GB1366020A - Treatment of paper mill waste sludges - Google Patents
Treatment of paper mill waste sludgesInfo
- Publication number
- GB1366020A GB1366020A GB5060572A GB5060572A GB1366020A GB 1366020 A GB1366020 A GB 1366020A GB 5060572 A GB5060572 A GB 5060572A GB 5060572 A GB5060572 A GB 5060572A GB 1366020 A GB1366020 A GB 1366020A
- Authority
- GB
- United Kingdom
- Prior art keywords
- paper mill
- sludge
- treatment
- mill waste
- fillers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/70—Inorganic compounds forming new compounds in situ, e.g. within the pulp or paper, by chemical reaction with other substances added separately
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
1366020 Recovering paper-making fillers from paper mill sludge STERLING DRUG Inc 2 Nov 1972 [23 Nov 1971] 50605/72 Headings C1A C1N and C1C [Also in Division C4] Inorganic fillers are recovered from paper mill waste sludge by heating the sludge in an O2-containing gas at 160-375‹ C. at a pressure which will maintain the water in the liquid phase, and separating the solids. Preferred fillers are TiO2, CaCO3, and clay. The sludge is that obtained on clarification of "white water".
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US20139771A | 1971-11-23 | 1971-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1366020A true GB1366020A (en) | 1974-09-04 |
Family
ID=22745657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5060572A Expired GB1366020A (en) | 1971-11-23 | 1972-11-02 | Treatment of paper mill waste sludges |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5627638B2 (en) |
CA (1) | CA976306A (en) |
DE (1) | DE2256581C3 (en) |
GB (1) | GB1366020A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5683590A (en) * | 1995-05-12 | 1997-11-04 | Ecc International Inc. | Treatment of waste paper |
WO2002048450A1 (en) * | 2000-12-14 | 2002-06-20 | Stora Kopparbergs Bergslags Ab | A process for recovering inorganic material from deinking sludge |
US7300539B2 (en) | 1996-07-31 | 2007-11-27 | Imerys Minerals Limited | Treatment of solid containing material derived from effluent |
-
1972
- 1972-11-02 GB GB5060572A patent/GB1366020A/en not_active Expired
- 1972-11-17 CA CA156,882A patent/CA976306A/en not_active Expired
- 1972-11-17 DE DE19722256581 patent/DE2256581C3/en not_active Expired
- 1972-11-18 JP JP11612072A patent/JPS5627638B2/ja not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5683590A (en) * | 1995-05-12 | 1997-11-04 | Ecc International Inc. | Treatment of waste paper |
AU692379B2 (en) * | 1995-05-12 | 1998-06-04 | Ecc International Limited | Treatment of waste paper |
US7300539B2 (en) | 1996-07-31 | 2007-11-27 | Imerys Minerals Limited | Treatment of solid containing material derived from effluent |
WO2002048450A1 (en) * | 2000-12-14 | 2002-06-20 | Stora Kopparbergs Bergslags Ab | A process for recovering inorganic material from deinking sludge |
Also Published As
Publication number | Publication date |
---|---|
DE2256581A1 (en) | 1973-05-30 |
JPS5627638B2 (en) | 1981-06-25 |
JPS4861709A (en) | 1973-08-29 |
DE2256581B2 (en) | 1980-04-30 |
CA976306A (en) | 1975-10-21 |
DE2256581C3 (en) | 1981-01-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |