Lime: lime product is an after calcination obtained. It is through the actual characteristics of the calcined general performance: it is a granular, with a certain size of lime powder processing, surface cleaning, loose texture, color white, light weight, small green heart, containing less heat, cooling cooling fast, the case Water reacted strongly, there is almost explosive reaction of light (soft) burnt lime. Lime: Limestone decomposition requires a lot of heat lime powder production line, and steel and relatively fast cooling rate. In this case, the steel smelting process, there will be a shortage of heat, we must continue to provide supplemental heat to keep the temperature. This will undoubtedly prolong the steel smelting time, reduce the slagging quality lime powder, but also increases the consumption of raw materials. To this end, with the development of smelting technology in the steel-making process, because of slagging agents made easy to use on the requirements, hence the emergence of the first calcined limestone, calcium carbonate, calcium oxide generated through pyrolysis, also It is known as lime.