Displaying items by tag: mining
CR Minerals to produce pozzolans from mining waste
17 November 2022US: CR Minerals has signed a contract with mining company Rio Tinto for the supply of mineral waste from the latter's subsidiary US Borax's boron mining operations in California. CR Minerals will use the waste to produce pozzolans to replace cement in local concrete production.
CR Minerals president Jeffrey Whidden said "We have been working with Rio Tinto for several years now to bring this concept to life. Taking what was once considered waste streams and turning them into usable products for the construction materials industry is part of the vision of our company."
Betolar patents mining waste-based binder
10 June 2022Finland: Betolar has patented a method for producing binder from the by-products of metal extraction. The method uses metallic effluent, sludge and dregs generated by the bioleaching of ores.
Chief innovation officer Juha Leppänen said “The ability to produce new solutions for the utilisation of sidestreams is essential to the functioning of our ecosystem. Betolar has a rapidly growing patent portfolio considering its age. We have already obtained approved patents for five inventions of ours.” He added “Waste materials, such as gypsum sludge, can also be used in other construction applications which will be of great value to Betolar's business in the future.”
France: Holcim has acquired six new aggregates quarries in Eastern France from FAMY Group. The group says that the quarries serve the Dijon, Lyon and Geneva, Switzerland, markets. It previously acquired new aggregates and ready-mix concrete operations in the ‘growing’ region in 2021.
Europe, Middle East and Africa regional head Miljan Gutovic said “This acquisition expands our footprint in the highly attractive Rhône-Alpes region, confirming our ambition to revitalise key urban areas from Lyon to Geneva. This expansion is in line with our strategy to accelerate green growth and play our part in Europe’s net-zero transition. Our combined businesses and improved market access will provide an excellent platform to further strengthen our range of sustainable building solutions, such as ECOPact green concrete. I warmly welcome all FAMY Group employees into the Holcim family and look forward to unleashing our next era of growth together.”