Displaying items by tag: Dyckerhoff

Cementir Group launched two of its lower carbon cement products in the Middle East and Africa markets this week. We’ll take a look at this in more detail and cover other recent products news from cement producers.

Egypt-based Sinai White Cement will manufacture the products under Cementir’s D-Carb umbrella. One will be a Limestone Portland cement, to the CEM II/A-LL 52.5N specification EN197-1, with around a 10% clinker reduction. The other will be CEM II/B-LL 42.5N with around a 20% clinker reduction. Both of these reductions are in comparison to Aalborg White CEM I 52.5R. D-Carb is the name of Cementir’s product range for white low-carbon cements. It was launched in European markets in 2024, with II/ALL 52.5R cement, and then expanded to Asia Pacific regions, including Australia, in early 2025. Cementir says that its customers can switch to D-Carb from CEM I as it “integrates well with their production processes without requiring major formulation changes.”

In late October 2025 Dyckerhoff revealed that it was the first cement manufacturer in Germany to receive general building authority approval (abZ) for the use of CEM VI (SLL) cement in accordance with DIN EN 197-5. The German Institute for Building Technology (DIBt) granted approval for Dyckerhoff’s Lengerich cement plant. CEM VI is a newer type of composite cement similar to CEM II but with a lower clinker content. The SLL type that Dyckerhoff wants to make has a clinker content of 35 – 49 %, granulated blast furnace slag of 31 – 59% and limestone of 6 – 20%. The company says that this cement can be used in more than 60% of all concrete types produced in ready-mixed concrete plants. Its composition is also useful for low-carbon concretes when no fillers, such as fly ash, are available. Dyckerhoff added that the low hydration heat of the cement has a particularly positive effect in massive cast components.

Earlier in October 2025 Rohrdorfer held an inauguration ceremony for a new pilot unit for calcined (they say tempered) clays at its Rohrdorf cement plant. The pilot project started in July 2025 and has been processing up to 50t/day of raw clay. When Rohrdorfer launched the project in early 2024 it said that it was going to use waste heat from the main production line and was also considering the use of hydrogen to provide the remaining amount of heat required. Waste gases produced during calcination were also going to be fed back into the existing waste gas cleaning system of the clinker production line after leaving the pilot plant to further reduce emissions. Rohrdorfer said that its approach was going to be the first time waste heat recovery was going to be used in conjunction with calcining clay.

Meanwhile, in West Africa, Dangote Cement inaugurated its new 3Mt/yr cement plant near Abidjan in the Ivory Coast in mid-October 2024. Around the same time the company launched various products in the country, including its CEM I and CEM II brands 32.5R, 3X42.5N, 3X42.5R and 52.5N. This is a more traditional range of cement products compared to the ones above but note the highlighting of strength. This has been a key selling point for products in this part of the world previously, hence its focus. CEM II is a blended cement that uses lower levels of clinker. One clinker substitute in CEM II products is calcined clay. Gebr. Pfeiffer, for example, said in August 2025 that it was to supply a vertical roller mill to Ciments de Côte d'Ivoire (CIMCI) for clay grinding at its cement plant. There are also a number of other calcined clay projects in the Ivory Coast and other countries in West Africa. Further afield, JK Cement in India also started to market its LC3 clay calcined cement product line in October 2025.

Finally, US-based Amrize launched its ‘Made in America’ label for its cement range this week, “offering builders the guarantee of American manufacturing and quality, supporting American jobs and local communities.” Readers may recall that Amrize was recently owned by Switzerland-based Holcim. However, the company is currently keen to point out that its cement products are “made in the US from its raw materials and processing to manufacturing, meeting rigorous US performance standards.” Amrize does sell blended cements including FortiCem Portland-Pozzolan Blended Cement, ECOPlanet Cements and OneCem Portland Limestone Cement.

Most of the news stories highlighted above demonstrate a trend for blended cements with lower clinker factors. There’s no real change here. This has been happening for a long time and it is being driven by both profit and sustainability motives, although the current bunch of stories may also be turning up to coincide with the COP30 conference in Brazil. Note the inclusion of places outside of Europe and the drive for new blends. Another factor to consider here is protectionism in certain markets, as Amrize’s marketing drive suggests. New blends will also require new certifications, standards and approvals as is the case with Dyckerhoff’s work on CEM VI (SLL). The next trend to watch for will be the market reaction to carbon captured cements, such as Heidelberg Materials’ evoZero product. Will end users pay a premium for zero-carbon cements?

Germany: Dyckerhoff has received general building authority approval for the use of CEM VI (S-LL) cement produced at its Lengerich plant. The German Institute for Building Technology granted the approval for the plant in October 2025 for almost all exposure classes. It combines clinker, granulated blast furnace slag and limestone to produce cement with a lower CO₂ footprint, low heat of hydration and low effective alkali content.

Germany: CI4C has installed the final modular component of its carbon purification unit (CPU) at the Schwenk Zement plant in Mergelstetten. The unit is 31m long with a cross-section of 5 x 5m, installed using a tandem lift.

The unit completes major construction work at the CO₂ capture pilot project. The CPU will clean and liquefy CO₂-rich exhaust gas from the oxyfuel kiln and processes it to food-grade quality, enabling its reuse in purified form. Final mechanical and electrical works are underway ahead of commissioning in late summer 2025.

European cement producers Buzzi, Dyckerhoff, Heidelberg Materials, Schwenk Zement and Vicat established CI4C in 2019 to implement the catch4climate initiative. The 450t/day clinker line and CPU have been purpose-built at the plant, which has received investment of over €120m, and will be used solely for research and development.

Ukraine: The cost to rebuild Ukraine post-war is projected at US$487bn, according to a report commissioned by the United States Agency for International Development. The report states that to support the reconstruction, Ukraine must produce 15-16Mt/yr of cement for three years, a significant increase from current capacities. Protectionist measures in place since 2019 have restricted cement imports and a decline in production and a shrinking market could lead to an increase in construction costs, according to the Kyiv Independent.

Amid these projections, CRH, which operates three plants in Ukraine, announced in summer 2023 that it aims to purchase two more from Buzzi's subsidiary Dyckerhoff. This deal is valued at €100m, with the company stressing the importance of its investments in Ukrainian cement plants to boost the country’s domestic production to 15Mt/yr, according to Forbes Ukraine. The deal is reportedly under scrutiny by Ukraine's Anti-Monopoly Committee due to market concentration concerns, which could drive up cement prices and overall reconstruction costs.

Serhiy Pylypenko, CEO of the Ukrainian building supplies firm Kovalska, Ukraine’s largest cement user, said “We need more players and to diversify the market instead of making it more compact because the competition is very weak. Market concentration allows uncontrolled pricing and the cost of construction and the cost of recovery to skyrocket."

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.

Italy: Buzzi Unicem reported first-quarter sales of Euro956m in 2023, up by 20% year-on-year from Euro800m in the first quarter of 2022. The producer's cement volumes dropped by 8.8% to 5.8Mt from 6.36Mt. It attributed this to a general slowdown of the construction sector across its markets. Local low demand from the residential market and adverse weather compounded the regional sales contraction in Central Europe. On the other hand, the group recorded volumes growth in Mexico and Russia and stability in Brazil. Both Mexico and Brazil produced revenues growth, while Buzzi Unicem's revenues fell in Russia due to the effect of the appreciation of the ruble against the comparison period in 2022, when the start of the on-going Russian invasion of Ukraine devalued it.

Overall, the group expects to 'easily' match its 2022 full-year earnings before interest, taxation, depreciation and amortisation (EBITDA) in 2023. It said that that it could not currently delineate a 'clearly different picture,' but added "The stabilisation of energy prices, albeit at higher levels than in 2022, if confirmed, will allow us to have better visibility on the unfolding of the production costs from spring onwards."

Germany: The Catch4Climate project says it is ready to build an oxyfuel pilot unit at Schwenk Zement’s Mergelstetten plant following approval by the Stuttgart Regional Council. The project comprises Dyckerhoff, Heidelberg Materials, Schwenk Zement and Vicat, and It has set up a research company called CI4C to run it. Over Euro120m will be invested towards building a dedicated 450t/day production line to test the oxyfuel process. Jürgen Thormann, the Technical Managing Director of CI4C, said that this is the first time a so-called ‘pure’ oxyfuel process will be used for CO₂ capture. At a later stage in the project the consortium plans to use the captured CO₂ to produce so-called ‘reFuels’, climate-neutral synthetic fuels such as kerosene for aircraft, with the help of renewable electrical energy. Commissioning of the unit is scheduled for mid-2024.

Italy: Buzzi Unicem recorded a net profit of Euro88.7m in the first half of 2022, down by 58% year-on-year from Euro210m in the first half of 2021. The group said that its recurring profitability worsened across its markets, with the exception of Russia. It also noted ‘substantial stability’ in the Czech Republic. Its consolidated sales, including those of its Brazilian and Mexican businesses, were US$2.41bn, up by 18% from US$2.05bn.

The group recorded cement sales volumes of 14.2Mt, down by 4.1% from 14.8Mt. Volumes fell by 27% in Eastern Europe and by 28% in Italy, but rose by 27% in Central Europe and by 8% in the US. Excluding Russia, the producer’s fuel costs per tonne of cement rose by 8.8% year-on-year to approximately Euro8.80, and its total energy costs rose by 20% year-on-year to Euro234m.

It implemented continued price rises across all markets except Mexico during the half, with the sharpest rises recorded in Italy and Ukraine.

Germany: ThyssenKrupp Industrial Solutions’ Polysius division says that it has been commissioned by Buzzi Unicem, HeidelbergCement, Schwenk Zement and Vicat to build a pure oxyfuel kiln system at the Mergelstetten cement plant as part of the Cement Innovation for Climate (CI4C) project. No dates of the start of construction or final project commissioning of the industrial trial have been disclosed. CI4C was originally formed in 2019.

The Polysius pure oxyfuel process is a new type of clinker production process in which the otherwise normal ambient air is replaced by pure oxygen in the kiln combustion process. One advantage of the technology is that atmospheric nitrogen is eliminated from the clinker burning process leading to much higher concentrations of CO₂ in the exhaust gas compared to a conventional kiln. As such the process aims to concentrate, capture and reuse almost 100% of the CO₂ produced in a cost-effective manner. The medium-term goal is to further process the captured CO₂ with the help of renewable energy into products such as kerosene for air traffic.

Czech Republic: Cement Hranice’s sales rose by 13% year-on-year to US$89m in 2021. Its cement sales rose most sharply in its domestic Czech market, especially in the second half of 2021. As a result, the company increased its net profit for the year by 4% year-on-year to US$25.6m.

Czech News Agency Business News has reported that the company said "The past year was marked by increased demand for cement. Especially at the end of the year, we were forced to reduce our clinker and cement stocks to the lowest possible level, but we still had to slightly reduce deliveries to our customers."