工程科学学报2018，Vol.40Issue(2)：152-158,7.DOI:10.13374/j.issn2095-9389.2018.02.004
深锥浓密机底流浓度模型及动态压密机理分析
Mathematical modelling of underflow concentration in a deep cone thickener and analysis of the dynamic compaction mechanism
摘要
Abstract
The sludge height and underflow rate are the two most important parameters for deep cone thickeners. Therefore, stud-ying the law of change of the underflow concentration with sludge height is important. Discontinuous or continuous dynamic compaction processes of the tailings were investigated physically by using a small, self-made deep cone thickener. Using the power function relation between effective void ratio and mud pressure and combining with force analyses of the tailing particles, this study deduced a mathemat-ical model of underflow concentration and sludge height. The results revealed the inner floc structure relation between underflow con-centration and sludge height of the deep cone thickener. In addition, the law of change of this model was explained by applying a spa-tial structure theory of tailings particles. Based on the requirements for the underflow concentration of mine production, the mathemati-cal model was applied, the reasonable range of sludge height was presented, and the reliability of this model was verified. Moreover, this mathematical model provides a theoretical basis for the design and operation of deep-cone thickeners.关键词
深锥浓密机/泥层高度/底流浓度/数学模型/压密机理Key words
deep-cone thickener/sludge height/underflow concentration/mathematical model/compaction mechanism分类
矿业与冶金引用本文复制引用
吴爱祥,杨莹,王贻明,陈辉,王勇..深锥浓密机底流浓度模型及动态压密机理分析[J].工程科学学报,2018,40(2):152-158,7.基金项目
国家重点研发计划资助项目(2016YFC0600709) （2016YFC0600709）
国家自然科学基金资助项目(51374034,51574013) （51374034,51574013）
北京市科委资助项目(Z161100001216002) （Z161100001216002）
