EP 1047638 A1 20001102 - METHOD FOR PRODUCING TiO 2? ACCORDING TO THE SULFATE METHOD
Title (en)
METHOD FOR PRODUCING TiO 2? ACCORDING TO THE SULFATE METHOD
Title (de)
VERFAHREN ZUR HERSTELLUNG VON TiO 2? NACH DEM SULFATVERFAHREN
Title (fr)
PROCEDE DE PREPARATION DE TiO 2? SELON LE PROCEDE AU SULFATE
Publication
Application
Priority
- DE 19800881 A 19980113
- EP 9808341 W 19981219
Abstract (en)
[origin: DE19800881A1] The moist metatitanic acid filter cake is passed into a drier for pre-drying before entry into the furnace for calcining. The cake is first dewatered to between 55 and 65% moisture. The pre-drying at 100 to 160 deg C brings the residual moisture level to between 5 and 25%. The waste gas from the calcining furnace is used to heat the drier. The pre-dried filter cake has a mean particle size of from 0.1 to 4 mm immediately before entry into the calcining furnace.
IPC 1-7
IPC 8 full level
C01G 23/053 (2006.01); C01G 23/08 (2006.01)
CPC (source: EP)
C01G 23/0532 (2013.01); C01G 23/08 (2013.01); C01P 2006/82 (2013.01)
Citation (search report)
See references of WO 9936362A1
Designated contracting state (EPC)
BE DE ES FI FR GB IT
DOCDB simple family (publication)
DE 19800881 A1 19990715; EP 1047638 A1 20001102; PL 341766 A1 20010507; SI 20322 A 20010228; WO 9936362 A1 19990722
DOCDB simple family (application)
DE 19800881 A 19980113; EP 9808341 W 19981219; EP 98966647 A 19981219; PL 34176698 A 19981219; SI 9820090 A 19981219