標準號：ISO 2596-2006
中文標準名稱：鐵礦石.分析試樣中吸濕水的測定.重量法、卡爾費舍爾法和質量虧損法
英文標準名稱：Iron ores - Determination of hygroscopic moisture in analytical samples - Gravimetric, Karl Fischer and mass-loss methods
標準類型：D30
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：D30
國際標準分類號：73.060.10
引用標準：ISO 760;ISO 3082
適用范圍：This International Standard specifies the following four test methods for the determination of the hygroscopic moisture content of test samples:Method 1 — Gravimetric method;Method 2 — Karl Fischer volumetric method;Method 3 — Karl Fischer coulometric method;Method 4 — Mass-loss method.Any of these methods is applicable wherever the analytical value of a chemical constituent is to be calculated to a dried sample basis in the following ore types.a) Processed ores containing metallic iron (direct reduced iron).b) Natural or processed ores in which the sulfur content is greater than 0,2 % (mass fraction).c) Natural or processed ores in which the combined water is greater than 2,5 % (mass fraction).Any of these methods is applicable to a concentration range of 0,05 % (mass fraction) to 4,5 % (mass fraction) hygroscopic moisture.NOTE 1 Where the reportable moisture content of a commercial consignment of ore is required, the procedure in ISO 3087 is used.NOTE 2 With natural or processed ores outside the field of application specified in a), b) or c), a determination of a constituent at any level of concentration may be conducted using any of these methods, or as specified in ISO 7764.NOTE 3 Alternatively, the loss or ignition content may be measured as an estimate of the combined water content.