active lime VSK with coolers

active lime VSK       Double-beam active lime Two-girder-type active lime kilns are fit for many kinds of fuel, waste less energy and have high activity. For simple structure and low cost ,they are widely used for iron and steel chemical industries to calcline high quality active lime, using blast furnace gas, coke oven gas and coal dust to raise lime quality and save energy. This type of kiln in the country’s major steel companies and chemical industries are widely used. Technical characteristics of double beam Production capacity: 100T/D to 600T/D. operation range is 70% to 100%. Take the 300t/d kiln as example. It can be regulated within 210T/D-300T/D range without influencing quality and consumption targets. Grain size: 30mm to 60mm, 40mm to 80mm size, range ratio is 1:2 Kinds of fuel: natural gas, oil, coal dust, coke oven gas, coal gas of low heat value(e.g pure blast furnace gas) and mixed fuel of all kinds of fuel(gas and gas, gas and liquid, gas and solid, liquid and solid and so on) Lime products: fine lime and high activity(reaching 360ml,4N HCL ten minutes). The ratio of lime under-firing and over-baking is 3%-6% Low heat wastage : they can make full use of heat energy. Fuel gas will be pre headed by primary air passing. Cooled lime is preheated as secondary air passes. Fuel is burned completely and fuel heat is utilized fully. Ratio of heat consumes is 800-900Kal/kg High work ratio: they can operate continuously for 48 to 50 weeks each year. Calcination way : use ours new technology ,theree-way pressure system to reduce lime raw burned rate and raise line activity. Structural characteristics and process description: the kind body rectangular or cylindrical, there are double-deck burner girders in the kiln body with periphery burners in the middle of the kiln body. Waste gas drawing-out girder is set on the kiln divided into five parts: materials storage zone , pre heated zone, calcining zone , posterior calcining zone , cooling zone the part between the waste gas drawing-out girder and the kiln crown is storage zone, used for storing adequate lime stone in order not to stop producing when the kiln crown feed device needs short-term maintenance. The part between the waste gas drawing-out device and the upper burning girder is the preheating zone to preheat line stone. The part between the upper burner girder and the lower girder is the calcining zone, where line stone is calcined into fine lime, its height can be regulated according to requirement of quality or lime stone physical property The part between the upper burner girder and lower gas drawing-out girder is the posterior calcining zone. The lime that was calcimined will gain the even and refine quality and raise the activity, when through this zone that has the high temperature and no pressure. The parts between the lower gas deawing-out girder and the lime output is cooling zone, cooling air enters the kiln from the bottom of the cooling zone, cools lime stone to 75C, then goesout of the kiln, heated secondary air comes into calcining zone to help burning. Tow-girder burning device is central part of the kiln. Some fuel(such as gas, liquid and solid) feed pipe are into the girder burner mixes fuel with the combustion air evenly. The quality and the area of burners on the level are the same. This makes the kiln section temperature distributed evenly to cut down raw –burner rate. In order to protect the burner girder to work at high temperature in the calcining zone, medium(water or heat oil) enters the burner girder sandwich and circulates to cool. Medium(water or heat oil) passes the cooler to reduce temperature and is circulated. Primary air preheated by waste air, passes the burner girder and enters the kiln , heat energy is made full use of. The kiln is equipped with alarm device to ensure the burner girder works safely when medium (water or heat oil) temperature rises above certain temperature. The auxiliary pump makes sure medium(water or heat oil) can keep circulating .            After-Sales Service 1)  Pre-sale service quick lime production equipment :Freely provide project designing, process designing, choosing suitable equipment for you. 2)  Medium-sales service: Accompany you to complete the acceptance of the equipment,draft the construction scheme and detailed process, and complete process of export crusher 3)  After-sales service: We sent engineer to the scene to guide installation, debugging and training operators.