ZA934158B - Process for raising the bulk density of sodium perborate monohydrate - Google Patents

Process for raising the bulk density of sodium perborate monohydrate

Info

Publication number
ZA934158B
ZA934158B ZA934158A ZA934158A ZA934158B ZA 934158 B ZA934158 B ZA 934158B ZA 934158 A ZA934158 A ZA 934158A ZA 934158 A ZA934158 A ZA 934158A ZA 934158 B ZA934158 B ZA 934158B
Authority
ZA
South Africa
Prior art keywords
sodium perborate
perborate monohydrate
bulk density
raising
compaction
Prior art date
Application number
ZA934158A
Inventor
Birgit Bertsch-Frank
Guenter Stein
Wolfgang Zikofsky
Joerg Herzig
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of ZA934158B publication Critical patent/ZA934158B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/12—Peroxyhydrates; Peroxyacids or salts thereof containing boron
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
    • C01B15/055—Peroxyhydrates; Peroxyacids or salts thereof
    • C01B15/12—Peroxyhydrates; Peroxyacids or salts thereof containing boron
    • C01B15/126—Dehydration of solid hydrated peroxyborates to less hydrated or anhydrous products

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Glanulating (AREA)
  • Detergent Compositions (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The invention relates to a method for increasing the bulk density of particulate sodium perborate monohydrate which has been obtained by dehydration of sodium perborate tetrahydrate. The known compaction of said sodium perborate monohydrate in a roller press having patterned rollers with subsequent size reduction of the flakes, presents considerable problems on an industrial scale. The problems are overcome according to the invention, by arranging for a precompaction stage prior to compaction and maintaining the temperature of the roller surface and of those parts of the precompactor which come into contact with the product, below 20 DEG C.
ZA934158A 1992-06-12 1993-06-11 Process for raising the bulk density of sodium perborate monohydrate ZA934158B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4219229A DE4219229A1 (en) 1992-06-12 1992-06-12 Process for increasing the bulk density of sodium perborate monohydrate

Publications (1)

Publication Number Publication Date
ZA934158B true ZA934158B (en) 1994-01-13

Family

ID=6460852

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA934158A ZA934158B (en) 1992-06-12 1993-06-11 Process for raising the bulk density of sodium perborate monohydrate

Country Status (6)

Country Link
EP (1) EP0573797B1 (en)
JP (1) JPH0656406A (en)
AT (1) ATE149969T1 (en)
DE (2) DE4219229A1 (en)
ES (1) ES2098584T3 (en)
ZA (1) ZA934158B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19516609C2 (en) * 1995-05-10 1997-08-14 Degussa Process for the production of abrasion-resistant sodium perborate monohydrate with high bulk density and high dissolving speed
DE10144109A1 (en) * 2001-09-03 2003-04-24 Michael K Bahr Compressing and granulating finely dispersed powders or powder mixtures comprises adding binder as finely dispersed powder in small amounts to powder
EP1813574A1 (en) 2006-01-25 2007-08-01 Degussa GmbH Sheet compacted pyrogenic silicon dioxide

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3941851C1 (en) * 1989-12-19 1991-06-20 Degussa Ag, 6000 Frankfurt, De
DE4018037A1 (en) * 1990-02-10 1991-08-14 Peroxid Chemie Gmbh PROCESS FOR PREPARING PEROXOBORATE AGGLOMERATES
DE4122513A1 (en) * 1990-08-16 1992-02-20 Peroxid Chemie Gmbh METHOD FOR PRODUCING AGGLOMERED SODIUM PERBORATE MONOHYDRATE WITH IMPROVED PROPERTIES

Also Published As

Publication number Publication date
ATE149969T1 (en) 1997-03-15
DE59305692D1 (en) 1997-04-17
EP0573797B1 (en) 1997-03-12
EP0573797A3 (en) 1994-08-03
ES2098584T3 (en) 1997-05-01
DE4219229A1 (en) 1993-12-16
EP0573797A2 (en) 1993-12-15
JPH0656406A (en) 1994-03-01

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