GB/T 10322.7-2026Iron ores and direct reduced iron - Determination of size distribution by sieving (English PDF)
铁矿石和直接还原铁 粒度分布的筛分测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 25, 2026
Implementation date
December 1, 2026
Scope
GB/T 10322.7-2026 is the English-translated version of 铁矿石和直接还原铁 粒度分布的筛分测定.
Particle size is an important property of iron ore and direct reduced iron because it affects handling, charging and furnace performance. This standard specifies how size distribution is determined by sieving for iron ores and direct reduced iron. It is a recommended national standard within the iron ore testing series, of which this is Part 7.
Mining companies, steel mills, ports, commodity inspection agencies and independent laboratories that report size data for shipments will use it. Traders and buyers who write size analysis into contracts also benefit from a defined method that both parties can refer to.
The standard was issued on 25 May 2026 and comes into force on 1 December 2026. It replaces GB/T 10322.7-2016, so laboratories and quality systems that cite the previous edition should plan an update to the new reference.
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Document preview — GB/T 10322.7-2026
National Standard of the People's Republic of China
- ICS
- 73.060.10
- Classification
- D31
- Replacing
- GB/T 10322.7-2016
Issued by: State Administration for Market Regulation; Standardization Administration of China
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
Foreword
GB/T 10322.7-2026 is a recommended national standard (GB/T) of the People's Republic of China, issued on 25 May 2026 by the State Administration for Market Regulation and the Standardization Administration of China, with effect from 1 December 2026.
This edition replaces GB/T 10322.7-2016.
The document adopts an international standard (ISO or IEC).
It is under the responsibility of the China Iron and Steel Association.
Classification: ICS 73.060.10; CCS D31.
1 Scope
Particle size is an important property of iron ore and direct reduced iron because it affects handling, charging and furnace performance. This standard specifies how size distribution is determined by sieving for iron ores and direct reduced iron. It is a recommended national standard within the iron ore testing series, of which this is Part 7.
Mining companies, steel mills, ports, commodity inspection agencies and independent laboratories that report size data for shipments will use it. Traders and buyers who write size analysis into contracts also benefit from a defined method that both parties can refer to.
The standard was issued on 25 May 2026 and comes into force on 1 December 2026. It replaces GB/T 10322.7-2016, so laboratories and quality systems that cite the previous edition should plan an update to the new reference.
Remaining clauses in the full document
- 2 Normative references
- 3 Terms and definitions
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 29 pages — is available in the English PDF.
Referenced standards
Cited by
- GB/T 18711-2025Test method of magnetite for use in coal preparation
- GB/T 30898-2025Scrap steel from slag for steelmaking
- GB/T 42524-2023Iron ore fines in bulk—Determination of transportable moisture limits—Compaction curve test procedure
- GB/T 29502-2021Purple ores
- GB/T 34568-2017Iron ores for blast furnace and direct reduction feedstocks -- Determination of bulk density
- GB/T 31923.1-2015Iron ores for blast furnace feedstocks -- Determination of low-temperature reduction-disintegration indices by static method -- Part 1: Reduction with CO, CO2, H2 and N2
Editions of GB/T 10322.7
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 10322.7-2026 | Iron ores and direct reduced iron - Determination of size distribution by sieving | current edition | Current |
| GB/T 10322.7-2016 | Iron ores and direct reduced iron-Determination of size distribution by sieving | previous edition | In force until 1 December 2026 |
This page sells the current edition, GB/T 10322.7-2026. Earlier editions are listed for reference only.
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Related Standards
GB/T 10322.1-2023 — Iron ores - Sampling and sample preparation procedures
GB/T 10322.2-2000 — Iron ores. Experimental methods for evaluation of quality variation
GB/T 10322.3-2024 — Iron ores - Experimental methods for checking the precision of sampling
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