Synthesis of Mineral-specific Bioproteins for Selective Mineral Flotation
Numerous proteins of varying properties are available in extracellular bacterial proteins (EBP) isolated from Paenibacillus polymyxa. EBP was fractionated through ammonium sulfate precipitation in a controlled fashion and characterized through SDS-PAGE technique. Different groups of proteins, (Group A～D) exhibited varying degrees of surface affinity to minerals such as quartz, pyrite, chalcopyrite, galena and sphalerite. Interaction with mineral specific bioproteins rendered pyrite and chalcopyrite hydrophilic while surface of quartz, galena and sphalerite turned more hydrophobic. Specific groups of proteins could thus be used for selective separation of galena, sphalerite and quartz from pyrite and chalcopyrite (as a mixed sulfide) through microbially-induced flotation or selective flocculation.
Bioproteins Flotation Flocculation Sulfides Selectivity
Partha Patra K.A.Natarajan
Department of Materials Engineering, Indian Institute of Science, Bangalore, India
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
2644-2651
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）