泵送剂改善膏体输送性能及配比优化  

Improving transport performance of paste with pumping agent and optimization of mixing proportion

作　　者：艾纯明[1] 吴爱祥[1] 王洪江[1] 杨锡祥 周发陆 

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点试验室,北京100083 [2]招金矿业伽师县铜辉矿业有限责任公司,喀什844300

出　　处：《科技导报》2015年第22期60-64,共5页Science & Technology Review

基　　金：国家自然科学基金项目(51374034);国家科技支撑计划项目(2012BAB08B02)

摘　　要：某铜矿在进行膏体充填试验时遇到了流动性差的问题,为改善膏体的流动性能,进行了泵送剂的试验研究。通过测量膏体的坍落度和扩展度,考查了5种不同的外加剂对膏体流动性能的影响。流动性测试结果表明,加入泵送剂C后膏体的工作性能良好,最佳添加量为水泥质量的2.0%-2.5%。开展均匀设计试验,拟合结果表明,质量分数、尾废比与流动性呈现负相关,砂灰比与流动性呈现正相关。依据拟合方程得出膏体的推荐配比：质量分数为77.5%-78.5%,尾废比为4.5-5.5,泵送剂添加置为水泥质量的2.0%,砂灰比为8。优化配比的验证试验结果满足实际要求。Pumping agents are added in the laboratory experiments to improve the poor fluidity of the paste. The influences of five different kinds of pumping agents on the flow properties are investigated by comparing the slumps and the slump flow. The result of test shows that the pumping agent C has the greatest effect with the best adding range of 2.0%-2.5%. The fitting result of the uniform design shows that the concentration and the aggregate ratio tail are negatively correlated with the liquidity and the sand-cement ratio is positive. Based on the fitting equation, the recommended mixing proportion of the paste is derived： The concentration of 77.5%- 78.5%, the aggregate ratio of 4.5-5.5, the amount of the pumping agent of 2.0% （quality of the cement）, the sand-cement ratio of 8. The results of the confirmatory experiment show that the actual requirements are met.

关 键 词：铜矿 泵送剂 膏体输送 

分 类 号：TD853.34[矿业工程—金属矿开采] TD862.1[矿业工程—矿山开采]