Coal in Transfer Chutes Tubular vs. Square

One advantage of using a square or rectangular chute is that abrasion resistant liners can be bolted to a flat surface.

What size is the coal? 6" max, 12" max or ?

Is the chute vertical or at a slope?

Are you worried about the chute plugging up? If so, bigger is better as long as the slope stays the same.

3/4" Minus Coal after the crusher, dropping 15 Ft. Fabricated with CCO Overlay Plate.

19" Diameter. Severe Wear at Belt Conveyor Load Chute. 800 TPH 50lbs Cu Ft.

Applachian Coal.

Thanks for the info. I don't think I can offer any more help.

I used to work 20+ years ago for a company that made coal sampling systems. The tonnage on those chutes was way less than what you're seeing.

Has your local steel supplier offered any ideas?

Are you worried about damage to the coal? Fines or smaller size generation?

No, not worried about damage to the coal. Worried about wear abrasion and flow volume through small diameter.

Something to consider:

After replacing numerous sweeps made of carbon steel for a pneumatic conveyor system we were approached by a rep for a major rubber company, who recommended heavy walled transfer hose. This hose outlasted the metal by a great margin. This high wear resistance had to do with impingement factors. The only negative was that the hose had to be grounded due to the static generated.