FLSmidth Grinders - OK Raw Mill

FLSmidth - Grinders - OK Raw Mill

Supplier: FLSmidth

Grinders - OK Raw Mill

The OK™ Raw Mill is the latest VRM offering from FLSmidth. It is designed with the same proven technology and modular design as the OK cement mill, which has proven to be the most reliable.

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How it works

The OK™ raw mill combines the drying, grinding, material conveying and separation processes into just one unit, which simplifies the plant layout. Its low noise level makes outdoor installation feasible – substantially reducing civil construction costs and improving the working environment.

Key Benefits

Energy-efficient
The OK cement mill uses five to ten percent less energy than other vertical roller mills and 30-50% less energy than ball mill systems. The OK raw mill is based on the same proven technology
High run factor
Operating time availability is typically 90 to 95 percent for the OK cement mill. The OK raw mill is based on the same proven technology
High capacity
The mill is offered in a full size range including the largest VRM sizes available
Operating flexibility
The OK mill achieves 60 to 70 percent of nominal output with half the number of rollers in operation
Easy maintenance
Wear liners can be replaced or rewelded inside the mill or the roller swing-out feature can be used for maintenance work externally from the mill

Design Advantages

The modular design allows for parts commonality with OK cement mill, resulting in reduced spare parts inventory and consistent maintenance practices
The patented grinding profile and integral separator ensure the mill’s energy-efficiency, stability and reliability
Concrete mill stands have faster installation time and reduced cost of installation
Operation with half of the rollers out of service, allows for continued operation at 60-70 percent of nominal output
Simple layout and fewer machines in the mill circuit ensure high run-factor and low maintenance costs
Optimal wear protection on all internal surfaces extends lifetime
Segmented roller wear parts made of the hardest possible material without the risk of cracking; very suitable for hard-facing

How it works

Key Benefits

Energy-efficient
The OK cement mill uses five to ten percent less energy than other vertical roller mills and 30-50% less energy than ball mill systems. The OK raw mill is based on the same proven technology
High run factor
Operating time availability is typically 90 to 95 percent for the OK cement mill. The OK raw mill is based on the same proven technology
High capacity
The mill is offered in a full size range including the largest VRM sizes available
Operating flexibility
The OK mill achieves 60 to 70 percent of nominal output with half the number of rollers in operation
Easy maintenance
Wear liners can be replaced or rewelded inside the mill or the roller swing-out feature can be used for maintenance work externally from the mill

Design Advantages

The modular design allows for parts commonality with OK cement mill, resulting in reduced spare parts inventory and consistent maintenance practices
The patented grinding profile and integral separator ensure the mill’s energy-efficiency, stability and reliability
Concrete mill stands have faster installation time and reduced cost of installation
Operation with half of the rollers out of service, allows for continued operation at 60-70 percent of nominal output
Simple layout and fewer machines in the mill circuit ensure high run-factor and low maintenance costs
Optimal wear protection on all internal surfaces extends lifetime
Segmented roller wear parts made of the hardest possible material without the risk of cracking; very suitable for hard-facing

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