石煤选矿钒精矿中钒的湿法浸出工艺研究
Research on Wet Leaching Technology of Vanadium from Vanadium Concentrate in Stone Coal Mineral Processing
何文洁 1刘三平1
作者信息
- 1. 矿冶科技集团有限公司,北京 100160
- 折叠
摘要
试验采用碱法焙烧-碱浸提钒法对钒精矿中的钒进行浸出.结果表明,钒精矿的焙烧过程采用NaCl+Na2CO3 作为添加剂,温度对钒精矿焙烧效果影响较大.温度为 750℃时,钒浸出率可达 84.05%.添加剂用量对钒精矿焙烧效果有一定影响,当添加剂NaCl用量为 200 kg/t精矿,Na2CO3 用量为 200 kg/t精矿时,钒浸出率可达 81.31%.提高焙砂浸出温度,有利于钒的浸出.焙砂采用碳酸钠溶液浸出,有利于提高钒浸出率.Na2CO3 浓度为 1 mol/L时,钒浸出率可超过 80%.
Abstract
The experiment adopts the alkaline roasting alkaline leaching vanadium method to leach vanadium from vanadium concentrate.The results indicate that the roasting process of vanadium concentrate uses NaCl+Na2CO3 as additives,and temperature has a significant impact on the roasting effect of vanadium concentrate.At a temperature of 750℃,the vanadium leaching rate can reach 84.05%.The dosage of additives has a certain impact on the roasting effect of vanadium concentrate,when the dosage of NaCl additives is 200 kg/t of concentrate and Na2CO3 is 200 kg/t of concentrate,the vanadium leaching rate can reach 81.31%.Raising the leaching temperature of calcined sand is beneficial for the leaching of vanadium.The use of sodium carbonate solution for leaching of calcined sand is beneficial for improving the vanadium leaching rate.When the concentration of Na2CO3 is 1 mol/L,the vanadium leaching rate can exceed 80%.
关键词
钒精矿/钒/湿法浸出/碱焙烧Key words
vanadium concentrate/vanadium/wet leaching/alkaline roasting引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据