04/01739 Results of the demonstration operation, the demonstration and dissemination project for a coal preparation system, model project for an environmentally harmonized coal utilization system in China. Coal preparation technology suited for de-sulfurizing and de-ashing performance

2004 ◽  
Vol 45 (4) ◽  
pp. 245-246
Keyword(s):  
System Model ◽  
Coal Preparation ◽  
Preparation Technology ◽  
Model Project

Coal preparation technology

1988 ◽  
Vol 1 (4) ◽  
pp. 374-375 ◽  
Author(s):  
B.A. Wills
Keyword(s):  
Coal Preparation ◽  
Preparation Technology

Research on Density Control of Wind Jig Dry Coal Preparation System

2011 ◽  
Vol 179-180 ◽  
pp. 558-562 ◽  
Author(s):  
Wei Sheng Liu
Keyword(s):  
Coal Preparation ◽  
Control Methods ◽  
Preparation Technology ◽  
Loop Control ◽  
Density Control ◽  
Physical Density ◽  
Coal Particles ◽  
Working Principle ◽  
And Control ◽  
Close Loop Control

the paper exposits the purpose and the significance of the wind jig dry coal preparation technology, discuss the working principle and control methods of the wind jig dry coal preparation system. . Based on the dynamic data of the physical density, the control system auto tunes the speed of the opening by utilization of a frequency governor. Therefore, it controls the thickness of the beddepth very precisely and achieves the close loop control in the dry preparation system of coal dressing.Make use of adjustable air pressure and mechanical vibrations of materials according to the density and the particles on the sorting bed for loosing and layered, and using adjustable nesting institutions coal particles of different densities to classify, in order to achieve separation, refuse dumping, desulfurization purposes.

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