PREPARATION OF FERROFLUID FOR MINERAL PROCESSING AND ITS PROPERTIES
(1 College of Reasource Engineering, University of Science and Technology Beijing, Beijing100083, P. R. China
2 Department of Resource Engineering,Southern Institute of Metallurgy, Ganzhou 341000,P. R. China
3 General Research Institute for Nonferrous Metal, Beijing100088, P. R. China
4 Department of Chemical Enigineering, Southern Institute of Metallurgy, Ganzhou 341000, P. R. China)
2 Department of Resource Engineering,Southern Institute of Metallurgy, Ganzhou 341000,P. R. China
3 General Research Institute for Nonferrous Metal, Beijing100088, P. R. China
4 Department of Chemical Enigineering, Southern Institute of Metallurgy, Ganzhou 341000, P. R. China)
Abstract: A new method of preparation of the ferrofluid for mineral processing was introduced. First, Fe3O4particles were obtained by oxidizing FeSO4only with the air,then the particles were collected with surfactant and dispersed into kerosene or water to prepare the kerosene based ferrofluid or water based ferrofluid. The properties (stability, viscosity, surface electricity,magnetism and apparent density) of the prepared ferrofluid were studied. The tests of separating minerals using the prepared ferrofluid as the separating medium showed that the ferrofluid has higher separating efficiency than that of paramagnetic salt solution.
Key words: mineral processing ferrofluid preparation properties