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全尾膏体制备过程中尾矿颗粒运移行为研究进展与趋势
引用本文:阮竹恩,李翠平,钟媛.全尾膏体制备过程中尾矿颗粒运移行为研究进展与趋势[J].金属矿山,2014,43(12):13-19.
作者姓名:阮竹恩  李翠平  钟媛
作者单位:1.北京科技大学土木与环境工程学院,北京 100083; 2.金属矿山高效开采与安全教育部重点实验室,北京 100083
基金项目:* 国家自然科学基金项目(编号:51174032),教育部新世纪优秀人才支持计划项目(编号:NCET-10-0225),中央高校基本科研业务费专项资金项目(编号:FRF-TP-09-001A)。
摘    要:我国重要大宗金属矿产资源平均品位低,加之近年来我国矿产资源需求的持续增长、资源综合利用率的不断提升,导致尾矿粒度越磨越细、尾矿排放量越来越大,尾矿已成为我国金属矿山的重大危险源。目前,对于全尾矿的处置技术基本上为地表低浓度排放和井下充填,但是由于尾矿制备和输送浓度过低而存在许多问题,尾矿膏体堆放和膏体充填是尾矿最有效最具前景的处理方式,以此来实现安全生产和保护环境。超细全尾颗粒沉降速度慢,渗透性差,导致浓密困难,因此带有超细颗粒的全尾矿快速脱水浓密是膏体制备的技术关键。详细介绍了全尾膏体制备过程中全尾颗粒沉降、絮凝沉降、颗粒运移以及沉降机理的研究现状,分析了目前研究存在的问题以及其发展趋势。

关 键 词:全尾膏体制备  颗粒沉降  絮凝沉降  沉降机理  颗粒运移

Development Progress and Trend of Whole-Tailings Particles'Migration Behavior during Preparation of Whole-Tailings Paste
Ruan Zhuen,Li Cuiping,Zhong Yuan.Development Progress and Trend of Whole-Tailings Particles'Migration Behavior during Preparation of Whole-Tailings Paste[J].Metal Mine,2014,43(12):13-19.
Authors:Ruan Zhuen  Li Cuiping  Zhong Yuan
Affiliation:1.School of Civil & Environmental Engineering,University of Science & Technology Beijing,Beijing 100083,China;2.Ministry of Education Key Laboratory of High Efficiency Mining & Safety for Metal Mines,Beijing 100083,China;
Abstract:The large bulk key metallic mineral resources in China is in a low average grade.Coupled with sustainable growth in demand of mineral resources and constant pursuit for comprehensive utilization ratio of resources in recent years,tailing particles become more and more fine and tailing emissions continue to be grown.As a result,tailing has become a major hazard source of metal mines in our country.Currently,the disposal of whole-tailings basically includes over-ground stockpiling at lower concentration and underground filling.However,there are many problems in preparation and delivery of tailings in lower tailings concentration.With the consideration of safe production and environmental protection,pasty tailings stockpiling and whole-tailing paste filling will be the most effective and promising methods.Due to the low sedimentation velocity and poor permeability of whole-tailing with ultrafine particle,dewatering and thickening become difficult.So dewatering and thickening rapidly for whole-tailings with ultrafine particles is the key technology for preparation of whole-tailings paste.The development status of whole-tailings particles' migration behavior during whole-tailings paste preparation is outlined,including whole-tailings particle sedimentation,flocculation sedimentation,particle migration as well as sedimentation mechanism.Finally,the problems in and trend of development are analyzed.
Keywords:Preparation of whole tailings paste  Particle sedimentation  Flocculation sedimentation  Sedimentation mechanism  Particle migration
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