钙化焙烧钒渣选择性浸出钒的方法
翻译：Method for selectively leaching vanadium by calcification roasting vanadium slag
申请号：CN201811150555.9
申请日：2018-09-29
摘要:
本发明涉及钙化焙烧钒渣选择性浸出钒的方法，属于钒渣浸出技术领域。本发明解决的技术问题是钙化焙烧钒渣酸浸选择性不好，导致后续对杂质Mn、Mg的净化工艺复杂、成本高。本发明公开了钙化焙烧钒渣选择性浸出钒的方法，步骤包括在钙化焙烧钒渣熟料中加入水、浸出剂，调节pH值为2.5～4.0，进行浸出，最后将浸出结束后得到的矿浆固液分离，所述浸出剂为氟化物和草酸类物质组成的混合物。本发明钒的浸出率为88～95％，所得含钒浸出液中钒浓度为15～55g/L，锰浓度为0.8～3.2g/L，镁浓度0.1～0.6g/L，浸出液杂质含量低，可直接用于后续沉钒，浸出渣可用于继续提取有价元素或综合利用。
翻译：
The invention relates to a selective vanadium leaching method of calcium roasting vanadium slags, belongs to the technical field of leaching of vanadium slags, and aims to solve the technical problemsof a complex subsequent purification technology for impurities of Mn and Mg and high cost due to poor acid leaching selectivity of calcium roasting vanadium slags. The selective vanadium leaching method of calcium roasting vanadium slags disclosed by the invention comprises the following steps : adding water and a leaching agent to calcium roasting vanadium slag clinker aggregates, regulating thepH value to be 2.5-4.0, performing leaching, and finally performing solid-liquid separation on ore pulp obtained after leaching is completed, wherein the leaching agent is a mixture comprising fluoride and oxalic acid type substances. According to the selective vanadium leaching method disclosed by the invention, the leaching efficiency of vanadium is 88-95%, in obtained vanadium containing leaching liquid, the concentration of the vanadium is 15-55 g/L, the concentration of manganese is 0.8-3.2 g/L, the concentration of magnesium is 0.1-0.6 g/L, the impurity content of the leaching liquid islow, the leaching liquid can be directly used for subsequent vanadium precipitation, and leached slags can be used for continuing extraction of valuable elements or comprehensive utilization.
法律状态
注：本法律状态信息仅供参考，即时准确的法律状态信息须到国家知识产权局办理专利登记簿副本。
2021-10-22
专利权人的姓名或者名称、地址的变更IPC(主分类):C22B7/04变更前 ;专利权人:成都先进金属材料产业技术研究院有限公司 ;地址:610306 四川省成都市中国(四川)自由贸易试验区成都市青白江区城厢镇香岛大道1509号(铁路港大厦A区13楼A1301-1311、1319室)变更后 ;专利权人:成都先进金属材料产业技术研究院股份有限公司 ;地址:610306 四川省成都市中国(四川)自由贸易试验区成都市青白江区城厢镇香岛大道1509号(铁路港大厦A区13楼A1301-1311、1319室);
2019-02-01
实质审查的生效IPC(主分类):C22B 7/04;
主权项:
1.钙化焙烧钒渣选择性浸出钒的方法，其特征在于包括如下步骤：在钙化焙烧钒渣熟料中加入水、浸出剂得到矿浆，调节pH值为2.5～4.0，进行浸出，将浸出结束后得到的矿浆固液分离，得到含钒浸出液和浸出渣，所述浸出剂为氟化物和草酸类物质组成的混合物，草酸类物质为草酸或草酸盐，草酸盐为草酸钠、草酸钾、草酸氢钠及草酸氢钾中的至少一种，钙化焙烧钒渣熟料中以质量百分数计包括V2O5 10～18wt％，MnO 2～10wt％，MgO 1～4wt％。
专利代理机构:
成都虹桥专利事务所(普通合伙) 51124
