ISO 10236-1995 PDF

Full title and description

ISO 10236:1995 — Carbonaceous materials for the production of aluminium — Green coke and calcined coke for electrodes — Determination of bulk density (tapped). This International Standard specifies a laboratory method to determine the tapped (vibrated/tapped) bulk density of granular carbonaceous materials (green and calcined coke) used for manufacture of carbon electrodes in aluminium production.

Abstract

ISO 10236:1995 gives a reproducible procedure for measuring tapped bulk density by placing a known mass of test material into a graduated cylinder, applying a specified tapping/vibration regime and recording the final tapped volume so that tapped bulk density (mass/volume) can be calculated. It covers sample preparation, apparatus, test portion, tapping parameters, number of determinations and reporting.

General information

• Status: Published — International Standard (confirmed following systematic review; maintained as current).
• Publication date: November 1995 (bibliographic records show publication date 16 November 1995).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 71.100.10 — Materials for aluminium production.
• Edition / version: Edition 1 (1995).
• Number of pages: 4 pages (concise method standard).

Scope

This standard applies to granular carbon and graphite materials used to make electrodes for aluminium production (green coke and calcined coke). It defines the test specimen preparation, the measuring cylinder and plunger characteristics, the tapping machine parameters (rate, drop height and number of taps) and the calculation/reporting of tapped bulk density. The method is intended for laboratory quality control, specification and comparative testing of coke fractions.

Key topics and requirements

• Definition of tapped bulk density and the basic calculation (mass divided by tapped volume).
• Sample preparation: drying conditions, sieving/fractioning and representative test portion mass.
• Apparatus: graduated measuring cylinder, guided plunger (specified mass), and a tapping device with defined tap frequency, drop height and total number of taps.
• Procedure: controlled filling, tapping to constant volume, number of determinations (typically two) and reporting of arithmetic mean with specified precision.
• Reporting and precision limits: how to record method parameters (tap count, temperature, fraction tested) and expected repeatability/reproducibility guidance.

Typical use and users

Used by independent testing laboratories, coke and petroleum-coke producers, aluminium smelter quality-control teams, materials engineers and researchers. Typical applications include incoming raw-material acceptance, process control for electrode manufacture, product specification and R&D where tapped bulk density affects electrode packing, porosity and performance.

Related standards

Standards commonly referenced alongside ISO 10236 include ISO 6375 (sampling of coke for electrodes), ISO 3310-1 (test sieves — technical requirements), national/adopted equivalents such as BS 6043-2.13:1996 and GOST R ISO 10236:2016 (adopted/identical national versions). Other complementary test methods for coke/anode raw materials (and vibrated/tapped density tests) from ASTM and national bodies are also used in practice.

Keywords

tapped bulk density; tapped density; vibrated density; bulk density; green coke; calcined coke; electrodes; aluminium production; sample preparation; test method; ISO 10236.

FAQ

Q: What is this standard?

A: ISO 10236:1995 is an International Standard that defines a laboratory method to determine the tapped bulk density of green and calcined coke used for electrodes in aluminium production.

Q: What does it cover?

A: It covers specimen preparation, required apparatus (measuring cylinder, plunger, tapping device), the tapping regime, measurement procedure, calculation of tapped bulk density and reporting conventions including number of determinations and precision guidance.

Q: Who typically uses it?

A: Coke producers, aluminium smelters, independent test laboratories, materials engineers and researchers involved with electrode manufacture or raw-material quality control.

Q: Is it current or superseded?

A: The 1995 edition remains the published International Standard and has been subject to systematic review; ISO records indicate it has been confirmed (reviewed) and remains current. Users should check the ISO catalogue or national standards body for the latest confirmation status before relying on the method.

Q: Is it part of a series?

A: It is one of a set of standards covering carbonaceous materials for aluminium production and was prepared under ISO/TC 226. Related parts and complementary standards address sampling, sieve tests and other physical/chemical properties of coke and electrode materials.

Q: What are the key keywords?

A: Tapped bulk density, tapped density, green coke, calcined coke, electrodes, aluminium production, sample preparation, tapping procedure, bulk density measurement.