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24 hours amperes apatite arators armature assays attracted ball mills belt conveyor beneath briquetting Broken Hill bucket elevator calcined capacity cassiterite cent centrate chalcopyrite clean Cleveland-Knowles coarse concentrate carries consists conveyor belt crushed to pass crusher cylinder delivered diameter discharge drum dryer dust electro-magnet employed feebly magnetic galena gangue garnet Grondal Type hematite Humboldt-Wetherill separator iron jigs launder leucite limonite lines of force magnetic blende magnetic concentrate magnetic field magnetic minerals magnetic oxide magnetic particles magnetic product magnetic separation magnetite marcasite material Mechernich mesh metric tons middling product Mining monazite nonmagnetic product operation oversize permeability phosphorus plant plate pole pieces primary magnet product carrying pyrite pyrrhotite quartz removed revolution revolving rhodonite rolls screen separating zone siderite sizes slime strongly magnetic sulphide sulphur Sweden tailing product tons per hour treated treatment trommel Type V separator volts Wenstrom Wetherill Wetherill-Rowand wolframite zinc concentrate
Page 138 - Report of the Commission appointed to investigate the Zinc Resources of British Columbia and the conditions affecting their exploitation.
Page 86 - ... per cent. The New Bed and Harmony ores are low in phosphorus and vary in iron from 40 to 69 per cent. All of the above ores have a more or less coarse crystalline structure, that admits of easy disintegration and consequently very efficient concentration...
Page 63 - I labours # and + the + wfirds + mfive + slow # we see three primary stresses together. Allophonically, the second is stronger than the first, and the third stronger than the second, regardless of the fact that the second primary is at pitch 3. and the third at pitch 1 . The pitch phenomena here serve only to heighten, or 'accentuate', the 'primariness' of 'too', since a sudden fall is no less emphatic than a sudden rise.