铁矿石和直接还原铁.筛分法测定粒度分布

[中文适用范围]： 本文件规定了通过使用孔径为 36 µm 或更大的筛子筛分铁矿石和直接还原铁（不包括压块铁）来测定粒度分布的方法。 粒度分布以质量和百分比质量表示，通过或保留在选定的筛子上。 本文件的目的是为涉及尺寸确定的铁矿石和直接还原铁的任何测试提供基础，供缔约方在这些材料的销售和购买中使用。 当本文件用于比较目的时，有关各方将就所采用的详细方法的选择达成一致，以消除后续争议的根源。 [外文原描述]： This document specifies the methods to be employed for determination of size distributions by sieving of iron ore and direct reduced iron (excluding briquetted iron), utilizing sieves having aperture sizes of 36 µm or larger. The size distribution is expressed in terms of mass and percentage mass, passed or retained on selected sieves. The purpose of this document is to provide a basis for any testing of iron ore and direct reduced iron involving size determination for use by contracting parties in the sale and purchase of these materials. When this document is used for comparative purposes, the concerned parties will agree on the selection of the detailed method to be employed in order to eliminate sources of subsequent controversy.