The small equipment for burning lime by electricity is lime rotary kiln equipment.
Lime is calcined from materials with high calcium carbonate content in lime rotary kiln, most of which are white. It can be divided into quicklime and hydrated lime according to different components, and it has different development in many fields such as architecture, metallurgy and building materials. If lime is to be used more reasonably, it must be calcined first. The calcined lime has high hardness, stable chemical properties, high activity, corrosion resistance and so on. The equipment used to calcine it is lime rotary kiln.
Calcining lime is an important step in the lime production line, and it is also an important process of turning crushed limestone into clinker lime. In this process, lime rotary kiln equipment is usually used, which is developed according to the characteristics of limestone, and has the characteristics of good sealing effect, convenient control of calcination temperature and high activity of the obtained products.
working principle of vertical preheater in lime kiln
raw materials enter the flue gas material isolation cover from the feeding chamber and are evenly distributed in the annular stacking space between the two cylinders of the preheater body along the conical surface of the central distribution cone. The hot flue gas from the rotary kiln at 9 ~ 1℃ enters the whole section of the annular stacking space through the air inlet of the gas collecting chamber, passes through the material layer, and flows reversely in the feeding direction for full heat exchange.
the materials preheated to 6℃ are pushed into the kiln in turn with the help of each pusher discharger. So as to achieve the purpose of uniform feeding. After heat exchange, the flue gas whose temperature drops to about 3℃ is discharged into the atmosphere through the smoke exhauster of electrostatic precipitator. The vertical preheater consists of a feeding chamber, a main body, a push rod discharger, a bypass valve and an auxiliary chimney.