Rotary kiln with cyclone preheater (with rotary kiln calciner same) as a base, the presence of chlorine and a base, in the production process and often prone to

clogging crust case refers to the kiln crusts preheater system or on the inner wall hung sticky material to form a solid layer from the loose cover, the cross-sectional

area is reduced, the flow of gas severe impact, the material adhering to the preheater cone, the material can not be unloaded preheater and form a plug. Crust with

relatively large impact on production blockage, severe damage to the kiln can not operate normally, yield and quality decline, increased heat loss and so on. Thus

crust and clogging is with cyclone preheater kiln with the band exploded outside the main drawback of the kiln. Crust and clogging the specific reasons for this

analysis: the raw meal as potassium and sodium compounds, the lowest melting point of the material easy to play, and their melting point is generally 800-900 ° C,

boiling point 1400 ° C or so. This means that they are liquid at 800-900 ° C produced in the vaporization boiling above 1400 ° C, which is generated in the preheater

base crust blockage lies. Alkali raw meal enters the kiln at 1400 ° C or so, part of the vaporized volatile out with the exhaust gases into the preheater, and raw

materials for full contact, when it reaches the freezing point temperature alkali compounds, it will solidify in the raw material powder On the surface, resorted to the

raw meal preheater kiln alkali content increases, raw material into the kiln under high temperature, freezing in the raw meal alkali and alkali original raw meal partly

evaporate, and then with the exhaust gas into the preheater, so that the formation and volatilization of alkali cycle. As time increases, more and more alkali into the

circulation process, this kiln preheater with a circulation between the inner loop. Loop result into increasing the alkali content kiln raw meal, raw meal into the kiln as

alkali content increased, the amount of alkali clinker kiln resorted to increase. By the volatile alkali raw meal into the preheater, except part of the re-solidified in the

raw material powder kiln, preheater and partly to escape into the dust collector, if the escape of dust collector base was again closed onwards, the raw material is

mixed into the feed preheater, the process to form the base of the outer loop. When entering the process amount of the base is equal to the discharge amount of

the base, the base amount of circulation, the amount of clinker and escape with the alkali base, between relatively stable when equilibrium is reached. In the case of

equilibrium, when the cycle is not, while levels preheater temperature control is normal, and does not easily cause clogging crust. The above article by Henan

YuFeng Heavy Machinery (http://www.yufchina.com) finishing release, reproduced, please indicate the source!