Quicklime (Calcium Oxide) In the quicklime range of products, Carmeuse has high calcium quicklime and dolomitic quicklime products. The HIGH CALCIUM QUICKLIME is produced from limestone containing over 98% calcium carbonate.. DOLOMITIC QUICKLIME is produced from limestone containing a mixture of both calcium and magnesium carbonates.. Both high calcium quicklime and dolomitic quicklime are ...