ISO 1018:2019 pdf download

ISO 1018:2019 pdf download

ISO 1018:2019 pdf download.Hard coal — Determination of moisture-holding capacity
1 Scope
This document gives reference to ASTM D1412 as a method of determining the moisture-holding capacity of hard coals.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ASTM D1412, Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30°C
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
4 Sampling
Samples should be collected following the specifications given in ISO 13909, ISO 14180 or ISO 18283, as applicable.
5 Principle
The method is specified for wetted and unwetted coal. Coal is wetted by immersing in water and the subsequent removal of excess water. The coal is brought to equilibrium over a saturated solution of potassium sulfate at 30 °C. The conditioning of the coal is carried out under reduced pressure. Afterwards, the sample is dried to constant mass at 105 °C. The moisture-holding capacity is reported as per cent mass fraction of the conditioned moist coal. All the related equipment requirements, sample preparation, test procedure and reporting shall be in accordance with ASTM D 1412.