Commercial, industrial & packaging residues
Paper, plastic packaging, textile offcuts and wood packaging may arrive loose or baled. The mixture can include flexible fractions alongside bulky pieces.
RDF Preparation · Shredding & Conveying
Solid Waste Shredders for RDF Preparation
BoRay supplies single shaft and double shaft shredders with supporting conveyors for refuse-derived fuel (RDF) preparation, solid waste size reduction and sorting preparation.
Match the shredder to the feed Configure feeding, cutters and discharge for bulky, flexible, baled or mixed materials.
Connect the next process Plan conveying around your loading method, discharge height and receiving equipment.
Start with the Feed
What stage has your RDF feedstock reached?
Combustible streams for RDF preparation may come from commercial and industrial residues, packaging waste or sorted mixed waste. Loose film, baled textiles, wood offcuts and pre-shredded mixtures place different demands on feeding and cutting.
Combustible fractions from sorted mixed waste
Combustible fractions recovered from municipal or other mixed waste have already passed through sorting. Their composition and remaining contaminants depend on the treatment completed upstream.
Pre-shredded material needing further sizing
Pre-shredded feed has already undergone size reduction but may still contain oversized pieces or long flexible strips that do not meet the next process’s feeding requirements.
RDF Shredding Process
Explore the role of each stage, from bulky feed reduction to screening and optional fuel briquetting.
Twin rotors grip, tear and shear bulky wood, furniture and mixed packaging. The reduced material is discharged onto a conveyor for transfer to the next process.
Secondary shredding further reduces the size of sorted or pre-shredded material, including oversized pieces and long flexible strips, to prepare it for the next process.
The illustrated screen separates shredded material by size into two discharge paths. Conveyors carry the separated fractions away from the screen for their next treatment or destination.
Prepared material can be compacted into fuel briquettes. This optional downstream stage is separate from BoRay’s shredder and conveyor supply; its feed and output requirements must be confirmed with the briquetting supplier.
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ON-SITE FOOTAGE
RDF Material Handling: Feeding, Shredding and Conveying
Watch material feeding, shredding, conveying and briquette discharge in this one-minute compilation.
Inside the Process
A closer look at material handling and processing
Close-up views from the recordings show the feed hopper, cutting chamber and briquette discharge.
| Where the output goes | What to define |
|---|---|
| Sorting equipment | Acceptable material size and shape, and the required feed conditions. |
| Further shredding | The next machine’s feed limits, including any long strips or oversized pieces that need to be controlled. |
| Fuel preparation or use | The receiving facility’s requirements for size, shape, conveying and feeding. |
Output requirements by downstream process
- Sorting equipment
- What to define
Acceptable material size and shape, and the required feed conditions.
- Further shredding
- What to define
The next machine’s feed limits, including any long strips or oversized pieces that need to be controlled.
- Fuel preparation or use
- What to define
The receiving facility’s requirements for size, shape, conveying and feeding.
Screening separates material by size. Magnetic separation removes ferrous metals, while air separation separates lighter and heavier fractions. These perform different tasks: size screening alone does not replace contaminant removal. Their position in a line depends on the treatment already completed and the next process’s receiving requirements. BoRay’s supporting conveyors can be configured around the selected equipment interfaces.
Shredding primarily changes material size. Suitability as a fuel also depends on composition, moisture, calorific value, chlorine content and other receiving requirements; fragment appearance alone cannot confirm fuel quality.
Select by Processing Task
Heavy-duty shredding for bulky RDF feed
Primary reduction prepares bulky wood, packaging and mixed waste for conveying, sorting or further treatment.
| Incoming material | Equipment to evaluate | Selection checks |
|---|---|---|
| Bulky wood, furniture and irregular mixed waste | BRDS heavy-duty double shaft shredding for primary reduction | Largest items, hard contaminants, loading method and operating load |
| Baled packaging and bulky mixed combustible fractions | Assess primary shredding around the bale and material mix | Bale dimensions, composition, flexible fractions and the next process |
| Sorted or pre-shredded feed requiring closer output control | BRS-H heavy-duty single shaft shredding as a conditional sizing option | Current size, long flexible pieces, screen choice and receiving limits |
Match the feed to the shredding task
- Bulky wood, furniture and irregular mixed waste
- Equipment to evaluate
BRDS heavy-duty double shaft shredding for primary reduction
- Selection checks
Largest items, hard contaminants, loading method and operating load
- Baled packaging and bulky mixed combustible fractions
- Equipment to evaluate
Assess primary shredding around the bale and material mix
- Selection checks
Bale dimensions, composition, flexible fractions and the next process
- Sorted or pre-shredded feed requiring closer output control
- Equipment to evaluate
BRS-H heavy-duty single shaft shredding as a conditional sizing option
- Selection checks
Current size, long flexible pieces, screen choice and receiving limits
BRDS · Heavy-Duty Primary Shredding
Primary reduction for bulky wood and mixed waste
Twin rotors grip, tear and shear bulky feed before conveying, sorting or further treatment. Evaluate BRDS where larger items or heavier operating loads call for a heavy-duty configuration.
Select the chamber, cutters and drive around the actual material mix and largest items. Gearbox options follow the selected configuration; they are not identical across all models.
View Double Shaft Models & Specifications →Models & Typical Configurations
Typical configurations are shown for reference. Final model selection and equipment configuration depend on your material, required throughput and output requirements.
BRDS heavy-duty double shaft shredders
| Parameter | BRDS-1600 | BRDS-1800 | BRDS-2000 |
|---|---|---|---|
| Cutting chamber (mm) | 1600 x 1100 | 1800 x 1000 | 2100 x 1300 |
| Blade diameter (mm) | Dia. 550 | Dia. 550 | Dia. 650 |
| Blade thickness (mm) | 60 | 60 | 60/80 |
| Power (kW) | 90 + 90 | 75 + 75 | 200 + 200 |
| Overall size (mm) | 5630 x 3160 x 3200 | 6110 x 4950 x 5520 | 6700 x 3700 x 3600 |
| Machine weight (kg) | 16000 | 22000 | 29000 |
BRDS-1600
- Cutting chamber (mm)
- 1600 x 1100
- Blade diameter (mm)
- Dia. 550
- Blade thickness (mm)
- 60
- Power (kW)
- 90 + 90
- Overall size (mm)
- 5630 x 3160 x 3200
- Machine weight (kg)
- 16000
BRDS-1800
- Cutting chamber (mm)
- 1800 x 1000
- Blade diameter (mm)
- Dia. 550
- Blade thickness (mm)
- 60
- Power (kW)
- 75 + 75
- Overall size (mm)
- 6110 x 4950 x 5520
- Machine weight (kg)
- 22000
BRDS-2000
- Cutting chamber (mm)
- 2100 x 1300
- Blade diameter (mm)
- Dia. 650
- Blade thickness (mm)
- 60/80
- Power (kW)
- 200 + 200
- Overall size (mm)
- 6700 x 3700 x 3600
- Machine weight (kg)
- 29000
BRS-H heavy-duty single shaft shredders
| Parameter | BRSH-1500 | BRSH-2000 | BRSH-2200 | BRSH-3000 |
|---|---|---|---|---|
| Cutting chamber (mm) | 1700 x 1500 | 1700 x 2000 | 1700 x 2200 | 1970 x 3000 |
| Rotor diameter (mm) | 460 | 460 | 600 | 800 |
| Screen hole (mm) | Dia. 40 customizable | Customizable | Customizable | Customizable |
| Power (kW) | 90 + 5.5 | 75 + 75 + 7.5 | 132 + 132 + 11 | 220 + 220 + 11 |
| Overall size (mm) | 2550 x 3750 x 2750 | 2550 x 4350 x 2750 | 2750 x 5640 x 2900 | 2850 x 6950 x 3700 |
| Machine weight (kg) | 13000 | 15500 | 21000 | 30000 |
BRSH-1500
- Cutting chamber (mm)
- 1700 x 1500
- Rotor diameter (mm)
- 460
- Screen hole (mm)
- Dia. 40 customizable
- Power (kW)
- 90 + 5.5
- Overall size (mm)
- 2550 x 3750 x 2750
- Machine weight (kg)
- 13000
BRSH-2000
- Cutting chamber (mm)
- 1700 x 2000
- Rotor diameter (mm)
- 460
- Screen hole (mm)
- Customizable
- Power (kW)
- 75 + 75 + 7.5
- Overall size (mm)
- 2550 x 4350 x 2750
- Machine weight (kg)
- 15500
BRSH-2200
- Cutting chamber (mm)
- 1700 x 2200
- Rotor diameter (mm)
- 600
- Screen hole (mm)
- Customizable
- Power (kW)
- 132 + 132 + 11
- Overall size (mm)
- 2750 x 5640 x 2900
- Machine weight (kg)
- 21000
BRSH-3000
- Cutting chamber (mm)
- 1970 x 3000
- Rotor diameter (mm)
- 800
- Screen hole (mm)
- Customizable
- Power (kW)
- 220 + 220 + 11
- Overall size (mm)
- 2850 x 6950 x 3700
- Machine weight (kg)
- 30000
Fit the Equipment to the Site
Consider feeding, shredding and discharge together
Feeding and cutting
Double shaft rotors grip and shear the feed. Cutter thickness and tooth profile influence engagement, so compare them with the size and shape of your material. For a selected BRS-H sizing stage, review its chamber and swing-arm pressing system against the prepared feed.
Discharge for the next process
Double shaft cutter width does not define the finished fragment size. Where a BRS-H screen is used, material that cannot pass remains for further cutting. Screen openings help control discharge but do not define the maximum length of every fragment.
Overload response and maintenance access
PLC load monitoring and reverse control respond to uneven feeding loads. Removable fixed knives provide access to the double shaft cutting area for servicing. These features do not replace feed inspection or the shutdown and isolation procedures required by the machine instructions.
Conveyors and equipment interfaces
BoRay supplies supporting conveyors configured around the material form, loading method, transfer height and receiving position. For an existing line, site photos or a layout help define the connection between the shredder discharge and the next equipment.
Manufacturing
From frame fabrication to machine assembly
View BoRay workshop photos of frame welding and equipment assembly. Review the machine structure and manufacturing process alongside your project requirements.
Request a Quote
Send us your feed and processing target
You do not need a complete technical plan to start. Tell us what you process, which treatment stage you have reached and where the output should go.
Send feed photos or short videos through WhatsApp or email. Include any receiving specification, target throughput, working hours or site layout you already have.
Nick Rui
Project Consultant
I can help define the shredding task within your RDF preparation or general solid waste process, and compare single shaft, double shaft and supporting conveyor configurations.
Frequently Asked Questions
RDF preparation and solid waste shredding
Can one shredder turn mixed waste directly into RDF? +
A shredder reduces material size. Suitability as a fuel also depends on feed selection, contaminant removal and the receiving facility’s requirements. Assess shredding as part of the overall treatment route for complex mixed waste.
Does RDF preparation always need two shredding stages? +
No. The number of stages depends on the incoming material, previous treatment and required output.
Should I start with a single shaft or double shaft shredder? +
For bulky, irregular or mixed feed, evaluate BoRay’s BRDS heavy-duty double shaft range for primary reduction. For selected or pre-treated material requiring screen-controlled sizing, evaluate BRS-H. Final selection depends on the material, required throughput and output requirements.
Can I enquire before the target output size is known? +
Yes. Explain whether the output will enter sorting equipment, another shredder or a fuel preparation or feeding process. Receiving-equipment requirements, sample photos or a material specification can help narrow the options.
Can you supply supporting conveyors? +
Yes. BoRay supplies shredders and supporting conveyors. Describe your loading method, discharge destination and available space so that conveying and receiving interfaces can be reviewed.
Will the same machine achieve the same throughput on different feeds? +
Not necessarily. Composition, moisture, bulk density, feed dimensions, output requirements and continuity of feeding affect actual performance. Define the material, equipment configuration and output target when discussing throughput.
Can I use the equipment for size reduction without producing RDF? +
General solid waste projects can also be assessed. Bulky waste reduction, transfer preparation and pre-sorting are within this application scope, with the configuration selected for the specific task.
What should your material be ready for next?
Start with a feed photo or a short site video. Tell us your processing target and discuss a suitable shredder and conveyor configuration.
Contact BoRay