EP 0093883 A2 19831116 - Carbonaceous materials in water slurries.
Title (en)
Carbonaceous materials in water slurries.
Title (de)
Wässrige Schlämme von Kohlenstoffenthaltenden Materialien.
Title (fr)
Boues aqueuses de matériaux carbonés.
Publication
Application
Priority
US 37741282 A 19820512
Abstract (en)
Aq. slurries of coal (or other carbonaceous material) contain an ammonium salt (I) of a naphthalenesulphonic acid/formaldehyde condensate in an amt. sufficient to reduce viscosity and improve pumpability. The coal content may be 50-80%. The amt. of (I) added may be up to 10 (pref. 0.01-5) wt.%. In contrast to Na or other metal salts, (I) is ashless, has improved performance as a slurry stabiliser and gives aq. solns. with better cold storage stability and lower cost.
IPC 1-7
IPC 8 full level
C09K 23/52 (2022.01); C10L 1/32 (2006.01)
CPC (source: EP)
C10L 1/326 (2013.01)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0093883 A2 19831116; EP 0093883 A3 19850403; AU 1356183 A 19831117; AU 554665 B2 19860828; CA 1179132 A 19841211; JP S58199032 A 19831119
DOCDB simple family (application)
EP 83103530 A 19830412; AU 1356183 A 19830415; CA 406586 A 19820705; JP 6825883 A 19830418