硫化铜, 铅, 锌和镍精矿. 分析样本中吸附水分含量的测定. 重量法

[中文适用范围]： 本国际标准规定了测定铜、铅、锌和镍硫化物精矿分析样品中吸湿水分含量的重量损失质量法。 该方法适用于不含挥发性有机浮选试剂（例如煤油）且吸湿水分含量在 0.05% (m/m) 至 2% (m/m) 之间的铜、铅、锌和镍硫化物精矿。 吸湿水分含量用于将分析结果从平衡水分水平校正到干基。 注：使用本国际标准测定吸湿水分含量的结果不应作为精矿样品分析的一部分进行报告。 当需要商业运输浓缩物的散装水分含量时，应使用 ISO 10251。 吸湿水分含量的测定和堆积水分含量的测定是相互关联的。 在这两次测定中，必须达到相同的干燥状态，以便确定批次的正确金属含量。 该方法不适用于易氧化的硫化物精矿（见6.3，注2）。 附件 A 列出了修改后的程序，可用于易氧化的硫化物精矿。 [外文原描述]： ISO 9599:2015 specifies a gravimetric loss-in-mass method for the determination of the hygroscopic moisture content in analysis samples of copper, lead, zinc, and nickel sulfide concentrates. The method is applicable to copper, lead, zinc, and nickel sulfide concentrates free from volatile organic flotation reagents, for example kerosene, and with hygroscopic moisture contents between 0,05 % (m/m) and 2 % (m/m). The hygroscopic moisture content is used to correct the analysis results from the equilibrated moisture level to the dry basis. NOTE The result of the determination of hygroscopic moisture content using this International Standard should not be reported as part of the analysis of a concentrate sample. Whenever the bulk moisture content of a commercial shipment of concentrate is required, ISO 10251 should be used. The determination of hygroscopic moisture content and the determination of bulk moisture content are connected with each other. In both determinations, the same state of dryness has to be achieved, in order to ascertain the correct metal content of a lot. This method is not applicable to sulfide concentrates that are susceptible to oxidation (see 6.3, note 2). Annex A sets out a modified procedure, which can be used for sulfide concentrates that are susceptible to oxidation.