FI93751B - Method and apparatus for treating calcium carbonate slurry as a residue from a papermaking process - Google Patents

Method and apparatus for treating calcium carbonate slurry as a residue from a papermaking process

Info

Publication number
FI93751B
FI93751B FI895468A FI895468A FI93751B FI 93751 B FI93751 B FI 93751B FI 895468 A FI895468 A FI 895468A FI 895468 A FI895468 A FI 895468A FI 93751 B FI93751 B FI 93751B
Authority
FI
Finland
Prior art keywords
mesa
residue
calcium carbonate
carbonate slurry
papermaking process
Prior art date
Application number
FI895468A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI895468A0 (en
Inventor
Joergen Theil
Original Assignee
Smidth & Co As F L
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=20373977&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=FI93751(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Smidth & Co As F L filed Critical Smidth & Co As F L
Publication of FI895468A0 publication Critical patent/FI895468A0/en
Application granted granted Critical
Publication of FI93751B publication Critical patent/FI93751B/en

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
    • D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
    • D21C11/0078—Treatment of green or white liquors with other means or other compounds than gases, e.g. in order to separate solid compounds such as sodium chloride and carbonate from these liquors; Further treatment of these compounds

Landscapes

  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Paper (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Sludge (AREA)
  • Fertilizers (AREA)

Abstract

In a method and using an apparatus for carrying out the method for the treatment of calcium carbonate slurry ("mesa"), which is a re-utilizable residue from the causticisation of sodium carbonate with burnt lime in the manufacture of paper after the sulphate process, the lime sludge or "mesa cake" is conditioned in a mixer (21) with dry, powderous raw material (CaCO3) to a loose, moist mesa pulp which is fed to the lower end of a riser pipe (17) constructed as a flash duct wherein the mesa pulp is suspended, dried and pulverized by means of hot smoke gas from a kiln (1), whereupon the dry, powderous product is separated from the smoke gas in a separator (18) and fed to the kiln (1) for further treatment in same.
FI895468A 1988-11-17 1989-11-16 Method and apparatus for treating calcium carbonate slurry as a residue from a papermaking process FI93751B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8804160A SE460728B (en) 1988-11-17 1988-11-17 PROCEDURE AND EQUIPMENT IN TREATMENT OF MESA

Publications (2)

Publication Number Publication Date
FI895468A0 FI895468A0 (en) 1989-11-16
FI93751B true FI93751B (en) 1995-02-15

Family

ID=20373977

Family Applications (1)

Application Number Title Priority Date Filing Date
FI895468A FI93751B (en) 1988-11-17 1989-11-16 Method and apparatus for treating calcium carbonate slurry as a residue from a papermaking process

Country Status (10)

Country Link
EP (1) EP0369650B1 (en)
JP (1) JPH0319987A (en)
AT (1) ATE88767T1 (en)
BR (1) BR8905827A (en)
CA (1) CA2003112A1 (en)
DE (1) DE68906243T2 (en)
ES (1) ES2055097T3 (en)
FI (1) FI93751B (en)
PT (1) PT92341A (en)
SE (1) SE460728B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5213496A (en) * 1989-07-03 1993-05-25 A. Ahlstrom Corporation Feeding system for a lime reburning kiln
FI87245C (en) * 1989-07-03 1992-12-10 Ahlstroem Oy INMATNINGSSYSTEM FOER MESAUGN
GB9606638D0 (en) * 1996-03-29 1996-06-05 Ecc Int Ltd Treatment of solid containing material derived from effluent
FI107057B (en) * 1996-07-05 2001-05-31 Andritz Ahlstrom Oy Honey feeding system
US20020079075A1 (en) 1998-09-04 2002-06-27 Imerys Minerals Limited Treatment of solid containing material derived from effluent
US6348128B1 (en) 1998-06-01 2002-02-19 U.S. Borax Inc. Method of increasing the causticizing efficiency of alkaline pulping liquor by borate addition
US6294048B1 (en) * 1998-06-01 2001-09-25 U.S. Borax Inc. Method for regenerating sodium hydroxide by partial autocausticizing sodium carbonate containing smelt by reaction with a borate
JP4338744B2 (en) 2007-03-30 2009-10-07 セイコークロック株式会社 Karakuri Clock
DE102011014348A1 (en) 2011-03-18 2014-06-18 Ecoloop Gmbh Process for the continuous production of precipitated calcium carbonate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3020881C2 (en) * 1980-06-02 1984-08-09 Krupp Polysius Ag, 4720 Beckum Process and plant for the production of sintered magnesite from magnesium hydroxide
FI73755C (en) * 1985-11-22 1987-11-09 Ekono Oy FOERFARANDE FOER KAUSTICERING AV EN ALKALIKARBONATHALTIG VATTENLOESNING.

Also Published As

Publication number Publication date
JPH0319987A (en) 1991-01-29
BR8905827A (en) 1990-06-12
EP0369650B1 (en) 1993-04-28
EP0369650A3 (en) 1991-05-29
PT92341A (en) 1990-05-31
ATE88767T1 (en) 1993-05-15
SE8804160D0 (en) 1988-11-17
CA2003112A1 (en) 1990-05-17
FI895468A0 (en) 1989-11-16
DE68906243D1 (en) 1993-06-03
DE68906243T2 (en) 1993-08-12
SE8804160A (en) 1988-11-17
SE460728B (en) 1989-11-13
ES2055097T3 (en) 1994-08-16
EP0369650A2 (en) 1990-05-23

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Legal Events

Date Code Title Description
BB Publication of examined application
FD Application lapsed
MM Patent lapsed

Owner name: F.L. SMIDTH & CO. A/S