油酸钠及超声预处理对钒钛磁铁矿磨矿的影响研究
Effects of Sodium Oleate and Ultrasonic Pre-treatment on the Grinding of Vanadium-titanomagnetite
周钰沣 1钱功明 2叶青 2令新科 1谢俊1
作者信息
- 1. 武汉科技大学资源与环境工程学院,湖北 武汉 430081
- 2. 武汉科技大学资源与环境工程学院,湖北 武汉 430081;冶金矿产资源高效利用与造块湖北省重点实验室,湖北 武汉 430081
- 折叠
摘要
这是一篇矿物加工工程领域的论文.以攀西钒钛磁铁矿为对象,研究了油酸钠和超声预处理对其磨矿的影响.对磨矿产品的粒度、Zeta电位、矿石形貌、分散情况、表面元素及表面吸附特性等进行测定分析以探究油酸钠和超声预处理对钒钛磁铁矿磨矿的影响规律及作用机理.结果表明:磨矿过程中按 1 000 g/t添加油酸钠时,可使磨矿产品中-0.074 mm粒级产率提高 3.37%;经超声预处理后加油酸钠进行磨矿,可使磨矿产品中-0.074 mm粒级产率提高 4.19%.在磨矿过程中,油酸钠能在钒钛磁铁矿表面产生化学吸附,降低矿物表面硬度.超声预处理能清洁矿物表面,暴露更多的吸附位点,且能将矿物表面的Fe2+部分氧化成Fe3+,有利于油酸钠与矿物的相互作用.由此可见,添加油酸钠和超声预处理能有效提高钒钛磁铁矿的磨矿效率.
Abstract
This is an article in the field of mineral processing engineering.With vanadium-titanomagnetite(VTM)from Panxi as the investigation object,the effects of sodium oleate and ultrasonic pre-treatment on grinding and separation were studied.The particle size,Zeta potential,morphology,dispersion,surface elements and adsorption characteristics of grinding products were measured and analyzed to explore the influence and mechanism of ultrasonicand sodium oleate on grinding process of VTM.The results showed that the yield with size of-0.074 mm of grinding products increased by 3.37%when sodium oleate was added 1 000 g/t.The yield with size of-0.074 mm of grinding products increased by 4.19%after ultrasonic pretreatment and grinding with sodium oleate.In the grinding progress,sodium oleate is chemically adsorbed on the surface of VTM to reduce the mineral surface hardness.Ultrasonic pre-treatment can clean the mineral surface and expose more adsorption sites.Moreover,part of Fe2+on the mineral surface can be oxidized to Fe3+,which is conducive to the adsorption of sodium oleate.It is demonstrated that sodium oleate addition and ultrasonic pre-treatment can effectively improve the grinding efficiency of VTM.
关键词
矿物加工工程/钒钛磁铁矿/油酸钠/超声预处理/磨矿效率/吸附Key words
Mineral processing engineering/Vanadium-titanomagnetite/Sodium oleate/Ultrasonic pre-treatment/Grinding efficiency/Adsorption引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据