Matters needing attention of vertical roller mill

what is a vertical roller mill

Vertical Roller mill is also an air swept mill, ventilation should be appropriate. Insufficient wind, qualified raw material can not be brought out, the material layer thickness, increase the amount of slag, equipment load is high, lower yields; the wind is too large, the material layer is too thin, the impact of the mill stable operation

Therefore, a certain amount of ventilation to match the mill and yield, not large, sometimes small, should remain stable. In principle, the ventilation rate selected by the operator, should be more conducive to maintaining relative stability prevail mill load, and seeks to minimize vibration, slagging least expected, the highest yield and best quality. In actual operation, the operator fan speed according to trends, current, pressure, volume of feed, import and export of negative pressure, temperature and other variables, to understand the operation of the mill, combined with the mill vibration, the amount of slag, product quality and other adjustments, typically by adjusting the opening of the circulating fan speed and flap in order to achieve optimum ventilation.

Another important factor is the stable operation of the vertical roller mill material bed stability. Material layer is stable, wind, air pressure and volume of feed to stabilize, or we need to maintain the material thickness by adjusting the air volume and the volume of feed. If you do not adjust in time will cause vibrations increase, the motor load increases or system stop jumping and other issues.

Development of vertical roller mill

Vertical roller mill use and quality advantages

LUM series of vertical roller mill is Shanghai Zenith absorb advanced technology research and development of Europe's large-scale grinding equipment, to make up for the domestic production of medium-sized vertical roller mill blank. Set vertical mill crushing, drying, grinding, separator, conveying in one, with a small footprint, simple technology, high grinding efficiency, low energy consumption, low noise, drying capacity, product fineness is easy to adjust, easy no dust pollution and maintaining reliable operation. Especially in the large grinding process, fully meet customer demand, the main technical and economic indicators have reached the international advanced level. Widely used in metallurgy, electric power, cement, chemicals, ceramics, non-metallic minerals, power plant desulfurization, massive slag grinding raw materials, slag, slag, coal, cement clinker, glass, quartz, limestone and other industries and ultrafine grinding.

Technical data

LUM Ultrafine Vertical Roller Mill
Model LUM1125 LUM1232 LUM1436
Wheel diameter(mm) 1100 1200 1400
Capacity (t/h) 5~12 7~16 8~18
Fineness 400~650Mesh ~D97 ~D97 ~D97
Material Size(mm) <10 < 10 <10
Moisture <3% <3% <3%
Main Motor Power(KW) 250 315 355
Roller(set) 3 3 3
Classifier Motor Power 15 KWx5 15 KWx7 15 KWx7