Mechanochemical reduction of SrSO4 by Mg
作者： N. Setoudeh , N.J. Welham
DOI: 10.1016/J.MINPRO.2011.12.004
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摘要: Abstract Mixtures of celestite concentrate (98% purity) and magnesium powders (97% with a molar ratio 1:4 were milled for increasing times. The temperature–time profile indicated sudden increase in vial temperature between 10 11 min the stoichiometric mixture SrSO 4 –Mg, whilst only 8–9 min required 25% excess magnesium. X-ray diffraction showed that reaction produced SrS MgO, milling time beyond necessary ignition did not have any major effect on products. results mechanochemical was highly exothermic initiated as mechanically induced self sustaining (MSR). After milling, products washed hot water (T = 80 °C) 2 h to separate soluble from insoluble MgO.
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