过去的正反浮选工艺具有产出的磷精矿中MgO含量低 ,产品脱水性能好的优点 ,但选矿成本较高 ,直接经济效益不显著 ,为此对“矿浆无需加温”、正浮选作业“无碱”、“无碳酸盐抑制剂”、反浮选“无需添加磷酸”的“四无”正反浮选新工艺进行了研究 ,结果表明 :该新工艺具有技术指标先进 ,选矿成本低的优点 In the past, the pros and cons of flotation process has the advantages of low content of MgO and good dehydration performance of the phosphate concentrate produced, but the beneficiation cost is higher and the direct economic benefit is not significant. Therefore, the “slurry without heating” The new technology of “four noes” forward and reverse flotation with “alkali-free”, “carbonate-free inhibitor” and anti-flotation without adding phosphoric acid was studied. The results showed that the new technology has advanced technology, Benefit of low cost