Sludge Rotary Dryer

Brief introduction of sludge dryer

A sludge dryer also called a rotary dryer, is a continuously working equipment to process a large number of sludge. 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 sludge dryer has a good drying effect for sludge, coal slime, municipal sludge, steel sludge, sewage sludge, chemical sludge, etc. It is widely used in metallurgy, building material, chemical, coal, mining industry, etc. Materials that are processed by a sludge dryer are easy to transport. Sludge dryer is 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.

Sludge dryer produced by us has been in operation worldwide. For example, Shanxi Datong coal industry group uses it to dry coal slime, client in Handan, Hebei uses it to dry steel sludge, Malaysia client uses it to dry sludge. Sludge dryers have been sold to many countries, such as Malaysia, India, the Philippines, South Africa, Brazil, etc. Now our drying equipment is running normally, clients speak highly of sludge dryer.

The sludge 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 sludge dryers to the State Patent Office and were well-known in the drying equipment industry.

Features of Zhengke sludge dryer

1. High drying efficiency, good drying effect. Sludge 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 sludge 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 sludge dryer could dry sludge, coal slime, gypsum, steel sludge, then reuse them. This improves resource utilization and reduces dust pollution. Due to the special design of mechanical structure and electricity control, the sludge dryer works at low power. Also, the sludge 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 sludge 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 sludge dryer is applicable for 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 sludge dryer could work normally in severe cold, high temperature, plateau, etc.

4. Simple installation. Sludge dryer could work directly on 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 sludge dryer

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

Working principle of sludge dryer

Sludge 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 sludge moves forward, it gets heat directly and indirectly from the heating medium. Thus, sludge 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 sludge 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 sludge rotary dryers in China. Our sludge 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.