Basic Info.
Object
Limestone,Gypsum,Sand,Bentonitesilica,Ore,
Certification
ISO9001:2000, CE
After-sales Service
One Year
Application
Ore,Mineral Dressing,Building Material,Metallurgy,
Operation Training
Provided
Product Name
Rotary Dryer
Machine Type
Rotary Drying Equipment
Heat Source
Coal, Oil, Natural Gas, Timber
Installation and Adjustment
Provide
Local Service Location
Everywhere
Specification
customizable
Product Description
Sand/Slag Rotary Drum Dryer to Reduce Moisture with Rotary Dryer
working principle
The drum of the drum dryer is a slightly inclined and rotatable cylinder. The wet material enters from the upper part of one end, and the dry material is collected from the lower part of the other end. Hot air enters from the feed end or the discharge end, and is discharged from the upper part of the other end. The cylinder is equipped with a forward copying board, so that the material is continuously picked up and sprinkled during the rotation of the cylinder, so that it is fully in contact with the hot air flow, so as to improve the drying efficiency and move the material forward. The heat source of drying materials is generally hot air, high-temperature flue gas, water vapor, etc.
The working process of the drum dryer is: the material liquid that needs to be dried flows into the receiving tank of the drum dryer from the high tank, and the material is attached to the surface of the drum thinly (film-like) by the film cloth device, and the drum is supplied with heat. As the medium, the food industry mostly uses steam, the pressure is generally 0.2~6MPa, the temperature is between 120~150ºC, the material is vaporized by the heat transfer from the wall during the rotation of the drum, and the film is completed in one rotation cycle. , Vaporization, dehydration and other processes, the dried material is scraped off by a scraper, conveyed to the finished product storage tank by a screw, and finally crushed or directly packaged. The water evaporated during heat transfer can be introduced into the corresponding treatment device through a closed cover according to its nature to collect dust or discharge.
Precautions
The dryer has large processing capacity, low fuel consumption and low drying cost. The dryer has the characteristics of high temperature resistance and can use high temperature hot air to quickly dry the materials. The scalability is strong, and the design considers the production margin, even if the output increases slightly, there is no need to replace the equipment. The equipment adopts the self-aligning tug structure, the tug and the rolling ring cooperate well, which greatly reduces the wear and power consumption. The specially designed retaining wheel structure greatly reduces the horizontal thrust caused by the tilting of the equipment. Strong anti-overload ability, stable operation of the cylinder and high reliability.
The moisture evaporation capacity of the drum dryer is generally 30-80kg/m3·h; it increases with the increase of the hot air temperature and changes with the moisture properties of the material. It has higher evaporation intensity than flash drying and spray drying. The thermal efficiency is generally 40%-70%. It has the following characteristics: high thermal efficiency
Since the dryer is heat conductive, the heat transfer direction is basically the same throughout the heat transfer cycle, so most of the heat supplied in the drum is used for the vaporization of the moisture of the material, and the thermal efficiency is 80% to 90%. High drying rate
The heat and mass transfer process of the wet material film on the cylinder wall is from the inside to the outside, the direction is the same, and the temperature gradient is large, so that the surface of the material film maintains a high evaporation intensity, generally up to 30~70 kg/(m2.h) ).
Stable drying quality
Because the heating method is easy to control, the temperature in the cylinder and the heat transfer rate of the partition wall can be kept relatively stable, so that the material film is dried under the heat transfer state, and the quality of the product can be guaranteed. However, the drum dryer also has its shortcomings, mainly: due to the high humidity of the surface of the drum, some products will be overheated and will damage the flavor or show abnormal colors. In addition, if a vacuum dryer is used, the cost is relatively high, and it is only suitable for the treatment of materials with very high heat sensitivity.
Rotary dryer, also named as rotary drum dryer and rotary drying machine, is energy-saving and high efficient drying equipment. Rotary dryer is widely used for drying materials in industries like cement, mine, building materials, chemistry, food and fertilizer, etc..
Such as: limestone, river sand, clay, iron oxide scale, sludge, coke, copper concentrate, silicon carbide powder, rare earth ore, mineral powder, tin ore powder, Cobalt ore powder, nickel ore powder, manganese ore powder, gypsum powder, bentonite, kaolin, gold ore powder, iron ore powder, steel slag, fluorite ore, coal, etc.
This rotary drying machine comes with thermocouples on the feeding and discharging device to control the temperature.
Capacity: 1-50tones per hour per set
Heating Fuel: Coal, Gas, Oil, Biomass fuels, Wood, etc.ClassificationAccording to the number of drums, it can be divided into single drum, double drum and multi drum dryer; according to the operating pressure, it can be divided into two types: atmospheric pressure and vacuum; according to the form of cloth film, it can be divided into top feeding, immersion and spraying. Type dryer, etc.
Single drum dryer
Single drum dryer refers to a machine in which the dryer completes the drying operation by one drum, and its composition is as described above. The important part of the dryer is the drum. The drum is a hollow metal cylinder. The drum body is welded with cast iron or steel plate. The drum used for food production is generally welded with stainless steel plate.
The diameter of the roller is in the range of 0.6~1.6m, and the ratio of length to diameter (L/D)=0.8~2.
Depending on the physical properties of the material, the cloth form can be fed at the top or immersed or sprayed. The thickness of the material film attached to the drum is 0.5~1.5mm.
Most of the heating medium is steam, the pressure of the steam is 200~600kPa, and the temperature of the outer wall of the drum is 120~150ºC.
The transmission mechanism that drives the drum to run is a stepless speed regulation mechanism, and the rotation speed of the drum is generally 4~10r/min.
After the material is dried, it is scraped from the drum by the scraping device. The position of the scraper depends on the inlet position of the material. Generally, it is in the third and fourth quadrants of the drum section and the angle of intersection with the horizontal axis is within the range of 30°~45°. The inlet and outlet of the heating medium in the drum are sealed with PTFE seals. The condensed water in the drum adopts a siphon and uses the pressure difference between the drum steam pressure and the trap to continuously discharge it out of the drum.
Double drum dryer
Double drum dryer refers to a machine in which two drums complete the drying operation at the same time. The two drums of the dryer are connected by a pair of gears with the same modulus and number of teeth through the same set of reduction gears, so that two groups of the same diameter Operated by relative rotation of the rollers. The double drum dryer can be divided into two types: the opposite roll type and the same trough type according to the position of the cloth.
For the roll-type double-drum dryer, the material liquid is stored in the groove area in the middle of the two drums, and weir plates are arranged around it. The gap between the two cylinders is controlled by a pair of meshing wheels whose pitch circle diameter is the same or similar to the outside diameter of the cylinder, generally in the range of 0.5~lmm, and no leakage of material is allowed. The direction of rotation of the roller can be determined according to the actual material and the requirements of the device layout. When the bite angle is at the end of the material liquid when the drum rotates, the thickness of the material film is controlled by the gap between the two cylinders. If the bite angle is in the reverse direction, the thickness of the material film between the two cylinders is controlled by the gap between the weir plate and the cylinder set in the length direction of the cylinder. This type of dryer is suitable for drying slurry materials with precipitation or materials with high viscosity.
Same trough type double drum dryer. The gap between the two sets of rollers is relatively large, and the diameter of the pitch circle of the relatively meshing gears is larger than the outer diameter of the cylinder. When feeding, the two cylinders are immersed in the liquid cloth film in the same trough and rotate relative to each other without interfering with each other. It is suitable for drying materials such as solution and emulsion.
The diameter of the drum of the double drum dryer is generally 0.5~2m; the length-to-diameter ratio (L/D)=1.5~2. The operating conditions such as speed and steam pressure in the drum are the same as the design of a single drum dryer, but the transmission power is about twice that of a single drum. The feeding method of the double-drum dryer is different from that of the single-drum dryer. If the material is fed from the upper side, the two-drum dryer with the thickness of the material film controlled by the weir can be installed in the middle of the bottom of the dryer. Screw conveyor machine, centralized discharging. The opposite-roll double-drum dryer with lower feed has separate discharging devices on the sides of the two groups of drums.
Vacuum drum dryer
The vacuum drum dryer is to completely seal the drum in the vacuum chamber, and the discharging method adopts the form of storage hopper material seal to discharge materials. The drum dryer can greatly improve the heat transfer coefficient in a vacuum state. For example, when the temperature in the drum is 121°C (0.2MPa vapor pressure) and the vacuum condition is 870kPa, the heat transfer coefficient is 2~ under normal pressure operation. 2.5 times. However, due to the complicated structure of the vacuum drum dryer and the high drying cost, it is generally only used for drying very heat-sensitive materials such as juice, yeast, and baby food.FeaturesThe operation is continuous, and uniform dried products can be obtained; the drum dryer has a short drying time when drying materials, generally about 7-30s, and the dried products are not at high temperature. It is suitable for drying heat-sensitive materials, but the wall may also be overheated. ; No matter the viscosity of the dried material slurry is high or low, it can be dried; the thermal efficiency is high; because there is no residual product in the dryer, a small amount of material can also be dried; the drum dryer has a wide range of operating parameters and is easy to adjust; The inside of the drum dryer is easy to clean and change the purpose; the exhaust gas does not take away materials, so there is no need to use dust removal equipment and other dryer accessories. Drum dryers are widely used for drying slurry materials, such as dry yeast, antibiotics, lactose, starch slurry, sodium nitrite, dyes, calcium carbonate and distillation waste liquid, etc. can all be dried.Model | Shell diameter (mm) | Shell length (mm) | Slope(°) | Rotary speed(r/m) | Weight(t) | Power (KW) | Volume (m3) |
Φ0.6×8 | 600 | 8000 | 3-5 | 8 | 5.1 | 5.5 | 2.26 |
Φ0.8×10 | 800 | 10000 | 3-5 | 7.2 | 6.9 | 5.5 | 5.02 |
Φ1.0×10 | 1000 | 10000 | 3-5 | 6.73 | 7.5 | 7.5 | 7.85 |
Φ1.2×12 | 1200 | 12000 | 3-5 | 5.8 | 13.1 | 11 | 13.3 |
Φ1.5×12 | 1500 | 12000 | 3-5 | 5.4 | 19 | 18.5 | 21.2 |
Φ1.8×12 | 1800 | 12000 | 3-5 | 5 | 25 | 18.5 | 30.52 |
Φ2.2×16 | 2200 | 16000 | 3-5 | 3.2 | 41 | 30 | 60.8 |
Φ2.4×18 | 2400 | 18000 | 3-5 | 3 | 51 | 30 | 81.43 |
Φ2.8×24 | 2800 | 24000 | 3-5 | 2-5 | 97 | 75 | 147.8 |
Φ3.0×26 | 3000 | 26000 | 3-5 | 2-5 | 110 | 90 | 183.7 |
Structure:
The rotary dryer is mainly composed of a frame, a heat supply source, a loading machine, a feeding machine, a rotary drum, a material crushing device, a discharging machine, an induced draft fan, a discharger, and a power distribution cabinet. Widely used in sand and gravel yards, mining, coal mining, concrete mixing plants, dry mortar, power plant desulfurization, refractory materials, building materials, and other industries. The equipment is simple and reliable to operate, so it is widely used.Rotary Drying production line was installed in Russia in 2017
Capacity: 15 t/h Raw material: sand, sludge
Main Equipment: Vibrating Feeder, Jaw Crusher, Impact Crusher, Vibrating Screen, Belt Conveyor.
Rotary Drying Plant in PhilippinesFAQ:
1.How to choose dryer equipment?
A: At first, please inform us what kind of material you need to dry.
Second, you should inform us how much output you need per hour.
Third, what kind of heat source you have(Electric heating/oil furnace/gas furnace/coal furnace/stream)
Finally, we need to know the moisture before drying and after drying.
2.Can you provide plant layout?
A: Yes, we can provide.https://zoneding.en.made-in-china.com/product-list-1.html
Address:
6# Xueyuan Road, Mazhai Industrial Zone, Erqi District, Zhengzhou, Henan, China
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components, Manufacturing & Processing Machinery
Company Introduction:
Zhengzhou Zhongding Heavy Machinery Manufacturing Co., Ltd. is a joint-stock enterprise specializing in the production of mining machinery. Is a professional beneficiation, crushing, screening, drying equipment solution provider, long-term commitment to provide crushing equipment, vibration screening equipment, washing equipment and belt conveyor equipment for the grinding and mineral processing and sand aggregate industries. Durable equipment and production line technology. Zhongding Machinery has always adhered to the path of globalization, and while continuously expanding its domestic market share, it has successively exported to more than 130 countries and regions such as Europe, Africa, Central Asia, Southeast Asia, South America, North America, Russia, Australia, etc., always with customers Maintain close strategic cooperation and always provide customers with high-quality products and professional services.
The company is located in Mazhai Industrial Machinery Industrial Park, Zhengzhou City, Henan Province. It has independent development, processing and manufacturing capabilities, as well as an independent R& D center and production base. More than 20 years of experience in machinery R& D and production, professional technology and service teams have provided inexhaustible impetus for Zhongding Machinery to build an evergreen foundation. At present, the company has modern cutting equipment, advanced computer-aided design system, and perfect three-dimensional simulation test system to ensure the performance of the product. We mainly produce 50-5000tpd crushing line and 100-3500tpd beneficiation equipment.
Our company has passed the international ISO9001-2000 system certification, standardized design, production, assembly, and testing. Zhongding Machinery has always insisted on independent innovation, and its annual R& D investment accounts for more than 3% of total sales. Have independent import and export rights within the territory of the People′s Republic of China. The products are divided into two series with more than 100 specifications. While expanding the domestic market share, the products are exported to more than 50 countries and regions including Chile, Venezuela, Peru, Russia, Ukraine, Georgia, Kazakhstan, South Korea, Yemen, Australia, Indonesia, Malaysia, Vietnam, and Africa.
Plenty of technology accumulation and application of new technologies have made our company successively awarded as "Integrity Management Demonstration Unit", "Henan Province Top Ten Technological Innovation Demonstration Enterprises", "National Quality Standardized Consumer Satisfaction Brand", and "Advanced Production Enterprise in the Sand and Stone Industry" "" and other continuously updated titles, has won more than 20 national and industry awards. Objectively demonstrated the strength of Zhongding. The perfect after-sales service system and professional after-sales service team provide customers with timely and thoughtful service. Customer demand is the driving force of our Zhongding people for continuous innovation. Customer success is the foundation of our success and also our highest pursuit.
Zhongding Machinery attaches great importance to international academic exchanges and cooperation, and has sent groups to study abroad for many times to exchange experience and learn from other countries′ manufacturers in the mineral processing industry, such as Canada, Russia and other countries, to achieve mutual interaction and mutual exchange. Win. At present, the products are sold to Kazakhstan, India, Indonesia, Turkey, Canada, Africa, and other countries and regions, and have been widely praised! We will work hard to provide more new products and technical support for domestic and foreign customers with tireless professionalism, and ensure that the Zhongding brand service and every customer are well-known in the corners of the world.