IN2015DN00661A - - Google Patents

Info

Publication number
IN2015DN00661A
IN2015DN00661A IN661DEN2015A IN2015DN00661A IN 2015DN00661 A IN2015DN00661 A IN 2015DN00661A IN 661DEN2015 A IN661DEN2015 A IN 661DEN2015A IN 2015DN00661 A IN2015DN00661 A IN 2015DN00661A
Authority
IN
India
Prior art keywords
alumina
raw materials
water vapor
containing raw
crystals
Prior art date
Application number
Inventor
Aleksandr Sergeevich Senyuta
Andrey Vladimirovich Panov
Original Assignee
Obschestvo S Ogranichennoy Otvetstvennostyu Obedinennaya Kompania Rusal Inzh T Ts
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 Obschestvo S Ogranichennoy Otvetstvennostyu Obedinennaya Kompania Rusal Inzh T Ts filed Critical Obschestvo S Ogranichennoy Otvetstvennostyu Obedinennaya Kompania Rusal Inzh T Ts
Publication of IN2015DN00661A publication Critical patent/IN2015DN00661A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/0015—Obtaining aluminium by wet processes
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
    • C01F7/306—Thermal decomposition of hydrated chlorides, e.g. of aluminium trichloride hexahydrate
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/48—Halides, with or without other cations besides aluminium
    • C01F7/56—Chlorides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • C22B7/007—Wet processes by acid leaching
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention relates to metallurgy particularly to acid methods for producing alumina and can be used in processing aluminum containing raw materials including those of a low grade. The method for producing alumina comprises treating aluminum containing raw materials with hydrochloric acid separating aluminum chloride hexahydrate crystals from the supernatant chloride solution and thermally decomposing said crystals in two stages to produce alumina. In order to increase the quality of alumina and decrease energy consumption while achieving high process productivity water vapor is continuously introduced during the second stage of thermal decomposition with a ratio of the total mass of the introduced water vapor to the mass of produced alumina equal to 0.2 5.7.
IN661DEN2015 2012-08-01 2012-08-01 IN2015DN00661A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2012/000631 WO2014021730A1 (en) 2012-08-01 2012-08-01 Method for producing alumina

Publications (1)

Publication Number Publication Date
IN2015DN00661A true IN2015DN00661A (en) 2015-06-26

Family

ID=50028298

Family Applications (1)

Application Number Title Priority Date Filing Date
IN661DEN2015 IN2015DN00661A (en) 2012-08-01 2012-08-01

Country Status (7)

Country Link
US (1) US9631255B2 (en)
CN (1) CN104507868B (en)
AU (1) AU2012386621B2 (en)
CA (1) CA2877854C (en)
IN (1) IN2015DN00661A (en)
RU (1) RU2564360C2 (en)
WO (1) WO2014021730A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015176166A1 (en) * 2014-05-21 2015-11-26 Orbite Technologies Inc. Processes for decomposing aluminum chloride into alumina
RU2705071C1 (en) * 2018-11-07 2019-11-01 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский технологический университет "МИСиС" Method of producing metallurgical alumina by an acid-alkaline method
US11746021B2 (en) 2019-04-18 2023-09-05 Nextchem, Llc High purity aluminum oxide via electrodialysis
AU2019449397A1 (en) * 2019-06-07 2022-01-06 Metso Outotec (Finland) Oy Process and plant for thermal decomposition of aluminium chloride hydrate into aluminium oxide
CN113697840B (en) * 2020-05-21 2023-08-15 江西理工大学 Method for preparing rare earth oxide by subcritical/supercritical steam pyrolysis method
CN113800551A (en) * 2021-10-27 2021-12-17 福建省长汀金龙稀土有限公司 Method for preparing rare earth oxide powder by utilizing steam roasting of rare earth chloride
CN113860349A (en) * 2021-10-27 2021-12-31 福建省长汀金龙稀土有限公司 Method for preparing rare earth oxide powder in short-process green manner

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790704A (en) * 1971-10-28 1973-02-15 Degussa PROCESS FOR THE MANUFACTURE OF OXIDES FINE
DE2524541C2 (en) * 1975-06-03 1986-08-21 Aluminium Pechiney, Lyon Process for the thermal cracking of aluminum chloride hydrate
DE2636855C2 (en) * 1976-08-16 1986-08-21 Aluminium Pechiney, Lyon Process for the thermal cracking of aluminum chloride hydrate
US4158042A (en) 1977-10-07 1979-06-12 Alcan Research And Development Limited Recovery of alumina from siliceous minerals
FR2518986B1 (en) * 1981-12-30 1985-09-06 Criceram PROCESS FOR THE PREPARATION OF HIGH-PURITY ALUMINS FROM IMPURE SOLUTIONS OF ALUMINUM CHLORIDE
US4402932A (en) * 1982-05-07 1983-09-06 The United States Of America As Represented By The Secretary Of The Interior Thermal decomposition of aluminum chloride hexahydrate
SU1258815A1 (en) * 1985-05-22 1986-09-23 Казахский Ордена Трудового Красного Знамени Политехнический Институт Им.В.И.Ленина Method of producing alumina
CN1712355A (en) * 2004-06-15 2005-12-28 住友化学株式会社 Method for producing an alpha - alumina powder
CN101234774B (en) * 2008-03-04 2010-04-21 华东理工大学 Method for preparing aluminum oxide from coal series kaolinite rock or coal gangue
CN101838000A (en) * 2010-04-27 2010-09-22 中国神华能源股份有限公司 Method for producing metallurgical aluminum oxide by using iron-containing solution of aluminum chloride

Also Published As

Publication number Publication date
WO2014021730A1 (en) 2014-02-06
CN104507868B (en) 2018-02-09
RU2013151917A (en) 2015-05-27
RU2564360C2 (en) 2015-09-27
AU2012386621A1 (en) 2015-01-29
AU2012386621B2 (en) 2017-02-02
US20150252447A1 (en) 2015-09-10
CN104507868A (en) 2015-04-08
CA2877854C (en) 2016-10-25
US9631255B2 (en) 2017-04-25
CA2877854A1 (en) 2014-02-06

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