Maximizing Efficiency in Cement Grinding: The Pfeiffer MVR Vertical Mill with MultiDrive?

When it comes to grinding raw materials, cement, and granulated blast-furnace slag, the primary goal is clear: achieve maximum throughput and maintain the highest technical availability. Enter the Gebr. Pfeiffer MVR vertical mill, equipped with the revolutionary MultiDrive? system. This cutting-edge technology ensures unparalleled performance, boasting a drive power of up to 18,000 kW and throughput rates exceeding 1,400 tons per hour on a single mill.

One of the standout features of the Gebr. Pfeiffer MVR vertical mill is its double active redundancy, which ensures optimal productivity and availability. Even if a roller module or drive unit fails, the mill continues to operate at the same or only slightly reduced throughput rate. This unique capability is exclusive to Gebr. Pfeiffer.

As Engineering Investment Co. Ltd (EIC) , we are proud to be the official agents of Gebr. Pfeiffer in the MENA region, bringing this advanced technology closer to our clients and ensuring they benefit from its superior performance.

Working Principle

The Pfeiffer MVR vertical mill operates with up to six stationary grinding rollers that roll on a rotating grinding table. The material is drawn between the rollers and the grinding table, where it is ground by pressure and shear. The necessary pressure forces are generated by a lever system, which includes a roller arm and a hydropneumatic tension system. Once rolled over by the rollers, the material is transported to a stationary nozzle ring due to the rotation of the grinding table.

Gases (air or hot gas) flow through this nozzle ring, lifting the ground and dried material and conveying it to the classifier. Here, the rotating wheel (rotor) separates the material into grits and fines. The grits fall back into the grinding zone, while the fines are carried with the gas flow to be separated in cyclones or a filter.

Key Advantages of the Pfeiffer MVR Vertical Mill

1. Exceptional Throughput Rates With the MultiDrive? system, the Pfeiffer MVR mill can replace two mills equipped with conventional drives, delivering throughput rates of over 1,400 tons per hour on a single mill.
2. Unmatched Availability and Redundancy The MVR mill can have up to six grinding rollers and six drive units. This active redundancy means that one or more rollers can be taken out of service for maintenance without halting mill operation. The same applies to the independent drive modules of the MultiDrive? system.
3. Reliability and Ease of Maintenance High-quality wear materials and sophisticated maintenance concepts significantly reduce maintenance time and costs. The low specific wear rates further enhance reliability and ease of upkeep.
4. Reduced Energy Consumption Pfeiffer roller mills consume up to 40% less electric energy compared to conventional ball mills, offering substantial energy savings.
5. Optimal Utilization of Process Heat The thermal energy from process gases can be effectively used in Pfeiffer roller mills, enhancing overall efficiency.
6. Favorable Control Behavior With high drying capacity, short dwell time of the material to be ground, and remote control of grinding pressure and classifier rotor speed, the MVR mill ensures fully automatic operation even with varying raw material characteristics.
7. Homogeneous Compaction of Materials The grinding rollers’ geometry and specific suspension ensure a parallel grinding gap, resulting in the homogeneous compaction of materials. Additionally, the symmetric shape of the grinding roller tires allows them to be turned when worn, extending their lifespan.

The Pfeiffer MVR vertical mill with MultiDrive? represents a significant leap forward in grinding technology, offering unparalleled efficiency, reliability, and ease of maintenance. Its innovative design and superior performance make it the ideal solution for industries looking to maximize throughput and minimize downtime.

As the trusted agents of Gebr. Pfeiffer in the MENA region, Engineering Investment Co. Ltd (EIC) is dedicated to delivering these cutting-edge solutions to our clients, ensuring they stay ahead in a competitive market.

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