Carbon dust is generated during the process of producing anodes, large carbon blocks that are consumed during aluminium smelting. High carbon content makes carbon dust suitable for use as an alternative fuel.
Over the next two years, EGA said it will increase its supply of carbon dust to the UAE cement industry to some 78,000 tonnes. The use of the company’s carbon dust is expected to reduce UAE cement companies’ requirements for other fuels, including in some cases coal imported from as far as South Africa. Reducing mining and long-distance transport of coal is expected to save approximately 36,000 tonnes of CO2 emissions over the next two years, the equivalent of removing 7,800 cars from the roads.
The company will supply the cement industry with both freshly-produced carbon dust and material produced in earlier years that the company stockpiled whilst working to find a viable large-scale industrial use. Freshly-produced carbon dust will be supplied directly to the cement industry. For stockpiled carbon dust, EGA has signed a contract with Heavy Machinery Viqa for processing and re-use, according to the statement. Heavy Machinery Viqa specialises in recovering and recycling by-products from heavy industries in the UAE.
“Creating a circular economy with one industry’s waste used as another industry’s feedstock makes environmental and economic sense, and we are glad to be working with the cement industry to pioneer this approach in the UAE. We will now re-use almost all the carbon dust we generate at EGA, improving the environmental performance of both aluminium smelting and cement manufacturing,” said Salman Dawood Abdulla, Executive Vice President, Environment, Health, Safety, Sustainability and Business Transformation at EGA. Last year, the company said it had recycled over 102 thousand tonnes of waste, up from over 96 thousand tonnes in 2017.