GB1007873A - Process for the manufacture of boric acid from calcium borate ores - Google Patents

Process for the manufacture of boric acid from calcium borate ores

Info

Publication number
GB1007873A
GB1007873A GB1613163A GB1613163A GB1007873A GB 1007873 A GB1007873 A GB 1007873A GB 1613163 A GB1613163 A GB 1613163A GB 1613163 A GB1613163 A GB 1613163A GB 1007873 A GB1007873 A GB 1007873A
Authority
GB
United Kingdom
Prior art keywords
boric acid
ions
calcium borate
manufacture
bisulphite
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
GB1613163A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1007873A publication Critical patent/GB1007873A/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

Abstract

Boric acid is produced by decomposing calcium borate ores with SO2, both in free form and combined as alkali-metal sulphite or bisulphite. Sulphur dioxide is introduced into a suspension of calcium borate ore in an aqueous solution which contains sodium ions, sulphite and bisulphite ions and borate ions, the pH of the slurry being maintained in the range of 6 to 9.5 during the reaction, the decomposition of the ore being finally completed at a pH value of 6 to 6.5, and after removing the insoluble residue further SO2 is introduced into the filtrate to precipitate boric acid at a pH between 5 and 6, simultaneously regenerating a mother liquor suitable for the next cycle. Boric acid and one or more sodium salts of boric acid and sulphurous acid may be used to provide the desired ions in solution. Specification 238,428 is referred to.
GB1613163A 1962-04-30 1963-04-24 Process for the manufacture of boric acid from calcium borate ores Expired GB1007873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH518762 1962-04-30

Publications (1)

Publication Number Publication Date
GB1007873A true GB1007873A (en) 1965-10-22

Family

ID=4289377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1613163A Expired GB1007873A (en) 1962-04-30 1963-04-24 Process for the manufacture of boric acid from calcium borate ores

Country Status (2)

Country Link
GB (1) GB1007873A (en)
LU (1) LU43587A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454359A (en) * 1966-04-29 1969-07-08 Stauffer Chemical Co Process for producing boric acid from alkali metal borates
US20160355905A1 (en) * 2013-12-11 2016-12-08 Outotec (Finland) Oy Method for treating sulfide-free minerals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454359A (en) * 1966-04-29 1969-07-08 Stauffer Chemical Co Process for producing boric acid from alkali metal borates
US20160355905A1 (en) * 2013-12-11 2016-12-08 Outotec (Finland) Oy Method for treating sulfide-free minerals

Also Published As

Publication number Publication date
LU43587A1 (en) 1963-06-18

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