SIST ISO 2950:1998

Brown coals and lignites -- Classification by types on the basis of total moisture content and tar yield

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.

Charbons bruns et lignites -- Classification en types, d'après la teneur en humidité totale et le rendement en goudron

Rjavi premogi in ligniti - Razvrstitev v vrste po deležu celotne vlage in deležu katrana

General Information

• Status: Published
• Publication Date: 31-Jan-1998
• ICS: 73.040 - Coals
• Technical Committee: IRUD - Mining
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Feb-1998
• Due Date: 01-Feb-1998
• Completion Date: 01-Feb-1998
• Ref Project: ISO 2950:1974 - Brown coals and lignites - Classification by types on the basis of total moisture content and tar yield

Overview

SIST ISO 2950:1998 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: total moisture content and tar yield. 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.

Key Topics

• Classification by Moisture Content
  Brown coals and lignites are first divided into classes depending on their total moisture content. This is calculated on an ash-free basis to provide a consistent parameter across different samples. The moisture content ranges from less than 20% up to more than 60%, grouped into six distinct classes. This classification impacts the usage, handling, and energy properties of the coal.

• Classification by Tar Yield
  Within each moisture class, the coal is further grouped by tar yield - a measure of the tar produced during low-temperature distillation of coal. Tar yield is calculated on a dry, ash-free basis, reflecting the coal's potential for byproduct recovery and energy value. Group numbers are assigned based on defined tar percentages.

• Two-Digit Code System
  ISO 2950 defines a two-digit code to represent the coal type, where:

  • The first digit indicates the class based on total moisture content
  • The second digit represents the tar yield group
    This coding provides a concise and standardized way to identify and compare brown coal types internationally.

• Reference Methods for Determination
  The standard references precise analytical methods for determining moisture content (ISO/R 1015), tar yield (ISO/R 647), and ash content (ISO/R 1171), ensuring reliable and reproducible results in classification.

Applications

• Coal Industry and Mining Operations
  Accurate classification according to ISO 2950 facilitates optimized extraction strategies and quality control, helping producers classify brown coal reserves by commercial and technical value.

• Energy Production and Fuel Selection
  Power plants and fuel suppliers utilize these classifications to select suitable coal types, balancing moisture and tar content for efficient combustion and energy output.

• Byproduct Recovery and Chemical Processing
  Understanding tar yield is essential for processes aiming to recover coal tar and related chemicals, allowing industries to evaluate feedstock suitability.

• International Trade and Regulation
  Standardized classification supports transparent communication, trade negotiations, and regulatory compliance by providing a universally accepted terminology and categorization.

Related Standards

• ISO/R 647: Method for determining yields of tar, water, gas, and coke residue from low-temperature distillation of brown coal and lignite.
• ISO/R 1015: Method for determining moisture in brown coals and lignites by direct volumetric measurement.
• ISO/R 1171: Method for determining ash content in solid mineral fuels.

Summary

SIST ISO 2950:1998 provides a practical and internationally recognized framework for classifying brown coals and lignites based on moisture and tar yield. This classification enhances quality assessment, process optimization, and international trade within the coal and energy sectors. It supports consistent communication and technical evaluation across global markets by establishing clear parameters and coding systems essential for stakeholders involved in coal utilization and processing.

Standards Content (Sample)

SLOVENSKI STANDARD
01-februar-1998
Rjavi premogi in ligniti - Razvrstitev v vrste po deležu celotne vlage in deležu
katrana
Brown coals and lignites -- Classification by types on the basis of total moisture content
and tar yield
Charbons bruns et lignites -- Classification en types, d'après la teneur en humidité totale
et le rendement en goudron
Ta slovenski standard je istoveten z: ISO 2950:1974
ICS:
73.040 Premogi Coals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXJ(YHAPOAHAR OPI-AHM3ALWR I-IO CTAHAAPTM3AWiW.ORGANISATION INTERNATIONALE DE NORMALISATION
Brown coals and lignites - Classification by types
on the basis of total moisture content and tar yield
Classification en types, dapks Ia teneur en humiditt! totale et Ie
Charbons bruns et lignites -
rendemen t en goudron
First edition - 1974-02-01
UDC 662.642.001.3
Red. No. ISO 2950-1974 (E)
Descriptors : coal, Iignite, classification, moisture content, tars, yield.
Price based on 2 pages
FOREWORD
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO Member Bodies). The work of developing
International Standards is carried out through ISO Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up has the right to be represented on that Committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards Dy the ISO Council.
International Standard ISO 2950 was drawn up by Technical Committee
ISO/TC 27, Solid minera/ fue/s, and circulated to the Member Bodies in
November 1972.
lt has been approved by the Member Bodies of the following countries :
Belgium Iran Thailand
Bulgaria Italy Turkey
Canada New Zealand U .S.A.
Czechoslovakia Poland U S.S. R.
Denmark Portugal Yugoslavia
France South Africa, Rep. of
India Sweden
The Member Body of the following country expressed disapproval of the document
on technical grounds :
Australia
0 International Organkation for Standardkation, 1974 l
Printed in Switzerland
INTERNATIONAL STANDARD ISO 29504974 (E)
Brown coals and lignites - Classification by types
on the basis of total moisture content and tar yield
1 SCOPE AND FIELD OF APPLICA
...

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXJ(YHAPOAHAR OPI-AHM3ALWR I-IO CTAHAAPTM3AWiW.ORGANISATION INTERNATIONALE DE NORMALISATION
Brown coals and lignites - Classification by types
on the basis of total moisture content and tar yield
Classification en types, dapks Ia teneur en humiditt! totale et Ie
Charbons bruns et lignites -
rendemen t en goudron
First edition - 1974-02-01
UDC 662.642.001.3
Red. No. ISO 2950-1974 (E)
Descriptors : coal, Iignite, classification, moisture content, tars, yield.
Price based on 2 pages
FOREWORD
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO Member Bodies). The work of developing
International Standards is carried out through ISO Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up has the right to be represented on that Committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards Dy the ISO Council.
International Standard ISO 2950 was drawn up by Technical Committee
ISO/TC 27, Solid minera/ fue/s, and circulated to the Member Bodies in
November 1972.
lt has been approved by the Member Bodies of the following countries :
Belgium Iran Thailand
Bulgaria Italy Turkey
Canada New Zealand U .S.A.
Czechoslovakia Poland U S.S. R.
Denmark Portugal Yugoslavia
France South Africa, Rep. of
India Sweden
The Member Body of the following country expressed disapproval of the document
on technical grounds :
Australia
0 International Organkation for Standardkation, 1974 l
Printed in Switzerland
INTERNATIONAL STANDARD ISO 29504974 (E)
Brown coals and lignites - Classification by types
on the basis of total moisture content and tar yield
1 SCOPE AND FIELD OF APPLICATION 4 CLASSIFICATION INDICES
This International Standard establishes a classification of 4.1 Division of brown coals into classes
brown coals and lignites by types on the basis of total
The brown coals are first divided according to their total
moisture content and tar yield. .
moisture content, calculated on the ash-free basis, into the
classes shown in table 1.
Unt
...

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION #MEJKlJb’HAPOfiHAII OPI-AHM3AUM~ I-I0 CTAH~APTM3AUMM =ORGANISATION INTERNATIONALE DE NORMALISATION
- Classification en types, d’après
Charbons runs et lignites
la teneur en humidité totale et le rendement en goudron
Brown coals and lignites - Classification by types on the basis of total moisture content and tar yield
Première édition - 1974~02-01
Réf. No : ISQ 2950-1974 (F)
CDU 662.642.001.3
classification, teneur en eau, goudron, quantité produite.
Descripteurs : charbon, lignite,
Prix basé sur 2 pages
AVANT-PROPOS
ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres ISO). L’élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
correspondant.
Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
La Norme Internationale ISO 2950 a été établie par le Comité Technique
ISO/TC 27, Combustibles minéraux solides, et soumise aux Comités Membres en
novembre 1972.
Elle a été approuvée par les Comités Membres des pays suivants :
Afrique du Sud, Rép. d’ Iran Thaïlande
Belgique Italie Turquie
Bulgarie Nouvelle-Zélande U.R.S.S.
Canada Pologne U.S.A.
Danemark Portugal Yougoslavie
France Suède
Inde Tchécoslovaquie
document pour des raisons
Le Comité Membre du pays suivant a désapprouvé le
techniques
Australie
0 Organisation Internationale de Normalisation, 1974 l
Imprimé en Suisse
ISO 2950-1974 (F)
NORME INTERNATIONALE
Classification en types, d’après
Charbons bruns et lignites -
la teneur en humidité totale et le rendement en goudron
‘I OBJET ET DOMAINE D’APPLICATION 4 INDICES DE CLASSIFICATION
4.1 Division des charbons bruns en classes
La présente Norme Internationale établit une classification
des charbons bruns et des lignites, en types, d’après la
Les charbons bruns sont tout d’abord divisés d’après leur
teneur en humidité totale et le rendement en goudron.
teneur en humidité totale, calculée sur la base «exempt de
cendres)),
selon les classes suivantes indiquées dans le
Jusqu’à ce que des caractéristiques sûres, permet
...

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION #MEJKlJb’HAPOfiHAII OPI-AHM3AUM~ I-I0 CTAH~APTM3AUMM =ORGANISATION INTERNATIONALE DE NORMALISATION
- Classification en types, d’après
Charbons runs et lignites
la teneur en humidité totale et le rendement en goudron
Brown coals and lignites - Classification by types on the basis of total moisture content and tar yield
Première édition - 1974~02-01
Réf. No : ISQ 2950-1974 (F)
CDU 662.642.001.3
classification, teneur en eau, goudron, quantité produite.
Descripteurs : charbon, lignite,
Prix basé sur 2 pages
AVANT-PROPOS
ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres ISO). L’élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
correspondant.
Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
La Norme Internationale ISO 2950 a été établie par le Comité Technique
ISO/TC 27, Combustibles minéraux solides, et soumise aux Comités Membres en
novembre 1972.
Elle a été approuvée par les Comités Membres des pays suivants :
Afrique du Sud, Rép. d’ Iran Thaïlande
Belgique Italie Turquie
Bulgarie Nouvelle-Zélande U.R.S.S.
Canada Pologne U.S.A.
Danemark Portugal Yougoslavie
France Suède
Inde Tchécoslovaquie
Le Comité Membre du pays suivant a désapprouvé le document pour des raisons
techniques :
Australie
0 Organisation Internationale de Normalisation, 1974 l
Imprimé en Suisse
ISO 2950-1974 (F)
NORME INTERNATIONALE
Classification en types, d’après
Charbons bruns et lignites -
la teneur en humidité totale et le rendement en goudron
‘I OBJET ET DOMAINE D’APPLICATION 4 INDICES DE CLASSIFICATION
4.1 Division des charbons bruns en classes
La présente Norme Internationale établit une classification
des charbons bruns et des lignites, en types, d’après la
Les charbons bruns sont tout d’abord divisés d’après leur
teneur en humidité totale et le rendement en goudron.
teneur en humidité totale, calculée sur la base «exempt de
cendres)), selon les classes suivantes indiquées dans le
Jusqu’à ce que des caractéristiques sû
...