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  • company name:Zhengzhou Yufeng Heavy Machinery Co.,Ltd
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Active lime kiln and working principle of complete systems

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YL -type activity for the new lime kiln with preheater and vertical cooler vertical lime kiln , the company is introducing 
advanced foreign technology, developed on the basis of active lime calcining equipment with independent intellectual 
property rights. Nissan currently has a range of 600 to 1000 tons of products, and to achieve the export . Technical features: 
advanced structure , low loss of vertical preheater can effectively improve the preheating , lime kiln decomposition rate was 
preheated up to 20 to 25 percent , and the direct use of 10 ~ 50mm fine grade limestone . Reliable modular scale rotary kiln 
ends sealed air leakage coefficient is less than 10% , using compound firebrick lining to reduce radiative heat loss . Filling , 
ventilation can be round or square partition upright cooler , cooler temperatures resorted lime is 80 % plus ambient 
temperature, easy to transport , store , and the secondary air preheater kiln to more than 700 ℃, reducing the moving parts 
and special materials. Using active lime Steelmaking fast Dephosphorization can improve desulfurization efficiency ( about 
10% ) , you can shorten the refining time ( about 2 to 4 minutes / oven ) , saving lime and fluorspar consumption ( reduced 
by 10 to 40% ) , improve steel yield ( about 1.5 ) , reduce the charge consumption ( 5 to 8 kg / t ) , to extend the converter 
lining life ( over 20% ) ; ingredients active lime rotary kiln production stability, conducive to achieving the steelmaking 
process automatic control . I design and manufacture of active lime kiln system has been widely applied to many steel 
companies, and has been in the other areas of nonferrous metals, chemicals , desulfurization, calcium carbide , paper and 
other promotion. My company has the domestic first-class active lime kiln system development research and design team, 
perfect test and measurement instruments , sophisticated rotary kiln, preheater vertical , vertical cooler manufacturing 
equipment and manufacturing technology, has formed a perfect Complete active lime kiln technology systems , equipment 
design , manufacture, installation and commissioning services technology , production and service system. Working principle 
: YL active lime kiln process systems and air distribution systems into materials : raw materials logistics system (limestone ) in 
the feed bin by vibrating feeder , conveyor , conveyor upgrade to screening equipment and then by conveyor into vertical 
preheater , conducted in the vertical air preheater heat exchange material , 20 to 25% of the pre- decomposed materials , 
by putting the uniform material evenly push the kiln . By calcination kiln , to be finished into vertical active lime cooler , 
cooler by vertical feeder is discharged onto the lower conveyor scales , and through conveying, screening , lifting equipment 
into the finished product warehouse ; airflow system the secondary air by a blower into the vertical cooler , and a heat 
exchange material 650 ℃ for hot air into the rotary kiln through the kiln hood , the combustion in the rotary kiln 
participation from the preheater into the kiln , preheater from the vertical out of the exhaust gas through the high efficiency 
heat exchanger is used to preheat the primary air and reduce exhaust gas temperature , preheated primary air into the 
burner after the combustion in the rotary kiln . After cooling the exhaust gas through the precipitator , high temperature 
fans, through the chimney into the atmosphere.

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