3 ms·
Steel can also be made in a process using hydrogen instead of coke. I don't know any replacements for cement.
by adrianN 5y ago
Steel can also be made in a process using hydrogen instead of coke. I don't know any replacements for cement.
- msandford 5y agoThere are folks talking about using solar concentrators (like solar thermal plants) but without the steam turbine and electrical generation equipment to make cement. https://helioscsp.com/concentrated-solar-power-csp-and-industrial-processes/ https://helioscsp.com/concentrated-solar-power-csp-and-indus...
- kragen 5y agoThere are a number of replacements for (ordinary Portland) cement, such as slaked lime, Sorel cement, alkali-activated cement, geopolymer cement (sometimes classed as an alkali-activated cement, though the Geopolymer Institute disagrees), and so on. Most of these have lower, zero, or even negative net CO₂ emissions. https://res.mdpi.com/d_attachment/sustainability/sustainability-11-00537/article_deploy/sustainability-11-00537.pdf https://res.mdpi.com/d_attachment/sustainability/sustainabil... "Recent Progress in Green Cement Technology Utilizing Low-Carbon Emission Fuels and Raw Materials: A Review" is a CC-BY overview of seven of them from 02019.