摘要
以湖北某地经空白焙烧的石煤为对象,研究了含氟助浸剂A对酸浸提钒过程的影响。结果表明,含氟助浸剂中的F-能促进白云母晶体结构中Si—O键及Al—O键的断裂、破坏云母结构、疏通含钒矿物的孔洞,为酸与石英、长石等含硅铝的矿物发生反应提供便利,表现在热力学上就是与白云母发生反应的ΔG降低;宏观上表现为钒浸出率显著提高,试验确定的最佳条件下的钒浸出率为85.37%,比硫酸直接浸钒高28.04个百分点。
Regarding the stone coal roasted without any additive from Hubei province as the research target, the impact of F-contained leaching agent A on acid leaching of vanadium was studied. The results showed that F- in F- contained leaching agent A can break Si--O bond and AI--O bond in muscovite crystal structure, destroy the mica structure, and clear the pores of vanadium-contained minerals, thus providing a convenience for the reaction of acid with silicoaluminophosphate minerals such as quartz and feldspar etc.. ,The addition of F- contained leaching agent can lower the AG of the reaction of muscovite on thermodynamics ; On the view of macroscopic,it can greatly improve the leaching rate of vanadium. Under the optimum conditions, the leaching rate of vanadium reached 85.37% and increased by 28.04%, compared with vanadium leaching directly with sulfuric acid.
出处
《金属矿山》
CAS
北大核心
2013年第1期90-93,共4页
Metal Mine
基金
"十二五"国家科技支撑计划重点项目(编号:2011BAB05B01)
环保部公益性项目(编号:201009013)
关键词
石煤
酸浸
含氟助浸剂
热力学
Stone coal,Acid leaching,F-containing leaching agent,Thermodynamics
