Re: Calculation Of A Belt Chute Cross Section ?
It depends on the geometry of the chute & trajectory, but the rule of thumb which I have used for years is 100-150 CFM per sq ft of chute cross section. If you throw the trajectory straight down the middle of the chute you might get up to 200 CFM. Put in a rock box & it will be less.
I always check these numbers if I come across a problem chute & they are a pretty good guidline. ■
Probability Of Arching
Hi leonero,
As I understand it your question is - what is the probability of getting your slabs lock together to form an arch, and block the chute?
1 - What is the width between skirting plates? I guess about 36 inches. So your maximum slab size to opening width across the belt is 36/18 = 2. It would be more comfortable if it were 2.5 to 3.
2 - What is the probability of an arch forming in the other direction? About the same. So the minimum chute depth should also be 36" or better.
3 - Are you going to absorb impact at the belt, or will you guide the slabs onto the next belt? You may need to provide some extra for ricochet of your lumps at the impact zone.
4 - What does your trajectory look like?
Regards - John.Rz
Conveyor Calculation http://www.cospire.com/browse.aspx?id=4317 ■
Calculation of a belt chute cross section ?
Good evening,
I'm trying to calculate the optimal size (cross section, dimensions...) of a chutework between two conveyor belts, 48" width each. The expected throughput is 1200 stph, material is hard crushed stone with a size expected around 0 x 12", and certainly slabby material, maybe 15-18" in one dimension.
CEMA gives indication on the minimum width, but how to determine the cross section to make sure the 1200 stph will go through the chute without building up ?
Thanks for your suggestions ! ■