Ceramics, stones & porcelain
CSP contamination that looks similar to glass but degrades the recovered product — a priority removal.
Recycling
Color and contaminant sorting for recycled glass cullet.
Recycled glass is reflective and mixed by color and particle size, so lighting and reflection behaviour have to be tested against the real input. This page defines what to sort; detailed claims need verified equipment and sample conditions.
Color cullet sortingCSP & metal removalReflection-tuned
Color classes
Cullet is recovered by color.
Single-color cullet is worth more than mixed. Click a class to see what defines the accepted stream.
Flint (clear)
Highest valueClear glass is the most valuable recovered class, so even light tints, ceramics and stones have to be pulled out to protect it.
Contaminants
What must leave the cullet.
Non-glass and off-class material is defined and confirmed on the real input condition.
Metals
Ferrous and non-ferrous metal pieces separated from the cullet stream during sorting.
Off-color glass
Glass outside the target color window pulled into a side or reject stream.
Heat-resistant & leaded glass
Pyrex-type and leaded glass that must be kept out of container-glass recovery where required.
Organics & labels
Paper, plastic, labels and organic residue defined as reject during testing.
Fines & dust
Very fine particles and dust that reduce visible contrast and need handling review.
Accept / reject
From mixed cullet to single-color product.
What stays in the recovered color stream and what is ejected as contaminant or off-color — confirmed on representative samples.
FeedMixed cullet feed
Incoming cullet mixes colors with ceramics, stones, metal and off-color pieces.
Illustrative only. Real sorting depends on glass color, particle size, surface condition, reflection, lighting and the confirmed recipe.
Why it needs testing
Reflection and particle size change the result.
Glass behaviour depends on the real input, so a recipe is built from tested conditions.
Lighting & reflection
Reflective surfaces behave differently under each lighting setup, so illumination has to be tested on the actual cullet.
Fine particles & dust
Fines and dust reduce visible contrast and can mask color, so particle-size condition is reviewed first.
Claims need verified conditions
Color purity and throughput depend on input condition and equipment, so they come from verified sample tests.
How it works
From particle review to verified reject.
A sample-led loop tuned to reflection, color class and the contaminant classes you confirm in testing.
- 01Customer-prepared
Particle size review
Incoming cullet size and dust load are reviewed, because they drive contrast and presentation.
- 02Controlled lighting
Lighting & reflection test
Illumination is tuned to the reflective cullet so color and contaminants read reliably.
- 03Class definition
Color class setup
Target color windows and the CSP, metal and off-color reject classes are set from real samples.
- 04Air ejection
Reject verification
Contaminants and off-color pieces are ejected and the reject stream is verified against the target.
- 05Planning
Line planning
Feeding, dust handling, reject paths and downstream use are planned around the existing line.
Inspection path
Technologies behind the recovery.
Glass recovery is a visible-color and contaminant problem that leans heavily on tuned lighting and precise ejection control.
Real sample testing
Confirm your cullet recovery with real samples.
A glass recycling project should start from your real cullet, including the target color classes and the ceramics, stones, metal and off-color pieces that must be removed.
Request a Real Material TestOnline preview
Preview your glass recycling stream online first.
Upload sample photos for a visual accept / reject preview before sending real material. Real sorting performance still needs a machine test.
Start AI Visual Preview