Weathering behavior and metal mobility of tailings under an extremely arid climate at Jinchuan Cu-Ni sulfide deposit, Western China

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• 作者：Ling Wang^a ; ^b ; Yan Li^b ; ^{liyan-pku@163.com} ; Haoran Wang^b ; Xinglan Cui^b ; ^c ; Xiao Wang^b ; Anhuai Lu^d ; ^{ahlu@pku.edu.cn} ; Xin Wang^b ; Changqiu Wang^b ; Deqing Gan^a
• 关键词：Jinchuan Cu-Ni sulfide deposit ; Cu-Ni sulfide tailings ; Sulfide oxidation ; Metal mobility ; Arid climate
• 刊名：Journal of Geochemical Exploration
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：173
• 期：Complete
• 页码：1-12
• 全文大小：2309 K
• 卷排序：173

文摘

Oxidative weathering of Jinchuan sulfide tailings releases heavy metals without AMD generation. Upward migration of Ca2 + and SO42 − formed gypsum under strong evaporation. Cu2 + and Ni2 + released from sulfides are immobilized by absorption or co-precipitation. Heavy metals in poorly crystalline secondary minerals give rise to windblown dust pollution.