vertical roller mill principles and advantages

The emergence of vertical mill, creating a new grinding mode to optimize the grinding of the drawbacks, so that the production and processing of efficiency, productivity, and product size have been improved. Therefore, the application now stand mill grinding with different materials, that in the end there is what forces the mill stand, even bring big changes yet? Here's the breakdown of what vertical mill works and advantages.

1, vertical roller mill works.

lum ultrafine vertical roller mill grinding principle: grinding material feeding equipment by air lock disc into the center of rotation, centrifugal force, the material surrounding the disc moves into the grinding roller. Under the action of the roller pressure was crushed. At the same time, the material after grinding is blown at high speed airflow air ring of suspended material drying, powder by hot air into the separator grading, qualified fines collected by the collecting device for the product, substandard the coarse grinding down to the disc again, and so on, to complete the whole process of grinding work and achieve material crushing, drying, grinding, separator integrated operation.

Vertical mill mainly by the separator, roller device, disc apparatus, pressure equipment, part of the reducer, motor, housing and so on. A splitter is a highly efficient, energy-saving separator unit. The roller is used on the material compacted crushed parts. Disc fixed to the output shaft of the reducer, is where the roller compacted material. Pressurizing means is provided for the grinding pressure of the roller mill components, providing sufficient pressure to the pulverized material to the grinding rolls.

2, vertical mill advantage.

(1) the production of significantly reducing investment costs: history of vertical roller mill system process is simple, compact layout, small floor area, covering about 70% of the ball mill system, about 60 percent of building space and can open layout milling system directly reduce investment costs. And vertical mill itself separator, no additional separator and lifting equipment. The grinding dust and gas can be collected directly from the baghouse or electrostatic precipitator.

(2) high efficiency, energy saving and environmental protection: the use of the material layer vertical grinding mill grinding principle of materials, low energy consumption, grinding system power consumption by 20% to 30% lower than the ball, and the increase of raw water, the festival electric effect is more pronounced. Vertical mill and milling system energy saving systems compared to 30% to 40%. Vertical mill does not work in a ball mill ball collide, hit liner metal crash, so little noise, lower than the ball 20 ~ 25dB. In addition, vertical mill fully enclosed system, the system working under negative pressure, no dust, clean environment.

(3) material drying capability: vertical mill hot air transportation of materials, when grinding large water inlet temperature materials can be controlled so that products meet the requirements of the final moisture. In the vertical mill can dry - grinding into the grinding material moisture up to 15% to 20%.

(4) easy operation, easy maintenance: equipped with automatic control system, which enables remote control, easy to operate; through maintenance tank, turn rotating arm can be convenient to replace the roller sleeve, liner, reduce business downtime.

(5) product quality is stable and easy to detect: the chemical composition of the product is stable, homogeneous particle size distribution are conducive to firing. The material in the vertical mill residence time of only 2 ~ 3min, but in a ball mill will have 15 ~ 20min. Therefore, the chemical composition and fineness of the vertical mill products can be quickly determined and corrected.

(6) wear a small, high utilization: As the vertical mill grinding roller and disc operation is no direct contact between the metal, wear, metal consumption per unit of product is usually 5 ~ 10g / t.

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