Product Operation 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. Vane; 10. Reducer; 11. Motor; 12. Hot air duct; 13. Feed chute; 14. Furnace body, etc. Additionally, coal gas generators, combustion chambers, or auxiliary equipment such as hoists, belt conveyors, feeders, cyclone dust collectors, and induced draft fans can be designed according to customer requirements.
(II) Drum Dryer Working Principle: The wet material to be dried is transported to the hopper by a belt conveyor or a bucket elevator. It is then fed into the charging end through the feeding pipe of the hopper feeder. The slope of the feeding pipe 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 cylinder slightly inclined from the horizontal line. The material is added from the higher end, with the heat carrier entering from the lower end, flowing in reverse contact with the material. There is also a scenario where the heat carrier and material flow into the drum together. As the cylinder 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, allowing the material to dry. It is then discharged at the outlet end via a belt conveyor or screw conveyor. Scrapers are mounted on the inner wall of the drum, which function to lift and scatter the material, increasing the contact surface area with the airflow to enhance drying speed and promote material movement. The heat carriers are typically hot air, flue gas, etc. After passing through the dryer, the gas usually requires a cyclone separator to collect the material carried by the gas. 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 capabilities; simple structure with minimal breakdowns, easy operation, and low maintenance costs; wide applicability for drying powdery, granular, strip, and block materials; high operational flexibility allows for significant fluctuations in product output without compromising quality; easy to clean.
Product Application Range
Minerals: Fluorspar 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 anhydride, sulfide alkali, anfupin, urea, oxalic acid, potassium dichromate, phosphorus nitrate fertilizer, calcium magnesium phosphate fertilizer, compound fertilizer.
It: Corn bran, soybean meal, cassava pulp, waste abrasives, matchsticks, wood chips, distiller's grains, feed, etc.
