ASTM D6791-11
Standard Test Method for Determination of Grain Stability of Calcined Petroleum Coke

Standard No.

ASTM D6791-11

Release Date

2011

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D6791-11(2017)e1

Latest

ASTM D6791-22

Scope

The grain stability of calcined petroleum coke determines the resistance to breakdown of +4 mm particles used in the manufacture of carbon anodes for use in the reduction process of aluminum.

Calcined petroleum cokes have to be relatively easy to grind for fines production but strong enough to withstand forming pressures and thermal stresses occurring when the anodes are used in the reduction process.

1.1 This test method covers a laboratory vibration mill method for the determination of the grain stability of calcined petroleum coke for the manufacture of carbon products used in the smelting of aluminum. Calcined petroleum coke with poor mechanical strength may become degraded during mixing. Poor grain stability will affect the grain size and may result in poor quality of baked blocks.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D6791-11 Referenced Document

• ASTM D2013 Standard Method of Preparing Coal Samples for Analysis
• ASTM D2234/D2234M Standard Practice for Collection of a Gross Sample of Coal
• ASTM D346 Standard Practice for Collection and Preparation of Coke Samples for Laboratory Analysis
• ASTM D6969 Standard Practice for Preparation of Calcined Petroleum Coke Samples for Analysis
• ASTM D6970 Standard Practice for Collection of Calcined Petroleum Coke Samples for Analysis
• ASTM E11 Standard Specification for Wire Cloth and Sieves for Testing Purposes
• ISO 6375 Carbonaceous materials for the production of aluminium; Cokes for electrodes; Sampling

ASTM D6791-11 history

• 2022 ASTM D6791-22 Standard Test Method for Determination of Grain Stability of Calcined Petroleum Coke
• 2011 ASTM D6791-11(2017)e1 Standard Test Method for Determination of Grain Stability of Calcined Petroleum Coke
• 2011 ASTM D6791-11 Standard Test Method for Determination of Grain Stability of Calcined Petroleum Coke
• 2006 ASTM D6791-06 Standard Test Method for Determination of Grain Stability of Calcined Petroleum Coke
• 2002 ASTM D6791-02 Standard Test Method for Determination of Grain Stability of Calcined Petroleum Coke