捕收剂作用下煤和矿物对浮选机理及效果的影响

Influence of coal and minerals on the flotation mechanism in the presence of collectors

为了提高细粒煤浮选效率,降低浮选过程中药剂消耗量大等问题,改善细粒煤分选效果,本文采用了几种常见的捕收剂,作用于2种不同变质程度不同氧化程度的煤炭,通过细粒煤反浮选试验及红外光谱实验,探究了捕收剂对煤及矿物质的作用机理,具有降低浮选设备能耗,提高浮选效率的重要意义。实验结果表明,不同捕收剂作用下,高岭石浮选效果不佳,且药剂消耗量较大;酸性条件下高岭石和石英浮选效果好,弱碱性条件下方解石浮选效果好;捕收剂与煤以物理吸附的方式结合。

In order to improve the flotation efficiency of fine-grained coal, reduce the consumption of chemicals in the flotation process and improve the effect of fine-grained coal sorting, with several common traps, acting on two kinds of coal with different degrees of oxidation and different degrees of deterioration, the action mechanism of traps on coal and minerals was investigated, which can reduce the energy consumption of flotation equipment and improve the flotation efficiency through fine-grained coal reverse flotation test and infrared spectroscopy experiment. The importance of the experimental results showed that under the effect of different trapping agents, kaolinite flotation was poor and the consumption of chemicals was large;kaolinite and quartz flotation was good under acidic conditions and calcite flotation was good under weak alkaline conditions;the trapping agent was combined with coal by physical adsorption.