The technological process is as follows: limestone and fuel are put into a lime kiln (such as gas fuel is fed through pipelines and burners), preheated to 850 degrees for decomposition, calcined to 1200 degrees, and cooled out of the kiln. That is, the production of quicklime products is completed. Different kiln types have different ways of preheating, calcining, cooling and ash discharge. But several technological principles are the same: high-quality raw materials, high-quality lime; Fuel has high calorific value and low consumption; The particle size of limestone is proportional to the calcination time; The activity of quicklime is inversely proportional to calcination time and calcination temperature.