A gray limestone to calcium oxide gas rigid inorganic cementitious material as a main component. Lime is a product with a high content of calcium carbonate limestone, dolomite, chalk, lime kiln shells Buy, calcination by 900 ~ 1100 ℃. Lime is the first human application of cementitious material. Lime: limestone itself there by raw materials, the impact and the sulfur content of the fuel itself calcination factor lime kiln, lime generated by the limestone itself will contain different levels of sulfur, phosphorus and other elements, to this end, lime itself sulfur, low phosphorus content is required. And its former limestone (raw material) and low parathion is also a low content of the fuel requirements.