Rotary kiln VS rotary dryer What are the difference?
Superior productivity rotary drum dryer aka drying machine for sale 2024
A rotary dryer is also called a drum dryer, or drum dryer. This machine has strong adaptability to materials, can dry various materials, and the operation of the equipment is simple and reliable, so it is widely used. Rotary dryers are commonly used in building materials, metallurgy, the chemical industry, and the cement industry to dry slag, clay, and other materials. The rotary dryer mainly comprises a rotary body, a lifting plate, a rotating device, a supporting device, and a sealing ring. It has the characteristics of reasonable structure, excellent production, high output, low energy consumption and convenient operation.
What are the main performance and characteristics of optimal performance rotary dryer:
1. Efficient combination lifting plate:
According to the changes in the physical properties of the material during the drying process, a combination of lifting plates with multiple structures is used to form a uniform material curtain in the barrel, which can fully conduct heat and mass transfer with the hot flue gas. For high-humidity viscous materials , there will be a chain breaking device to prevent blocking materials and break accumulated balls. For materials with excellent fluidity, spoon-shaped arc plates are used. As a result, the evaporation intensity per unit volume reaches 40-80 kg/m3.h, and the evaporation intensity is 50-100% higher than that of traditional rotary dryers.
2. Automatic self-aligning roller device:
Using a different bearing model and structural form from the traditional dryer supporting wheel, the supporting wheel and the wheel belt are self-constrained to maintain line contact, and the friction surface contact is wider and more balanced, ensuring the service life of the supporting wheel and wheel belt, and enhancing the cylinder operation stability. And appropriately reduce the angle between the supporting wheels, reduce running resistance, and reduce power consumption.
3. Adjustable speed feature:
According to the different physical and chemical properties of the dried materials, the drying residence time is different. The design adopts the optimal speed operation to fully ensure the drying quality. Electromagnetic speed regulation or frequency conversion speed regulation can be used according to user requirements.
4. New dryer Dust collection hood cover design:
According to the requirements of different dry materials, the tail hood is designed with an expanded cavity, and the exhaust gas flow direction is changed, so that the tail hood can take on the primary dust collection function, which greatly reduces the dust collection pressure of subsequent dust collectors.
5. New dryer sealing device design:
The front and rear sealing rings of the rotary dryer draw lessons from the sealing device of the rotary kiln. They are composed of stainless steel fish scales, which are temperature-resistant and wear-resistant, have good sealing effect, long service life, and are easy to install and maintain.
What are the types and characteristics of superior quality cement rotary kiln:
- In the development process of the cement industry, different production methods and different types of rotary kilns have emerged. According to the method of raw material preparation, it can be divided into dry production and wet production. Rotary kilns that are suitable for the production method are divided into dry rotary kilns and wet rotary kiln.
- Wet process rotary kiln: The cement kiln used in wet process production is called wet process kiln. Wet process production is to make raw materials into a slurry with a water content of 32% to 40%. Since it is prepared into a fluid slurry, the raw materials are well mixed and the ingredients of the raw material are uniform, so that the quality of the fired clinker is high. This is the main advantage of wet production.
- Dry rotary kiln: The advantages and disadvantages of dry rotary kiln and wet rotary kiln are exactly opposite. The dry method is used to make raw meal into dry raw meal powder, and the moisture is generally less than 1%, so it reduces the heat required to evaporate water than the wet method.
- The metallurgical chemical kiln is mainly used for the magnetization roasting of lean iron ore in steel plants in the metallurgical industry; and the oxidation roasting of chromium and nickel iron ore. The refractory material plant roasts high-alumina vanadium ore and the aluminum plant roasts clinker and aluminum hydroxide. Chemical plants roast chromium ore and chromium ore powder and other similar minerals.
- Tongli Lime kiln is used for baking activated lime and light-burned dolomite used in steel plants and ferroalloy plants. In the building materials industry, in addition to calcining cement clinker, rotary kilns are also used to calcine clay, limestone and slag drying. In the production of refractory materials, rotary kilns are used to calcine raw materials to stabilize their dimensions and increase their strength. Processing and shaping. In non-ferrous and ferrous metallurgy, metals such as iron, aluminum, copper, zinc, tin, nickel, tungsten, chromium, files, etc. use rotary kilns as smelting equipment to sinter and roast ores, concentrates, intermediates, etc.
How does top-tier performance lime rotary kiln process material?
- During the mineral processing process, a rotary kiln is used to magnetize and roast the lean iron ore, so that the original weak magnetism of the ore is changed into a strong magnetism to facilitate magnetic separation. In the chemical industry, rotary kilns are used to produce soda, calcine phosphate fertilizer, barium sulfide, etc.
- The use of rotary kilns to produce phosphoric acid has the advantages of low energy consumption, less electricity, no need for sulfuric acid, and the ability to utilize medium and low-grade phosphate rock. In terms of environmental protection, developed countries in the world use cement kilns to incinerate hazardous wastes and garbage. This not only reduces the waste and makes it harmless, but also uses the waste as fuel, saves coal powder, and achieves resource utilization of waste.
Conclusion
The primary difference between a rotary dryer and a rotary kiln lies in their respective functions and operating principles. A rotary dryer is designed to remove moisture from materials through the application of heat, typically used in industries such as agriculture and mineral processing. On the other hand, a rotary kiln is used for thermal processing, such as calcination, sintering, and pyrolysis, transforming raw materials into more usable forms or products. While both utilize rotating drums, their purposes diverge in the way they facilitate material transformation. In conclusion, rotary dryers focus on moisture removal, while rotary kilns are geared towards thermal processing applications.
