Conveyor Design

ankurshah
(not verified)
Posted in: , on 26. Jul. 2010 - 23:19

Hello everyone....

I am studying on IS 11592 Belt Conveyor Design

Therein I have doubt in using some formula.

Like...

Weight of material per meter ( Mg)

Mg = 1000 x density x Q / V wherein Volumetric Capacity Q = AVK

Some people use this formula as Mg = Capacity (TPH ) / V

So which one is preferable to use. Because is makes a major difference in answer for the same criteria. Other formulas of Resistance are also derived on this basis.

Kindly clarify this matter.

Re: Conveyor Design

Erstellt am 26. Jul. 2010 - 09:52

It all depends on how you feed your belt conveyor.

If you have a gravimetric feeder then the ton/hr onto the belt is controlled so you can use Mg = Capacity (TPH ) / V

If you have a volumetric feeder then the m3/hr onto the belt is controlled. So in this case the ton/hr is determined by the density. If the density is a constant value then the ton/hr is constant. But if the density can vary then the ton/hr can vary and it power is determined by the m3/hr and MAXIMUM density so you use Mg = 1000 x density (MAX) x Q / V

Re: Conveyor Design

Erstellt am 9. Aug. 2010 - 05:26

Dear Shri Ankur Shah,

You will be fixing a design capacity for conveyor. This means your all calculations will be on the basis of this design capacity. You are free to decide design capacity 10% or 20% or 30% etc. more than the guaranteed capacity. The reader may find value of 30% etc. as very abnormal, but if you are designing a stone quarry type of simple conveyor where there is poor control on feeding rate, and conveyor capacities being small, like 50 mtph etc., then people do take such high percentage. If you are designing high capacity and high class conveying system, where feed control is specific and positive, the design capacity can be just 10% more than the guaranteed capacity.

Once the design capacity (Qd) is fixed by you, then material mass Mm (in kg/meter) is given by following formula :

Mm = Qd / (3.6 v )

Where v is in mps, Qd is in mtph

Everybody knows this formula.

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.

Pune, India.

Tel.: 0091 (0)20 25871916

Email: parimul@pn2.vsnl.net.in