SU321081A1 - Method of decomposing aluminate solutions - Google Patents

Method of decomposing aluminate solutions

Info

Publication number
SU321081A1
SU321081A1 SU6901392215A SU1392215A SU321081A1 SU 321081 A1 SU321081 A1 SU 321081A1 SU 6901392215 A SU6901392215 A SU 6901392215A SU 1392215 A SU1392215 A SU 1392215A SU 321081 A1 SU321081 A1 SU 321081A1
Authority
SU
USSR - Soviet Union
Prior art keywords
decomposition
temperature
decomposing
solutions
aluminate
Prior art date
Application number
SU6901392215A
Other languages
Russian (ru)
Inventor
Л.Г. Романов
Б.Ш. Джумабаев
Б.С. Поважный
Б.И. Лопатин
Л.П. Ни
Б.А. Смирнов
В.Н. Васильев
Э.У. Даулбаев
Original Assignee
Институт Металлургии И Обогащения Ан Казахской Сср
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 Институт Металлургии И Обогащения Ан Казахской Сср filed Critical Институт Металлургии И Обогащения Ан Казахской Сср
Priority to SU6901392215A priority Critical patent/SU321081A1/en
Application granted granted Critical
Publication of SU321081A1 publication Critical patent/SU321081A1/en

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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
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/144—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
    • C01F7/145—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process characterised by the use of a crystal growth modifying agent other than aluminium hydroxide seed
    • 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
    • C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
    • C01F7/14—Aluminium oxide or hydroxide from alkali metal aluminates
    • C01F7/141—Aluminium oxide or hydroxide from alkali metal aluminates from aqueous aluminate solutions by neutralisation with an acidic agent

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Description

Изобретение относитс  к пройзвопств глинозема. Известен способ разложени  алюмина ных растворов с получением, глинозема введением в них затравки фосфорных сое аинений при перемешивании в течение 48-70 ч и понижении температуры с 65-7О до . При этом алюминатный раствор после фильтраций с температурой 90 С перец декомпозицией проходит стацию предварительного охлаждени  в скрубберах-Охладител х QO начальной температуры декомпозиции 65-7О С. После декомпозиции маточный раствор с температурой 4О-45 С направл ют на вьтарку, где вновь нагревают до температуры кипени  Степень разложени  за 48 ч составл ет 51,6%. Однако охлаждение больших объемов алюминатного раствора (800000ЮООООО л/ч) перед декомпозицией и их последующее нагревание перед вь)паркой требуют больших энергетических затрат, достигающих до 4О-6О% от sHefUгозатрат в себестоимости глинозема. С целью повышени  степени разложени  и упрощени  процесса, предлагаетс  раз ложение начинать при 85-90 С и оканчивать при 5О С-. Это позвол ет степень разложени  алюминатных растворов за 48 ч цо 55-56% и упростить процесс, исключ1ив стадию охлаждени  растворов. Пример 1. Полупромышленное высокотемпературное разложение произ- | водственньж растворов ветви спекани  Павлодарского алюминиевого завода про4 вод т с добавкой фосфорной кислоты. Объем раствора 4ОООО. л. После введени  кислоты температура раствора соответствует 9О С, конечна  температура деком- позиции 50 С. Процесс разложени  протокает в течение 60 ч при равномерном снижении температуры и за 24, 48 и 60 чThis invention relates to alumina prozvopstv. There is a known method of decomposing aluminous solutions with the production of alumina by introducing into them the seeds of phosphoric soyenes with stirring for 48-70 h and lowering the temperature from 65-7 ° to. At the same time, the aluminate solution after filtration at a temperature of 90 ° C. Pepper decomposition passes the precooling station in scrubber-coolers QO of the initial decomposition temperature of 65-7 ° C. After decomposition, the mother liquor at a temperature of 4O-45 ° C is directed to the upper temperature, where it is again heated to boiling: The decomposition rate for 48 hours is 51.6%. However, the cooling of large volumes of aluminate solution (800000 LUOOO l / h) before decomposition and their subsequent heating before the park requires a large energy expenditure, reaching up to 4O-6O% of sHefU costs in the cost of alumina. In order to increase the degree of decomposition and simplify the process, it is proposed to start decomposition at 85-90 ° C and terminate at 5 ° C-. This allows the degree of decomposition of aluminate solutions in 48 hours to 55-56% and simplify the process, excluding the stage of cooling the solutions. Example 1. Semi-industrial high-temperature decomposition produced- | Water solutions of the sintering branch of the Pavlodar aluminum smelter are filled with phosphoric acid. Volume of solution 4oooo. l After the introduction of the acid, the temperature of the solution corresponds to 9 ° C, the final temperature of decomposition is 50 ° C. The decomposition process runs for 60 hours with a uniform decrease in temperature and 24, 48 and 60 hours.

3 32108143 3210814

степень разложени  соответственно соста-60 ч степень разложени  соответственdegree of decomposition, respectively, composition-60 h; degree of decomposition, respectively.

вит , 55 и 58,4%,,но составл ет 38,7 5О,6 и 55,4%Пример 2. ПолупромышленноеVit, 55 and 58.4%, but 38.7 5O, 6 and 55.4%. Example 2. Semi-industrial

Claims (1)

высокотемпературное разложение произ-Формула изобретени high temperature decomposition of pro-formula inventions BoflCTBeHHMs растворов ветви спекани  5Способ разложени  алюминатных раст Павлодарского алюминпевого завода про-воров при понижении температуры с ввеводйт с добавкой фосфата алюмини .цением в них фосфорных соединений, о т Объем раствора в опыте 40000 л. На-личающийс  тем, что, с цельюBoflCTBeHHMs of sintering branch solutions 5A method of decomposing aluminate plants of the Pavlodar Aluminaev propulsion plant when the temperature drops from the input with the addition of aluminum phosphate. Phosphoric compounds are added to them, about t. The solution volume in the experiment is 40000 l. In order to чалъна  температура декомпозицииповышени  степени разложени  и упроше85 С, йзйечна  5О С. Про дол житель ни  процесса, разложение: начинают приThe decomposition temperature of the increase in the degree of decomposition and simpler is 85 ° C, it is 5 ° C. During the process, decomposition: starts at ность разложени  60 ч и за 24, 48 и85-90 С и оканчивают при 50°С.decomposition of 60 hours and 24, 48 and 85-90 C and finish at 50 ° C.
SU6901392215A 1969-12-29 1969-12-29 Method of decomposing aluminate solutions SU321081A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU6901392215A SU321081A1 (en) 1969-12-29 1969-12-29 Method of decomposing aluminate solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU6901392215A SU321081A1 (en) 1969-12-29 1969-12-29 Method of decomposing aluminate solutions

Publications (1)

Publication Number Publication Date
SU321081A1 true SU321081A1 (en) 1979-01-05

Family

ID=20449155

Family Applications (1)

Application Number Title Priority Date Filing Date
SU6901392215A SU321081A1 (en) 1969-12-29 1969-12-29 Method of decomposing aluminate solutions

Country Status (1)

Country Link
SU (1) SU321081A1 (en)

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