【摘要】：研究了褐鐵礦與石英的正浮選分離及鐵離子的影響。結(jié)果表明:油酸鈉是褐鐵礦與石英分離的良好捕收劑,鐵離子對(duì)石英的浮選有強(qiáng)烈活化作用,而對(duì)褐鐵礦可浮性基本無(wú)影響。在pH為7~9范圍內(nèi),六偏磷酸鈉可消除鐵離子對(duì)石英可浮性的影響,而對(duì)褐鐵礦可浮性影響不大。以六偏磷酸鈉為調(diào)整劑,在油酸鈉用量63 mg/L、六偏磷酸鈉用量90 mg/L、pH=8.5的條件下,進(jìn)行褐鐵礦與石英的人工混合礦正浮選分離試驗(yàn),TFe回收率可達(dá)90%以上,且混合原礦的TFe含量由28.64%提高到52%。機(jī)理研究表明:鐵離子使得石英表面電位由負(fù)變?yōu)檎?促進(jìn)了油酸根在石英表面的吸附。六偏磷酸鈉消除鐵離子對(duì)石英的影響是因?yàn)槠渑c鐵離子發(fā)生絡(luò)合作用,消除鐵離子對(duì)石英表面電位的影響。
[Abstract]:The positive flotation separation of limonite and quartz and the effect of iron ions were studied. The results show that sodium oleate is a good collector for the separation of limonite and quartz. Iron ion has a strong activation effect on the flotation of quartz, but has no effect on the floatability of limonite. When pH is 7 鈮，

本文編號(hào)：2479422