Displaying items by tag: Recycling
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.”
Canada/US: Holcim North America has invested in Blue Planet to support the development and commercialisation of its mineralisation technology. Blue Planet’s process sequesters CO2 with building waste feedstock such as recycled concrete, cement kiln dust (CKD) and slag to produce new aggregate products. Each tonne of Blue Planet’s aggregate can mineralize up to 440kg of captured CO2. Lafarge Canada, Holcim US, and Blue Planet will start a multi-year collaboration to help identify potential to use the mineralisation technology to further lower the carbon footprint of the companies’ cement, aggregates and concrete operations, with the potential to expand to other operations in the Holcim Group around the world.
“This is an important step for us in North America. Our vision is to transform our St Constant Plant in Montreal into a carbon campus that ultimately advances commercialisation of mineralisation technologies, including Blue Planet’s products,” said David Redfern, president and chief executive officer, Lafarge Canada. “We look forward to advancing our Net Zero strategy by leveraging mineralization technology that allows us to use the CO2 from our own cement plants to produce carbon neutral or carbon negative sand and gravel products.”
US: The US Department of Energy has granted Solidia Technologies US$2.1m in funding for the development and testing of carbonation methods for its Solidia Cement. Solidia will research synthetic supplementary cementitious materials (SCMs) production methods using direct CO2 capture and utilisation.
CEO Russell Hill said “We are proud to partner with the US Department of Energy to continue innovating and ultimately deliver on our mission to provide commercially viable decarbonisation technologies and sustainable solutions for the global construction and building materials industries. The funding will advance our carbon capture, utilisation and storage (CCUS) technologies and synthetic SCMs that can be easily integrated into Portland cement-based concrete formulations, offering manufacturers a solution that is sustainable environmentally and economically.”
Austria: The Austrian Cement Industry Association (VÖZ) has launched a roadmap for carbon neutrality by 2050. The initiative follows the 5C approach of Clinker, Cement, Concrete, Construction and Carbonation as prompted by the European Cement Association, Cembureau. Selected targets from the document include reducing the sector’s average clinker factor to 52% by 2040 from 70% in 2020, using carbon-neutral electricity from 2030 and meeting a recycling rate for concrete and demolition waste of 25% in 2050 from 10% in 2022. Sebastian Spaun, the managing director of VÖZ, highlighted the ‘Carbon2ProductAustria’ (C2PAT) initiative as a key project where capture CO2 from Lafarge Zementwerke’s Mannersdorf cement plant will be used with hydrogen to produce synthetic fuels, plastics or other chemicals.
Germany: The Ministry for Economy and Climate Protection has presented HeidelbergCement with its German Climate and Environment Innovation Prize (IKU) for its ReConcrete-360° concrete recycling process. The process retrieves hardened cement paste from waste demolition concrete for use in place of limestone in clinker and cement production. The recycled material can also bind CO2 to act as a carbon sink.
Global research and development Wolfgang Dienemann said “With ReConcrete-360°, we have succeeded in developing a limestone substitute from demolished concrete that also allows us to use the carbon-containing exhaust gases from cement production. A small revolution with a big impact: In Germany alone, the CO2 savings potential of this process is 10Mt/yr. The IKU award underlines that we can be proud of our pioneering innovation.”
GCCA launches Innovandi Open Challenge
10 May 2022World: The Global Cement and Concrete Association (GCCA) has named its first six startups to receive backing under the inaugural Innovandi Open Challenge. The startups have partnered with GCCA members to help increase cement’s sustainability towards achieving net zero CO2 concrete production by 2050. This will lead to the formation of six consortia to further test, develop and deploy their new technologies.
Carbon capture, utilisation and storage (CCUS) startups CarbonOrO, MOF Technologies and Saipem, all based in Europe, are among the participants. GCCA members are currently involved in dozens of pilot projects and aim to have 10 industrial-scale carbon capture plants installed by 2030. Other startups Carbon Upcycling Technologies and Fortera, from Canada and the US respectively, use captured CO2 to produce low-carbon cement and cementitious materials, while UK-based Coomtech has developed a low-cost drying technology using turbulent air.
GCCA CEO Thomas Guillot said “It’s a proud moment to see the industry coming together to support such innovative start-ups on their journey. Our member companies were greatly impressed by their ambition to be a key part of the climate solution. The programme is another big step forward towards unlocking innovation to help us achieve our net zero goal.” He continued “As the need for resilient and sustainable communities to support a growing global population becomes more pressing , cement and concrete will be essential to providing the infrastructure and buildings that society needs. Achieving net zero concrete relies on a number of different groups playing their part, and as an industry we’re looking outwards as well as inwards, to see how start-ups like these can support our goals.”
Switzerland: Holcim recorded net sales of US$6.75bn in the first quarter of 2022, up by 20% year-on-year from US$5.62bn in the first quarter of 2021. The group’s recurring earnings before interest, taxation, depreciation and amortisation (EBIT) rose by 16% to US$643m from US$553m. The company has upgraded its outlook 2022 to a forecast of full-year net sales growth of at least 10%.
CEO Jan Jenisch said “I am very encouraged by the record start of the year, setting a solid foundation to our Strategy 2025 – Accelerating Green Growth.”
The first quarter of 2022 brought four new bolt-on acquisitions in addition to the group’s conclusion of its US$1.35bn Malarkey Roofing Products acquisition. The company says that it remains actively engaged in supporting humanitarian efforts in Ukraine.
Holcim has also published its industry-first Climate Report 2022. The report details the company’s progress towards achieving its sustainability targets under the four pillars of its Strategy 2025 – Accelerating Green Growth. Under the Accelerating Growth pillar, Holcim reached a total of 15 markets with its ECOPlanet reduced-CO2 cement range. Under Expanding Solutions & Products, it reduced the proportion of cement sales in its consolidated sales to 57% in 2021 from 60% in 2020. Its other pillars are Leading in Innovation and Sustainability and Delivering Superior Performance. In 2021, the company used 6.6Mt of recycled construction and demolition waste in its products, against a 2050 target of 10Mt.
Chief sustainability and innovation officer Magali Anderson said “On our net-zero journey, we are walking the talk at Holcim, taking clear science-driven action to win the race for climate.”
France: CRH subsidiary Eqiom has successfully commissioned its Gennevilliers construction waste recycling pilot plant. Prior to the plant’s opening, Eqiom recycled 10,000t of construction waste in the first quarter of 2022. It is now aiming to recycle 50,000t in 2022.
The company says that its continual efforts are making the circular economy possible in the construction sector.
Austria/Germany: RHI Magnesita and Horn & Co. Group have announced the consolidation of their recycling activities in Europe under Horn & Co. RHIM Minerals Recovery. The new subsidiary aims to increase the production, use and offering of secondary raw materials for the European refractory industry. The partners say that this will place the new entity at the forefront of the circular economy for customers in cement and other process industries. At the onset, Horn & Co. RHIM Minerals Recovery will process more than 150,000t/yr of secondary raw materials.
RHI Magnesita says that it can save 1.8t of CO2 for every tonne of recycled material used in its refractory production. It now expects to achieve its goal of 10% recycled materials ahead of its previously stipulated target date of 2025. It said that this marks an important step towards achieving a 15% reduction in CO2 emissions by 2025.
CEO Stefan Borgas said “By increasing our focus in this key area, we will make a significant contribution to global climate protection. We will conserve natural resources while at the same time expanding our business.” He added “With the combination of the recycling activities, RHI Magnesita and Horn & Co. Group become the driving force of circular economy in the refractory industry. Going forward, refractory users will benefit from increasing circular economy solutions included in our full line service contracts and customers of Horn & Co. RHIM Minerals Recovery will be able to source sustainable and high-quality raw materials.”
Switzerland: Holcim has partnered with Bloomberg Media to launch the Circular Cities Barometer, an exploration of best circular economy practices from cities around the world. The platform aims to improve understandings of how to empower cities to become more circular. The partners will publish the Circular Cities Barometer’s first findings at the Bloomberg Green Summit in April 2022.
CEO Jan Jenisch said “Circularity is the opportunity of our time. It unlocks economic growth in a way that is climate-friendly, nature-positive and socially inclusive. My vision for construction is to build more new from the old with recycled materials in every new building.”