ISO 501:2025 PDF

Hard coal — Determination of the crucible swelling number

Название (английский):

ISO 501:2025

Hard coal — Determination of the crucible swelling number

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 1 мая 2025 г.
Издание:: ISO IS 501 edition 5 version 1
ICS:: 73.040

Тип поставки:

Full version105 €Read online 24h10 €Read online 72h15 €

Язык документа:

ruen

Срок поставки:2 раб. дн. (перевод)

Цена:105 €

Описание (английский):

This document specifies a method for determining the swelling properties of hard coal when heated in a covered crucible. NOTE The "crucible swelling number" (CSN) is also known as the "free swelling index" (FSI).

Технические детали

Технический комитет: ISO/TC 27/SC 5 - Methods of analysis
SKU: ISO 501:2025

Abstract

Overview

ISO 501:2025 specifies a standardized laboratory method for determining the crucible swelling number (CSN) - also known as the free swelling index (FSI) - of hard coal. The test quantifies how a ground coal sample behaves (swells and cokes) when heated in a covered silica crucible under controlled heating and atmosphere. The CSN/FSI is a widely used indicator of coal coking properties and is important for coal characterization, quality control and process selection.

Key topics and technical requirements

Sample preparation
- Use the general analysis test sample prepared per ISO 13909-4 and ISO 18283.
- Grind to pass a 212 µm sieve; avoid over-pulverization and ring mills.
- Perform test within 24 h of grinding to avoid oxidation.
- Test sample mass: 1,00 g to 1,01 g.
Apparatus
- Silica crucible and lid with specified dimensions (e.g., external height 26 mm ± 1 mm, top diameter 41 mm ± 1 mm, capacity 16–17.5 ml, mass 12 g ± 1 g).
- Pierced lid and thermocouple for temperature monitoring.
- Burner (Teclu or Meker) or alternative electrical heating if equivalent to gas method (within ±0,5 CSN unit).
- Draught shield, silica triangle support, 500 g mass and sight tube for profile comparison.
Heating profile and conditioning
- Empty crucible base temperature: 800 °C ± 10 °C after 1.5 min, 820 °C ± 5 °C after 2.5 min.
- Precondition apparatus and check temperature profile regularly.
Procedure and result classification
- Heat coal in covered crucible until volatile flame dies out (minimum 2.5 min), cool, and examine residue.
- Classify results as 0, 0.5, 1, 1.5–9, or >9 based on coke button form and standard profile templates.
- Perform tests in triplicate (or up to 5/10 depending on spread rules); report mean to nearest 0.5 unit.
Precision
- Repeatability: maximum acceptable difference for 3 determinations = 0.5 unit.
- Reproducibility: for 5 determinations, maximum acceptable difference between labs = 1 unit.
Safety
- The standard includes a safety warning; users must establish appropriate health and safety practices.

Applications and users

ISO 501:2025 is used by:

Coal laboratories and quality control teams for coal characterization, coking potential assessment and blending decisions.
Coke producers and steelmakers assessing feedstock suitability for coke ovens.
Researchers and standards bodies comparing coal swelling behavior.
Regulatory or procurement teams specifying coal quality.

Practical benefits include consistent CSN/FSI measurement for process control, product specification, and comparative testing across laboratories.

Related standards

ISO 13909-4 - Coal and coke - Mechanical sampling - Part 4: Preparation of test samples of coal
ISO 18283 - Coal and coke - Manual sampling

Keywords: ISO 501:2025, crucible swelling number, CSN, free swelling index, FSI, hard coal testing, coal coking properties, crucible test, coke button, coal laboratory standard.

Overview

Key topics and technical requirements

Sample preparation
- Use the general analysis test sample prepared per ISO 13909-4 and ISO 18283.
- Grind to pass a 212 µm sieve; avoid over-pulverization and ring mills.
- Perform test within 24 h of grinding to avoid oxidation.
- Test sample mass: 1,00 g to 1,01 g.
Apparatus
- Silica crucible and lid with specified dimensions (e.g., external height 26 mm ± 1 mm, top diameter 41 mm ± 1 mm, capacity 16–17.5 ml, mass 12 g ± 1 g).
- Pierced lid and thermocouple for temperature monitoring.
- Burner (Teclu or Meker) or alternative electrical heating if equivalent to gas method (within ±0,5 CSN unit).
- Draught shield, silica triangle support, 500 g mass and sight tube for profile comparison.
Heating profile and conditioning
- Empty crucible base temperature: 800 °C ± 10 °C after 1.5 min, 820 °C ± 5 °C after 2.5 min.
- Precondition apparatus and check temperature profile regularly.
Procedure and result classification
- Heat coal in covered crucible until volatile flame dies out (minimum 2.5 min), cool, and examine residue.
- Classify results as 0, 0.5, 1, 1.5–9, or >9 based on coke button form and standard profile templates.
- Perform tests in triplicate (or up to 5/10 depending on spread rules); report mean to nearest 0.5 unit.
Precision
- Repeatability: maximum acceptable difference for 3 determinations = 0.5 unit.
- Reproducibility: for 5 determinations, maximum acceptable difference between labs = 1 unit.
Safety
- The standard includes a safety warning; users must establish appropriate health and safety practices.

Applications and users

ISO 501:2025 is used by:

Coal laboratories and quality control teams for coal characterization, coking potential assessment and blending decisions.
Coke producers and steelmakers assessing feedstock suitability for coke ovens.
Researchers and standards bodies comparing coal swelling behavior.
Regulatory or procurement teams specifying coal quality.

Practical benefits include consistent CSN/FSI measurement for process control, product specification, and comparative testing across laboratories.

Related standards

ISO 13909-4 - Coal and coke - Mechanical sampling - Part 4: Preparation of test samples of coal
ISO 18283 - Coal and coke - Manual sampling

Keywords: ISO 501:2025, crucible swelling number, CSN, free swelling index, FSI, hard coal testing, coal coking properties, crucible test, coke button, coal laboratory standard.

ISO 501:2025 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Похожие стандарты

Hard coal and coke — Mechanical sampling — Part 4: Coal — Preparation of test samples

Tracked Changes. Coal and coke. Manual sampling.

Water quality — Biological classification of rivers — Part 1: Guidance on the interpretation of biological qu…

Standard Practice for Use of a Radiochromic Liquid Dosimetry System (Withdrawn 2020)

Standard Practice for Dosimetry in Gamma Irradiation Facilities for Food Processing (Withdrawn 2013)

Standard Practice for Dosimetry in Electron Beam and X-Ray (Bremsstrahlung) Irradiation Facilities for Food P…

Standard Practice for Dosimetry in Radiation Processing

Standard Terminology for Additive Manufacturing—Coordinate Systems and Test Methodologies