某炭质页岩型石煤钒矿焙烧浸出试验研究  

Study on Roasting and Leaching of a Carbonaceous Shale-type Stone Coal Vanadium Ore

作　　者：曾广军 李培佑[2] 贾秀敏[2] 李广[2] 唐宝彬[2] 向秋林[2] ZENG Guangjun;LI Peiyou;JIA Xiumin;LI Guang;TANG Baobin;XIANG Qiulin(Xi'an Lantian Uranium Co.,Ltd.,CNNC,Xi'an 710500,China;Beijing Research Institute of Chemical Engineering and Metallurgy,CNNC,Beijing 101149,China)

机构地区：[1]西安中核蓝天铀业有限公司,陕西西安710500 [2]核工业北京化工冶金研究院,北京101149

出　　处：《铀矿冶》2022年第3期232-237,共6页Uranium Mining and Metallurgy

摘　　要：针对陕西某炭质页岩型石煤钒矿,研究了采用加钙盐氧化焙烧-稀硫酸两段浸出工艺。以CaCO_(3)+CaO+CaCl_(2)的混合钙盐作焙烧添加剂,焙烧添加剂与-0.15 mm矿粉混合制粒后,在950℃下氧化焙烧3 h,焙烧熟料进一步磨细后用稀硫酸常温下两段逆流浸出,V_(2)O_(5)的浸出率大于72%。For a carbonaceous shale-type stone coal vanadium ore in Shanxi,a process of oxidizing roasting by adding calcium salt and two-stage leaching by dilute sulfuric acid was studied.The results show that a mixed calcium salt of CaCO_(3)+CaO+CaCl_(2)was used as roasting additive with vanadium ore granulated to-0.15 mm and then oxidatively roasted at 950℃for 3 hours.The roasted clinker was then finely ground and leached in two stages counter-current leaching with dilute sulfuric acid at room temperature.The leaching rate of vanadium pentoxide is more than 72%.

关 键 词：石煤钒矿 钙盐 氧化焙烧 浸出 

分 类 号：TF841.1[冶金工程—有色金属冶金]