Effect of galvanic contact on the flotability of galena in the presence and absence of a collector

• Published in: International journal of mining science and technology 2012-09, Vol.22 (5), p.629-632
• Main Authors: Eslami Andargoli, M.B., Jannesar Malakooti, S., Doulati Ardejani, F., Abdollahi, H.
• Format: Article
• Language: English
• Subjects: Collector; Electrochemical; Flotation; Galena; Galvanic interactions; 化学环境; 可浮性; 实验室规模; 方铅矿; 浮选机; 电接触; 连二亚硫酸钠; 集电极
• ISSN: 2095-2686
• DOI: 10.1016/j.ijmst.2012.08.006

In this paper,the effect of various electrochemical environments in the galena flotation is investigated.The electrochemical environments consisted of a ball mill for grinding of galena ore and a Denver flotation cell for flotation of galena in the laboratory scale.In order to achieve the maximum recovery with sodium hyposulfite,the concentrations of 0.06 and 0.12 M of air and nitrogen gases have been used to control the pulp potential in the Denver flotation cell.The galena sample was from the ＇＇Era mine＇＇ which is located in the Kiyasar area,north of Iran.This mine contains：Galena（PbS） at least 22%,Fluorite（CaF 2） 73.37%,Quartz（SiO 2） 2.54% and other minerals such as Cerussite（PbCO 3） and Kaolinite（Al 2 Si 2 O 5（OH） 4）.Flotation of Galena was conducted in a 0.12 M of sodium hyposulfite solution.It was found that the amount of recovery by this process was 85% and 63% in the presence and absence of potassium amyl xanthate（KAX） and at an estimated potential of 280 to 350 mV respectively while the recovery was 70% and 52% at an approximate potential of 175 to 210 mV in water in the presence and absence of collector（KAX）.