Batch reformulation presents cost savings and environmental benefits
UK-based Glass Technology Services Ltd has demonstrated that reductions in CO2 emissions, combined with significant cost savings, may be possible for glass manufacturers through batch reformulation. Carried out in partnership with Sheffield Hallam University, the EnviroGlass project proposed that substantial savings may be possible and has successfully demonstrated proof of concept for the substitution of raw materials with waste streams from other sectors - reducing energy demands, emissions and waste and contributing towards the circular economy.
In one amber glass example, these waste streams could replace raw materials at up to 8wt%, while reducing furnace temperatures by up to 39°C. Further benefits included a reduction in NOX emissions, refractory wear, landfill and transportation as well as a faster melting rate due to the form of elements in the wastes studied.
Across the wider float and container glass industry, potential benefits could amount to a reduction of more than 150,000 tonnes of CO2 emissions and £5 million in energy costs in the UK alone. In UK amber glass production, this could equate to annual savings of over £500,000 in energy costs, combined with a 35 GWh/year reduction in energy demand and a 42kT/year reduction in CO2 emissions. Across the wider float and container glass industry, potential benefits could amount to a reduction of more than 150,000 tonnes of CO2 emissions and £5 million in energy costs in the UK alone.