Metso dry drum separators have been developed mainly for dry separation of ferromagnetic ores with particle sizes finer than 20 mm. In addition to this conventional application, the dry drum separator has found a wide range of other applications such as: • Iron and steel slag treatment • Reduced pyrite ash separation • Calcined ilmenite production • Metal powder production • Supergrade magnetic concentrate production • Removal of ferromagnetic particles prior to highintesity magnetic separation • Control of iron contamination in glass sand production. Efficient separation can be obtained with particle sizes in the range of 0.01 to 25 mm. By utilizing separators with different drum speeds, it is often possible to obtain a high grade concentrate with middlings and tailings as separate products. Often, dry magnetic separation can be more flexible than conventional wet magnetic separation and can provide large savings in grinding costs by recovering the valuable minerals at an early process stage.