ISO 589-1981 rus PDF

Full title and description

St ISO 589-1981 rus — Russian-language edition/translation of ISO 589:1981, "Hard coal — Determination of total moisture". This document is a Russian-language presentation of the 1981 ISO second edition describing laboratory methods for measuring total moisture content in hard coals.

Abstract

ISO 589:1981 specifies two methods for determining total moisture in hard coal: (A) a two-stage toluene-reflux (Dean and Stark style) extraction where moisture is entrained by toluene vapour and collected in a graduated receiver, and (B) a single-stage oven-drying method at 105–110 °C in a stream of nitrogen with moisture calculated from loss of mass. The 1981 edition has been withdrawn and later revised versions (2003, 2008) provide updated procedures and confirmations.

General information

• Status: Withdrawn (original 1981 edition withdrawn; revised in later editions).
• Publication date: October 1981 (Edition 2).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 73.040 — Solid mineral fuels (hard coal).
• Edition / version: Edition 2 (1981).
• Number of pages: 6 pages.

Scope

This standard applies to the determination of the total moisture content of hard coals. It describes both a solvent-extraction (toluene reflux) procedure suitable for entraining and measuring water liberated from coal and an oven-drying procedure in an inert (nitrogen) atmosphere for samples where oxidation must be avoided. The methods are intended for laboratory analysis of representative samples of hard coal and for reporting moisture as a percentage of sample mass.

Key topics and requirements

• Two accepted measurement methods: toluene-reflux (entrainment and collection of water) and oven-drying in nitrogen.
• Specified drying temperature range for oven method: 105–110 °C.
• Guidance on suitability: nitrogen drying suitable for all hard coals; air drying may be unsuitable for oxidation-prone coals (clarified in later revisions).
• Requirements for apparatus (reflux flask, condenser with graduated receiver) and expression of results as percentage moisture.
• Notes on method selection and potential systematic differences between methods depending on coal rank (expanded in later editions).

Typical use and users

Laboratories performing proximate analysis of coal, coal quality control personnel, mining and coal processing companies, research institutions studying fuel properties, and standards or test houses that require consistent moisture determination methods for trade or specification purposes. The Russian translation is typically used by Russian-speaking laboratories and organizations that prefer or require documentation in Russian.

Related standards

ISO 589:1981 has been revised by ISO 589:2003 and ISO 589:2008, which update and clarify methods (including options for drying in air versus nitrogen and procedural details). Other related standards in coal analysis include ISO standards on proximate and ultimate analysis and sample preparation under ISO/TC 27.

Keywords

hard coal, total moisture, moisture determination, toluene reflux, oven-drying, nitrogen atmosphere, coal analysis, ISO 589, Russian translation.

FAQ

Q: What is this standard?

A: ISO 589:1981 is an international standard titled "Hard coal — Determination of total moisture" (Edition 2, 1981); "St ISO 589-1981 rus" refers to a Russian-language version or presentation of that 1981 text.

Q: What does it cover?

A: It covers two laboratory methods for measuring total moisture in hard coal — a toluene-reflux entrainment/collection technique and an oven-drying method in nitrogen — including apparatus, procedure and expression of results.

Q: Who typically uses it?

A: Coal-testing laboratories, quality control teams in mining and coal processing, research organizations, and any parties requiring standardized moisture results; the Russian edition is mainly used by Russian-speaking users.

Q: Is it current or superseded?

A: ISO 589:1981 (Edition 2) has been withdrawn and superseded by later versions (ISO 589:2003 and the current ISO 589:2008). Users should refer to ISO 589:2008 for the most up-to-date validated procedures.

Q: Is it part of a series?

A: It is part of the body of ISO standards for coal and coke analysis developed under ISO/TC 27; successive editions (1974, 1981, 2003, 2008) represent that series' evolution for moisture determination.

Q: What are the key keywords?

A: Hard coal, moisture, total moisture, toluene-reflux, oven-drying, nitrogen drying, coal analysis, ISO 589.