Re: Transport Of Urea & Melamine: Screw Or Belt?
1) What rate (te/hr)
2) What material density (kg/m3)
3) How far (m)
4) Horizontal or inclined (degrees)
5) Particle size distribution
The above will enable more informed suggestions to be made. ■
Re: Transport Of Urea & Melamine: Screw Or Belt?
Urea prills or granular ??? ■
Re: Transport Of Urea & Melamine: Screw Or Belt?
Dear Mr Wohlbier,
Thank you very much for the quick response.
We were asked by a customer of ours to offer him a fully equipped reactor (design, engineering, procurement and installation) that produces resins based on urea and melamine.
As both urea and melamine are purchased in big bags of 1 ton, we imagine the system for urea to have a screw (or band) conveyor and a bucket elevator at the ground level and a longer screw (or band) conveyor just over the reactor at level 1 (platform of reactor). For the melamine we think that a shorter screw (or band) conveyor on the platform is enough.
The platform is about 8 meters from the ground. The length of the platform urea screw (or band) conveyor is about 6 meters and the one of melamine not longer than 3 meters. The ground urea screw (or band) conveyor should be about 3 meters long.
The urea flow should be 500-600 Kg/min and the melamine's one 300-400 Kg/min.
As you understand the design is not finalized yet. Any suggestion from your side would help very much in order for us to make the offer complete and attractive (financially wise) to our customer.
Notis Koumakis ■
Re: Transport Of Urea & Melamine: Screw Or Belt?
If the product is a powder I would certainly consider an enclosed screw conveyor over a belt conveyor (even if provided with covers). ■
Screwconveyors
Could we be of any help engineering the screw conveyor part ?
Have a look at our website www.van-beek.nl ■
Re: Transport Of Urea & Melamine: Screw Or Belt?
Dear Mr. Notis Koumakis:
Given the details you provided, I would recommend the use of a Serpentex belt conveyor system. This would allow you to load directly from the bags and discharge directly above the reactor without grinding the granules. Also, this conveyor style will provide you with good spillage control (provided you do not overload the sections).
Regards, ■
Re: Transport Of Urea & Melamine: Screw Or Belt?
Dear Mr. Notis Koumakis
Please provide full information about the material characteristics i.e. (1) material size, (2) material size gradation, (3) bulk density, (4) Abrasiveness, (5) Corrosiveness, (6) Susceptibility to degradation, (7) repose angle, (8) whether hygroscopic, etc. and your certain statement about the nature of this material and specific requirement in handling the material.
For example, if it is urea prills from fertiliser plant and is to be marketed then it should not get degraded. In this situation belt conveyors are regularly used running at low speed about 1.25 mps, or less. It’s loading and unloading etc. are also designed very carefully so that minimum portion of the material gets degraded. If it is this kind of material then use of screw conveyor is ruled out. But if you are referring to different physical condition of urea for some other purpose then it could be a different case. The material particular condition and purpose makes remarkable difference in suggesting the type of equipment, particularly when such materials are of special name and nature.
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.
Email : parimul@pn2.vsnl.net.in
Tel.: 0091 (0)20 25882916 ■
Re: Transport Of Urea & Melamine: Screw Or Belt?
"We were asked by a customer of ours to offer him a fully equipped reactor (design, engineering, procurement and installation) that produces resins based on urea and melamine."
So the application USES urea, it doesn't PRODUCE it. So I'll stick with a screw conveyor over a belt conveyor. ■
Screwconveyor
In that case please sent us some details (drawing etc) info@van-beek.nl
We could provide you with IIID design if you are interested. ■
Transport of Urea & Melamine: Screw or Belt?
Dear Friends,
I have a question referring to the most convenient method of transporting urea and melamine. Screw or belt conveyor?
Who can give me advice on this?
Thank you and best regards
Notis Koumakis
Greece ■