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Displaying items by tag: clay

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Vicat and Materrup launch raw clay cement joint venture

24 March 2023

France: Vicat and Materrup have formed a joint venture to industrialise production and accelerate marketing of Materrup's Clay Cement 1 (MCC1) raw clay cement. The Le Moniteur newspaper has reported that the technology is based on a precursor and activator mixture which removes the need for calcination of the clay. Materrup said that this halves MCC1 cement's CO2 emissions compared with ordinary Portland cement (OPC).

The partners say that clay has better long-term feasibility than other alternative raw materials for cement production, because global reserves are currently 2Tnt.

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First Graphene signs joint development agreement with Suvo Strategic Minerals

10 January 2023

Australia: First Graphene has partnered with Suvo Strategic Minerals to develop graphene-enhanced metakaolin for use in cement and concrete production. Metakaolin is a pozzolanic material derived from kaolinite clay. The partners believe that the technology has commercial potential to improve concrete performance and reduce CO2 emissions.

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Clay foundations reduce cement consumption by 40%

13 October 2022

Australia/China: A Charles Sturt University team has found that the use of clay in soft soil foundation stabilisation can eliminate 40% of cement used in this type of construction. Australian Associated Press News has reported that China-based Kunming University of Science and Technology also supported the research.

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Indian Institute of Technology – Madras study quantifies emissions and energy savings of limestone calcined clay cement

03 October 2022

India: Research by the Indian Institute of Technology – Madras (IIT Madras) has concluded that limestone calcined clay cement (LC3) production emits 40% less CO2 than ordinary Portland cement (OPC) production, and is 20% less energy intensive. United News of India has reported that the Switzerland-based Swiss Agency for Development and Cooperation supported the study.

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National Cement Company of Alabama’s Ragland cement plant upgrade to reduce CO2 emissions by 40%

25 July 2022

US: National Cement Company of Alabama has reported that the new kiln line at its Ragland cement plant will reduce the plant’s CO2 emissions by 40%. Its energy consumption will also fall by 30% as a result of the upgrade. The new line includes a 78m-high homogenisation silo, vertical crusher, five-stage preheater and automated clay storage system. AF used in the kiln will include waste tyres, woodchip and sawdust. The new kiln will help in the Ragland cement plant’s transition to 100% Portland limestone cement (PLC) production by 2023, further diminishing its carbon footprint.

Vicat CEO Guy Sidos said "Our ambition is to use AF in all our cement plants around the world. In addition to eliminating fossil fuel energy and replacing it with recycled regional waste, our investments contribute directly to local development. We are proud of the modernisation and transformation of our Ragland site, which was our very first acquisition outside France in 1974."

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Karbonite UK develops new supplementary cementitious material

27 June 2022

UK: Karbonite UK has developed a new supplementary cementitious material consisting of mineral feedstock, geopolymers and waste biomass. The process also involves CO2 sequestration and liquid-infused CO2 absorption within the mineral structure. The material, called Karbonite, is activated at 750 – 850°C, releasing water, which is captured for recycling. Its CO2 emissions are 2.7kg/t, according to Karbonite UK. The developer says that Karbonite ground with 50% clinker yields a cement of equal compressive strength to ordinary Portland cement (OPC).

Karbonite UK is currently preparing a final report on the product for a major cement producer.

Managing director Rajeev Sood said “Karbonite offers a wealth of potential to an industry targeting net zero. We are excited to talk to cement and concrete producers about how they could integrate Karbonite technology into their existing process.”

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US lime producers announce price rises

06 April 2022

US: Lhoist North America and Mississippi Lime Company have announced price increases for their products subject to existing contractual obligations.

Lhoist North America increased its prices by 10% for lime, limestone and clay products from the start of April 2022. It blamed this on inflation upon the cost of chemical additives, electricity, explosives, diesel, mining equipment, spare parts, inbound transportation, mining services and other inputs.

Mississippi Lime Company has announced that it will increase its prices by 7% from the start of May 2022. It cited a combination of market demand, inflation and supply chain issues.

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Materrup to establish second cement-free concrete plant at Bordeaux

05 April 2022

France: Sustainable concrete producer Materrup has shared plans for its upcoming Bordeaux precast concrete elements plant. The L’Usine Nouvelle newspaper has reported that the facility will produce precast elements from Materrup’s cement-free concrete, which it produces from uncalcined clay, an activator and a precursor at room temperature. The technology, called Clay Cement 1 (MCC1), reduces CO2 emissions by 50 – 80% compared to ordinary Portland cement (OPC), according to the producer. It previously opened a Euro7m 50,000t/yr plant in the Atlantisub Business Area in Saint-Geours-de-Maremne, Nouvelle-Aquitaine.

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Maltsovsky Portland Cement reports purchase of new diesel locomotive

15 March 2022

Russia: Eurocement subsidiary Maltsovsky Portland Cement has reportedly commissioned a new diesel locomotive to deliver clay to its Maltsovsky cement plant in Bryansk Oblast. According to Russia-based media outlet Stroymedia, eight locomotives operate on the company’s 53km-long railway network during the construction season. Maltsovsky Portland Cement will reportedly replace sections of track and continue the renewal of its rolling stock during 2022.

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W&P Zement establishes raw materials processing plant at Peggau quarry

16 November 2021

Austria: W&P Zement has installed a Euro2.5m new raw materials processing plant at its Peggau quarry in Styria. The plant will introduce modern washing and sieving processes to operations at the quarry, with an additional sludge buffer for the processing of clayey material. Project manager and mining manager Jürgen Kolp said that the plant will improve the sustainability of the company’s raw materials extraction operations by increasing the limestone yield from excavated raw material.

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