组合捕收剂在赤铁矿常温反浮选中的应用

Applied Research of Mixed Collectors in Hematite Reverse Flotation at Normal Temperature

脂肪酸类捕收剂(LTS)反浮选赤铁矿存在矿浆需加温的问题,将非离子型表面活性剂CW-1和CW-2、阴离子型表面活性剂CW-3和CW-4分别与LTS组合使用,拟通过药剂复配来降低浮选温度、提高反浮选指标。石英单矿物浮选试验结果表明:在温度为10℃,矿浆p H值为12时,分别以CW-3和LTS(用量为40+40 mg/L)、CW-4和LTS(用量为90+30 mg/L)为捕收剂浮选,石英的回收率分别达到99.44%和94.99%。人工混合矿浮选试验结果表明,10℃下,CW-3和CW-4分别与LTS组合使用时,赤铁矿精矿铁品位均比25℃下单独使用LTS浮选时的指标好;CW-3和LTS组合使用时,赤铁矿精矿铁品位提高了5.41个百分点;CW-4和LTS组合使用时,赤铁矿精矿铁品位提高了2.95个百分点。两种组合捕收剂在赤铁矿常温反浮选中均有较强的捕收能力。

Fatty acid collector（ LTS） reverse floating hematite has problems of need slurry heating,to decrease flotation temperature and improve hematite flotation index by medicament combination,nonionic surfactant CW-1 and CW-2,anionic surfactants CW-3 and CW-4 was respectively combined with LTS. Monomineral quartz flotation experiment results indicated that,at the temperature of 10 ℃,the slurry p H value is 12,using CW-3 and LTS（ dosage is 40＋40 mg / L）,CW-4 and LTS（ 90＋30 mg /L） as collector,quartz recovery rate was 99. 44% and 94. 99%,respectively. Artificial mixed ore flotation experiment results indicated that,at 10 ℃,CW-3 and CW-4 respectively combined with LTS,hematite concentrate iron grade is higher than that of using LTS alone at 25 ℃. When CW-3 and LTS combination,hematite concentrate iron grade is increased by 5. 41 percentage points; When CW-4 and LTS combination,hematite concentrate iron grade increased by 2. 95 percentage points. Both of the two kind combination collector have intensity collecting ability in hematite reverse flotation at normal temperature.