Greetings Ahmed, ims Allah I can save you a headache or two,

After reading your message here in the eastern wilderness @1140 feet above mean sea level I wanted to save you a lot of work and FOR GOOD OR BAD HERE IT IS.

Pedestal breakers have been around for a long time for both surface and underground use in ore passes/grizzlies so your professor is not being at all helpfull.

In all reality your grizzly is small even for anthracite as the grizzly must be larger or install an apron feeder which will act as a recieving pit with a choker plate to hold back flow while it is being carried into the grizzly-the smaller the opening-no matter how small-it could be only 3 inches will solve your problem from the beginning as the coal will continually grind it self to size befor it is fed into the grizzly

Ideally a man in an operators cab operating the pedestal breaker will be the only solution short of using a belt feeder breaker to break the coal in a primary sequence at the mine face or crushing plant eliminating the grizzly and feeding the crushing plant continually.

pedestal breakers and grapples are common place in aggregate quarries and underground mines with ore passes.

A good place to start is www.carhoe.com for examining railroad car excavators that eliminate coal blockages in bottom dump coal cars.

Google in parenthesis (pedestal breakers) and you will see a wealth of information and you should google mining web sites. ■

Hi Ahmed ,

We are coal washery and coal handling plant EPC company in india.

Here we too face such problems where we have the grizzly choked up and not allowing may material to go into the crusher.

Most commonly we drive the end loader over the grizzly crushing the coal and letting it pass.

Otherwise we may engage a pneumatic hammer with one operator who would simply break the larger lumps into the grizzly.

There are hundreds of way we can do this job ............. question is how economical is it going to be. In india people find manpower is cheaper so we have pneumatic hammers. But places where manpower is not cheap people might install a system starting feeder breaker, prior to despatch from mines. ■

No attachements found buddy.........

Send them again. and you may email me one at sandeep@enestee.com ■

please email a copy to me also lzaharis@lightlink.com ■

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