ISO 2950:1974
Brown coals and lignites — Classification by types on the basis of total moisture content and tar yield
Brown coals and lignites — Classification by types on the basis of total moisture content and tar yield
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Количество страниц:
- 2
- Дата публикации:
- 1 февраля 1974 г.
- Издание:
- ISO IS 2950 edition 1 version 1
- ICS:
- 73.040
Brown coals are classified in this International Standard according to the following properties: total moisture content calculated on the ash-free basis; tar hiels calculated on the dry, ash-free basis. In tables class numbers, group number and code numbers of brown coal types are given.
Abstract
Overview
ISO 2950:1974 is an international standard developed by the International Organization for Standardization (ISO) that provides a systematic classification of brown coals and lignites. The classification is based primarily on two critical properties: and . Both properties are calculated on specific bases to ensure consistency - total moisture on an ash-free basis, and tar yield on a dry, ash-free basis. This standard supports the coal industry and related sectors by offering a clear, comparable framework to categorize brown coals according to these influential quality factors.
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