Displaying items by tag: CBMI Construction

France: Heidelberg Materials has ordered an MVR 5000 C-4 vertical roller mill from Gebr. Pfeiffer for its Airvault plant to grind ultra-fine Portland cement. The mill will be equipped with an SLS 4500 VC classifier to produce 145t/hr of Portland cement at a fineness of 4500cm²/g. The design allows for high-efficiency grinding and lower CO₂ emissions by reducing clinker content in blended cements. The contract is managed by China-based contractor CBMI. Commissioning is expected in the first half of 2026.

Northern-Ireland based cement producer Cemcor said this week that it has completed trials of a calcined clay cement product called CalcinX. The company started its trials in 2023 and it has been supported by Queen’s University Belfast and funding from Innovate UK. Work with commercial partners has involved precast concrete paving manufacturer Tobermore producing paviours made from 50% CalcinX as a CEM II replacement and Moore Concrete has also manufactured precast units using 50% CalcinX as a CEM I replacement. So far over 3000t of CalcinX has been produced in a number of industrial-scale trials.

David Millar, the managing director of Cemcor, mentioned his company’s plans for calcined clay in June 2022 when he was interviewed by Global Cement Magazine. The company that became Cemcor bought the Cookstown cement plant and a few other assets from Holcim at the start of 2022. It then changed its name to Cemcor in November 2022. At the time of the interview the company was looking to “...develop new value-added products, including low-CO₂ options. This will allow us to use the same amount of clinker to produce more cement.” Millar couldn’t give away too many details at the time, however calcined clay was cited specifically. It was also noted that the company had the right material in its quarry and that it was already working with partners on it.

Amongst all the other decarbonisation options available for cement plants, a slow trickle of calcined clay projects keep being announced. In January 2025, for example, thyssenkrupp Polysius said it had secured a front-end engineering design contract from Circlua for the construction of the world’s largest activated clay plant in Brazil. This project in Para state will have a capacity of 3000t/day, will use renewable energy sources and will “improve the CO₂ footprint in cement production.” CBMI Construction also officially launched a flash calcination clay project in Tangshan, Hebei province in China. In December 2024, Vicat signed an agreement with the US Department of Energy (DOE) Office of Clean Energy Demonstrations to develop the Lebec Net Zero (LNZ) project at its Lebec cement plant in California. This includes plans to produce calcined clay-based cement. Earlier in the autumn of 2024 Portugal-based Cimpor said it was preparing to convert a kiln at its Souselas plant to produce calcined clays, AVIC International Beijing and KHD said that they had secured a deal to build a 900t/day clay calcination plant for Ciments de l'Afrique (CIMAF) in Burkina Faso, and Holcim Česko said it was going to construct a calcined clay processing line at the Čížkovice cement plant in the Czech Republic.

One news story that stuck out in the autumn was the progress of a collaboration between Aumund and Holcim towards developing an electric linear calcination conveyor (eLCC). The two companies started work on the project in 2020 intending to look at the electrical calcination of clay using an Aumund pan conveyor. Initial tests of the eLCC reportedly demonstrated efficient thermal activation of clay through a combination of radiant heat and material circulation. The eLCC system is fully enclosed, insulated, has a compact design and can operate using electrical-powered renewable sources. The first industrial plant utilising this technology is scheduled for construction in 2025. Calcined clay technology and products by other industrial suppliers are available. The work by Aumund and its competitors show they are watching this market closely.

OneStone Consulting’s Joe Harder has found that only 14 clay calcination plants were operational worldwide in 2023 with a production capacity of just under 3.5Mt/yr. These are based in Latin America, Europe and Africa. In an article previewing a market report in the February 2025 issue of Global Cement Magazine, Harder predicts that by 2035 there will be 79 clay calcination plants with a capacity of just under 21Mt/yr. A steady growth of over 20 new plants annually is also expected subsequently from 2035 to 2050 as cement producers seek cost-effective ways to reduce their clinker factor. He identified installation costs, a lack of knowledge about clay-based cements, trouble obtaining mining rights and policy issues amongst other issues as holding back the use of clay calcination.

The current expectation is that calcined clay usage in the cement industry will be a minority option. Yet the size of global cement production can make a production share of, say, 3 - 8% a viable option for both cement manufacturers and equipment suppliers. The adoption of new cement products and standards can also take a long time and this clouds predictions of how far clay can go in the cement industry. At this point in the calcined clay story it is time to keep track of the new projects being set up.

Joe Harder will present a talk entitled ‘Calcined clay market trends by 2035’ at the Global FutureCem Conference taking place in Istanbul in early February 2025

Portugal: CBMI has signed an engineering, procurement and construction contract with SECIL Cement Group for the renovation of the 1800t/day clinker line at the Maceira plant.

The project includes the installation of a new firing system and a series of upgrades to improve energy and heat efficiency. The upgrade encompasses five decarbonisation measures, including a 100% alternative fuel design rate, with the aim to decrease CO₂ emissions by 30% compared to 2019 levels. This would reportedly reduce CO₂ emissions to 550kg/t of clinker.

Saudi Arabia: Eastern Province Cement Company (EPCC) will install two MVR 5000 R-4 vertical roller mills from Gebr. Pfeiffer at its Khursaniyah plant, as part of a new 3.2Mt/yr (10,000t/day) production line. The mills will grind 550t/hr of cement raw material to a fineness of ≤10%R on 90µm.

The MVR mills are expected to improve technical availability, while reducing operating costs and emissions. This project marks the first installation of MVR vertical roller mills in Saudi Arabia and is being managed by Chinese contractor CBMI. Commissioning is scheduled for the second half of 2025.

China: CBMI Construction has officially launched a flash calcination clay project in Tangshan, Hebei province. Karen Scrivener, head of the Laboratory of Construction Materials at the School of Engineering at the Ecole polytechnique fédérale de Lausanne (EPFL), attended the event. Scrivener is a prominent researcher and advocate for LC3 (limestone calcined clay cement).

CBMI’s other clay projects around the world as a contractor include the SPL Calcined Clay Project in France, the CIZ Calcined Clay Project (rotary calciner) in the Czech Republic, the Guayaquil Calcined Clay Project in Ecuador and the Ivory Coast Calcined Clay Project (flash calciner).

Dominican Republic: Domicem held a ceremony marking the lighting up of the kiln on the new second production line at its Sabana Grande de Palenque cement plant in San Cristóbal province in mid-October 2023. Company engineers, staff from China-based CBMI Construction and representatives from parent company Colacem were present for the event. The cement company signed a contract with China-based Sinoma Construction for a 3500t/day clinker production line in 2021. The project had a reported investment of US$120m. The official inauguration of the new line is scheduled to take place on 22 November 2023 and the President of the Dominican Republic is expected to attend.

Dominican Republic: Germany-based Gebr. Pfeiffer has received an order for an MVR 3750 C-4 vertical roller mill from Estrella Group subsidiary Cemento PANAM. Cemento PANAM plans to install the mill at an upcoming grinding plant. It will be equipped with an SLS 4000 VC classifier and will produce 155t/hr of blended cement. China-based CBMI Construction will handle the order.

CBMI Construction previously won a contract to build a Cemento PANAM grinding plant in the Dominican Republic in March 2023. Global Cement News reported the capacity of the plant as 1.23Mt/yr.

China/Germany: CBMI Construction and mill supplier Gebr. Pfeiffer have signed a cooperation agreement to supply integrated calcined clay plants to the global cement industry. The partners say that their plants will offer clay calcination and grinding, giving cement producers a high performance solution, all in one place.

CBMI Construction and Gebr. Pfeiffer have carried out numerous recent cement projects in overlapping geographies, including Western and Southern Africa and Russia.

Senegal: China-based Sinoma CBMI Construction has commissioned a new production line at Ciments du Sahel’s Kirene plant near Dakar. The new 6000t/day line is intended to replace the plant’s existing third production line. Ciments du Sahel signed a contract with Sinoma CBMI to upgrade the plant in 2020.

Zimbabwe: Government capital controls are delaying the handover of a new vertical cement mill ordered from China-based CBMI to Lafarge Zimbabwe. The cement producer still owes the supplier US$5.2m but has been unable to make the payment due to economic measures the government has taken to avoid depreciation of the local currency, according to the The Insider newspaper. The subsidiary of Switzerland-based Holcim is unable to obtain a certificate of completion from the supplier until the transaction has been completed. CBMI handled the order and Germany-based Gebr. Pfeiffer supplied the mill. The outstanding debt to CBMI may also delay Holcim’s deal to sell Lafarge Zimbabwe to Fossil Mining, which was announced in June 2022.