摘要
为了给高梯度磁选机聚磁介质的选择提供参考,以国外某微细粒赤铁矿石和广东某褐铁矿石的强磁扫选尾矿为对象,在SSS-II型水平磁场周期式高梯度磁选机上研究了棒状聚磁介质的形式和直径对高梯度磁选效果的影响。介质形式试验结果显示：表面具环状尖突起的异形棒介质与普通圆棒介质相比,可使国外矿样的精矿回收率提高3.17-6.17个百分点,说明异型棒介质对磁性颗粒的吸引力更强。介质直径试验结果显示：Ф4 mm异型棒介质与Ф3 mm和Ф5 mm异型棒介质相比,可使国外矿样的精矿回收率提高1.18-5.52个百分点,使广东矿样的精矿回收率提高2.14-2.98个百分点,说明适当增大介质直径有利于磁性物的回收,但介质直径过大时反而会降低对磁性物的捕捉能力。
In order to provide a reference for selecting the magnetic media of high gradient magnetic separator,and taking a micro-fine hematite at overseas and a scavenging tailing of a Guangdong limonite as objects,effect of the rod medium shape and its diameter on performance of high gradient magnetic separation are investigated with the aid of SSS-II type horizontal magnetic periodical high gradient magnetic separator. Medium shape tests result showed that： compared with the ordinary cylindrical rod medium,special-shaped rod media with circle protruding surface makes the concentrate recovery increased by 3. 17% - 6. 17% for the overseas samples,which indicated that the special-shaped rod media has a stronger capture effect on magnetic particles. The medium diameter test results showed that compared with special-shaped rod media of Ф3 mm and Ф5 mm in diameter,the one of Ф4 mm in diameter increased the concentrate recovery rate by 1. 18% - 5. 52% for the overseas samples,and by 2. 14% - 2. 98% for Guangdong samples. All these indicated that appropriately increasing the media diameter was in favor of recovery of magnetic particles,but oversize diameter weakened the ability to capture the magnetic materials.
出处
《金属矿山》
CAS
北大核心
2013年第12期105-107,138,共4页
Metal Mine
基金
国家重点基础研究发展计划(973计划)项目(编号:2012CB724201)
关键词
高梯度磁选
圆棒介质
异型棒介质
介质直径
精矿回收率
High gradient magnetic separation
Cylindrical rod medium
Special shaped rod medium
Medium diameter
Concentrate recovery
作者简介
李文博（1985-），男，博士研究生，110819辽宁省沈阳市和平区文化路3号巷11号。
