Method for producing a granular carbon-carbon composite from a lignin-carbon composite
AssigneeStora Enso OYJ
InventorsVilhelm Olsson, Stephan Walter, Mario Wachtler, Mats Lindström
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Abstract
The present invention is directed to a method for producing a thermally stabilized agglomerated lignin-carbon composite material. The method involves the steps of providing an agglomerated lignin-carbon composite material comprising lignin and at least one carbon additive; and heating the agglomerated lignin-carbon composite material to obtain the thermally stabilized agglomerated lignin-carbon composite material. The invention is also directed to a granular carbon-carbon composite material obtained by heat treatment of the thermally stabilized agglomerated lignin-carbon composite material.
Claims24
A method for producing a thermally stabilized agglomerated lignin-carbon composite material, said method comprising the steps of:
- a) providing an agglomerated lignin-carbon composite material having a particle size distribution such that at least 80 wt % of agglomerates have a diameter within a range of from 0.2 mm to 5.0 mm, and wherein said agglomerated lignin-carbon composite material comprises lignin and at least one carbon additive;
- b) heating the agglomerated lignin-carbon composite material to a temperature in a range of from 140 to 250° C. for a period of at least 30 minutes so as to obtain a thermally stabilized agglomerated lignin-carbon composite material.
A thermally stabilized agglomerated lignin-carbon composite material with a particle size distribution such that at least 80 wt % of agglomerates have a diameter within a range of from 0.2 mm to 5.0 mm, and
- wherein the thermally stabilized agglomerated lignin-carbon composite material comprises lignin and at least one carbon additive.
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Dependencies are inferred from the claim text.