞6 mm size were fitted by regression analysis method,and then the formula for calculating the sieving efficiency was obtained.The fitting accuracy of the model was judged by standard deviation and correlation coefficient.The results show that the error of actual and calculated normal ratio of＜6 mm particle size is large,with the maximum error exceeding 10％.The error of actual and calculated normal ratio of＜6 mm particle size is small,and the maximum error is less than 0.5％.The error between the calculated and the actual screening efficiency is mainly determined by the error of the size matching ratio＜6 mm.
关键词
选煤厂/正配率/筛分效率/筛分动力学Key words
coal preparation plant/distribution rate/screening efficiency/screening kinetics引用本文复制引用
基金项目
大学生创新创业训练计划(202110977007)
六盘水师范学院卓越人才培养计划(LPSSYzyjypyjh202001)
六盘水师范学院教学改革项目(LPSSYjg2016)
出版年
2024
NETL
NSTL
万方数据