Magnetic separator induced roll

High intensity induced-roll magnetic separators, 15 453—454 High intensity sweeteners, 12 38, 41—43 High internal-efficiency structures, 14 844-845... 

Induced fit process, 10 338 Induced-roll magnetic separators, high intensity, 15 453-454 Induced roll separator, 16 639-641 Inductance... 

Separations similar to those obtained with dry induced-roll devices can be obtained with cross-belt separators (Fig. 19-42). These units are built with up to eight poles, each of which can operate at different magnetic-field intensities to allow simultaneous production of different concentrates. However, capacity is low, and installed costs per ton capacity are high compared with induced-roll units. 

The high-intensity dry magnetic separators group may be cited as consisting of induced roll, crossbelt and ring-type separators. 

A variable-speed drive is usually used on the feed and cross-belt drives to exercise control in separator operation, although the speed is not usually changed once the optimum operating condition is established. Feed rates and the selection of the number of magnetic poles are usually determined by preliminary laboratory tests. The mineral types involved in the feed largely determine the number of poles selected. High intensity cross-belt separators are frequendy used in combination with induced-roll or electrostatic separators. 

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