Electro-magnetic Ore Separation

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Hill publishing Company, 1909 - Magnetic separation of ores - 191 pages
 

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Page 138 - Report of the Commission appointed to investigate the Zinc Resources of British Columbia and the conditions affecting their exploitation.
Page 139 - Siderite is usually mixed with from 3 to 5 per cent. of fine coal, or coke, before calcination, to aid in its decomposition and to insure a reducing, or neutral, atmosphere in the furnace : if coal is used it must he of a noncoking variety.
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.

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