While the calcium carbonate is the main product that will feed cement kilns, the solid silica can ... The gases can even be put to use, with hydrogen gas as a green fuel and oxy-fuel for ...

"First, it addresses the carbon emissions resulting from limestone's decomposition while providing clean hydrogen and oxygen to heat the cement kiln. Second, it enables onsite decarbonization ...

To make concrete, minerals need to be crushed and cooked in a kiln heated to temperatures above ... temperature was high enough to dehydrate the cement powder while not being so hot that it ...