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Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service!

Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service!

Product Description Rotary Sand Dryers are divided into several categories according to the different types of sand, such as river sand dryers, silica sand dryers, dryers for...
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Product Description

Product Description

Rotary Sand Dryers are divided into several categories according to the different types of sand, such as river sand dryers, silica sand dryers, dryers for mountain sand, sea sand and sand of casting applications, etc.. those different types of sand have different physical properties like sizes, moisture, etc.. and according to final their applications, they are always specific requirements for final dried sand. For example, silica sand for ceramic and glass industry, Iron is very sensitive in the material and cause coloring of final products, so stainless steel is used to avoid iron contamination. Meanwhile, same dryer may have different output capacity because different physical properties (see following chart).

Nowadays, our three-cylinder rotary dryers have completely replaced conventional rotary dryers in sand drying plants and they been proved to have many advantages.

1. Heat efficiency improved 40% more than conventional rotary dryers

2. Coal consumption (as fuel) is 30% of conventional dryers, less than 9kgs of coal to dry 1 ton of sand and power consumption is 60% of conventional dryers.

3. Output sand and outer shell temperature is no more than 60 C, exhaust air temperature is less than 120 C. filter bags can work twice Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! time than conventional dryers, the output sand could be conveyed to warehouse directly without further cooling.

4. Airtight sealing avoids air leakage in conventional rotary dryers

5. Floor area requested for installation is 40% of conventional rotary dryers, saving 60% of infrastructure costs.

6. Output moisture could be guaranteed at 0.5% to 1% if input moisture is 15%, it is ideal choice for cements plants, dry mixed mortar plants, etc..

7. Heating source could be anthracite, bituminous coal, coal gangue, oil and gas. It could dry materials in lumps(size less than 40mm), granular and powdery materials.

8. Price is no more than 20% of similar equipment made in Europe. The barrel is made of manganese steel. Wear resistance is improved by 3 to 4 times.

Installation guide:

General Data of three cylinder rotary dryers drying different types of sand

Model

Capacity(t/h)

Output moisture
(%)

Coal consumption
(kg/t)

Motor power
(kw)

Weight
(T)

Mountain sand

River sand

Sea sand

Silica sand

Casting sand

DLS623

3-5

3-3.5

2.5-3

4-5

3-4

5-7

4

3.2

DLS625

5-6

4.5-5.8

4.5-5

5-7

5-6

5-7

5.5

5.1

DLS628

8-9

7.5-8.5

7-8

9-10

8.5-10

6-8

7.5

7.8

DLS6210

10-12

10-11

9-10

11-15

10-13

8-10

4×2

9.3

DLS6215

15-17

15-16

14-15

17-20

16-19

8-10

5.5×2

14.9

DLS6220

21-23

20-22

20-21

25-27

24-26

8-10

4×4

24.8

DLS6225

25-28

23-25

22-25

33-35

32-35

8-12

5.5×4

26.4

DLS6230

30-35

29-32

28-32

40-45

38-43

8-12

7.5×4

42.4

General information of Rotary Dryers

Rotary dryer is by far the most commonly encountered dryer in the mineral industry, rotary dryers are cylindrical drums normally supported on two or more tires running on a set of rollers at a slight incline to help convey the material. Wet feed enters the dryer through a feed chute, belt conveyor, screw conveyor, vibrating conveyor, or other suitable means. Drying air flows through the shell in either a co-current or countercurrent fashion. Lifters in the drum shower the material over the cross section of the shell to induce intimate contact with the drying air. Rotary dryers are very versatile and economic for large-tonnage drying of relatively low-value materials. In the mineral industry, they range from 1.5 to 4 m in diameter and are 6- to 30-m long. Evaporative capacities are of the order of 30 to 120 kg/h/m3 (dryer volume); thermal efficiencies range from 35 to 70%. Low capital costs, close quality control, low maintenance costs, and trouble-free operation over extended periods are some of the advantages of rotary dryers. Among the disadvantages are the difficulty of sealing, high structural load, and non-uniform residence times. For fine materials that tend to cause a dusting problem when dry, it is difficult to operate rotary dryers at high efficiency without more complicated mechanical modifications.

It is impossible to use one type of dryer for all applications. Pilot-plant tests and prior experience are the best guides in the selection of the proper type as well as the optimal operating conditions for the specific problem at hand. All elements of drying costs, namely, drying system (including pretreatment of feed and post-treatment of dry product), fuel, power, and maintenance costs, must be examined carefully before selecting the drying equipment. Efficient use of heat generally requires the control of entering- and exit-gas temperature and the control of the drying time to minimize heat losses. In the mineral industry, it is not common to use heat-recovery equipment even with modern installations. Maintenance costs are related to the first costs. Inadequate attention to mechanical and structural considerations, which may lower initial costs, may in the long run lead to higher maintenance costs.

For directly heated counter-flow or parallel-flow rotary dryers, the typical heat requirement for evaporation ranges from 670 to 1230 Kcal/Kg. For efficient operation, it is desirable to use the highest possible air temperature; in the mineral industry the normal range is 760 C to 980 C. For heat-sensitive materials, lower temperatures may be needed. For best heat transfer, it is necessary to use the highest possible air velocity; for dusty materials this poses a problem. For product moistures below 1%, a counter-flow dryer is recommended if the product is not heat-sensitive. For thermolabile materials with product moisture in excess of 1%, a parallel-flow dryer is desirable as the feed is in contact with hot gases while drying the surface moisture. The solid temperature does not exceed the corresponding wet-bulb temperature (corrected for radiation effects). For sticky or caking solids, which do not shower well, it is often necessary to allow more residence time in the dryer. New designs include special internals within the shell to break up the formation of large agglomerates in the drum so that a rotary dryer could be used to dry sticky or pastelike feeds.

Dryer loading may vary from 3 to 15%, of which 8 to 12% is the most common. This represents the volume occupied by the material within the dryer as a percentage of the total volume of the shell. Rotary dryers have a retention time of 5 to 25 min, with the normal range of 7 to 15 min. Dryer speed and inclination can be adjusted to attain the desired retention time for a given material.

Our Services

1. Free consultation on technical &commercial issues, provide market evaluation, project feasibility based on each customers' condition.

2. Provide free drawings at no cost for factory layout, piping & wiring systems, installation plannings,

3. Free installation, commissioning and operation training services at no costs to customers.

4. 24/7 aftersales service, free of charge if repair service required within 1 year after installation.

Jinan Joysun Machinery Co., Ltd., relying on strong technical support, advanced production equipment, excellent processing technology and scientific detection methods, we ensure product quality and delivery time, and provide a fully optimized technical solution according to your requirements. Jinan Joysun Machinery Co., Ltd. for thawing of meat products and seafood, the equipment has stable performance, reliable quality and short thawing time. It is an ideal defrosting equipment for high-tech meat products, made of stainless steel, conforming to food production standard. Welcome new and old customers to inquire. Our international business covers customers all over the world. We have competitive prices and are proud of our excellent after-sales service. The working attitude of the company and the continuous improvement of the innovation concept will lead Tuo Bo and you to step into the brilliant future hand in hand and create a better future.
Through continuous exploration and practice, the company has developed the advantages of low investment, high efficiency, low operation cost, high product quality and convenient control and operation. The microwave frequency thawing equipment with microwave frequency of 915MHz and output power of 20kw-200kw is above. For food processing enterprises such as chain fast food industry in China, food thawing is provided, and the improvement of food thawing technology in China is also renewed. The benefit is not only "farsightedness", but also at the foot of the eyes. According to experts, the traditional food thawing are based on heat conduction method, material surface temperature is higher than the internal temperature in the thawing process, inevitably there will be drop loss, which will increase the business loss. If merchants use microwave dryer, Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! power, material temperature and transmission speed can be used to achieve adjustable linkage, and the overall heating process control advantages can greatly reduce material consumption and improve food utilization. In addition, as the microwave thawing only needs electricity, no need to consume a lot of water, in the low carbon era, this is not lost a recommended fashion trend.

microwave dryer is a new type of environmental protection drying method. When dry, Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! directly to the medium molecules converted into heat, because the Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! penetrating performance of heating medium and at the same time, no need to heat conduction, so the heating speed is very fast, the water content below 30% of the food, the drying speed can be shortened hundreds of times.

AAABB

microwave dryer advantages of equipment

1, microwave dryer, short, fast

Conventional thermal sterilization is used to transmit heat from the surface of the food to the interior through heat conduction, convection, or radiation. It often takes a long time to get the germicidal temperature. The Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! is the direct interaction between microwave energy and microorganisms such as food and bacteria. The interaction between heat effect and non thermal effect can achieve fast warming and bactericidal action, and the processing time is greatly reduced. The sterilization effect of various materials is usually 3-5 minutes.

AAABU

2, Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! low temperature sterilization keep the nutrition and traditional flavor The Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! is through special heat and non thermal effect sterilization, compared with conventional thermal sterilization, it can get the desired disinfection effect at relatively low temperature and short time. Practice shows that the general sterilization temperature can reach the effect at 75-80 degrees centigrade. In addition, microwave dryer processed foods can retain more nutrients and color, aroma, taste, shape and other flavors, and have puffing effect. For example, the vitamin C retained in vegetables treated by conventional heat treatment is 46-50%, while that in microwave treatment is 60-90%, while that in conventional heating is 58%, while that in microwave heating is 84%.

PPPEE

3 microwave dryer and Three microwave Shell Rotary Dryer for Sand and Mineral Processing, Turnkey Service! save energy Conventional thermal sterilization often has heat loss in the environment and equipment, and microwave is directly treated to food, so there is no extra heat loss. In addition, the conversion efficiency of the electric energy to the microwave energy is in the 70-80%, and the power is generally reduced to 30-50%.

PPOOO

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