云南某闪锌矿氧压酸浸工艺研究  

Technical Study on Acid Pressure Leaching of one Sphalerite in Yunnan

作　　者：周先超 周娴 ZHOU Xian-chao;ZHOU Xian(Yunnan Yongchang Lead and Zinc Co.,Ltd.,Baoshan,Yunnan 678307,China;Kunming Metallurgical Research Institute Co.,Ltd.,Kunming,Yunnan 650031,China)

机构地区：[1]云南永昌铅锌股份有限公司,云南保山678307 [2]昆明冶金研究院有限公司,云南昆明650031

出　　处：《云南冶金》2022年第1期86-90,共5页Yunnan Metallurgy

基　　金：复杂有色金属资源清洁利用国家重点实验室开放基金(CNMRCUKFZO)。

摘　　要：针对云南省某复杂低品位闪锌矿进行氧压浸出试验研究。研究了始酸浓度、反应温度、高浸液和配矿情况对锌浸出率、浸出渣含锌的影响。结果表明,优化试验条件为液固比5∶1、添加剂用量为矿量的0.3%、反应温度130℃、反应时间90 min、氧压1.2 MPa、转速500 r/min、粒度-0.0469 mm(≥75%)、前液配入常压高浸液含Fe量(2~3)g/L,最终的锌浸出率达96.5%,终点酸度(20.0~26.0)g/L,铁浓度6 g/L,浸出渣中含锌小于1.7%。One complex low grade sphalerite in Yunnan was studied through acid pressure leaching process.It is studied the effect of initial acid concentration,reaction temperature,high leaching liquid and ore blending on zinc leaching rate,zinc content of leaching residues.The results show,the optimal test conditions are:the liquid-to-solid ratio is 5∶1,additive agent dosage is 0.30%of ore volume,the reaction temperature is 130℃,the reaction time is 90 min,the oxygen pressure is 1.2 MPa,the rotating speed is 500 r/min,the particle size is-0.0469 mm(≥75%),the Fe content of the mixed liquid that the pre-liquid and the high leaching liquid under atmospheric pressure is(2~3)g/L,the final zinc leaching rate can reach to 96.5%,the end point acidity is(20.0~26.0)g/L,the iron concentration is 6 g/L,the zinc content in leaching residues is less than 1.7%.

关 键 词：闪锌矿 低品位 氧压酸浸 锌浸出率 难溶锌 

分 类 号：TF813[冶金工程—有色金属冶金] TF803.21