Post by sunflower on Dec 18, 2012 0:59:58 GMT -5
With the rapid development of the national economy, the demand for the limestone greatly increases. However, the original fuel for the production of the limestone also greatly increases. The price rising rate for the fuel for combusting the limestone is even higher. In the production cost of the limestone, the cost of the fuel accounts for 70% of the total production cost. Therefore, the production profits must be focused on the consumption of the fuel. However, there are many factors for the consumption of the fuel in the lime rotary kiln. The experts have summarized the following aspects based on the study and the practical experience.
First, the selection for the type of the rotary kiln is very important. Different structures of the type of the rotary kiln should be selected based on the different production and different fuel. The volume of the rotary kiln can be designed according to the demand of the production and the type of the fuels. The rotary kiln with large volume usually uses the straight type. The thermal efficiency of the small Kiln capacity curve furnace vase kiln type is higher than the thermal efficiency in the kiln body. The consumption of the coal is relatively low. In the gas kiln, the high calorific value gas kiln capacity should not be too large. Limited by the length of the flame and the range of the thermal conductivity, the consumption methods include the direct flame heating and reflection radiation heating. The rotary kiln should be designed according to the different features and different heating values of the air. The combustor has great relationship with the consumption of the air.
Second, the materials in the kiln have great relationship with the consumption of the fuel. The calcination of the limestone is to make the limestone calcium carbonate decompose to the calcium oxide after heating. In addition, the decomposition is started from the outer part to the inner part.
Third, the heat exhaustion of the fuels has great relationship with the material distribution. The material refers to the limestone and the fuel. The limestone with different particles should be well and reasonably distributed in the kiln.
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Wet magnetic separator : www.crusher-export.com/magnetic-separator.html
First, the selection for the type of the rotary kiln is very important. Different structures of the type of the rotary kiln should be selected based on the different production and different fuel. The volume of the rotary kiln can be designed according to the demand of the production and the type of the fuels. The rotary kiln with large volume usually uses the straight type. The thermal efficiency of the small Kiln capacity curve furnace vase kiln type is higher than the thermal efficiency in the kiln body. The consumption of the coal is relatively low. In the gas kiln, the high calorific value gas kiln capacity should not be too large. Limited by the length of the flame and the range of the thermal conductivity, the consumption methods include the direct flame heating and reflection radiation heating. The rotary kiln should be designed according to the different features and different heating values of the air. The combustor has great relationship with the consumption of the air.
Second, the materials in the kiln have great relationship with the consumption of the fuel. The calcination of the limestone is to make the limestone calcium carbonate decompose to the calcium oxide after heating. In addition, the decomposition is started from the outer part to the inner part.
Third, the heat exhaustion of the fuels has great relationship with the material distribution. The material refers to the limestone and the fuel. The limestone with different particles should be well and reasonably distributed in the kiln.
Ball mill : www.crusher-export.com/ball_mill.htm
Wet magnetic separator : www.crusher-export.com/magnetic-separator.html