采用自制实验室型逆流分选柱对褐铁矿型红土镍矿进行了预富集试验研究。结果表明,给矿流量200 m L/min(矿浆浓度为10%)、上升水流量250 m L/min、底流与溢流流量比1∶8时,底流产品中Cr品位为2.5%、Cr回收率为26.7%,溢流产品中Ni品位0.85...采用自制实验室型逆流分选柱对褐铁矿型红土镍矿进行了预富集试验研究。结果表明,给矿流量200 m L/min(矿浆浓度为10%)、上升水流量250 m L/min、底流与溢流流量比1∶8时,底流产品中Cr品位为2.5%、Cr回收率为26.7%,溢流产品中Ni品位0.85%、Ni回收率79%。使用商业软件Fluent针对逆流分选柱的上升水流量、底流-溢流流量比进行了流场模拟分析,结果表明,在与试验条件相同的参数下,增大上升水流量、减小底流与溢流流量比,可以获得较为理想的分选效果,这与试验结果体现的规律一致。逆流分选柱可以用于红土镍矿的重选预富集工作。展开更多
The floatability of andalusite and quartz was studied using sodium petroleum sulfonate as collector, being successfully applied in the real ore separation. The collecting performance on minerals was interpreted by mea...The floatability of andalusite and quartz was studied using sodium petroleum sulfonate as collector, being successfully applied in the real ore separation. The collecting performance on minerals was interpreted by means of zeta potential measurement and infrared spectroscopic analysis. The single mineral experiments showed that andalusite got good floatability in acidic pH region while quartz exhibited very poor floatability in the whole pH range. At pH 3, the presence of Fe3+ obviously activated quartz, causing the identical flotation behavior of the two minerals, and calcium lignosulphonate exhibited good selective inhibition to quartz. The real ore test results showed that andalusite concentrate with 53.46% Al2O3 and quartz concentrate with 92.74% SiO2 were obtained. The zeta potential and infrared spectroscopic analysis results indicated that chemical adsorption occurred between sodium petroleum sulfonate and andalusite.展开更多
文摘采用自制实验室型逆流分选柱对褐铁矿型红土镍矿进行了预富集试验研究。结果表明,给矿流量200 m L/min(矿浆浓度为10%)、上升水流量250 m L/min、底流与溢流流量比1∶8时,底流产品中Cr品位为2.5%、Cr回收率为26.7%,溢流产品中Ni品位0.85%、Ni回收率79%。使用商业软件Fluent针对逆流分选柱的上升水流量、底流-溢流流量比进行了流场模拟分析,结果表明,在与试验条件相同的参数下,增大上升水流量、减小底流与溢流流量比,可以获得较为理想的分选效果,这与试验结果体现的规律一致。逆流分选柱可以用于红土镍矿的重选预富集工作。
文摘The floatability of andalusite and quartz was studied using sodium petroleum sulfonate as collector, being successfully applied in the real ore separation. The collecting performance on minerals was interpreted by means of zeta potential measurement and infrared spectroscopic analysis. The single mineral experiments showed that andalusite got good floatability in acidic pH region while quartz exhibited very poor floatability in the whole pH range. At pH 3, the presence of Fe3+ obviously activated quartz, causing the identical flotation behavior of the two minerals, and calcium lignosulphonate exhibited good selective inhibition to quartz. The real ore test results showed that andalusite concentrate with 53.46% Al2O3 and quartz concentrate with 92.74% SiO2 were obtained. The zeta potential and infrared spectroscopic analysis results indicated that chemical adsorption occurred between sodium petroleum sulfonate and andalusite.
