预先脱泥对晋宁磷矿浮选的影响

Industrial Minerals & Processing(2016)

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Abstract
矿泥是选矿过程中影响筛分、破碎、磨矿及浮选的主要有害因素.晋宁磷矿原矿P2 O5品位为18.17%,MgO质量分数为4.34%,SiO2质量分数为26.61%.原矿脱除-0.025 mm级别的微细粒矿泥可使原矿P2 O5品位提高1.14%,为19.31%,倍半氧化物(R2O3)可降低0.65%,为3.00%.通过未脱泥原矿与脱泥原矿浮选对比试验,脱泥原矿浮选指标均好于未脱泥原矿,且泡沫流动性好,浮选捕收剂用量较未脱泥原矿少20%左右.因此,晋宁磷矿脱除-0.025 mm粒级矿泥后再浮选是可行的,既可以提高选矿指标又可以有效降低选矿成本.
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