publication . Article . 2017

Leaching Process of Rare Earth Elements, Gallium and Niobium in a Coal-Bearing Strata-Hosted Rare Metal Deposit—A Case Study from the Late Permian Tuff in the Zhongliangshan Mine, Chongqing

Jianhua Zou; Heming Tian; Zhen Wang;
Open Access English
  • Published: 01 May 2017 Journal: Metals (issn: 2075-4701, Copyright policy)
  • Publisher: MDPI AG
Abstract
The tuff, a part of coal-bearing strata, in the Zhongliangshan coal mine, Chongqing, southwestern China, hosts a rare metal deposit enriched in rare earth elements (REE), Ga and Nb. However, the extraction techniques directly related to the recovery of rare metals in coal-bearing strata have been little-studied in the literature. The purpose of this paper is to investigate the extractability of REE, Ga and Nb in the tuff in the Zhongliangshan mine using the alkaline sintering-water immersion-acid leaching (ASWIAL) method. The results show that ASWIAL can separate and extract REE, Ga and Nb effectively under the optimized conditions of calcining at 860 °C for 0.5...
Subjects
free text keywords: extractability, alkaline sintering-water immersion-acid leaching, tuff, Chongqing, Mining engineering. Metallurgy, TN1-997, Geology, Niobium, chemistry.chemical_element, chemistry, Coal mining, business.industry, business, Leaching (agriculture), Coal, Gallium, Metallurgy, Metal, visual_art.visual_art_medium, visual_art, Sintering, Calcination, law.invention, law
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