磨矿介质对两种碳酸盐浮选的影响

采用钢球和氧化锆球两种球介质,研究了磨矿介质对菱锌矿和菱镁矿表面性质及油酸钠浮选体系中浮选回收率的影响。研究结果表明,在油酸钠浮选体系中,采用氧化锆球介质磨矿,其磨矿产品的浮选回收率大于钢球介质磨矿的浮选回收率。pH试验结果表明,pH=9时,此时两种矿物浮选回收率最高,氧化锆球介质湿磨菱锌矿和菱镁矿的浮选回收率分别为90.19%和89.66%,而两种矿物钢球介质湿磨的浮选回收率分别为73.89%和69.64%。随着浮选槽中油酸钠浓度的增加,两种矿物浮选回收率逐渐增加,油酸钠用量为9×10-5mol/L时,菱锌矿和菱镁矿氧化锆球介质湿磨浮选回收率分别为98.15%和96.94%,而钢球介质湿磨的浮选回收率分别为97.82%和84.66%。

EFFECT OF GRINDING MEDIUM ON THE FLOTATION OF TWO CARBONATES

The effect of grinding medium on calamine and magnesite flotation using sodium oleate as collector was investigated.Two different grinding media were used,including steel balls and zirconia balls.It is showed that the grinding medium evaluated significantly affected the flotation of calamine and magnesite.For the minerals a lower flotation rates was obtained ground with steel balls.It is shown that the recovery of calamine and magnesite is highest in pH9,with recovery of 90.19% and 89.66% respectively grinding with zirconia balls and recovery of 73.89% and 69.64% grinding with steel balls.The recovery of two minerals is increased with the increase of collector dosage.The recovery of calamine and magnesite is 98.15% and 96.94% respectively grinding with zirconia balls in the collector dosage of 9×10-5mol/L,and the recovery is 97.82% and 84.66% respectively grinding with steel balls.