Density Factor Correction
VSMA.........will use a material bulk density factor of 1 assuming the material is 100 lbs cubic foot. Anything other than aggregate, ie coal will direct you to a correction factory to reflect the weight of the specific TYPE of coal.
This will in turn make the screen area required .......larger or smaller of course. ■
Re: Sizing Of Screen For Coal
Thanx for the reply. ■
Re: Sizing Of Screen For Coal
Dear Mr. Kaushlesh,
Your question is more of a general nature. There can be two types of graphs (1) Graph depiction coal output ton/hour per square feet of area. Even in such graph, they would mention what is the bulk density they have considered while mentioning ton/hour. (2) The graph depicting cubic feet / hour per square feet of area. In this case you have to multiply it by bulk density etc. to convert into tons/hour.
The screen throughput is volumetric in nature.
Regards,
Ishwar G Mulani.
Author of Book : Engineering Science and Application Design for Belt Conveyors.
Author of Book : Belt Feeder Design and Hopper Bin Silo
Advisor / Consultant for Bulk Material Handling System & Issues.
Email : parimul@pn2.vsnl.net.in
Tel.: 0091 (0)20 25882916 ■
Re: Sizing Of Screen For Coal
Thanx Mr. Mulani I got your point. But I got confused because no refrence bulk density was given the graph.
Thanx anyway. ■
Sizing of screen for coal
During my study of sizing of screens for coal I came across the method given in the book "Coal Preparation" by Leonard. It dipicts a graph for the calculation of screen capacity in Tons Per Hour Per Sq. Feet Through Openings vs Size of the openings. Do here also we have to use a bulk density correction factor to get the correct capacity? If so what is it? Please Help. ■