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Pilot plant launched for process that makes lime sustainably from industrial waste

This article was originally posted on Chemical Engineering Online.
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Summary
CarbonBlue Ltd has launched a pilot plant for a process that produces lime (CaO) more sustainably by calcining materials sourced from industrial waste instead of quarried limestone, aiming to cut both fuel-related and process CO2 emissions. Since conventional lime making emits CO2 from high-temperature heating and from CaCO3 decomposition, this alternative route could lower emissions across cement, steel, and chemical supply chains if it scales.

What industrial waste streams near you could be viable feedstocks for low‑carbon lime, and what would be the biggest hurdles to deploying this at scale?

Calcining limestone (CaCO3) to produce lime (CaO) is a key industrial process for making cement, steel and chemicals, among other uses. Lime production is a target for CO2-abatement efforts because it generates a great deal of CO2 emissions, not only from fossil fuels burned to achieve the high heat required, but also because the reaction releases CO2 as a byproduct. A process now being piloted by CarbonBlue Ltd. offers an alternative route to producing lime via calcination.

The post Pilot plant launched for process that makes lime sustainably from industrial waste appeared first on Chemical Engineering.

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