Single-cylinder Dryer

Volume (m3)
11.3-81.4
Volume (m3)
2.4-21.7
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Disassembled single-drum dryer parts and drum sections on the workshop floor
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Single-cylinder Dryer: Product Description

◎The single-drum dryer, also called a rotary drum dryer or a single-drum horizontal dryer, is a rotary drying machine built around one long steel drum. A rotating shaft and gear system drive the drum, and a heat source outside the shell supplies the hot gas. Capacities run 1 to 75 tons per hour across sixteen standard models, with motor power from 3 to 110 kW and max feeding size under 10 mm.

◎Process system parameters are optimized and the line runs at reasonable operating values, so thermal efficiency holds high and energy consumption stays low. Coal consumption and electricity consumption are 30% to 70% lower than those of general dryers, and hourly output is 50% to 85% higher on the same duty. The gap shows up in the fuel bill and on the power meter.

◎The large-diameter drum carries more material per pass, and the drying duty is matched by adjusting drum length instead of buying a bigger machine. It dries sand, slag, clay, gypsum, limestone, coal, coal slime, fertilizer, feed and similar granular material in food, chemical, pharmaceutical, agriculture, building materials, metallurgy and mineral processing plants.


End of the single-drum dryer drum shell with the green riding ring in the workshop
Single-cylinder Dryer

Long Wear Life Steel Drum

The cylinder body is built from steel plate, so the drum has high hardness and high toughness at the same time. Compared with other drum materials, its wear resistance is higher, which matters where abrasive sand, slag or mineral powder runs through the shell every hour. A slow-wearing drum keeps its roundness longer, so the lifting plates and seals stay aligned inside it.

Single-cylinder Dryer

High Drying Strength

Air velocity inside the drum is high, so wet material is well dispersed in the gas phase instead of lying in a static bed. Every exposed surface of every particle becomes an effective drying area, which multiplies the drying area a fixed drum volume can offer. That is why a single-drum dryer can hold its rated output on a compact shell.

Single-cylinder Dryer

Sealed, Low-Dust Running

The drying system is well sealed and fitted with a complete dust removal device, so little dust reaches the workshop floor. Operators work in a cleaner environment, and the material that would have left as dust is collected instead of lost. The control system runs the line automatically, so operation is simple and the settings repeat from one shift to the next.

Single-cylinder Dryer

Advanced Drum Internals

The new internal structure strengthens the cleaning and heat conduction of the dispersed material. Lifting plates and internal flights keep turning the bed over, so fresh wet surfaces keep facing the hot gas and damp material does not pack against the shell. The simplified internals are easy to clean and maintain during a planned stop.

Single-cylinder Dryer

30-70% Lower Fuel Use

By optimizing the process system parameters and running the line at reasonable operating values, thermal efficiency improves and energy consumption drops. Coal consumption and electricity consumption are 30% to 70% lower than those of general dryers, and hourly output rises 50% to 85% on the same duty. That difference is what you see in the monthly fuel bill.

Single-cylinder Dryer: 3 Reasons to Choose

Buyers compare fuel cost per ton, capacity coverage and drum sizing when they choose a dryer. Here is what sets the single-drum dryer apart.


◎ 30-70% Less Coal and Power

Coal consumption and electricity consumption run 30% to 70% lower than those of general dryers, and hourly output is 50% to 85% higher. Process system parameters are optimized and the line runs at reasonable operating values, so thermal efficiency holds instead of drifting. Over a long drying campaign that difference shows up in the fuel bill every month.


◎ One Drum, Sixteen Sizes

Capacity covers 1 to 75 t/h and motor power 3 to 110 kW across sixteen standard models from Φ1.2x10 to Φ3.0x25, with max feeding size under 10 mm. A small fertilizer line and a large mineral drying plant run the same drum design, so lifting plates, seals, rollers and operating know-how carry across the whole range and spares stay common.


◎ Drum Matched to the Duty

The drum runs a large diameter, so it carries more material per pass than a narrow shell of the same length. The drying duty is then matched by adjusting the drum length, which means retention time follows your material instead of you paying for an oversized machine. Send your material, inlet moisture, target moisture and required output and we return the model and drum length.


How the Single-cylinder Dryer Works

◎The single-drum dryer dries material in direct contact with hot gas inside one long rotating drum. Three things happen at the same time: heat transfer, material tumbling and material conveying. Together they set how fast moisture leaves and how evenly the material dries.

◎Heat transfer: a hot air furnace or a burner generates the high-temperature hot air flow. The gas enters the drum through the hot air duct and meets the wet material directly. Moisture evaporates at temperature and is carried away by the gas stream, so the material dries in the gas phase and the whole particle surface does the work. The furnace can burn coal, gas, fuel oil or biomass, and it can also run on recovered waste heat, chosen by local emission rules and energy cost.

◎Material tumbling: the drum rotates under the drive of the motor, and lifting plates inside the shell pick the bed up and drop it through the gas stream again and again. Material is turned over and mixed continuously, which keeps fresh wet surfaces meeting the hot gas and holds the drying rate high. Tumbling also stops material from building up and agglomerating on the shell, so the drum stays clean and the heat stays even along its full length.

◎Material conveying: the drum is set at a small inclined angle, so gravity and the drum slope move the material steadily toward the discharge end. Residence time is controlled by the slope, the rotation speed and the internal flights, so the material stays inside long enough to reach the moisture your next process needs. Discharge stays steady even when feed moisture moves up and down, as long as the three running settings are held.

◎The line around the drum matters as much as the drum itself. The feeding device meters wet material into the inlet at a steady rate, with feed size held under 10 mm. At the outlet, the dried product leaves at the discharge end, while the induced draft fan pulls the waste gas through a dust removal device before the stack. Drum speed, air flow temperature and feed rate are the three settings that hold final moisture steady, so they are matched to your material during commissioning.


Schematic drawing of the single-drum dryer line with the main equipment outlines

Product Photos

Specification

ModelVolume (m3)Capacity (t/h)Inclined Angle (%)Temperature (C)Main Motor (kW)
Φ1.2x1011.32.4-3.03-5700-8007.5
Φ1.2x1213.52.4-4.53-5700-8007.5
Φ1.5x1221.24.5-5.73-5700-80015
Φ1.5x1526.55.7-7.13-5700-80015
Φ1.8x1435.67.6-9.73-5700-80018.5
Φ1.8x2050.89-12.53-5700-80022
Φ2.0x1650.249.5-133-5700-80018.5
Φ2.0x2062.89.5-133-5700-80030
Φ2.2x1245.69.7-12.23-5700-80022
Φ2.2x1660.813.0-16.23-5700-80022
Φ2.4x1881.417.4-21.73-5700-80037
Φ2.4x2090.419.3-24.13-5700-80045
Φ2.4x2299.521.2-26.53-5700-80045
Φ2.6x24127.427.2-34.03-5700-80055
Φ3.0x20141.330.1-37.73-5700-80075
Φ3.0x25176.637.7-47.13-5700-80075


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Common Problems

This section is designed to address the most pressing inquiries customers may have regarding the daily operation, maintenance, product advantages, and after-sales service of our machine. Our aim is to help you gain a comprehensive understanding of our overall capabilities and enable you to make informed decisions for your projects.

A single-drum dryer, also called a rotary drum dryer or a single-drum horizontal dryer, is a drying machine built around one long steel drum. A rotating shaft and gear system turn the drum while a heater supplies hot gas, so the material is heated evenly inside the shell. It is an efficient and widely used drying equipment, with capacity from 1 to 75 t/h.

A single-drum dryer uses one long drum; a three-drum dryer nests an inner, a middle and an outer drum in one shell, so its material meets hot gas three times. The single-drum design is simpler, easier to clean and cheaper on parts, and it suits high-volume material that flows well. The three-drum design saves more fuel on sticky or high-moisture material.

It dries granular and free-flowing material such as sand, slag, clay, gypsum, limestone, coal, coal slime, fertilizer and feed, with feeding size under 10 mm. It is widely used in food, chemical, pharmaceutical, agriculture, building materials, metallurgy, mineral processing and other fields. Send your material for a drying test recommendation.

Capacity runs 1 to 75 t/h and motor power 3 to 110 kW across sixteen standard models, from Φ1.2x10 to Φ3.0x25, with drum volumes of 11.3 to 176.6 m3. Max feeding size stays under 10 mm, and the inclined angle of 3 to 5 percent sets the retention time. Non-standard drum lengths are built to match your duty.

Hot gas from a furnace or burner enters the drum through the hot air duct and meets the wet material directly, so moisture evaporates and leaves with the gas stream. Lifting plates inside the rotating drum pick the material up and drop it through the gas again and again. The small inclined angle then carries the dried material to the discharge end.

Coal consumption and electricity consumption run 30% to 70% lower than those of general dryers, and hourly output is 50% to 85% higher, once process system parameters are optimized and the line runs at reasonable operating values. The saving comes from higher thermal efficiency in the drum. Actual figures depend on your material and inlet moisture.

Final moisture is set by three running values: air flow temperature, drum speed and feed rate, all matched to your material during commissioning. On dust, the system is well sealed and fitted with a complete dust removal device, so waste gas leaves only after treatment and the working environment stays clean. Feed size should stay under 10 mm for steady drying.

Price depends on the drum diameter and length, the heat source, the dust removal stage and the equipment in the line, such as the furnace, the feeding device and the fan. Choose by moisture load rather than tonnage alone. Send your material, inlet moisture, target moisture and required output for the model, drum length and a factory price.

COMPREHENSIVE SERVICE & GENUINE SPARE PARTS

Zhongxin Heavy Industry provides not only high-performance equipment but also full life-cycle support solutions.

Single-cylinder Dryer
Single-cylinder Dryer
60-Second Response, 30-Minute Technical Reply

Every enquiry gets an answer within 60 seconds during working hours, and a technical reply follows within 30 minutes. The technical reply covers the model, the drum diameter and length, the heat source and the dust removal stage, plus the running settings your material needs. Send your material, inlet moisture and target moisture together and the reply arrives with a matched line, not a generic sheet.

Service
24-Hour Design Proposal

A layout drawing and a proposed configuration reach you within 24 hours. The proposal covers the single-drum dryer, the hot air furnace, the feeding device, the discharge conveyor and the dust removal stage, so you can check the fit against your site before ordering. It also lists the foundation loads and the clearance the drum needs for a lifting plate change.

Service
365-Day Service Desk

Our service desk takes your calls every day of the year. Spare parts orders, commissioning questions and running adjustments all go through the same contact, so you are never routed between departments. Every dryer we ship is logged with its model, drum volume and running settings, so the person answering already knows your unit.

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