Displaying items by tag: KHD

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

China: The Conch Zongyang Line 4 preheater modernisation project, based on KHD technology, has been selected as a pilot project under the Sino-German Energy Efficiency Improvement Demonstration in Key Industries programme. The initiative will be executed by KHD, its parent company AVIC International Beijing, and Conch Group’s research and development department. Results are expected by the end of 2025.

The programme stems from a 2023 agreement between China and Germany on climate change and ‘green’ transition cooperation. The programme was announced in 2024. It evaluated 12 candidate projects before selecting the Conch Zongyang project for its integration of technologies to achieve energy efficiency and a reduction in CO₂.

This project is one of several provided by AVIC to Chinese cement producers using KHD’s pyroprocessing, grinding, alternative fuel and digitalisation solutions.

Germany: KHD will carry out a front-end engineering design (FEED) study for the new oxyfuel kiln at Heidelberg Materials' Geseke cement plant, part of the GeZero carbon capture and storage (CCS) project. The project will capture and store around 0.7Mt/yr of CO₂.

Matthias Mersmann, chief technology officer at KHD, said "At KHD, we have long recognised oxyfuel technology’s potential for cement decarbonisation and are well-positioned to contribute to this important flagship project.”

Burkina Faso: AVIC International Beijing, in collaboration with Humboldt Wedag GmbH (KHD), has won an engineering, procurement and construction (EPC) contract from Ciments de l'Afrique (CIMAF) to build a 900t/day clay calcination plant. This plant aims to integrate with CIMAF's existing clinker grinding line to produce calcined clay cement, potentially reducing CO₂ emissions by up to 30%, according to the company. KHD will be responsible for designing and equipping the plant with clay calcination technology, while AVIC, as the EPC contractor and KHD's parent company, manages the overall project execution.

KHD's system features a two-stage preheater and flash calciner with a pre-combustor, offering adaptability for the future installation of KHD’s Pyrorotor technology to maximise secondary fuel usage. The technology also includes a colour stabilisation process to maintain consistent supply of grey or black calcined clay. The project is scheduled for completion by mid-2026.

CIMAF Group Vice-President, Malik Sefrioui, said "This project is a major piece of our group decarbonisation roadmap, fully financed by IFC under a green loan form. Two other similar projects are being studied and will be launched very soon. The choice of AVIC/KHD is based on their long track record in cement pyro-processing projects. We are sure that this inaugural partnership will deliver significant added value for both parties."

China: Anhui Conch Cement (Conch Group) and AVIC International Beijing have entered a strategic agreement to combine their expertise and promote technological solutions for decarbonising cement production. The partnership will leverage Conch Group's experience in cement production and equipment manufacturing with AVIC International Beijing subsidiary KHD Humboldt Wedag International (KHD)'s expertise in equipment and engineering. The collaboration aims to expand their cooperation to include building AI-powered, smart and ‘green’ research and development platforms overseas. This will involve modernising traditional cement plants and enhancing operation and maintenance services.

Additionally, the Conch Technology and Industry Research Institute will work with AVIC International Beijing and KHD to apply cement decarbonisation technologies, such as calcined clay, oxyfuel clinker lines and electro-calcining, on an industrial scale at selected Conch production lines.

China: KHD’s management team met in Nanjing in May 2024 to strategise on advancing decarbonisation in the cement industry. The meeting focused on industry needs and sustainable practices.

CEO Jianlong Shen said "We were pleased to welcome members of KHD leadership from around the world to Nanjing. Everyone who attended had the opportunity to take part in the discussion and share their ideas and suggestions for our next steps. We look forward to sharing more about our direction in due course as we continue on our collective journey to cement beyond carbon."

India: KHD Humboldt Wedag has appointed Anurag Johari as Assistant Vice President. He has worked for KHD in India since 2005 in a variety of roles. Johari is a graduate in chemical engineering from the National Institute of Technology, Warangal in Telangana.

Northern Region Cement announced this week that it is planning to build a new cement production line in Iraq. It has signed an engineering, procurement, and construction deal with Germany-based KHD and its parent company AVIC for the supply of a 1.3Mt/yr production line. The contract has been valued at US$139m with a duration of 16 months, suggesting that the earliest the new plant might be commissioned would be from early 2025.

The Saudi Arabia-based company operates an integrated cement plant at Arar in Northern Borders Province and an integrated plant at Muwaqar, near Amman, in Jordan. It also took over a grinding plant in Basra, Iraq, in 2017 and runs this via its Um-Qasr Northern Cement subsidiary. It has not been disclosed so far where the new production line in Iraq will actually be or what type of equipment is being supplied. However, the price suggests a clinker pyro-processing line.

The timing of this project is noteworthy as it follows a number of other such announcements so far in 2023. In mid-August 2023 China-based Sinoma International Engineering said that it had signed a US$219m deal with Al-Diyar Company for Cement Industry and Industrial Investment to build a 6000t/day clinker production line with a 50MW captive power plant. The project is located in the Samawah area of Al Muthanna Province. First clinker production is scheduled from mid-2025. This followed the start of construction at another project in the Erbil province in the Kurdistan region of the country in June 2023. Kurdistan Region Prime Minister Masrour Barzani laid the foundation stone for a new 6000t/day cement plant. The DCCP Cement and Power plant is being built by local partner Dabin Group and China-based China Power Investment Corporation (PowerChina).

In May 2023 Pakistan-based Lucky Cement revealed that it was preparing to build a second production line at its integrated plant at Samawah. It runs the plant under the Najmat Al Samawah joint venture together with UAE-based Al Shumookh Group. The first 1.31Mt/yr line at the plant was started up in 2021. It said that the new proposed 1.82Mt/yr production line was intended to take advantage of renewed economic activity in Iraq, benefit from increasing numbers of construction projects and further supply clinker to Lucky Cement’s grinding plant joint-venture at Basra. Construction work on the new line was expected to start by September 2023 with a completion date scheduled by mid-2025. Earlier still in March 2023 the Iraqi General Cement Company signed a deal with Turkey-based Zodiac for the latter to build a new 1.8Mt/yr plant at the Hammam Al-Alil Complex in Nineveh Governorate.

The Cement Manufacturers Association in Iraq (CPA) has reported various meetings in 2023 it has held with the Minister of Industry and Minerals with the aim of supporting the sector. In March 2023 it was discussing developing a five year plan to increase cement production with the aim of surpassing a capacity of 40Mt/yr. For reference the Global Cement Directory 2023 placed local capacity at just under 10Mt/yr. Then, in June 2023, the conversation had moved on to talking about awarding new licences to build plants on a regional basis, warnings that capacity is growing too fast and setting standards.

All of this is positive news 20 years on from the US-led invasion of Iraq in 2003 and the insurgency that followed. The local economy has benefited from high oil prices and a period of political stability, followed by infrastructure investment. Holcim runs two cement plants in Iraq via its Lafarge Iraq subsidiary and it noted “strong domestic cement demand” in the country in 2022. The number of new cement plant projects so far in 2023 underlines a new confidence in the market. Unfortunately the war between Israel and Hamas in the Gaza Strip threatens to undermine the previous period of calm should hostilities spread. However, the news from Northern Region Cement about its proposed new plant suggests that some level of business confidence remains for now.

Iraq: Saudi Arabia-based Northern Region Cement Company has hired Germany-based KHD to build a 1.32Mt/yr cement line in Iraq. Reuters has reported the value of the contract as US$139m. The supplier said that the project will last for 16 months from its date of commencement.

Romania: Holcim Romania has successfully upgraded pyroprocessing and cement grinding equipment at its Câmpulung cement plant in Argeș County. Germany-based KHD Humboldt Wedag supplied equipment for the upgrade. For the plant’s pyroprocessing line, this included a downcomer duct, water injection system and induced draught fan, as well as an upgrade to the clinker cooler. Meanwhile, the grinding line has received a new SKS Z 2500 dynamic separator, cyclones, process ducts and separator fan. The supplier says that the upgrade has increased the Câmpulung plant’s clinker capacity and the efficiency of its operations. The work took 14 months to complete from the signing of the contract in mid-2023.