Displaying items by tag: Alternative raw materials
Alpacem Zement Austria appoints Christine Gröll as head of material flow management and process control
23 August 2023Austria: Christine Gröll has taken over the role of head of material flow management and process control at Alpacem Zement Austria. The producer created the new role for Gröll, who will lead a dedicated team of eight people to achieve net zero CO2 cement production at the company’s Wietersdorf cement plant by 2035. The team will focus on alternative raw materials and alternative fuel (AF) substitution.
Gröll is an Ulm University-trained chemist with over four years’ experience working within Alpacem Zement Austria. Prior to that, she worked as a research associate for Schwenk Zement in Germany, on the development of its Celitement hydraulic binder.
Alpacem Zement Austria’s technical director Florian Salzer said "It fills us with particular pride that we were able to fill the new department with talented employees from our own company. This clearly underlines the potential that exists in our team and emphasises the extensive expertise that we have built up. We are also pleased that the department management is in the competent hands of Christine Gröll, who brings an incomparable mix of research drive and practical experience.”
Spain: Residents of Cartagena, Murcia, have protested Cemex’s plans to begin mining pozzolan at new sites locally. The Murcia Plaza newspaper has reported that the protestors are calling for a mining ban, in line with their interpretation of the area’s Rural Area of Special Environmental and Social Sensitivity designation.
Spain: Switzerland-based Synhelion and Cemex España plan to build a new clinker plant near Madrid. The plant will use Synhelion’s synthetic fuel to produce clinker from clay and crushed sand at 1200°C. The fuel consists of a gas produced from green hydrogen and captured CO2, using solar heat. La Tribune de Genève Online News has reported that Synhelion’s thermochemical reactor further helps to capture CO2 emissions from clinker production. A study by the Swiss Federal Institute of Technology Lausanne indicated that this can halve the cost of carbon capture at cement plants, to below Euro85/t.
Siam Cement Group's sales dip in first half of 2023
10 August 2023Thailand: Siam Cement Group (SCG) recorded sales of US$7.22bn in the first half of 2023, down by 17% year-on-year from US$8.69bn. Cement and building materials accounted for US$2.6bn (36%) of sales, behind chemicals at US$2.74bn (38%). The company's earnings before interest, taxation, depreciation and amortisation (EBITDA) dropped by 24% to US$915m from US$1.21bn. Meanwhile, its profit excluding extra items dropped by 49% to US$279m from US$543m. Cement and building materials contributed 78.5m (28%) of group profit, down by 38% from US$126m (23%).
During the first half of 2023, sales of alternative CEM-I and CEM-II cement rose above 50% of SCG's cement sales for the first time, compared to 41% throughout 2022. The group substituted 22% of all cement fuel with alternative fuel (AF) across its operations, and 22% of cement fuel in its Thai domestic business. SCG invested US$91.5m in capital expenditure in its cement and building materials business throughout the first half of 2023.
Sweden: CemVision has reported the successful conclusion of a large-scale production pilot of its ultra low carbon alternative clinker. CemVision produces the clinker using up to 100% recycled industrial secondary materials from the steel and mining sectors. CemVision says that its production process heats the raw materials using renewable electricity, and without the use of fossil fuels. The alternative clinker offers CO2 reductions of up to 100% compared with ordinary Portland cement (OPC) clinker. CemVision has opened an invitation to possible collaborators to help scale up production, with a target of hundreds of thousands of tonnes per year.
Chief technical officer Claes Kollberg said "We are a climate-first company, making high performance cement. With our competence and experience, it is our duty to produce the most environmentally friendly cement for each application."
Australia: Alternative cement and concrete producers have welcomed a new Australian civil engineering standard that allows builders to use reduced-CO2 geopolymer concrete in infrastructure projects. Wagners, which produces Earth Friendly Concrete (EFC), said that the revision has removed on if its key barriers to wider market acceptance. EFC replaces 100% of cement with supplementary cementitious materials, including ground granulated blast furnace slag (GGBFS) and pulverised fly ash, by virtue of its binder technology. Wagners previously supplied EFC for the London Power Tunnels project in the UK, based on local technical approval-based building codes. The producer now expects a new standard like the Australian one to follow in the EU.
France: Vicat and Materrup plan to build their first reduced-CO2 MCC1 raw clay cement plant at Carbonne in Occitanie. The plant will have a capacity of 60,000t/yr. Vicat and Materrup plan for their joint venture to subsequently build three further units across France.
Vicat's chair and chief executive officer Guy Sidos said "This new structure will enable Vicat to provide complementary very low-carbon solutions and meet the different needs of players in the construction sector. Development prospects are promising."
Nigeria: Lafarge Africa has applied to the Standards Organisation of Nigeria (SON) to use the product name Roadcem for its CEM-II Portland limestone cement (PLC) when sold in bulk. The Nigeria Tribune newspaper has reported that Lafarge Africa supplies PLC in bulk for use as a soil stabiliser in roadbuilding. It sells supplies the product bagged to retailers as Classic PLC.
SON certified Lafarge Africa's PLC under its Mandatory Conformity Assessment Programme.
Germany: Dyckerhoff has launched Dyckerhoff Weiss Blue Star, a pozzolanic white cement CEM IV/A (P) 42.5 R product. It was approved by the German cement association, the VDZ, in mid-June 2023 and is now being manufactured at the Amöneburg plant. The lower CO2 credentials of the new product have been promoted as it releases around 15% less CO2 compared to CEM I cements. It is also notable for being a blended white cement.
Bangladesh: The government inaugurated the Dasherkandi sewage works, the largest sewage treatment plant in South Asia, in Dhaka on 13 July 2023. United News of Bangladesh has reported that the plant will incinerate dried sewage sludge to produce 16,400t/yr of ash. The plant will supply this to the local cement industry for use as a raw material.
The Dasherkandi sewage works is one of five planned new sewage plants expected to process 100% of Dhaka's sewage by 2030.