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Originally Posted by rekhawar

Dear all,

How do you find use of Super Sucker for Bottom cargo ( I Ore/Pellets 0 - 40 mm, Met Coke 0 - 80 mm) from Barges in Jetty? The quantity is approx. 100 - 150 MT at any time.

Does it degrade the material more than collecting by Payloaders and lifting by Grabs?

Regards

Greetings and salutations Rekawar,

It amounts to a calling it a potato or potatoe considering how much degradation you are willing to tolerate.

A lot of folks simply use solid black drainage pipe to add useable length to the vacuum system

and reduce the work needed or involved in the process by pulling the lightweight hose to the work.

A five hundred foot roll of solid(no perforations) drainage tubing goes a long way

After it is vacuumed into the "super sucker" it bangs around inside the tank until it is off loaded and dumped. depending on the size of the super sucker you are looking at 7-10 full loads.

Depending on material weight, moisture content, etc. you could use a compressed air line or a big wheeled leaf blower to drive the material to vertical the suction tube and mast or add more flexible tubing to speed the cleanup.

If you already have a super sucker the benefit is there as you could leave it dockside discharging to a cyclone and all the while discharging to the cyclone which dumps into a take away truck by gravity etc.

The Boom on the truck will still be of full use and swing etc.

A simple matter of adding hose and hose connections from the suction side of the super sucker to the top of the cyclone inlet and its done.

The inlet vacuum negative pressure(Hg) at the suction pipe will have to be boosted a bit(increased)but that is not a problem as it will be pulling through the cyclone itself and the fine dust will continue on into the super sucker tank.

It is simply an "either, or" question)

lzaharis ■

You will have to whistle 40mm iron ore along at quite a fair lick to keep it airborne. That will result in high wear. Eighty mm pet coke particles will call for a pretty large pipe.

Your particle spectrum is probably too broad for a single system.

Have you worked out the power requirements for either product?

In a pneumatic conveyance there is potential for product degradation at every bend where the product impinges at high speed.

During your alternative unloading method there is a single impingement of product with the payloader bucket, another when the product is dropped onto the pile, followed by a cutting action when the grab engages and finally there is impingement when the grad discharges the material. Compare those 4 actions, which only affect a very small surface zone, with the interparticle activity and containment impacts encountered in a pipeline conveyance and the answer should be rather evident.

Don't let sales people convince you that dust is proof of degredation. Most of the dust is there all the time. The pipes just hide it...in an environmentally admirable way. ■