ISO 4701-2017 铁矿石和直接还原铁--筛分法测定粒度分布 Iron ores and direct reduced iron — Determination of size distribution by sieving

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.th edition 2017-11 Iron ores and direct reduced iron — Determination of size distribution by sieving Minerais de fer et minerais de fer préréduits — Détermination de la granulométrie par tamisage Reference number ISO 4701:2017(E) ？ ISO 2017 ISO 4701:2017(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2017, Published in Switzerland All rights reserved. Unless