AS 2489.5-1982

1 - AS 2489.5-1982 METHODS FOR THE ANALYSIS OF ZIRCON SAND CONCENTRATES - DETERMINATION OF ZIRCONIUM PLUS HAFNIUM CONTENT (GRAVIM
2 - PREFACE
3 - 1 SCOPE.
3 - 2 APPLICATION.
3 - 3 PRINCIPLE.
3 - 4 REAGENTS.
3 - 4.1 General.
3 - 4.2 Solid.
3 - 4.3 Solutions.
3 - 5 APPARATUS.
3 - 5.1 Balance.
3 - 5.2 Crucibles.
3 - 5.3 Ordinary laboratory glassware.
3 - 6 SAMPLING AND SAMPLES.
3 - 7 PROCEDURE.
3 - 7.1 Number of Determinations.
3 - 7.2 Test Portion.
3 - 7.3 Blank Test.
3 - 7.4 Check Test.
4 - 7.5 Determination.
4 - 8 CALCULATION OF RESULTS.
4 - 9 REPRODUCIBILITY.
5 - 10 ACCEPTANCE OF ANALYTICAL VALUES.
5 - 11 EXPRESSION OF FINAL RESULT.
5 - 12 TEST REPORT.

Specifies methods for the chemical analysis of zircon sand concentrates by spectrophotometry, atomic absorption, spectrometry and gravimetry.

This standard sets out a gravimetric method for the determination of the zirconium plus hafnium content of zircon sand concentrates.The method is applicable to zircon sand concentrates containing more than 63 percent ZrO2 + HfO2. Niobium does not interfere at the levels experienced.

Reconfirmed 1994
Under Revision see DR 03335 CP