Cement News tagged under: alternative raw materials
New material research aims to reduce the environmental impact of cement and steel industries22 December 2021, Published under Cement NewsResearchers from the Department of Materials Science and Engineering at the University of Sheffield are developing processes and technologies for the sustainable manufacture of cement, by incorporating iron-rich by-products from the steel industry. The research programme, which starts in June 2022, will be known as 'FeRICH: developing iron-rich cement for the valorisation and upcycling of steel slags'. It will look at ways to upcycle the by-products of the steel industry, leading to the pr... |
Spain’s cement sector recovers 57Mt of waste in 15 years26 November 2021, Published under Cement NewsThe Spanish cement industry has recovered 57Mt of waste from 88 sectors between 2004-19, reports the Fundación CEMA in collaboration with Institut Cerdà. This has prevented the release of 1Mt of CO2 emissions to the atmosphere and savings of EUR115m by not sending the waste to landfills. The report confirms that the optimisation of synergies has resulted in the cement sector becoming one of the largest recyclers of mineral waste in Spain and a leader in energy recovery. It has injected alm... |
Belterra clay could replace limestone in cement production11 October 2021, Published under Cement NewsIn a study, funded partly by the Brazilian Ministry of Education, Martin Luther University Halle-Wittenberg (MLU), Germany, and Brazil’s University of Pará, have found that CO2 emissions can be reduced during cement production by up to two-thirds by adding Belterra clay, unused overburden from bauxite mining. "This layer of clay can be up to 30 metres thick and covers the bauxite deposits in the tropical regions of the earth, for example in the Amazon basin," explains Professor Herbert Pöl... |
Vicat’s SeRaMCo contribution27 April 2021, Published under Cement NewsFrance-based multinational Vicat group has been contributing to the European SeRaMCo (Secondary Raw Materials for Concrete Precast Products) project, aimed at reducing the carbon footprint of the construction sector by finding beneficial uses for inert waste from demolition sites. The company has been undertaking industrial trials to incorporate fines derived from demolition concrete as a raw material for cement production – an initiative that forms one aspect of Vicat’s circular economy dri... |
Separation Technologies starts new fly ash reclamation process24 February 2021, Published under Cement NewsSeparation Technologies (Titan Cement group) has commissioned the world's first industrial-scale fly ash drying and electrostatic separation plant to reclaim fly ash from nearby coal ash basins. Located at Talen Energy's Brunner Island Steam Electric Station, the pilot facility combines Separation Technologies’ new proprietary drying and screening system and electrostatic separation for removing unburned carbon from fly ash for use in concrete construction. Removing the unburned car... |
Fly ash and pozzolanas18 January 2021, Published under Cement NewsThe drive for alternative raw materials has put the spotlight on fly ash and pozzolanas. However, their use in cement has been around for some time. This month Arthur Harrisson looks at their origin and performance in cement. Pumice rock A pozzolana is a material which, when mixed with a hydraulic cement, will react with the lime from the cement and water to produce cementitious hydration products of its own. The most familiar types of pozzolanic materials in common use are low-... |
Canada’s low-carbon transition14 January 2021, Published under Cement NewsWhile the coronavirus pandemic has impacted cement demand in Canada, the country’s cement industry continues to work towards a low-carbon cement sector. ICR speaks with Adam Auer, environment and sustainability vice president of the Cement Association of Canada, about the industry’s drive towards decarbonisation. Adam Auer, Cement Association of Canada, highlights the steps taken by the industry towards a low-carbon cement sector Canada’s cement market started 2020 ... |
Mizu’s modernisation moves23 November 2020, Published under Cement NewsMizu Cimentos Especiais, Brazil’s fourth-largest cement producer, continues to invest in its production base employing sustainable production technologies. Part of the country’s business conglomerate Polimix, the cement producer also forges partnerships with other Polimix subsidiaries to support the production of durable concrete. By Mizu Cimentos Especiais, Brazil. Mizu Cimentos Especiais operates 7Mta of cement production capacity in Brazil Mizu Cimentos Especiais has 7Mta of ... |
Lafarge Canada, Geocycle Canada and Rio Tinto partner for circular economy project19 October 2020, Published under Cement NewsLafarge Canada, Geocycle Canada and Rio Tinto, North America’s only primary aluminium producer, are working together to reuse waste from the aluminium smelting process to make cement. The circular economy project aims to reduce the need to extract new raw materials and create more value from waste. Geocycle Canada, part of Lafarge Canada, and Rio Tinto have developed a new product, Alextra, made from spent pot liners that would otherwise be sent to landfill. Alextra is the result of years ... |
NTPC begins the bulk supply of fly ash from new unit17 August 2020, Published under Cement NewsNTPC, India’s largest energy conglomerate, has begun the bulk supply of fly ash to cement plants from its new Rihand project in Uttar Pradesh. "NTPC Ltd has developed an infrastructure at Rihand project in Uttar Pradesh to transport fly ash in bulk to cement plants, located at distance, at a cheaper cost," said a company statement. The development is in line with the company’s commitment towards 100 per cent utilisation of fly ash from power plants. |