The Mechanism and Effect of Calcite on the Depressing Effect of Sodium Phosphate in the Scheelite Flotation
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摘要:
通过浮选试验和浮选溶液化学计算研究了白钨矿浮选过程中方解石对磷酸钠性能的影响以及作用机制。结果表明，磷酸钠对白钨矿的抑制作用较弱，浮选体系中添加碳酸根离子后基本不影响磷酸钠的抑制性能，而方解石和钙离子可强化磷酸钠对白钨矿的抑制作用。方解石溶解产生的钙离子浓度大于白钨矿，且方解石加入白钨矿浮选体系后提高了溶液中钙离子浓度，进而强化了磷酸钠对白钨矿抑制作用。
Abstract:The mechanism and effect of sodium phosphate in scheelite flotation was investigated through flotation tests and flotation solution calculation. The results indicate that sodium phosphate cannot depress scheelite flotation, and the addition of sodium carboante cannot effect the performance of sodium phosphate. However, the addition of calcite and calcium ions can strengthen the depressing effect of sodium phosphate on scheelite flotation. The solubility of calcite was higher than that of scheelite, and the addition of calcite increased the calcium ions concentration of scheelite solution, hence the depressing effect of sodium phosphate on scheelite flotation can be strengthened.
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Key words:
- scheelite /
- calcite /
- sodium phosphate /
- flotation /
- calcium ions
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