微波加热技术在攀西地区含钛物料预处理过程的研究现状

Research status of microwave heating technology in pretreatment process of titanium containing materials in Panxi area

钛是现代工业领域发展所需的战略金属资源,钛工业的技术发展水平关系着国家综合实力。虽然我国攀西地区钛资源丰富,但是钛品位较低,这些含钛物料的生产过程需经过干燥、焙烧等多道火法工序,能耗较高。微波能会高效、选择性加热矿石中的主要金属,产生热应力和表面裂纹,并打破脉石包裹相,从而产生显著的提质降耗效果。近年来,微波加热技术在多种矿石的火法预处理领域应用广泛。综述了微波加热技术在攀西地区低品位含钛物料预处理过程中的应用,尤其是钒钛磁铁矿、钛铁矿、钛精矿的微波电磁特性、微波深度干燥、微波辅助磨矿等典型技术,结果可为相关企业提供理论参考和实验基础。

Titanium is a strategic metal resource for the development of modern industry.The technical development level of the titanium industry is a relationship of national comprehensive strength.Although China has abundant titanium resources,most of the titanium resources belong to vanadium titanomagnetite with low-grade titanium.The production process of these titanium containing materials,it needs multi-channel pyro-treatment processes such as drying and roasting,which cause high energy consumption.Microwaves can efficiently and selectively heat the main metal components of ore.In this process,thermal stress and surface cracks are generated to break the wrapped phase of gangue,resulting in significantly improving quality and reducing consumption.Microwave heating technology has been commonly used in the field of pyro-pretreatment of various ores in recent years.This paper summarizes the application of microwave heating technology in the pretreatment of low-grade titanium containing materials in Panzhihua-Xichang area.In particular,the microwave electromagnetic characteristics of vanadium titanomagnetites,ilmenites and titanium concentrates,microwave deep drying,microwave-assisted grinding,and other typical technologies provide atheoretical references for relevant enterprises and experimental basis.