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对于分选铁英岩铁矿石以生产球团矿给料来说,阳离子反浮选石英是一种最重要的方法。选矿工作者在着手解决这一工艺过程时,常面临着下述两个难题:1)粗粒的石英不能很好地与胺类捕收剂发生反应;2)细粒的氧化铁颗粒不能很好地被胶凝化的玉米淀粉所抑制。本文探讨了解决第一个难题的一些措施。在常规的机械搅拌式浮选机中进行实验室规模的试验,以研究在三种pH值和四种不同用量的醚单胺和醚二胺捕收剂的条件下,不同粒度范围石英的浮选性能。可以看出,在浮选中等粒度和粗粒的石英时,醚二胺捕收剂更为有效,而在浮选细粒的石英时则是醚单胺的捕收效果更好。并且还发现,浮选矿浆中有一定数量的细粒石英的存在能提高中等粒度和粗粒的石英的浮选效果。
Cationic reverse flotation of quartz is one of the most important methods for sorting iron ore from iron ore to pellet feed. Mineral processing workers are often faced with the following two problems in their efforts to address this process: 1) Coarse quartz does not react well with amine collectors; 2) Fine iron oxide particles do not Goodly inhibited by gelatinized corn starch. This article explores some of the solutions to the first problem. Laboratory scale experiments were conducted in a conventional mechanical agitated flotation machine to investigate the effect of different size ranges of quartz floats at three particle sizes with different pH values and four different levels of ether monoamine and ether diamine collectors Selected performance. It can be seen that ether diamine collectors are more effective in the flotation of medium-grained and coarse-grained quartz, while ether monoamines are more effective in the flotation of fine-grained quartz. It has also been found that the presence of a certain amount of fine-grained quartz in the flotation slurry enhances the flotation of medium- and coarse-grained quartz.