STUDY OF FLOTATION OF Pb-Zn COMPLEX ORE FROM BOGOR AREA BY FROTH FLOTATION AND DIFFERENTIAL FLOTATION METHODS

• Main Author: HASBI FADHILAH (NIM : 12513058), ERZA
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26991
• Institution: Institut Teknologi Bandung

Lead (Pb) and zinc (Zn) are non-ferrous metals that are widely used in daily life. <br /> <br /> Lead is mostly produced from primary source, namely galena (PbS) and mostly <br /> <br /> associated with sphalerite. Effectiveness in the flotation process is required, such <br /> <br /> as appropriate collectors and appropriate flotation methods. In this study, we <br /> <br /> studied the effect of pH on the contact angle of galena, sphalerite and quartz <br /> <br /> minerals, the effect of pH and collector type on percent of recovery of lead, <br /> <br /> percent of recovery zinc, grade of lead, grade of zinc, grade of iron, and grade of <br /> <br /> silica in batch flotation and differential flotation of Pb-Zn complex ore from <br /> <br /> Bogor. <br /> <br /> Series of experimental activities began with the preparation of the Pb-Zn complex <br /> <br /> ore, which includes crushing, grinding, and sieve analysis. Characterization of ore <br /> <br /> samples was done using X-Ray Diffraction (XRD), X-Ray Fluorescence (XRF), <br /> <br /> Atomic Absorption Spectroscopy (AAS) and mineragraphy. Then, we measured <br /> <br /> the contact angle of galena minerals, sphalerite, and quartz. After measurement of <br /> <br /> contact angle, flotation experiment was performed with pH slurry variable (pH <br /> <br /> 5,8,9,11 and 12), collector type (Potassium Amyl Xanthate, Sodium Isobutyl <br /> <br /> Xanthate and Ammonium Alkyl Dithiophosphate), and flotation methods (froth <br /> <br /> flotation and differential flotation). <br /> <br /> The result of the measurement of the contact angle shows the result of galena and <br /> <br /> sphalerite being hydrophobic by the interaction with each collector, while the <br /> <br /> quartz remains hydrophilic. The grades of Pb-Zn and recovery values on PAX and <br /> <br /> SIBX collectors do not make a significant difference. The dithiophosphate <br /> <br /> collector provides lower grade results than the xanthate collector. Galena flotation <br /> <br /> achieved optimum results at pH 9 with PAX collector with Pb content of 18.47% <br /> <br /> and 98.32% revovery on differential method. Sphalerite flotation achieves <br /> <br /> optimum results at pH 12 with PAX collector with Zn content of 52.24%. The <br /> <br /> results showed that the differential flotation method on the Pb-Zn complex ore <br /> <br /> produced better grade and recovery concentrates than the froth flotation method.