AS 2862.1-2008

1 - AS 2862.1-2008 Copper, lead, zinc and nickel concentrates-Sampling - Part 1: Sampling procedures for determination of metal and moisture content
4 - PREFACE
5 - CONTENTS
9 - 1 Scope
9 - 2 Normative references
10 - 3 Terms and definitions
12 - 4 Sampling theory
12 - 4.1 General
13 - 4.2 Total variance
14 - 4.3 Sampling-stage method of estimating sampling and total variance
17 - 4.4 Simplified method of estimating sampling and total variance
18 - 4.5 Interleaved sample method of measuring total variance
20 - 5 Establishing a sampling scheme
25 - 6 Mass of increment
25 - 6.1 General
25 - 6.2 Mass of increment for falling-stream samplers
25 - 6.3 Mass of increment for cross-belt samplers
26 - 6.4 Mass of increment for manual sampling from stationary lots
26 - 6.5 Mass of increment for stopped-belt reference sampling
26 - 7 Methods of sampling from concentrate streams
26 - 7.1 General
26 - 7.2 Mass-basis systematic sampling
29 - 7.3 Time-basis systematic sampling
30 - 7.4 Stratified random sampling
31 - 8 Mechanical sampling of concentrate streams
31 - 8.1 General
31 - 8.2 Design of the sampling system
32 - 8.3 Sample cutters
35 - 8.4 Mass of increments
35 - 8.5 Number of increments
35 - 8.6 Sampling interval
35 - 8.7 Routine checking
36 - 9 Manual sampling of concentrate streams
36 - 9.1 General
36 - 9.2 Choosing the sampling location
36 - 9.3 Sampling implements
36 - 9.4 Mass of increments
36 - 9.5 Number of increments
36 - 9.6 Sampling interval
37 - 9.7 Sampling procedures
38 - 10 Stopped-belt reference sampling
39 - 11 Sampling from grabs
39 - 11.1 General
39 - 11.2 Mass of primary increments
39 - 11.3 Number of primary increments
39 - 11.4 Method of sampling
39 - 11.5 Constitution of subsamples and lot samples
40 - 12 Sampling from trucks, railway wagons and sampling hoppers
40 - 12.1 General
40 - 12.2 Mass of primary increments
40 - 12.3 Number of primary increments
40 - 12.4 Method of sampling
40 - 12.5 Constitution of subsamples and lot samples
43 - 13 Sampling of concentrate in bags or drums
43 - 13.1 General
43 - 13.2 Mass of primary increments
43 - 13.3 Number of primary increments
44 - 13.4 Method of sampling
44 - 13.5 Constitution of subsamples and lot samples
45 - 14 Sampling of stockpiles
45 - 15 Methods of comminution, mixing and division
45 - 15.1 General
45 - 15.2 Comminution
46 - 15.3 Mixing
48 - 15.4 Division
57 - 16 Sample requirements
57 - 16.1 Moisture samples
57 - 16.2 Chemical analysis samples
58 - 16.3 Physical test samples
58 - 17 Packing and marking of samples
59 - Annex A (normative) Sampling stage method of estimating sampling and total variance
66 - Annex B (informative) Estimation of total variance - Barge unloading using a grab
70 - Annex C (informative) Mechanical sample cutters
75 - Annex D (informative) Checklist for mechanical sampling systems
79 - Annex E (normative) Manual sampling devices
81 - Annex F (informative) Apparatus for manual sampling of concentrates from stopped belts
82 - Annex G (informative) Sampling of stockpiles
84 - Annex H (normative) Increment division scoops for conducting manual increment division
85 - Bibliography