内循环泡沫浮选动力学过程的建模研究  

Modeling research of kinetic parameters about the inner circulating foam flotation

作　　者：汪德进[1,2] 

机构地区：[1]安庆师范学院资源环境学院,安徽安庆246052 [2]上海大学环境与化学工程学院,上海200444

出　　处：《计算机与应用化学》2014年第3期345-348,共4页Computers and Applied Chemistry

基　　金：安徽省科技计划项目(1301zc02025;1402052053);2013年安庆市重点科技项目(20130404)

摘　　要：泡沫浮选法具有分离效果好、操作简单等优点,近年来广泛应用于工业领域中。然而目前常规泡沫浮选塔存在夹带率高、分离效率低等缺点,也缺乏合理的动力学数学模型对其分离效果进行预测。在内循环泡沫浮选塔中,间歇分离条件下,首先对浮选分离动力学过程进行分析,选取6个取样高度点,拟合建立数学模型。研究结果表明,吸附过程符合颗粒内扩散模型,泡沫上吸附的铬离子的量与时间的平方根呈线性关系;pH值的变化对铬离子吸附影响较大;塔轴向浓度分布数学模型与实验值较为吻合,对分离效率分析和进一步的操作优化研究具有一定的实际意义。Circulating foam flotation with many advantages such as better separation, simple operation has been widely applied in industries in recent years. Because of the lack of a reasonable mathematical model, the operation of the circulating foam flotation is depended on the experience. It has fitting a mathematical model in circulating foam flotation about selecting the six sampling height points of intermittent separation conditions by the first flotation separation dynamics analysis. The results showed that the adsorption process in accordance with particle diffusion model chromium ions adsorbed on the foam amount of square root of time is linear; pH values on the chromium ion adsorption greater impact; column axial concentration distribution is more mathematical model with the experimental consistent, with good reference value. The models for circulation foam flotation proposed in this paper have certain practical significance for operation optimization analysis and further study.

关 键 词：内循环 统计建模 铬 泡沫浮选 

分 类 号：TQ018[化学工程] O643[理学—物理化学]