AS 2884.3-1986

1 - AS 2884.3-1986 HEAVY MINERAL SAND CONCENTRATES - SAMPLING - PREPARATION OF SAMPLES
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE.
5 - 2 APPLICATION.
5 - 3 REFERENCED DOCUMENTS.
6 - 4 DEFINITIONS.
6 - 4.1 Bias
6 - 4 2 Divided increment
6 - 4.3 Division
6 - 4.4 Error
6 - 4.5 Chemical analysis sample
6 - 4.6 Laboratory sample
6 - 4.7 Nominal top size
6 - 4.8 Pass
6 - 4.9 Precision
6 - 4.10 Random error
6 - 4.11 Reduction (in particle size)
6 - 4.12 Sample preparation
6 - 4.13 Size analysis sample
6 - 4.14 Stage
6 - 4.15 Moisture sample
6 - 4.16 Physical test sample
6 - 5 FUNDAMENTALS OF SAMPLE PREPARATION.
6 - 5.1 General.
6 - 5.2 Mixing.
6 - 5.3 Division.
9 - 6 PRECISION OF SAMPLE PREPARATION.
9 - 7 BIAS IN SAMPLE PREPARATION.
9 - 8 PREPARATION OF SAMPLES FOR THE DETERMINATION OF MOISTURE.
9 - 8.1 General.
9 - 8.2 Precautions against loss of moisture.
9 - 9 PREPARATION OF SAMPLES FOR CHEMICAL ANALYSIS.
9 - 9.1 General.
9 - 9.2 Particle size reduction.
9 - 10 PREPARATION OF SAMPLES FOR PHYSICAL TESTS
10 - APPENDIX A - SAMPLE DIVIDERS
10 - A1 SCOPE.
10 - A2 RIFFLES.
10 - A3 ROTARY SAMPLE DIVIDER.
10 - A4 ROTATING CHUTE.
10 - A5 BOTTOM DUMP CUTTER.
10 - A6 SLOTTED BELT.
14 - APPENDIX B - SCOOPS FOR INCREMENT DIVISION

Sets out methods for the preparation for various tests of samples of heavy mineral sand concentrates collected in accordance with Standards for sampling from moving streams and stationary situations. Sample division equipment is outlined in appendices.

This standard sets out the methods for the preparation of representative samples of heavy mineral sand concentrates collected in accordance with the procedures specified in AS 2884.1 and AS 2884.2.AS 2884.1 deals with the sampling of concentrates from moving streams, and some sampling systems perform part of the sample preparation on-line. Aspects of on-line sample preparation are therefore covered in AS 2884.1.NOTE: Samples containing more than about 1 percent moisture are unlikely to be free flowing and sample division should be carried out by the increment division method (see Clause 5.3.3).

Under Revision see DR 03416 CP