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Closed Loop Iron Powder Treatment Dryer

Design basis
1. Material to be dried: metal powder
2. Solvent composition: acetone
3. Circulating gas: nitrogen
4. Oxygen content: about 1.5% (nitrogen purity 99.99%)
5. Product appearance: 200-500 mesh
6. Moisture content of products: ≤2%
7. Heating mode: explosion-proof electric heating tube, directly heating nitrogen
8. Atomization mode: centrifugal atomization
9. Collecting method: tower bottom, cyclone, cloth bag collection
10. Exhaust gas treatment: condensation tower condensation, solvent recovery
12. Acetone recovery: about 85%
13. Total system power - - 130KW
14. Maximum power of heater: 63KW

Equipment system composition

The equipment is mainly composed of drying tower, hot air circulation system, feed atomization system, condensation recovery system, heating system, pressure protection system, support system and electrical control system. 

 Closed loop iron powder treatment dryer

1. Tower body:
1.1 components: drying chamber, hot air volute, hot air distributor, cleaning door, vibrator, sight mirror, atomizer, lighting, temperature and pressure sensing device, etc.
1.2 good tightness of the system, the tower body should be able to withstand positive and negative pressure;
1.3 the fan's seal is reliable, and its seal structure shall be guaranteed to be used for more than three years;


2. Hot air circulation system:
2.1 components: cyclone dust collector, induced draft fan, blower and connection pipeline, temperature and pressure sensing device.


3. Feed atomization system:
3.1 components: mixing tank, feed pump, pressure regulator package, atomizer, valve, pipeline, etc.
3.2 technological process: after the slurry is evenly stirred, the slurry is pumped to the atomizer to atomize and form droplets for evaporation in the tower. (agitator tank, feed pump installation platform or tower top)
3.4. Feed mixing tank with frequency conversion speed regulating stirrer;


4. Alcohol condensation recovery system:
4.1 the equipment adopts cloth bag dust removal and alcohol condenser to ensure less solvent dust pollution and direct recycling;
4.2 equipment with refrigeration unit; (freezing temperature: -10℃)
4.3. The system is equipped with liquid level switch, automatic valve, etc.


5. Heating system :(the heating mode can be directly heated by electricity)
5.1. Electric heating can be used to directly heat the system under the premise of ensuring system safety;
5.2. It can realize automatic and accurate temperature control, with temperature control accuracy of ±1℃;


6. System pressure protection:
6.1. The system must be equipped with pressure relief functions in automatic, manual, mechanical and other ways;
6.2. The system is equipped with multi-level safety protection, and its automatic pressure relief meets the process requirements, and the pressure parameters can be modified;
6.3. The system has the functions of positive pressure protection and negative pressure protection;

1.Product moisture content is too high
Exhaust air temperature is the main factor affecting the moisture content of finished products, so the reason for the high moisture content of products is generally the exhaust air temperature is too low. And the exhaust air temperature can be adjusted by the amount of feed. Therefore, the corresponding measures are appropriate to reduce the amount of feed, in order to improve the exhaust temperat...more
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