| 掺入泵送剂全尾砂膏体流变特性研究 |
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| 引用本文： | 刘斯忠,王洪江,吴爱祥,彭乃兵,杨鹏.掺入泵送剂全尾砂膏体流变特性研究[J].武汉理工大学学报(交通科学与工程版),2014(4):919-922. |
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| 作者姓名： | 刘斯忠 王洪江 吴爱祥 彭乃兵 杨鹏 |
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| 作者单位： | Jr京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 |
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| 基金项目： | 国家自然科学基金项目（批准号：50934002,51104011,51074013）; 长江学者和创新团队发展计划项目（批准号：IRT0950）; 国家“十二五”科技支撑计划课题（批准号：2012BAB08B02）资助 |
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| 摘 要： | 以新疆某铜矿全尾砂为主要原料,研究了泵送剂掺量、质量分数和废石添加量对膏体流变特性的影响.试验结果表明：泵送剂掺量控制在2%左右便可达到最佳流变效果;屈服应力和塑性粘度与膏体质量分数间分别成指数和二次函数关系;随着废石添加量增多,屈服应力呈单调递减趋势,塑性粘度则无明显变化规律.以恒减速速率模拟浆体在管道中输送过程,发现膏体在流入采空区后仍能保持初始流变性能,说明泵送剂适用于该矿山膏体充填.
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| 关 键 词： | 全尾膏体 泵送剂 质量分数 废石添加量 流变特性 |
Study on the Rheological Properties of the Unclassified-tailings Paste Mixed with Pumping Agent |
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| LIU Sizhong,WANG Hongjiang,WU Aixiang,PENG Naibing,YANG Peng.Study on the Rheological Properties of the Unclassified-tailings Paste Mixed with Pumping Agent[J].journal of wuhan university of technology(transportation science&engineering),2014(4):919-922. |
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| Authors: | LIU Sizhong WANG Hongjiang WU Aixiang PENG Naibing YANG Peng |
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| Institution: | (University of Science and Technology Beijing Metal Mine High-efficient Exploitation and Security Key Laboratory of the Ministry of Education ,Beijing 100083,China) |
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| Abstract: | Taking the unclassified-tailings as the main experimental material,the paste rheological properties affected by pumping agent dosage、concentration and waste rock addictive amount were studied.The experimental results showed that the optimum result can be achieved with the pumping agent dosage at about 2%;the relation between yield stress and viscosity and paste concentration belongs to exponential function and quadratic function,respectively;yield stress decreased with the increasing waste rock addictive amount,but there was no obvious rule in terms of viscosity.Slurry transportation in the pipeline was simulated at one certain shear rate.It was found that the paste could keep the initial rheological properties after pumped into goaf,which proved that the pumping agent was suitable to this mine. |
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| Keywords: | unclassified paste pumping agent concentration waste rock addictive amount rheological properties |
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