Journal
RARE METALS
Volume 31, Issue 5, Pages 517-522Publisher
NONFERROUS METALS SOC CHINA
DOI: 10.1007/s12598-012-0550-3
Keywords
single-phase ammonium dimolybdate; combination process; crystallization rate; phase composition; total molybdenum recovery
Funding
- National Natural Science Foundation of China [51072233]
Ask authors/readers for more resources
A novel method for the preparation of single-phase ammonium dimolybdate with industrial ammonium molybdate was studied. Various influential factors were evaluated in the paper, including reaction temperature, reaction time, initial molybdenum concentration, initial NH3/Mo molar ratio, and stirring speed. Under the optimum experimental conditions, the crystallization rate of product is 85.23%. The X-ray diffraction (XRD) analysis and chemical analysis show that the product is single-phase ammonium dimolybdate, and no impurity phases exist. The scanning electronic microscope (SEM) image reveals uniform particle size, good particle dispersion, and no agglomeration between particles. Meanwhile, the final pH value of acidification was investigated. The total molybdenum recovery can reach up to 99.40%, and the main phases of acidification product are the same as those of raw material with the final pH value of 1.5. This determines that the acidification product can be used as a raw material to produce single-phase ammonium dimolybdate.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available