摘要
针对商洛某低品位金红石精矿,提出了亚熔盐法制备高品质富钛料的技术。该工艺以低品位金红石精矿为原料,分别以氢氧化钠、氢氧化钾作为亚熔盐反应介质,考察了不同亚熔盐反应温度、反应时间和碱矿质量比对富钛料品质的影响。试验结果表明,以氢氧化钠作为亚熔盐反应介质,对于提高富钛料品质效果更明显,金红石精矿中的杂质去除率更高。以氢氧化钠作为亚熔盐为反应介质时的最佳工艺条件为:反应温度240℃,反应时间60min,碱矿质量比0.15∶1。此时,金红石精矿的杂质去除率为77.86%,所得富钛料产品中TiO 2品位为91.37%,比处理前提高了8.33个百分点。
For a low grade rutile concentrate in Shangluo,the technology of producing high quality titanium-rich material with sub-molten salt method is put forward.With low grade rutile concentrate as raw materials,and sodium hydroxide and potassium hydroxide as reaction media,the effects of reaction temperature and reaction time of sub-molten salt and quality ratio of alkali ore on titanium-rich materials are explored.The test results show that with sodium hydroxide as reaction medium of sub-molten salt,it’s more effective to improve the quality of titanium-rich materials,and the rate of impurity removal in rutile concentrate is much higher.The optimum technological conditions for sodium hydroxide as the reaction medium are as follows:reaction temperature is 240℃,reaction time 60min and alkali ore mass ratio 0.15:1.Under this condition,the impurity removal rate of rutile concentrate is 77.86%,and the TiO 2 grade in the obtained titanium-rich product is 91.37%,which improves by 8.33%before treatment.
作者
阎赞
张玲杰
智超
YAN Zan;ZHANG Lingjie;ZHI Chao(College of Chemical Engineering and Modern Materials,Shangluo 726000,China)
出处
《矿业工程》
CAS
2019年第6期48-50,共3页
Mining Engineering
关键词
氢氧化钠
氢氧化钾
亚熔盐
富钛料
sodium hydroxide
potassium hydroxide
sub-molten salt
titanium rich materials
