| 摘要 |
678,444. Froth flotation; stirrers. DEHN, S. G., (Payne & Co., P. M.). April 20, 1949, No. 10480/49. Classes 82(ii) and 86 An agitator for froth flotation apparatus has a plurality of substantially rigid rods 22 mounted on the end of an impeller shaft 19 and diverging in conical arrangement, the device being arranged to rotate within a conical shroud or around a coaxial conical projection 23 fixed in the flotation cell.
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