| New dry process kiln is not only stand for the advance level technology of cement producing at present, but also is the main direction of cement industry continual development. But it is a big problem for developing new dry process kiln in China: high investment, low output, high cost and low effect. This is seriously counteracting the cement industry development.This article depend on the study of the combustibility and transfer hot technology, the deep study of optimize and complete set the core of new dry process - the kiln system construction, and through the producing test of some factories, search for the methods of increasing output in the condition of the main machines configuration essentially not change. Have mastered the relation among the calciner construction, combustibility efficiency and output. Have analysed and studied the inner rule of the new dry process kiln calcine, and the rule of the kiln air flow and distributing field in the stable phase reaction and transfer hot.This article according to the fact of two new dry process production lines rapidly increase the output in HUXIN Cement Co., through the hot and cold model test for the control temperature of calciner, the time of keep material, the calcine efficiency of material, amount of the coal powder and combustibility etc. reasons put up the systematic analysis and study. Primarily we get a set of 3000t/d and 6000t/d "Mix Type " new pre-calcine kiln systems of high technology, low investment and high output, and fill up the margin of single row preheater 3000t/d and double row preheaters 6000t/d new dry process clinker production line in China. Now the project of 3000t/d have got the National Development and Plan Committee proved. The authority number is National Development and Plan Committee Industry [2001] 1203. Huaxin Cement Co. is preparing the construction of the project.Through the whole model deep study and analysis of the preheater and calciner of the pre-calcine kiln production line in Huaxin. Aim at new dry process produce feature and put up the general study for the raw fuel, built the mathematic model among the system parameters, calculate the mathematic model, analyze the basic rule of practical producing process, carry through the two way studies of theory and practical results for the pre-calcine kiln system. Understand the condition of limiting the calciner capacity. Establish the theoretical foundation to get the high combustible coal, high combustibility efficiency and high CaCO3 calcine efficiency.Have studied the equipment capability and configurable rationality of the pre-calcine kiln system. Have dope out the output and potential output of the system scientifically, analysis and study the main reasons of limiting the increase output, therefore bring into play the system equipment potential capacity, further to get the general capability reach the best, to establish the advance pre-calcine kiln system indomestic and overseas cement industry. Exert the efficiency of the advance science, and supply the theoretical foundation of improving our national suspend preheat and pre-calcine technology. Establish configuration and process parameters of "Mix Type" pre-calcine kiln system.The main feature of the artic is use the method of engineering scientific study for the system equipment, put up the model test and general analysis and calculation of the practical produce system, and forecast study of the main economic and technological index of the whole system. The result will be modified by the data of practical produce feedback and information check up. This is important action for creating "Mix Type" pre-calcine kiln system of our national the intellective right in the basis of knowing and mastering the outer kiln calcine technology.The discussion also studied the coal combustibility feature in the calciner. Depend on the coal combustibility condition put up the system analysis and study for the coal lighting, combustibility dynamics feature, coal and CaCO3 act each other etc., and find the method and step...
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