| 废催化剂焙烧水浸渣中硫酸浸取钴的动力学研究 |
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| 引用本文： | 冯其明,邵延海,欧乐明,张国范,卢毅屏.废催化剂焙烧水浸渣中硫酸浸取钴的动力学研究[J].中南大学学报(自然科学版),2010,41(1). |
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| 作者姓名： | 冯其明 邵延海 欧乐明 张国范 卢毅屏 |
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| 作者单位： | 中南大学,资源加工与生物工程学院,湖南,长沙,410083 |
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| 摘 要： | 以废催化剂处理过程中得到的镍钴渣为研究对象,采用硫酸浸出镍钴渣,使钴和镍得到有效回收,并对硫酸浸出钴的动力学进行探讨。研究结果表明:搅拌速度为400～1200r/min时对钴浸出率的影响非常小,物料粒度、硫酸浓度和反应温度等因素对钴浸出率则有较大影响;当反应温度为80℃,反应时间为180min,原料粒度为(0.074～0.100)mm,H2SO4浓度为6mol/L,搅拌速度为800r/min,固液比为1:10时,钴的浸出率为94.2%,镍的浸出率则为93.5%;硫酸浸出镍钴渣的反应受产物层内扩散控制,表观活化能为16.34kJ/mol。
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| 关 键 词： | 废催化剂 钴 硫酸 浸出 动力学 |
Leaching kinetics of cobalt from roasting-dissolving residue of spent catalyst with sulfuric acid |
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| FENG Qi-ming,SHAO Yan-hai,OU Le-ming,ZHANG Guo-fan,LU Yi-ping.Leaching kinetics of cobalt from roasting-dissolving residue of spent catalyst with sulfuric acid[J].Journal of Central South University:Science and Technology,2010,41(1). |
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| Authors: | FENG Qi-ming SHAO Yan-hai OU Le-ming ZHANG Guo-fan LU Yi-ping |
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| Affiliation: | FENG Qi-ming,SHAO Yan-hai,OU Le-ming,ZHANG Guo-fan,LU Yi-ping(School of Resource Processing , Bioengineering,Central South University,Changsha 410083,China) |
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| Abstract: | The leaching kinetics of cobalt from roasting-dissolving residue (Ni-Co concentrate) of a spent catalyst was investigated. The results indicate that the extraction of cobalt from Ni-Co concentrate with sulfuric acid leaching is determined by particle size, sulfuric acid concentration and reaction temperature, while stirring speed in the range of 4001200 r/min shows a negligible effect on extraction of cobalt. A cobalt recovery of 94.2% and a nickel recovery of 93.5% are achieved by leaching 0.0740.100 mm Ni... |
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| Keywords: | spent catalyst cobalt sulfuric acid leaching kinetics |
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