ISO 562:2010 PDF

Hard coal and coke — Determination of volatile matter

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Title (English):

ISO 562:2010

Hard coal and coke — Determination of volatile matter

Document status:: Withdrawn
Format:: Electronic (PDF)
Number of pages:: 8
Publication date:: June 4, 2010
Edition:: ISO IS 562 edition 3 version 1
ICS:: 73.040

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Description (English):

ISO 562:2010 specifies a method of determining the volatile matter of hard coal and of coke. It is not applicable to brown coals and lignites.

Technical details

Technical committee: ISO/TC 27/SC 5 - Methods of analysis
SKU: ISO 562:2010

Abstract

Overview

ISO 562:2010 specifies a standardized laboratory method for the determination of volatile matter in hard coal and coke. The method measures the mass loss (excluding moisture loss) when a ground test portion is heated out of contact with air under controlled conditions. ISO 562:2010 is not applicable to brown coals and lignites and is intended for reproducible coal analysis and quality assessment.

Key topics and technical requirements

Scope: Applies to hard coal and coke; excludes brown coal and lignites.
Principle: Volatile matter = mass loss on heating at 900 °C (±5 °C) for 7 minutes, corrected for moisture determined in parallel.
Sample preparation: General analysis test sample ground to pass a 212 µm sieve and equilibrated to laboratory moisture.
Apparatus:
- Electric furnace with a uniform 900 °C zone and rapid temperature recovery (regain within 4 min after insertion).
- Unsheathed thermocouple (≤1 mm wire) for temperature verification; optional sheathed thermocouple for permanent installation.
- Fused silica crucible and well‑fitting lid (horizontal clearance ≤ 0.5 mm) - lid fit is critical to exclude air.
- Crucible stands for single or multiple determinations and a balance reading to 0.1 mg.
Procedure:
- Preheat empty crucibles at 900 °C ±5 °C, cool and tare.
- Weigh ~1.0 g test portion (±0.1 g) into the crucible, replace lid, and insert into the cold stand then furnace for 7 min ±5 s.
- For coke, add 2–4 drops of cyclohexane to charged crucibles to prevent oxidation before heating.
- Cool and weigh; calculate volatile matter corrected for moisture (ISO 11722 for coal moisture, ISO 687 for coke moisture).
Results & precision:
- Report mean of duplicate determinations to nearest 0.1% (air‑dried basis).
- Repeatability and reproducibility limits are specified (e.g., hard coal repeatability 0.3% absolute for V

Related standards

Mentioned in the description and other ISO standards

Overview

Key topics and technical requirements

Scope: Applies to hard coal and coke; excludes brown coal and lignites.
Principle: Volatile matter = mass loss on heating at 900 °C (±5 °C) for 7 minutes, corrected for moisture determined in parallel.
Sample preparation: General analysis test sample ground to pass a 212 µm sieve and equilibrated to laboratory moisture.
Apparatus:
- Electric furnace with a uniform 900 °C zone and rapid temperature recovery (regain within 4 min after insertion).
- Unsheathed thermocouple (≤1 mm wire) for temperature verification; optional sheathed thermocouple for permanent installation.
- Fused silica crucible and well‑fitting lid (horizontal clearance ≤ 0.5 mm) - lid fit is critical to exclude air.
- Crucible stands for single or multiple determinations and a balance reading to 0.1 mg.
Procedure:
- Preheat empty crucibles at 900 °C ±5 °C, cool and tare.
- Weigh ~1.0 g test portion (±0.1 g) into the crucible, replace lid, and insert into the cold stand then furnace for 7 min ±5 s.
- For coke, add 2–4 drops of cyclohexane to charged crucibles to prevent oxidation before heating.
- Cool and weigh; calculate volatile matter corrected for moisture (ISO 11722 for coal moisture, ISO 687 for coke moisture).
Results & precision:
- Report mean of duplicate determinations to nearest 0.1% (air‑dried basis).
- Repeatability and reproducibility limits are specified (e.g., hard coal repeatability 0.3% absolute for V

ISO 562:2010 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

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