ISO 10143-2019 PDF

Full title and description

ISO 10143:2019 — Carbonaceous materials for the production of aluminium — Calcined coke for electrodes — Determination of the electrical resistivity of granules. This International Standard specifies a laboratory method to determine the electrical resistivity of granular carbon (calcined or graphitized) used in the manufacture of carbon electrodes for aluminium production.

Abstract

This document defines a procedure to measure the electrical resistivity of coke granules. The result helps to assess the degree of coke calcination and provides information relevant to the electrical behaviour of electrodes made from the aggregate; generally, more highly calcined coke shows lower electrical resistivity when grain size and other factors are comparable.

General information

• Status: Published; international standard (confirmed at review).
• Publication date: July 2019 (Edition 3, published 2019-07).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 71.100.10 (Materials for aluminium production).
• Edition / version: 3 (2019).
• Number of pages: 5.

Scope

ISO 10143:2019 applies to granular carbon materials (calcined or graphitized) intended for use in electrodes for aluminium production and specifies a standardised laboratory method for determining their electrical resistivity. The procedure is intended to support material characterisation and quality control by linking resistivity to calcination level and predicting aspects of electrode electrical performance.

Key topics and requirements

• Definition of the test purpose: measurement of electrical resistivity of granular (calcined or graphitized) carbon used for electrodes.
• Requirements for sample preparation and representative granule selection (to ensure results reflect material batch characteristics).
• Specification of the measurement principle and necessary apparatus to obtain repeatable resistivity values under defined conditions.
• Procedures for measuring, calculating and reporting electrical resistivity so results can be used for material assessment and quality control.
• Application context: how resistivity relates to calcination level and expected electrode performance (qualitative guidance included in the standard).

Typical use and users

Primary users include aluminium producers, electrode manufacturers, raw-material suppliers, testing and quality-control laboratories, and technical committees or engineers responsible for incoming‑material inspection and process control. The standard is typically used during incoming material acceptance, production quality checks and R&D when comparing batches or assessing the effect of calcination on electrical properties.

Related standards

ISO 10143 is part of a group of ISO documents addressing carbonaceous materials for aluminium production and electrode properties. Relevant related standards include (examples): ISO 12980:2000 (X‑ray fluorescence analysis for green and calcined coke), ISO 10236:1995 (determination of tapped bulk density of green and calcined coke), and older sampling and related methods such as ISO 6375:1980 (sampling of coke for electrodes). These documents complement ISO 10143 by covering chemical analysis, physical properties and sampling procedures.

Keywords

calcined coke, graphitized coke, granular carbon, electrical resistivity, electrodes, aluminium production, material characterisation, quality control, ISO/TC 226.

FAQ

Q: What is this standard?

A: ISO 10143:2019 is an International Standard that specifies a laboratory method to determine the electrical resistivity of calcined or graphitized coke granules used in electrodes for aluminium production.

Q: What does it cover?

A: It covers the purpose of the measurement, the general method to obtain resistivity values for granular carbon materials, and guidance on how the measurements relate to calcination level and electrode performance; the standard is procedural and focuses on repeatable test results rather than providing prescriptive acceptance limits.

Q: Who typically uses it?

A: Aluminium smelters, electrode manufacturers, raw‑material suppliers, and testing/quality laboratories use this standard for material evaluation, incoming inspection, process control and R&D.

Q: Is it current or superseded?

A: The 2019 edition (Edition 3, published July 2019) is the current published edition; ISO records indicate the publication was reviewed and confirmed (status confirmed during the periodic review process), so this edition remains current as published.

Q: Is it part of a series?

A: Yes — ISO 10143 belongs to a body of ISO standards for carbonaceous materials used in aluminium production (standards covering sampling, density, chemical analysis and other test methods), and is associated with the work of ISO/TC 226 (Materials for the production of primary aluminium). See related documents such as ISO 12980 and ISO 10236 for complementary test methods.

Q: What are the key keywords?

A: calcined coke; electrical resistivity; granules; carbonaceous materials; electrodes; aluminium production; quality control; ISO/TC 226.