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从分析Fe~(3+)—H_3PO_4—H_2O、Ca~(2+)—H_3PO_4—H_2O、Mg~(2+)—H_3PO_4—H_2O、Ca~(2+)—H_2CO_3—H_3PO_4—H_2O、Mg~(2+)—H_2CO_3—H_3PO_4—H_2O、Ca~(2+)—H_2CO_3—H_2O、Mg~(2+)—H_2CO_3—H_2O、Ca~(2+)—Mg~(2+)—H_2CO_3—H_2O等体系的热力学平衡出发,以较新的平衡常数,自由能等数据为依据,讨论了溶液—矿物(纯化学组成)的溶解、吸附现象。考虑到空气中CO_2对矿物溶解和吸附特性的影响,提出以“金属离子—络合配体”的方法增大矿物表面性质差异实现胶磷矿和白云石的浮选分离。
The effects of Fe ~ (3 +) - H_3PO_4-H_2O, Ca ~ (2 +) - H_3PO_4-H_2O, Mg ~ (2 +) - H_3PO_4-H_2O, Ca ~ (2 +) - H_2CO_3-H_3PO_4-H_2O, (2 +) - H_2CO_3-H_3PO_4-H_2O, Ca ~ (2 +) - H_2CO_3-H_2O, Mg ~ (2 +) - H_2CO_3-H_2O, Ca ~ (2 +) - Mg ~ (2 +) - H_2CO_3-H_2O Based on the newer equilibrium constants, free energies and other data, the dissolution and adsorption phenomena of solution-minerals (pure chemical composition) are discussed. Considering the influence of CO 2 in the air on the dissolution and adsorption characteristics of minerals, we propose to increase the flotation separation between the phosphate rock and the dolomite by using the “metal ion - complex ligand” method to increase the difference in mineral surface properties.