Efficient glass melting, high-quality glass production and cost-effective operations are primarily determined by the glass batch composition. Often overlooked, even small changes in the batch can yield technical and operational advantages as well as significant cost savings.

Cullet is an indispensable raw material in the production of insulation wool, container glass and float glass. It enhances the melting process and yields significant cost savings, while offering key environmental advantages such as a reduced carbon footprint and the elimination of waste disposal charges.

However, cullet comes with the risk of contamination. Contaminated cullet can lead to glass defects, breakage, and decreased overall quality. Therefore, stringent cullet quality control procedures and sampling plans are essential both at the cullet treatment plant and the glass plant.

To ensure cullet quality, understanding the probability of contamination is crucial.

Using our in-house statistical calculation programs, we provide detailed answers and calculate how to optimise your procedures to align with your quality objectives. Achieving a 95% reliable (≈2σ) cullet quality control is essential, yet error probabilities are often higher than acceptable, posing significant risks to producers and consumers.

Our expertise spans the entire glass production cycle, beginning with material valuation and feasibility studies to assess how cullet and new raw materials impact melting efficiency and glass quality. We develop precise technical specifications and conduct thorough quality control assessments to enhance your internal procedures, alongside process consultancy focused on optimising glass recycling and cullet treatment workflows.

To ensure total compliance, we provide independent inspections to verify grain size and material composition. Whether you are looking to enhance your cullet quality procedures or assess raw material suitability, we offer expert consultancy and detailed assessments tailored to your specific production needs.

Interested in enhancing your cullet quality procedure or assessing your raw material suitability? Contact us today for expert consultancy and detailed assessments tailored to your glass production needs.

Projects e.g.

• Material valuation & studies: assessing suitability and impact of cullet and new raw materials on melting processes and glass quality.
• Technical specifications: developing chemical, mineralogical, and granulometric standards tailored to specific productions.
• Quality control & assessment: evaluating and improving QC procedures to meet your specific operational objectives.
• Process consultancy: optimising glass recycling stages and cullet treatment workflows.
• Independent quality control and Inspections: verifying compliance of grain size, chemical and mineralogical composition.
• Statistical analysis: assessing producer and consumer risk levels to optimise adherence to quality standards.
• Expert witness and consultancy: providing expert advice and testimony on raw material or glass recycling issues, quality failures, and production losses.