CA974353A - Process for reducing the amount of calcium contained in magnesium-base waste sulfite liquor by the use of an ammonium compound and additional calcium - Google Patents

Process for reducing the amount of calcium contained in magnesium-base waste sulfite liquor by the use of an ammonium compound and additional calcium

Info

Publication number
CA974353A
CA974353A CA151,760A CA151760A CA974353A CA 974353 A CA974353 A CA 974353A CA 151760 A CA151760 A CA 151760A CA 974353 A CA974353 A CA 974353A
Authority
CA
Canada
Prior art keywords
calcium
magnesium
reducing
amount
ammonium compound
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
CA151,760A
Other languages
English (en)
Other versions
CA151760S (en
Inventor
William H. Stark
Toivo Lahtvee
Bal K. Sethi
Original Assignee
Spring Chemicals Ltd
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 Spring Chemicals Ltd filed Critical Spring Chemicals Ltd
Application granted granted Critical
Publication of CA974353A publication Critical patent/CA974353A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/02—Regeneration of pulp liquors or effluent waste waters of acid, neutral or alkaline sulfite lye
CA151,760A 1971-09-22 1972-09-14 Process for reducing the amount of calcium contained in magnesium-base waste sulfite liquor by the use of an ammonium compound and additional calcium Expired CA974353A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18283271A 1971-09-22 1971-09-22

Publications (1)

Publication Number Publication Date
CA974353A true CA974353A (en) 1975-09-16

Family

ID=22670237

Family Applications (1)

Application Number Title Priority Date Filing Date
CA151,760A Expired CA974353A (en) 1971-09-22 1972-09-14 Process for reducing the amount of calcium contained in magnesium-base waste sulfite liquor by the use of an ammonium compound and additional calcium

Country Status (6)

Country Link
US (1) US3794718A (da)
JP (1) JPS4861390A (da)
AT (1) AT319737B (da)
CA (1) CA974353A (da)
CS (1) CS174840B2 (da)
FR (1) FR2153361B1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873415A (en) * 1973-05-03 1975-03-25 Spring Chemicals Ltd Process for reducing the amount of calcium contained in sodium-base waste sulfite liquor by the use of a sodium and/or an ammonium compound and additional calcium
US4002457A (en) * 1974-08-19 1977-01-11 International Telephone And Telegraph Corporation Soil conditioners and fertilizers from spent sulfite liquor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2433458A (en) * 1943-03-04 1947-12-30 Infilco Inc Treatment of pickle liquor
US2644748A (en) * 1946-11-04 1953-07-07 Chempatents Inc Sulfite waste treatment process
US3085858A (en) * 1959-11-09 1963-04-16 Aluminium Lab Ltd Recovery of magnesium compounds from ores

Also Published As

Publication number Publication date
US3794718A (en) 1974-02-26
CS174840B2 (da) 1977-04-29
AT319737B (de) 1975-01-10
FR2153361A1 (da) 1973-05-04
FR2153361B1 (da) 1974-01-04
JPS4861390A (da) 1973-08-28

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