Shredder, crusher, grinder, shredding plant – SatrindTech Srl

Shredders, crushers and shredding plant for waste recycling


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From a 1 m3 cubitainer to 50mm chips, using a two-shaft shredder? With SatrindTech, “sí, es posible!”

A Spanish manufacturer of HPDE cubitainers and containers based in Cataluña has chosen SatrindTech to implement its recycling line of defective cubitainers.

The request received by our Sales Department was to replace an existing SatrindTech twin-shaft shredder, in use since the mid-1990s, to now be able to ensure a regular size of the shredded material.

The cubitainers are HDPE containers of approximately 1 cubic meter of volume that, inserted in a metal cage, are used in a wide variety of industrial sectors (oil+gas, food, medical and chemical sector, just to name a few) stocking and handling liquids or juicy materials.

The model purchased by the customer is a two-shaft shredder of the K 25 HP series equipped with 50mm blades at four picks (/hooks), a 1000 mm shredding chamber and completed with our patented CL system.

This counterblade system, patented by SatrindTech, enables conversion of a dual-shaft shredder model, with which it is normally only possible to perform volumetric, and therefore irregular,  reduction of the processed material in a machine capable of shredding materials with a pre-defined size.

A fixed counterblade located under the blades, together with grilles under the shredding chamber of the machine, allow a continuous process of material shredding so that it can be expelled from below upon reaching the required size.

Cubitainers are a type of material for which it is advisable to use a special hopper, called angular, so that material, with its typical cubic shape, can slide inside the machine at an angle of 45° from the centre distance of the blades, thus facilitating gripping by the blades.

The configuration selected by our customer will allow them to process one cubitainer per minute, obtaining a final size of the product being processed of approximately 50 x 50 mm.

Further information on the CL system is available by downloading the relevant technical data sheet here. Use this link to watch the example video.

For any other request for free quotes of our industrial shredding solutions, please contact our Sales Department by writing to sales@satrindtech.com or by calling the number +39 (02) 9037 6683.

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Our shredding solutions speak American

Our client is an American multinational corporation in the plastic sector with offices and production plants in 23 countries and over 35,000 employees.

The client’s need to improve its performance in recycling material waste, whereby they currently only use one material granulator, led SatrindTech to suggest using two twin lines to handle plastic material in PPE. One line will be used to reduce the volume of sprues, while the other will be used to process waste from the plant’s extrusion line.

The engineering of the line consists of three elements: an automatic hoist tilter, a dual shaft shredder (model: K 8/25) and a transport belt placed after the shredder to transport the shredded material to the mill.

The process provides a total automation of the process for the cargo and discharge of material, whereby cargo is carried out by placing the material cargo into the hoist tilter which will lift and carry the material into the hopper. Once the material has been shredded in the shredding room, it will be transferred to the mill using the transport belt. The whole process cycle is managed by a PLC Siemens control panel.

While this solution is in itself a solution that has already been tried and tested during SatrindTech’s history, its uniqueness lies in the fact that the main electrical panel that governs the plant was designed and uses components in accordance with UL 508 / NPFA 79. Therefore, the electrical panel had to be completely redesigned, in keeping with IEC standards, for the use of components that respected the UL standards, as the on-board wiring had to reflect the similar requirements. All of the electrical cables had to be reviewed and replaced in keeping with European standard supplies.

In essence, this legislation regulates the provision of equipment and instructs the technical characteristics which the machine(s) must possess for the United States. Where the certification, in accordance with these regulations, is a contractual requirement, the SatrindTech and its Engineering are able to satisfy any such problematic requests.

E-mail us at sales@satrindtech.com or ring us up on +39 02 9037 6683: we will be more than willing to respond to your enquiries and assist you with our shredding solutions.

Cardboard shredding - SatrindTech Srl


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SatrindTech Shredder installed in a line of cardboard recovery in Belgium

2014 statistics processed by CEPI (Confederation of European Paper Industries), indicate that in Europe almost 7 million tonnes of cardboard are consumed (www.cepicartonboard.com/?section=some_market_statistics). This material, used mostly in the packaging sector, can be reused many times (usually up to 6) and 54% of it is comprised of recycled material (www.cepicartonboard.com/?section=cartonboard_production).

During this past August a two-shaft shredder was delivered in Belgium. It is a hydraulic model K 13/50, equipped with special hopper and hydraulic presser, which will be used as a primary element of a shredding and compacting line of cardboard packaging, designed to process 1,5 t/h.

The K 50 HP series hydraulic shredders, used for the volumetric reduction of materials, allow the processing of up to 3 t/h of waste and industrial products such as cardboard packaging, plastic and metal drums, cubitainers, plastic, electronic waste, pallets and food scraps, as well as SUW, ELT and RDF.

With a shredding chamber measuring 1,250 mm in length and a set of 50 mm blades with 1 beak, the K 13/50 shredder is then completed with additional special items, designed by the SatrindTech Technical Office upon the customer’s request: a hopper able to accommodate up to 5 m3 of material and an arched hydraulic presser, whose function is to facilitate the gripping action of the blades on the material during processing.

The hopper is equipped with an opening on the rear side with a swinging door to allow the entry of the presser in the hopper when required by the operator.

The project, within which the SatrindTech shredder is the first element of the line, provides that the material is loaded into the hopper using a forklift.

Once processed, the shredded material falls onto a conveyor which distributes it to the compaction lines positioned in a parallel way along the processing line.

The shredder, the presser, the loading and unloading transport belts, are handled by a single electrical panel, on which there is also a digital powerbank hydraulic control panel.

Having to treat potentially inflammable material, in addition to the requirements of the EC norms, the shredder was supplied with a cable system in accordance with requirements of Belgian legislation in this area, which is in accordance with standard NBN C30-004 F2.

Our SatrindTech sales service is also available to provide any type of technical information and to propose solutions for the shredding of materials.

For any of your requests, please contact us at +39 02 9037 6683 or write to us by sending an email to sales@satrindtech.com.

Shredding of end-of-life tyres (ELTs)


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Shredding of end-of-life tyres (ELTs): a “black gold mine” ready for being exploited

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 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

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.com or 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.


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Pilot line for CDR production, new 3-shaft shredder inside a the plant for sterilization and set up of a new RDF production line

New bale opener K13/50T delivered to Hungary

Our customer, an Hungarian cement factory, received the SatrindTech bale opener model K13/50T, able to process approximately 5 t/h. and integrated it inside a pilot line for CDR production.

The scope of the supply is the opening of arrival bales to permit the eventual metal selection.

New 3R13 shredder / 75ER inside a the plant for sterilization

It was installed and put into operation the new 3R13 shredder / 75ER inside a the plant for sterilization.
Set up thanks to a collaboration with a customer of SatrindTech, the system, designed for the shredding and sterilization of medical waste, has a throughput of 1000 kg/h.
Click here to watch the video

Set up of a new RDF production line

SatrindTech has just set up a new RDF treatment line at a customer ‘s plant located in the Piemonte region (north west of Italy).

The customer decided to improve the two existing waste treatment lines, active since 2004 and each one composed by a SatrindTech 2R15/150 shredder, a rotating screen used for selecting organic waste and an horizontal press, by adding a new SatrindTech 2R15/150 shredder to the system.

Thanks to this new equipment, a part of the material coming out from the rotating screens will be now treated by the new SatrindTech 2R15/150CL shredder in order to get RDF. The machine, equipped with screens, allows a throughput of 4 tons/h and obtains a final particle size of aprox 80 mm.

The choice of a two-shafts shredder instead of a traditional single-shaft shredder (available in the SatrindTech) has been taken in order to keep the maintenance costs as low as possible, also considering the low t/h loading rates required.

Click here for the video.