Modern Chute Designing
Dear all,
Can I have information about curved chutes or linerless chutes in Material Handling Systems?
Regards ■
Re: Modern Chute Designing
What information do you seek?
If you were at Bulk India you would have observed my keynote talk on the advantages and installations using curved chutes.
Unfortunately the papers did not get published.
I predict curved chutes will become the standard in the future.
See our website for configurations and publications. We will shortely add a significant number.
Lawrence Nordell
www.conveyor-dynamics.com ■
Re: Modern Chute Designing
Dear all,
I have seen the 10 pages in the web site - www.conveyor-dynamics.com. Those are very good study material.
However, the concern is mainly about the wear & tear of chute liners or the life of belt.
I am looking for transfer chute design, in which the degradation of material will be least. Conventional wisdom says if material strikes on the material instead of Liners, the degradation will be minimum. Hence we go for rock boxes.
Does the curved (parabolic) chutes also attend to the issue of Material degradation?
Please note that I am not looking for the perfect liner but the best chute profile so that all impacts are avoided or their effect is minimised. ■
Re: Modern Chute Designing
DEAR REKHAWAR,
We can and do quantify chute liner wear, belt wear and material degradation which comes from the chute geometry optimization.
DEM modeling can define the energy spectra by particle size and frequency of collisions to render a breakage function. There is a process that must be followed for each product group such as met coke. The product strength needs to be defined as a function of impact and shear actions.
DEM can tabulate all collisions for all particle groups.
Chute geometry often is a compromise between guaranteed flow, wear, and degradation. Sometimes manual or motorized surfaces can be adjusted to suit or optimize the objective.
We do understand the process you seek and have done so in many material systems. We have published on these points in chutes (eg. Palabora -- increasing belt life by 10 fold; alternative designs to minimize coal and iron ore lump degradation = fines generation)
We await your further interest.
Lawrence Nordell
email: nordell@conveyor-dynamics.com ■
Modern Chute Design
“Generated Fugitive Dust Emissions are largely eliminated.”
This is based on proper design of conveyor transfer chutes. Using DEM, material testing, chute design know-how, air flow technology, and dust generation is minimized to the lowest level as acceptable to your local environmental agency. Do not use any costly dust collection or dust suppression. ThyssenKrupp Robins C.U.S.T.O.M. Chutes TM
If you have any detailed questions please send your e-mail. ■
The Perfect Chute
Gantlemen.
Please Consider-
The perfect chute is a chute where the material do not get in contact with the chute, but is free falling or flowing. ■
Chutes
try Arnold s Wolongong university articles on design of curved chutes.
Also measure the critical breackage velocity and define your free fall height.
A number of materials change their breackage profile when reaching a certain velocity , see if you can define your criticall values and the redesign to keep your impact velocity below.
marco ■
Desing Of Chute...
Hi!,
I am aware of the problem you seem to be facing currently. Martin Engineering - USA, have specialised chute desing and fabrication in their product line apart from the belt transfer point products all are more aware about. These are specially engineered chutes, made to increase the flowability and effeciency of the materials being passed through it. We could assist you with your request for a solution of the same, as we can process this requirement with Martin USA.
We are the sole authorised representatives of Martin Engineering for India and the neighbouring countries, so let me know if you are interested.
We have branch offices all over India and I could depute one of our engineers to visit the site and study the problem.
Await your response...
Manoj Joseph Kallarackal
Dir- P&O ■
Modern Chute Design
To minimize material degradation the material must be handled gently. This is influenced by conveying speed and transfer. Through the transfer, material speed and direction must be controlled to minimize impact and velocity variations that cause (thinning or stagnating of the material stream) air displacement, thus dust. Material on material flow indeed produces the least degradation.
WEBA chutes by M&J Engineering address these issues directly. The WEBA cascade chute embodies all of the right characteristics. To learn more please go to their web page and contact their experts.
Go to www.mjeng.co.za
I am sure you will find this helpful.
Joseph A. Dos Santos ■
Modern Chute Designing
Dear all,
At many threads in this forum, I come across the above term. I would like to know more about the latest trend in designing chute.
We are loosing valuable cargo by degradation while transfering it from our jetty to Yard and than reclaiming upto stock House. The extent of Fines generation is 10 - 12 % in case of Met Coke.
We have provided Stone Boxes in all the chutes and height of fall is restricted to 2.5 to 3 mtrs. But certainly our chute are of conventional type.
I need information on modern chute designing and details of agencies to carry out study and suggest better chute profiles in our set up. I would request experts like Mr. Lawrence Nordell and other esteemed members of this forum to share their experince with all of us vide this forum.
Regards ■