ES280373A1 - Procedimiento de obtenciën de corindën por reducciën carbotermica de minerales aluminosos - Google Patents

Procedimiento de obtenciën de corindën por reducciën carbotermica de minerales aluminosos

Info

Publication number
ES280373A1
ES280373A1 ES0280373A ES280373A ES280373A1 ES 280373 A1 ES280373 A1 ES 280373A1 ES 0280373 A ES0280373 A ES 0280373A ES 280373 A ES280373 A ES 280373A ES 280373 A1 ES280373 A1 ES 280373A1
Authority
ES
Spain
Prior art keywords
stage
mineral
reduction
electro
coke
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
ES0280373A
Other languages
English (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.)
Pechiney SA
Original Assignee
Pechiney SA
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 Pechiney SA filed Critical Pechiney SA
Publication of ES280373A1 publication Critical patent/ES280373A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C01F7/46—Purification of aluminium oxide, aluminium hydroxide or aluminates
    • 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
    • C01F7/38—Preparation of aluminium oxide by thermal reduction of aluminous minerals
    • 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
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys

Landscapes

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

Abstract

Procedimiento de obtención de corindón por reducción carbotérmica de minerales aluminosos, en dos etapas, por tratamiento de este mineral en presencia de un agente reductor a temperatura inferior a unos 1500ºC , luego tratamiento del mineral intermediario así obtenido en un horno eléctrico de arco voltaico, caracterizado porque se trata en primer lugar, en un horno de combustión a temperatura superior a unos 700ºC , un mineral cuya relacion "R" del peso de oxígeno, unido al estado de óxidos de hierro, de silicio y de titanio, al de la alúmina es al menos igual al 19% por una cantidad de agente reductor al menos igual a la estoequiométricamente necesaria para fijar la cantidad de oxígeno definida por la disminución de "R" hasta un valor inferior al 19% luego se trata, en un horno eléctrico de arco voltaico, el mineral intermediario así obtenido que contiene prácticamente la totalidad del hierro y del silicio presente en el mineral del principio con carbón en cantidad por lo menos igual a laestoequiométricamente necesaria para la reducción de las impurezas oxidadas contenidas, según toda técnica conocida.
ES0280373A 1961-08-30 1962-08-29 Procedimiento de obtenciën de corindën por reducciën carbotermica de minerales aluminosos Expired ES280373A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR871923A FR1306089A (fr) 1961-08-30 1961-08-30 Procédé de traitement des minerais pauvres en oxyde d'aluminium

Publications (1)

Publication Number Publication Date
ES280373A1 true ES280373A1 (es) 1963-03-16

Family

ID=8761977

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0280373A Expired ES280373A1 (es) 1961-08-30 1962-08-29 Procedimiento de obtenciën de corindën por reducciën carbotermica de minerales aluminosos

Country Status (6)

Country Link
CH (1) CH398517A (es)
DE (1) DE1183487B (es)
ES (1) ES280373A1 (es)
FR (1) FR1306089A (es)
GB (1) GB1017211A (es)
LU (1) LU42285A1 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116535199B (zh) * 2023-05-22 2024-09-13 江苏朗耐德耐火材料有限公司 一种含氟物料危废回转窑用不定形耐火材料及其制备方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE143901C (es) *

Also Published As

Publication number Publication date
FR1306089A (fr) 1962-10-13
DE1183487B (de) 1964-12-17
GB1017211A (en) 1966-01-19
LU42285A1 (es) 1963-03-01
CH398517A (fr) 1966-03-15

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