ISO 18708:2025 PDF

Solid recovered fuels — Determination of bulk density

Название (английский):

ISO 18708:2025

Solid recovered fuels — Determination of bulk density

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 24
Дата публикации:: 22 октября 2025 г.
Издание:: ISO IS 18708 edition 1 version 1
ICS:: 75.160.10

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Описание (английский):

This document specifies a method for determining the bulk density of solid recovered fuels (SRF) by the use of a standard measuring container. This method is applicable to all SRFs with a nominal top size of particle less than 1/3 of the container diameter specified in this document.

Технические детали

Технический комитет: ISO/TC 300 - Solid recovered materials, including solid recovered fuels
SKU: ISO 18708:2025

Abstract

Overview

ISO 18708:2025 specifies a standardized laboratory method to determine the bulk density of solid recovered fuels (SRF) using a standard measuring container. The method applies to SRF materials whose nominal top particle size is less than one third of the selected container diameter. Results are reported as mass per standard volume and accompanied by the determined moisture content to enable comparable, actionable data for sampling, transport, storage and energy calculations.

Key topics and technical requirements

Scope & principle
- Bulk density = mass of the test portion / volume of the filled container under specified conditions.
- Densification is achieved by controlled shock exposure before weighing.
Standard measuring containers
- Large: ~50 L (inner Ø 360 mm, height 491 mm); volume tolerance ±2%
- Medium: ~20 L (inner Ø 265 mm, height 362 mm); volume tolerance ±2%
- Small: ~5 L (inner Ø 167 mm, height 228 mm); volume tolerance ±2%
- Containers must be cylindrical, shock-resistant, smooth-surfaced, waterproof and maintain shape.
Instruments & equipment
- Scales: nearest 10 g for large/medium containers; nearest 1 g for small container.
- Scantling (for levelling) and a wooden OSB board (for shock exposure).
Sample handling
- Sampling per ISO 21645 and sample preparation per ISO 21646.
- Test portion volume must exceed container volume by ≥30%.
- Container volume is determined by weighing filled with water and converting to litres.
Particle size and drop-height rules
- Method applies when nominal top size

Overview

Key topics and technical requirements

Scope & principle
- Bulk density = mass of the test portion / volume of the filled container under specified conditions.
- Densification is achieved by controlled shock exposure before weighing.
Standard measuring containers
- Large: ~50 L (inner Ø 360 mm, height 491 mm); volume tolerance ±2%
- Medium: ~20 L (inner Ø 265 mm, height 362 mm); volume tolerance ±2%
- Small: ~5 L (inner Ø 167 mm, height 228 mm); volume tolerance ±2%
- Containers must be cylindrical, shock-resistant, smooth-surfaced, waterproof and maintain shape.
Instruments & equipment
- Scales: nearest 10 g for large/medium containers; nearest 1 g for small container.
- Scantling (for levelling) and a wooden OSB board (for shock exposure).
Sample handling
- Sampling per ISO 21645 and sample preparation per ISO 21646.
- Test portion volume must exceed container volume by ≥30%.
- Container volume is determined by weighing filled with water and converting to litres.
Particle size and drop-height rules
- Method applies when nominal top size

ISO 18708:2025 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Похожие стандарты

Solid recovered fuels - Methods for sampling (ISO 21645:2021)

Solid recovered fuels - Sample preparation (ISO 21646:2022)

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