FR2034309A1 - Recovery of iron from hydrochloric acid - etching baths - Google Patents

Recovery of iron from hydrochloric acid - etching baths

Info

Publication number
FR2034309A1
FR2034309A1 FR6907167A FR6907167A FR2034309A1 FR 2034309 A1 FR2034309 A1 FR 2034309A1 FR 6907167 A FR6907167 A FR 6907167A FR 6907167 A FR6907167 A FR 6907167A FR 2034309 A1 FR2034309 A1 FR 2034309A1
Authority
FR
France
Prior art keywords
recovery
iron
hydrochloric acid
etching baths
reactor
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.)
Granted
Application number
FR6907167A
Other languages
French (fr)
Other versions
FR2034309B1 (en
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.)
Wean United Inc
Original Assignee
Wean United Inc
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 Wean United Inc filed Critical Wean United Inc
Priority to FR6907167A priority Critical patent/FR2034309A1/en
Publication of FR2034309A1 publication Critical patent/FR2034309A1/en
Application granted granted Critical
Publication of FR2034309B1 publication Critical patent/FR2034309B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/08—Ferroso-ferric oxide (Fe3O4)

Abstract

Recovery of iron from hydrochloric acid etching baths Process comprises passing spent etching soln. and a lime slurry to a reactor both at a temp between 82 degrees C and the b.pt. of the liquids in quantities to maintain a pH of 8-10 in the reactor, and mixing these for at least 5 hrs. by bubbling air through them so forming Fe2O3 which is subsequently separated from the residual liquid phase.
FR6907167A 1969-03-13 1969-03-13 Recovery of iron from hydrochloric acid - etching baths Granted FR2034309A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6907167A FR2034309A1 (en) 1969-03-13 1969-03-13 Recovery of iron from hydrochloric acid - etching baths

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6907167A FR2034309A1 (en) 1969-03-13 1969-03-13 Recovery of iron from hydrochloric acid - etching baths

Publications (2)

Publication Number Publication Date
FR2034309A1 true FR2034309A1 (en) 1970-12-11
FR2034309B1 FR2034309B1 (en) 1973-11-16

Family

ID=9030583

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6907167A Granted FR2034309A1 (en) 1969-03-13 1969-03-13 Recovery of iron from hydrochloric acid - etching baths

Country Status (1)

Country Link
FR (1) FR2034309A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US802928A (en) * 1905-01-19 1905-10-24 Edward G Portner Manufacture of printing-ink pigments.
FR858143A (en) * 1938-08-10 1940-11-18 Ig Farbenindustrie Ag Process for the production of black pigments based on iron oxide
FR858142A (en) * 1938-08-10 1940-11-18 Ig Farbenindustrie Ag Process for the production of black pigments based on iron oxide
US3261665A (en) * 1962-11-05 1966-07-19 Du Pont Process for the treatment of waste sulfuric acid pickle liquor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US802928A (en) * 1905-01-19 1905-10-24 Edward G Portner Manufacture of printing-ink pigments.
FR858143A (en) * 1938-08-10 1940-11-18 Ig Farbenindustrie Ag Process for the production of black pigments based on iron oxide
FR858142A (en) * 1938-08-10 1940-11-18 Ig Farbenindustrie Ag Process for the production of black pigments based on iron oxide
US3261665A (en) * 1962-11-05 1966-07-19 Du Pont Process for the treatment of waste sulfuric acid pickle liquor

Also Published As

Publication number Publication date
FR2034309B1 (en) 1973-11-16

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Legal Events

Date Code Title Description
ST Notification of lapse