Gypsum Rotary Dryer

Brief introduction of rotary dryer

A rotary dryer, also called a horizontal dryer, is continuously working equipment to process a large number of materials. Moisture content after drying could reach 10% below (moisture content is adjustable by the control system). Due to the reliable performance, high operation flexibility, wide application, high handling capacity, the rotary dryer has a good drying effect for mineral materials, chemical materials, biomass, such as coal slime, lignite, gypsum, mineral powder, sludge, fly ash, iron powder, fluorite powder, mill scale, sand, wood chips, sawdust, chicken manure, grain, fertilizer, palm fiber residue, etc. It is widely used in metallurgy, building material, food, grain, chemical, coal, medicine, mining industry, etc. Materials that are processed by a rotary dryer are easy to transport. A rotary dryer is an energy-saving and environment-protecting equipment that not only improves the utilization of waste, reduces environmental pollution, but also creates a good economic benefit and social benefit.

The rotary dryer produced by us has been in operation worldwide. For example, Shandong Laiwu Steel Work use it to dry mill scale, Shanxi Datong coal industry group use it to dry coal slime, Oman Sohar Steel Work use it to dry iron power, American Michigan Technological University uses it to dry wood chips, Australia Coal Mining LLC use it to dry raw coal. Rotary dryers have been sold to many countries, such as Australia, America, Oman, Malaysia, India, Philippines, South Africa, Brazil, Chile, etc. Now our drying equipment is running normally, clients speak highly of rotary dryer.

The rotary dryer manufactured by Zhengke has passed the inspection of Henan Quality Supervision Bureau, ISO9001 international quality management system certification, Europe CE certificate standard, Russian GOST certificate, etc. Meanwhile, we had applied many patents of the rotary dryers to the State Patent Office and were well-known in the drying equipment industry.

Features of Zhengke Rotary dryer

1. High drying efficiency, good drying effect. Rotary dryer is continuously working drying equipment, used “feeding at one end and discharging at the other” method for drying materials. Due to the high moisture content, high stickiness of sludge, coal slime, gypsum, we make some special designs on the inside structure of the rotary dryer to improve drying efficiency. We could control and adjust the final moisture content to the client's request.

2. Energy-saving, environment-protecting, no pollution, no noise. Zhengke rotary dryer could dry coal slime, sludge, gypsum, mineral powder, sawdust, chicken manure, then reuse them. This improves resource utilization and reduces dust pollution. Due to the special design of mechanical structure and electricity control, the rotary dryer works at low power. Also, the rotary dryer is equipped with multistage dust collecting equipment to meet the national standard of environment protection. Reduce the environmental pollution from equipment; it is a kind of good energy conservation and environmental protection equipment. Our rotary dryer adopts an enclosed structure, no air pollution, and noise pollution will happen during the drying process.

3. Wide application range, low request for the working environment. Zhengke rotary dryer is applicable or every country in the world. We could make some adjustments according to the different situations in different countries, such as voltage, engineering design requirement, geographical conditions, etc. As to the working environment, Zhengke rotary dryer could work normally in severe cold, high temperature, plateau, etc.

4. Simple installation. The rotary dryer could work directly on a horizontal hardened site. In the running, no vibration happens. It is also convenient to transfer and transport the equipment.

5. Few workers, simple operation, easy maintenance. To client request, Zhengke could provide semi-automation and a total automation production line. Only regular maintenance to the instruction is needed. It is very convenient to maintain.

6. High safety. The transmission parts all adopt enclosed or semi-enclosed design to the equipment standard of security, such as transmission shaft, motor, belt pulley, etc. This ensures the safety of equipment and workers.

Technical parameter of Rotary dryer

Note：The above technical parameters are for reference, can be separately designed according to the customer’s actual situation.

Working principle of Rotary dryer

The rotary dryer is placed at an inclination of 3-5°. Sludge is sent to the inlet by feeding device, then spiral feeders push materials into the drum from feeding end to discharge end. Hot air will be drawn into the drum by a draft fan and exchange heat with materials constantly. As the drum rotates, materials are lifted and scattered by lifting boards repeatedly under gravity and move toward the lower end. As materials move forward, they get heat directly and indirectly from the heating medium. Thus, the material gets dried and discharged at the outlet. On the inner of the cylinder, lifting boards are equipped to lift materials and scatter them. This would spread the contact surface to improve the drying rate and promote materials to move forward. On the feeding end, a movable grate could break big lumps to increase the heating area, shorten drying time, and improve drying efficiency. On the inner wall of the drum, a movable steel chain would beat the drum repeatedly to prevent sticky material stick on the wall. The heating medium could be hot air, flue gas, etc. Usually, a cyclone collector would collect the dust that the heating medium entrains. If you want to reduce dust content further, a baghouse or wet scrubber may be needed.

The main structure and process flow chart of the rotary dryer

1、Furnace；1-1、Gas Stove；2、Materials；3、Feeding Conveyor；4、Inlet；5、Feeding Cover；6、Roller Ring；7、Carrier Roller；8、Drum；9、Transmission；10、Gear Ring；11、Roller Ring；12、Carrier Roller；13、Discharge Cover；14、Dust Collector；15、Chimney；16、Induced Draft Fan；17、Motor；18、Outlet；19、Discharging Conveyor

Kehua Industrial is one of the leading manufacturers and suppliers of high-quality and high-safety gypsum rotary dryers in China. Our gypsum rotary dryer products are sold at a cheap price, and our factory has many products in stock. Welcome to buy energy-saving, eco-friendly, and discount equipment with us and check the quotation with us.