Cement News tagged under: alternative raw materials

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Spain’s cement sector recovers 57Mt of waste in 15 years

26 November 2021, Published under Cement News

The 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 production

11 October 2021, Published under Cement News

In 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 contribution

27 April 2021, Published under Cement News

France-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 process

24 February 2021, Published under Cement News

Separation 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 pozzolanas

18 January 2021, Published under Cement News

The 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 transition

14 January 2021, Published under Cement News

While 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 moves

23 November 2020, Published under Cement News

Mizu 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 project

19 October 2020, Published under Cement News

Lafarge 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 unit

17 August 2020, Published under Cement News

NTPC, 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.

Nesher Cement receives approval for AF use

06 July 2020, Published under Cement News

Israel’s Environmental Protection Ministry has approved Nesher Cement’s revised emissions permit, which will see the company replace some of its raw materials with waste. It will also use waste as fuel to reduce its dependence on petcoke. The approval comes despite protests from environmental advocacy organisation Adam Teva V’Din, which alleged that the request for permit changes reflected no effort to evaluate the expected emissions of dangerous metals, volatile organic compounds, dioxins...