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1. WO2018217739 - EXTRACTION OF IRON (III) OXIDE FROM DIFFERENT IRON-CONTAINING ORES

Publication Number WO/2018/217739
Publication Date 29.11.2018
International Application No. PCT/US2018/033876
International Filing Date 22.05.2018
IPC
C01G 49/06 2006.1
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F94
49Compounds of iron
02Oxides; Hydroxides
06Ferric oxide
C22B 3/10 2006.1
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
BPRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
3Extraction of metal compounds from ores or concentrates by wet processes
04by leaching
06in inorganic acid solutions
10Hydrochloric acid
CPC
C01G 49/02
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
49Compounds of iron
02Oxides; Hydroxides
C01G 49/06
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
49Compounds of iron
02Oxides; Hydroxides
06Ferric oxide (Fe2O3)
C01P 2002/72
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
70defined by measured X-ray, neutron or electron diffraction data
72by d-values or two theta-values, e.g. as X-ray diagram
C01P 2002/85
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2002Crystal-structural characteristics
80defined by measured data other than those specified in group C01P2002/70
85by XPS, EDX or EDAX data
C01P 2004/04
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2004Particle morphology
01depicted by an image
04obtained by TEM, STEM, STM or AFM
C01P 2006/80
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
2006Physical properties of inorganic compounds
80Compositional purity
Applicants
  • THE AMERICAN UNIVERSITY IN CAIRO [US]/[US]
Inventors
  • ALLAM, Nageh, K.
  • ALY, Mahmoud, M.
Agents
  • JACOBS, Ron
  • PARRIS, James
  • LODENKAMPER, Robert
  • MCFARLANE, Thomas, J.
Priority Data
62/509,43222.05.2017US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) EXTRACTION OF IRON (III) OXIDE FROM DIFFERENT IRON-CONTAINING ORES
(FR) EXTRACTION D'OXYDE DE FER (III) À PARTIR DE DIFFÉRENTS MINERAIS CONTENANT DU FER
Abstract
(EN) A method of extraction of pure iron (III) oxide from bulk iron ore is provided that includes crushing and grinding, using a crushing machine, raw hematite ore, where a milled ore is formed, water-washing the milled ore by rinsing under continuous stirring conditions, dilute acid-washing the milled ore with diluted hydrochloric acid under continuous stirring conditions, immersing the dilute acid-washed milled ore in concentrated acid under the continuous stirring conditions, and applying heat, treating the heated and immersed milled ore with an alkali to form a precipitate, washing with water the precipitate to purify the precipitate, and drying the purified precipitate, and igniting the purified dry precipitate to extract a pure iron (III) oxide from a bulk iron ore.
(FR) L'invention concerne une méthode d'extraction d'oxyde de fer pur (III) à partir de minerai de fer en vrac qui comprend le concassage et le broyage, à l'aide d'une machine de concassage, de minerai d'hématite brut, où un minerai broyé est formé, le lavage à l'eau du minerai broyé par rinçage dans des conditions d'agitation continue, le lavage à l'acide dilué du minerai broyé avec de l'acide chlorhydrique dilué dans des conditions d'agitation continue, l'immersion du minerai broyé lavé à l'acide dilué dans de l'acide concentré dans les conditions d'agitation continue, et l'application de chaleur, le traitement du minerai broyé chauffé et immergé avec un alcali pour former un précipité, le lavage avec de l'eau du précipité pour purifier le précipité, et le séchage du précipité purifié, et l'allumage du précipité sec purifié pour extraire un oxyde de fer (III) pur à partir d'un minerai de fer en vrac.
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