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Method for Producing Zirconyl Sulfate Solution from Zircon Sand.
MacDonald-DJ; Guidotti-RA; Henry-HG
MISSING :13 pages
The Bureau of Mines has carried out investigations on a method for producing zirconyl sulfate solution from zircon sand, comprising (1) reacting zircon sand with molten naoh, (2) leaching the resultant fusion frit with water to remove sodium silicate and to convert sodium zirconate to hydrous zirconium oxide, and (3) leaching the hydrous zirconium oxide from unreacted sand with hot, dilute h2so4 to produce crude zirconyl sulfate solution. The following conditions were found to be suitable: reacting 0.6 Kg of naoh per kilogram of zircon sand for 10 min at 600 deg c; leaching the frit with 3 to 4 liters of water per kilogram of solids; leaching the residue with 5.1 Liters of water and 1.25 Liters of 98-pct h2so4 per kilogram of original solids for 10 min at 90 deg c; and filtering or decanting to recover unreacted zircon sand. A preliminary cost estimate is included.
IH; Report of Investigations
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division