Glass fragments that are already crushed (cullet) coming from collection or from crushing lines need a dedicated color refining stage before recovery. A recycled glass cullet sorting system is a specialized cullet sorter: it takes the already crushed fragments and refines them through optical color sorting, removing the remaining impurities, to produce higher-quality, color-segmented cullet, ready for remelting.
A recycled glass cullet sorting system is the choice of recyclers who already have crushed cullet and want to refine it by color, without re-crushing it. The dedicated cullet sorter focuses exclusively on color refining and impurity removal, as a final stage for the higher-value recovery of recycled glass fragments. See the full range of recycling equipment and the solutions for glass recycling.
Key Advantages for Sorting Cullet by Color
• Dedicated cullet sorter, a recycled glass cullet sorting system refines already crushed fragments by color, without re-crushing.
• Optical color refining, separation of cullet by color (clear, green, brown) with optical technology.
• Removal of remaining impurities, detects and separates ceramics, stones and impurities remaining in the cullet.
• Higher-quality cullet, the refined product has maximum value at glassworks.
• Final refining stage, integrates as a final step after crushing or for collected cullet.
• Processing existing cullet, ideal for recyclers with already crushed cullet to refine.
• Precision and speed, real-time optical sorting for large volumes.
• Scalable, capacity is sized to the volume of cullet processed.
Technical Specifications, Recycled Glass Cullet Sorting System
| Parameter | Value |
|---|---|
| Feedstock | Cullet (already crushed glass fragments) |
| Function | Refining through optical color sorting |
| Colors separated | Clear, green, brown (and other shades) |
| Detection | Optical cameras and color sensors |
| Ejection | Pneumatic system (air nozzles) |
| Impurities removed | Ceramics, stones, porcelain remaining in the cullet |
| Final product | Refined cullet, sorted by color, of higher quality |
| Control | Automatic optical and pneumatic system |
| Components | CE marked where applicable |
Applications for a Recycled Fragment Separation System
A recycled glass cullet sorting system serves recyclers who already have crushed cullet (from their own crushing lines or from collected cullet) and want to refine it by color, plus operators who offer cullet refining services. The position of this system is that of a final recovery stage: it takes the already crushed cullet and turns it into a higher-quality, color-sorted product.
Refining recycled cullet is a key component of quality recycling, encouraged at European level; a recycled glass cullet sorting system delivered in Europe is designed in line with the requirements of Directive 2008/98/EC on waste. For complete glass recycling solutions, see also the complete industry solutions.
The advantage of the cullet specialization of a recycled glass cullet sorting system is its efficiency: by not re-crushing, the system focuses exclusively on color refining and impurity removal, optimized for already crushed cullet. For recyclers who already have cullet (from their own crushing or collected), this dedicated sorter is the efficient refining solution, without investing in a complete crushing line.
The color refining of a recycled glass cullet sorting system uses optical technology: the cameras scan each cullet fragment, determining the color, and the pneumatic nozzles eject it into the corresponding fraction. This refining turns mixed cullet (of a single color fraction) into cullet segmented by color, with significantly higher value at glassworks that produce glass of specific colors.
The removal of remaining impurities is an important function of a recycled glass cullet sorting system: even already processed cullet may contain residual impurities (ceramics, stones, porcelain) that escaped the earlier stages. Optical sorting detects and removes these residual impurities, raising the cullet to the quality demanded by exacting glassworks, free of contaminants that would cause defects on remelting.
The integration flexibility of a recycled glass cullet sorting system is an advantage: it can operate as a final stage after a crushing line (refining the cullet produced) or standalone (refining collected or purchased cullet). This flexibility allows recyclers to add color refining capacity to their existing operation or to offer cullet refining services to third parties.
Applications of Refined Cullet
| Refined cullet | Typical applications |
|---|---|
| Pure clear | Premium packaging, quality clear glass |
| Sorted green | Wine and beverage bottles |
| Sorted brown | Beer bottles, light-sensitive products |
| Free of ceramic impurities | Exacting glassworks, no defects on remelting |
How It Works
1. The cullet (already crushed fragments) is fed onto the conveyor belt.
2. The optical cameras scan each fragment, determining the color.
3. The system detects the color and the residual impurities (ceramics, stones).
4. The pneumatic nozzles eject each fragment into the corresponding color fraction.
5. The residual impurities are ejected separately.
6. The refined, color-sorted cullet is collected in separate fractions.
The optical and pneumatic system coordinates the refining in real time. A properly calibrated recycled glass cullet sorting system produces refined cullet, sorted by color and free of impurities, of higher quality, as a final stage for the recovery of recycled fragments.
Frequently Asked Questions
How does it differ from a crushing and sorting machine?
A recycled glass cullet sorting system does not crush, it takes already crushed cullet and refines it by color. It is a final refining stage, optimized for existing cullet. A crushing and sorting machine includes crushing; this system focuses exclusively on the optical color refining of already produced cullet.
Who is it suitable for?
For recyclers who already have crushed cullet (from their own lines or collected) and want to refine it by color, without investing in a complete crushing line. A recycled glass cullet sorting system is also the solution for operators who offer cullet refining services to third parties.
Does it remove impurities from already processed cullet?
Yes. Even already processed cullet may contain residual impurities (ceramics, stones, porcelain). A recycled glass cullet sorting system detects and removes these impurities through optical sorting, raising the cullet to the quality demanded by exacting glassworks, free of contaminants that would cause defects on remelting.
Is the delivered equipment new?
Yes. We deliver new, unused equipment, built to order, not reconditioned units. The build uses components from established suppliers, CE marked where applicable, and every system undergoes a full inspection before shipment. You receive the technical documentation and operating manuals in your language.
What makes URSTAG a premium brand?
European design, top-tier components and experience. Every machine is designed by our engineering teams in Europe and built from components by industry leaders such as Siemens, Schneider Electric, ABB, WEG, SEW-Eurodrive, NORD Drivesystems and Bonfiglioli. The result is reliable, energy-efficient and durable equipment, backed by over 15 years of experience and by delivery, installation, training and service included.
How long do installation and commissioning take?
Transport, commissioning and operator training are included and carried out by a local team, in your language. Before shipment, the system undergoes a full inspection and calibration, so your unit becomes operational quickly, with no hidden installation costs.
Can it be added to an existing crushing line?
Yes. A recycled glass cullet sorting system integrates as a final stage after an existing crushing line, refining the produced cullet by color. Alternatively, it operates standalone for the refining of collected or purchased cullet. This flexibility allows color refining capacity to be added to an existing recycling operation.
Why URSTAG?
URSTAG is a premium brand of recycling equipment, with over 15 years of experience. You don't just get a machine, you get a solution engineered by specialists, built from top-tier components and backed by a team that supports you from design through commissioning.
• European engineering, every machine and every complete line is designed by our engineering teams in Europe, with a focus on reliability, safety and energy efficiency.
• Premium components, we build on motors and automation from industry leaders: Siemens, Schneider Electric, ABB, WEG, SEW-Eurodrive, NORD Drivesystems and Bonfiglioli.
• Over 15 years of experience, we know how materials and machines behave in real-world operation, and we configure each solution for your flow and volume.
• New equipment, configured for you, we supply new units, made to order for your application, with complete technical documentation.
• Delivery, installation and training included, we handle transport, commissioning and operator training, with support throughout the equipment's life.
As a premium brand, URSTAG relies on European engineering, top-tier components and experience. You choose a partner that supports your production long term, with equipment built to run reliably in demanding industrial environments.
