单词 | flotation |
释义 | Word Frequency flotation or floatation (fləʊˈteɪʃən) noun 1. a. the launching or financing of a commercial enterprise by bond or share issues b. the raising of a loan or new capital by bond or share issues 2. power or ability to float; buoyancy 3. Also called: froth flotation a process to concentrate the valuable ore in low-grade ores. The ore is ground to a powder, mixed with water containing surface-active chemicals, and vigorously aerated. The bubbles formed trap the required ore fragments and carry them to the surface froth, which is then skimmed off |
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