Displaying items by tag: Sustainability

The National Development and Reform Commission and other government bodies in China released plans this week to cap clinker production capacity at 1.8Bnt/yr by the end of 2025. Energy efficiency of existing capacity will be used as the driver to determine which production lines can remain open. 30% of capacity will be required to be above the benchmark energy efficiency level. Plants below this line will be obliged to upgrade or face elimination.

Points of interest from the longer release include detail on how the authorities intend to promote energy efficiency. Installing improved production line equipment is as might be expected. However, there is also a drive towards low-carbon fuel substitution such as an increased thermal substitution rate (TSR) through the use of alternative fuels (AF), promotion of renewable energy sources and, interestingly, no new cement plants will be able to add captive coal power plants. The government is targeting a TSR of 10% by the end of 2025 with 30% of lines using AF in some form or another. A plan to reduce the clinker factor in cement is also being pushed through for the increased use of blast furnace slag, fly ash, carbide slag, manganese slag and other supplementary cementitious materials. This last point might have big implications for the ferrous slag export market but that’s a story for another day.

Working out how much these new measures will affect the cement sector in China in the short term is not straightforward since it’s unclear what the country’s actual production capacity is and how much of it is actually active. Data from the National Bureau of Statistics of China showed that cement output was 2.02Bnt in 2023. The China Cement Association (CCA) estimated that the capacity utilisation rate was 59% in 2023. So, if the sector were using all of its integrated cement plants flat out, then one might crudely suppose that the national production capacity might be around 3.5Bnt/yr. This guess does not take into account the prevalence of blended cements and a whole host of other factors so should be treated with caution. Given that cement output fell by 5% year-on-year in 2023, output could be just over 1.8Bnt in 2025 if the rate of decline holds. Research by Reuters in April 2024, suggested that the capacity utilisation rate hit 50% in that month, suggesting that the sector could meet the target in 2024 if it’s a particularly bad year. So, provided the production cap is enacted along the same lines of peak-shifting, where plants are temporarily shut for periods, then the target looks well within reach.

As reported in April 2024, the Chinese cement sector has faced rationalisation in recent years as the real estate market collapsed. Output peaked in 2020 and then fell subsequently. Most of the big producers endured falling sales volumes, revenue and profit in 2022, although some managed to resist the continuing decline in 2023. One coping mechanism has been to focus on overseas markets as proposed by the government’s Belt and Road initiative. Huaxin Cement has been a particular proponent of this strategy. The CCA says that China-based companies have invested in and built 43 clinker production lines in 21 countries with a cement production capacity of 81Mt/yr. Another 43Mt/yr of capacity is currently being built outside of China with yet another 25Mt/yr of capacity proposed for construction.

It is interesting, then, to note that the CCA issued an official warning this week to its members to invest ‘cautiously’ in Uzbekistan. The association said in a statement that at the end of April 2024 the country had 46 integrated production lines with a cement production capacity of 38Mt/yr. This is double the country’s demand for cement. Half of this production capacity is managed by China-based companies. It added that the utilisation rate was currently 50%, that the price had dropped by about 40% since 2020 and that competition was ‘fierce.’ Incredibly, another 7Mt/yr of capacity is expected to be added in 2024. The CCA has advised Chinese companies to consider the state of the Uzbek cement market before making any more investments.

The two news stories we have explored this week cover two sides of the same issue: Chinese cement overcapacity. The local market is finally slowing down after a period of phenomenal growth and the big question is what is the actual market demand now that all the big stuff has already been built. The government gives every impression it is using the decline to meet its sustainability goals. Like institutions in many other places it has set itself targets that it seems likely to meet. The flipside of overcapacity at home is investment overseas. China-based plant equipment manufacturers have certainly done well out of this situation. Yet in Uzbekistan, at least, it looks like the cement sector in China has also managed to export its overcapacity. This has created the absurd situation where the CCA has implored its members and others to exercise the same self-discipline abroad that the government extols at home. Another way to put this might be that Chinese cement companies are increasingly unable to make money at home… or in Uzbekistan. This then leaves a query over where else enthusiastic Chinese cement investors may be causing market imbalances. One solution might be for the Chinese government to impose a cap on clinker production by its companies outside the mainland. Whatever happens next though, the introduction of a capacity cap in mainland China marks a decisive change to the local cement sector.

Netherlands: Paebbl has successfully mineralised its first tonne of CO₂ into raw materials for alternative building materials at its pilot facility in Rotterdam. The tonne of CO₂ corresponds to 3t of material produced. In a post to LinkedIn, the company said that it is now seeking ‘more brilliant, planet-aligned, resilient people’ to join its team of 30 people.

Paebbl said “We're moving fast, but our journey is barely a humbling 0.0000001% complete.”

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."

Germany: France-based Fives has won a contract to build a 50t/day clay calcination unit at Rohrdorfer’s Rohrdorf cement plant in Bavaria. The unit will integrate into the plant’s clinker line in order to allow it to test the production of limestone calcined clay cement with up to 40% reduced CO₂ emissions. Fives’ clay calcination unit uses a flash calcination process, based on a three-stage preheater, flash calciner and decolourisation system.

Rohrdorfer’s Net Zero Emissions Labs team is responsible for the project to decarbonise the Rohrdorf cement plant by 2038. Its managing director Helmut Leibinger said “After a detailed technical review, we decided that the flash calciner with an integrated clay calcination unit from Fives FCB was the best solution in terms of reliability, efficiency and colour control. We are confident that the unit will be essential in moving forward on our pathway to net zero.”

North America: The Wildlife Habitat Council (WHC) has recognised Cemex’s conservation efforts in Mexico and the US with awards for four of its projects. These included its restoration of desert habitats at Cerro Jardín, Xoyatla and Coayuca in Atotonilco, Mexico. Cemex said that all of the projects advance its Future in Action strategy of sustainable excellence through circularity, climate action and water and biodiversity management, in line with becoming a net zero company by 2050.

China: The National Development and Reform Commission, along with other government departments, has launched the Special Action Plan for Energy Conservation and CO₂ Reduction in the Cement Industry. The plan aims to cap clinker capacity at 1.8Bnt/yr by 2026, with 30% of it above the national energy efficiency benchmark level. This will reduce energy consumption per tonne by 3.7% from 2020 levels. The plan will eliminate 13Mt of CO₂ emissions and 5Mt of coal consumption in 2024 – 2025.

India: UltraTech Cement has conserved 105m³ of water in the 2024 financial year, achieving a status of five times water positive. The company's water management strategy includes the installation of rainwater harvesting systems and zero liquid discharge plants at several manufacturing units to enable 100% reuse of treated water.

New Zealand: Golden Bay, New Zealand's sole cement producer and a division of Fletcher Building, is advancing its sustainability goals at its Portland plant near Whangārei. The plant has been incorporating old tyres and treated timber in its production process since 2021, with the Ministry for Environment helping fund US$10m of the US$15.5m to upgrade the plant for the project. The plant uses tyres to replace 55-60% of the coal required, and plans to eliminate coal use by 2030. The facility has increased its use of recycled tyres from 15,000t to 30,000t/yr and is aiming for 40,000t/yr. The government’s Tyrewise programme supports tyre recycling, with the plant also investing in an on-site shredder. Upcoming projects include substituting coal with non-recyclable materials like old carpets and plastics, targeting a 30% reduction in emissions. Construction has already started on the project and it is expected to be completed by the end of 2024, according to the New Zealand Herald.

Manufacturing manager Kelly Stevens said, "We’re diverting 100,000t/yr of waste that would’ve gone to landfill.”

Indonesia: The Indonesian Cement Association (ASI) has forecast the volume of cement to be used in the construction of the upcoming new capital city, Nusantara, as 1Mt/yr. This corresponds to 1.5% of the current domestic demand of 65.6Mt/yr. The Jakarta Post newspaper has reported that ASI members plan to supply reduced-CO₂ cement for the Nusantara project, to help it realise its aims as a ‘green city.’

In 2022 – 2024, the construction of Nusantara is expected to use 1.94Mt of cement. Research from the Bandung Institute of Technology previously forecast in 2022 that the Nusantara project would raise Indonesia’s cement demand by 33% to 84Mt/yr for 20 years from the start of its construction.

Indonesia: The Ministry of Industry is preparing a comprehensive roadmap for decarbonising the cement industry, due for initial implementation by the end of 2025. Newsbase Daily News has reported that that the roadmap includes targets for CO₂ emissions reduction, alternative fuels substitution and energy efficiency. It will also focus on developing new technologies and implementing supportive policies for the transition. The ministry noted that the Indonesian cement industry is already working to reduce its carbon footprint through multiple initiatives.