PRE-CONCENTRATION TECHNIQUES FOR RESIDUAL COAL FROM BOTTOM ASH. PART 1 - METHODOLOGY AND PROCEDURES.

The carbon content in ash differs depending on the quality of the coal, the efficiency of the combustion plant, the combustion parameters and so on. The separation of unburned coal from ash can be done for various purposes - to reduce the unburned coal content before its use (eg for cement production), to collect uncharged coal to further study its characteristics or to prepare some absorbents, graphite materials, etc. The choice of the separation procedure is therefore given by the purpose of the separation, the properties required for unburned carbon, or by the subsequent intended use. The UCB research team analyzed twelve pre-concentration procedures for residual carbon from bottom ash. The procedures and the methodology used for comparison are pointed out. [ABSTRACT FROM AUTHOR]