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Join Date: Apr 2008
Location: Brossard, Quebec, Canada J4X 2A6
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Looking For a Mechanical Process

01/18/2012 4:19 AM

Good day everybody

Is there a type of pulverizer or ball mill or any equipment that will take a 2"X2"X3/8" peace of glass and pulverize it to minus 400 mesh? (pilot plant 300 lbs per hour)

This is a piece of equipment that may be used as part of an experiment conducted by a Quebec University and myself for a new process and for not sending glass in landfill sites.

Thank you for any aid that you can supply to us.

Hubert Lefebvre

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Guru
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#1

Re: Looking For a Mechanical Process

01/18/2012 8:21 AM

There are many manufactures that make crushers and pulverizers for the recycling of glass. Some down to .1mm. Most in the size of sand which varies from course to fine. 400 mesh is finer you will need to address this with a manufacture. Why so fine?

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#2

Re: Looking For a Mechanical Process

01/18/2012 1:53 PM

I'm thinking "Atomization."

A nozzle with an inner port for pressurized gas, and a concentric outer port for molten glass. The gas may have to be inert, or maybe just compressed air. Experimentation will tell. Also the outer port might need to be a ring with multiple ports a the optimum angle to the air nozzle. This too will take some experimentation, but the prototype could be made with some intelligent intuition.

The material for the nozzle will most likely have to be ceramic.

If you are working with a glass manufacturer, they will know a lot about moving molten glass.

Luck

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#3
In reply to #2

Re: Looking For a Mechanical Process

01/18/2012 3:23 PM

PMoon,

Thank you for your suggestion but I forgot to say that because of certain chemical contents, the glass can not be melted because it will cause harmfull emissions.

Best Regards,

Hubert

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#7
In reply to #3

Re: Looking For a Mechanical Process

01/19/2012 8:55 AM

We have a machine that reduces glass in many forms to a fine dust or powder. It is dependable and easy to run. Contact me at . I can also send you a sample of the glass we ran the last time. My email is . Looking forward to hearing from you.

Bruce Ogilvy

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#4

Re: Looking For a Mechanical Process

01/18/2012 3:53 PM

If you search for "Recycled Crushed Glass" (RCG) you will find many references to the types of processes that you are interested in. Usually the purpose is to achieve a reasonably large "cullet" (around 15g pieces) that can be returned to glass manufacturers for optical sorting and recycling.

The smaller portions are then offered to other industries for use as filler in concrete mixes, road base, pipe embedment and even as filler in road surfacing materials.

The glass recyclers here prefer the larger size since they can remove pyrex and ceramic materials that would contaminate the furnace volumes.

Caution though, if you are getting those smaller sizes there is DANGER in the dusts created. Refer to "Silicosis" and other dust disseases that can result. Aus has had to regulate even which sand is used for sandblasting due to issues from "sharp microscopic dust" and what this can do.

Good luck in the venture.

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#5

Re: Looking For a Mechanical Process

01/18/2012 11:16 PM

Hello.

Check with this company:

http://www.aaronequipment.com/usedequipment/mills

They deal in used equipment of all types and they've probably had someone that's managed to do what you're trying to achieve.

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#6

Re: Looking For a Mechanical Process

01/19/2012 8:43 AM

I've worked on ball mills in cement plants grinding clinker lumps into the cement powder we see in bags. Big blowers through the ball mill take out the powder and i's caught in filter bags & knocked down into storage. The same plant had coal crushing ball mills which produced the fuel for the cement process, burnt in something like a big oil burner. The balls wear and finally disappear but new large balls are added now and again, may be a problem having iron dust in your glass.

We commissioned some giants in Iran which crushed the copper ore to a fine powder before separation by flotation.

I've seen carbon black in ball mills on a batch by batch process producing black pigment for paint & ink, must be pretty small particles.

I know they do metal spray with something similar to your proposal, never used it or worked on it so can't help.

So I think all the technology is there and there are dozens of second hand dealers around the world with all sizes of ball mills, I'm in the UK and I've been to a firm called Walkers many years ago, about the size of a 20 acre farm, with rows & rows of used heavy plant.

Finely powdered glass is a serious health hazard, so I'd check a few Health and Safety rules before you proceed to spray it around the place. The more usual way to coat with glass is by dipping in a liqid glaze and firing in a kiln.

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Users who posted comments:

ECOWOLF (1); engineertony (1); Hubert Lefebvre (1); Just an Engineer (1); ozzb (1); PMoon (1); SaberPack (1)

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