Displaying items by tag: Alternative raw materials
Golden Bay Cement secures bottom ash supply
09 May 2023New Zealand: Golden Bay Cement has signed a deal with Genesis Energy for a supply of bottom ash from Huntly power plant for use in cement production at its Portland cement plant in Northland. Genesis Energy generates 20,000t/yr of bottom ash at the Huntly plant, situated in Waikato, 260km south of the Portland cement plant. The plant currently uses 15,000t/yr of fly ash from the Huntly power plant in its operations. The producer was previously investigating the use of volcanic ash in cement production in 2022. It currently uses waste tyres and wood waste as alternative fuels (AF) to produce its EcoSure low-carbon general-purpose cement.
Golden Bay Cement's general manager Gian Raffainer said "We are driven to decarbonise and achieve 30% less carbon by 2030. Contributing to waste reduction at a large scale for the benefit of all New Zealanders is incredibly exciting. It is a win-win for the environment and for Kiwis who want to use more environmentally friendly products."
Dalmia Cement (Bharat) launches Dalmia Supreme Portland pozzolana cement in Eastern India
05 May 2023India: Dalmia Cement (Bharat) has launched Dalmia Supreme cement, a Portland pozzolana cement (PPC), in the Eastern India market. The producer says that the cement is a is a specialised, best-in-class product formulated for all construction applications, offering better workability, higher density, chemical resistance and strength and faster setting times than ordinary Portland cement (OPC). Dalmia Cement already sells Portland fly ash cement under its Konark cement brand.
Dalmia Cement (Bharat)'s head of sales, logistics, technical services and marketing Rajiv Prasad said “We are excited to introduce Dalmia Supreme Cement in the Eastern market. In line with the company’s customer-centric approach, this new offering is to cater to the growing needs of a specialised product for 'Stronger, Faster and Better' construction."
Holcim Mexico launches Fuerte Más reduced-CO2 cement
30 March 2023Mexico: Holcim Mexico has commenced production of its Fuerte Más reduced-CO2 cement at its cement plants in Macuspana and Tabasco at a combined rate of 60,000t/yr. The cement offers 50% reduced CO2 emissions and 10% higher physical performance than ordinary Portland cement (OPC). The El Economista newspaper has reported that Holcim Mexico replaces some of the clinker in the cement with locally-sourced minerals from Southeast Mexico. Chemical compounds in the material colour the cement red.
The Centre for Technological Innovation for Construction (CITEC) Toluca verified the product as suitable for all applications. Holcim Mexico's industrial director Adrián Belli said that comparable green cements are currently only available in France and Italy.
Cemex publishes Integrated Report 2022
28 March 2023Mexico: Cemex has reviewed its global sustainability and financial performance during 2022 in its Integrated Report 2022. During the year, the group reduced its specific CO2 emissions by 9% from 2020 levels and by 30% from 1990 levels. It achieved a target of US$1bn-worth of investment in strategic projects over a period begun in 2020. Projects included the execution of water optimisation plans at 20% of Cemex sites in high-water stress areas. Cemex co-processed 27Mt of waste as alternative fuel (AF) in its global cement production - 67 times greater than its own non-recyclable waste footprint - and achieved an AF substitution rate of 35%. Meanwhile, the group also reduced its cement's clinker factor to 74%. Its Vertua reduced-CO2 concrete range accounted for 33% of its concrete sales. During the year, Cemex launched the world's first net zero, fully electric heavy concrete mixer truck.
In 2022, Cemex recorded sales of US$15.6bn, down by 12% year-on-year, and reduced its debt to US$408m.
Finland: VTT Technical Research Centre subsidiary Carbonaide has concluded its seed funding round, having raised funds worth Euro1.8m. Lakan Betoni, which produces precast and ready-mix concrete, led the funding, along with utilities provider Vantaa Energy. Carbonaide will use the funds to build an industrial pilot plant for its carbon neutral precast concrete product at an existing precast concrete plant in Hollola. The plant will bind captured CO2 in the product at atmospheric pressure. The process generates 50% lower CO2 emissions than precast concrete production using ordinary Portland cement (OPC). Suitable raw materials include ground granulated blast furnace slag (GGBFS), green liquor dregs and bio-ash. In trial production, the use of GGBFS gave Carbonaide's concrete a negative carbon footprint of -60kg/m3.
Other sources of loans and in-kind contributions included Finnish state innovation fund Business Finland.
Vicat and Materrup launch raw clay cement joint venture
24 March 2023France: 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.
Progressive Planet to supply PozGlass to Lafarge Canada
16 March 2023Canada: Progressive Planet has secured a contract to supply its PozGlass recycled glass-based supplementary cementitious material (SCM) to Lafarge Canada. The cement producer says that it will test the commercial viability of all PozGlass produced at Progressive Planet's Kamloops pilot plant in British Columbia, once the plant commences PozGlass production in 2024.
India: Dalmia Cement has awarded a contract for the supply of fly ash and other industrial waste to Vedanta Aluminium. Under the deal, Vedanta Aluminium will supply fly ash for use at Dalmia Cement’s cement plants across Odisha, Chhattisgarh, Meghalaya and Assam. It will deliver spent pot linings to the producer’s Rajgangpur cement plant in Odisha. The fly ash contract will remain in effect until 2028 and the pot lining contract until 2026.
Vedanta chief executive officer Sunil Gupta said “Strategic collaborations such as this will provide multiple benefits in terms of enhanced quality, sustainability and cost benefits to cement manufacturing, while helping us in gainful waste management. Our waste-to-wealth initiatives are designed to develop thriving value-chains for converting our by-products into resources for complementary industries.”
GCCA launches second Innovandi Open Challenge
15 March 2023UK: The Global Cement & Concrete Association (GCCA) held an online launch for its second Innovandi Open Challenge on 14 March 2023. The global challenge matches start-up companies with some of the world’s leading cement and concrete manufacturers, which operate in almost every country across the world, to work on initiatives to cut emissions and pioneer environmental change across the industry. The launch follows the success of the first ever Innovandi Open Challenge in 2022, which saw cement companies partnering with six start-ups, with a strong focus on carbon capture and utilisation projects.
This time around, applicants are being asked to work on the development of new materials and ingredients for low carbon concrete – a major step towards the goal of net zero concrete. Alternative materials, including construction and demolition waste, can result in far lower CO2 emissions than traditional concrete, as well as reduce the need to use virgin raw materials. The applications phase will last until mid-May 2023.
Thomas Guillot, CEO of the GCCA, said “We’re calling on the best and the brightest from around the world to join us in the urgent fight to limit global warming and help towards delivering the great prize of net zero concrete. If you are a start-up from Austria to Australia, from Brazil to Bangladesh, with an innovative idea or technology, then we want to hear from you.”
Those companies that are accepted for this year’s Innovandi Open Challenge will gain unique access to industry plants, laboratories, key networks and the expertise and infrastructure of the GCCA’s 40 members from around the world. They will also receive guidance from the GCCA and its members to help them with the development of new technology and business cases.
Claude Loréa, GCCA cement director and innovation lead, said “We’ve already seen some remarkable progress from those start-ups who’ve been working with our members on the first Innovandi Open Challenge, with several projects already in the pilot stage. This year’s theme, low carbon concrete, is equally challenging. To succeed, we need products which are affordable, scalable and easily adopted. Good luck to all this year’s applicants. We look forward to working with those selected.”
Bogala Graphite launches graphene oxide cement additive
23 February 2023Sri Lanka: Bogala Graphite has launched its new cement-strengthening graphene oxide additive. Daily FT News has reported that potential investors will be able to discuss the new technology with Bogala Graphite at the forthcoming Industry 4.0 and Industry 5.0 exhibition later in February 2023.