Beneficiation study of Eshidiya phosphorites using a rotary triboelectrostatic separator  

作　　者：TAO Daniel AL-HWAITI Mohammad 

机构地区：[1]Department of Mining Engineering,University of Kentucky,Lexington 40506-0107,USA [2]Environmental Engineering Department,Faculty of Engineering,Al-Hussein Bin Talal University,Ma'an,Jordan

出　　处：《Mining Science and Technology》2010年第3期357-364,371,共9页矿业科学技术（英文版）

基　　金：the staff of the Jordan Phosphate Mines Company for supplying the sample used in the present work.

摘　　要：This study was performed to investigate the feasibility of applying a Rotary Triboelectrostatic Separator（RTS） to the beneficiation of Eshidiya phosphate minerals.RTS separation tests were carried out on phosphatic bed A_1,phosphatic bed A_3 and slime samples.The bed A_1 and slime samples were tested without desliming.Two sets of tests were performed using the A_3 sample： one was performed without desliming and the other with the A_3 sample deslimed.RTS separation tests as initially performed on the bed A_1 and slime samples gave products that had essentially the same P_2O_5 content.This indicated that adsorbed clay particles on the phosphate surface are responsible for the poor separation of un-deslimed phosphates.Better triboelectrostatic separation was observed with the undeslimed A_3 phosphate sample;these tests resulted in a highest product grade of 26%P_2O_5.The deslimed A_3 sample showed far more effective separation than the undeslimed A_3 one.In fact,a concentrate of 34%P_2O_5 was obtained from the triboelectrcstatic separation of deslimed A_3.The results indicate that with deslimed A_3 P_2O_5 recovery was about 65%for a concentrate of 28%P_2O_5 and about 45%for a concentrate of 30%P_2O_5.These results clearly show the importance of desliming for effective beneficiation of phosphate by the RTS.A more efficient separation can be expected from optimized operating conditions and circuit configuration.这研究被执行调查把一个旋转 Triboelectrostatic 隔板(RTS ) 用于 Eshidiya 磷酸盐矿物质的 beneficiation 的可行性。RTS 分离测试在磷酸的床 A1，磷酸的床 A3 和软泥样品上被执行。没有 desliming，床 A1 和软泥样品被测试。测试的二个集合用 A3 样品被执行：没有 desliming 和其它，一个人与 A3 样品 deslimed 被执行。当开始在床 A1 上表现了，软泥样品给了实质上有一样的 P2O5 内容的产品， RTS 分离测试。这显示磷酸盐表面上的吸附的泥土粒子为 un-deslimed 磷酸盐的差的分离负责。更好的 triboelectrostatic 分离与 undeslimed A3 磷酸盐样品被观察；这些测试导致了 26% P2O5 的一个最高的产品等级。deslimed A3 样品比 undeslimed A3 那件显示出更多的有效分离。事实上，一 34% P2O5 的 concentrate 从 deslimed A3 的 triboelectrostatic 分离被获得。结果显示与 deslimed A3 P2O5，恢复是大约 65% 为一 28% P2O5 并且大约的 concentrate 45% 为一 30% P2O5 的 concentrate。这些结果清楚地由 RTS 为磷酸盐的有效 beneficiation 显示出 desliming 的重要性。更有效的分离能从操作条件和电路配置优化被期望。

关 键 词：BENEFICIATION triboelectrostatic separation PHOSPHATE Eshidiya JORDAN 

分 类 号：TD87[矿业工程—非金属矿开采]