SU529806A3 - Method of leaching goethite-containing bauxite - Google Patents

Method of leaching goethite-containing bauxite

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Publication number
SU529806A3
SU529806A3 SU731948580A SU1948580A SU529806A3 SU 529806 A3 SU529806 A3 SU 529806A3 SU 731948580 A SU731948580 A SU 731948580A SU 1948580 A SU1948580 A SU 1948580A SU 529806 A3 SU529806 A3 SU 529806A3
Authority
SU
USSR - Soviet Union
Prior art keywords
bauxite
goethite
reaction
solution
leaching
Prior art date
Application number
SU731948580A
Other languages
Russian (ru)
Inventor
Пинтер Тихамер
Шигмонд Дьердь
Шиклоши Петер
Шоймар Карой
Тот Пал
Замбо Янош
Орбан Ференц
Орбан Мария
Original Assignee
Алутерв Алюминиумпари Тервезэ Валлалат (Инопредприятие)
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.)
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Publication date
Application filed by Алутерв Алюминиумпари Тервезэ Валлалат (Инопредприятие) filed Critical Алутерв Алюминиумпари Тервезэ Валлалат (Инопредприятие)
Application granted granted Critical
Publication of SU529806A3 publication Critical patent/SU529806A3/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01FCOMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00Compounds of aluminium
    • C01F7/02Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/04Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/06Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process
    • C01F7/062Digestion
    • C01F7/0633Digestion characterised by the use of additives

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Glass Compositions (AREA)

Claims (2)

ща с  в кристаллической решетке гетита At 2.-5 п ти окись ванади  переход т в раствор, а в результате преобразовани  гетита в гематит значительно улучшаетс  отделение красного шлама. При осуществлении этого способа тем пература реакции должна соответствовать содержанию гетита в боксите и энергии св зи соединенного с гетитом алюмини  (22О-28О°С , предпочтительно 24O-25O Реакци  проводитс  в присутствии 1-6% СскО и 0,5-12% поваренной соли ( в рас чете на сухой вес боксита). Концентраци  щелочи должна соответствовать эконо мическому оптимуму соответствующего варианта процесса Байера, составл   1ОО-ЗОО г/л , предпочтительно 2ОО-25О г/л No2.0ц . Пример. 37О кг боксита и 11 кг 20 (3%) СаО загружают в 1 м щелочи, содержащей 24О г/л , и 1О г/л поваренной соли (мол рное соотношение 3,4). Реакци  продолжаетс  при 245°С 1 час, по окончании реакции каустический модуль равен 1,34. Состав боксита и красного шлама {химический состав и состав по минералам; указаны в таблице. В этих услови х диаспор реагирует нацело. Степень преобразовани  алюмогетита и алюмомаггемита в гематит составл ет 85%. Вьрсод алюмини  возрастает до 89% (обычный показатель способа Байера равен 84%). Это объ сн етс  разложением минералов алюмогетита и диаспора. Мол рное отношение Oj в красном шламе составл ет 0,6О(в известных процессах оно равно О,75-О,8О). Дол  перещедшей из боксита в раствор п тиокиси ванади  повышаетс  с 34 до 6О%. Формула изобретени  Способ выщелачивани  гетитсодержащих бокситов обработкой оборотным алюминатнымраствором с концентрацией 1ОО-ЗОО г/лS каустической щелочи при 22О-28О°С, с введением добавки окиси кальци  в ко- личестве 1-6 вес.%, отличающий- с   тем, что, с целью повыщени  извле5298О 6 6 чени  полезных компонентов в раствор, выщелачивание ведут в присутствии хлорида натри , вз того в количестве О,5-12 вес,°/. в расчете на вес сухого боксита, Источники информации, прин тые во внимание при экспертизе ; 1. Патент Франции № 128ООО9, кл. С 22 в, I960. In the crystal lattice of goethite At 2. 5, vanadium oxide passes into solution, and converting goethite to hematite greatly improves the separation of red mud. When implementing this method, the reaction temperature should correspond to the content of goethite in bauxite and the binding energy of aluminum combined with goethite (22O-28O ° C, preferably 24O-25O). The reaction is carried out in the presence of 1-6% CscO and 0.5-12% sodium chloride. (calculated on the dry weight of bauxite.) The alkali concentration should correspond to the economic optimum of the corresponding Bayer process variant, was 1OO-ZOO g / l, preferably 2OO-25O g / l No2.0c. Example. 37O kg of bauxite and 11 kg 20 (3%) CaO load in 1 m of alkali containing 24O g / l, and 1O g / l in cooked salts (molar ratio 3,4). The reaction continues at 245 ° C for 1 hour, at the end of the reaction the caustic module is 1.34. The composition of bauxite and red mud {chemical composition and composition by minerals; are listed in the table. In these conditions The degree of conversion of alumogetite and alumomagemite to hematite is 85%. Virsod aluminum increases to 89% (the typical Bayer method is 84%). This is explained by the decomposition of the alumogetite and diaspore minerals. The molar ratio Oj in the red mud is 0.6O (in known processes it is O, 75-O, 8O). The amount of vanadium pentoxide that has been transferred from bauxite to solution rises from 34 to 6%. The invention of the method of leaching goethite-containing bauxites by treating with a reverse aluminate solution with a concentration of 1OO-ZOO g / lS caustic alkali at 22 ° -28 ° C, with the addition of calcium oxide in an amount of 1-6 wt.%, Which differs from the purpose of enhancing extraction of useful components into solution, leaching is carried out in the presence of sodium chloride, taken in an amount of 0, 5–12 weight, ° /. based on the weight of dry bauxite, Sources of information taken into account in the examination; 1. Patent of France No. 128OOO9, cl. From 22 to, I960. 2. Труды ВАМИ, Л., 1968,с.5-11,2. Works YOU, L., 1968, p.5-11,
SU731948580A 1972-07-14 1973-07-13 Method of leaching goethite-containing bauxite SU529806A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUAU280A HU164863B (en) 1972-07-14 1972-07-14

Publications (1)

Publication Number Publication Date
SU529806A3 true SU529806A3 (en) 1976-09-25

Family

ID=10993200

Family Applications (1)

Application Number Title Priority Date Filing Date
SU731948580A SU529806A3 (en) 1972-07-14 1973-07-13 Method of leaching goethite-containing bauxite

Country Status (9)

Country Link
JP (1) JPS5213798B2 (en)
CA (1) CA991414A (en)
DE (1) DE2335732B2 (en)
FR (1) FR2208841B1 (en)
GB (1) GB1382980A (en)
HU (1) HU164863B (en)
IN (1) IN139043B (en)
IT (1) IT994952B (en)
SU (1) SU529806A3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116200608B (en) * 2023-01-30 2023-12-05 中铝郑州有色金属研究院有限公司 Method for recycling iron and aluminum from red mud

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737514A (en) * 1970-10-05 1973-06-05 Kaiser Aluminium Chem Corp Extraction of alumina from ores

Also Published As

Publication number Publication date
FR2208841B1 (en) 1976-09-17
IN139043B (en) 1976-05-01
CA991414A (en) 1976-06-22
JPS4984997A (en) 1974-08-15
GB1382980A (en) 1975-02-05
JPS5213798B2 (en) 1977-04-16
HU164863B (en) 1974-05-28
AU5750673A (en) 1975-01-09
FR2208841A1 (en) 1974-06-28
DE2335732A1 (en) 1974-01-31
DE2335732B2 (en) 1978-09-28
IT994952B (en) 1975-10-20

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