ISO 21646:2022 固体回收燃料 样品制备

标准编号：ISO 21646:2022

中文名称：固体回收燃料 样品制备

英文名称：Solid recovered fuels — Sample preparation

发布日期：2022-05

标准范围

本文件规定了样品制备方法，以确保样品在整个制备过程中的代表性，以生产一般分析样品。可从实验室或一般分析样品中提取合适的测试部分，并根据相应分析程序中规定的具体要求用于分析。本文件规定了适用于以下各项的正确样品制备顺序:a） 复合样品，以产生实验室样品（考虑大块固体回收燃料）；b） 整个测试程序中的每个子采样步骤；c） 实验室样品，以获得合适的试验部分；d） 在物理分析、化学分析或两者（例如提取、消化、分析测定）之前，确保根据样品制备计划提取的测试部分具有代表性。本文件中规定的方法可用于样品制备，例如，当测试样品的体积密度、生物量含量测定、机械耐久性、粒度分布、水分含量、灰分含量、灰熔融行为、热值、化学成分、杂质和自蔓延性时-加热性能。这些方法不适用于测试桥接性能所需的超大样本。

This document specifies methods for sample preparation to ensure representativeness of the samples throughout the preparation procedures to produce general analysis samples. Suitable test portions can be taken from the laboratory or general analysis samples and used for analysis according to the specific requirements defined in the corresponding analytical procedures.This document specifies the correct sample preparation sequence to be applied to:a) the composite sample, in order to produce a laboratory sample (taking into account large pieces of solid recovered fuel);b) each sub-sampling step throughout the testing programme;c) the laboratory sample, in order to obtain suitable test portions;d) ensure the representativeness of the test portions that have been taken according to the sample preparation plan, prior to physical analysis, chemical analysis or both (e.g. extractions, digestion, analytical determinations).The methods specified in this document can be used for sample preparation, for example, when the samples are to be tested for bulk density, biomass content determination, mechanical durability, particle size distribution, moisture content, ash content, ash melting behaviour, calorific value, chemical composition, impurities and self-heating properties. The methods are not intended to be applied to the very large samples required for the testing of bridging properties.

标准预览图