used in kids play grounds for shock absorbing floors

http://www.google.co.uk/search?q=recycling+old+car+tyres&sourceid=ie7&rls=com.microsoft:en-US&ie=utf8&oe=utf8&rlz=1I7GPCK_enGB411&redir_esc=&ei=U_sWTdCkH4O0hAe4sJG4Dg

Have a look at http://www.google.co.uk/url?q=http://www.ni-environment.gov.uk/pubs/publications/UsedTyresLeaflet.pdf&sa=U&ei=VTEXTbSjA4-zhAeKhJC3Dg&ved=0CBEQFjAA&usg=AFQjCNFrZen_VSnIr-Y5wHJVG43taKFlRw

I am an advanced diploma electrical engineer and I worked on some tyre recycling machines about 2 years ago ,the company went belly up because their biggest problem was an extreme lack of organisation in relation to R&D and the location of the plant caused problems with the neighbours but otherwise could have been a viable business if it had been run properly ,overall it is a fairly simple process to strip the top layer ,remove the beads, shred and seperate the grades of rubber and steel.

Dear Sir

I would like to ask you: Is this project profitable ? it was profitable at that time but what about it now?

If compared the plant cost and labor cost blus raw material cost.verses sale price will be profitable and how long will take to rcover the capital invested in this project? This assambsion in good hope.

I aprociat your cooperation.

Best regards.

I was not directly involved at the financial level ,I was a contractor brought in to sought out the electrical problems they were having, but was told that the fine grade was used for mascara and that they seemed to have a ready market for the other grades including playground surface once the granule had been run through a painting process ,the company actually charged people the take the tyres.

This particular plants problems stemmed from extreme mismanagement.

If they had been able to run the plant reliably there was enough demand to run the plant 27/7

We have a few plants in the USA that use old tires as fuel in power plants.

http://www.enquirer.com/editions/2002/11/17/biz_tireshredder17.html

Finally! Something we can burn that pollutes more than coal! What progress those yanks are making in environmental concerns!

Eat yer heart out, Jeremy Clarkson!

I have seen one of the tire recycling plant , if you need any information , please let me know , my email is iamajit@gmail.com

The biggest change in the last two years is that the market for rubber crumb has expanded. It is now used much more extensively in the bitumen processing industry as a filler for road laying asphalt and waterproof roofing products. The addition of rubber and some other polymers modify the bitumen properties to make it more flexible and extend its working life. Adding recycled rubber is also seen as a "green" option.

I have not built a plant to recycle tyres for over thirty years, when virtually the only market was carpet tiles and carpet underlay. The tyres were ground up using modified rock crushers and the separation magnets were weak and crude compared to today. Because all the recycled rubber was going to an adjacent underlay manufacturing facility, we did not even attempt to grade the particle sizes.

The main problem that I recall was the rubber crumb settling if it was left in a silo for too long.(more than a week) It would form a solid mass almost impossible to discharge into the blowing conveyors. The plant owner instituted a regime of FIFO usage and if the product had stood for more than five days he discharged from the base of one storage silo into the top of another to re-inject some air and retain the product fluidity.

The process is simple and very effective You deep freeze tires using liquid Nitrogen (rubber become brittle) then direct tires into rock crusher, using electromagnet pull steel out of the crushed tire and bundles of fibers with steel stuck on one pile and vacuum out the rubber pieces into containers. Then you can enjoy pretty good profit making new tires. I'm afraid the process is still protected with a patent, but the patent might expired already.

Won't fly in most north american jurisdictions. Use of used tire products is prohibited in the manufacture of consumer goods. New tires, ie factory rejects, are ok. Some tire manufacturing plants will sell their defective products to recyclers. They are often used for playground equipment, but only bias-ply varieties. Steel belted radials cannot be.

We are doing some I&C work for these guys and it is working fine on batch process at present, shortly to run on a continuous process. On a batch process, it is currently storing the liquid and gas products. It is a solution.

http://www.nzherald.co.nz/recycling/news/article.cfm?c_id=614&objectid=10622664

Burning rubber pays for entrepreneurs

By Tamsyn Parker 4:00 AM Thursday Jan 28, 2010

Tyregone Processors inventors Hamish Hamilton (left) Roger Monkton and Chris Newman. Photo / Supplied

The need to solve a problem for one invention has helped three entrepreneurs come up with an environmentally friendly way to recycle tyres - and now they are close to taking it commercial.

Inventor Chris Newman was working on a synthetic fuel project in 2004 when he decided he needed an easy source of carbon - a key ingredient in the process.

Thinking about places to find carbon he came up with tyres and began looking at ways to extract it.

But when he talked to fellow inventors in the United States they suggested recycling tyres would be an even better business to pursue.

"I started with a little unit that made half a kilo [of carbon]."

Newman teamed up with engineer and fellow Aucklander Roger Monkton, who got in touch with Newman after he saw an article in the New Zealand Herald on the fuel.

The pair increased the size of the model so it could make 8kg of carbon and then 32kg.

"It was at that stage I decided I needed a chemical engineer."

That was when Hamish Hamilton came on board.

Newman says the trio have worked hard together to come up with a commercially viable tyre recycling business. They own 40 per cent of Tyregone Processors while their private backer owns 60 per cent.

Newman says millions of dollars have been pumped into the business to help set up its processing plant in West Auckland's Glendene.

The process is contained within a 12m container and involves breaking down shredded tyres by heating them to 650C in a process called pyrolysis.

The gases produced by heating are cooled and the liquids distilled to make carbon, steel, oil and gas.

The gas is used to fuel the machine which means it is self-sustaining and it does not release any black smoke, acrid odour or toxic emissions.

The oil can be used as fuel for boat engines and the steel can be reused while the carbon can be used in making rubber mats and hoses.

Newman says it's the perfect solution to the five million tyres which are dumped annually in New Zealand and often end up being exported to China to be burned.

The trio are in talks to set up two other processing plants which they say could handle all of New Zealand's second-hand tyres.

Newman believes they are just months off making it commercially viable.

The company has patented the technology and there are plans to expand the business to Australia, the United States and Korea and Japan.

TYRE MOUNTAIN * 5 million tyres are disposed of annually in New Zealand. * More than 1 billion tyres are manufactured globally each year. * Many end up in the dump or being sent overseas to be burned. * Some are recycled for use under playground equipment.

Hi Bob

I also had a look at the project that you are talking about, it seems to me a fantastic way to recycle the tyres, and the concept is so simple.

What part of Auckland are you in? we should catch up some time,if you would like to. send me your contact details. All the best for the New Year.