Differential liquid-solid extraction of sulphur from volcanic-type ore

Sulphur recovery from low grade ore has been achieved by solvent extraction method, in a differential, continuous extractor. The mathematical models, describing the differential extraction, have been adapted by attributing nu merical values to its parameters. Additional measurements for equilibrium c haracteristics are needed. Simulations have been performed to study the inf luence of temperature, liquid/solid ratio and conveyer speed on the extract ion efficiency. The results, represented in graphs, illustrating the correl ation between the extraction efficiency and the working parameters are in g ood agreement with the experimental data. (C) 1999 Elsevier Science Ltd. Al l rights reserved.