Product Working Principle
(1) Structure: The drum dryer is composed of the following parts: 1. Drum body; 2. Front roller ring; 3. Rear roller ring; 4. Gear; 5. Stop roller; 6. Drag roller; 7. Small gear; 8. Discharge section; 9. Distributing plate; 10. Reducer; 11. Motor; 12. Hot air duct; 13. Infeed chute; 14. Furnace body, etc. Additionally, gas generators, combustion chambers, or matching hoists, belt conveyors, feeders, cyclone dust collectors, induced draft fans, etc. can be designed according to customer requirements.
(D) Drum Dryer Working Principle: The wet material to be dried is conveyed to the hopper by a belt conveyor or a bucket elevator. It is then fed into the charging end through the feeding pipeline by the hopper's feeding machine. The slope of the feeding pipeline must be greater than the natural angle of repose of the material to ensure smooth flow into the dryer. The dryer drum is a rotating drum slightly inclined from the horizontal line. The material is added from the higher end, while the heat carrier enters from the lower end, contacting the material in a countercurrent manner. There is also a situation where the heat carrier and material enter the drum simultaneously. As the drum rotates, the material moves under gravity to the lower end. During the forward movement of the wet material within the drum, it receives heat directly or indirectly from the heat carrier, leading to drying. The dried material is then discharged at the outlet end via a belt conveyor or a screw conveyor. Scrapers are mounted on the inner wall of the drum, which function to lift and scatter the material, increasing the contact surface with the airflow to enhance the drying rate and promote material movement. Heat carriers are typically hot air, flue gas, etc. After passing through the dryer, the gas is usually collected by a cyclone separator to remove the carried material. To further reduce the dust content in the exhaust gas, it should pass through a bag filter or a wet scrubber before being emitted.
Product Performance Features
High production capacity with continuous operation capability; simple structure with minimal failures, easy operation, and low maintenance costs; wide application range for drying powdery, granular, strip, and block materials; high operational flexibility allows for significant fluctuations in product output without affecting quality; easy to clean.
Product Application Range
Minerals: Fluorite powder, quartz sand, graphite, magnesium salts, garnet, barite, potassium sodium feldspar, mica powder, slag, bentonite, zinc slag, clay, titanium concentrate, coal slime, manganese ore, pyrite, limestone, river sand, anthracite, iron ore fines, etc.
Chemical Industry: Sulfuric acid anhydride, sodium sulfide, anfufen, urea, oxalic acid, potassium dichromate, nitric acid phosphate fertilizer, calcium magnesium phosphate fertilizer, compound fertilizer.
It: Corn husks, soybean meal, cassava residue, waste abrasives, matchsticks, wood chips, distiller's grains, feed, etc.
