摘要
攀枝花钛原料制备高品质富钛料是我国钛工业可持续发展的重要保障,而盐酸浸出法则是攀枝花钛铁矿制备高品质富钛料的最佳方法之一。早期开发的两大主流盐酸法流程(选冶联合加压工艺和预氧化一流态化常压浸出工艺)存在产品粉化严重及盐酸再生回收利用困难等问题。攀钢自主研发的流态化氧化一流态化还原一流态化常压浸出制备人造金红石工艺路线能有效解决上述问题,但此工艺存在原料粒度过细和富钛产品CaO、SiO_2杂质含量超标问题。采用钛精矿电炉熔炼冶炼钛渣,然后再通过盐酸法处理制备高品质富钛料的工艺可以解决攀枝花钛原料粒度过细问题,但此工艺会导致产品中CaO、SiO_2杂质含量超标和工业化放大困难的问题。通过优化现有选矿工艺,降低原料中的解离硅酸盐脉石,可以有效降低两条工艺路线所得产品的CaO、SiO_2杂质含量。
The preparation of high-quality rich titanium material from Panzhihua titanium raw material is the important guarantee for the sustainable development of titanium industry in China,and the hydrochloric acid leaching rule is one of the best ways.The two major hydrochloric acid processes developed in the early stage(the process of selecting and metallurgical combined pressure and the process of pre-oxidation-fluidized atmospheric pressure leaching)are faced with serious pulverization problem and difficulty to recover hydrochloric acid.However,the process routes of fluidized oxidation-fluidized reduction-fluidized atmospheric leaching to prepare the synthetic rutile can effectively solve the above problems,but this process has the problem of excessive fineness of the particle size of raw material and excessive content of the CaO and SiO2in the product.The titanium concentrate furnace is used for smelting of titanium slag.Then the hydrochloric acid leaching is adopted to prepare high-quality rich titanium material,which can solve the problem of fine particle size of Panzhihua titanium material.This process also has the problem that excessive content of the CaO and SiO2in the product and difficulty in large-capacity commercialization.By optimizing the existing beneficiation process,the silicate vein in the raw material can be effectively reduced and as result the content of CaO and SiO2in the product.
出处
《中国有色冶金》
CAS
2018年第6期49-53,共5页
China Nonferrous Metallurgy
关键词
攀枝花钒钛磁铁矿
富钛料
盐酸浸出
钛精矿
钛渣
Panzhihua vanadium titano-magnetite
rich titanium material
hydrochloric acid leaching
titanium concentrate
titanium slag
