Corundum Conveying
I need any help about pneumatic conveying of corundum (Al2O3)
most probably dense phase.
Particle size is about 3-6 mm and mohs hardness is 9!!
bulk density is approx 3t/m3
Conveying distance is about 25m vertical, 50m horizontal with
4pcs 90deg bends.
capacity should be about 10-15tonnes/hour
What kind of a system should i select, pipes, bends, air requirements, anything?
thanks to all who reply ■
Corundum Conveying
The hardness of the product will inevitably cause errosion of the pipeline and components. Clearly this product wants to be conveyed at the lowest possible velocity.
A pneumatic conveying test program would seem to be in order. Suppliers of systems will sometimes waive the costs if testing leads to an order for equipment.
Understand that a successful pneumatic test is part of the answer but it is not the entire answer. Compare the installed / operating costs of the pneumatic system with a mechanical system such as a tube conveyor. This approach will result in the most cost-effective solution to your problem.
Dennis Hauch ■
Re: Corundum Conveying
Please use only a low velocity dense phase conveying for this material. Keep this low velocity throughout the conveying line by stepping-up the pipeline diameters. This material is very abrasive. Make sure that all of the equipment and pipeline components, specially the bends, are highly abrasion-resistant. We can send you guidelines for selecting these materials if you need our help.
Regards,
A. T. Agarwal
Consulting Engineer
Pneumatic Conveying Consulting Services
Email: polypcc@aol.com
Ph and Fax: 304 346 5125 ■
Re: Corundum Conveying
we can design and supply very low velocity Dense phase conveying system. If interested, please visit us at www.protechengineers.net
Best Regards
a.k.dewan ■
Conveying Corundum
The particle size and density of this material is such that you are looking at 20 m/s (4000 ft/min) as a minimum for conveying in dilute phase. As a consequence you are likely to need a basalt lined pipeline and alumina bends in order to minimise maintenance problems. You will only minimise the erosive wear problem by this means - it will just take longer to wear out. This is a viable solution, that is often used, if you must use a dilute phase pneumatic conveying system.
If the material is regularly sized, has minimal fines and is not too angular in shape, such that it has very good permeability, it is possible that it will convey quite naturally in dense phase and hence at low velocity, but you would need to undertake tests to verify this. You will then be into abrasive wear which is generally not as severe as erosive wear in pneumatic conveying plant. ■
Re: Corundum Conveying
Most grades of Al2O3 are generally considered as a troublesome material when pneumatically conveyed. Many commercially available systems are in the market to convey but the most successful system is the pipe in pipe low velocity dense phase system originally patented to Alissia (correct me if I am wrong). The pipe in pipe takes care of blockages and since it is a low velocity no excessive wear. If u want to convey Al2O3 trouble free go for this type of system. I am sure some one will direct you to a vendor who will be able to supply you with this kind of system. ■
Al2o3 Conveying
Dear Sir,
we are using on line fluidizers at pre designed location.This technology is better than pipe in pipe system , as the inner pipe wears out very fast and you wuld not know the exact type of failure.so booster / Fluidizers fitted on the conveying pipe is better solution.You can control the flow and pressure at each fluidising point.
best regards
a.k.dewan ■
Corundum conveying
I need any help about pneumatic conveying of corundum (Al2O3)
most probably dense phase will be required.
Mohs hardness is about 9 !!
particle size is 3-6mm and the capacity is about 15ton/hour
25m vertical, 50m horizontal and 4 pcs 90deg bends.
any suggestions on the system to be selected, air requirments, conveying velocity, pipes, bends
thanks to all who reply ■