Standard
Track updates
icon

AS 4932.4-2002

[Current]

Representation of results of particle size analysis, Part 4: Characterization of a classification process

Specifies the mathematical background for the characterization of a classification process. This Standard is not limited to an application in particle size analysis, the same procedure may be used for the characterization of a technical classification process (e.g. air classification, centrifugal classification) or a separation process (e.g. gas or hydrocyclone). This Standard is identical with and has been reproduced from ISO 9276-4:2001.
Published: 20/06/2002
$109.13
AUD
Inclusive of GST
Available formats
icon
Available formats
icon_export/16/close
Web Reader
Instantly view standards in your browser. Search, bookmark, highlight, and comment for anytime access - online and offline.
Web Reader (PDF)
View standards in PDF format in your browser. Search, bookmark, highlight, and comment for anytime access - online and offline.
Web Reader
Licence:
1 user
Total
$109.13
Add to cart
visa logo
mastercard logo
amex logo
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope
2 Symbols
2.1 Symbols for specific terms
2.2 Subscripts
3 Characterization of a classification process based on error-free distribution curves and mass balances
3.1 Density distribution curves representing a classification process
3.2 Mass and number balances
3.2.1 Mass and number balance in the size range from xmin to xmax
3.2.2 Mass and number balance in the size range from x to x + dx
3.2.3 Mass and number balance in the size range from xmin to x
3.2.4 The indirect evaluation of vr,f and vr,c
3.3 Definitions of cut size, xe
3.3.1 General
3.3.2 The equiprobable cut size, xe, the median of the grade efficiency curve
3.3.3 The analytical cut size, xa
3.4 Grade efficiency, T, the grade efficiency curve, T(x), (Tromp's curve)
3.5 Measures of sharpness of cut
3.5.1 General
3.5.2 Parameters formed with characteristic particle sizes
3.5.3 Parameters derived from cumulative distribution curves
3.5.4 The total classification or separation efficiency, To
4 The influence of systematic errors on the determination of grade efficiency curve
4.1 General
4.2 Systematic error due to a splitting process in the classifier
4.3 Incomplete dispersion of the feed material
4.4 The influence of comminution of the feed in the classifier
Annex A
A.1 General
A.2 The indirect evaluation of vr,f and vr,c
A.3 The evaluation of the grade efficiency curve, T(x), from erroneous cumulative size distributions
Bibliography
Cited references in this standard
Content history
DR 01327
AS 4932.4-2002 Rec:2016