Rare earths (La, Ce, Nd) and rare metals (Sn, Nb, W) as by-products of kaolin production - Part 2: Gravity processing of micaceous residues

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• 作者：Q. Dehaine ^{quentin.dehaine@univ-lorraine.fr} ; L.O. Filippov ; ^{lev.filippov@univ-lorraine.fr} ; R. Joussemet ^{robert.joussemet@univ-lorraine.fr}
• 关键词：Light Rare-Earths ; Monazite ; Spiral ; Shaking table ; Low-grade ore ; Response surface method
• 刊名：Minerals Engineering
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：100
• 期：Complete
• 页码：200-210
• 全文大小：1134 K
• 卷排序：100

文摘

A kaolin residue has been treated by gravity concentration for metal recovery. Low wash water and pulp density favour heavy minerals (HM) recovery with the spiral. 70% of the LREE are recovered after one spiral pass and up to 80% HM after 4 passes. Up to 98.5% HM grade is obtained treating spiral concentrate with a shaking table. The residue being depleted in rare metals, only LREE are concentrated at up to 1.6%.