提高倾斜板沉降分级效率的实验研究

为解决现有倾斜板设备沉降分级效率低的问题,在分析研究倾斜板沉降分级理论的基础上,自行设计研制了倾斜板模型机,建立了煤泥水沉降分级试验系统,研究了入料粒度组成、入料浓度和入料流量对分级效果的影响,优化了倾斜板的板长、板宽和板间距等结构参数.结果表明:倾斜板的最佳结构参数为:板长为899.20 mm,板宽为319.56 mm,板间距为40.77 mm;入料中粗颗粒增多会提高分级效率,入料的临界浓度为103.33 g/L,入料流量应控制在57.34 L/min左右为宜.

Experimental Study of Improving Classification Efficiency of the Inclined Plate

In order to resolve the problem of low classification efficiency of current inclined plate, on the basis of analyzing the classification theory of inclined plate, an experimental mod-el with the inclined plate and relative system were developed for studying the sedimentation and classification of coal slime. The effects of size distribution, concentration and flow rate of feed on classification efficiency were studied. The length and width of the plate and its spacing were optimized. The results show that the optimum plate length of 899.20 mm, width of 319.65 mm and plate spacing of 40.77 mm were achieved. The classification efficiency increased with the increasing of content of coarse particle in feed. The critical feed concentration is 103.33 g/L and the appropriate feed flow rate is about 57.34 L/min.