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Flash drying is one method of solid fluidization. The paste or filter cake material with high moisture content
and a mechanical dispersal force, entering the collector. By which, the powdery product is obtained.
Performance:
1. Flash drying: Desiccation for 1 to 5 seconds, resulting in even granularity.
2. High collection rate: ≥ 90%.
3. Direct or indirect heating: Hot air ranging from 90 to 600 degrees Celsius.
4. Energy consumption: 1,100 to 1,200 kcal/kgH2O. Water evaporation capacity per set ranging from 90 to 3200 kgH2O/h.
5. Applicable for filter cake and paste materials with an initial moisture content of ≤ 85% and a final moisture content of ≤0.5%.
6. Requires small floor space and minimal labor involvement.
Process:
The flash drying system comprises a heater, a feeder, a desiccation chamber, and a cyclone collector. The
moist material is fed into a spiral feeder that conveys it to the drying chamber. Rotating blades are
positioned at the bottom of the drying chamber to disperse the material inside effectively. Simultaneously,
the heated hot air rapidly dries out the dispersed material, transforming it into granules. The swirling hot
air carries these granules through a cone-shaped sieve that rebounds some of the larger ones onto the
rotating blades, while the remaining smaller grains enter the collector. Finally, an air blower expels the
exhaust.
Suitable material:
1. Chemicals: zinc, calcium, magnesium, manganese, cobalt carbonate; zirconium oxide; aluminum hydroxide; lead sulfate and zinc sulfate; fire retardant; superfine calcium carbonate; nano-zinc oxide; precipitated barium sulfate.
2. Environmental protection products: hyphae, biological mud, settled silt.
3. Non-metallic products: kaolin, activated clay, superfine silica.
4. Pesticides.
5. Medicine.
6. Pigments and dyes.
Specifications:
Application examples:- Gansu Jinchuan Nickel Oxide drying.
- Guangdong Lianjiang Kaolin drying and calcining.
- Indonesia Phenol phthalein blue dye drying.
- Jiangxi Zinc Oxide drying.
Pictures at application sites:
