The choice of high gradient magnetic separation processes for removal of Fe2O3 carriers from quartz raw material
1
Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia
2
Chamber of Commerce and Industry of Serbia, Belgrade, Serbia
3
University of Prishtina situated at Kosovska Mitrovica, Faculty of Technical Sciences, Kosovska Mitrovica, Serbia
4
University of Belgrade, Faculty of Mining and Geology, Serbia
Gospodarka Surowcami Mineralnymi – Mineral Resources Management 2017;33(4):93-106
KEYWORDS
ABSTRACT
This review article surveys the subject of choice of high gradient magnetic separation processes for removal of Fe2O3 carriers from quartz raw material by electromagnetic separator with magnetic field intensity of 1.4 T. The review is based on current experience of authors during research phase, as well as project development phase and initial operation of facilities in several locations. Quartz mineral raw material in those locations appeared as sandstone or as loose material. In addition to that, quartz raw material from those locations contained various impurities, i.e. Fe2O3 carriers. The choice of this process for Fe2O3 removal depended on mineralogical composition, shape and the content of minerals, and Fe2O3 removal rate after this process was from 29 to 65%. Magnetic separation is magnetic induction of 1.4 T. It is applied on commercial assortments which were previously subjected to washing and classification processes. It is always the assortment which has to have the lowest Fe2O3 content. The choice of „dry“ or „wet“ magnetic separation (with water flush) also depends on the fact whether this desired assortment is intended for market as dry or wet, as well as on the composition of magnetic impurities. In most cases, the process applied is the wet one.
METADATA IN OTHER LANGUAGES:
Polish
Wybór procesów separacji magnetycznej wysokogradientowej do usuwania nośników Fe2O3 z surowca kwarcowego
surowiec kwarcowy, zanieczyszczenia surowca, proces wzbogacania, separacja wysokogradientowa, separacja magnetyczna
W artykule dokonano przeglądu badań nad zastosowaniem procesów separacji magnetycznej wysokogradientowej w celu usunięcia nośników Fe2O3 z surowca kwarcowego z a pomocą separatora elektromagnetycznego o natężeniu pola magnetycznego wynoszącego 1,4 T. Przegląd opiera się na aktualnym doświadczeniu autorów podczas fazy badań, a także fazy planowania projektu i początkowej eksploatacji obiektów w kilku miejscach. Kwarcowy surowiec mineralny w tych miejscach występował jako piaskowiec lub luzem. Poza tym surowiec kwarcowy z tych miejsc zawierał różne zanieczyszczenia, np. nośniki Fe2O3. Wybór tego procesu w celu usunięcia Fe2O3 zależał od składu mineralogicznego, kształtu i zawartości minerałów, a stopień usuwania Fe2O3 w tym procesie wynosił od 29 do 65%. Separacja magnetyczna jest indukcją magnetyczną o natężeniu pola 1,4 T. Stosuje się ją do handlowych asortymentów, które były wcześniej poddawane procesom przemywania i klasyfikacji. Zawsze jest to asortyment, który musi mieć najniższą zawartość Fe2O3. Wybór „suchej” lub „mokrej” separacji magnetycznej (z płukaniem wodą) zależy również od tego, czy pożądany asortyment jest przeznaczony do sprzedaży na sucho czy na mokro, a także od składu zanieczyszczeń magnetycznych. W większości przypadków stosowany jest proces mokry.
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| ISSN: | 0860-0953 |
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