摘要
铁精矿中钛杂质含量高会严重影响其经济价值,因此对铁精矿提品降钛具有重要意义。本文以某选厂的高钛铁精矿为研究对象,开展矿石性质分析与浮选降钛中试试验研究。结果表明:高钛铁精矿中金属矿物的质量分数为97.77%,主要包含质量分数为87.88%的(钛)磁铁矿、质量分数为9.62%的钛铁矿;脉石矿物质量分数约为2%,主要为透闪石、石英、长石、黑云母、斜帘石、石榴石等;钛元素在钛铁矿中的分布率为95.91%,在含钛磁铁矿中的分布率为2.63%,该矿石具有实际分选的可能性。通过中试试验模拟连续生产条件下铁精粉的降钛分选指标,试验期间铁精粉的TFe质量分数≥65.0%、TiO_(2)质量分数为4.80%~5.30%,采用浮选机组“一粗三扫”反浮选工艺,以CT09为抑制剂、CT06为捕收剂,可分离出产率约为75%、w(TFe)≥67.5%、w(TiO_(2))为1.5%~1.9%的低钛铁精粉;现有TiO_(2)质量分数为5%的铁精粉反浮选降钛下限为1.3%左右,获得的低钛铁精粉产率约为65%、w(TFe)约为68%,低钛铁精粉销售品级可提高一个等级。本文试验结论可为该类型铁精粉降钛分选提供技术依据。
The high content of titanium impurities in iron concentrate will seriously affect its economic value,so it is of great significance for iron concentrate to improve and reduce titanium.In this paper,the high titanium iron concentrate of a concentrator plant is used as the research object to carry out ore property analysis and pilot test of titanium reduction by flotation.The results show that the mass fraction of metal minerals in high titanium iron concentrate is 97.77%,mainly including(titanium)magnetite with a mass fraction of 87.88%and ilmenite with a mass fraction of 9.62%.The mineral content of gangue is about 2%,mainly tremolite,quartz,feldspar,biotite,epidote,garnet,etc.;The distribution rate of titanium elements in ilmenite is 95.91%and 2.63%in titanium-bearing magnetite,and the ore has the possibility of actual sorting.The titanium reduction sorting index of iron concentrate under continuous production conditions is simulated by pilot tests,the TFe mass fraction of iron concentrate is≥65.0%and the TiO_(2) mass fraction is 4.80%~5.30%during the test;Using the“one coarse and three swepts”reverse flotation process of the flotation unit,with CT09 as the inhibitor and CT06 as the collector,the yield of w(TFe)≥67.5%,and w(TiO_(2))of 1.5%~1.9%can be separated.The lower limit of titanium reduction of iron concentrate with a mass fraction of 5%is about 1.3%,the yield of low-titanium ferroconcentrate obtained is about 65%,and the w(TFe)is about 68%,and the sales grade of low-titanium ferroconcentrate can be increased by one level.The experimental conclusions can provide a technical basis for the separation of this type of iron concentrate and titanium reduction.
作者
张鹏羽
柴壮志
乐文毅
李坛云
赵强
刘玉龙
杨卓
ZHANG Pengyu;CHAI Zhuangzhi;YUE Wenyi;LI Tanyun;ZHAO Qiang;LIU Yulong;YANG Zhuo(Zhongye Changtian International Engineering Co.,Ltd.,Changsha 410025,Hunan,China;Beipiao Hexing Industrial Co.,Ltd.,Chaoyang 122103,Liaoning,China)
出处
《烧结球团》
北大核心
2025年第4期131-140,177,共11页
Sintering and Pelletizing
基金
湖南省科技创新计划资助项目(2022RC1049)。
关键词
高钛铁精矿
反浮选降钛
中试试验
high titanium iron concentrate
titanium reduction by reverse flotation
pilot test
作者简介
张鹏羽(1990-),男,高级工程师,从事选矿工艺等方面的研究。
