Belt Conveyor Rule of Thumb Specific energy (kWh/t.km) 2

[tarekzad]

I'm looking for a Rule of thumb related to Soil/Bulk handling on belt conveyor

Let's assume that we have limestone soil (sand and rock ) and must transport it 10 KM through a Portable/modular Conveyor belt or using ZIP line/Overland belt conveyor.

Is there any research and scientific paper or technical experience that can provide some kind of trusted values about the Specific energy (kWh/t.km)


Looking for your best experience and knowledge

Regards;

Tarek



the basic data is below

Material: Excavated Soil , Limestone Rock , Density = 1.6 Mt / M3 , Water Content = less than 2%
Practical Size: Less than 3” [75 mm]
Flow Rate: 250 to 350 M3 per hour.
Conveyor Belt Width: 50 to 60 cm
Conveyor Belt Shape: Trough Belt Conveyor
Trough Angle: Start from 30 Degrees.
Belt Speed: 2 to 5 meters per Sec.
Angle of transportation = 0 - flat ground level.


Tarek Barham
+971563188219
tarek@zadconsult.com

 

[dvd]

You could get some help from the folks at Overland Conveyor Co. -

https://www.overlandconveyor.com/belt-analyst

Also, CEMA has methodology in their book "Belt Conveyors for Bulk Materials"

Belt suppliers also have belt sizing software - Conti, Fenner-Dunlop, Goodyear

You can save money on operating expenses by selecting a belt with low rolling resistance, this will also save on components due to lower belt pull forces.

Are you building a new conveyor, or replacing belt on an existing?

 

[tarekzad]

Dear DVD

thanks for your recommendation, however, we are not a belt conveyor designer, we are an earth-moving Company, and we need to conduct preliminary viability and feasibility study, that is why we are concerned about high level cost as CAPEX .

Tarek Barham
+971563188219
tarek@zadconsult.com

 

[dvd]

Tarek -

Overland Conveyor Co. would be able to provide preliminary studies for your project.

Conveyor Dynamics Co. also provides these type of services.

Beumer Group would be able to analyze and provide quote for system.

 

[PersonalProfile]

The following may be of interest, as a start:

Coal land transport -Economics of options in eastern Australia

Illustrative cost curves [including for conveyors] developed are based on the total transport option costs that are thought to
influence each transport option for a majority of applications.

https://www.researchgate.net/public...rt_-Economics_of_options_in_eastern_Australia

 

[LittleInch]

If you can avoid building supports and can literally run it along at ground level then it looks pretty feasible.

That's a good report linked above.

Usually issue with belts / conveyors is contamination / spillages and they don't like going round corners plus are there any crossings / animal passages required?

But a conversation with one or more vendors will get you some more reliable data.



Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[MJCronin]

My thoughts:

1) You ask about a "Specific energy (kWh/t.km)"... I do not believe that such a parameter exists for belt conveyor design because of the various belt types, loadings, elevation changes, etc .. It sound like you want a preliminary motor hp number ... Your question, in my opinion, is vague and like asking for a "miles per gallon" rule for "vehicles" ....

2) Ten kilometers is a long way for a single belt, IMHO ...A single belt 10km long develops start-up and shut down issues, IMHO .. Don't you want to break this study up into multiple belt conveyors ? Perhaps six or eight ? This would enable belt replacement, inspection and maintenance to be more manageable. A belt conveyor considered by the industry to be "long" is typically 0.5 - 1.0 km ....

3) What is your desired tons/hr ? ... Why are you reluctant to post this ?

4) At a lengthy ten kilometers, (and with level terrain) have you considered a relay system of trucks ?

Strongly suggest that you begin conversations with a belt conveyor vendor, as was suggested above

Keep us posted on your final choice, if you don't mind



MJCronin
Sr. Process Engineer

 

[dvd]

10 kM standalone belt conveyor is doable - Beumer has done many this long and more. Startup and shutdown issues need careful consideration. All of the references listed above can help with this problem. Multiple conveyors result in multiple transfer points which have issues of material flow, material degradation, belt wear, getting power to intermediate points, etc. Trucking does not pay except for very short duration projects. Beumer has literature and background in the justification of conveying over trucking. Follow the hyperlinks for more info...

 

[tarekzad]

Dear DVD
surly we are not planning to have the 10 KM of belt conveyor as one flight, actually, it will be divided to 300 meter or 700 meters flights

the aim form my questions is: we need to check the feasibility of belt conveyors over truck transportation, the main cost of operation in conveyors is Electricity, thus i'm looking for SEC - specific Energy Consumption as Ws/kg/meter or Kwh/Ton/KM

Tarek Barham
+971563188219
tarek@zadconsult.com

 

[dvd]

Why wouldn't you use a single flight if you could? Less transfer points to build (and plug), less belt loading wear at those transfer points, only drives at head and tail end, horizontally- and vertically-curved belt paths are routinely installed.

 

[tarekzad]

Dear DVD

the application of the conveyor will be for raw material handling (excavated soil ) so it is not a mining nor a cement nor a crusher.

the flights and segments of conveyors shall be movable /Shiftable

Tarek Barham
+971563188219
tarek@zadconsult.com

 

[LittleInch]

Try sticking your parameters into this?

https://www.sparksbelting.com/blog/understanding-conveyor-belt-calculations

Might be the wrong type of conveyor but at least its a start point.

Its estimating the friction effect on the multiple roller which is where you need to start from in terms of first principles.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[tarekzad]

Dear Little inch

There is no calculator and the mail form that you have to fill out to request the calculator doesn't work

Tarek Barham
+971563188219
tarek@zadconsult.com

 

[LittleInch]

But there is a formula.

You might need to go to first principles and figure it out.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.