| Message: | Wet rotary kiln, as building material equipment, is widely used in metallurgy, chemical industry, building refractory material, environmental protection and other industries. The rotary kiln consist cylinder, supporting device, support device with retainer wheel, drive device, active kiln head, kiln end sealing device, coal injection pipe device and other components. Wet rotary kiln body shows a certain degree of tilt to horizontal level. The entire kiln body is supported by roller device. It also has retainer wheel device to control the kiln body in case it runs up and down. The drive system also has auxiliary drive that can make kiln body drive when major power is off and prevent kiln body bending and being out of shape besides major drive. Kiln head and kiln end sealing device uses advanced technology to ensure reliability of sealing.CharacteristicsRaw material is made into mud. So it can adapt to non-homogeneous material. Raw material composition is uniform and its process is stable. Firing clinker quality is high and clinker intensity level is high. During the process of grinding, dust is less and kiln end flying ash is less. But in the wet production, 30%-40% slurry of water is evaporated and huge heat is consumed. Energy consumption accounts for 1/2～1/3 of cement cost. Compared with vertical kiln and dry rotary kiln, it is very high. Our country has listed wet cement production as restricted because of high heat consumption, high energy consumption and high water consumption.Basic functionsWet rotary kiln should have the following basic functions in order to calcinate good cement clinker and reduce coal consumption.1. Inject pulverized coal to kiln with the dispersed shape and a certain speed. Try to strengthen coal and air mixing.2. Strengthen air disturbance and increase air diffusion speed in order to blow away Volatile gas membrane around pulverized coal particle and enlarge the contact of fixed carbon and secondary air.3. Add right amount of fresh air and......url:http://www.cncementmachinery.com |
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