Conversion of tyres into cement in Whangārei

Golden Bay Cement is now reusing waste tyres to manufacture cement.

Energy & Waste

1 min read

Photography iStock

Golden Bay Cement, a subsidiary of Fletcher Building, is now reusing waste tyres to manufacture cement.293 Tyres are burned at a high temperature to replace coal for process heat, and remaining rubber and metal components are combined into cement.

This will divert up to 3 million tyres from landfill annually, which would represent around 60% of New Zealand’s total waste tyres.294 At full capacity, the plant will reduce annual carbon emissions by 13,000 tonnes and reduce total landfill waste by around 1%.295

The total cost of the project was $25 million, of which $16 million was funded by a grant from the Ministry for the Environment’s Waste Minimisation Fund.296