粗四氯化钛有机物精制除钒尾渣提钒技术

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孙朝晖^1,2*，李明^1,2，高官金^1,2，李良^1,2

1. Pangang Group Research Institute Co., Ltd., Panzhihua, Sichuan 617000, China 2. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua, Sichuan 617000, China

收稿日期:2019-04-15修回日期:2019-05-27出版日期:2019-06-28发布日期:2019-06-10
通讯作者:孙朝晖

Vanadium extraction from vanadium removal tailings of crude titanium tetrachloride organic refining

Zhaohui SUN^1,2*, Ming LI^1,2, Guanjin GAO^1,2, Liang LI^1,2

1. 攀钢集团攀枝花钢铁研究院有限公司，四川攀枝花 617000 2. 钒钛资源综合利用国家重点实验室，四川攀枝花 617000

Received:2019-04-15Revised:2019-05-27Online:2019-06-28Published:2019-06-10

摘要/Abstract

摘要： 从四氯化钛有机物精制除钒尾渣中提钒并制备V2O5产品，研究了精制除钒尾渣焙烧温度、浸出剂加入量、液固比、浸出温度、浸出时间对尾渣中钒转化和溶出率的影响。结果表明，焙烧温度大于600℃时，可高效脱除精制除钒尾渣中的碳和氯(?0.1%)，且低价钒被氧化为高价，钒主要以V2O5形式存在。对焙烧后的尾渣以Na2CO3水溶液为浸出剂，液固比6 mL/g及80℃下浸出60 min，钒浸出率为85.5%，浸出液仅含少量Si, Al, Ti杂质，以NH4+:V=2.5:1(摩尔比)直接加铵盐沉钒，得到NH4VO3，经干燥、煅烧制得V2O5产品，可满足99级粉钒指标要求，全流程钒收率为75%。

引用本文

孙朝晖李明高官金李良. 粗四氯化钛有机物精制除钒尾渣提钒技术[J]. 过程工程学报, 2019, 19(S1): 93-98.
Zhaohui SUN Ming LI Guanjin GAO Liang LI. Vanadium extraction from vanadium removal tailings of crude titanium tetrachloride organic refining[J]. Chin. J. Process Eng., 2019, 19(S1): 93-98.

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