3 ms·
> The thing you are firing in the oven (limestone) releases CO2. I'm aware of that. There are two main sources of CO2 in cement manufacture: the calcium carbo
by blacksqr 5y ago
> The thing you are firing in the oven (limestone) releases CO2.
I'm aware of that. There are two main sources of CO2 in cement manufacture: the calcium carbonate raw material, and the fossil fuel required to cook the raw materials into clinker. Heimdal only deals with one. The questions I'm interested in are which source contributes more CO2 and which can be most economically eliminated.
> We need zero CO2.
Agree, but Heimdal won't get us there. We'll either have to find a replacement for cement, or devise a practical method to convert CO2 waste to something benign, like an improved Bosch process.