膏体深锥浓密系统可靠性分析及系统优化研究  

RELIABILITY ANALYSIS AND OPTIMIZATION OF THE PASTE THICKENING SYSTEM

作　　者：郭春攀 胡乃联[1] 程海勇[1] 潘金城 王贻明[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]中色非洲矿业有限责任公司,北京100083

出　　处：《矿冶》2016年第2期5-8,18,共5页Mining And Metallurgy

基　　金："十二五"国家科技支撑计划项目(2012BAB08B02);国家自然科学基金资助(51104010)

摘　　要：全尾砂深锥浓密系统是膏体制备的重要环节。由于深锥浓密机结构及工作原理较为复杂,运行工况不稳定,生产故障导致的系统停机频繁发生。从系统可靠性的角度对深锥浓密系统进行了分析,建立了深锥浓密系统的事故树模型,对各子系统结构重要度进行了排序,得到了首要因素为:浓度过高造成的管路堵塞,并计算了其发生概率为0.025。通过试验研究,对深锥浓密底流参数进行了优化。通过对砂浆流动性研究,对流动指数进行了回归分析,得到了全尾砂浆的临界浓度为69%。为现场故障预测与系统优化提供了理论依据。The backfilling deep cone thickening system is an important part of the paste preparation. Since the deep cone thickener is complicated in structure and working principle, its operation condition is not stable which frequently result in system failure. This paper analyses the deep cone thickening system from the perspective of sys- tem reliability, establishes fault tree model of deep cone thickening system, ranks the importance degree of each subsystem structure, finds the dominant sector being pipe plugging which is caused by excessive concentration, and calculates its probability being 0. 025. Through the experimental study, the deep cone bottom flow parameters were optimized. The regression analysis conducted for the flow index through the study of mortar liquidity showed the whole tailings slurry critical concentration is 69% , which provides a theoretical basis for field failure prediction and system optimization.

关 键 词：膏体 深锥浓密 可靠性 事故树 流动指数 

分 类 号：TD853[矿业工程—金属矿开采]