Abstract: According to the Pb-Zn ore natures in Ganluo county, Sichuan province, such as high oxidized degree, unevenly mineral particle distribution, and easy pelitization, the processing of lead floating by sulfuration and zinc float by desliming has been adopted with the assistance of high-efficient collector S-8 for lead flotation and amines combined collector A-9 on oxide zinc flotation to perfectly separate lead and zinc. The experimental results showed that lead concentrate with Pb grade of 63.40% and Zn grade of 2.53% at a lead recovery of 76.96%, and Zn concentrate with Zn grade of 38.31% and Pb of 0.87% at a Zn recovery of 81.83% were obtained. 

Key words: Oxidized lead-zinc ore, Desliming, Collector S-8, Collector A-9