High-efficiency trace Na extraction from crystal quartz ore used for fused silica — A pretreatment technology

Lin, Min; Pei, Zhenyu; Liu, Yuanyuan; Xia, Zhangjie; Xiong, Kang; Lei, Shaomin; Wang, Enwen

doi:10.1007/s12613-017-1498-y

Cited by 8 publications

(1 citation statement)

References 24 publications

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“…Thus, calcination at 900 • C triggers a dehydroxylation of muscovite, and further promotes the structural damage of Al VI -O octahedrons close to the interlayer. Since the trace muscovites are distributed uniformly in the quartz sand, the minor phases are difficult to be produced during calcination of actual minerals [15,21,22]. agents.…”

Section: Mechanism Analysis Of Muscovite Dissolutionmentioning

confidence: 99%

Dissolution Behaviors of Trace Muscovite during Pressure Leaching of Hydrothermal Vein Quartz Using H2SO4 and NH4Cl as Leaching Agents

et al. 2018

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Dissolution behaviors of trace muscovite during pressure leaching of hydrothermal vein quartz using H 2 SO 4 and NH 4 Cl as leaching agents have been studied by means of optical and electronic microscopes. Phase transformations of pure muscovite during calcination and the pressure leaching were analyzed by powder X-ray diffraction (XRD) and thermal analysis (TG-DSC), which are used for indirectly discussing dissolution mechanisms of the trace muscovite. Structure damages of trace muscovite are caused by calcination, and further developed during pressure leaching of the quartz sand using H 2 SO 4 and NH 4 Cl as leaching agents. The trace muscovite is dissolved, and then efficiently separated from quartz sand by coupling effects of calcination and fluorine-free pressure leaching.

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Section: Mechanism Analysis Of Muscovite Dissolutionmentioning

confidence: 99%