柴油乳化与微乳化及其在煤泥浮选中的应用

Preparation and application of emulsified and micro-emulsified collectors in coal slime flotation

针对常规捕收剂在矿浆中分散效果差、用量大的缺点,通过单因素试验和拟三元相图的绘制,确定乳化柴油和微乳化柴油的最佳配方,并在此基础上进行了煤泥浮选试验。试验结果表明:微乳化柴油的粒度更小,平均粒度为0.065 mm,且分布均匀,分散效果、稳定性更好;对于与试验煤样性质相同的煤泥,在浮选指标相近的情况下,采用微乳化柴油作为捕收剂时,煤泥浮选速度更快,更节省浮选药剂。

Insufficient dispersion in pulp and high consumption are the drawbacks of conventional collec- tors, if used. The optimum formulae for the preparation of emulsified and micro-emulsified collectors are determined by single-factor experiment and pseudo-ternary phase diagram, and fine coal flotation test is made using the collectors thus prepared. Test result indicates that： the micro-emulsified diesel is much fi- ner in size （0. 065 mm on average） and exhibits a higher stability for its uniform distribution and disper- sion in pulp ; and for flotation of the fine coal which is identical to the test sample in property, if the simi- lar flotation performance is expected, the use of micro-emulsified diesel can lead to higher flotation rate and lower consumption of flotation reagents.