BR0215714A - Process for producing low cod pulp and cement product - Google Patents

Process for producing low cod pulp and cement product

Info

Publication number
BR0215714A
BR0215714A BR0215714-4A BR0215714A BR0215714A BR 0215714 A BR0215714 A BR 0215714A BR 0215714 A BR0215714 A BR 0215714A BR 0215714 A BR0215714 A BR 0215714A
Authority
BR
Brazil
Prior art keywords
pulp
low cod
cement product
producing low
product
Prior art date
Application number
BR0215714-4A
Other languages
Portuguese (pt)
Inventor
Michael D Vrbanac
Brian Wester
Brian E Dennis
Peter K Lau
Julie A Reimer
David W Bickell
Original Assignee
Weyerhaeuser Co
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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Priority claimed from PCT/US2002/015522 external-priority patent/WO2003097930A1/en
Publication of BR0215714A publication Critical patent/BR0215714A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B16/02—Cellulosic materials
    • 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
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents

Abstract

"PROCESSO PARA PRODUçãO DE POLPA COM BAIXA COD, E, PRODUTO DE CIMENTO". Produto de polpa que possui uma COD baixa é composto de uma polpa não-alvejada que é embebida e lavada em água alcalina durante um período de tempo suficiente de tal modo que a COD após o embebimento e lavagem é menor ou igual a 3,0 kg/1000 kg de polpa seca. A polpa é produzida embebendo e lavando repetidamente uma polpa não-alvejada em água alcalina que nunca é deixada cair abaixo de pH 7,0. A polpa é embebida e lavada por um total de pelo menos 400 minutos em uma temperatura elevada para produzir o produto de polpa que possui uma baixa COD."PROCESS FOR LOW COD PULP PRODUCTION, AND CEMENT PRODUCT". Low COD pulp product is composed of an unbleached pulp that is soaked and washed in alkaline water for a sufficient period of time such that the COD after soaking and washing is less than or equal to 3.0 kg. / 1000 kg of dried pulp. The pulp is produced by repeatedly soaking and washing an unbleached pulp in alkaline water that is never dropped below pH 7.0. The pulp is soaked and washed for a total of at least 400 minutes at an elevated temperature to produce the low COD pulp product.

BR0215714-4A 2002-05-15 2002-05-15 Process for producing low cod pulp and cement product BR0215714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2002/015522 WO2003097930A1 (en) 2002-05-15 2002-05-15 Process for producing very low cod unbleached pulp

Publications (1)

Publication Number Publication Date
BR0215714A true BR0215714A (en) 2005-02-22

Family

ID=33476215

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0215714-4A BR0215714A (en) 2002-05-15 2002-05-15 Process for producing low cod pulp and cement product

Country Status (5)

Country Link
AU (1) AU2002309875B2 (en)
BR (1) BR0215714A (en)
CA (1) CA2482556C (en)
NO (1) NO20045384L (en)
SE (1) SE0402582L (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148106A (en) * 1964-01-29 1964-09-08 Rayonier Inc Pulp refining

Also Published As

Publication number Publication date
CA2482556A1 (en) 2003-11-27
SE0402582D0 (en) 2004-10-26
AU2002309875B2 (en) 2006-08-17
CA2482556C (en) 2008-09-23
NO20045384L (en) 2004-12-09
AU2002309875A1 (en) 2003-12-02
SE0402582L (en) 2004-12-08

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Legal Events

Date Code Title Description
B08F Application fees: dismissal - article 86 of industrial property law

Free format text: REFERENTE A 9A ANUIDADE(S).

B08K Lapse as no evidence of payment of the annual fee has been furnished to inpi (acc. art. 87)

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2144 DE 07/02/2012.