Main features of SM series grinding

Simple grinding process: compact layout, high system operation rate. Set crushing, drying, grinding, grading transport in one, covering an area of about 50% of the ball mill system, and can be arranged in the open air, construction costs reduced by about 70%.

3. Low power consumption: high grinding efficiency, using grinding roller to directly crush materials by rotating on the grinding disc, small running resistance, low energy consumption, driving power is half of the conventional vertical grinding, saving 40% ~ 50% of energy consumption, greatly reducing the running cost.

Metal abrasion: because the work of the grinding roller is not in direct contact with the grinding disc, and grinding roller and lining plate made of high-quality wear-resistant materials, so long service life, less wear.

Strong drying ability: hot air in the mill directly in contact with the material, strong drying ability, energy saving, by adjusting the temperature of hot air, can meet the requirements of different humidity materials.

High pressure and low speed bed grinding, low noise, system sealing operation, no pollution, good working environment.

[description of the grinding structure of SM series]

High pressure grinding roller, low speed rolling, grinding roller pressure is 1.5 ~ 2 times of the conventional grinding roller, grinding efficiency is higher.

Grinding structure is more reasonable, stationary grinding disc, grinding roller rotation at the same time high pressure rotation, grinding principle is more in line with modern grinding theory.

Easy to operate and reliable, equipped with automatic control system, remote control can be achieved, easy to operate.

It is equipped with the device to prevent the direct contact between the roller sleeve and the liner plate of the grinding disc, to avoid the destructive impact and violent vibration and realize no-load start.

3. There is a uniform distributing device in the grinding room, which can form a uniform and stable material bed on the grinding disc, and timely discharge iron impurities in the grinding.

The product quality is stable, the material stays in the mill for a short time, easy to detect and control the product particle size and chemical composition, reduce repeated grinding, stable product quality. Integration of high efficiency eddy current separator, sensitive fineness adjustment, reasonable particle size distribution, high round coefficient of cement particles, increase the strength of cement of each age by 10%.

Convenient maintenance, through the maintenance of the oil cylinder, turn the arm, replace the roller sleeve, lining board is convenient and fast, reduce the downtime.

[grinding parameters of SM series]

【典型工艺】

Grinding technology of slag and clinker (excluding iron)

Process flow:

After compaction of the powder after being high-speed airflow blows in the eddy current classification is sorting, fine powder by airflow to uniformly distributed around four cyclone collection, after the meal along the pipeline slipped to the ground, after locking the wind valve into the bottom of the pipeline in addition to iron, the iron remover isolated iron impurities is being exhausted from port discharge, the rest material into the elevator, and feed mill for grinding.

Closed circuit final grinding process

Process flow:

Material by the lock feeder feeding roller mill wind, central into a millstone, in cloth device, under the action of the material to the mill edge, in the grinding zone by high-pressure grinding, grinding materials after high pressure fan on the edge of the mill produced by high-speed airflow blows, larger particles directly into a millstone to grinding, most of the powder by air flow to the vortex classifier for the thickness sorting, meal after meal cones and isolated from the blanking tube to fall to carry on the grinding mill, qualified fine powder with airflow into the cyclone separator of uniformly distributed around is collected, is the finished product, clean air into the high pressure fan cycle.

Process features:

The whole grinding system is simple in process and compact in structure. It integrates grinding, sorting and collection. It covers a small area.

Parallel grinding process

Process flow:

The difference between the parallel grinding process and the closed-circuit final grinding process is that the medium and coarse powder separated by the powder separator does not return to the grinding disc, but is sent out of the mill by the sliding tube and the air lock device, and sent to the follow-up ball mill by the conveyor for grinding. The finished products after vertical grinding and ball grinding are mixed evenly into finished products by the mixing equipment.

Process features:

After the vertical grinding, it needs to add a billiard ball grinding equipment, which will increase the initial equipment investment and increase the floor area by 50%, but the spherical coefficient of finished cement particles will increase, and the cement water demand can be reduced.

Series milling process

After the materials are fed into the vertical mill through the locking air feeder, they enter the high-pressure grinding area. The crushed materials are blown up on the edge of the grinding disc by the high-speed airflow, and the large particles fall directly onto the grinding disc for re-grinding. Most of the powder materials are carried by the airflow to the eddy current separator for coarse and fine separation, and the separated "coarse powder" falls back to the grinding disc for re-grinding. Adjust the spindle speed of the separator to control most fine powder particles in the range of 60 ~ 200 m.