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Lignite dryer technology has developed to today , for several different production requirements, we can find several basic lignite dryer models , but the most suitable one can only have one. The ideal selection must be based on the user's own conditions. And material factors, some focus, a compromise, in order to find the most suitable lignite dryer model , and can save investment, reduce operating costs, ensure product quality, and obtain maximum economic benefits.
   The following are the general principles for the selection of lignite dryers . The ideal selection must be based on its own conditions, and sometimes compromises are necessary.
   1. Applicability lignite dryer ------- lignite dryer must first be applied to specific materials, to meet the basic requirements and the drying of materials, including material handling well (feed conveyor , fluidization, dispersion, heat transfer, discharge, etc., and can meet the basic requirements of processing volume, dehydration amount, product quality and so on.
   2. The drying rate of lignite dryer is high --- only in terms of drying rate, the material is highly dispersed in hot air during convection drying , the critical moisture content is low, the drying speed is fast, and the same convection drying and drying The dry method also has different critical moisture contents, and thus the drying rate is also different.
   3. Lignite dryer consumes low energy ------- Different drying methods have different energy consumption indexes. Generally , the thermal efficiency of conductive drying can reach 100% theoretically , and convection drying can only be about 70% .
   4. Lignite dryer saves investment ----- Lignite dryer drying device that performs the same function , sometimes its cost difference is very different, should choose the lower one.
   5. Lignite dryer operation cost is low --- equipment depreciation, energy consumption, labor costs, maintenance costs, spare parts costs , etc. should be as low as possible.
   6. Lignite dryer prefers a drying device with simple structure, sufficient supply of spare parts, high reliability and long service life.
   7. Lignite dryer meets environmental protection requirements, with good working conditions and high safety.
   8. Before the lignite dryer is selected , it is best to make the drying experiment of the material , and to understand the drying device ( excellent and shortcomings) that have been used in similar materials , which is often helpful for proper selection.
   9. Do not rely solely on the selection lignite dryer past experience, pay attention to absorb new technology, listen to expert advice.
   Zhengzhou Keheng Heavy Industry analyzed the selection principle of lignite dryer for users of lignite dryer. It is hoped that users of lignite dryer can choose lignite dryer according to their own actual conditions when selecting lignite dryer to play brown coal drying. The biggest function of the dryer creates maximum benefit.
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