Hi AHMAD REZA MADINEH,

To empty a hopper - open the bottom gate. The "best way" depends on what you are trying to do

1 - dump the contents into a bulk tanker

2 - dump the contents into a bulker bag

3 - transfer the contents onto a load-out conveyor

4 - any other process

What can you tell us about molybdenum concentrate? It is a fine particulate product <400 um and 8 - 12% moisture.

5 - is fugitive dust a problem?

6 - is rat-holing and hanging up a problem?

7 - what can you tell us about its handling characteristics?

Please advise - Sgt John.Rz

http: //au.groups.yahoo.com/group/bionicresearch ■

IMO 1.2 te/hr is a low rate so any hopper will need a feeder unit.

As there have been flow problems with the material it is necessary to have the material tested for it's flow properties. These can be used to establish a suitable hopper design either mass flow or core flow and then select a suitable feeder.

Alternatively, ignore the flow properties and use a mechanical discharger. ■

Thanks for the responses.

It sounds like the product is similar to Alumina concentrate. At Kwinana we reclaim it through a rotary valve onto a screw conveyor, and then use air-slides to transfer the product to our bulk vehicle loading facilities.

We used to use bulker bags, but now use bulk tanker vehicles to handle greater volumes.

I assume that the aero-mechanical is a similar process - a fluidised bed of product running down what are effectively launders. By blowing in compressed air under the porous membranes the powder can run like a liquid, because it is fine particulate.

We also use air-slides under flat bottom bins as a reclaim system

Regards - Sgt John.Rz ■

If I was assuming what an aero mechanical conveyor was it would be this ....

http://www.spiroflow.com/amc/aeromech.html

So what are we talking about??? ■

John may be, but is AHMED??? ■

HELLO AHMAD REZA MADINEH,

This sounds like an application for a piece of equipment called a Sword Nozzle. This nozzle is used with an air cannon which blasts compressed air via this isobaric sword and causes the material to fluidize assisting in the flow of the material. This sword differs from regular single point nozzles which are not always placed in the right position to hit the bridge in the exact position. Please see attached file.

Good Luck.

Lou Gutierrez

Clean Plant Engineering

Attachments

swordJPEG:forum_attachments/file_container/sword.jpg (BMP)

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Hello Ahmad,

WTW Americas Inc has 10 machines working in Molymet in Chile, and 5 in Molymet in Belgum for Molybenum concentrate.

We would be happy to discuss the capabilities of our BinEX Rotary Bin Discharger with you.

Attached is our brochure for this product but please also feel free to visit our website at

href="http://www.wtwamericas.com" target="blank">www.wtwamericas.com for additional information.

Kind regards,

Dee Flynn

WTWAmericas Inc.

130 Hunter Street West

Peterborough, ON K9H 2K8

Tel: (705)749-3544

Fax: (705)740-1775

href="mailto:dflynn@wtwamericas.com">dflynn@wtwamericas.com

href="http://www.wtwamericas.com" target="blank">www.wtwamericas.com

Attachments

wtw americas - binex brochure 2007 (PDF)

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please suggest us for above ■