CA976306A - Recovery of paper mill waste sludges - Google Patents

Recovery of paper mill waste sludges

Info

Publication number
CA976306A
CA976306A CA156,882A CA156882A CA976306A CA 976306 A CA976306 A CA 976306A CA 156882 A CA156882 A CA 156882A CA 976306 A CA976306 A CA 976306A
Authority
CA
Canada
Prior art keywords
recovery
paper mill
mill waste
waste sludges
sludges
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
Application number
CA156,882A
Other versions
CA156882S (en
Inventor
Clarence A. Hoffman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STWB Inc
Original Assignee
Sterling Drug Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sterling Drug Inc filed Critical Sterling Drug Inc
Application granted granted Critical
Publication of CA976306A publication Critical patent/CA976306A/en
Expired legal-status Critical Current

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)
CA156,882A 1971-11-23 1972-11-17 Recovery of paper mill waste sludges Expired CA976306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20139771A 1971-11-23 1971-11-23

Publications (1)

Publication Number Publication Date
CA976306A true CA976306A (en) 1975-10-21

Family

ID=22745657

Family Applications (1)

Application Number Title Priority Date Filing Date
CA156,882A Expired CA976306A (en) 1971-11-23 1972-11-17 Recovery 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)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9509633D0 (en) * 1995-05-12 1995-07-05 Ecc Int Ltd Treatment of waste paper
US20020079075A1 (en) 1998-09-04 2002-06-27 Imerys Minerals Limited Treatment of solid containing material derived from effluent
SE518051C2 (en) * 2000-12-14 2002-08-20 Stora Kopparbergs Bergslags Ab Ways to recycle inorganic material from decolorization sludge

Also Published As

Publication number Publication date
JPS5627638B2 (en) 1981-06-25
DE2256581B2 (en) 1980-04-30
GB1366020A (en) 1974-09-04
DE2256581C3 (en) 1981-01-22
DE2256581A1 (en) 1973-05-30
JPS4861709A (en) 1973-08-29

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