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GB/T 6730.1-2016Iron ores -- Preparation of pre-dried test samples for chemical analysis (English PDF)

铁矿石分析用预干燥试样的制备

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Level / Type

National · Recommended

Issue date

February 24, 2016

Implementation date

November 1, 2016

Scope

GB/T 6730.1-2016 is the English-translated version of 铁矿石分析用预干燥试样的制备.

GB/T 6730.1-2016 is the Chinese standard "Iron ores -- Preparation of pre-dried test samples for chemical analysis". Its scope clause reads: This Part of GB/T 6730 specifies the preparation of predried test samples for the chemical analysis of iron ores.

This Part is applicable to natural iron ores, iron concentrates and agglomerates, and includes the preparation of predried test samples in sintered products for chemical analysis.

This Part does not apply to direct reduced iron test samples containing metallic iron, natural or processed iron ore test samples containing more than 0.2% (mass fraction) of sulfur or more than 2.5% (mass fraction) of chemically combined water.

The above-mentioned test samples shall adopt GB/T 6730.3. NOTE 1: loss on ignition can be used to estimate the content of chemically combined water. NOTE 2: for all samples, GB/T 6730.3 can be adopted to determine the moisture absorption capacity. Its clauses include principle; instruments and materials.

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Document preview — GB/T 6730.1-2016

National Standard of the People's Republic of China

ICS: 73.060.10
Classification: D 31

Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

Foreword3
1 Scope5
2 Normative References5
3 Principle5
4 Instruments and Materials5
5 Test Samples6
6 Operating Procedures6

1 Scope

This Part of GB/T 6730 specifies the preparation of predried test samples for the chemical analysis of iron ores.

This Part is applicable to natural iron ores, iron concentrates and agglomerates, and includes the preparation of predried test samples in sintered products for chemical analysis.

NOTE 1: loss on ignition can be used to estimate the content of chemically combined water.

NOTE 2: for all samples, GB/T 6730.3 can be adopted to determine the moisture absorption capacity.

2 Normative References

The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.

GB/T 10322.1 Iron Ores - Sampling and Sample Preparation Procedures (GB/T 10322.1-

2014, ISO 3082:2009, IDT)

3 Principle

At 105 °C, dry the test samples to a constant weight.

4 Instruments and Materials

4.1 Balance: with a division value of 0.0001 g.

4.2 Drying oven: the temperature can be controlled at 105 °C ± 2 °C.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 6 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 10322.1Iron ores - Sampling and sample preparation procedures

Cited by

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