EP 0174035 B1 19881026 - PROCESS FOR PREPARING NEEDLE COKE WITH LITTLE IRREVERSIBLE VOLUME EXPANSION FROM COALTAR PITCH
Title (en)
PROCESS FOR PREPARING NEEDLE COKE WITH LITTLE IRREVERSIBLE VOLUME EXPANSION FROM COALTAR PITCH
Publication
Application
Priority
DE 3432886 A 19840907
Abstract (en)
[origin: EP0174035A2] 1. A process for manufacturing needle coke from coaltar pitch with low irreversible volume increase during the graphitisation of the moulded bodies manufactured therefrom by low-temperature coking of pitches having a content of quinoline-insoluble matter of 0.1 %-weight maximum, characterized in that the ash-forming components are removed from the raw material to at least 0.01 %-weight and the crystalline structure of the coke is disturbed by a suitable choice of raw material and/or by the coking parameters in such a manner that the true density of the coke calcined at 1300 degrees C is reduced to a level of between 2.08 and 2.14 g/cm**3.
IPC 1-7
IPC 8 full level
C10B 55/00 (2006.01)
CPC (source: EP)
C10B 55/00 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0174035 A2 19860312; EP 0174035 A3 19870520; EP 0174035 B1 19881026; DE 3432886 A1 19860320; DE 3565854 D1 19881201
DOCDB simple family (application)
EP 85200849 A 19850528; DE 3432886 A 19840907; DE 3565854 T 19850528