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HNMY provides mechanical equipment for silo blockage removal, material flow assistance, coal chute blockage cleaning, and controlled bulk material discharge

Coal Chute Blockage Cleaning Machine

HNMY's Coal Chute Blockage Cleaning Machine is designed to remove accumulated, compacted and sticky coal from vertical and inclined transfer chutes, coal drop pipes and other coal handling equipment. It helps address coal sticking, material buildup, bridging, clogging and flow interruption caused by wet coal, sticky coal and poor material flow conditions.The equipment is suitable for coal handling applications in thermal power plants, coal mines, coking plants and other industrial coal conveying systems.

Common Coal Chute Blockage Problems

Coal transfer chutes can experience different flow problems depending on coal moisture, particle size, stickiness, chute geometry and operating conditions.

• Coal sticking on chute walls

• Wet coal accumulation

• Compacted coal buildup

• Material buildup

• Restricted coal flow

• Chute blockage and flow cutoff

• Unexpected production downtime

How Does the Coal Chute Blockage Cleaning Machine Work?

The Coal Chute Blockage Cleaning Machine uses a mechanical rotating cleaning mechanism to act directly on accumulated or compacted coal inside the chute. When coal buildup restricts the material passage, the cleaning mechanism breaks up the accumulated material and helps reopen the flow path.

Key Features and Advantages

Effective Coal Blockage Removal：Designed to remove accumulated and compacted coal from blocked chute sections.

• sticky coal

• compacted coal

• Wet coal accumulation

• wall buildup

• Material bridging

Reduce Manual Cleaning：Mechanical blockage removal can reduce the need for manual intervention in difficult-to-access chute areas.

Stable Coal Feeding：Helps restore stable coal flow and support continuous material transfer in coal handling systems.

Suitable for High-Moisture Coal：The equipment can be configured for coal with different moisture and flow characteristics.

Adaptable to Existing Chutes：Equipment dimensions and configuration can be adjusted according to chute dimensions, blockage location and installation conditions.

Applications in Coal Handling Systems

This system is designed for silos handling high bulk density materials (≤4.8 t/m³) with extremely poor flowability, high viscosity and a tendency to form blockages.

✓ Iron ore powder silos in steel plants

✓ Limestone storage silos

✓ Sintering and pelletizing plant mixing silos

✓ Raw material storage silos

✓ Coal bunkers in coal-fired power plants

✓ Coal slime and sludge storage silos

It is especially suitable for high-density, low-flow-rate bulk material storage systems where material buildup, bridging, arching and wall adhesion frequently occur. The equipment helps maintain continuous material discharge, reduce manual cleaning operations and improve the reliability of bulk material handling systems.

Suitable Materials

• Coal

• Coal ash

• Cement raw materials

• Fly ash

• Mineral powder

• Limestone

• Sludge

• Other bulk solids

Technical Parameters

Parameter Item	Technical Index
Applicable Industry & Equipment	Coal-fired power plants, coal handling systems, coal transfer chutes and coal drop pipes
Applicable Materials	Unlimited total moisture (Mt); powder, sludge & pasty materials
Rated Output per Unit	1 – 50 t/h
Noise Level (1m away)	< 65 dB
Scraper Height	500 mm – 4500 mm
Connection Type	Upper & lower flange connection
Control Cabinet Protection	IP65
Motor Parameter	380V, IP65 protection grade, Class F insulation
Clearance between Vortex Cutter & Pipe Wall	≤ 5 mm
Motor Power Range	0.75 kW – 4 kW (380 V)
Rotation Speed of Unblock Machine	0.33 r/min – 3.7 r/min (50 Hz)
Matched Inverter Power	0.75 kW – 5.5 kW
Lubrication Mode	Multi-point lubrication / Centralized lubrication
Whole Machine Service Life	> 15 years

FAQ

Why does coal block inside chutes?

Coal chute blockage can be caused by high moisture, sticky coal properties, fine particle accumulation, material bridging, chute geometry and insufficient material flow. These conditions can cause coal to adhere to chute walls or accumulate in restricted sections.

Can it handle wet coal?

Yes. The machine can be configured for different coal characteristics, including wet, sticky and poorly flowing coal. The appropriate configuration depends on moisture content, blockage characteristics and chute conditions.

What industries use this equipment?

It is widely applied in thermal power plants, cement plants, steel mills, chemical plants and mining for fly ash, coal powder, cement raw meal and other sticky bulk solids.

Can the equipment be customized?

Yes. We support custom dimensions, power, control modes (manual / servo detection / intelligent timing module) to match your silo parameters and working conditions.

Construction Cases

For each project case, we deliver well‑tailored equipment solutions and complete supporting services with our professional industry experience.

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