ISO 11722:2013 PDF
Solid mineral fuels — Hard coal — Determination of moisture in the general analysis test sample by drying in nitrogen
Solid mineral fuels — Hard coal — Determination of moisture in the general analysis test sample by drying in nitrogen
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 5
- Дата публикации:
- 15 июля 2013 г.
- Издание:
- ISO IS 11722 edition 2 version 1
- ICS:
- 73.040
ISO 11722:2013 specifies a method for determining the moisture in the general analysis test sample of hard coal by drying in nitrogen.
Abstract
Overview
ISO 11722:2013 specifies a laboratory method for the determination of moisture in the general analysis test sample of hard coal by drying in a stream of nitrogen. The method provides a standardized procedure to obtain moisture values used to correct other analytical results (e.g., volatile matter and hydrogen) and to report results on a dry basis.
The method is applicable to equilibrated general analysis test samples and is designed to minimise rehydration or oxidation during drying by using moisture-free nitrogen and a minimum-free-space oven.
Key Topics
- Principle: A known mass of coal is heated in nitrogen at 105 °C to 110 °C until constant mass; moisture is the loss in mass.
- Reagent: Nitrogen, moisture-free, with an oxygen volume fraction
Технические детали
- Технический комитет
- ISO/TC 27/SC 5 - Methods of analysis
- SKU
- ISO 11722:2013
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