工程科学学报2017，Vol.39Issue(10)：1507-1511,5.DOI:10.13374/j.issn2095-9389.2017.10.007;
基于循环系统的膏体浓密机底流调控及其数学模型
Regulation and a mathematical model of underflow in paste thickeners based on a cir-cular system design
杨柳华 1王洪江 2吴爱祥 1张连富 2陈辉1
作者信息
- 1. 北京科技大学土木与环境工程学院,北京 100083
- 2. 金属矿山高效开采与安全教育部重点实验室,北京 100083
- 折叠
摘要
Abstract
To assure that compression on the rakes of a deep corn thickener does not stop mixing, an additional circular slurry system, which activates slurry all the time, is employed and running resistance is usually decreased. However, there is still uncertain-ty on how circular parameters affect underflow properties. This means that the design and application of such systems lack support from scientific theories. Hence, it is necessary to create a study on how circular parameters regulate underflow parameters. Analysis of the circular system mechanism shows that its effect can be divided into two parts and the effect of the system on underflow properties is clarified. In addition, the value of underflow concentration in thickeners is solved based on calculus and finally a mathematical model is produced, which simulates the regulation of underflow properties in thickeners. Using the model, the circular parameters of under-flow in thickeners are verified. The experiment indicates that the solid concentration of underflow decreases with circular underflow ini-tiation, then tends to stabilize. Also, the volume fraction of underflow increases in the range of 0. 7% - 2. 2% with ascending circular flow and height. In addition, the time necessary for the solid concentration to stabilize is reversely affected by underflow flow and height. The regression function obtained from experimental statistics shows excellent performance in the model when designing and ana-lyzing circular systems for thickeners.关键词
浓密机/底流/调控机制/循环参数/数学模型Key words
thickener/underflow/regulation mechanism/circular parameters/mathematical model分类
矿业与冶金引用本文复制引用
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):1507-1511,5.
