ISO 11536-2015 PDF

Full title and description

ISO 11536:2015 — Iron ores — Determination of loss on ignition — Gravimetric method. This International Standard specifies a gravimetric laboratory method to determine the loss in mass (loss on ignition, LOI) of fully‑oxidized iron ores, iron ore concentrates and agglomerates by ignition at 1 000 °C for quality control and material characterisation purposes.

Abstract

ISO 11536:2015 specifies a gravimetric method for the determination of the loss in mass of fully‑oxidized iron ores when ignited at 1 000 °C. The method is applicable to a concentration range of 1.0 % (m/m) to 10.0 % (m/m) loss on ignition in natural iron ores, iron ore concentrates and agglomerates. It is not applicable to processed ores containing metallic iron (direct reduced iron), to ores with sulfur content higher than 0.2 % (m/m) or to ores with more than 1.0 % (m/m) partially‑oxidized iron.

General information

• Status: Published (International Standard; confirmed current after systematic review in 2022).
• Publication date: 2015‑08 (first edition, 2015).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 73.060.10 (Iron ores).
• Edition / version: Edition 1 (2015).
• Number of pages: 7 (official ISO publication length).

Key bibliographic and lifecycle details are recorded by ISO and reflect that the 2015 edition remains the active version following review.

Scope

Provides a gravimetric test procedure to determine loss on ignition for fully‑oxidized iron ores, ore concentrates and agglomerates in the LOI range 1.0 % to 10.0 % (m/m). The standard defines required sample preparation, ignition conditions (1000 °C), weighing procedure and calculation of LOI, and lists specific material types and compositional limits for which the method is not applicable (for example, direct reduced iron, high sulphur ores, or ores with significant partially‑oxidized iron).

Key topics and requirements

• Scope and applicability: natural iron ores, iron ore concentrates and agglomerates; LOI range 1.0–10.0 % (m/m).
• Ignition conditions: combustion/ignition of the test portion at 1 000 °C (specified furnace conditions and crucible handling).
• Gravimetric measurement: pre‑ and post‑ignition mass determination to calculate percentage loss on ignition.
• Exclusions and limits: not applicable to ores containing metallic iron (direct reduced iron), sulfur > 0.2 % (m/m) or partially‑oxidized iron > 1.0 % (m/m).
• Reporting: expression of results as mass fraction (percentage) LOI, with required reporting of sample details and any deviations from the method.

Typical use and users

Routine quality control and material characterisation in mining companies, mineral processing plants, independent analytical/assay laboratories, and steel‑making feedstock procurement teams. The method is used where a simple, reproducible gravimetric LOI determination is required for specification compliance, process control or material reporting.

Related standards

Relevant companion documents include ISO/TR 18230:2015 (guidance on LOI determination for non‑oxidised ores) and other ISO standards covering certified reference material preparation and related chemical analysis methods for iron ores (for example ISO 11459 series). Users frequently consult these documents together when defining laboratory procedures and reference material strategies.

Keywords

iron ores; loss on ignition; LOI; gravimetric method; 1000 °C; ore concentrates; agglomerates; quality control; ISO 11536.

FAQ

Q: What is this standard?

A: ISO 11536:2015 is an International Standard that specifies a gravimetric laboratory method for determining loss on ignition (LOI) of fully‑oxidized iron ores, concentrates and agglomerates by ignition at 1 000 °C.

Q: What does it cover?

A: It covers sample treatment, ignition at 1 000 °C, pre‑ and post‑ignition weighing and calculation of LOI for materials with LOI in the range 1.0 % to 10.0 % (m/m), and lists material/compositional limits where the method is not applicable (e.g., direct reduced iron, sulfur > 0.2 %, partially‑oxidized iron > 1.0 %).

Q: Who typically uses it?

A: Mining companies, mineral processing and pelletising plants, independent analytical laboratories and steel industry procurement/quality teams use the standard for routine LOI determination and specification verification.

Q: Is it current or superseded?

A: The 2015 edition was reviewed and confirmed by ISO in 2022 and remains the current version as published in 2015. Users should check ISO or their national standards body for any subsequent revisions or confirmations beyond 2022.

Q: Is it part of a series?

A: It is associated with other ISO documents on LOI and iron‑ore analysis (for example ISO/TR 18230:2015 for non‑oxidised ores and standards on certified reference materials) and falls under the work of ISO/TC 102/SC 2 (iron ores).

Q: What are the key keywords?

A: Iron ores, loss on ignition (LOI), gravimetric method, 1000 °C, ore concentrates, agglomerates, quality control, ISO 11536.