09/30203217 DC : 0
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
BS ISO 11794 - COPPER, LEAD, ZINC AND NICKEL CONCENTRATES - SAMPLING OF SLURRIES
Hardcopy , PDF
31-10-2010
English
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 Principles of sampling slurries
4.1 General
4.2 Sampling errors
4.2.1 General
4.2.2 Preparation error, PE
4.2.3 Delimitation and extraction errors,
DE and EE
4.2.4 Weighting error, WE
4.2.5 Periodic quality fluctuation error, QE[3]
4.3 Sampling and total variance
4.3.1 Sampling variance
4.3.2 Total variance
4.3.3 Sampling stage method of estimating
sampling and total variance
4.3.4 Simplified method of estimating
sampling and total variance
4.3.5 Interleaved sample method of measuring
total variance
5 Establishing a sampling scheme
6 Minimization of bias and unbiased increment mass
6.1 Minimization of bias
6.2 Volume of increment for falling-stream
samplers to avoid bias
6.3 Volume of increment for manual sampling
to avoid bias
7 Number of increments
7.1 General
7.2 Simplified method
8 Minimum mass of solids contained in lot and
sub-lot samples
8.1 Minimum mass of solids in lot samples
8.2 Minimum mass of solids in sub-lot samples
8.3 Minimum mass of solids in lot and sub-lot
samples after size reduction
9 Time-basis sampling
9.1 General
9.2 Sampling interval
9.3 Cutters
9.4 Taking of increments
9.5 Constitution of lot or sub-lot samples
9.6 Division of increments and sub-lot samples
9.7 Division of lot samples
9.8 Number of cuts for division
10 Stratified random sampling within fixed time intervals
11 Mechanical sampling from moving streams
11.1 General
11.2 Design of the sampling system
11.2.1 Safety of operators
11.2.2 Location of sample cutters
11.2.3 Provision for duplicate sampling
11.2.4 System for checking the precision and bias
11.2.5 Avoiding bias
11.3 Slurry sample cutters
11.3.1 General
11.3.2 Falling-stream cutters
11.3.3 Cutter velocities
11.4 Mass of solids in increments
11.5 Number of primary increments
11.6 Routine checking
12 Manual sampling from moving streams
12.1 General
12.2 Choosing the sampling location
12.3 Sampling implements
12.4 Mass of solids in increments
12.5 Number of primary increments
12.6 Sampling procedures
13 Sampling of stationary slurries
14 Sample preparation
14.1 General
14.2 Sample division
14.3 Sample grinding
14.4 Chemical analysis samples
14.5 Physical test samples
15 Packing and marking of samples
Annex A (normative) - Sampling stage method for estimating
sampling and total variance
A.1 Components of sampling error and sampling variance
A.2 Estimation of fundamental variance
A.3 Segregation and grouping variance
A.4 Long-range quality fluctuation variance
A.5 Practical estimation of total variance
Annex B (informative) - Examples of correct slurry sampling
devices
Annex C (informative) - Examples of incorrect slurry sampling
devices
Annex D (normative) - Manual sampling implements
Bibliography
Committee |
NFE/36
|
DocumentType |
Draft
|
Pages |
50
|
PublisherName |
British Standards Institution
|
Status |
Superseded
|
SupersededBy |
ISO 12743:2006 | Copper, lead, zinc and nickel concentrates Sampling procedures for determination of metal and moisture content |
ISO 11790:2017 | Copper, lead, zinc and nickel concentrates — Guidelines for the inspection of mechanical sampling systems |
ISO 13292:2006 | Copper, lead, zinc and nickel concentrates Experimental methods for checking the bias of sampling |
ISO 12744:2006 | Copper, lead, zinc and nickel concentrates Experimental methods for checking the precision of sampling |
ISO 3534-1:2006 | Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.