| 激发剂在尾矿固化中的应用研究 |
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| 作者姓名： | 姜 薇 雷国元 徐民主 刘雅瑾 |
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| 作者单位： | 1. 武汉科技大学资源与环境工程学院,湖北 武汉,430081;2. 武汉科技大学冶金矿产资源高效利用与造块 湖北省重点实验室,湖北 武汉,430081;1. 武汉科技大学资源与环境工程学院,湖北 武汉,430081;2. 武汉科技大学冶金矿产资源高效利用与造块 湖北省重点实验室,湖北 武汉,430081;1. 武汉科技大学资源与环境工程学院,湖北 武汉,430081;2. 武汉科技大学冶金矿产资源高效利用与造块 湖北省重点实验室,湖北 武汉,430081;1. 武汉科技大学资源与环境工程学院,湖北 武汉,430081;2. 武汉科技大学冶金矿产资源高效利用与造块 湖北省重点实验室,湖北 武汉,430081 |
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| 基金项目： | 武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室开放基金资助项目(Mk201211). |
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| 摘 要： | 以采用工业粉状废物为主要原料配制的无水泥固结剂对细粒铁尾矿膏体进行固化处理,以三乙醇胺、氯化钙、水玻璃为激发剂来提高固结剂的活性,重点研究这3种激发剂在单掺或复掺时对固结体抗压强度的影响。结果表明,激发剂单掺时,水玻璃的激发效果要明显优于三乙醇胺和氯化钙,水玻璃掺量为0.75%时,其激发效果最好,固结体7d抗压强度比不掺激发剂时提高了29%;水玻璃与三乙醇胺复掺时的激发效果最优,当水玻璃掺量为0.75%、三乙醇胺掺量为0.035%时,固结体7d抗压强度达到1.4MPa,比单掺水玻璃时提高了16%。
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| 关 键 词： | 尾矿 固化 激发剂 抗压强度 工业粉状废物 |
| 收稿时间： | 2014/3/21 0:00:00 |
Application of activators in tailings curing |
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| Authors: | Jiang Wei Lei Guoyuan Xu Minzhu and Liu Yajin |
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| Institution: | 1. College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;2. Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan University of Science and Technology, Wuhan 430081, China;1. College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;2. Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan University of Science and Technology, Wuhan 430081, China;1. College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;2. Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan University of Science and Technology, Wuhan 430081, China;1. College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;2. Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources,Wuhan University of Science and Technology, Wuhan 430081, China |
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| Abstract: | Fine paste tailings were cemented by a cement-free consolidation agent prepared from industrial powder wastes, using triethanolamine, calcium chloride and sodium silicate as activators to improve the activity of solidifyng agent, and the effects of the 3activators used alone and in combination on the mechanical properties of solidified body were studied. The results show that, when activators are added alone, the activation effect of water glass is significantly better than that of triethanolamine and calcium chloride. When the dosage of sodium silicate is 0.75%, the activation effect is the best with the 7d compressive strength of solidified body having increased by 29% when compared with that of doping without activator. And the effect of sodium silicate and triethanolamine in combination is optimal. When the dosages of sodium silicate and triethanolamine are 0.75% and 0.035%, respectively, the 7d compressive strength of solidified body reaches 1.4MPa, having increased by 16% when compared with that of single-doping with sodium silicate. |
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| Keywords: | tailings curing activator compressive strength industrial powder waste |
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