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COREENERJI
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Join Date: Dec 2013
Posts: 1

Rubber Blocks Cutting

12/23/2013 4:15 AM

Is there any advice for cutting methods/machinery for uncured stuck huge scrap rubber blocks?

Uncured rubber containes steel or cord fabric..

waiting for valuable advices

regarsd
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kramarat
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#1

Re: rubber blocks cutting

12/23/2013 6:03 AM

Just off the top of my head, I would think that a large band saw would work...maybe with some soapy water as a lubricant, to keep things from binding up.

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dvmdsc
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#2

Re: rubber blocks cutting

12/23/2013 7:38 AM

I 'd go for a high RPM cutting grinding blade with rough grit or a band cutter based on a no teeth grinding band. Eventually diamond finish. The steel cord might be an obstacle for a saw. To cut steel wire, the teeth should be very fine, what is controversial to the rubber part. When dry this process will produce ugly stinking smoke. Rubber is cut easily under water or with lots of soapy water as suggested before.

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phoenix911
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#3

Re: rubber blocks cutting

12/23/2013 8:11 AM

do not know what the size your talking about or what your resources you have available, as well as production.

Using a high pressure water jet comes to mind.

http://www.flowwaterjet.com/

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lyn
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#4

Re: Rubber Blocks Cutting

12/23/2013 8:39 AM

Define "uncured stuck huge scrap rubber".

Are you talking about tires?

Valuable advice comes with valuable information supplied by the OP. (That's you)
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tcmtech
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#5

Re: Rubber Blocks Cutting

12/23/2013 5:45 PM

Heck just send them to me. My boiler doesn't care what condition the rubber is in or about what's in it.

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pberry
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Join Date: Sep 2015
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#11
In reply to #5

Re: Rubber Blocks Cutting

09/18/2015 4:25 PM

What size or materials can you use in your boiler?

We have all kinds of uncured rubber in different sizes and shapes with cord or with metal or neither. Uncured tires passenger and truck etc. etc.

We recycle a lot from tire manufacturing plants

Please advise as I have been looking for a place like yours

Thank you so much

Peggy Berry
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phoenix911
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#6

Re: Rubber Blocks Cutting

12/23/2013 6:02 PM

There are grinders that they use to grind up old tires ......

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Theophilus Stark
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#7

Re: Rubber Blocks Cutting

12/23/2013 10:51 PM

Just a thought (this isn't a problem one runs across every day :), but can you use a portable, high-pressure water cutting-tool to separate the softer rubber away from the embedded steel and then cut-up the steel by more conventional means as a separate step?

You said the blocks were 'huge.' How huge?

-T.S.
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Gert Mengerink
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#8

Re: Rubber Blocks Cutting

12/24/2013 5:47 AM

A fine teethed bandsaw will do the cutting job if you freeze the blocks first in liquid N2.

Scrap metal grinding mill most likely too can deal with frozen blocks.
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roy hammy
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#9

Re: Rubber Blocks Cutting

12/24/2013 8:50 AM

Trying to read your mind but I interpret it as old tires you are working with. The best and cleanest way is freezing with liquid nitrogen, crush and separate the steel with magnets. Floatation may separate the rubber from the fluff ( cords) All three can be recycled and the rubber has plenty of hydrocarbons, about 1/2 gallon of diesel in one 775-14 tire.

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krishnan.ng
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#10

Re: Rubber Blocks Cutting

12/24/2013 11:40 AM

I found the following information from Google search: (http://www.ecomena.org/tag/cryogenic-grinding/)

"Cryogenic grinding refers to the grinding of scrap tires at temperatures near minus 80oC using liquid nitrogen or commercial refrigerants. Cryogenic processing generally uses pre-treated car or truck tires as feedstock, most often in the form of chips or ambiently produced granulate.

Processing takes place at very low temperature using liquid nitrogen or commercial refrigerants to embrittle the rubber. It can be a four-phase system which includes initial size reduction, cooling, separation, and milling. The material enters a freezing chamber where liquid nitrogen is used to cool it from -80 to -120 °C, below the point where rubber ceases to behave as a flexible material and can be easily crushed and broken.

Because of its brittle state, fibres and metal are easily separated out in a hammer mill. The granulate then passes through a series of magnetic screens and sifting stations to remove the last vestiges of impurities. This process requires less energy than others and produces rubber crumb of much finer quality. "
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Users who posted comments:

dvmdsc (1); Gert Mengerink (1); kramarat (1); krishnan.ng (1); lyn (1); pberry (1); phoenix911 (2); roy hammy (1); tcmtech (1); Theophilus Stark (1)

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