The article All-electric calcination could save billions of tons of CO2 first appeared in the online magazine BASIC thinking. With our newsletter UPDATE you can start the day well informed every morning.
The lime and cement industry is responsible for around eight percent of global CO2 emissions. Until now, it was considered difficult to decarbonize because greenhouse gases escape directly from the rock used. The East German start-up Litherm Technologies has now developed a fully electric calcination process that is intended to solve exactly this problem.
The cleantech company Litherm Technologies from Wernigerode wants to replace conventional lime kilns with fully electric fluidized bed calcination. With this approach, electricity heats the fine-grained raw material directly, eliminating the need for gas or coal.
The process CO2 that is unavoidable during production is produced in a highly concentrated form. It should then be recycled or stored directly in order to reduce further emissions. This CO2 capture is integrated into the heat recovery of the system.
All-electric calcination replaces classic ovens
According to the start-up, the process requires neither additional equipment nor extra energy expenditure. A corresponding pilot plant is already running on the premises Rock works in Elbingerode. The seed financing received in the amount of 6.5 million euros from March 2026 will now serve as the next step towards the first commercial demonstration plant.
Litherm Technologies was also included in Bill Gates’ fellowship program. Investors include the Canadian world market leader Graymont and the Swiss lime factory Netstal. The overarching goal of those involved is to scale the technology for large-scale industrial use. According to Graymont Vice President David Chamberlain, the combination of all-electric production and directly usable CO2 as a by-product is unique in this form.
Why the procedure is also financially worthwhile
Avoiding additional energy requirements for deposition supports the economic basis of the system. Felix Nelles, Managing Director of Litherm Technologies, explained:
Our technology addresses exactly the part of emissions that cannot be solved by simple electrification in the lime and cement industries. The fact that we can integrate carbon capture into the process without additional equipment and energy requirements is a central lever for economic efficiency.
Lime is an indispensable raw material for dozens of important industrial processes. The material is required, among other things, in steel production, water treatment and the construction industry. Decarbonization of this sector therefore has a major impact on entire downstream value chains. Until now, this chemical process was considered one of the most stubborn fossil processes because the CO2 escapes from the rock itself.
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As a Tech Industry expert, I believe that the potential for all-electric calcination to save billions of tons of CO2 is a significant development in the fight against climate change. Traditional calcination processes, which involve the heating of limestone or other materials at high temperatures, are known to be highly energy-intensive and carbon-emitting.
By transitioning to all-electric calcination, we can reduce the reliance on fossil fuels and significantly lower greenhouse gas emissions. This could have a major impact on industries such as cement production, which is a major contributor to global CO2 emissions.
Furthermore, the advancements in technology that enable all-electric calcination are a testament to the innovative solutions that the tech industry can provide in tackling climate change. It showcases the potential for sustainable and environmentally friendly alternatives to traditional industrial processes.
Overall, I am excited about the potential of all-electric calcination to revolutionize the way we approach CO2 emissions in industries and believe that it could play a crucial role in achieving our climate goals.
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