Calcination Factors of Rubidium Extraction from Low‐Grade Muscovite Ore

Shan, Zhi-Qiang; Shu, Xinqian; Feng, Jiangshan; Zhou, Wenbo

doi:10.1002/9781118663448.ch44

Cited by 1 publication

(1 citation statement)

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“…which serves as impurities and could apparently reduce the quality of the muscovite [7,8]. Muscovite ore processing methods mainly include shape separation; a method where particles are separated based on shapes required for the improvement in quality of powder products, pneumatic separation; using aerodynamics properties of particles to heave light, dusty and husky materials out of grains while heavier materials settle, and flotation; a process for selectively separating hydrophobic materials from hydrophilic substances [9,10,11,12]. Purification studies of muscovite involves fluoric acid leaching which has been found to show great effects on processing of muscovite but also found to lead to severe environmental pollution [13,14].…”

Section: Introductionmentioning

confidence: 99%

Dissolution of a Nigerian sourced Muscovite ore for use as an ingredient in paint production

Olaoluwa

Abdulmalik

Muraina

et al. 2020

J. Nig. Soc. Phys. Sci.

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Dissolution and characterization studies on the purification of muscovite ore in hydrochloric acid for use in paint production was investigated. Specific dissolution parameters including the effects of acid concentration as well as temperature on the dissolution of muscovite ore were studied. Important instrumentation techniques such as X-ray Fluorescence (XRF), X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) were employed for the better explanation of the dissolution process so as to fathom the availability of elements and compounds within the ore. The results revealed that the dissolution rates were considerably influenced as the acid concentration and temperature increased, while at optimal leaching conditions, about 85 % of the ore was found to have been reacted by 2.5 mol/L at 75oC temperature and at 120 minutes of leaching time. The reaction order for the dissolution can be deduced to be half order reaction as the value obtained was in the bracket of 0.50. The reaction kinetic data revealed the dissolution mechanism to involve diffusion and surface chemical mechanisms as the rate-controlling mechanisms while the different instrumentation techniques corroborated the dissolution as well as purification of the muscovite ore as an ingredient for possible use in paint production.

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