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对五种不同成因磷灰石的浮选行为与表面,溶解速度,油酸钙沉淀和油酸盐吸附量等之间的关系作了系统研究。实验表明,磷灰石的溶解速度,油酸钙沉淀量及充分浮选所需油酸钾浓度都与磷灰石的比表面积有关。 沉积型磷灰石有较大比表面积,在水溶液中溶下较多量ca~(2+)离子,生成较多油酸钙沉淀,充分浮选时需较高油酸钾浓度。 充分浮选时,捕收剂在五种不同磷灰石表面的复盖率看来是相近的,都有油酸钙沉淀生成,这与ca~(2+)离子从磷灰石表面溶下速度及达到一定复盖率时所需的捕收剂浓度有关。
The relationship between the flotation behavior of apatite and its surface, dissolution rate, calcium oleate precipitation and the amount of oleate adsorption was systematically studied. Experiments show that the dissolution rate of apatite, calcium oleate precipitation and the full flotation required concentration of potassium oleate and apatite specific surface area. Sedimentary apatite has a larger specific surface area, dissolving a large amount of ca 2+ ions in aqueous solution to generate more calcium oleate precipitate, and higher potassium oleate concentration is needed for full flotation. Full flotation, collector coverage of the five different apatite surface appears to be similar, all have calcium oleate precipitation, which Ca ~ (2+) ions dissolved from the apatite surface Speed and reach a certain coverage rate required collector concentration.