Precipitated Calcium Carbonate from Limestone Chemical ...
Jun 01, 2016· Initially, the limestone from a quarry is stored in bins. Typical extracted limestone contains about 75 wt.% of CaCO3. Mined limestone is crushed in a jaw crusher and calcined (burned) in a verticalshaft lime kiln at about 1,000°C. In the kiln, the calcium carbonate present in the limestone decomposes into calcium oxide (CaO;.