This document describes a simple classification system for coals providing<\/p>\n
guidance on the selection of the appropriate ISO standard procedures for the analyses and testing of coals,<\/p>\n<\/li>\n
international comparison of coals in terms of some key characteristics,<\/p>\n<\/li>\n
descriptive categorization of coals.<\/p>\n<\/li>\n<\/ul>\n
The system is applicable to coals of all ranks, but care is required in relation to the classification of some types of coal.<\/p>\n
The system can be applied to a wide range of representative coal samples, provided their exact nature is stated. Such samples include bore-core seam sections and composite samples, raw (as-mined) coal, washed coal, blends of coals of similar rank and selected, specified size fractions.<\/p>\n
The system provides a broad framework within which coals can be assessed. The selection of coals for a specific use requires detailed information that enables the likely performance of a coal in a particular application to be anticipated. The wide-ranging list of ISO analyses and test procedures for coals serve this purpose. The selection of the appropriate procedures to be used in assessing a coal depends on the intended use.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | National foreword <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 Classification 4.1 General 4.2 Rank \u2014 Primary categories <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 4.3 Rank \u2014 Sub-categories <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.4 Petrographic (maceral group) composition <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 4.5 Ash yield 5 Nature of the coal sample <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 6 Descriptive classification terminology 7 Analytical tolerances <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 8 Graphic representation <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Classification of coals<\/b><\/p>\n |