Direct Fired Rotary Kiln

We will introduce you wet rotary kiln processing and make some analysis. Generally wet rotary kiln body is slightly longer (length rate is 30-40). In order to increase heat transmission scale, we usually add chains at the kiln tail part to accelerate water evaporation. During wet rotary kiln production, we add water into raw material mill, and make it as slurry material with water content 30%-40%. After mixed completely, the standard slurry is sent into kiln for burning, after which it becomes clinker. The clinker out of kiln will be sent into cooling machine for cooling, and then sent to clinker store. Raw coal drying heat and coal powder burning heat will be used as heat source for clinker burning.

The features of wet rotary kiln are: as raw material being made into slurry mud, it is high adaptable to heterogeneous materials. If raw material is featured high heterogeneous, and processing is steady, the burned clinker is high quality and high strength grade. Besides, low dust during production is one of advantages. However, as wet type production needs evaporating 30%-40% water from slurry material, and it will use much amount of heat, energy consumption for this part takes account of half or one third of the total consumption. Compared to shaft kiln and dry rotary kiln, wet rotary kiln has a higher production cost. At present, it has been sifted out as obsolete kiln type in domestic.

Cement shaft kiln types and features:

At present, there are two types shaft kilns used in domestic: common shaft kiln and mechanical shaft kiln.

Common shaft kiln is manual work for feeding material and discharging materials. Mechanical shaft kiln is mechanical work and successive operation. So, its output and quality and efficiency is better than common shaft kiln. According to building material technology policy requirements, instead of common shaft kiln, many small cement production plants apply mechanical shaft kiln to cement production.