DE252413C - - Google Patents

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Publication number
DE252413C
DE252413C DENDAT252413D DE252413DA DE252413C DE 252413 C DE252413 C DE 252413C DE NDAT252413 D DENDAT252413 D DE NDAT252413D DE 252413D A DE252413D A DE 252413DA DE 252413 C DE252413 C DE 252413C
Authority
DE
Germany
Prior art keywords
sulfuric acid
quicklime
dung
gypsum
cardboard
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.)
Active
Application number
DENDAT252413D
Other languages
German (de)
Publication of DE252413C publication Critical patent/DE252413C/de
Active legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/025—Calcium sulfates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Catalysts (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Description

ßERLlN. GEbRUCKT IN DER REICHSDRUCKEREI.ßERLlN. PRINTED IN THE REICHSPRINTEREI.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Reinigung von gebranntem schwefelsauren Kalk zwecks Verwen-■ dung als Füllmittel für Papier, Pappe o. dgl., dadurch gekennzeichnet, daß man das im Gips enthaltene Schwefelcalcium durch einen Zusatz von zwei bis drei Pro-. zent Schwefelsäure im Verein mit zwei bis drei Prozent schwefelsaurer Tonerde zersetzt. Process for the purification of quicklime sulfuric acid for the purpose of ■ Dung as a filler for paper, cardboard o. The like., characterized in that the calcium sulfur contained in the gypsum by adding two to three pro. cent sulfuric acid combined with two to three percent sulfuric alumina decomposes.
DENDAT252413D Active DE252413C (en)

Publications (1)

Publication Number Publication Date
DE252413C true DE252413C (en)

Family

ID=510769

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT252413D Active DE252413C (en)

Country Status (1)

Country Link
DE (1) DE252413C (en)

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