YS/T 820.24-2012 English PDF (YST820.24-2012)

This part of YS/T 820 specifies the method for the determination of hygroscopic moisture content in the analysis of laterite nickel ores. This part applies to the determination of the hygroscopic moisture content in the analysis of laterite nickel ores, the determination range is 0.10%~7.00%. 2 Method summary The sample is dried at 105 ¡ãC~110 ¡ãC, and the hygroscopic moisture content is calculated by the decrement method. 3 Apparatus 3.1 Weighing bottle: The diameter is not less than 5 cm, and it is equipped with a tight ground cap. 3.2 Drying oven: It can keep the temperature at 105 ¡æ¡À5 ¡æ. 4 Samples The particle size of the sample shall be less than 160 ¦Ìm, and the sample shall have been balanced in the air. 5 Analysis steps 5.1 Samples Pre-dry the weighing bottle (3.1) in a drying oven (3.2) at 105 ¡ãC. After drying for 1 hour, take it out, cool it in a desiccator for 20-30 minutes, and weigh it. Weigh 1.0 g of the air-balanced sample into the weighing bottle, accurate to 0.0002 g, and spread it evenly in the weighing bottle. YS/T 820.24-2012 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery Page 7 of 8 5.2 Measurement times Two determinations shall be carried out independently, and the average value is taken as the result. 5.3 Determination Place the open weighing bottle containing the