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　　Closed cycle spray drying device is a special equipment for drying of organic solvent. The unit use nitrogen (or other inert gas) as the dry-cycle gas, the material can prevent oxidation during drying process and the organic solvent can be recycled at the same time. The device is generally used as the powder drying for the organic solvent slurry of ethanol, acetone, hexane . the equipment The device is explosion proof and the drying process is safety and environmental protection.
1) closed cycle spray drying device - pressure type spray
The equipment is suitable for the drying process which need prevent oxidation, the powder has the liquidity requirements for the later press moulding. Such as ceramic, hard alloy powder. The average particle size can reach 50-150μm by pressure spray, and the powder is observed to be spherical, the flow property and the loose loading ratio are good through the Microscope. It could meet the continuous latter production. The whole drying process is completed under the protection of nitrogen, and organic solvents can be recovered at the same time.
2) closed cycle spray drying device - Centrifugal Spray
The equipment is suitable for drying process which need prevent oxidation, and the consistency of powder is high. Such as medicine, chemical, food, lithium powder and other industries. The average particle size can reach 10-100μm. was obtained by centrifugal spray. The whole drying process is completed under the protection of nitrogen, and organic solvents can be recovered at the same time.