摘要
通过人工混合矿和实际矿石分选实验探讨了N-十二烷基乙二胺(ND)在赤铁矿反浮选中的应用情况.实验结果表明,ND对赤铁矿和石英质量比为1∶1和3∶2的人工混合矿均具有一定的分选能力.在矿浆pH值为7.27、淀粉的质量浓度为3.33 mg/L、捕收剂的质量浓度为40 mg/L时,可获得铁的质量分数为60.36%和61.20%的铁精矿.实际矿石分选实验结果表明,在常温下,当低于0.045 mm的磨矿细度占95.42%,ND用量为200 g/t、NaOH用量为400 g/t、淀粉用量200 g/t时,经一次粗选、一次精选、两次扫选可获得铁的质量分数为66.72%、铁回收率为93.46%的铁精矿.
Use of N-dodecylethylenediamine（ND） in reverse flotation of hematite was investigated for separation of artificially mixed and actual iron ores.ND effectively separated quartz from hematite when the mass ratio of hematite to quartz was 1∶1 and 3∶2.At pulp pH of 7.27,40 mg/L collector and 3.33 mg/L starch yielded product with 60.36% and 61.20% iron,respectively.In room temperature separation trials with actual ore,product containing 66.72% iron and a 93.46% iron recovery were obtained by subjecting iron ore at 95.42%-0.045 mm granularity in the presence of 200 g/t ND,400 g/t sodium hydroxide,and 200 g/t starch to a coarse sorting,a fine sorting,and two scavenging operations.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第4期575-578,共4页
Journal of Northeastern University(Natural Science)
基金
国家科技支撑计划项目(2008BAB32B14
2008BAB31B03)
