00000nam 2200000zi 4500 9.869763 CaOODSP 20221107162934 m o d f cr ||||||||||| 190313t19651965onc ot f000 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- M38-1/163-1965E-PDF M38-1/163 Kent, G. A., author. Production of high-purity magnesia / G.A. Kent, Mineral Processing Division. Ottawa : Department of Mines and Technical Surveys, Mines Branch, June 1965. ©1965 1 online resource (iv, 11 pages) text txt rdacontent computer c rdamedia online resource cr rdacarrier Research report ; R 163 Digitized edition from print [produced by Natural Resources Canada]. Title from cover. "This investigation was carried out to produce magnesite, or magnesia, with low iron content. Flotation and magnetic separation of uncalcined magnesite ore yielded concentrates in the order of 2% Fe (as Fe203) and 0.5% SiO2. Calcination of the concentrates, followed by flotation and magnetic separation, further reduced the iron to about 1 % Fe203 and the silica to about 0.4%. Leaching calcined ore or concentrate with dilute acetic acid produced magnesia containing less than 0.01% Fe203 and low silica. A procedure for producing high-grade magnesia is suggested"--Abstract, page i. Includes abstract in French. Magnesia Canada. Department of Mines and Technical Surveys. Canada. Mines Branch. Research report (Canada. Mines Branch) R 163. (CaOODSP)9.855660 PDF 262 KB https://publications.gc.ca/collections/collection_2019/rncan-nrcan/m38-1/M38-1-163-1965-eng.pdf