Research Progress on Recovery of Scandium from Vanadium Titano- Magnetite in Panzhihua
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摘要:
综述了攀枝花钒钛磁铁矿中钪以类质同象置换Mg-Fe的方式存在，储量丰富，潜在回收价值可观。以尾矿、废渣和废液为主要回收对象，总结了提取钪工艺以焙烧-浸出-萃取法和浸出-萃取法为主。提出以钛白废酸浸出选钛尾矿和氯化渣及烟尘全面回收钪的新途径；为攀枝花“三废”治理提供新的思路。
Abstract:Review on the occurrence state of scandium in Panzhihua vanadium titano- magnetite showed as Mg-Fe isomorphism, rich reserves and the recovery of considerable potential value. Taking tailings, waste residue and waste liquid as the main recycled subject, summarized the main technology of Extracting Scandium by roasting leaching extraction and leaching extraction. Presented new ways for comprehensive extraction of scandium from titanium tailings, chlorinated slag and dust by titanium white waste acid leaching. Providing new ideas for treatment of "three wastes" in Panzhihua.
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Key words:
- Scandium /
- Leaching /
- Vanadium titano- magnetite /
- Titanium tailings
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表 1 含钪矿物
Table 1. Scandium among the various types of minerals
名称 含量/% 钪含量/（g·t−1） 钪分布率/% 主要成分 普通辉石 30.58 128 60.0 SiO2 Fe2O3 MgO 钛铁矿
钛磁铁矿15.68
18.30101
24.215.09
6.30Fe2O3 TiO2
Fe2O3 TiO2角闪石 6.50 38.2 6.70 SiO2 CaO 斜长石 5.10 2.0 0.15 SiO2 Al2O3 绿泥石及其他 20.00 15.0 11.80 SiO2 CaO Fe2O3 Al2O3 
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表 2 钪在三废中含量
Table 2. scandium content in three wastes
名称 高炉渣 高炉瓦斯泥 氯化渣 钒渣 氯化烟尘 硫酸废液 尾矿 含量/（g·t−1） 34 12.8 65.8 3.3 384 80.8 128.3 存在形态 Sc2O3 Sc2O3 Sc2O3 Sc2O3 ScCl3 Sc3+ 辉石、钛铁矿和角闪石
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