Silo feeding

Posted in: , on 4. Dec. 2002 - 06:13

A fine material is to be pneumatically conveyed to storage silos.The material is transferred from surge bins.Each bin is provided with a conveying line.It is required to transfer material simaltaneously from two bins into one silo to meet the process requirements downstream. Is this a general practice? Are any specific aspects to be addressed which otherwise do not arise if the silo is fed by one line only?

Vishy.

Peter Hoefler
(not verified)

Re: Silo Feeding

Erstellt am 4. Dec. 2002 - 03:10

If a single convey line can handle the rate, you should use one line. That is of course if it makes sense in routing. If not, and you must use two lines, just make certain that you have enough bin vent capacity to handle both lines at once. Also make certain that there is proper silo vacuum/pressure relief to handle both lines.

Pete Hoefler

Attachments

moovinatorfamily9 (JPG)

bvsarma
(not verified)

Re: Silo Feeding

Erstellt am 4. Dec. 2002 - 11:34

Dear Vishy

This all depends on what is the fine material. It is a common practise to convey milk powders from multiple locations to a single location such as a packing machine. Vacuum Dense Phase Conveying System is generally best suited for multiple pickups and a common destination.

For more details please see our website<www.nucon.com> that describes convey systems

or

contact us at sales@nucon.co.nz> for more information

regards

BV

biplab K. Datta - POSTEC, Norway
(not verified)

Re: Silo Feeding

Erstellt am 5. Dec. 2002 - 09:05

Hello Mr Vishy,

There is no reason why two pipelines can not feed the same silo !

I am not certain about a few things !

Are the two pipes feeding the same material ?

Is the powder is abrasive or not !

Is it the locations of the two bins that force use of two pneumatic conveying lines !

Is the question of segregation taken care of during filling of silo !

best regards

Feeding Silo From Two Sources

Erstellt am 6. Dec. 2002 - 03:10

Vishy there's no problem feeding a silo from two seperate source bins. You will want to make sure that you have adequate filtration. If the two sources use seperate conveying systems and could run at the same time the silo bin vent needs to be sized to accomodate the total air volume. You'll also want to take into consideration the materials you are handling and what they require in the way of filter media.

This is the short answer to a question that really raises several other questions.

Best Regards

Allen L. Powell

Silo Feeding

Erstellt am 7. Dec. 2002 - 07:11

Thanks to all of u for the replies to my post. I gather that feeding a silo from more than one source is OK provided the vent filter is sized to take care of the total air flow.

Incidentally, Biplab, both the lines convey the same material and the material is ash which is abrasive.

Regards,

Vishy.

Re: Silo Feeding

Erstellt am 13. Dec. 2002 - 05:53

A simpler and less costly solution would be to use a single conveying line to go the silo with feed from two separate conveying lines from the two hoppers.

Regards,

Amrit Agarwal

Pneumatic Conveying Consultants

Silo

Erstellt am 5. Mar. 2003 - 08:13

The points that needs to taken care while feeding from two ponts are:

1. Sufficiently designed de-dusting system.

2. Materials being fed are same.

3. Presuming that the extraction is continuous, the feed material should be evenly discharged for even distribution.

P R Athreyan
Guest
(not verified)

Belt Cleaners

Erstellt am 13. Oct. 2003 - 12:01

Have seen your post.

Do not have books but references.

We are manufacturer of a wonderful belt scraper called "Dirt Whacker". Our extension in ALL companies in Europe but as well as Africa makes our scraper n°1.

The "Dirt Whacker" is the only one giving 100% efficiency on CLIP belt and REVERSIBLE belts, that is why we won the silver jubilee of the best mining invention.

REVERSIBLES BELTS : thanks to the parallelograms, the scraper can reverse himself at the same time than the belt is reversing !! You do not have to stop the belt anymore nor make some scrapers modifications. Everything will be made instantly !!

CLIP BELTS : our blades are very special. Indeed, our tungsten carbide blades are brazed between 2 mild steel. When the clip hit the scraper blades, this clip will first hit the mild steel and the rubber pipe of the scraper will amortize/compensate the chock. We guarantee the efficiency of that worldwide patented system.

FOOT PUMP : the installation is so easy that you just need a foot pump to inflate the scraper ! We give you this foot pump for free. Just inflate the scraper between 400 – 600 grams. That is all you have to do. The blades will scrap the belt wonderfully !

QUICK BELTS : we guarantee our scrapers for belts whose speed reach 8 meters/second without any problems !

Our reference in chemica/mining/siderurgies and Power stations companies are various and the countries where we are homologated and fully standardized are for example : Tunisia (all chemical groups

and phosphates extractions + cement plants), Morocco (all chemical groups and phosphates extractions + power stations and cement plants), Algeria (siderurgy + phosphate extractions) + Senegal (chemical industries + extractions), Mauritania (iron), Gabon (manganese), Congo (diamonds + copper/cobalt), South-Africa (diamonds, platinum, coal,…) but as well as in all Europe with applications such as in Belgium where we were the only 1 to be able to supply for a size of belt 4000 mm.

Size of the scraper 4000 mm in 100% stainless steel. (Pictures on demand by email). France, Benelux, UK, Germany, even Hong-Kong and Thailand recently ,…

No maintenance anymore.

We hope to have positive news from you.

PLEASE VISIT OUR WEB SITE : www.matam.be

In the meantime, receive, our very best Regards.

GERALD COENEN

General Manager

MATAM S.A.

32, Drve des Pins

B-1420 Braine l'Alleud

Belgique

Tl.: +32.2.354.67.34

Fax : +32.2.353.00.21

E-Mail : info@matam.be

Web Site : www.matam.be

Dual Feed In Silo

Erstellt am 20. Feb. 2004 - 06:00

y agree that dual feed is not a problem from the conveying part provided you have sufficient venting and dust collecting, now when transporting some materials the solids flow in the bin can be spoiled if two feed points are used .

take a carefull look into the solids flow in the silo, see if impact consolidation, deareation , or segregation can occur.

You might find out that your silo flows sideways , or that one side doesent move at all . Try relocating your insert points or impact plates to eliminate or reduce assimetrys, spread out the inlet stream or sometimes is even better to create a larger assymetry. to avoid arching.

Marco

TECMEN Consultant in: Sponge Iron (DRI) handling Sponge Iron DRI Automated Storage Firefighting and Root Cause Analysis Pneumatic Conveying Consultants Phone 5281 8300 4456.
andrew123
(not verified)

Re: Conveying

Erstellt am 23. Feb. 2004 - 09:53

Gough Engineering manufactures and exports a wide range of materials handling and process equipment for the food, pharmaceutical, chemical and plastic industries. Our strengths are based on a unique range of bucket elevating, conveying and distribution systems (Swinglink, Slidelink) and a highly sophisticated range of vibratory sieves and separators (Vibrecon). Swinglink bucket elevators/conveyors for high volume transport and distribution of powder and granular products. Slidelink bucket elevators/conveyors for transporting and distributing granular, flaked or friable product with minimum degradation.

Why not take a look at our website via the link below...?



Mr. A Wilkes,

Market Research Officer,

Gough & Co. Engineering Ltd.,

Newstead Industrial Estate,

Stoke-on-Trent,

Staffordshire,

England.

ST4 8GE.

Tel: (01782) 654799

E-mail: wilkesa@goughengineering.com

Website: www.goughengineering.com

Silo Feeding.

Erstellt am 1. Apr. 2005 - 02:28

Hi, all.

In my sort experience, I have faced this problem once.

Was filling silos from silo trucks, conveying fly ash. The main problem that whe had is that the silo seemed to blow up because of the preassure. (3 bar of each truck). The solution was to make areation pipes double size than the size of the pipe that filled the silo.

good luck vishy

Silo Feeding

Erstellt am 1. Apr. 2005 - 03:43

dear fran, you could have stopped the silo blow up by providing silo pressure release valves on the top of silo.so if you have these valves the pressure does not count.

regards, anil

Re: Silo Feeding

Erstellt am 1. Apr. 2005 - 04:47

Hi anil!

With no pressure release valve installed, probably, the silo would have opened like a flower . But the point is that with the pressure valve opened I didn´t have any dust control at all.

-----------------------------------------

dust happens!

Welcome

Erstellt am 3. Apr. 2005 - 02:42

Fran Welcome to the club "descorchadores de silos".

It is a more frequent event that it seems!

Yes, you should have enough venting to cope with all your sources.

It is a life-changing experience.

Regards,

Marco Flores

TECMEN Consultant in: Sponge Iron (DRI) handling Sponge Iron DRI Automated Storage Firefighting and Root Cause Analysis Pneumatic Conveying Consultants Phone 5281 8300 4456.