What is the vertical roller mill advantage?

Advantage 1、Small Comprehensive Investment

The equipment integrates the functions of crushing, drying, grinding, powder separating and transportation, featuring simple system and compact layout, with the floor space of about 50% of that of the ball-milling system. And it can be arranged outdoors so as to greatly reduce the investment costs.

Advantage 2、Automatic Control System

The equipment is provided with an expert automatic control system, realizing free switching between remote and local control to achieve easy operation and save labor costs.

Advantage 3、Low Operating Costs

Less wear: The roller does not contact the grinding plate directly and the roller and grinding plate are made of high-quality materials. Therefore, they enjoy longer service life and less wear.

High efficiency: The grinding rollers can directly grind materials on the grinding plate, featuring lower energy consumption (30% ~ 40% lower than that of ball-milling systems).

Advantage 4、High Environmental Protection Standard

The equipment can operate stably with little vibration, so its noise is fairly low.

The system is wholly sealed and works under negative pressure, free of dust spillover and environmentally friendly, with the emission meeting the national standard.

The main motor drives the grinding plate by the reducer, simultaneously the hot air enters the vertical mill body from the air inlet and the materials drop on the grinding plate center from the feed opening and evenly move outwards due to centrifugal force. The materials are ground by grinding rollers when passing through the grinding area on the grinding plate, and large size materials will be directly crushed while the fine materials will form a material bed by extrusion for further inter granular crushing. The crushed materials will continue to move towards the mill edge until being taken away by the strong air flow at the vane and collected by the dust collector, while larger material particles will again fall onto the grinding plate for repeated grinding; the coarse particles in the air flow will drop back onto the grinding plate for further grinding when passing through the upper separator under the action of the rotor blade, with the qualified fine powder flowing out of the grinding plate with the air flow and then collected and discharged by the system powder collector as finished powder product. However, the iron blocks and other wastes mixed in the materials will move along with the materials towards the edge of the grinding plate due to their own weight and fall into the lower chamber and then be discharged out of the slag discharge opening by the scraping plate at the bottom of the mill tray (commonly known as scumming).