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— 1— OK Vertical roller mill Main features: OK vertical roller mills use 30%50% less energy than ball mill systems. Simple layout and fewer machines in the mill circuit high runfactor and low maintenance costs. Excellent drying capability when grinding blas t furnace slag or blended cements with wet ponents . Roller and table profile improve operating stability and reliability. Consistent cement quality with easy to adjust quality parameter Special design features for iron removal during slag grinding minimize wear Optimal wearprotection all internal surfaces Spacesaving design reduces civil construction costs Flexibility to operate with two or four rollers guarantees long term availability. Application advantages Proven mercially, the OK mill is the premier roller mill for finish grinding of portland cement, slag and blended cemtrents. With a 30%45% reduction in the energy requirements for cement — 2— grinding and 40%50% for slag as pared with traditional ball mill operations, the OK mill can contribute significantly to your profitability and petitiveness. The design bines the drying, grinding and separation processes into just one unit, thus simplifying the plant lay out. A low noise level makes outdoor installation feasible, substantially reducing civil construction costs and improving the working environment. Because of its highly effe