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Powder Grinding Mill for Stone Powder Making

Date:2017-07-07 09:04

There are many types of powder grinding mill in mining equipment. Such as: Raymond mill, ultra fine powder grinding mill and vertical roller mill and so on. All of these powder grinding mill is high efficiency and good quality. So we can use these types of powder grinding mill to process superfine powder.

Raymond Mill


Model: YGM
Finish Powder Fineness: 425 mesh
Capacity: 20 t/h
Working Principle of Raymond Mill:
Big materials are crushed by a jaw crusher to the required particle sizes, and carried by bucket elevator to the storage hopper, and are fed evenly and continuously by vibrating feeder into the main unit for grinding. The grinded powder is carried by the airflow from the blower to the classifier to be classified. The particles which meet the fineness enter cyclone collector through pipe, and are separated and collected there. They are discharged at the discharging valve to become finished products; the airflow is sucked to the blower by return pipe on the top of the cyclone collector. The whole airflow system is a sealed circulation, and is circulated under positive and negative air pressure.

Ultra Fine Powder Grinding Mill


Model: HGM
Finish Powder Fineness: 3000 mesh
Capacity: 45 t/h
Working Principle of Ultra Fine Powder Grinding Mill:
After crushed by hammer crusher, the large materials become small ones and are sent to the storage hopper by elevator, and then evenly sent to the upper distribution plate of the turn plate by vibrating feeder and sloping feeding pipe. When the grinding mill is at work, the main bearing and each dial are driven by electronic motor through reducer, and all the grinding rollers are rolling in the ring channels driving by dial through plunger. The materials are driven to the edge of the turn plate by the centrifugal force and fall down into the grinding, chambers. The high-pressure air blower constantly inhales air, airflow with crushed materials are brought to classifier whose high-speed impeller will screen the airflow: The unqualified particle size will fall and return to the mill for being reground while the qualified particle size mixed with air will go into the cyclone powder collector. Most of the qualified powders will fall and exit from the discharging valve at the bottom; a small proportion of the fine powders, with airflow, moves to the dust cleaner. The materials from the above two lots are sent by the conveyor to get finished powders packed. In addition, filtered clean air will be emitted from muffler in the end.

Vertical Roller Mill


Model: HRM
Finish Powder Fineness: 4000 mesh
Capacity: 100 t/h
Working Principle of Vertical Roller Mill:
The grinding disc is driving by motor through reducer. The material falls to grind disc from the feed opening. The materials are driven to the edge of the disc by the centrifugal force and crushed into fine powders by rollers. Then, the hot air from the nozzle takes the fine powder to high efficiency classifier.The qualified powder is taken by the air to the powder collector to be collected, while the unqualified powder is sent back for regrinding.

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