The purpose of lime kiln, what is it used for?

The clinker produced by lime kiln also has new uses. Lime kiln is mainly short of quicklime, which can be used as desulfurizer. Iron and steel industry, calcium carbide industry, alumina industry, refractories and other industries are all big lime consumers, and these industries have developed rapidly in the past two years. The annual output is basically increasing by more than 20%. However, the main material (auxiliary material) lime they need has not increased correspondingly, which has caused the tension of lime, which has stimulated a large number of social lime kilns to be launched, and earth kilns have blossomed everywhere, causing serious pollution to the environment. In this case, the state and local governments have issued a series of policies and regulations to rectify the kiln, but it is difficult to achieve the expected results due to the stimulation of demand. Therefore, in order to control the pollution of earth kiln, it is necessary to implement modern new technology lime kiln to solve the demand problem. This not only protects the environment, but also produces lime with good quality and low cost. For enterprises adopting this new technology, the economic benefits will be significantly improved. This is the practical significance of popularizing the new technology of lime kiln.

Lime kiln is mainly composed of kiln body, feeding device, distributing device, combustion device, ash unloading device, electrical appliance, instrument control device and dust removal device. Different forms of lime kilns have different structural forms and calcination forms, and the process flow is basically the same, but the equipment value is very different. Of course, the use effect is definitely different.

The technological process is as follows: limestone and fuel are put into a lime kiln (if gas fuel is added through pipelines and burners), preheated, then decomposed at 850℃, calcined at 1200℃, cooled and taken 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.