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研究了用 2 -巯基苯并噻唑 (MBT)、二乙基二硫代磷酸钠 (DTF)和戊基钾黄药 (PAX)优先浮选黄铁矿和金的结果。使用MBT时 ,在pH 4-6金和黄铁矿的可浮性较高。在酸性介质中 ,MBT吸附于金和黄铁矿表面已由傅立叶变换红外光谱 (FTIR)类似于MBT的峰得到证实。相反地 ,DTF对金表面的亲合力低得多 ,DRIFTS(示差红外傅立叶变换光谱 )难以检测到 ,只有DTF浓度高时例外。PAX在金上的吸附使得在低药剂浓度下、较宽的pH范围内产生非常高的可浮性。DRIFTS测量结果说明 ,PAX能在这些颗粒上化学吸附 ,在差示光谱上观测到了双黄药和黄药的红外特征峰。哈里蒙德管浮选试验显示了在氧化条件下使用PAX时 ,金与黄铁矿的分离有一个选择性区域 ,在pH高于 8时 ,黄铁矿的抑制显著增加 ,而金的高回收率则无变化
The results of preferential flotation of pyrite and gold with 2-mercaptobenzothiazole (MBT), sodium diethyldithiophosphate (DTF) and amyl potassium krypton (PAX) were studied. When MBT is used, the floatability at pH 4-6 and pyrite is higher. The adsorption of MBT on gold and pyrite surfaces in acidic media has been demonstrated by Fourier transform infrared spectroscopy (FTIR) similar to that of MBT. Conversely, the affinity of DTF for gold surfaces is much lower, with DRIFTS (Differential Infrared Fourier Transform Spectroscopy) difficult to detect, except when the DTF concentration is high. The adsorption of PAX on gold gives very high buoyancy at a wide pH range at low drug concentrations. DRIFTS measurement results show that PAX can chemically adsorb on these particles, and the infrared characteristic peaks of the xanthogen and the xanthate are observed on the differential optical spectrum. Halimund tube flotation experiments showed that there was a selective area for the separation of gold from pyrite when PAX was used under oxidative conditions and the pyrite inhibition was significantly increased at pH levels above 8, whereas gold recovery No change in rates