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.
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Project supported by the National Doctoral Fund of the State Education Committee of China
Synopsis of the first author Wei Lubin, born in July 1962, received Ph D degree in 1995, majoring in mineral dry beneficiation and dry deep screening of moist fine coal.
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Wei, L., Chen, Q. & Luo, Z. Fine coal and three product dry beneficiation with vibration and double-density fluidized beds. J Cent. South Univ. Technol. 5, 104–107 (1998). https://doi.org/10.1007/s11771-998-0047-2
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DOI: https://doi.org/10.1007/s11771-998-0047-2