Coke calcination levels and aluminum anode quality

Book · Tue Oct 01 04:00:00 EDT 1996

OSTI ID:372000

Dreyer, C; Samanos, B ^[1]; Vogt, F ^[2]

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1. Aluminum Pechiney, Saint-Jean-de-Maurienne (France)
2. Calciner Industries, Inc., Chalmette, LA (United States)

The calcination temperature of petroleum coke for aluminum anode applications has been generally increased during the past 10 years. This change by coke suppliers has often been done at the request of anode manufacturers (smelters) who seek special quality requirements for the calcined coke. Such an increase in calcining temperatures not only affects coke properties, but also has an effect on calciner operations and may have some unexpected effects on anode quality. One high and one low sulfur coke were calcined industrially at two different levels. The four individual calcined cokes were characterized. Then laboratory scale anodes were produced with each individual calcined coke. These all-coke anodes were first evaluated for optimum pitch content. Then the anodes were baked over a range of temperatures (920 to 1,260 C) in order to evaluate the influence of this heat treatment on anode properties. The results show the influence of calcining temperature on coke properties and anode properties, including the most important influence of the anode baking level.

• OSTI ID: 372000
• Report Number(s): CONF-960202--; ISBN 0-87339-312-0
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
36 MATERIALS SCIENCE
ALUMINIUM
CALCINATION
COKE
DENSITY
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
FLEXURAL STRENGTH
MECHANICAL PROPERTIES
PERMEABILITY
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
POROSITY
REACTIVITY
SMELTING
SULFUR
SURFACE AREA
TEMPERATURE DEPENDENCE
THERMAL EXPANSION
YOUNG MODULUS