The use of rhamnolipid biosurfactants as a frothing agent and a sample copper ore response

摘要: Abstract The flotation performance of a copper ore sample in the presence rhamnolipid biosurfactant produced by Pseudomonas aeruginosa MA01 strain was studied. product first investigated with respect to surface tension and frothing characteristics. Rhamnolipid showed higher activity frothability compared DF-250 MIBC frothers. Copper molybdenum grades recoveries were found decrease as concentration increased. In contrast, iron fairly improved rhamnolipid. Results indicated that use significantly increased rate all minerals. As predicted hydrophile–lipophile balance number/molecular weight diagram, powerful surfactant recovery coarser particles concentrates. Although rhamnolipids not pleasing but minerals may lead its possible application dense mineral such zinc.