Re:Launch HN: Heimdal (YC S21) – Carbon neutral cement
by froh on Tuesday August 03, 2021 @04:36AM
(#28046936)
yes that kilning is what bothers me, not for the co2 that is captured at sea, released in the kiln. that is then recaptured when curing, isn't it?
what bothers me is the 1400°C needed in the kiln. to my understanding the ratio of limestone-to-lime co2 to fuel-for-the-process co2 is 2:3. you need lots of co2 intensive energy for that kiln.
what bothers me is the 1400°C needed in the kiln. to my understanding the ratio of limestone-to-lime co2 to fuel-for-the-process co2 is 2:3. you need lots of co2 intensive energy for that kiln.