FINE COAL AND THREE PRODUCT DRY BENEFICIATION WITH VIBRATION AND DOUBLE-DENSITY FLUIDIZED BEDS

来源期刊：中南大学学报(英文版)1998年第2期

论文作者：Wei Lubin Chen Qingru Luo Zhenfu

文章页码：31 - 34

Key words：dry beneficiation; vibration fluidized bed; three-product separator

Abstract: The fluidizing performance and density uniform stability of vibration fluidized beds were analyzed. The experimental results in 2000 mm×80 mm×200 mm model apparatus show that the vibration fluidized bed can efficiently separate fine coal of size 6—0.5 mm, the beneficiation lower limit is 0.5 mm, the E_p value is 0.07. A double-density fluidized bed was formed by which the bed structure was specially designed with a pyramidal part. It can efficiently turn out three products according to densities in a fluidized cascade. The suitable range of gas flow rate is 4.4—4.6 m³/h. In the lighter area, the separation density is around 1.49 g/cm³,and E_p value is 0.06. In the denser area, the separation density is about 1.85 g/cm³,and E_p value is 0.07.