Leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium peroxodisulfate as oxidant

被引：5
|
作者：
Liu Zhi-xiong [1 ]
Yin Zhou-lan [2 ]
Chen Yi-guang [3 ]
Xiong Li-zhi [3 ]
机构：
[1] Jishou Univ, Coll Phys & Mech & Elect Engn, Jishou 416000, Peoples R China
[2] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China
[3] Jishou Univ, Coll Biol & Environm Sci, Jishou 416000, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2015年 / 22卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Ni-Mo ore; leaching kinetics; molybdenum; oxidant; sodium peroxodisulfate; AIR OXIDATION; EXTRACTION; CONCENTRATE;
D O I：
10.1007/s11771-015-2596-5
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The leaching kinetics of molybdenum from Ni-Mo ore in sulfuric acid solution with sodium peroxodisulfate was studied. The effects including leaching temperature, reaction time, particle size, stirring speed, and concentrations of sulfuric acid and sodium peroxodisulfate were investigated. The leaching process of molybdenum from Ni-Mo ore is controlled by the chemical reaction through the solid layer across the unreacted shrinking core. The apparent activation energy of the leaching of molybdenum is calculated to be 41.0 kJ/mol and the leaching kinetics equation of molybdenum from Ni-Mo ore is expressed as 1-(1-a)(1/3)=3405.7exp[-41030.0/(RT)]t.
引用
收藏
页码：874 / 879
页数：6
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