Solid mineral fuels. Anthracite. Determination of moisture in the sample for general analysis by drying in nitrogen

This standard establishes the method for determining the moisture content in general analytical samples of anthracite, a type of solid mineral fuel, using nitrogen drying. The procedure outlines the specific experimental conditions and equipment requirements necessary to ensure accurate and reproducible results. It defines the principles of operation where nitrogen is employed as the drying medium to remove moisture from the coal sample without causing oxidation or other chemical changes. The standard details the sample preparation steps, the drying temperature, the duration of the process, and the calculation methods for expressing the moisture content as a percentage. This approach is designed to be applicable across various facilities handling anthracite for analysis purposes. By adhering to these guidelines, laboratories can maintain consistency in their analytical data. The method covers the necessary safety precautions during sample handling and the use of specialized drying apparatus. It serves as a technical reference for quality control and scientific measurement within the industry dealing with solid mineral fuels.