AS 2564-1982

1 - AS 2564-1982 ALUMINIUM ORES - DETERMINATION OF ALUMINIUM, SILICON, IRON, TITANIUM AND PHOSPHORUS CONTENTS - WAVELENGTH DISPE
3 - PREFACE
3 - CONTENTS
4 - 1 SCOPE AND APPLICATION.
4 - 1.1 Scope.
4 - 1.2 Application.
4 - 2 REFERENCED DOCUMENTS.
4 - 3 PRINCIPLE.
4 - 4 REAGENTS AND MATERIALS.
4 - 4.1 General.
4 - 4.2 Silicon dioxide (SiO2)
4 - 4.3 Aluminium oxide (Al2O3)
4 - 4.4 Synthetic Calibration Sample.
5 - 4.5 Flux.
6 - 4.6 Desiccant.
6 - 5 APPARATUS.
6 - 5.1 Crucible.
6 - 5.2 Desiccator.
6 - 5.3 Electric Furnace.
6 - 5.4 Gas Burner.
6 - 5.5 Specimen Press.
6 - 5.6 Plunger and Platen.
6 - 5.7 Hotplates.
6 - 5.3 Annealing Plates.
6 - 5.9 Carborundum Stone.
6 - 5.10 X-ray Fluorescence Spectrometer.
6 - 6 SAMPLING AND SAMPLES.
6 - 7 PREPARATION OF SPECIMENS INCLUDING LOSS ON FUSION DETERMINATION.
6 - 7.1 Check Test Sample.
6 - 7.2 Aluminium Ore Sample.
10 - 7.3 Blank (or Background) Samples.
10 - 7.4 Synthetic Calibration Sample.
10 - 8 X-RAY FLUORESCENCE MEASUREMENT OF SPECIMENS.
10 - 8.1 General Instrumental Conditions.
11 - 8.2 Sample Holders.
11 - 8.3 Monitor Specimen.
11 - 8.4 Measurement Sequence.
11 - 9 PRELIMINARY CHECK AND CALCULATIONS
11 - 9.1 Reproducibility of Loss on Fusion.
11 - 9.2 Acceptability of Background.
12 - 9.3 Correction for Instrumental Drift.
12 - 9.4 Comparison of Duplicate Measurements.
12 - 9.5 Correction for Dead Time Losses.
12 - 9.6 Conversion to Apparent Concentration.
12 - 9.7 Acceptability of Specimens.
13 - 10 CALCULATION OF RESULTS
13 - 10.1 Loss on Fusion.
13 - 10.2 Oxide Components.
15 - 11 GENERAL TREATMENT OF RESULTS.
15 - 11.1 Precision.
15 - 11.2 Acceptance of Analytical Values.
16 - 12 TEST REPORT.
17 - APPENDIX A - PREPARATION OF A MONITOR SPECIMEN
17 - A1 SCOPE.
17 - A2 INTRODUCTION.
17 - A3 PREPARATION OF GLASS FOR MONITOR SPECIMEN.
18 - A4 PREPARATION OF THE MONITOR SPECIMEN.
19 - APPENDIX B - COMPUTER PROGRAM FOR DATA MANIPULATION
19 - B1 SCOPE.
19 - B2 GENERAL.
19 - B3 PROGRAM OPTIONS.
19 - B4 INPUT DATA.
19 - B5 OUTPUT DATA.

Sets out a wavelength dispersive X-ray fluorescence procedure and includes both a computer program for obtaining the results and a statistical evaluation of the method. It is applicable to all normal aluminium ores regardless of mineralogical type.

This standard sets out a method for the determination of the contents of aluminium, silicon, iron, titanium, and phosphorus (expressed as the oxides Al2O3, SiO2, Fe2O3, TiO2, and P2O5) in aluminium ores by wavelength dispersive X-ray fluorescence spectrometry. The method has been designed to cope with the high and variable loss on ignition of aluminium ores.ApplicationThe method is applicable to all normal aluminium ores regardless of mineralogical type.

First published 1982