US 12,486,587 B2
Blend composition comprising petroleum coke and pyrolytic carbon for electrodes
Frederik Scheiff, Ludwigshafen (DE); Marc Leduc, Ludwigshafen (DE); Andreas Bode, Ludwigshafen (DE); Sabine Eichhorn, Ludwigshafen (DE); William Daloz, Beachwood, OH (US); and Julien Wyss, Granges (CH)
Assigned to BASF SE, Ludwigshafen am Rhein (DE)
Appl. No. 17/250,390
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Jul. 15, 2019, PCT No. PCT/EP2019/069029
§ 371(c)(1), (2) Date Jan. 15, 2021,
PCT Pub. No. WO2020/016186, PCT Pub. Date Jan. 23, 2020.
Claims priority of application No. 18184459 (EP), filed on Jul. 19, 2018.
Prior Publication US 2021/0277526 A1, Sep. 9, 2021
Int. Cl. C25B 11/043 (2021.01); C25B 1/00 (2021.01); C25B 11/02 (2021.01)
CPC C25B 11/043 (2021.01) [C25B 1/00 (2013.01); C25B 11/02 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An electrode blend composition, comprising:
a mixture of
(i) petroleum coke in a content of 20 to 99 weight-%; and
(ii) pyrolytic carbon in a content of 1 to 80 weight-%, in view of the total weight of the blend composition,
wherein the blend composition contains at least two particle size fractions:
(i) granular above 0.5 mm and (ii) fines below 0.5 mm,
wherein pyrolytic carbon is at least present in the granular size fraction,
wherein said pyrolytic carbon is produced by decomposition of gaseous hydrocarbon compounds at a temperature of 1000 to 2500K and by deposition of said pyrolytic carbon on carbon granules,
wherein said pyrolytic carbon has a crystal size in the range of 20 to 60 Å,
wherein said pyrolytic carbon is present in the granular size fraction having a particle size of 4-2 mm and/or 8-4 mm, and
wherein at least 50 weight-% of the total pyrolytic carbon of the blend composition is in the granular fraction.