AS 2503.5-1989

1 - AS 2503.5-1989 REFRACTORIES AND REFRACTORY MATERIALS - CHEMICAL ANALYSIS - CHROME-BEARING MATERIALS
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE.
6 - 1.2 REFERENCED DOCUMENTS.
6 - 1.3 PRINCIPLE.
7 - 1.4 REPEATABILITY.
7 - 1.5 DEFINITIONS.
7 - 1.5.1 Chrome-alumina refractory
7 - 1.5.2 Chrome-dolomite refractory
7 - 1.5.3 Chromite
7 - 1.5.4 Chrome-magnesite refractory
7 - 1.5.5 Chrome ore
7 - 1.5.6 Chrome refractory
7 - 1.5.7 Chrome-silica refractory
7 - 1.5.8 Chrome-sillimanite refractory
7 - 1.5.9 Magnesiochromite
7 - 1.5.10 Magnesite-chrome refractory
8 - SECTION 2. SAMPLING AND SAMPLE PREPARATION
8 - 2.1 SCOPE OF SECTION.
8 - 2.2 GROSS SAMPLING.
8 - 2.2.1 Shaped materials.
8 - 2.2.2 Bulk or ground materials.
8 - 2.3 PREPARATION OF SAMPLE.
8 - 2.3.1 Crushing.
8 - 2.3.2 Test samples.
9 - SECTION 3. DETERMINATION OF LOSS ON IGNITION
9 - 3.1 SCOPE OF SECTION.
9 - 3.2 APPARATUS.
9 - 3.2.1 Drying oven
9 - 3.2.2 Muffle furnace
9 - 3.2.3 Platinum crucible
9 - 3.2.4 Weighing balance
9 - 3.3 PROCEDURE.
10 - SECTION 4. DETERMINATION OF SILICON
10 - 4.1 SCOPE OF SECTION.
10 - 4.2 REAGENTS.
10 - 4.2.1 General.
10 - 4.2.2 Solid reagents.
10 - 4.2.3 Solutions.
10 - 4.3 APPARATUS.
10 - 4.3.1 Glassware
10 - 4.3.2 Hot water bath
10 - 4.3.3 Platinum dish
10 - 4.3.4 Sintered glass crucible
10 - 4.3.5 Common apparatus.
10 - 4.4 PROCEDURE.
10 - 4.4.1 Blank test.
10 - 4.4.2 Continuity of analysis.
10 - 4.4.3 Determination.
12 - SECTION 5. DETERMINATION OF CHROMIUM
12 - 5.1 SCOPE OF SECTION.
12 - 5.2 REAGENTS.
12 - 5.2.1 Introduction.
12 - 5.2.2 Solid reagents.
12 - 5.2.3 General solutions.
12 - 5.2.4 Standard solutions.
12 - 5.2.5 Indicator-barium diphenylamine sulfonate solution
12 - 5.3 APPARATUS.
12 - 5.4 PROCEDURE.
12 - 5.4.1 Blank test.
12 - 5.4.2 Determination.
13 - SECTION 6. DETERMINATION OF TITANIUM, IRON, ALUMINIUM, MANGANESE, CALCIUM AND MAGNESIUM
13 - 6.1 SCOPE.
13 - 6.2 REAGENTS.
13 - 6.2.1 Introduction.
13 - 6.2.2 Solid reagents.
13 - 6.2.3 General solutions.
14 - 6.2.4 Standard solutions.
14 - 6.2.5 Indicators.
15 - 6.3 APPARATUS.
15 - 6.3.1 Steam bath.
15 - 6.3.2 UV-visible spectrophotometer
15 - 6.3.3 Common apparatus.
15 - 6.4 PROCEDURE.
15 - 6.4.1 Blank test.
15 - 6.4.2 Preparation of test solution (solution A).
16 - 6.4.3 Determination of titanium dioxide.
16 - 6.4.4 Determination of iron as iron(III) oxide.
16 - 6.4.5 Determination of manganese oxide.
16 - 6.4.6 Determination of aluminium oxide.
17 - 6.4.7 Determination of calcium oxide.
18 - 6.4.8 Determination of magnesium oxide.
19 - SECTION 7. DETERMINATION OF SODIUM, POTASSIUM AND LITHIUM OXIDES
19 - 7.1 SCOPE OF SECTION.
19 - 7.2 REAGENTS.
19 - 7.2.1 General.
19 - 7.2.2 Solutions.
19 - 7.3 APPARATUS.
19 - 7.3.1 Flame photometer
19 - 7.3.2 Common apparatus
19 - 7.4 PROCEDURE.
19 - 7.4.1 Preliminary procedures.
19 - 7.4.2 Determination of sodium, potassium and lithium oxides.
20 - SECTION 8. TEST REPORT
21 - APPENDIX A - STANDARDIZATION OF CDTA AND EGTA SOLUTIONS
21 - A1 SCOPE.
21 - A2 REPEATABILITY.
21 - A3 REAGENTS AND SOLUTIONS.
21 - A4 PROCEDURE.
21 - A4.1 Standardization of CDTA against magnesium.
21 - A4.2 Standardization of CDTA against zinc.
22 - A4.3 Standardization of EGTA against calcium.
23 - APPENDIX B - STANDARDIZATION OF AMMONIUM IRON(II) SULFATE SOLUTION
23 - B1 SCOPE.
23 - B2 REPEATABILITY.
23 - B3 REAGENTS AND SOLUTIONS.
23 - B4 PROCEDURE.
24 - APPENDIX C - SCHEME OF ANALYSIS FOR CHROME-BEARING MATERIALS