[go: up one dir, main page]

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]

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)

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

Similar Documents

Publication Publication Date Title
GB1043282A (en) Process for the production of finely divided silicon dioxide
GB1404072A (en) Purification of gaseous effluent
FR2034309A1 (en) Recovery of iron from hydrochloric acid - etching baths
ES423150A1 (en) Process and an apparatus for recovering arsenic trioxide from gases
GB1454577A (en) Process for purifying quartz sand
GB1308412A (en) Purification of polyglycerols
GB1340505A (en) Treatment of aluminium-containing waste solutions
OA04396A (en) Process for the chemical purification of wastewater and device for implementing this process.
GB1500343A (en) Process for preparing aminoarylsulphonic acids
GB1126232A (en) A method of treating a waste acid solution obtained from pickling silicon steel sheets
FR2090873A5 (en) Aminoalkylene phosphonic acids continuous prodn
GB1530489A (en) Process for the removal of mercury from aqueous solutions
NL7501770A (en) PROCESS FOR THE PREPARATION OF FREE FLOW IRON (II) SULPHATE HEPTAHYDRATE.
CA1023736A (en) Process for recovery of cyanuric acid from treated chlorinator mother liquor
ES480302A1 (en) A method of purifying a substance by the selective alkaline carbonate leaching of said substance to remove uranium therefrom.
OA03990A (en) Process for removing zinc from industrial sodium aluminate liquors.
Spater Regeneration of Hydrochloric Acid from Waste Pickle Liquor
GB1238996A (en)
GB1276822A (en) Organo-phosphonic acids
FR2146630A5 (en) Photo-hardenable printing plate - prodn without hardening prior to etching
FR2201920A1 (en) Ind waste water treatment - by discontinuous extraction of dissolved substan-ces
GB1211682A (en) Improvements in interfacial processing involving gas together with other phases including one liquid phase
FR2168912A1 (en) Alkali haloaluminates prepn - prod used in metal sulphides and sulphoselenides prodn
GB1015107A (en) Improvements in or relating to cyclohexylamine sulphamic acid salts
GB1091365A (en) Process for producing 5-guanylic acid

Legal Events

Date Code Title Description
ST Notification of lapse