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石墨浮选药剂,传统是用煤油作捕收剂,二号油作起泡剂,其中煤油是沸点在200～270℃的蒸馏产物,主要成分是含11～16个碳原子的烷烃。这些烷烃不完全是直链的,还有相当一部分是带支链的。根据理论,带支链的烷烃,色散力比同碳原子数的直链烷烃为小。我们用键电量详细地计算了各种烷烃证实了这点。因此除去煤油中带支链的烷烃,全部使用直链烷烃的煤油,将提高对石墨的捕收性能。从煤油中除去带支链烷烃的方法有分子筛、溶剂和尿素三种。工业上的液体石蜡就是这种从
Graphite flotation reagents, the traditional is the use of kerosene as a collector, two foaming agent, kerosene is the boiling point of 200 ~ 270 ℃ distillation products, the main component is 11 to 16 carbon atoms of alkanes. These alkanes are not completely linear and a significant proportion are branched. According to the theory, branched paraffins have a smaller dispersion force than linear paraffins with the same number of carbon atoms. This is confirmed by the detailed calculation of various alkanes using the bond charge. Therefore, the removal of kerosene with branched paraffins, all using straight-chain paraffins kerosene, will improve the collection performance of graphite. There are three methods for removing branched alkanes from kerosene: molecular sieve, solvent and urea. Industrial liquid paraffin is this from