摘要
攀枝花钒钛磁铁矿矿物组成复杂,属于难选、难烧、难炼的矿石,其精矿含铁品位低,TiO2含量高,粒度粗,制粒性能差,影响烧结透气性。采用阶磨阶选工艺可提高铁品位2%左右,但TiO2变化不大。该精矿初始熔点高,生成液相量少,烧结矿矿物组成复杂,严重影响强度与冶金性能。烧结采取了使用生石灰、提高烧结矿碱度等主要强化技术,烧结与高炉冶炼取得了重大技术突破。
Vanadium and titanium magnetite is an ores with the complex mineral composition which is difficult to beneficiate, sinter and smelt. Its concentrate is low-grade iron and high TiO2. The sintering permeability is decreased because granulation capability is worse due to concentrate coarse particle size. The grade of iron 2 M about was increased by stage-grinding-stage-concentration technology,but TiO2 was little changed. The strength and metallurgical properties were affected severely as sinter liquid was less and complex mineral composition owing to high initial melting temperature point of concentrate. Sintering and blast furnace smelting of vanadium titanium magnetite have made significant technological breakthrough by main intensification technology with using quicklime, increasing sinter basicity ect.
出处
《钢铁》
CAS
CSCD
北大核心
2010年第1期24-27,42,共5页
Iron and Steel
关键词
钒钛磁铁精矿
矿物特性
烧结特性
造块
强化技术
vanadium and titanium magnetite concentrate
mineral property
sintering characteristic
agglomeration
intensification technology
