文档介绍：I 铜铅锌硫化矿浮选动力学研究摘要铜铅锌多金属硫化矿有效分选一直是多金属硫化矿浮选的难题之一,一直以来不少选矿学者致力于铜铅锌多金属硫化矿浮选热力学的研究,而在成矿过程中,往往是热力学性质相近的矿物共生在一起,这就为分离它们造成极大的困难,要分离它们,除了利用它们的热力学性质的差异,还应充分重视动力学性质的差异。本文对铜铅锌硫化矿浮选动力学行为进行了系统的分析与研究。本文分别讨论了矿浆pH值及电位、捕收剂用量、浮选矿浆浓度、浮选机转速、矿物粒度分布及闪锌矿抑制剂用量等因素对铜铅锌硫化矿浮选动力学行为的影响,研究拟合出了黄铜矿、方铅矿及闪锌矿单矿物的浮选动力学模型;并通过对人工模拟矿的浮选动力学研究进一步验证了单矿物试验结果。对黄铜矿、方铅矿及闪锌矿单矿物浮选动力学研究表明在选取最佳浮选条件下,可以使得三种单矿物浮选的浮选速率常数大小排列顺序依次为:k 黄铜矿>k 方铅矿>k 闪锌矿;且拟合所得黄铜矿、方铅矿及闪锌矿单矿物浮选动力学模型依次为: 1 1 1 t e t ??????? ????????黄铜矿 1 1 1 t e t ??????? ????????方铅矿 1 1 1 t e t ??????? ????????闪锌矿(式中ε为回收率,t浮选时间) 对人工模拟矿浮选试验结果进行拟合,所得其黄铜矿、方铅矿及闪锌矿的浮选动力学模型依次为: 1 1 1 t e t ??????? ????????黄铜矿 1 1 1 t e t ??????? ????????方铅矿 1 1 1 t e t ??????? ????????闪锌矿(式中ε为回收率,t浮选时间) 关键词: 浮选动力学;浮选动力学模型;浮选速率常数;铜铅锌硫化矿 II Study on Flotation ics of Copper-Lead-Zinc SulphidOre Abstract The seperation of Copper-Lead-Zinc Polymetallic ore is a challenge for the froth flotation of sulfide minerals. A lot of scholar has researched the flotation thermodynamics, But in the process of mineralization, the minerals whose thermodynamics characteristic is similar always symbiosis together, sothe seperation for Copper-Lead-Zinc Polymetallic ore is difficulty. We must pay attentation to the differences of ics characteristic besides thermodynamics characteristic of Copper-Lead-Zinc Polymetallic order to research the ics characteristic of chalcopyrite, galenite and sphalerite, A series of experiments are carried out. The effects of pH, dosage of collector, concentration of pulp, rotate speed of flotation machine, size distribution and dosage of depressor of sphalerite on ics of chalcopyrite, galenite and sphalerite have been researched, The ics models of pure chalcopyrite, galenite and sphalerite ore have been fitted. The results of research of