Originally Posted by MOHSEN

but it’s clear that these equations are wrong.

How and why? ■

The speed is highly dependent on your design criteria. Dust control, spillage control, belt tracking, et al.

Your tonnage is very light. Speed should not be the limiting factor. Once the conveyor width falls below 700 mm, there are dimishing returns to go faster. In addition, the conveyor length and geometry needs to be understood.

To control dust, noise, spillage, and belt capacity the densities, particle sizes, feed and receiving conveyor together with their chute geometries need to be given. Chute geometry design goes with the belt width selection and belt speed.

Thus, there are many details that govern the selections. ■

We do not use a "proved equation" to determine the necessary attribute of loading chute and receiving conveyor. We apply the requested information sent to you, and apply Discrete Element Modeling (DEM) procedures to determine product stability, et al.

The DEM code integrates all necessary functions and behaviors to render a acceptable solution. ■

Originally Posted by MOHSEN

how can I have this software?

I'm sure Mr Nordell could arrange to sell you a copy ■

Dear Mr. Mohsen

you consider that the max belt speed is 2 m/s that common used in steel plant and if you want design belt conveyor you can use below reference.

1- CEMA

2- DIN 22101

3- Conveying machine

If you have any question you can mail me

mehdiohadi@yahoo.com

Best regards

ohadi ■

Originally Posted by MOHSEN

Dear Mr./Mrs.

I’m looking for a coorelation between different parameters in belt conveyor design to find maximum belt speed. I’ve just found something like that in CEMA ver.6 (Eq. 3.7 & 3.8) for spillage and slip-back, but it’s clear that these equations are wrong.

The first print of the 6th edition is full of mistakes. There is a free correction pdf available for download on the CEMA website. Without having looked into the specific equations that you mention above, maybe this correction file helps you.

(DEM is a good idea, though.) ■

The question has many answers as is evident by the responses.

CEMA has not made such a comprehensive assessment of the general formulae. Much of modern design criteria is vested in those designing and evaluating designs who approach the edge of what is known.

There are conveyors operating at up to 15 m/s. Such high speed are not considered normal. Even half this speed is considered high.

There are times which it is appropriate and times it is not. The selection process is not a diatribe for the forum. So much apriori knowledge about the needs and politics must go before you explore any limits.

If you are not seeking limits, then what are you seeking? ■

Dear Sir,

How people are comfortable with CEMA 6th. edition, I do not know. But for selection of belt speed I can suggest the following.

1. For Burnt lime............... 1.0 m/sec max.

2. For Coke........................ 1.2 to max. 1.5 m/sec

3.For other materials you may select based on the guide line given in your stabdard.

Regards.

A.Banerjee ■

Dear Sir,

How people are comportable with CEMA 6th. edition, I do not know. But please follow the following belt speed as given below.

1. For Burnt lime .................1.0 m/sec

2. For coke................. 1.2 to 1.5 m/sec max.

Regards.

A.Banerjee ■