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 引用本文: 杨柳华, 王洪江, 吴爱祥, 张连富, 陈辉. 基于循环系统的膏体浓密机底流调控及其数学模型[J]. 工程科学学报, 2017, 39(10): 1507-1511.
YANG Liu-hua, WANG Hong-jiang, WU Ai-xiang, ZHANG Lian-fu, CHEN Hui. Regulation and a mathematical model of underflow in paste thickeners based on a circular system design[J]. Chinese Journal of Engineering, 2017, 39(10): 1507-1511. doi: 10.13374/j.issn2095-9389.2017.10.007
 Citation: YANG Liu-hua, WANG Hong-jiang, WU Ai-xiang, ZHANG Lian-fu, CHEN Hui. Regulation and a mathematical model of underflow in paste thickeners based on a circular system design[J]. Chinese Journal of Engineering, 2017, 39(10): 1507-1511.

• 中图分类号: TD853

## Regulation and a mathematical model of underflow in paste thickeners based on a circular system design

• 摘要: 为了保证浓密机在高料位下不压耙,一般通过增设循环系统使料浆始终处于活化状态,降低耙架运行阻力.然而,目前循环参数对底流的影响规律不明确,造成系统的设计及应用缺乏科学依据,为此开展了循环参数对底流的调控研究.分析循环系统的作用原理,将循环系统作用范围划分为两大区域,揭示循环参数对底流的调控机制,运用微积分原理对区域内的底流体积分数变化进行求解,最终建立浓密机底流调控数学模型.最后,利用该模型对底流循环实验参数进行验证.研究结果表明:开启底流循环后,底流体积分数开始降低并最终趋于稳定,底流体积分数差随着循环流量及循环高度增大而增大,体积分数变化幅度为0.7%~2.2%,稳定所需时间随流量及高度增加而减小.该理论模型完全吻合验证结果函数,为循环系统的设计及运行提供理论依据.
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##### 出版历程
• 收稿日期:  2017-03-16

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