Rotary Kiln Dryer Machine

What’s a Rotary kiln dryer

Rotary kiln dryer is a dryer machine disposal massive materials. It is widely used in metallurgy, construction, light industry and so on. In the chemical industry, most of the chemicals use rotary kiln dryers like ammonium sulfate, sulfide, and powder, ammonium nitrate, urea, oxalic acid, calcium carbonate, calcium magnesium phosphate fertilizer, normal superphosphate calcium, heavy superphosphate and sodium melamine. Rotary kiln dryer can generally used in granular material. It can also adapt to viscous paste or high moisture content materials by drying them with dry materials. Moisture content rate of materials is generally about 3-25%  while the moisture content of production is about 0.5%.

Rotary Kiln Dryer Working Principle

During the drying process, wet materials are sent to the hopper by belt conveyor or bucket elevator. Then be put into feed end through the charger. The inclination of the feed pipe is bigger than the material’s natural inclination to ensure the material’s flow into the dryer successfully. The tumble dryer cylinder is a rotating cylinder slightly inclined from the horizontal line.

The material is added from the higher end, the heat carrier enters from the lower end, and comes into countercurrent contact with the material, and the heat carrier and the material flow into the cylinder together. As the cylinder rotates, the material moves to the lower end under the effect of gravity. During the forward movement of the wet material in the cylinder, the heat is directly or indirectly obtained by the heating medium, so that the wet material is dried, and then sent out by a belt conveyor or a screw conveyor at the discharge end. A copy board is installed on the inner wall of the cylinder, and its function is to copy and scatter the material, so that the contact surface between the material and the air flow is increased to increase the drying rate and promote the material to advance. The heating medium is generally divided into hot air and flue gas. After the heating medium is passed through the rotary drum dryer, a cyclone dust collector is generally required to capture the material in the gas. If you need to further reduce the dust content of the exhaust gas, you should also discharge it after passing through a bag filter or wet dust collector.

Rotary Kiln Dryer Structure

With the working principle of heat transfer and effect of the gravity, Drum Dryer is mainly composite with the drum, the lifting plate, the dryer roller, and the feeding box. The drum is set at a certain angle of the processing of the materials. The plates lift the wet powder or particles up and down so that the heat transfer is accomplished. The roller is the force for the drum to whirl around in order that the materials can get enough the heat of the inner wall. ZonedingDrum Dryer is of the following advantages:

Adapt to a variety of materials drying operation, can reasonably adjust machine parameters depending on different material humidity and nature, more targeted and higher drying quality.

Concurrent drying, heating medium and wet materials high temperature in and low temperature out; highly efficient and reasonable.

High-temperature resistance, fast drying, less fuel consumption, and low drying cost.

After drying, the moisture content of coal slime is lower than 8% and the granularity under 8mm.

General Specification

Spec./m (Dia.×Length)	Shell Cubage (m³)	Capacity (t/h)	Installation Obliquity (%)	Highest Inlet Air Temperature (℃)	Main Motor (kw)	Weight (t)
Φ1.2×8.0	9.0	1.9～2.4	3～5	700～800	7.5	9
Φ1.2×10	11.3	2.4～3.0	3～5	700～800	7.5	11
Φ1.5×12	21.2	4.5～5.7	3～5	700～800	15	18.5
Φ1.5×14	24.7	5.3～6.6	3～5	700～800	15	19.7
Φ1.5×15	26.5	5.7～7.1	3～5	700～800	15	20.5
Φ1.8×12	30.5	6.5～8.1	3～5	700～800	18.5	21.5
Φ1.8×14	35.6	7.6～9.5	3～5	700～800	18.5	23
Φ2.2×12	45.6	9.7～12.2	3～5	700～800	22	33.5
Φ2.2×14	53.2	11.4～14.2	3～5	700～800	22	36
Φ2.2×16	60.8	13.0～16.2	3～5	700～800	22	38
Φ2.4×14	63.3	13.5～16.9	3～5	700～800	37	45
Φ2.4×18	81.4	17.4～21.7	3～5	700～800	37	49
Φ2.4×20	90.4	19.3～24.1	3～5	700～800	45	54
Φ2.4×22	99.5	21.2～26.5	3～5	700～800	45	58
Φ2.6×24	127.4	27.2～34.0	3～5	700～800	55	73
Φ3.0×20	141.3	30.1～37.7	3～5	700～800	75	85
Φ3.0×25	176.6	37.7～47.1	3～5	700～800	75	95
Φ3.2×25	201	42.9～53.6	3～5	700～800	90	110
Φ3.6×28	285	60.8～76.0	3～5	700～800	160	135

Customer Site

Trusted Sand Dryer Manufacturer——Zoneding

Zoneding is your trusted manufacturer and designer of sand dryers. Over the years, we have accumulated rich experience in the industry, always committed to providing excellent product quality and premium customer service. At Zoneding, we understand the importance of product quality, so we rigorously control every production process to ensure that each piece of equipment meets the highest standards. Furthermore, we prioritize user experience. From manufacturing to delivery, and from installation to commissioning and after-sales service, we have a professional team to follow up on every step, ensuring your user experience is worry-free.

Our product range also includes grinding mills, crushers, conveyors, feeding machine as well as beneficiation equipment, fine sand recycling equipment etc,which are widely applied in electricity, metallurgy, mine and quarry ,wharf, granary, chemical industry. Zoneding can provide you with safe and reliable solutions. Choosing Zoneding means not only getting high-quality products but also experiencing our professional, meticulous, and attentive service. Let’s work together to create a better future!