摘要
为充分利用高磷铁矿,进行了微波作用髙磷鲕状赤铁矿煤基碳热还原提铁脱磷的研究。高磷铁矿经微波作用碳热还原、细磨和磁选,其脱磷率达到87.8%,收铁率达到90%。本文从晶格能、热力学和动力学方面分析了微波强化高磷铁矿提铁脱磷的作用机理,探讨了微波应用于高磷铁矿提铁脱磷的可能性。结果表明:微波可以加快铁矿石碳热还原反应速率,强化提铁脱磷效果。
In order to make full use of high-phosphorus iron ore,a research on raising the grade of iron ore and dephosphorization for high-phosphorus oolitic hematite by coal-based carbothermal reduction in microwave field was carried out.The dephosphorization rate and iron yield of high-phosphorus oolitic hematite reach 87.8% and 90% by the way of carbothermal reduction in the microwave field and a further fine-grinding and magnetic separation.The mechanism of action of microwave and iron ore was studied from the aspects of ionic crystal lattice energy and thermodynamics and dynamics.The possibility of the application of microwave in raising the grade of iron ore and dephosphorization for high-phosphorus oolitic hematite was studied.Microwave can speed up the rate of carbothermal reduction of iron ore and strengthen the effects of dephosphorization and raising the grade of iron.
出处
《甘肃冶金》
2011年第1期1-3,7,共4页
Gansu Metallurgy
关键词
微波
高磷铁矿
晶格能
热力学
动力学
microwave
high-phosphorus hematite
lattice energy
thermodynamics
dynamics
