1 - AS 2503.4-1987 REFRACTORIES AND REFRACTORY MATERIALS - CHEMICAL ANALYSIS - DOLOMITES AND MAGNESITES
3 - PREFACE
4 - CONTENTS
5 - SECTION 1. SCOPE AND GENERAL
5 - 1.1 SCOPE.
5 - 1.2 APPLICATION.
5 - 1.3 PRINCIPLE.
6 - 1.4 REPEATABILITY.
6 - 1.5 REFERENCED DOCUMENTS.
6 - 1.6 DEFINITIONS.
6 - 1.6.1 Dolomite-magnesite refractory
6 - 1.6.2 Dolomite refractory
6 - 1.6.3 Magnesite-dolomite refractory
6 - 1.6.4 Magnesite refractory
7 - SECTION 2. SAMPLING AND SAMPLE PREPARATION
7 - 2.1 SCOPE OF SECTION.
7 - 2.2 GROSS SAMPLING.
7 - 2.2.1 Shaped materials.
7 - 2.2.2 Bulk or ground materials.
7 - 2.3 PREPARATION OF SAMPLE.
7 - 2.3.1 Crushing.
7 - 2.3.2 Samples for analysis.
8 - SECTION 3. DETERMINATION OF LOSS ON IGNITION
8 - 3.1 SCOPE OF SECTION.
8 - 3.2 APPARATUS.
8 - 3. 2.1 Balance
8 - 3.2.2 Drying oven
8 - 3.2.3 Muffle furnace
8 - 3.2.4 Platinum crucible
8 - 3.3 PROCEDURE.
9 - SECTION 4. DETERMINATION OF SILICON, IRON, TITANIUM, MANGANESE, CHROMIUM, ALUMINIUM, CALCIUM AND MAGNESIUM OXIDES
9 - 4.1 SCOPE OF SECTION.
9 - 4.2 REAGENTS.
9 - 4.2.1 General.
9 - 4.2.2 Solid reagents.
9 - 4.2.3 General solutions and solvents.
10 - 4.2.4 Standard solutions.
11 - 4.2.5 Indicators.
12 - 4.3 APPARATUS.
12 - 4.3.1 Glassware.
12 - 4.3.2 Steam bath.
12 - 4.3.3 UV-Visible spectrophotometer
12 - 4.4 PROCEDURE.
12 - 4.4.1 Blank determination.
12 - 4.4.2 Determination of silicon dioxide.
13 - 4.4.3 Determination of iron as iron(III) oxide.
14 - 4.4.4 Determination of titanium dioxide.
14 - 4.4.5 Determination of manganese oxide.
15 - 4.4.6 Determination of chromium oxide.
16 - 4.4.7 Determination of aluminium oxide.
17 - 4.4.8 Determination of calcium oxide.
17 - 4.4.9 Determination of magnesium oxide.
19 - SECTION 5 DETERMINATION OF SODIUM, POTASSIUM AND LITHIUM OXIDES
19 - 5.1 SCOPE OF SECTION.
19 - 5.2 REAGENTS.
19 - 5.2.1 General.
19 - 5.2.2 Aluminium sulphate, solid.
19 - 5.2.3 Solutions.
19 - 5.3 APPARATUS.
19 - 5.3.1 Flame photometer*.
19 - 5.3.2 Platinum dish fitted with a lid.
19 - 5.4 PROCEDURE.
19 - 5.4.1 Preliminary procedures.
20 - 5.4.2 Determination of sodium, potassium and lithium oxides*.
21 - SECTION 6. DETERMINATION OF BORON IN MAGNESITES
21 - 6.1 SCOPE OF SECTION.
21 - 6.2 REAGENTS.
21 - 6.2.1 General.
21 - 6.2.2 Solutions.
21 - 6.2.3 Standard solutions.
21 - 6.3 APPARATUS.
21 - 6.3.1 Water bath.
21 - 6.4 PROCEDURE.
21 - 6.4.1 Blank determination.
21 - 6.4.2 Solutions for analysis.
22 - 6.4.3 Determination of boron(III) oxide.
23 - SECTION 7. TEST REPORT
24 - APPENDIX A - STANDARDIZATION OF SOLUTIONS
24 - A1 INTRODUCTION.
24 - A2 REPEATABILITY.
24 - A3 REAGENTS AND SOLUTIONS.
24 - A4 PROCEDURE.
24 - A4.1 CDTA against magnesium.
24 - A4.2 EDTA against zinc.
25 - A4.3 EGTA against calcium.
26 - APPENDIX B - SCHEME OF ANALYSIS FOR DOLOMITES AND MAGNESITES
26 - B1 IGNITION LOSS: ANALYSIS FOR SiO2, Fe2O3, MgO, CaO, TiO2, MnO, Cr2O3, Al2O3.
28 - B2 ANALYSIS FOR Na2O, K2O, Li2O.
28 - B3 ANALYSIS FOR B2O3 IN MAGNESITES.