AS 2503.3-1985

1 - AS 2503.3-1985 REFRACTORIES AND REFRACTORY MATERIALS - CHEMICAL ANALYSIS - HIGH ALUMINA MATERIALS
3 - PREFACE
4 - CONTENTS
5 - SECTION 1. SCOPE AND GENERAL
5 - 1.1 SCOPE.
5 - 1.2 REFERENCED DOCUMENTS.
5 - 1.3 DEFINITION.
6 - 1.4 REPEATABILITY.
6 - 1.5 PRINCIPLE.
7 - SECTION 2. SAMPLING AND SAMPLE PREPARATION
7 - 2.1 SCOPE OF SECTION.
7 - 2.2 GROSS SAMPLING.
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 Muffle furnace
8 - 3.2.3 Drying oven
8 - 3.3 PROCEDURE.
9 - SECTION 4. DETERMINATION OF SILICON, PHOSPHORUS, ALUMINIUM, IRON( III), TITANIUM, MANGANESE, 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 Solutions.
10 - 4.2.4 Standard solutions.
11 - 4.2.5 Indicators.
11 - 4.3 APPARATUS.
11 - 4.3.1 Steam bath.
11 - 4.3.2 Glassware.
11 - 4.3.3 Platinum dish
11 - 4.3.4 UV-Visible spectrometer
11 - 4.4 PROCEDURE.
11 - 4.4.1 Blank determination.
11 - 4.4.2 Preparation of the sample solution.
11 - 4.4.3 Determination of silicon dioxide.
12 - 4.4.4 Determination of phosphorous pentoxide.
13 - 4.4.5 Determination of aluminium oxide.
13 - 4.4.6 Determination of iron(III) oxide.
14 - 4.4.7 Determination of titanium dioxide.
14 - 4.4.8 Determination of manganese oxide.
15 - 4.4.9 Determination of calcium oxide.
15 - 4.4.10 Determination of magnesium oxide.
16 - SECTION 5. DETERMINATION OF SODIUM, POTASSIUM AND LITHIUM OXIDES
16 - 5.1 SCOPE OF SECTION.
16 - 5.2 REAGENTS.
16 - 5.2.1 General.
16 - 5.2.2 Solutions.
16 - 5.3 APPARATUS.
16 - 5.3.1 Flame photometer*.
16 - 5.4 PROCEDURE.
16 - 5.4.1 Preliminary procedures.
16 - 5.4.2 Sodium, potassium and lithium oxides.
17 - SECTION 6. TEST REPORT
18 - APPENDIX A - SCHEME OF ANALYSIS FOR HIGH ALUMINA MATERIALS
18 - A1 LOSS ON IGNITION, SiO2, P2O5, Al2O3, Fe2O3, TiO2, MnO, CaO, MgO.
19 - A2 Na2O, K2O, Li2O.

Describes a gravimetric method for determining the loss on ignition and the classical and spectrophotometric methods of analysis of high alumina refractory materials for the determination of the oxides of silicon, phosphorus, aluminium, iron(III), titanium, manganese, calcium and magnesium. Sodium, potassium and lithium are determined as the oxides by flame photometry. The results are expressed as a percentage (m/m) of the original material. The typical composition of high alumina refractory materials, is included together with a statement on the repeatability of the analysis.

This standard sets out methods for the sampling, preparation of sample and analysis of high alumina refractories and high alumina refractory materials. Procedures are described for determining-(a) the loss on ignition; and(b) the chemical composition, viz the amount of silicon, phosphorus, aluminium, iron, titanium, manganese, calcium, magnesium, sodium, potassium and lithium present, expressed as the oxides of these elements.

Reconfirmed 1995