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Coal Washery Slurry Pump

Dec. 12, 2023

In the coal mining industry, slurry pumps are vital for material transport, especially in coal washing plants, where different processes require reliable, high-efficiency pump systems. This case study showcases how coal mining slurry pumps from Sunbo Machinery are applied across various slurry handling stages in a coal washery operation.

Slurry Pumps are used a lot in the coal washing plant in different coal washing process. Here are the details of the pumps.


Qualified medium pump, it is responsible for conveying the qualified medium in the qualified medium barrel to the hydrocyclone to mix it with coal in the hydrocyclone to complete the separation of two phases (light phase and heavy phase). Light medium pump, it is used for conveying the thin medium slurry in the thin medium barrel to the magnetic separator for magnetic separation, and the pure medium obtained after magnetic separation will be returned to the qualified medium barrel. Medium feeding slurry pump, it is used for transporting the concentrated medium in medium pool to the qualified medium barrel and preparing the qualified medium according to a certain proportion.

Cyclone feed pump is responsible for dealing the mixed slurry composed of coal and qualified medium in the mixing drum to the hydrocyclone to complete the separation of two phases (light phase and heavy phase) in the hydrocyclone. Sweeping slurry pump, it is used for conveying the ground water or leaked slurry to the thin medium barrel. Circulating water pump, it is responsible for dealing the clarified water in the concentration tank to the water washing system, which is mainly used to wash the magnet powder medium attached to the coal block and as system water.

Thickener underflow pump which is responsible for transferring the concentrated high concentration slime water in the concentration tank to the slime mixing drum of water washing system. Filter press feed pump, it is working for conveying the high concentration slime water in the slime mixing drum to the filter press for pressure filtration dehydration to form filter cake. 



Application of Coal Mining Slurry Pump in Coal Washing Process

In a typical coal preparation plant, multiple slurry pump types are used to support key coal processing stages. Here's how Sunbo’s coal mining slurry pump systems contribute to the efficiency and productivity of this project:

Qualified Medium Pump

Used for transporting qualified medium slurry from the medium barrel to the hydrocyclone. The purpose is to mix with coal and separate light and heavy phases for improved coal recovery.

Recommended Product: Horizontal Slurry Pump

2. Light Medium Pump

This coal washing slurry pump transports thinner medium slurry to the magnetic separator. After purification, the medium returns to the qualified medium barrel, ensuring recycling and cost-efficiency.

Recommended Product: ZGB Slurry Pump

3. Medium Feeding Slurry Pump

Delivers concentrated medium from the medium pool to the mixing tank, blending into a properly proportioned qualified medium for consistent separation efficiency.

Recommended Product:Vertical Slurry Pump

4. Cyclone Feed Pump

Feeds the mixed slurry of coal and medium into the hydrocyclone for density-based separation. This is a core component in the heavy-medium separation system.

Recommended Products:
ZJ Slurry Pump
Mission Pump

5. Sweeping Slurry Pump

Used to pump leaked slurry or underground water to the thin medium barrel, ensuring system cleanliness and continuous recycling.

Recommended Product:
Submersible Slurry Pump

6. Circulating Water Pump

Transfers clarified water from the thickener tank to the coal washing unit to clean magnetic powder on coal surfaces, and acts as system water.

Recommended Product:ASME B73.1 Pump

7. Thickener Underflow Pump

Handles high-density slime water, sending it from the concentration tank to the slime mixing tank for further treatment.

Recommended Product:FGD Pump

8. Filter Press Feed Pump

Conveys high-concentration slime to the filter press for dehydration, forming solid filter cake and reducing moisture content.

Recommended Products:Dredge Gravel Pump,Froth Pump


Spare Parts & Custom Pump Solutions

We also offer:


Explore More Pump Options from Sunbo


Why Choose Sunbo for Your Coal Mining Slurry Pump Needs?

·  Field-proven performance in coal mining operations

·  Wear-resistant designs for long lifecycle

·  Full range of vertical, horizontal, and submersible models

·  OEM customization available for global clients


Ready to upgrade your coal mining slurry pump system?
Contact us to discuss your application and get expert pump recommendations from Sunbo’s engineering team.

Coal Washery Slurry Pump


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Disclaimer: We don't represent or is not in anyway affiliated with Warman®, Metso®, Goulds®, Durco®, Andritz®, Mission® and other brand names, all these brand names are respected of their owners. Any brand name, model, number, symbols or any descriptions are used for reference purpose only, and do not imply that any part or pump listed is the product of Warman® , Metso®, Goulds®, Durco®,Andritz®, and Mission®. Our pump and spare parts interchangeable only.