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金属矿山 ›› 2016, Vol. 45 ›› Issue (03): 95-97.

• 矿物工程 • 上一篇    下一篇

陕西某风化石煤提钒试验

闫平科,张旭,赵永帅   

  1. 辽宁工程技术大学矿业学院,辽宁 阜新 123000
  • 出版日期:2016-03-15 发布日期:2016-05-17

Test on Vanadium Extraction from Weathering Coal Stone in Shaanxi Province

Yan Pingke,Zhang Xu,Zhao Yongshuai   

  1. School of Mining,Liaoning University of Engineering and Technical,Fuxin 123000,China
  • Online:2016-03-15 Published:2016-05-17

摘要: 陕西某风化石煤含钒1.20%。为高效、低成本提取矿石中的钒,对浓硫酸加温熟化—热水浸钒工艺条件进行了研究。结果表明,粒度为-200目占80%的石煤试样与浓度为98%的浓硫酸按质量比10∶4混匀,在140 ℃下熟化3 h,冷却至室温后按液固比2 mL/g添加自来水,在50 ℃下搅拌(300 r/min)浸出30 min,钒浸出率可达76.10%。试验所采用的工艺指标良好,是该石煤提钒的高效、低成本工艺。

关键词: 风化石煤, 浓硫酸加温熟化, 水浸, 提钒

Abstract: In order to extract vanadium from weathering coal stone in Shaanxi with high efficiency at a low cost,vanadium of which accounts for 1.20%,conditions of sulfuric acid curing and hot water leaching were studied.Results showed that with the mass ratio 10∶4 of mix coal samples with particle size -200 mesh accounting for 80% and 98% concentrated sulfuric acid,then curing at 140 ℃for 3 h,and adding fresh water according to the liquid solid ratio of 2 mL/g after cooling to room temperature,stirring (300 r/min) and leaching for 30 min at 50 ℃,vanadium leaching rate reached 76.10%.Test index is good and it is a high efficiency and low cost process for vanadium extraction from this coal stone.

Key words: Weathering coal stone, Concentrated sulfuric acid curing, Water leaching, Vanadium extraction