This article isn't very clear on the fact that CO2 can be re-injected back into the cement later in the production stage. I work with a startup using direct air capture tech to capture ambient CO2, store it, and inject it back into cement production. This has a massive offset in the CO2 produced during the calcination stage.
There is also lots of work already underway on electrified calcination. Plenty of industries, such as carbon fiber production, already take advantage of electrified kilns in their production process. This tech just needs to be scaled up. As the article mentioned, cement manufacturing isn't exactly on the cutting edge of technology.
https://www.carbon-direct.com/insights/direct-air-capture-to...
There is also lots of work already underway on electrified calcination. Plenty of industries, such as carbon fiber production, already take advantage of electrified kilns in their production process. This tech just needs to be scaled up. As the article mentioned, cement manufacturing isn't exactly on the cutting edge of technology.