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2012年（136）
分类： Mysql/postgreSQL
2012-02-24 08:49:10
It is the key equipment to dry different materials with humidity or granularity in various fields. According to its shape, it is also called drum-shaped dryer. Stainless steel is made of both 304 stainless steel and Q235 carbon steel. All the parts that have contact with materials are made of stainless steel to prevent it from corrosion. It is used for drying materials with humidity or granularity in the industries of mineral dressing, building material, metallurgy and chemical. Rotating dryers can be used for drying many kinds of materials and with convenient and reliable operation; therefore, it has been widely used
Advantage:
1. Reasonable structure, corrosion-proof;
2. High efficiency, low energy consumption;
3. Convenient for transportation;
4. Convenient and reliable operation;
Application:
Rotary dryer can dry many kinds of materials which contain moisture, not to say ordinary materials such as coal, coal slurry, slag, industrial waste, and clay stone. It could also dry those materials that could not have contact with iron or corrosive, such as silica sand, glass product materials, chicken manure, cow manure, poultry dung, etc.
Indirect heat transfer:
It is used for drying materials with humidity or granularity in the industries of mineral dressing, building material, metallurgy and chemical. Rotating dryer can be used for drying many kinds of materials and with convenient and reliable operation; therefore, it has been widely used.
Working principle:
Material to be dried enters the dryer, and as the dryer rotates, the material is lifted up by a series of internal fins lining the inner wall of the dryer. When the material gets high enough to roll back off the fins, it falls back down to the bottom of the dryer, passing through the hot gas stream as it falls. This gas stream can either be moving toward the discharge end from the feed end (known as co-current flow), or toward the feed end from the discharge end (known as counter-current flow). The gas stream can be made up of a mixture of air and combustion gases from a burner, in which case the dryer is called a direct heated dryer. Alternatively, the gas stream may consist of air or another (sometimes inert) gas that is preheated. The gas stream is preheated by some means where burner combustion gases do not enter the dryer. Often, indirect heated dryers are used when product contamination is a concern. Other crushing and grinding machines such as and professional manufactured by Hongxing Machinery can also satisfy different demands of different customers
