ISO 7764-2006 铁矿石.化学分析用预干燥试样的制备

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                   【英文标准名称】:     Iron ores - Preparation of predried test samples for chemical analysis            【原文标准名称】:     铁矿石.化学分析用预干燥试样的制备            【标准号】:     ISO 7764-2006            【标准状态】:     现行            【国别】:     国际            【发布日期】:     2006-05    【实施或试行日期】: 【发布单位】: 国际标准化组织(IX-ISO)【起草单位】: ISO/TC 102【标准类型】: ()【标准水平】: ()【中文主题词】: 化学分析和试验;铁矿石;矿物;金属矿物;试样制备;试验【英文主题词】: Chemical analysis and testing;Iron ores;Minerals;Ores;Specimen preparation;Testing;Tests【摘要】: This International Standard specifies a method for the preparation of predried test samples of natural iron ores, and iron ore concentrates and agglomerates, including sinter products, which are to be used for the determination of analytical values of constituents on a dry basis.The method is not applicable to the following types of ores:a)     processed ores containing metallic iron (direct-reduced iron);b)     natural or processed ores in which the mass fraction of sulfur is higher than 0,2 %;c)     natural or processed ores in which the content of combined water is higher than 2,5 % by mass.NOTE 1      Alternatively, the loss on ignition may be determined as an estimate of the combined water content.Where this method is not applicable, ISO 2596:1994, Iron ores — Determination of hygroscopic moisture in analytical samples — Gravimetric and Karl Fischer methods is used.NOTE 2      A laboratory may elect to use ISO 2596 for all samples to determine the dry sample mass.【中国标准分类号】: D31【国际标准分类号】: 73_060_10【页数】: 6P.;A4【正文语种】: 英语