硼镁石浮选特性研究

通过对硼镁石单矿物纯度、粒度、表面特性的测试以及单矿物的浮选试验,研究了六偏磷酸钠对磁铁矿、硼镁石和蛇纹石单矿物的可浮性影响.结果表明,在油酸体系中,六偏磷酸钠的浓度小于0.25×10-4mol/L时可抑制磁铁矿,浓度增大后对磁铁矿抑制作用减弱;在十二胺体系中,六偏磷酸钠的浓度小于0.8×10-4mol/L时对磁铁矿抑制作用不大,浓度增大后抑制作用明显.六偏磷酸钠在油酸体系中,对硼镁石具有抑制作用,在十二胺体系中,对硼镁石没有抑制作用.六偏磷酸钠在油酸浮选体系和十二胺体系中,对蛇纹石可浮性的影响都不明显.同时,对淀粉和Ca2+对硼镁石的抑制作用也进行了探讨.

Study on the Characteristic of Camsellite Flotation

The effect of (NaPO3)6 on the flotation performance of magnetite, camsellite and serpentine was investigated through the testings of purity, grain size and surface characteristics of single-block camsellite and its floatation experiments. The results showed that in the oleic acid system the (NaPO3)6 concentration is a critical point, i.e., the (NaPO3)6 suppression effect on magnetite is effective or ineffective if the concentration is lower or higher than 0.25 × 10^-4 mol/L, respectively, while in the lauryl amine system the suppression effect is unobvious or obvious if the concentration is lower or higher than 0.8 × 10^-4 mol/L, respectively. As to the camsellite, (NaPO3)6 is suppressible to it in oleic acid system but insuppressible in laural amine system. And (NaPO3)6 has no obvious effect on the floatability of serpentine in either oleic acid or lauryl amine systems. Moreover, the suppression effects of starch and Ca²⁺ on camsellite are discussed.