The Theory and Practice of Ore Dressing

amount angle angle of friction angle of repose arrangement assay average bearings belt bins Blake bolts boot bottom buckets capacity cent Chalcocite classifier coarse Coeur d'Alene compartment concentrate conveyer copper cost crusher crushing machines crushing plant Crushing Roller depth device diameter discharge elevator equal flat belt flow friction galena gangue grade grains greater grizzlies gyratory Harz head pulley heavy inch increase iron launder length less load machinery magnetic material mesh metal metallurgist middling mill mineral mode motion obtained opening operation particles pieces pipe plate plunger portion pressure quartz rate of feed ratio reduced removed revolutions per minute riffles rock rolls sample sampler screen separation shaft shown in Fig side sizes slope specific gravity spider spout steel stream surface tailing tank tonnage tons trommel undersize vanner velocity vertical weight width Wilfley zinc ΙΟ