400t/d mixed calcination lime shaft kiln

The kiln type is the single tube shaft kiln with simple structure, relative to other kiln type, its construction easy masonry. Mixing system using a special mixing system, so that the mixture of stone and fuel evenly, is conducive to the uniform calcination of lime. The fabric is made of rotary cloth, so that the arrangement of stone in the kiln is very uniform, the resistance of the kiln section is the same, the calcination is stable.
The wind supply system selection of high-pressure centrifugal fan plus computer probability simulation hood for the wind, so that the furnace air volume to achieve pressure, the amount of the furnace to burn more fully, evenly and effectively solve the lime "underburning, overburning" phenomenon, reach to energy-saving purposes, lime product quality and high activity, fully able to meet the calcium carbide, steel, sintering, light calcium carbonate and other industries use requirements. Out of the gray system selection disc-type ash machine and two sealed valve out of the gray machine combination of the way, lock the wind performance is ideal. Feeding, ingredients, for the wind, gas, unloading ash are completed by computer automation control. Equipment is simple, flexible operation, small footprint, investment relative to other kiln lower.
1. Kiln operation flexibility, from 60-110% of any regulation, can achieve stable production.
2. Applicable fuel for coke, anthracite and other bulk solid fuel.
3. Low heat consumption, heat utilization is reasonable, through the cooling of lime preheated after the second high-temperature air directly involved in combustion, so that the full use of calorific value, energy consumption of 140kgce / t lime.
4. Vertical kiln using micro-negative pressure operation (kiln top), so that the air distribution within the kiln uniform, is conducive to lime calcination.
5. Designed to prevent partial burn correction system. In addition to the normal supply of fuel combustion in the kiln, in the kiln body calcined belt evenly distributed a number of auxiliary combustion air duct, when the thermocouple to detect the low temperature (partial burning), open the corresponding position of the combustion air valve, direct In the calcination zone to supply enough oxygen, so that the calcined belt to achieve a balanced and stable, effectively overcome the occurrence of partial combustion phenomenon.
The calcination principle of the co-firing kiln is based on the uniform mixing of the solid fuel (coke or anthracite) with the qualified stone, into the kiln through the rotary cloth of the kiln, and the mixture is preheated by its own gravity belt, calcined zone, cooling zone, and finally fired into qualified finished lime. The calcined zone, the preheated mixture of coke or anthracite and kiln bottom of the cooling lime of the secondary air combustion heat, so that the calcination zone temperature reached 1100 ~ 1250 ℃, to complete the lime calcination. Due to the addition of auxiliary combustion air duct to ensure that each point temperature is very uniform, so it will ensure that the kiln body temperature uniformity.