Abstract
Ore samples, collected from a lead-zinc oxide ore deposit in Sichuan province, China, are very difficult to treat with such characteristics as low grade, uneven mineral particle distribution and high containing of slime. It is very difficult to separate the lead minerals and zinc minerals, especially for the recovery of zinc oxide minerals. On the basis of flotation characteristics study to gangue and useful minerals, author studied flotation behavior of lead-zinc oxide ore with new collectors (KM21 and YO-1), and carried out the experiment on separating useful minerals from gangue minerals. Test results showed, a lead concentrate with a grade of 59.78 percent and a recovery of 86.49 percent and a zinc concentrate with a grade of 48.53 percent and a recovery of 84.92 percent were obtained from the crude ore with the oxidation rate of 74.34 percent and 89.30 percent of lead and zinc respectively, which realized the high efficient flotation separation of the refractory lead-zinc oxide ores.
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