Indonesia: Semen Grobogan has ordered two MVR 5000 C-4 mills for cement grinding and one MVR 5000 R-4 for raw material grinding from Germany’s Gebr. Pfeiffer. The package also includes an MPS 3350 BK mill for grinding lignite. The mills will be set up at Grobogan cement plant near Semarang in Central Java.
The cement mills, each featuring a drive power of 4000kW, will be capable of grinding 190t/hr of Ordinary Portland Cement at 3600 Blaine or PPC at 4000 Blaine. In addition, the mills will be suitable for grinding blast-furnace cements. The MVR 5000 R-4 with a drive power of 4300kW is guaranteed to achieve a capacity of 500t/hr of raw meal ground to a fineness of 12% R 90µm. The lignite to be processed has a high feed moisture (37%), which is typical for Indonesia. The inherent moisture content in the lignite is 14%. The MPS 3350 BK with a drive power of 800kW will dry the material to a surface moisture content of 1% while at the same time grinding it at 50t/hr to a fineness of 15-25 % R 90µm. The order also includes a spare parts package for two-year operation.
The order was placed by the Chinese general contractor Nanjing Kisen. Commissioning of the mills is scheduled for the first half of 2019.