硫化镍精矿常压酸浸试验研究  

Experimental Study on Atmospheric Pressure Acid Leaching of Sulfide Nickel Concentrate

作　　者：赵峰 刘三平 王海北 谢铿 张登高 汪胜东 ZHAO Feng;LIU Sanping;WANG Haibei;XIE Keng;ZHANG Denggao;WANG Shengdong(BGRIMM Technology Group,Beijing 100160,China)

机构地区：[1]矿冶科技集团有限公司,北京100160

出　　处：《中国资源综合利用》2024年第6期17-21,共5页China Resources Comprehensive Utilization

基　　金：国家自然科学基金资助项目“硫化矿加压湿法冶金的机理研究”(51434001)。

摘　　要：针对浮选获得的硫化镍精矿,采用常压氯化物-氧气强化硫酸浸出工艺进行处理,研究镍、铜和铁的浸出行为,考察原矿粒度、硫酸用量、浸出温度、通氧量、氯离子浓度、反应时间和液固比等因素的影响,确定硫化镍精矿常压酸浸的最佳工艺条件。结果表明,最佳工艺条件下,原矿粒度小于20 μm的颗粒占比为81.05%,硫酸用量为500 kg/t矿,浸出温度为95 ℃,通氧量为300 mL/(L·min),氯离子浓度为30 g/L,浸出时间为10 h,液固比为5,镍、铜和铁的浸出率分别为95.79%、93.59%和19.04%。For the sulfide nickel concentrate obtained by flotation,the atmospheric pressure chloride-oxygen enhanced sulfuric acid leaching process is adopted for treatment,and the leaching behavior of nickel,copper,and iron is studied,and the effects of factors such as raw ore particle size,sulfuric acid dosage,leaching temperature,oxygen flow rate,chloride ion concentration,reaction time,and liquid-solid ratio are examined to determine the optimal process conditions for atmospheric pressure acid leaching of sulfide nickel concentrate.The results show that under the optimal process conditions,the proportion of particles with original ore particle size less than 20μm is 81.05%,the amount of sulfuric acid used is 500 kg/t of ore,the leaching temperature is 95℃,the oxygen flow rate is 300 mL/(L·min),the chloride ion concentration is 30 g/L,the leaching time is 10 h,the liquid-solid ratio is 5,and the leaching rates of nickel,copper,and iron are 95.79%,93.59%,and 19.04%,respectively.

关 键 词：硫化镍精矿 镍 铜 铁 酸浸 

分 类 号：TF815[冶金工程—有色金属冶金]