Pre-sort MRFs

Pre-sort MRFs prepare materials for a secondary process. O.Kay pre-sort MRFs are heavy duty systems built bespoke for each task, that can range from the separation of coloured bags from black bags to the recovery of recyclables from MSW heading for an incinerator

Pre-sort MRFs are used to prepare materials for any one of a number of downstream processes. They are heavy-duty plants that we strive to deliver with very low operating staff requirements because of the often-hazardous nature of the materials being processed. All O.Kay pre-sort MRFs provide sanitised environments for any/all sorting staff.

Typical loads

Recovering recyclables from MSW before the MSW is landfilled or incinerated

Separating sacks of recyclables from black bags collected together in a twin-bin scheme

As the front-end recovery system within an MBT or Autoclaving plant - the pre-sort MRF recovers the recyclables prior to the remaining waste entering aerobic or anaerobic digestion (MBT) or a sterilising steam cleaner unit (Autoclaving)

Preparing the calorific value of the material feed to an incinerator

The advantages of O.Kay pre-sort MRFs

• Our pre-sort MRFs are made up of heavy-duty machines built to withstand the harsh environment of handling MSW
• Automated recovery of materials lowers labour costs
• Automated recovery of materials lowers the Health and Safety risk to operators
• Materials recovered to the exact requirements of the operator
• Materials recovered can be cleaned up to meet UK mill specifications
• Cabins within MRF offer staff a clean, office-like environment
• The local authority boosts its recovery rates by treating the MSW fraction of the waste
• All our MRFs are fully guarded and covered to protect operators around the MRF
• Automated recovery of plastics, news, mixed papers and card using optical autosorting technology.
• We include points of access for the direct baling of monofraction materials such as card.

Best quality recovered product

O.Kay is an expert supplier of design-and-build systems capable of processing all tonnages of commingled with glass recyclables. Depending on the throughput, we use a mix of mechanical screens, autosorts, air knives, magnets, eddy current separators and picking stations to recover top quality materials for sale to UK mills and reprocessors. For more information on all machines found within a MRF, please use the navigation bar on the left.

Worker safety

Whether we are installing a single sorting line or a high-tonnage automated MRF, we take the safety of our workers – and the safety your staff – very seriously. Our engineers are trained to the latest UK H&S standards and they infuse these standards into all our designs. They also arrange the in-depth training of all your operating staff so they too will work safely to the highest standards.

Typical equipment within a Pre-sort MRF
Air Knives – to suck/blow out the lights fraction from any stream
Bag Openers – to open bags/sacks and release recyclables
Balers – to reduce the recovered product in size for reduced transport costs
Ballistic Separators – to separate flat-and-light items from rolling-and-heavy items
Bottle Perforators (Plastics) – to pierce and flatten plastic bottles for increased storage and reduced transport costs
Bottle Perforators (Glass) – to smash glass bottles for improved downstream sorting
Cabins – to protect sorters (shelter, heating, ventilation and air conditioning)
Can Crushers – to reduce the size/volume of recovered cans in storage bunker/transport
Conveyors – to transfer material to the screens, separators and bunkers
De-stoners – to separate heavy materials from light materials Disc (Card) Screens – to remove the fines fraction, to sort papers and card
Eddy Current Separators – to remove the non-ferrous content
Electro and Overband Magnets – to remove the ferrous content
Metering Systems – to allow front-end storage and a ‘perfect-flow’ feed into MRF
Paper Autosorts – to automatically separate all packaging, grey board and brown board from the News fraction using NIR (near infrared) detectors and CYNK (cyan, yellow, magenta and black) detectors and cameras
Plastic Autosorts – to automatically remove all plastics by polymer type and/or by colour
Pre-sorts – a type of picking belt used ahead of the primary screen to remove large contaminants
Picking Belts – to allow human sorters to sort materials or inspect recovered materials
SCADA Control Systems - to monitor and control large plants remotely
Trommels – to separate all types of materials by size (two, three or four-way splits available within single drum)
Walking Floors – to allow fast dumping of materials from trucks onto walking floor, which feeds materials into system. Also used in bunkers to walk materials onto baler feed conveyor

Options

• MRFs for all throughput materials
• Automated recovery of paper, glass, FE, NFE, card, all plastics
• All types of mechanical screens
• Bag Openers (with bypass) for bagged and loose materials
• Cabins with Heating, Ventilation, Air Conditioning and Dust Control
• Dust Control systems across the MRF
• SCADA control systems
• Principal Contractor packages
• Preventive maintenance and total after sales customer care packages - please see servicing

Currently in use by these customers

Cleanaway at their 60tph bag sorting presort MRF at Rainham,
AVG at their 100tph presort MRF at their incinerator in Cologne and
Shanks at their 40tph bag sorting presort plant in Elsow

Other related pages

MRFs Home
MRFs General Info
Autoclaves
MBT
SCADA Control Systems
Principal Contractor
MRFs - Products Side Navigation Bar (above left)