1. Coal cleaning by counter-current fluidized cascade;Beeckmans;CIM Bull.,1982
2. Hand Book of Coal Preparation;Blagov,1974
3. 50 t/h coal dry cleaning demonstration plant with air dense medium fluidized bed;Chen,1994
4. Chen, Q. R., Yang, Y., Yu, Z. M. & Wang, T. J. (1991). Dry cleaning of coarse coal with air dense medium fluidized bed at 10 tons per hour. Eighth Annual International Pittsburgh Coal Conference Proceedings (pp.266–271). USA.
5. Measurement of the drag on spheres moving through gaseous fluidized beds;Daniels;J. Mech. Eng. Sci.,1962