ISO 1018-1975 rus PDF

Full title and description

ISO 1018:1975 — Hard coal — Determination of moisture‑holding capacity. This international standard (Edition 1, 1975) specifies a laboratory method to determine the maximum moisture that hard coal can hold under defined conditioning and drying procedures; commonly distributed as a short technical report (PDF) and available in some national catalogues and translations.

Abstract

The standard describes conditioning coal at a controlled relative humidity (96 % RH at 30 °C) until equilibrium and then drying to constant mass at 105–110 °C. Conditioning may be carried out at atmospheric or reduced pressure. The moisture‑holding capacity is reported as a percentage by mass of the conditioned moist coal.

General information

• Status: Withdrawn (original 1975 edition withdrawn; later revisions published).
• Publication date: 1975-11 (Edition 1).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 73.040 — Coals.
• Edition / version: Edition 1 (1975).
• Number of pages: 6 pages (original document).

Scope

ISO 1018:1975 specifies a method for determining the moisture‑holding capacity of hard coal: conditioning samples to a defined humidity/temperature environment and then drying to constant mass to calculate the retained moisture as a percentage. The procedure sets the conditioning environment (96 % RH at 30 °C) and the drying temperature range (105–110 °C), and allows conditioning at atmospheric or reduced pressure.

Key topics and requirements

• Conditioning of coal at 96 % relative humidity and 30 °C until equilibrium is reached.
• Drying procedure to constant mass at 105–110 °C to determine moisture lost.
• Expression of moisture‑holding capacity as percentage by mass of conditioned moist coal.
• Permitted conditioning under atmospheric or reduced pressure (method flexibility).
• Links/relationships to later revisions that reference alternative test methods (see Related standards).

Typical use and users

Used historically by coal testing laboratories, mining companies, fuel and energy analysts, quality control units in coal processing, and standards bodies to quantify the moisture behaviour of hard coal for trading, combustion and processing considerations. In practice today, laboratories reference the latest ISO revision or recognized equivalent test methods for routine analysis.

Related standards

ISO 1018:1975 has been superseded by later revisions of ISO 1018 (notably editions published in 2019 and 2023). More recent editions reference or make use of ASTM D1412 as an alternative method for determining moisture‑holding capacity. Users should refer to the most recent ISO 1018 edition for current procedural references.

Keywords

ISO 1018, hard coal, moisture‑holding capacity, moisture content, conditioning, relative humidity, drying to constant mass, ASTM D1412, coal testing, fuel analysis.

FAQ

Q: What is this standard?

A: ISO 1018:1975 is the first edition (1975) of the international method for determining the moisture‑holding capacity of hard coal, setting conditioning and drying parameters to measure the maximum retained moisture.

Q: What does it cover?

A: It covers sample conditioning at 96 % relative humidity and 30 °C (or equivalent conditioning arrangements), drying to constant mass at 105–110 °C, and calculation/reporting of moisture‑holding capacity as a mass percentage of the conditioned sample.

Q: Who typically uses it?

A: Coal testing and analytical laboratories, mining and fuel companies, quality control personnel, standards organizations, and researchers concerned with coal moisture behaviour and fuel specifications.

Q: Is it current or superseded?

A: ISO 1018:1975 is withdrawn and has been superseded by later editions of ISO 1018 (2019 and 2023). For current testing practice, obtain and follow the latest ISO 1018 edition.

Q: Is it part of a series?

A: ISO 1018 is a stand‑alone method within the coal testing/coal and coke standards area (ICS 73.040), but it sits alongside related ISO standards on sampling and analysis of coal and coke; subsequent editions form the sequence of revisions for this test method.

Q: What are the key keywords?

A: Hard coal, moisture‑holding capacity, moisture content, conditioning, relative humidity, drying to constant mass, ISO 1018.