Factors Affecting the Poor Calcination Effect of Environmental Protection Lime Kiln

The environmental protection lime kiln manufacturer will explain to you the factors that affect the poor calcination effect of the environmental protection lime kiln:

1、 The calcination speed of limestone depends on the particle size and the temperature at which the surface contacts. At a certain temperature, the calcination speed of limestone depends on the particle size. If the particle size is large, the calcination speed will be slow. Since the thermal conductivity of lime is smaller than that of lime plastering, the thickness of lime layer will gradually increase, and heat is difficult to enter the stone, which will slow down the calcination speed. Therefore, large limestone often has a interlayer, which is the reason why lime is burnt.

2、 Overburn

The quality of quicklime is generally divided into two parts. One is to see the content of calcium oxide and magnesium oxide, and the other is to see the burning speed of quicklime. Burning is to decompose part of limestone, and over burning is to calcine too much limestone to completely calcine it. Some quicklime has low activity, which is difficult to distinguish in later production.

The combustion temperature of ordinary limestone is between 1000 and 1200 ℃. When dealing with overburning, the first thing to consider is whether the fuel ratio is too large, adjust to a reasonable composition, fully consider the quality of coal and the adaptability of wind.

3、 Unreasonable air supply

The stone in the environmental protection lime kiln is calcined by fuel burning and heating, and the fuel is combusted by oxygen. The combustion of any fuel requires three conditions, including fuel and oxygen. One of these three types can not be ignited without fuel and oxygen. In addition, there is local strong or small wind on the furnace section, where the wind is strong, the burning is good. Therefore, there is a natural phenomenon of strong and weak wind. Therefore, the design of air supply is also important. In order to make the air supply reasonable, in addition to the air supply to a certain height, a probability cap can also be formed in the kiln for uniform air supply and uniform combustion on the cross section of the whole kiln.

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