矿粒所受磁力计算公式的几个问题探讨  

Some Problems in Calculation Formula of Mineral Particle Magnetic Attraction

作　　者：徐建成[1] 徐建民[2] 

机构地区：[1]首都师范大学物理系,北京100037 [2]北京矿冶研究总院,北京100044

出　　处：《有色金属》2005年第1期77-80,共4页Nonferrous Metals

摘　　要：推导在磁场强度与其梯度的夹角为任意值时都适用的计算矿粒所受磁力的公式,指出现有矿粒所受磁力计算公式证明中的问题。以实际磁选机里特殊点上磁力的大小为据说明某计算矿粒所受磁力的公式与实际情况相矛盾。The calculation formula about magnetic attraction for mineral particle, that is adaptive to the arbitrary included angle between magnetic field intensity and its gradient, are derived. The problems in existing proof on the calculation formula about magnetic attraction for mineral particle are pointed. On the basis of the magnitude of the magnetic attraction on the special point in realistic magnetic separators, some calculation formula about magnetic attraction for mineral particle in contradiction with practice is indicated.

关 键 词：计算公式 证明 实际 特殊点 问题探讨 大小 夹角 磁力 推导 梯度 

分 类 号：TG143.5[一般工业技术—材料科学与工程] G633[金属学及工艺—金属材料]