Cel THE AIM OF THE PROPOSED RESEARCH IS TO DEVELOP A NEW TECHNIQUE IN HIMS TO IMPROVE SELECTIVITY IN THE SEPARATION OF FINE-GRAINED COMPLEX MINERAL MIXTURES AND TO DEVELOP MATHEMATICAL MODELS FOR THE PREDICTION OF SEPARATION PERFORMANCE AND FOR THE DESIGN OF PROCESS FLOWSHEETS. THE CONCEPT OF THE NEW TECHNIQUE IS BASED ON AN INNOVATIVE APPROACH TO SELECTIVITY BY ONE OF THE ASSOCIATES. INSTEAD OF USING WATER TO TRANSPORT THE MINERAL GRAINS THROUGH THE MAGNETIC SEPARATOR, A PARAMAGNETIC LIQUID IS USED OF THE SUSCEPTIBILITY AS THE LESS MAGNETIC MINERAL. IN THIS WAY THE MAGNETIC FORCE ON PARTICLES OF THAT MINERAL WILL BE ELIMINATED AND SELECTIVITY THUS INCREASED. The objectives of this research programme were to improve selectivity in high intensity high gradient magnetic separation (HGMS) and to develop a mathematical model of high intensity magnetic separation for the prediction of separation performance.Mathematical modelling has been applied to HGMS to study the capture process in particular of monomineralic feed materials.Modelling of separations between different minerals has so far been based on ideal deposition conditions and therefore has been of limited applicability to actual mineral processing. In view of this it was decided to develop a practical model in conjunction with the selectivity studies to predict separation performance and to be included in a general purpose simulation package for mineral processing.Mechanical entrainment and magnetic capute of gangue minerals were shown to act in conjunction in conventional HGMS and paramagnetic liquids were shown to effectively reduce competitive magnetic capture of impurity minerals.The modelling studies give an insight into the mechanisms that control the performance of a wet high intensity magnetic separation (WHIMS) type magnetic separator. A model has been formulated on an empirical basis and will be incorporated in a general purpose simulator for mineral processing.THE TECHNIQUE TO BE DEVELOPED IS AIMED AT MAXIMISING SELECTIVITY IN THE SEPARATION OF MINERALS WITH RELATIVELY SMALL DIFFERENCES IN MAGNETIC SUSCEPTIBILITY SO THAT IT CAN BE APPLIED TO COMPLEX ORES. THE ASPECT OF SELECTIVITY IS THEREFORE OF PRIME IMPORTANCE IN THE PROPOSED RESEARCH WORK LABORATORY TESTS AND MODELLING STUDIED WILL BE USED FOR IMPROVING SEPARATION PERFORMANCE AND PROCESS DESIGN BILLITON RESEARCH AND THE UNIVERSITY OF SOUTHAMPTON WILL STUDY THE SEPARATION MECHANISM, NOVEL MATRIX SYSTEMS. TO IMPROVE SELECTIVITY AND THE DESIGN AND CONSTRUCTION OF PILOT SCALE SEPARATORS - WARREN SPRING LABORATORY WILL CARRY OUT A GENERALISED STUDY OF THE SEPARATION, MEASURE THE MAGNETIC PROPERTIES OF MINERALS, LIQUID AND MATRIX ELEMENT AND DEVELOP MATHEMATICAL MODELS TO DESCRIBE THE PROCESS AND TO BE USED INTO PROCESS SIMULATION MODELS. Dziedzina nauki agricultural sciencesagriculture, forestry, and fisheriesagriculturegrains and oilseedsengineering and technologyenvironmental engineeringmining and mineral processingnatural sciencesmathematicsapplied mathematicsmathematical model Program(-y) FP1-RAWMAT 3C - Research programme (EEC) on materials (raw materials and advanced materials), 1986-1989 Temat(-y) Data not available Zaproszenie do składania wniosków Data not available System finansowania CSC - Cost-sharing contracts Koordynator Billiton Research BV Wkład UE Brak danych Adres 6800 AA Arnhem Niderlandy Zobacz na mapie Koszt całkowity Brak danych Uczestnicy (1) Sortuj alfabetycznie Sortuj według wkładu UE Rozwiń wszystko Zwiń wszystko UNIVERSITY OF SOUTHAMPTON Zjednoczone Królestwo Wkład UE Brak danych Adres University Road, Highfield SOUTHAMPTON Zobacz na mapie Koszt całkowity Brak danych
