Vertical lime kiln calcination temperature dropped because of what is the source?
Low fuel ratio or low fuel calorific value. The performance ratio of mixed kiln and kiln fuel, Tangshan Kimcheon Metallurgical new energy technology development Co Ltd design energy saving burning lime kiln type due to the introduction of advanced technology of kiln shape design of Japan and Germany is relatively scientific coal ratio is very low, each burned a ton of lime kiln type has some advanced exceed 125 kg, mixed with coal kiln General requirements calorific value of 5500 kcal or more. The grain size of the fuel must be controlled, and the water should be properly added with the final coal.
The size is too large, the speed depends on the size of limestone and limestone on the surface of lime contact temperature. However, at a certain temperature, the rate of limestone calcination depends on the particle size of limestone. Size is larger, slower calcination. Because the coefficient of thermal conductivity of lime is less than that of lime, the thickness of lime layer increases gradually. So there is often a large limestone limestone, quicklime is the first reason. Ordinary kiln size should be controlled in 40-80mm kiln as well, the large capacity can be relaxed to 50-150mm, in order to save the cost of limestone can also be specialized with a small stone, Tangshan Kimcheon Metallurgical new energy technology development Co Ltd in the design of gravel lime kiln burning pulverized coal special small diameter lime has also made gratifying achievements.
Lime production reaction process is a complex thermal decomposition of calcium carbonate formation of calcium oxide, due to different type of kiln, equipment configuration, the quality of raw materials and components of different types of fuel, and the calorific value is also different so in calcination will appear in a variety of problems and failures in analysis and processing method of the common problems and faults
For the wind is not reasonable, the kiln stone is calcined by the fuel combustion heating, and the fuel is rely on oxygen (air) combustion, the burning of any fuel must have three conditions including fuel, oxygen, fire and wind wind fire is indispensable, uniform fire uniform, except for a certain proportion of the amount of fuel is for the wind, rationality, in the kiln on the cross section of some local air some small wind, the wind place burning up the wind small place naturally burning. Tangshan Kimcheon Metallurgical new energy technology development Co. Ltd designed to pay special attention to the type of kiln for the design of air to make air supply reasonable, except in the height of some special research made in the kiln can be uniformly to the computer simulation of wind cowl for the wind, it can make the average wind pressure, both the amount of the drum at on the section of the whole kiln fuel in homogeneous combustion, the activity of the company in order to improve the productivity of lime kiln and lime production, a two-dimensional mathematical model was applied to simulate and study the results show that the lime kiln, lime kiln productivity and production activity of lime is low furnace gas flow distribution is not reasonable but due to unreasonable air distribution reflects the original shaft kiln computer simulation
