Belt Conveyor for Sodium Chloride Granules

Yes Nylon is OK

Ask your vendor to supply the information on the belt for the environment it will be operating.

I would have concerns with as far as 25 deg.

You have to take into consideration that even thou the angle of Repose is 32 degree, that angle is taken from a stable slope. Things to consider.

1.) You have a slope of 25 degrees and that base is Nylon,.

2.) The conveyor is moving....It no longer stable.

I also do not know what the travel is or width of the conveyor.

I do not know if you will have doctor blades on the conveyor, I assume not.

But you could consider lugs (or short flites that are notch in the middle to accommadate the troughing) on the conveyor to over come this. Bring it up to your suppliier......try to get a minimum performance agreement.

phoenix911

Thanks for your reply phoenix911. The conveyor C/C is 21 metres and the width of the conveyor is 400 mm ( as selected by vendor).

Vendor has selected two roller troughing with 15 deg angle. I propose to ask the following.

1) To review the 25 Deg slope ( as suggested by you)

2) To go in for three roller troughing roller assembly with 20 deg troughing angle

Will it be O.K?

For sodium chloride salt atmosphere , is it O.K to have EN8 shafts for the head and tail drums? Is there any special requirements for the conveyor components for this service.

Thanks to reply

ss2506:

Its hard for me to give you an answer. and even harder for you to hold me to it

Having designed conveyors, I was just conveying (no pun intended, maybe alittle) some issues I had while doing it......Once those little briquettes start rolling, its like their on a tread mill..

How fast will the belt be traveling, you may get some rollback but the speed of the belt may overcome that.

Unless the vendor done it before, its nice to have some empirical information about it.

As far as special requirements, keep in mind about tracking, will there be a A-Section down the middle for keeping the belt on track?

thats all I can do for you.

phoenix911

I have had some experience with belt conveyors while handling coal and ore fines. I would think it advisable to look at how the NaCl is being fed onto the belt in terms of trying to match velocities of the feed particles with the belt speed. It is possible to create an instability and rollback from the feed point if these are not considered..

possible, but one just does know.

I have found, that it is good to see within reason all that could go wrong, but it comes to a point, that conveyor has to be put into place.

NaCl can be hygroscopic if not pure. You may have corrosion issues on metal parts. Crevice corrosion is a problem with this material. Also if you have (bush) bearings of a dissimilar metal you can have electrochemical corrosion as well.

In my opinion the nature of NaCl will not make it slide down the 25 degree slope.

bioramani

The originator has indicated the angle of repose is 32 Deg. So this inclination of 25 Deg sound ok. The conditions may be simulated to check before buying the conveyer.