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起泡剂在一系列浮选槽的精矿中的分布率以及捕收剂在有价矿粒上的吸附是很重要的,因为它们决定着泡沫结构和浮选性能。需要明确这一问题,以便确立更好的药剂添加策略。测量工业浮选回路试样中的起泡剂浓度的方法,包括动力学表面张力测量,均已证明是不太确切的,因为使用的是低浓度且受疏水矿粒影响。本研究中制定了一个实验室规模测量未吸附药剂浓度的方法。对一个工业硫化矿石进行了批量浮选试验,通过测量剩余在从精矿和尾矿所取的过滤后的液体试样中的浓度,从而测出了捕收剂(SIBX)和起泡剂(Dowfroth200)在固体矿粒上的吸附量。用紫外分光光度法和TOC分析法进行了分析测试,结果发现,当存在有SIBX时2min后溶液中20%的起泡剂消失了,63%的SIBX吸附在固体矿粒上,这些结果还表明,增加SIBX的初始浓度和延长调整时间得到了较高的精矿品位。
The rate of blowing agent in the concentrate of a series of flotation cells and the adsorption of collectors on the valuable minerals are important because they determine the foam structure and flotation performance. This issue needs to be clarified in order to establish a better strategy for drug addition. Methods for measuring the concentration of foaming agent in industrial flotation circuit samples, including kinetic surface tension measurements, have all proved less certain because of the low concentration used and the effects of hydrophobic mineral particles. In this study, a method for the measurement of non-adsorbed drug concentration on a laboratory scale was developed. An industrial sulfide ore was subjected to a batch flotation test in which the concentration of collector (SIBX) and foaming agent (SIBX) was measured by measuring the concentration remaining in the filtered liquid sample taken from the concentrate and tailings Dowfroth 200) on solid mineral particles. Analysis by UV spectrophotometry and TOC analysis showed that 20% of the foaming agent disappeared in 2% of the solution in the presence of SIBX and 63% of SIBX was adsorbed on the solid mineral particles. These results also indicate that , Increasing the initial concentration of SIBX and prolonging the adjustment time resulted in higher concentrate grade.