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,TiO_2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TiO_2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 be-neficiate, sinter and smelt. Its concentrate is low-grade iron and high TiO_2. The sintering permeability is decreased because granulation capability is worse due to concentrate coarse particle size. The grade of iron 2% about was in-creased by stage-grinding-stage-concentration technology,but TiO_2 was little changed. The strength and metallurgi-cal 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 sin-ter basicity ect.
参考文献
| [1] | 曾钦林;刘伟 .攀钢选矿厂阶磨阶选工艺流程改造与工业试验[J].钢铁,2005,40(zk):89. |
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| [3] | 鞭岩森山昭.冶金反应工程学[M].北京:科学出版社,1981 |
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