BS ISO 3082:2017 Iron ores. Sampling and sample preparation procedures, 2017
- National foreword
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 General considerations for sampling and sample preparation
- 4.1 Basic requirements
- 4.2 Establishing a sampling scheme
- 4.3 System verification
- 5 Fundamentals of sampling and sample preparation
- 5.1 Minimization of bias
- 5.1.1 General
- 5.1.2 Minimization of particle size degradation
- 5.1.3 Extraction of increments
- 5.1.4 Increment mass
- 5.2 Overall precision
- 5.3 Quality variation
- 5.4 Sampling precision and number of primary increments
- 5.4.1 Mass-basis sampling
- 5.4.2 Time-basis sampling
- 5.5 Precision of sample preparation and overall precision
- 5.5.1 General
- 5.5.2 Preparation and measurement of gross sample
- 5.5.3 Preparation and measurement of partial samples
- 5.5.4 Preparation and measurement of each increment
- 6 Methods of sampling
- 6.1 Mass-basis sampling
- 6.1.1 Mass of increment
- 6.1.2 Quality variation
- 6.1.3 Number of primary increments
- 6.1.4 Sampling interval
- 6.1.5 Methods of taking increments
- 6.2 Time-basis sampling
- 6.2.1 Mass of increment
- 6.2.2 Quality variation
- 6.2.3 Number of increments
- 6.2.4 Sampling interval
- 6.2.5 Methods of taking increments
- 6.3 Stratified random sampling within fixed mass or time intervals
- 6.3.1 General
- 6.3.2 Fixed mass intervals
- 6.3.3 Fixed time intervals
- 7 Sampling from moving streams
- 7.1 General
- 7.2 Safety of operations
- 7.3 Robustness of sampling installation
- 7.4 Versatility of sampling system
- 7.5 Primary samplers
- 7.5.1 Location
- 7.5.2 Types of primary sampler
- 7.5.3 General design criteria for primary cutters
- 7.5.4 Cutter aperture of primary sampler
- 7.5.5 Cutter speed of primary sampler
- 7.6 Secondary and subsequent samplers
- 7.7 Online sample preparation
- 7.7.1 Arrangement for sample preparation
- 7.7.2 Crushers
- 7.7.3 Dividers
- 7.7.4 Dryers
- 7.8 Checking precision and bias
- 7.9 Cleaning and maintenance
- 7.10 Example of a flowsheet
- 8 Sampling from stationary situations
- 8.1 General
- 8.2 Sampling from trucks and wagons
- 8.2.1 General
- 8.2.2 Sampling devices
- 8.2.3 Number of primary increments
- 8.2.4 Method of sampling
- 8.3 Sampling from ships, stockpiles and bunkers
- 9 Stopped-belt reference sampling
- 10 Sample preparation
- 10.1 Fundamentals
- 10.1.1 General
- 10.1.2 Drying
- 10.1.3 Crushing and grinding
- 10.1.4 Mixing
- 10.1.5 Division
- 10.1.6 Mass of divided sample
- 10.1.7 Split use and multiple use of sample
- 10.2 Method of constituting partial samples or a gross sample
- 10.2.1 General
- 10.2.2 Method of constitution for mass-basis sampling
- 10.2.3 Method of constitution for time-basis sampling
- 10.2.4 Special procedure for moisture content
- 10.3 Mechanical methods of division
- 10.3.1 Mechanical increment division
- 10.3.2 Other mechanical division methods
- 10.4 Manual methods of division
- 10.4.1 General
- 10.4.2 Manual increment-division method
- 10.4.3 Manual strip-division method
- 10.4.4 Manual riffle-division method
- 10.5 Preparation of test samples for chemical analysis
- 10.5.1 Mass and particle size
- 10.5.2 Preparation to 250 µm nominal top size
- 10.5.3 Final preparation
- 10.5.4 Grinding to 100 µm or 160 µm nominal top size
- 10.5.5 Distribution of samples for chemical analysis
- 10.6 Preparation of test samples for moisture determination
- 10.7 Preparation of test samples for size determination
- 10.8 Preparation of test samples for physical testing
- 10.8.1 Selection of sample preparation procedure
- 10.8.2 Extraction of test samples
- 10.8.3 Reserve samples
- 11 Packing and marking of samples
- Annex A (informative) Inspection of mechanical sampling systems
- Annex B (normative) Formulae for number of increments
- Annex C (informative) Alternative methods of taking the reference sample
- Annex D (normative) Procedure for determining the minimum mass of divided gross sample for size determination using other mechanical division methods
- Annex E (normative) Riffle dividers
- Bibliography [Go to Page]