This document sets out the basic methods for sampling copper, lead, zinc and nickel concentrates from moving streams and stationary lots, including stopped-belt sampling, to provide samples for chemical analysis, physical testing and determination of moisture content, in accordance with the relevant International Standards. Where the concentrates are susceptible to significant oxidation or decomposition, a common sample that is sufficiently representative, i.e. unbiased and sufficiently precise, is used for moisture determination and chemical analysis to eliminate bias (see ISO 10251). Any large agglomerates (>10 mm) present in the primary sample are crushed prior to further sample processing. Sampling of concentrates in slurry form is specifically excluded from this document.<\/p>\n
Stopped-belt sampling is the reference method for collecting concentrate samples against which mechanical and manual-sampling procedures can be compared. Sampling from moving streams is the preferred method. Both falling-stream and cross-belt samplers are described.<\/p>\n
Sampling from stationary lots is used only where sampling from moving streams is not possible. The procedures described in this document for sampling from stationary lots only minimize some of the systematic sampling errors.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4 Sampling theory 4.1 General 4.2 Total variance <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.3 Sampling-stage method of estimating sampling and total variance <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 4.4 Simplified method of estimating sampling and total variance <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 4.5 Interleaved sample method of measuring total variance <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5 Establishing a sampling scheme <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 6 Mass of increment 6.1 General 6.2 Mass of increment for falling-stream samplers 6.3 Mass of increment for cross-belt samplers 6.4 Mass of increment for manual sampling from stationary lots 6.4.1 Primary increments <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 6.4.2 Mass of secondary and subsequent increments 6.5 Mass of increment for stopped-belt reference sampling 7 Methods of sampling from concentrate streams 7.1 General 7.2 Mass-basis systematic sampling 7.2.1 General 7.2.2 Sampling interval <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 7.2.3 Sample cutter 7.2.4 Taking of primary increments 7.2.5 Constitution of subsamples and lot samples <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 7.2.6 Types of division 7.2.7 Division of increments 7.2.8 Division of subsamples 7.2.9 Division of lot samples <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 7.3 Time-basis systematic sampling 7.3.1 General 7.3.2 Sampling interval 7.3.3 Sample cutter 7.3.4 Taking of primary increments <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 7.3.5 Constitution of subsamples and lot samples 7.3.6 Types of division 7.3.7 Division of increments and subsamples 7.3.8 Division of lot samples 7.4 Stratified random sampling 7.4.1 Fixed mass intervals 7.4.2 Fixed time intervals <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 8 Mechanical sampling of concentrate streams 8.1 General 8.2 Design of the sampling system 8.2.1 Safety of operators 8.2.2 Location of sample cutters 8.2.3 Provision for interleaved sampling 8.2.4 Provision for stratified random sampling <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 8.2.5 Checking precision and bias 8.2.6 Avoiding bias 8.2.7 Minimizing bias 8.2.8 Configuration of the sampling system 8.3 Sample cutters 8.3.1 General <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 8.3.2 Design criteria <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | 8.3.3 Cutter speed 8.4 Mass of increments <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | 8.5 Number of increments 8.6 Sampling interval 8.7 Routine checking <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | 9 Manual sampling of concentrate streams 9.1 General 9.2 Choosing the sampling location 9.3 Sampling implements 9.4 Mass of increments 9.5 Number of increments 9.6 Sampling interval <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | 9.7 Sampling procedures 9.7.1 General 9.7.2 Full stream cut from a falling stream 9.7.3 Partial stream cuts from a falling stream <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | 9.7.4 Sampling from moving conveyor belts 10 Stopped-belt reference sampling <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | 11 Sampling from grabs 11.1 General 11.2 Mass of primary increments 11.3 Number of primary increments 11.4 Method of sampling 11.5 Constitution of subsamples and lot samples <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | 12 Sampling from trucks, railway wagons and sampling hoppers 12.1 General 12.2 Mass of primary increments 12.3 Number of primary increments 12.4 Method of sampling 12.5 Constitution of subsamples and lot samples <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | 13 Sampling of concentrate in bags or drums 13.1 General 13.2 Mass of primary increments 13.3 Number of primary increments <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | 13.4 Method of sampling 13.4.1 General 13.4.2 Sampling during filling or emptying 13.4.3 Spear sampling 13.5 Constitution of subsamples and lot samples <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | 14 Sampling of stockpiles 15 Methods of comminution, mixing and division 15.1 General 15.2 Comminution 15.2.1 General 15.2.2 Mills <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | 15.3 Mixing 15.3.1 General 15.3.2 Methods of mixing <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | 15.4 Division 15.4.1 Chemical analysis samples <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | 15.4.2 Moisture samples 15.4.3 Number of increments for division 15.4.4 Minimum mass of divided sample <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | 15.4.5 Rotary sample division <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | 15.4.6 Cutter-type division 15.4.7 Manual increment division 15.4.8 Spear division <\/td>\n<\/tr>\n | ||||||
| 51<\/td>\n | 15.4.9 Fractional shovelling <\/td>\n<\/tr>\n | ||||||
| 52<\/td>\n | 15.4.10 Ribbon division <\/td>\n<\/tr>\n | ||||||
| 54<\/td>\n | 15.4.11 Riffle division <\/td>\n<\/tr>\n | ||||||
| 56<\/td>\n | 16 Sample requirements 16.1 Moisture samples 16.1.1 Mass of test portion 16.1.2 Processing of samples 16.2 Chemical analysis samples <\/td>\n<\/tr>\n | ||||||
| 57<\/td>\n | 16.3 Physical test samples 17 Packing and marking of samples <\/td>\n<\/tr>\n | ||||||
| 58<\/td>\n | Annex A (normative) Sampling stage method of estimating sampling and total variance <\/td>\n<\/tr>\n | ||||||
| 65<\/td>\n | Annex B (informative) Estimation of total variance \u2014 Barge unloading using a grab <\/td>\n<\/tr>\n | ||||||
| 69<\/td>\n | Annex C (informative) Mechanical sample cutters <\/td>\n<\/tr>\n | ||||||
| 74<\/td>\n | Annex D (informative) Checklist for mechanical sampling systems <\/td>\n<\/tr>\n | ||||||
| 78<\/td>\n | Annex E (normative) Manual sampling devices <\/td>\n<\/tr>\n | ||||||
| 80<\/td>\n | Annex F (informative) Apparatus for manual sampling of concentrates from stopped belts <\/td>\n<\/tr>\n | ||||||
| 81<\/td>\n | Annex G (informative) Sampling of stockpiles <\/td>\n<\/tr>\n | ||||||
| 83<\/td>\n | Annex H (normative) Increment division scoops for conducting manual increment division <\/td>\n<\/tr>\n | ||||||
| 84<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Copper, lead, zinc and nickel concentrates. sampling procedures for determination of metal and moisture content<\/b><\/p>\n |