Investigation of methods for producing reactor-grade zirconium oxide from a zirconium-bearing chloride-sulfate strip liquor solution
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
i


Investigation of methods for producing reactor-grade zirconium oxide from a zirconium-bearing chloride-sulfate strip liquor solution
Filetype[PDF-579.60 KB]


Details:
  • Description:
    "The Bureau of Mines investigated two alternative methods for treating a zirconium-bearing chloride-sulfate strip liquor to obtain reactor-grade zro2. One method involves neutralization with nh3 and the other hydrothermal precipitation. The strip liquor was derived from zircon sand by a Bureau of Mines method for separating zirconium and hafnium via solvent extraction with a Tertiary amine. Neutralization with nh3 to precipitate hydrous zirconium oxide required 0.9 to 1.1 G nh3 per gram of zirconium. The nh3 can be recovered for recycle. Zro2 that met reactor-grade specifications was produced by precipitation with nh3. Hydrothermal precipitation of zro2 from strip liquor required that the solution be maintained at 260 deg c and 680 psi for 10 min and in a noncorrodible pressure vessel. In bench-scale experiments both methods gave zirconium recoveries greater than 99 pct." - NIOSTHTIC-2 NIOSHTIC no. 10003307
  • Document Type:
  • Main Document Checksum:
  • File Type:
  • Supporting Files:
    No Additional Files
No Related Documents.

You May Also Like: