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Shredding solutions for a cleaner world


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The hot summer by SatrindTech: three new shredding solutions for RDF production plants delivered all over the world

The 2017 summer season at SatrindTech has been really, really hot.

During the summer months, we completed production and delivered three machines addressed to three major projects in the waste business: two units of two-shaft shredders and one unit of three-shaft shredder. The machines are now operating in three different RDF-production plants.

The first of the two-shaft shredder, delivered to a treatment plant in Colombia, has been a 50hp shredder, model K 13/50M, equipped with our patented mechanical / M / AWG drive system.

This system (LINK) permits the customer to benefit of a fully electric machine (savings in maintenance operations costs and energy costs) with modes and behaviors comparable to a hydraulic system. The shredder was in fact commissioned to SatrindTech for the volumetric reduction of auto tyres and debeaded truck tyres .

The second two-shaft shredder, produced and delivered during mid-summer, is a model 2R 15/150 (at 150hp), that has been ordered by our customer for a bulky waste treatment plant in Poland.

The third machine delivered has been a three-shaft shredder at 200hp, model 3R 15/200, which is now working 24// in a Chinese treatment plant processing fabric, textile and hazardous materials, suitable for RDF-production.

For any additional information you may all have about the technical solutions we can offer you, please contact our Sales Office at 02 90376683 or email at sales@satrindtech.com.

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Shredding of end-of-life tyres (ELTs)

“Problems can’t be solved by using the same kind of thinking we used when we created them” (Albert Einstein).
The 2014 report by the ETRMA (European Tyre and Rubber Manufactures’ Association Sustainable Development Foundation) shows that only considering consumer, light truck, truck, motorcycle and agriculture tyres, in 2012 Germany, UK, France, Italy and Spain had been able to generate 3,42 Mt of End-of-Life tyres.
If in 1996 these countries were used to landfill almost the 50% of the material, while only 20% was used for RDF production and 10% as material recover, 15 years later the first figure has dropped to 5%, the second and the third increased up to 37% and 39%.
An American report says that, on a worldwide base, the figure to be considered including OTR and mining tyres is 1 Bt per year.

What to do with such material? Can we call them a black gold mine?
In addition the undoubted benefits to the environment (recovering of space in landfills, no soil pollution, energy cost savings), treating the ELTs means to use them for producing different recycled tyre materials (RTMs), such as:

  • Refure Derived Fuel (RDF) and Specific Recovered Fuel (SRF) to be used  in cement plants, steelmakers and energy plants;
  • rubbercrate (alternative concrete mixed with rubber) and rubberized asphalt;
  • anti-shock flooring for child parks;
  • outdoor and indoor sports and leasure flooring production;
  • animal farms anti-shock flooring;
  • urban decoration (parking areas, road and parking furniture, benches, paths, barriers, etc).

Each one of these applications requires a proper size of the throughput: from 100x100mm chips for RDF to <1mm metal and fiberfree rubber crumb for urban decoration and antishock floorings.
Different sizes also mean different plant set-ups: from a simple set of conveyor(s) and hydraulic 2 shaft and 3 shaft shredder(s) if we only want to get a size of 100x100mm/50x50mm or 20x20mm to a more complex set-up (involving more than three shredding steps) in order to get <1mm rubber crumbs.

SatrindTech has a quite large and proved history as a shredders manufacturer of 2 and 3 shafts hydraulic shredders and treatment lines for car- and truck- ELTs, either stationary and/or on a mobile unit. This video shows an example.
The demand for shredding OTR tyres has recently increased worldwide, especially from those countries where the mining business has a crucial role in their economies (South Africa, Chile, Peru, Colombia just for making some examples).

SatrindTech is able to offer comprehensive shredding solutions that could now include also OTR tyres.
Just to make an example, a typical plant for obtaining 50x50mm chips with a throughput of 7 t/h is composed by feeding and discharging conveyor belts, a high torque hydraulic shredder and a disc screen for the selection of the material with the suitable size. In order to process OTR tyres in the same plant (previously used only for car and truck tyres), SatrindTech can now offer a debeader and a shear, which will be used before the first step of the shredding process. These machines are necessary for removing the beads from the truck and from the OTR tyres and for the size reduction of the last ones so they can be processed with our existing line.
Removing the beads from the tyres means to cut the maintenance costs on the equipment that follow in the line on the long term.

For any additional information about our customized solutions for ELTs treatment, please feel free to email us at sales@satrindtech.comor to call our Sales staff at +39 02 9037 6683.

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The shredding of hospital and medical waste

Waste produced in hospitals is a type of waste considered special or dangerous, as the material is composed of different elements:  biological and anatomical components, single use items deriving from surgical treatment, material used by healthcare personnel such as shirts, caps and masks, bandages, medicines used by patients, single-use glass and plastic containers used for extracting and storing human elements and slightly radioactive waste.

SatrindTech, with thirty years’ experience in proposing applicative solutions for industrial shredding and waste recycling processes can offer various solutions associated with the shredding of hospital waste. One of the most suitable shredders for this purpose is the 15 hp model (available in the F 515, F615, F1015 and F1315 versions).

Last January, we supplied one of our Italian customers with a system for shredding and separating solid and liquid waste from hospitals and pharmacies (such as rigid and semi-rigid containers, bags containing liquids) or excess production from the cosmetics industry (for which there is a need to avoid the circulation of such products in parallel, uncontrolled markets).
The solution that the customer accepted was made up of the following elements:

  • a material loading belt for the shredder with a rubber mat equipped with dividers to stop cylindrical items rolling away;
  • an F 615/2P model shredder with a set of 30 mm blades with 4 jaws, equipped with additional bulkheads to protect the drive train bearings from any liquid infiltrating from the shredding chamber;
  • a stainless steel Archimedean screw fitted to the base of the shredding chamber underneath;
  • a stainless steel collection tank underneath the screw.

Once shredded, the material is fed onto the screw, which separates liquids from solids. The liquid element is discharged into the relevant container, whereas the solid parts are carried by the screw into another vessel.
As containers containing creamy liquids can also be treated, the screw has a cleaning system which can dilute any creamy contents, assisting with the discharge into the container, avoiding accumulation in the screw, which would otherwise become blocked.

The system can treat 500 kg per hour. The shredded waste in this case is destined for disposal, as it is mostly plastic, however it is “polluted” by the presence of paper, as the material had labels on it from the start. This video demonstrates the operation.

For more information regarding this solution, or for any other requirements, you can contact our sales team using the address sales@satrintech.com or by telephone +39 02 9037 6683.