磁介质单丝捕获赤铁矿的试验研究

Test study on capture of hematite via magnetic medium single wire

采用一种磁介质单丝捕获的试验方法,针对典型的弱磁性矿物——赤铁矿进行不同截面形状和直径磁介质单丝捕获试验研究,并与钛铁矿捕获结果进行对比分析。试验结果表明,相同条件下,磁介质单丝捕获量随磁感应强度提高而增加,随脉动冲次和矿浆流速增加而降低;圆柱形磁介质单丝捕获量大于矩形磁介质单丝捕获量,且捕获量随磁介质丝直径增大而增加;对赤铁矿和钛铁矿2种不同弱磁性矿物捕获规律相同,但捕获量随矿物比磁化率的增大而增加。

A capture method via magnetic medium single wire was used to conduct the test for the capture of hematite, a typical weak-magnetic mineral, via magnetic medium single wire with various cross-section and diameter, and the capture results was compared with that of ilmenite. The test results showed： at the same conditions, the captured mass via the magnetic medium single wire increased with the enhancement of the magnetic induction, and decreased with the increase in pulsation frequency and slurry flow rate; the captured mass via cylindrical magnetic medium single wire was more than that via rectangular ones, and rose with the increase in the wire diameter; the capture laws of hematite was the same as that of ilmenite, while the two were typical weak-magnetic minerals, and the captured mass rose with the increase in specific magnetic susceptibility of minerals.