Table of Contents

1 -  AS 2503.5-2003 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 DEFINITIONS
6 -  1.3.1 Chrome-alumina refractory
7 -  1.3.2 Chrome-dolomite refractory
7 -  1.3.3 Chrome refractory
7 -  1.3.4 Chrome-silica refractory
7 -  1.3.5 Chrome-sillimanite refractory
7 -  1.4 PRINCIPLE
8 -  1.5 REPEATABILITY
8 -  1.6 SAFETY
9 -  SECTION 2 SAMPLING AND SAMPLE PREPARATION
9 -  2.1 SCOPE
9 -  2.2 GROSS SAMPLING
9 -  2.2.1 Shaped materials
9 -  2.2.2 Bulk or ground materials
9 -  2.3 PREPARATION OF SAMPLE
9 -  2.3.1 Crushing
10 -  2.3.2 Test samples
11 -  SECTION 3 DETERMINATION OF LOSS ON IGNITION
11 -  3.1 SCOPE
11 -  3.2 APPARATUS
11 -  3.2.1 Drying oven
11 -  3.2.2 Muffle furnace
11 -  3.2.3 Platinum crucible
11 -  3.2.4 Weighing balance
11 -  3.3 PROCEDURE
12 -  SECTION 4 DETERMINATION OF SILICON
12 -  4.1 SCOPE
12 -  4.2 REAGENTS
12 -  4.2.1 General
12 -  4.2.2 Solid reagents
12 -  4.2.3 Solutions
13 -  4.3 APPARATUS
13 -  4.3.1 Glassware
13 -  4.3.2 Hot water bath
13 -  4.3.3 Platinum dish
13 -  4.3.4 Sintered glass crucible (porosity 5 µm to 15 µm)
13 -  4.3.5 Common apparatus
13 -  4.4 PROCEDURE
13 -  4.4.1 Blank test
13 -  4.4.2 Continuity of analysis
13 -  4.4.3 Determination
16 -  SECTION 5 DETERMINATION OF CHROMIUM
16 -  5.1 SCOPE OF SECTION
16 -  5.2 REAGENTS
16 -  5.2.1 Introduction
16 -  5.2.2 Solid reagents
16 -  5.2.3 General solutions
16 -  5.2.4 Standard solutions
17 -  5.2.5 Indicator-barium diphenylamine sulfonate solution
17 -  5.3 APPARATUS
17 -  5.4 PROCEDURE
17 -  5.4.1 Blank test
17 -  5.4.2 Determination
19 -  SECTION 6 DETERMINATION OF TITANIUM, IRON, ALUMINIUM, MANGANESE, CALCIUM AND MAGNESIUM
19 -  6.1 SCOPE
19 -  6.2 REAGENTS
19 -  6.2.1 Introduction
19 -  6.2.2 Solid reagents
19 -  6.2.3 General solutions
21 -  6.2.4 Standard solutions
23 -  6.2.5 Indicators
23 -  6.3 APPARATUS
23 -  6.3.1 Steam bath
23 -  6.3.2 UV-visible spectrophotometer
23 -  6.3.3 Common apparatus
24 -  6.4 PROCEDURE
24 -  6.4.1 Blank test
24 -  6.4.2 Preparation of test solution (Solution A)
25 -  6.4.3 Determination of titanium dioxide
26 -  6.4.4 Determination of iron as iron (III) oxide
26 -  6.4.5 Determination of manganese oxide
27 -  6.4.6 Determination of aluminium oxide
29 -  6.4.7 Determination of calcium oxide
29 -  6.4.8 Determination of magnesium oxide
32 -  SECTION 7 DETERMINATION OF SODIUM, POTASSIUM AND LITHIUM OXIDES
32 -  7.1 SCOPE OF SECTION
32 -  7.2 REAGENTS
32 -  7.2.1 General
32 -  7.2.2 Solutions
32 -  7.3 APPARATUS
32 -  7.3.1 Flame photometer
32 -  7.3.2 Common apparatus
33 -  7.4 PROCEDURE
33 -  7.4.1 Preliminary procedures
33 -  7.4.2 Determination of sodium, potassium and lithium oxides
34 -  SECTION 8 TEST REPORT
35 -  APPENDIX A - STANDARDIZATION OF CDTA AND EGTA SOLUTIONS
35 -  A1 SCOPE
35 -  A2 REPEATABILITY
35 -  A3 REAGENTS AND SOLUTIONS
35 -  A4 PROCEDURE
35 -  A4.1 Standardization of CDTA against magnesium
36 -  A4.2 Standardization of CDTA against zinc
36 -  A4.3 Standardization of EGTA against calcium
38 -  APPENDIX B - STANDARDIZATION OF AMMONIUM IRON(II) SULFATE SOLUTION
38 -  B1 SCOPE
38 -  B2 REPEATABILITY
38 -  B3 REAGENTS AND SOLUTIONS
38 -  B4 PROCEDURE
40 -  APPENDIX C - SCHEME OF ANALYSIS FOR CHROME-BEARING MATERIALS

Abstract

Sets out methods for the sampling, sample preparation, and analysis of chrome-bearing materials.

RECONFIRMATION NOTICE
Technical Committee MN-007 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 4 April 2013.
The following are represented on Technical Committee MN-007:

Australasian Institute of Mining and Metallurgy
Australian Ceramic Society
Bureau of Steel Manufacturers of Australia
Cement Industry Federation
CSIRO Manufacturing & Materials Technology
Institute of Refractories Engineers
Refractories Manufacturers Association of Australia
The University of New South Wales

To view or download a copy of the reconfirmation notice please go to the reconfirmation link near the top of this page.

Scope

This Standard sets out methods for the sampling, sample preparation, and analysis of chrome-bearing refractories and refractory materials. Procedures are described for the determination of—
(a) the loss on ignition*; and
(b) the chemical composition*, viz the amount of silicon, chromium, titanium, iron, aluminium, manganese, calcium, magnesium, sodium, potassium and lithium present in chrome-bearing materials, expressed as the oxides of these elements.
NOTE: Appendix C provides an overview of these test procedures in flowchart form.
This Standard applies to chrome-bearing materials represented by those defined in Clause 1.3, whose composition is typified by Table 1.1. It may be applicable to materials which fall outside these ranges, but if used for such cases, it is necessary to exercise caution when interpreting the results as it cannot be assumed the limits cited in Clause 1.5 apply.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 05-07-2013
Pages
ISBN
Committee	MN-007
Supersedes	DR 02506 CP AS 2503.5-1989