Wed, 08 Dec 2021

HELSINKI, Oct. 12 (Xinhua) -- A method of producing cement that drastically reduces carbon dioxide emissions has been developed by the Technical Research Centre of Finland (VTT), it was announced on Tuesday.

VTT says its new method, which uses low-emission electricity instead of combustion, can bring carbon dioxide emissions in the production of cement and quicklime to nearly zero.

The process uses a gas-tight, electrically-heated kiln, and captures the carbon dioxide released during the production process.

As one of the ingredients in concrete, cement is the world's most commonly used construction material, and accounts for about seven percent of the world's carbon dioxide emissions.

"Reducing industrial emissions is of key importance in halting climate change and achieving the climate objectives of the Paris Agreement," said Krista Mikkonen, Minister of the Environment and Climate Change of Finland. "Research and development has an important role to play in promoting new solutions."

VTT's carbon reduction project involved constructing a 12-meter electrically-heated rotary kiln. According to VTT, the test kiln could also be used for reducing emissions in other industrial sectors, such as the battery and asphalt industries.

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