摘要
辊式磁选机对中强磁性矿物分选多为经验式分选,不同磁系磁场特性与对应磁选矿物基本物性(密度、比磁化率)间的相互关系并无探讨。基于MagNet软件模拟辊式磁选机单环磁系、四级拼接磁系(无轭铁)、八级拼接磁系(有/无轭铁)的磁力线及磁感应强度分布情况,得出各磁系磁场沿辊表周向变化趋势及磁感应强度随分选行程变化函数关系;考察了单元磁性颗粒在力平衡条件下其密度同比磁化率的比值与各磁系磁感应强度函数关系,综合分析得出不同磁系类型下矿物的分选标准。对辊式磁选机常用磁系磁场特性分析,为选择合适的辊式磁选机进行中强磁性矿物的高效分选提供基础理论指导。
Roll magnetic separators are blandly used to separate moderate and strong susceptibility minerals, but the correlation between the magnetic field characteristic of different magnetic system and the characteristics （density and per magnetic susceptibility） of minerals is rarely discussed. The paper simulated the magnetic field lines distribution and magnetic induction intensity of different magnetic system, including： single ring prototype, four - magnetic splicing poles prototype without yoke, eight-magnetic splicing poles prototype with and without yoke. The function between the magnetic induction intensity and separation distance was given. The function between ratios of the density and magnetic susceptibility of single magnetic particle, and the magnetic field strength of different magnetic system was studied. By comprehensive analysis, the minerals separation standard corresponding to magnetic system prototype was obtained.The magnetic field characteristics of roll magnetic separators with different magnetic system were analyzed, the results could provide basic theoretical guidance for the selection of a suitable roll magnetic separator to efficiently separate moderate and strong magnetic minerals.
出处
《矿业研究与开发》
CAS
北大核心
2013年第3期96-99,共4页
Mining Research and Development
基金
教育部高等学校博士学科点专项科研基金(20114116110005)
关键词
辊式磁选机
磁系
磁力线
磁感应强度
分选行程
Roll magnetic separator, Magnetic system, Magnetic force line,magnetic induction intensity,Separation distance
