Displaying items by tag: Alternative raw materials
Prometheus Materials secures concrete masonry unit certificates for microalgae-based biocement
22 February 2023US: Prometheus Materials’ microalgae-based biocement has secured certification for use in concrete masonry unit (CMU) mixes. The cement now holds an ASTM C129 certificate for use in non-loadbearing CMUs and an ASTM C90 certificate for use in loadbearing CMUs. Prometheus Materials’ biocement produces concrete with comparable or superior mechanical, physical and thermal properties to ordinary Portland cement (OPC)-based concrete. It offers little-to-no CO2 emissions and 95% of water used in production is recycled.
Prometheus Materials CEO Loren Burnett said “We are thrilled to have achieved these two foundational certifications as we proceed in full force with our goal of decarbonising construction. Prometheus Materials’ product is poised to change the future of construction, converting one of the most carbon-polluting industries to a low-carbon – and one day net-zero carbon – reality.”
India: Antony Waste Handling Cell Limited (AWHCL) has won a US$124m contract for construction and demolition waste management services in Mumbai. Press Trust of India News has reported that the contract covers nine municipal subdivisions of the city and will last until 2044. AWHCL said that the contract will enable it to develop the circularity of cement and concrete within the local economy. It expects to commission 600t/day-worth of waste processing capacity by March 2023. The waste management company expects a recovery rate of 25% recyclable materials.
AWHCL chairman and managing director Jose Jacob said "This sub-segment of solid waste management provides tremendous growth opportunities given the number of infrastructure development projects underway, and the government's push to accelerate the economic growth with infrastructure being one of the important growth pillars."
Hallett Construction Materials orders Christian Pfeiffer ball mill
03 February 2023Australia: Germany-based Christian Pfeiffer has received an order for a grinding circuit comprising a 16.3m-long ball mill and a QDK T 250-Z type separator from Hallett Construction Materials. The circuit will have a capacity of 84t/hr, according to the supplier. Hallett Construction Materials plans to use the equipment at its upcoming Port Augusta slag cement grinding plant. The plant is scheduled for commissioning in January 2024.
Hallett Construction Materials chief executive officer Kane Salisbury said, “For us, the sustainability of the plant is the highest priority. That’s why we manufacture cement containing 100% slag.” Salisbury added “The Christian Pfeiffer process experts convinced us that the ball mill, in combination with a high efficiency separator, is the best system to serve our requirements.”
Unacem Perú to 'significantly increase' cement capacity
23 January 2023Peru: Unacem Perú plans to 'significantly increase' its cement production capacity 'in the medium-term future.' Prior to that, the producer will invest US$130m in capital expenditure during 2023, double what it invested in 2022. The investments will go towards slightly expanding the producer's capacity from 8.3Mt/yr and increasing alternative raw materials use in its cement production, including pozzolan and ground granulated blast furnace slag (GGBFS). Additionally, it will open its new Manchay limestone quarry in Pachacámac in early 2023.
Unacem said that it increased its cement sales 'unexpectedly' during 2022. It operated at 85 - 90% capacity utilisation, and continued to export clinker.
Lhoist and others secure Euro4.5m in EU funding for carbon capture and utilisation project
19 January 2023Belgium: The EU Innovation Fund has awarded Euro4.5m to a consortium consisting of Lhoist, gas provider Fluxys Belgium, concrete products company Prefer and carbonation technology developer Orbix. The collaborators are working on a project called CO2ncrEAT. The project will carbonate steel sector by-products with captured CO2 from Lhoist's Hermalle lime plant to produce alternative building materials. CO2ncrEAT will be the first project to employ Orbix's innovative technique for the purpose. Fluxys Belgium's pipeline technology will convey the Hermalle plant's emissions over a distance of 2km to a Prefer concrete blocks plant.
The consortium said that it will use 12,000t/yr of CO2 to produce 100,000t/yr of reduced-CO2 concrete blocks. The use of alternative raw materials in the blocks will further reduce their carbon footprint by 8000t/yr.
Lhoist Western Europe managing director Vincent Deleers said “The project fits perfectly with our willingness to actively develop CO2 capture and sequestration technologies that are essential to the sustainability of our industry. We are delighted that our work on innovative solutions has been recognised by the European Innovation Fund and we look forward to working with our partners to bring CO2ncrEAT to the next level.”
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.
Holcim acquires Nicem
10 January 2023Italy: Holcim announced its acquisition of Nicem, Italy's ground calcium carbonate market leader. The group said that it plans to use Nicem's ground calcium carbonate as raw material in production of its ECOPact and ECOPlanet reduced-CO2 cement and concrete range.
Holcim's Europe regional head Miljan Gutovic said “Nicem complements our existing operations perfectly and allows us to further leverage our expertise in green formulation, opening a new source of alternative materials to decarbonise our ready-mix concrete. I look forward to welcoming the employees of Nicem to the Holcim family, whose valuable expertise will help us accelerate green growth.”
Southeast University develops coral-based concrete
12 December 2022China: A team at Southeast University has developed an alternative concrete that contains 8% cement. It uses coral reef limestone fragments and biodebris with an upper particle size of 53mm as fine aggregate. The researchers concluded that the material proved suitable for use in precast concrete paving slab production.
Titan America completes Portland limestone cement conversion
30 November 2022US: Titan America has successfully converted its cement operations to 100% Portland limestone cement (PLC) production. As part of its transition, the producer established two new 70,000t storage domes to serve its key markets.
President and CEO Bill Zarkalis said "I would like to thank all members of the Titan America team who are able and energised to provide the highest performing products to our customers, and do so with our 2030 goals for a sustainable future at top of mind. Our conversion to 100% Type IL PLC production and our expanded investments to deliver lower carbon products and solutions to customers showcase the progress we have made and our commitment to accelerate our contribution to addressing climate change."
Ecocem launches ACT alternative materials cement product
29 November 2022Ireland: Ecocem has announced the launch of ACT, an alternative materials-based cement ingredient capable of reducing the CO2 emissions of cement production by 70%. The developer says that any existing cement plant can produce ACT at comparatively low cost. The technology is globally scalable, and Ecocem expects to achieve full commercial availability across its Benelux, France, Ireland and UK markets by 2025.
Ecocem managing director Donal O’Riain said “We are eager to work closely with the cement industry and with policymakers to support the scaling and development of a new generation of low-carbon cements. Current policy priorities on decarbonising cement have now been overtaken by technology. Fully effective deployment of ACT requires policymakers to provide effective support well beyond their traditional emphasis on CCUS as the core cement decarbonisation technology.”
Ecocem's investors include France-based building products company Saint-Gobain and US-based Breakthrough Energy Investments.