Based on the sedimentation rule, the bottom sediment distribution in rake thickener is analysed, and bottom flow separation is suggested to raise the production efficiency.

运用了耙式浓缩机的沉降规律，对浓缩机底沉降料层灰分分布进行了分析，建议采用底流双流制进行底流分别处理，达到增效节能的目的。