Solidification and stabilization of sulfide-rich mine railings using lime-fly ash binders

摘要：

A preliminary experimental phase was conducted to test lime-fly ash binders in solidifying and stabilizing sulfide-rich tailings from two mines in Canada. Treated tailings samples were subjected to chemical and mineralogical characterization tests. Metal and sulfate leachability from the stabilized samples was assessed using the acetate-based TCLP test and deionized water. Results show that ettringite and other secondary minerals are responsible for solidifying the samples. Although these minerals are not well defined yet,results indicate the capability of lime-fly ash binders in immobilizing heavy metals in mine tailings and providing a solid product of appreciable mechanical strength.

关键词： sulfide-rich tailings ettringite solidification-stabilization lime-fly ash binders leach tests

作者: Shahé Shnorhokian Ferri P.Hassani Mohsen Hossein Jacques Ouellet

作者单位: McGill University,Department of Mining and Materials Engineering,Montreal,Quebec,Canada PMK Group,Kenilworth,New Jersey,USA Thyssen Mining,Regina,Saskatchewan,Canada

会议类型: 国际会议

会议名称: Seventeenth International Symposium on Mine Planning and Equipment Selection(MPES 2008)(第十七届矿山规划和设备选型国际研讨会)

会议地点: 北京

会议语种:英文

页码: 731-743

在线出版日期: 2008-10-20（万方平台首次上网日期，不代表论文的发表时间）