论文部分内容阅读
这项报告描述的是在调浆阶段加给矿浆的能量的多少,对金矿浮选细粒的回收率、品位和动力学指标的影响。试验中所用起泡剂有三种:Dowfroth 250,松油和MIBC(甲基异丁基甲醇),捕收剂是戊基黄药。试验所得最佳结果是回收率提高24%,精矿品位提高50%,采用了高强度调浆,起泡剂是Dowfroth 250。在低或中强度调浆时(0.5～1.5kWh/m~3矿浆),细粒矿物将会粘附在粗粒矿物上,这时回收率的提高依赖于对载体(在此为黄铁矿)和自生载体颗粒的混合捕收,而在高强度调浆时(2～3kWh/m~3矿浆),细粒金矿颗粒会自己聚团。这些现象都在对浮选速率、真实浮选指标(实际矿粒-气泡附着所实现的浮选)和夹带颗粒数量的测量中得到证实。试验中还讨论了调浆的方式和机理。
This report describes the amount of energy added to the slurry at the slurrying stage and its effect on the flotation recovery, grade and kinetic parameters of the gold ore. There are three foaming agents used in the test: Dowfroth 250, pine oil and MIBC (methyl isobutylmethanol), and the collector is pentyl xanthate. The best results obtained were a 24% increase in recovery, a 50% increase in concentrate grade, and the use of high-strength mortar, with the foaming agent Dowfroth 250. At low or medium strength slurries (0.5-1.5 kWh / m 3 slurry), fine-grained minerals will adhere to the coarse-grained minerals and the increase in recovery will depend on the loading of the support, pyrite ) And self-supporting carrier particles, while in high-strength slurrying (2 ~ 3 kWh / m ~ 3 pulp), fine-grained gold particles agglomerate themselves. These phenomena are corroborated by measurements of flotation rate, true flotation indices (flotation achieved with actual mineral particles-bubble attachment) and the amount of entrained particles. The experiment also discussed the method and mechanism of slurry mixing.