ISO 2596:2006 PDF

Iron ores — Determination of hygroscopic moisture in analytical samples — Gravimetric, Karl Fischer and mass-loss methods

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ISO 2596:2006

Iron ores — Determination of hygroscopic moisture in analytical samples — Gravimetric, Karl Fischer and mass-loss methods

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 32
Дата публикации:: 10 мая 2006 г.
Издание:: ISO IS 2596 edition 5 version 1
ICS:: 73.060.10

Язык документа:

ruen

Срок поставки:6 раб. дн. (перевод)

Цена:480 €

Описание (английский):

ISO 2496:2006 specifies the following four test methods for the determination of the hygroscopic moisture content of test samples: Method 1 -- Gravimetric method; Method 2 -- Karl Fischer volumetric method; Method 3 -- Karl Fischer coulometric method; Method 4 -- Mass-loss method. Any of these methods is applicable wherever the analytical value of a chemical constituent is to be calculated to a dried sample basis in the following ore types. Processed ores containing metallic iron (direct reduced iron). Natural or processed ores in which the sulfur content is greater than 0,2 % (mass fraction). Natural or processed ores in which the combined water is greater than 2,5 % (mass fraction). Any of these methods is applicable to a concentration range of 0,05 % (mass fraction) to 4,5 % (mass fraction) hygroscopic moisture.

Технические детали

Технический комитет: ISO/TC 102/SC 2 - Chemical analysis
SKU: ISO 2596:2006

Abstract

Overview

ISO 2596:2006 specifies standardized test methods for the determination of hygroscopic moisture in analytical samples of iron ores. The standard defines four accepted techniques - gravimetric, Karl Fischer volumetric, Karl Fischer coulometric, and mass-loss methods - for reporting moisture on a dried-sample basis. ISO 2596:2006 applies to iron ore types where direct determination of hygroscopic moisture is required (for example, processed ores containing metallic iron, ores with sulfur > 0.2% mass fraction, or ores with combined water > 2.5% mass fraction) and covers a hygroscopic moisture concentration range of 0.05% to 4.5% mass fraction.

Key topics and technical requirements

Four test methods:
- Method 1 - Gravimetric: moisture evolved at 105 °C ± 2 °C in a drying tube with dry nitrogen sweep (100–200 ml/min); evolved water collected in an absorption tube (e.g., anhydrous magnesium perchlorate) and quantified by mass increase.
- Method 2 - Karl Fischer volumetric: titration-based determination following ISO Karl Fischer practices.
- Method 3 - Karl Fischer coulometric: high-sensitivity coulometric titration for low moisture levels.
- Method 4 - Mass-loss: direct determination by loss of mass on drying under specified conditions.
Sampling and sample preparation: provisions for laboratory sampling and preparation of test portions to ensure representative, reproducible results.
Apparatus and reagents: e.g., use of anhydrous magnesium perchlorate as desiccant, aluminium calcium silicate molecular sieves (dried at 400 °C for 4 h) and requirements to control background moisture and blank determinations.
Performance range: methods are validated for the 0.05–4.5% hygroscopic moisture range; procedures include system checks, blank and check tests, and calculations for moisture content and correction of analytical test-portion mass.

Applications and users

ISO 2596:2006 is intended for:

Metallurgical and mining laboratories performing chemical analysis of iron ores.
Quality control and analytical chemists calculating constituents on a dry-sample basis.
Processing plants and direct reduced iron (DRI) producers where moisture affects downstream calculations and product specification.
Situations where standard drying of samples may give erroneous results due to ore type (e.g., high sulfur, high combined water, or metallic iron content).

Using ISO 2596:2006 ensures consistent, comparable moisture results across labs and supports accurate chemical constituent reporting on a dry basis.

Related standards

ISO 760 - Determination of water - Karl Fischer method (general guidance)
ISO 3082 - Iron ores - Sampling and sample preparation procedures
ISO 3087, ISO 7764 - referenced for related reporting or alternate procedures

Keywords: ISO 2596:2006, iron ores, hygroscopic moisture, moisture determination, Karl Fischer, gravimetric method, mass-loss method, analytical samples.

Overview

Key topics and technical requirements

Four test methods:
- Method 1 - Gravimetric: moisture evolved at 105 °C ± 2 °C in a drying tube with dry nitrogen sweep (100–200 ml/min); evolved water collected in an absorption tube (e.g., anhydrous magnesium perchlorate) and quantified by mass increase.
- Method 2 - Karl Fischer volumetric: titration-based determination following ISO Karl Fischer practices.
- Method 3 - Karl Fischer coulometric: high-sensitivity coulometric titration for low moisture levels.
- Method 4 - Mass-loss: direct determination by loss of mass on drying under specified conditions.
Sampling and sample preparation: provisions for laboratory sampling and preparation of test portions to ensure representative, reproducible results.
Apparatus and reagents: e.g., use of anhydrous magnesium perchlorate as desiccant, aluminium calcium silicate molecular sieves (dried at 400 °C for 4 h) and requirements to control background moisture and blank determinations.
Performance range: methods are validated for the 0.05–4.5% hygroscopic moisture range; procedures include system checks, blank and check tests, and calculations for moisture content and correction of analytical test-portion mass.

Applications and users

ISO 2596:2006 is intended for:

Metallurgical and mining laboratories performing chemical analysis of iron ores.
Quality control and analytical chemists calculating constituents on a dry-sample basis.
Processing plants and direct reduced iron (DRI) producers where moisture affects downstream calculations and product specification.
Situations where standard drying of samples may give erroneous results due to ore type (e.g., high sulfur, high combined water, or metallic iron content).

Using ISO 2596:2006 ensures consistent, comparable moisture results across labs and supports accurate chemical constituent reporting on a dry basis.

Related standards

ISO 760 - Determination of water - Karl Fischer method (general guidance)
ISO 3082 - Iron ores - Sampling and sample preparation procedures
ISO 3087, ISO 7764 - referenced for related reporting or alternate procedures

Keywords: ISO 2596:2006, iron ores, hygroscopic moisture, moisture determination, Karl Fischer, gravimetric method, mass-loss method, analytical samples.

ISO 2596:2006 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Applications and users

Related standards

Похожие стандарты

Determination of water -- Karl Fischer method (General method)

Iron ores — Sampling and sample preparation procedures — Amendment 1

Iron ores — Determination of moisture content of a lot

Iron ores — Preparation of predried test samples for chemical analysis