ISO 1953:2015 PDF

Name: ISO 1953:2015 — Hard coal — Size analysis by sieving
SKU: ISO 1953:2015
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Hard coal — Size analysis by sieving

Название (английский):

ISO 1953:2015

Hard coal — Size analysis by sieving

Статус документа:: Отменён
Формат:: Электронный (PDF)
Количество страниц:: 18
Дата публикации:: 10 ноября 2015 г.
Издание:: ISO IS 1953 edition 3 version 1
ICS:: 73.040

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Описание (английский):

ISO 1953:2015 specifies reference methods for the size analysis of coal by manual sieving (wet or dry), using test sieves of aperture sizes between 125 mm and 45 μm. A guide to sampling is given in Annex A. This International Standard is applicable to all hard coals. It is not applicable to coke or other manufactured fuels. In the case of pulverized coal which has been ground so that a high proportion passes through the test sieve of smallest aperture size, the methods described in this International Standard will determine only the percentage oversize.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 1953:2015 - Hard coal - Size analysis by sieving - defines reference methods for determining the particle-size distribution of hard coal by manual sieving (wet or dry). The standard covers test sieves with nominal aperture sizes between 125 mm and 45 μm, gives guidance on sampling (Annex A) and includes procedural details, apparatus and result reporting. It applies to all hard coals (but not to coke or other manufactured fuels) and notes that for highly pulverized coal the method will only determine the percentage oversize.

Key topics and technical requirements

Scope and applicability: Reference methods for size analysis of hard coal using manual wet or dry sieving; limitations for pulverized coal and exclusion of manufactured fuels.

Sieve series and apertures: Recommended sieve series (e.g., 125, 90, 75, 63, 50, 45, 31.5, 22.4, 16, 11.2, 8, 5.6, 4, 2, 1 mm and wire-cloth sizes down to 45 μm). Guidance on supplementary sizes when needed.

Apparatus: Test sieves (ISO 3310 compliant), receivers, accurate weighing scale (to 0.1 %), trays, brush, vibratory shaker (for mechanical sieving), and for wet sieving: pressure-filter, Buchner funnel, filter paper and controlled oven.

Sampling and sample mass: Sampling methods per ISO 13909 / ISO 18283 and minimum gross/sample mass requirements (Table 1) to achieve target precisions (1 % or 2%).

Preparation and division: Drying limits (air-dry ≤ 40 °C) and procedures for dividing samples (mechanical dividers, flattened-heap or strip methods).

Procedures: Detailed step-by-step for dry sieving (including hand-placing for large fragments) and wet sieving (used when particles agglomerate). Notes on combining wet and dry sieving and the potential influence of soluble clays/shales on wet-sieve results.

Results and reporting: Express results as percentage mass retained on each sieve, calculation and graphical presentation conventions, and required test-report content.

Practical applications and users

ISO 1953:2015 is used for:

Quality control in coal preparation plants and screening operations

Design data and performance checks for crushing and screening equipment

Yield assessment of run-of-mine coals and product grading verification

Laboratory particle-size analysis in mining, power generation, and fuel supply chains

Primary users include coal testing laboratories, plant engineers, sampling technicians, equipment manufacturers and consultants involved in coal handling and preparation.

Related standards

ISO 1213-1 / ISO 1213-2 (vocabulary)

ISO 13909 (mechanical sampling)

ISO 18283 (manual sampling)

ISO 3310-1 / ISO 3310-2 (test sieve requirements)

Keywords: ISO 1953:2015, hard coal size analysis, sieving, test sieves, dry sieving, wet sieving, coal sampling, particle-size distribution, sieve aperture sizes.

ISO 1953:2015 PDF

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications and users

Related standards

Технические детали

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BS ISO 12132:2017

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SIST ISO 3310-2:2015

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