ISO 10142-1996 PDF

Full title and description

ISO 10142:1996 — Carbonaceous materials for use in the production of aluminium — Calcined coke — Determination of grain stability using a laboratory vibration mill. This International Standard specifies a laboratory vibration mill procedure used to assess the grain stability (mechanical durability) of calcined coke intended for manufacture of carbon products for aluminium production.

Abstract

The standard describes a laboratory test method that subjects a representative sample of calcined coke to controlled vibration in a laboratory mill and then determines the change in particle-size distribution to quantify grain stability. The result is used to judge whether the calcined coke has adequate mechanical strength for subsequent handling and baking processes in carbon-product manufacture.

General information

• Status: Published (confirmed as current following periodic review).
• Publication date: September 1996 (1996-09).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 71.100.10 — Materials for aluminium production.
• Edition / version: Edition 1 (1996).
• Number of pages: 5 pages.

Scope

ISO 10142:1996 applies to calcined coke intended for use in the manufacture of carbon products for primary aluminium production. It addresses the problem of poor mechanical strength in calcined coke, which can lead to degradation during mixing and handling and ultimately affect the quality of baked carbon blocks. The standard establishes a reproducible laboratory vibration-mill test to determine grain stability and provides requirements for sample preparation, test conduct and result reporting.

Key topics and requirements

• Definition of purpose and applicability: assessment of mechanical grain stability of calcined coke used in aluminium carbon products.
• Reference to normative standards for test sieves and sampling (for example, ISO 3310-1 and ISO 6375 listed as normative references).
• Description of the laboratory vibration mill apparatus and required conditioning of the sample before testing.
• Specified test procedure: vibration of a representative sample under defined conditions followed by sieving to determine particle-size distribution changes and calculation of grain-stability indicators.
• Requirements for test reporting, including initial and final particle-size distributions, test conditions and any deviations from the method.

Typical use and users

Primary users include calcined-coke producers, aluminium-carbon product manufacturers, quality-control and materials-testing laboratories, and research groups involved in raw-material evaluation for aluminium production. The standard is used for incoming raw-material inspection, production quality control, and comparative testing during process development.

Related standards

Normative and related references cited with this standard include ISO 3310-1 (test sieves — technical requirements) and ISO 6375 (sampling of coke for electrodes), together with other ISO/TC 226 documents on materials for aluminium production. Users commonly consult adjacent ISO standards for sampling, sieving and other test-method prerequisites.

Keywords

calcined coke; grain stability; vibration mill; carbonaceous materials; aluminium production; mechanical strength; particle-size distribution; test method; ISO 10142:1996.

FAQ

Q: What is this standard?

A: ISO 10142:1996 is an international test-method standard that specifies a laboratory vibration-mill procedure to determine the grain stability of calcined coke used in the production of carbon products for the aluminium industry.

Q: What does it cover?

A: It covers sample preparation, the vibration-mill test procedure, post-test sieving/particle-size determination and how to report the results so users can evaluate the mechanical durability of calcined coke. Normative references include standards for sieves and sampling.

Q: Who typically uses it?

A: Coke producers, aluminium-carbon manufacturers, quality-control laboratories and materials testing facilities use this standard to verify that calcined coke meets mechanical stability requirements for downstream processing.

Q: Is it current or superseded?

A: ISO 10142:1996 was published in 1996 and, according to ISO's record, the edition was reviewed and confirmed as current (most recently reviewed and confirmed in 2024). It therefore remains the current edition unless ISO indicates a future revision or withdrawal.

Q: Is it part of a series?

A: It belongs to ISO technical work on materials for aluminium production (ISO/TC 226). It is associated with other test and product standards for coke and carbon materials (for example, sampling and sieving standards referenced in the normative clauses).

Q: What are the key keywords?

A: Calcined coke; grain stability; vibration mill; mechanical durability; aluminium production; particle-size distribution.