Docstoc

Old Tyres – Shredded and Tracked_

Document Sample
Old Tyres – Shredded and Tracked_ Powered By Docstoc
					Old Tyres –
Shredded and Tracked!
It is estimated that NZ’ers dispose of
some 4 million tyres each year. About
half of these are simply dumped into
landfill. What is the potential for re-
use?

We take a short look at New Zealand’s
largest tyre recycler, to see what’s
happening in the industry these days.         Jim and Janene have also had a lot of
                                              media exposure, with visits from the
                                              Ministry for the Environment, Councils,
J & J Laughton Shredding                      and overseas companies.
Services Ltd.
                                              Tyre Track
Jim and Janene Laughton established           In recent years, Jim has become
their business in 1996, becoming NZ’s         involved with MFE/MTA/Tyre Track, as
first tyre collectors and recycling           well as with a working group with other
operation.                                    tyre recycling operators from other parts
                                              of NZ. This group (although relatively
Over the past nine years, Laughtons has       new) is very strong, and is asking for
serviced the Rodney, Auckland and             support from government on
Waikato areas, collecting tyres from a        rules/regulations nationwide regarding
large pool of customers, making J & J         markets and incentives to recycle.
Laughton the largest waste tyre
collector/recycler in NZ. The operation       A more recent innovation is the set-up of
is based at Glendene, Auckland where          an industry group, which has been
they hold a current waste collection and      formed to promote the re-use and
waste management facility licence.            recycling of old tyres. Jim and Janene
                                              Laughton are founding members, and
Their Glendene property covers an area        believe that this organisation will help
of 3647 square metres. This includes a        with promoting alternative uses of tyres,
workshop, office, lunchroom, dangerous        so that in the future, none will have to go
goods shed, a car park, and storage areas     to landfill.
for bags and rims.

The company has the reputation of being
reliable, efficient, professional and fair.   Tyre source and collection
Over the years, they have received            Laughtons’ customers are tyre retail
several awards from Councils and waste        outlets, garages, car wrecker yards, re-
awareness groups for their initiatives in     treading plants, resource recovery
recycling.                                    centres and members of the public. They
                                              have ongoing collection contracts with
several Councils ranging from tyre             Disposal Options
dumping to inorganic kerbside                  Markets for recycled scrap tyre rubber
collections.                                   were virtually non-existent when the
                                               Laughtons first entered this business, so
Over the nine year period that Laughtons       they had to primarily focus on civil
have been operating, they have worked          engineering and recreational
hard to make tyre recycling sustainable.       applications, and create their own
                                               markets. Some of these include:
They have educated the public and tyre
outlets of the need for a user pays system        •   Land erosion control;
and provided customers with a laminated           •   Sub base in roads (private
poster endorsed by several Councils to                properties and farms etc);
help make user-pays an accepted                   •   Surface water diversion;
practice in New Zealand.                          •   Embankment retention;
                                                  •   Sports turf-management;
For a fee depending on the size of the
                                                  •   Horse arena surfaces;
tyres i.e. car, truck, tractor, the new tyre
customer at a tyre outlet pays for the            •   Backstop firing ranges.
disposal of their old tyres. The retailer
then calls on Laughtons to collect them.
Laughtons operate a small fleet of             “Generally speaking, there are
vehicles for collection of these tyres.        three grades of processing and
                                               shredding.” Jim Laughton.
Tyre generators from outside Auckland
often come to the premises to drop off         Primary Shred
tyres. The tyres are sorted into groups by     Primary shred is fairly coarse at
the yardmen, e.g. car, 4WD, light truck        50-300mm and the product is used for
or tractor, and are then further sorted        drainage, for bank retention, backfill of
from steel-free tyres to steel belted to       retaining walls and even as landfill
other tyres needing de-rimming.                cover.

Depending on the market demand on the
day, tyres are shredded, chipped,
granulated or left whole for re-use,
silage or matting etc.

All sizes of tyres that enter Laughtons
are processed at the premises. The
machinery handles tyres easily, and they
have back-up machinery in case of
mechanical failure, preventing any
stockpiles building up.
                                               Secondary Shred
                                               With secondary processing a smaller
                                               chip is formed, from 50mm down to
                                               16mm. This is steel free.
Markets for the products                      used in the manufacture of sports-ground
One of the success stories of JJLSS is        surfaces, such as sports-turf for hockey
the market creation of their sports horse     grounds and tennis courts, and along
arena surfacing rubber.                       with other materials such as sand, can be
The product is in demand all over NZ          used at golf courses to improve drainage.
and several professional Olympic
equestrian riders are now enjoying this
excellent surface and recommending the        Potential uses and markets
product to others.                            There is the potential for secondary and
                                              tertiary shred to be sent to Asia, and
Using rubber as a back-stop for firing        markets are being found for rubber
ranges is also popular, due to the lead       crumb, but markets are fickle, prices
being recoverable from the embankment,        fluctuate wildly, and long term contracts
whereas with the old practice, the lead       are hard to find.
would stay in the clay bank, leading to
contamination of the ground.                  Here in New Zealand, Opus Consulting
                                              is currently doing a trial using rubber in
Many playgrounds now have the rubber          roading, and this is into its second year.
being used as a rubber chunk layer, laid
down before fabric and a fine rubber          Because of increasing fuel prices,
layer is placed on top.                       various uses of tyre-derived fuel are
                                              being considered. Tyre shred is being
                                              considered for use as a fuel in cement
Tertiary Processing                           kilns, and one of the largest wood
Under this process the chip rubber is         manufacturers is also looking at this as a
ground into small particles, but note that    potential fuel.
this is not currently done here in New
Zealand. An example of this would be          The opportunity for alternative fuels is
where rubber chip is reduced to sugar-        also increasing. Studies are underway in
sized granules. There is a growing            NZ for the consideration of waste
market for this in ‘modified asphalt”.        rubber, with its high calorific content, as
This provides for a potentially long-         a fuel source for conversion into bio-
lasting and quiet roading surface and         diesel through pyrolysis. It is already
there is increasing use of this product in    being used this way in Japan.
the UK.
Further grinding of the chip results in a
fine, powdery rubber crumb, which is          Future Developments
used in the manufacture of rubber             A percentage of tyre rubber still goes to
bollards and rubber road dividers. This       landfill. The potential to reduce that
uses large quantities of vulcanised           figure is on the increase with a number
crumb and has a potential for use in NZ.      of companies showing keen interest in
Crumb can also be used as a base              rubber as a feed stock.
material for shoe soles, solid rubber         With the increasing need to process our
tyres for machinery such as fork lifts, for   wastes and use them as a resource, rather
rubber floors, and can be made into           than simply dumping them, the future
waterproof membranes. It can also be          for tyre recycling is looking pretty solid.

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:11
posted:8/18/2011
language:English
pages:3