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浮选药剂在黏土矿中基础矿物的选矿中表现出复杂的行为.利用中心组合设计法研究浮选药剂对低品位高黏质硫化物矿中铜浮选效率的交互作用.初步结果表明,在石灰作pH调节剂的情况下,异丙基黄原酸钠(SIPX)和O-异丙基-N-乙基硫基氨基甲酸酯(IPETC)是最有效的捕收剂.在不同的pH值下,评估捕收剂(SIPX和IPETC)用量和起泡剂甲基异丁基甲醇(MIBC)用量对分离效率的影响.基于方差分析(ANOVA)结果,对于分离效率而言,捕收剂用量与pH值以及捕收剂用量与起泡剂用量之间的交互作用显著.在低捕收剂用量时,pH值从9提高到11可使IPETC的铜分离效率从81％提高到86％,SIPX的铜分离效率从77％提高到86％.方差分析结果表明,在pH值11、8.6 g/t SIPX、7 g/t IPETC和20 g/t MIBC的条件下,铜分离效率最高(88.7％).最终,可得出结论,捕收剂SIPX和IPETC更适合于处理高黏质硫化矿.“,”Flotation reagents have a complex behaviour in the beneficiation of base minerals in clayey ores. Interaction effects of reagents on the efficiency of copper flotation for a highly clayey low-grade sulphide ore were investigated using a central composite design. Preliminary results showed that sodium-isopropyl-xanthate (SIPX) and O-isopropyl-N-ethyl-thionocarbamate (IPETC) were found to be the most efficient collectors in the presence of lime as the pH regulator. The effects of dosage of collectors (SIPX and IPETC) and the dosage of methyl-isobutyl-carbonyl (MIBC) as frother on the separation efficiency were evaluated at different pH levels. Based on the analysis of variance (ANOVA), the interaction effects of the collector?pH and collector?frother were significant for the separation efficiency. At the low level of collector dosage, increasing pH from 9 to 11 enhanced copper separation efficiency from 81％ to 86％ for IPETC and from 77％ to 86％ for SIPX. Results of ANOVA showed that the maximum copper separation efficiency (88.7％) was obtained at the dosages of 8.6 g/t SIPX, 7 g/t IPETC and 20 g/t MIBC at pH 11. Finally, it was concluded that a mixture of SIPX and IPETC collectors was more suitable to treat highly clayey sulphide ores.