深錐濃密機底流濃度模型及動態壓密機理分析

吳愛祥; 楊瑩; 王貽明; 陳輝; 王勇

doi:10.13374/j.issn2095-9389.2018.02.004

深錐濃密機底流濃度模型及動態壓密機理分析

doi: 10.13374/j.issn2095-9389.2018.02.004

吳愛祥^1,2,
楊瑩^1,2, ,,
王貽明^1,2,
陳輝^1,2,
王勇^1,2

1) 北京科技大學金屬礦山高效開采與安全教育部重點實驗室, 北京 100083
2) 北京科技大學土木與資源工程學院, 北京 100083

基金項目:

國家重點研發計劃資助項目（2016YFC0600709）；國家自然科學基金資助項目（51374034，51574013）；北京市科委資助項目（Z161100001216002）

詳細信息

中圖分類號: TD853
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出版歷程
- 收稿日期: 2017-03-20

Mathematical modelling of underflow concentration in a deep cone thickener and analysis of the dynamic compaction mechanism

WU Ai-xiang^1,2,
YANG Ying^{1,2
, ,},
WANG Yi-ming^1,2,
CHEN Hui^1,2,
WANG Yong^1,2

1) Key Laboratory of Ministry of Education for High-Efficient Mining and Safety of Metal Mines, University of Science and Technology Beijing, Beijing 100083, China
2) School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China

摘要

摘要: 泥層高度和底流濃度是深錐濃密機最為重要的兩個參數，因此有必要研究底流濃度隨泥層高度的變化規律.采用自制小型深錐濃密機，對尾礦非連續/連續動態壓密過程進行了物理實驗；借助于有效孔隙比與泥層壓強間遵循的Power函數關系，結合對尾礦顆粒的受力分析，推導出了底流濃度與泥層高度的數學模型，揭示了濃密機底流濃度與泥層高度的內在關系，并從尾礦顆粒空間結構的角度解釋了該模型的變化規律；結合礦山生產對于底流濃度的要求，應用該數學模型，為其推薦了泥層高度的合理范圍，驗證了底流濃度數學模型的可靠性.該模型為深錐濃密機的設計和運行提供了理論依據.
- 深錐濃密機 /
- 泥層高度 /
- 底流濃度 /
- 數學模型 /
- 壓密機理
Abstract: The sludge height and underflow rate are the two most important parameters for deep cone thickeners. Therefore, studying 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 mathematical model of underflow concentration and sludge height. The results revealed the inner floc structure relation between underflow concentration and sludge height of the deep cone thickener. In addition, the law of change of this model was explained by applying a spatial structure theory of tailings particles. Based on the requirements for the underflow concentration of mine production, the mathematical 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.
- deep-cone thickener /
- sludge height /
- underflow concentration /
- mathematical model /
- compaction mechanism

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參考文獻(6)

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