Sand Dryer

Sand Dryer

The mining single-drum sand dryer is a horizontal rotary drying equipment. The cylinder is installed at an incline and supported by riding rings for operation. It is equipped with internal lifting flights, a transmission system, sealing devices, a hot air furnace, and a dust collection system. The dryer can be powered by various heat sources and operates in either co-current or counter-current flow modes. By combining the tumbling and scattering of materials with hot air convection, the equipment achieves efficient dehydration, boasting high thermal efficiency and excellent drying performance.

This equipment is widely used in industries such as mineral processing, building materials, metallurgy, and chemical engineering. It is capable of drying various ores (e.g., quartz sand, iron powder), building material feedstocks, chemical materials, as well as coal slime and biomass. Ultimately, it facilitates the deep processing of materials and promotes resource recycling and reuse.

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ADVANTAGES

1.Premium Materials: The drum is fully welded using 304 stainless steel or alloy steel plates, which increases wear resistance by 3 to 4 times. The modular design greatly simplifies subsequent maintenance.

2.Optimized Design: Internal lifting devices are installed to ensure uniform material dispersion, which facilitates moisture evaporation. The exterior is also insulated to minimize heat loss.

3.Eco-Friendly & Energy Saving: A combination of lifting flights eliminates the "wind tunnel" effect. Utilizing biomass or natural gas as heat sources ensures high thermal efficiency with zero environmental pollution.

4.Comprehensive Auxiliary Equipment: The complete production line is equipped with high-temperature resistant, eco-friendly dust collectors, ensuring a dust-free and pollution-free production process.

5.Strong Adaptability: Capable of processing lump, granular, and powdered materials ranging from 0.075mm to 40mm. With special heat-resistant steel plates, it can withstand operating temperatures up to 800℃.

PRODUCT STRUCTURE

Feeding System: Wet materials are transported to a hopper via a belt conveyor or a bucket elevator. They are then fed into the feeding pipe through a feeder and enter the feed end of the dryer. The feeding pipe is designed with a slope greater than the natural angle of repose of the materials, ensuring a smooth flow into the dryer.

Drum Operation & Flow Modes: The dryer consists of a slightly inclined rotating drum. Materials are fed from the higher end. The heat carrier (hot air) typically enters from the lower end, flowing in a counter-current direction against the materials. Alternatively, a co-current flow mode, where the heat carrier and materials enter the drum from the same end, can also be utilized.

Internal Lifting & Drying Mechanism: Lifting flights (copy boards) are installed on the inner wall of the drum. As the drum rotates, these flights lift and shower the materials, significantly increasing the contact surface area between the materials and the hot airflow. This greatly enhances the drying rate and promotes the forward movement of the materials.

Discharge: The dried materials are discharged through the outlet, fall onto a belt conveyor, and are then transported to the finished product silo.

TECHNICAL PARAMETERS

Specification	GHG-1310	GHG-1512	GHG-1816	GHG-2016	GHG-2218	GHG-2418	GHG-2822
Outer cylinder diameter (m)	1.3	1.5	1.8	2.0	2.2	2.4	2.8
Outer tube length (m)	10	12	16	16	18	18	22
Cylinder speed (rpm)	2—6	2—6	2—6	2—6	2—6	2—6	2—6
Initial moisture content of materials (%)	6—12	6—12	6—12	6—12	6—12	6—12	6—12
Moisture content of materials (%)	≤1	≤1	≤1	≤1	≤1	≤1	≤1
Maximum intake air temperature (°C)	750—900°C	750—900°C	750—900°C	750—900°C	750—900°C	750—900°C	750—900°C
Production capacity (t/h)	6—10	10—13	15—20	20—25	25—30	30—35	40—50
Motor power (kw)	16	18.5	22	30	37	45	75

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