DE284601C - - Google Patents

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Publication number
DE284601C
DE284601C DENDAT284601D DE284601DA DE284601C DE 284601 C DE284601 C DE 284601C DE NDAT284601 D DENDAT284601 D DE NDAT284601D DE 284601D A DE284601D A DE 284601DA DE 284601 C DE284601 C DE 284601C
Authority
DE
Germany
Prior art keywords
bottles
bayer
shaker
per liter
ozone
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
DENDAT284601D
Other languages
German (de)
Publication of DE284601C publication Critical patent/DE284601C/de
Active legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
    • C01F7/145—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process characterised by the use of a crystal growth modifying agent other than aluminium hydroxide seed
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • C01F7/47—Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
    • C01F7/473—Removal of organic compounds, e.g. sodium oxalate
    • C01F7/476—Removal of organic compounds, e.g. sodium oxalate by oxidation

Description

Die ursprüngliche Lauge ergab nach 30 Stunden insgesamt eine Suspension von 17,4 g Tonerdehydrat ; ausgeschieden demnach 17,4 — 5 =12,4 g. Vorhanden in der Lauge ursprünglich 39,37 g Tonerdehydrat, daher ausgeschieden 31,4 Prozent. .After 30 hours, the original lye resulted in a total suspension of 17.4 g of alumina hydrate ; eliminated accordingly 17.4 - 5 = 12.4 g. Available in lye originally 39.37 g of alumina hydrate, therefore 31.4 percent excreted. .

Die ozonisierte Lauge ergab nach 30 Stunden eine Suspension von 28,8g Hydrat; ausgeschieden 28,8 — 5 = 23,8 g oder 6o,4 Prozent.The ozonated liquor gave a suspension of 28.8 g of hydrate after 30 hours; eliminated 28.8 - 5 = 23.8 g or 6o.4 percent.

BERLIN. GEDRUCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICHSDRUCKEREI.

Claims (1)

Patent-Anspruch:Patent claim: Verfahren zur Gewinnung der Tonerde aus Aluminatlaugen nach dem Bayerschen Verfahren, dadurch gekennzeichnet, daß man in diese Laugen vor oder während der Fällung der Tonerde Ozon einleitet.Process for the recovery of alumina from aluminate liquors according to Bayer's method Process, characterized in that ozone is introduced into these liquors before or during the precipitation of the clay. pro Liter, 105 g Al2 O3 gesamt pro Liter. Von dieser Flüssigkeit, die beinahe tiefrot gefärbt war, wurde ein größeres Quantum mit Ozon bis -zur völligen Entfärbung behandelt, sodann wurden Parallel versuche hinsichtlich des Ausrührens nach Bayer mit der ursprünglichen und mit den ozonisierten Laugen angestellt.per liter, 105 g of Al 2 O 3 in total per liter. A larger quantity of this liquid, which was almost deep red in color, was treated with ozone until it was completely decolorized, then parallel experiments were made with the original and with the ozonated alkaline solutions with regard to Bayer agitation. Hierzu wurden von der Lauge je 250 cm3 in zwei Schüttelflaschen gefüllt, in jede der beiden Flaschen 5 g Tonerdehydrat zugesetzt, auf 300C gebracht und beide Flaschen in einem Schüttelapparat durch 30 Stunden in Bewegung erhalten.For this purpose, 250 cm 3 of the lye were filled into two shaker bottles, 5 g of alumina hydrate were added to each of the two bottles, brought to 30 ° C. and both bottles were kept in motion for 30 hours in a shaker.
DENDAT284601D Active DE284601C (en)

Publications (1)

Publication Number Publication Date
DE284601C true DE284601C (en)

Family

ID=540060

Family Applications (1)

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Country Status (1)

Country Link
DE (1) DE284601C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1440938A1 (en) * 2003-01-14 2004-07-28 Ozonia AG Process to remove organic impurities from Bayer process liquor using ozone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1440938A1 (en) * 2003-01-14 2004-07-28 Ozonia AG Process to remove organic impurities from Bayer process liquor using ozone

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