FI875275A - FOERFARANDE OCH ANORDNING FOER BEHANDLING AV MESA. - Google Patents
FOERFARANDE OCH ANORDNING FOER BEHANDLING AV MESA. Download PDFInfo
- Publication number
- FI875275A FI875275A FI875275A FI875275A FI875275A FI 875275 A FI875275 A FI 875275A FI 875275 A FI875275 A FI 875275A FI 875275 A FI875275 A FI 875275A FI 875275 A FI875275 A FI 875275A
- Authority
- FI
- Finland
- Prior art keywords
- sludge
- cake
- filter
- treatment
- drying
- Prior art date
Links
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- Paper (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a process for the treatment of sludge and a device intended for application of the process. Sludge appears alongside white liquor in the causticizing process in a sulphate cellulose plant and the aim of the treatment is to separate, wash and dry the sludge for calcination. According to the invention, the sludge treatment is realized by means of a filter which rotates about its axis, such as a drum filter, by using suction to form on the filtering surface 2 of the filter 1, from a mixture 6 of sludge and white liquor, a sludge cake 7, by washing the cake with a detergent solution conducted through the latter and the filtering surface, by drying the cake with air conducted through the latter and the filtering surface and by removing the cake from the filter. For the formation of the sludge cake, the filter is preferably partially submerged in a basin 5 containing sludge and white liquor and, for washing and drying of the cake, is partially surrounded by a casing 8, to which the feed ducts 10 for the detergent solution and the drying air are connected. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI875275A FI87995C (en) | 1986-11-28 | 1987-11-30 | Method and apparatus for treating mesa |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI864869 | 1986-11-28 | ||
FI864869A FI864869A0 (en) | 1986-11-28 | 1986-11-28 | FOERFARANDE OCH ANORDNING FOER BEHANDLING AV MESA. |
FI875275 | 1987-11-30 | ||
FI875275A FI87995C (en) | 1986-11-28 | 1987-11-30 | Method and apparatus for treating mesa |
Publications (4)
Publication Number | Publication Date |
---|---|
FI875275A0 FI875275A0 (en) | 1987-11-30 |
FI875275A true FI875275A (en) | 1988-05-29 |
FI87995B FI87995B (en) | 1992-12-15 |
FI87995C FI87995C (en) | 1993-03-25 |
Family
ID=26158049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI875275A FI87995C (en) | 1986-11-28 | 1987-11-30 | Method and apparatus for treating mesa |
Country Status (1)
Country | Link |
---|---|
FI (1) | FI87995C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9636611B2 (en) | 2012-02-06 | 2017-05-02 | Andritz Oy | Method for removing the precoat layer of a rotary filter |
-
1987
- 1987-11-30 FI FI875275A patent/FI87995C/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9636611B2 (en) | 2012-02-06 | 2017-05-02 | Andritz Oy | Method for removing the precoat layer of a rotary filter |
Also Published As
Publication number | Publication date |
---|---|
FI87995C (en) | 1993-03-25 |
FI87995B (en) | 1992-12-15 |
FI875275A0 (en) | 1987-11-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM | Patent lapsed | ||
MM | Patent lapsed |
Owner name: A. AHLSTROEM OY |