EP 0446779 A3 19911016 - PROCESS AND INSTALLATION FOR TREATING OIL-CONTAINING MILL SCALE AND SIMILAR MATERIALS
Title (en)
PROCESS AND INSTALLATION FOR TREATING OIL-CONTAINING MILL SCALE AND SIMILAR MATERIALS
Publication
Application
Priority
DE 4008027 A 19900310
Abstract (en)
[origin: EP0446779A2] To remove oil from oil-containing wet mill scale, mill-scale sludge and similar substances, these substances are treated in a continuous furnace (12) combined with an iron-ore sintering plant. Hot cooler exhaust air from the sintering cooler (5) flows in countercurrent to the mill scale through the continuous furnace (12). In this process, the scale is dried and some of the oil is burnt. The cooler exhaust air is then fed with the volatile oils into the ignition furnace (3) of the sintering machine (1) as combustion air and the residual oils are burnt therein. This prevents unburnt oils depositing in the electrostatic filter (8). Dry mill scale freed of oil can be fed to the mixed material (17). <IMAGE>
IPC 1-7
IPC 8 full level
C22B 1/00 (2006.01); B09B 3/00 (2006.01); C22B 1/16 (2006.01); C22B 1/20 (2006.01); C22B 1/26 (2006.01); C23G 5/00 (2006.01); F27B 21/06 (2006.01); F27B 21/08 (2006.01)
CPC (source: EP)
B09B 3/00 (2013.01); C22B 1/16 (2013.01); C22B 1/20 (2013.01); F27B 21/06 (2013.01); B09B 2101/02 (2022.01)
Citation (search report)
- [X] US 4091545 A 19780530 - IZAWA TETSUO, et al
- [X] US 3857694 A 19741231 - CAPPEL F, et al
- [A] US 3346417 A 19671010 - FRIEDRICH EHRLICH
- [A] US 3869112 A 19750304 - HABAYEB KHALED M
- [A] GB 2025589 A 19800123 - COLLEGE RESEARCH CORP
- [A] GB 2078917 A 19820113 - TOSHIN STEEL CO, et al
Designated contracting state (EPC)
BE DE FR GB IT LU NL
DOCDB simple family (publication)
DE 4008027 C1 19910523; DE 59102782 D1 19941013; EP 0446779 A2 19910918; EP 0446779 A3 19911016; EP 0446779 B1 19940907; JP H0777390 A 19950320
DOCDB simple family (application)
DE 4008027 A 19900310; DE 59102782 T 19910307; EP 91103449 A 19910307; JP 4188291 A 19910307