磨矿因素对黄药在硫化矿浮选过程中分布的影响

以硫含量差别较大的3种含硫的铁矿石和纯黄铁矿为试样,研究了乙基黄药和丁基黄药在矿石浮选过程中,磨矿细度、磨矿介质及后续的浮选充气对药剂分布的影响。结果表明,采用钢棒介质磨矿,矿石表面的黄药分布率低,不利于黄药在其表面的吸附,而采用瓷球介质磨矿,矿石表面的黄药分布率高,有利于黄药在其表面的吸附;充气有利于矿石吸附黄药,可以提高矿石表面的黄药分布率,但采用瓷球介质磨矿后,充气对矿石吸附黄药的影响较小;磨矿介质对于纯黄铁矿吸附黄药的影响较小。

Effect of grinding factors on distribution of xanthate in flotation process of sulfide ore

The factors affecting the distribution of two xanthate in the flotation process of sulfide ore such as grinding medium and aeration in flotation were analyzed. Using three kinds of iron ore with different sulfur content and single mineral of pyrite as samples, the effects of aeration, grinding fineness and grinding medium on the distribution of two kinds of xanthate in the ore flotation process were studied. The results show that grinding with steel rod medium, the distribution rate of xanthate on the surface of ore is low, which is not conducive to the adsorption of xanthate on its surface. When Using porcelain ball as grinding medium, the distribution of xanthate on the surface of the ore is high, which is beneficial to the adsorption of xanthate on its surface. Aeration is favorable to the adsorption of xanthate by ore, which can increase the distribution rate of xanthate on the surface of ore. However, after grinding with porcelain ball medium, the effect of aeration on the adsorption of xanthate on ore is small. Grinding medium has little effect on the adsorption of xanthate by single mineral of pyrite. This research can provide a theoretical basis for the subsequent improvement of the flotation indexes of sulfide ore.