. Transactions. \ f-/ \-/ Fig. 3.—Type 1, 2, akd 3.—Three Types of the Wood Ore-Concexteating Machine. 686 THE WOOD FLOTATION PROCESS. instead of endeavoring to drown them, they were given achance, they would all float. Having successfully demonstrated this fact, as well as anotherequally important, namely, that practically all the oxides arequickly wetted, become saturated like a sponge, and, sinkingunder the surface-film, become subject to gravity-conditions, Icommenced my Fig. 4.—Photographic View of the Wood Oke-ConxextratingMachine, Type C. I found that if dry-crushe
. Transactions. \ f-/ \-/ Fig. 3.—Type 1, 2, akd 3.—Three Types of the Wood Ore-Concexteating Machine. 686 THE WOOD FLOTATION PROCESS. instead of endeavoring to drown them, they were given achance, they would all float. Having successfully demonstrated this fact, as well as anotherequally important, namely, that practically all the oxides arequickly wetted, become saturated like a sponge, and, sinkingunder the surface-film, become subject to gravity-conditions, Icommenced my Fig. 4.—Photographic View of the Wood Oke-ConxextratingMachine, Type C. I found that if dry-crushed ore, not necessarily very fine,was gently deposited upon a swiftly-moving sheet of water,separation of the sulphides from the gangue took place. Re-tarding the current permitted the gangue to sink, while a filmof sulphides remained on the surface. To collect this film I THE WOOD FLOTATION PROCESS. 687 have devised three types of machine, shown in Figs. 1, 2, and3. Fig. 4 is a photographic view of the type C machine. All three types are similar so far as the system of feed isconcerned. In type A, a sectional view of which is presentedin Fig. 1, the unsized ore, at whatever mesh has been decidedupon, and ranging from 10- to 40-mesh or finer, is delivered toa feed-hopper, J., the outlet from which is under close control,so that a uniform amount of ore can be steadily dropped upona plate, B^ vibrating 500 times per minute. From this platethe ore falls direct to the sheet of water, which f
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
