自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(英文版)

Journal of Central South University

Vol. 5    No. 2    December 1998

[PDF Download]    [Flash Online]

    

FINE COAL AND THREE PRODUCT DRY BENEFICIATION WITH VIBRATION AND DOUBLE-DENSITY FLUIDIZED BEDS
Wei Lubin1 Chen Qingru2  Luo Zhenfu2

1.Department of Mineral Engineering,Central South University of Technology, Changsha 410083,China;
2.China University of Mining &Technology

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 Ep 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 Ep value is 0.06. In the denser area, the separation density is about 1.85 g/cm3,and Ep value is 0.07.

 

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

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号