The OK™ mill - the most reliable and efficient mill for raw and .Jun 7, 2018 . The OK mill has been FL's standard cement vertical roller mill (VRM) since 1993. In 2017, FL also introduced the OK raw mill for raw material gri.cement mill vrm,cement mill vrm,Energy-efficient grinding mill designed for a variety of cement typesJul 10, 2017 . With more than 150 mills sold, the OK™ cement mill has proven to be the most reliable and efficient cement vertical roller mill (VRM) available.
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