Quicklime purposes: a lot of lime and limestone used as building materials calcium oxide, is an important raw material in many industries. Limestone can be directly processed into stone and fired into quicklime. There quicklime and slaked lime. The main ingredient is quicklime CaO, generally sold in blocks of calcium oxide, pure white, pale gray or pale yellow containing impurities. Quicklime traits: appearance of white (or gray, brown and white), amorphous, absorb water and carbon dioxide in the air. Calcium oxide reacts with water to generate calcium hydroxide, calcium oxide purchase activity, and release heat. Soluble in acidic water, insoluble in alcohol. An inorganic basic goods department eclipse, country risk Regulation No. 95006. Lime and water chemical reaction occurs, then it will immediately heated to a high temperature over 100 ℃.