INTRODUCTION

Sand rotary dryer, also named as rotary sand dryer or sand dryer machine, is widely used in industries like building materials, metallurgy, food, chemical, coal, medicine and mining, etc. All customers want to purchase sand dryer machine with remarkable features of low energy consumption, high working efficiency and large profit space. The following content will center on the methods for improving the drying efficiency of sand rotary dryer.

Firstly, we should know about the structure and revolving speed of rotary sand dryer. For example, we can install lifting boards in sand dryer machine, which are capable to improve the contacting area between drying mediums and raw materials as well as the drying speed. Higher the temperature of drying medium, smaller the relative humidity of raw material. Faster the running speed of drying medium, shorter the drying time for raw material. The temperature, humidity and running speed of drying medium are easy to be influenced by the special properties of raw material and sand dryer machine itself. In addition, the structure of combustion chamber and quality of fuel would more or less influence the drying effect.

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