DE375308C - Process for the digestion of boron atrocalcite - Google Patents

Process for the digestion of boron atrocalcite

Info

Publication number
DE375308C
DE375308C DESCH63699D DESC063699D DE375308C DE 375308 C DE375308 C DE 375308C DE SCH63699 D DESCH63699 D DE SCH63699D DE SC063699 D DESC063699 D DE SC063699D DE 375308 C DE375308 C DE 375308C
Authority
DE
Germany
Prior art keywords
boric acid
digestion
boron
atrocalcite
boronatrocalcite
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.)
Expired
Application number
DESCH63699D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schott AG
Original Assignee
Jenaer Glaswerk Schott and Gen
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 Jenaer Glaswerk Schott and Gen filed Critical Jenaer Glaswerk Schott and Gen
Priority to DESCH63699D priority Critical patent/DE375308C/en
Application granted granted Critical
Publication of DE375308C publication Critical patent/DE375308C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/06—Boron halogen compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B35/00—Boron; Compounds thereof
    • C01B35/08—Compounds containing boron and nitrogen, phosphorus, oxygen, sulfur, selenium or tellurium
    • C01B35/10—Compounds containing boron and oxygen

Description

Verfahren zum Aufschließen von Boronatrokalzit. Die vorliegende Erfindung betrifft ein Verfahren zum Aufschließen von Boronatrokalzft (südamerikanischem Borkalk). Danach wird der Boronatrokalzit zunächst mit wäßriger Borsäurelösung . behandelt. Diese zersetzt der Boronatrokalzit, indem einerseits durch Anlagerung von Borsäure an das im Ausgangsstoff enthaltene Natriumtetraborat (Borax) das borsäurereichere Natriumdekaborat (Na= O, 5 BZ 03, zo H2 O) entsteht, während anderseits das in dem Ausgangsstoff enthaltene Kalziumborät unangegriffen bleibt. Dem dieses Kalziumborat enthaltenden Schlamm wird dann Schwefelsäure hinzugefügt, wodurch sich dieser Schlamm in Borsäurelauge und schwefelsauren Kalk zerlegt. Das Natriumdekaborat läßt sich in bekannter Weise aus seiner Lauge durch Kristallisation gewinnen. Die ge-,vonnene Borsäurelauge kann wieder als Aufschlußmittel für die erste Stufe des Verfahrens dienen. Das vorliegende Verfahren bietet den Vorzug, daß es von der Verwendung der teueren Borsäure an dem Punkte des Verfahrens abgeht, an dem die Verwendung der Borsäure auf die Geschwindigkeit des Arbeitens und den Wärmeverbrauch keinen wesentlichen Einfluß mehr hat, und an dieser Stelle für die zweite Stufe des Verfahrens ein wohlfeileres Aufschließungsmittel einführt, das aber gleichzeitig die für die erste Stufe erforderliche Borsäurelauge wiederzugewinnen erlaubt.Process for digging boron atrocalcite. The present invention relates to a process for the digestion of Boronatrokalzft (South American boron lime). Then the boronatrocalcite is first treated with aqueous boric acid solution. treated. Boronatrocalcite decomposes these by, on the one hand, by the addition of boric acid to the sodium tetraborate (borax) contained in the starting material, the more boric acid Sodium decaborate (Na = O, 5 BZ 03, zo H2 O) arises, while on the other hand that in the Calcium borate contained in the starting material remains unaffected. That this calcium borate Sulfuric acid is then added to the sludge containing the sludge, thereby creating this sludge broken down into boric acid lye and sulphate of lime. The sodium decaborate can Obtain in a known manner from its liquor by crystallization. The present one Boric acid can be used again as a disintegrant for the first stage of the process to serve. The present method has the advantage of being different from the use of the expensive boric acid goes away at the point in the process where the use of the Boric acid does not have any significant effect on the speed of operation and heat consumption Has more influence, and at this point a cheaper one for the second stage of the procedure Introduces disintegration means, but at the same time that required for the first stage Boric acid lye allowed to be recovered.

Claims (1)

PATENTANSPRUCH: Verfahren zum Aufschließen von Boronatrokalzit, dadurch gekennzeichnet, daß der Boronatrokalzit durch wäßrige Borsäurelösung in Natriumdekaborat und Kalziumborat übergeführt und das so entstandene Kalziumboxat durch Schwefelsäure in Borsäure und schwefelsauren Kalk zerlegt wird.PATENT CLAIM: Process for the digestion of boronatrocalcite, thereby characterized in that the Boronatrocalcite by aqueous boric acid solution in sodium decaborate and calcium borate and the resulting calcium boxate by sulfuric acid is broken down into boric acid and lime sulfuric acid.
DESCH63699D 1921-12-18 1921-12-18 Process for the digestion of boron atrocalcite Expired DE375308C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH63699D DE375308C (en) 1921-12-18 1921-12-18 Process for the digestion of boron atrocalcite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH63699D DE375308C (en) 1921-12-18 1921-12-18 Process for the digestion of boron atrocalcite

Publications (1)

Publication Number Publication Date
DE375308C true DE375308C (en) 1923-05-14

Family

ID=7438069

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH63699D Expired DE375308C (en) 1921-12-18 1921-12-18 Process for the digestion of boron atrocalcite

Country Status (1)

Country Link
DE (1) DE375308C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653818A (en) * 1969-07-10 1972-04-04 Solvay Process for the solubilization of calcium borate present in boron minerals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3653818A (en) * 1969-07-10 1972-04-04 Solvay Process for the solubilization of calcium borate present in boron minerals

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