I'm really rooting for the Stanford University researchers working on this carbon removal method. They've found a way to ...

Calcium oxide is a cheap, chalky chemical compound commonly used in the manufacturing of cement, plaster, paper, and steel. But the material may soon have a more high-tech application. UChicago ...

The potential benefits are truly exciting. Automaker sparks intrigue with patent for groundbreaking tire composition — here's ...

Researchers in the United States find a low-cost method using rocks to trap carbon dioxide - one of biggest drivers of global warming ...

Often referred to as the "holy grail" of solar power, perovskite cells offer a lightweight alternative to traditional silicon ...

By firing rock dust in standard cement kilns, they altered the mineral's chemistry so that it quickly react with carbon ...

Cement production begins by converting limestone to calcium oxide in a kiln heated to about 1,400 degrees Celsius. The calcium oxide is then mixed with sand to produce a key ingredient in cement.

So, if we have calcium carbonate and we heat it, it breaks down to produce calcium oxide and carbon dioxide. Gethin: OK, I know you're poised with your pen and your flip chart. But, before that ...

The calcium oxide then reacts with silica (sand) impurities in the haematite, to produce slag – which is calcium silicate. This is separated from the iron and used to make road surfaces.