SU554315A1 - Method for producing aluminum by electrolysis of cryolite-alumina melt - Google Patents
Method for producing aluminum by electrolysis of cryolite-alumina meltInfo
- Publication number
- SU554315A1 SU554315A1 SU2105140A SU2105140A SU554315A1 SU 554315 A1 SU554315 A1 SU 554315A1 SU 2105140 A SU2105140 A SU 2105140A SU 2105140 A SU2105140 A SU 2105140A SU 554315 A1 SU554315 A1 SU 554315A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- aluminum
- cryolite
- electrolysis
- fluoride
- alumina melt
- Prior art date
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- Electrolytic Production Of Metals (AREA)
Description
1one
Изобретение относитс к области металлургии , а именно к производству металлического алюмини электролизом криолито-глиноземных расплавов.The invention relates to the field of metallurgy, namely the production of metallic aluminum by the electrolysis of cryolite-alumina melts.
Известен способ получени алюмини электролизом криолитно-глиноземного расплава, включающий введение фтористых солей при приготовлении электролита и корректировке его рабочего состава 1.A method of producing aluminum by the electrolysis of a cryolite-alumina melt, including the introduction of fluoride salts in the preparation of the electrolyte and the adjustment of its working composition 1.
По этому способу в расплавленном криолите раствор ют глинозем, получают электролит с криолитовым отношением 2,6-2,8 и корректируют этот состав в процессе электролиза введением криолита и фторида алюмини .According to this method, alumina is dissolved in molten cryolite, an electrolyte with a cryolite ratio of 2.6-2.8 is obtained and this composition is adjusted in the process of electrolysis by introducing cryolite and aluminum fluoride.
Основными недостатками способа вл етс высока стоимость фторида алюмини и вследствие этого полученного металлического алюмини , а также низка скорость растворени глинозема, усложн юща технологический процесс.The main disadvantages of the process are the high cost of aluminum fluoride and, as a result, the produced aluminum metal, as well as the low rate of alumina dissolution, which complicates the process.
Целью изобретени вл етс снижение затрат на производство алюмини и увеличение скорости растворени кислород- и алюминийсодержащих материалов. Поставленна цель достигаетс тем, что в качестве фтористых солей используют фторид натри и/или оксифторид алюмини , предпочтительно в соотношении 1 :(4,5-:-5) по вес). Указанное весовое соотношение вводимых солей обеспечивает необхбдимое криолитовое отношение. Подача глинозема в ванну осуществл етс обычным пор дком с учетом образовани некоторого количества его по реакции между фтористым натрием и оксифторидом алюмини :The aim of the invention is to reduce the cost of producing aluminum and increasing the dissolution rate of oxygen- and aluminum-containing materials. This goal is achieved by using sodium fluoride and / or aluminum oxyfluoride as fluoride salts, preferably in a ratio of 1: (4.5 -: - 5) by weight). The specified weight ratio of the injected salts provides the necessary cryolite ratio. Alumina is fed into the bath in the usual order, taking into account the formation of a certain amount of it by the reaction between sodium fluoride and aluminum oxyfluoride:
ЗЫаР+ЗА1ОР ЫазА1Рб+А120з.ZYaR + ZA1OR YaZA1Rb + A120z.
Предложенный способ был опробован в лабораторных услови х на кафедре металлургии легких металлов Московского институтаThe proposed method was tested in laboratory conditions at the Department of Metallurgy of Light Metals of the Moscow Institute
стали и сплавов.steel and alloys.
Исходна навеска солей дл приготовлени электролита : 170 г криолита, 5 г фторида натри и 25 г оксифторида алюмини . Полученный электролит характеризовалс криолитовым отношением 2,7 и содержал около 6,5 вес. % глинозема. Электролиз вели при 960°С, плотности тока на электродах lA/cM и силе тока 14А. Длительность электролиза 2 часа. Получено алюмини 7,55 г. Выход поInitial salt addition for electrolyte preparation: 170 g of cryolite, 5 g of sodium fluoride and 25 g of aluminum oxyfluoride. The electrolyte obtained was characterized by a cryolite ratio of 2.7 and contained about 6.5 wt. % alumina. Electrolysis was carried out at 960 ° С, current density on lA / cM electrodes and current strength 14А. Duration of electrolysis is 2 hours. Aluminum obtained 7.55 g. Output by
току составил 80,5%.current was 80.5%.
Технико-экономическа эффективность изобретени заключаетс в том, что взамен дорогосто щих криолита и фторида алюмини при ползчении алюмини расходуютс фторид натри и оксифторид алюмини , стоимость которых значительно . В расчете на производительность завода 400 тыс. т А1 в год общий экономический эффект, по оценке Московского института стали и сплавов, составитThe technical and economic efficiency of the invention is that instead of expensive cryolite and aluminum fluoride, aluminum fluoride and aluminum oxyfluoride are consumed in the crawling of aluminum, the cost of which is significant. Based on the plant’s capacity of 400 thousand tons of A1 per year, the overall economic effect, according to the Moscow Institute of Steel and Alloys, will be
около 4 млн. руб.about 4 million rubles.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2105140A SU554315A1 (en) | 1975-02-12 | 1975-02-12 | Method for producing aluminum by electrolysis of cryolite-alumina melt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2105140A SU554315A1 (en) | 1975-02-12 | 1975-02-12 | Method for producing aluminum by electrolysis of cryolite-alumina melt |
Publications (1)
Publication Number | Publication Date |
---|---|
SU554315A1 true SU554315A1 (en) | 1977-04-15 |
Family
ID=20610099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2105140A SU554315A1 (en) | 1975-02-12 | 1975-02-12 | Method for producing aluminum by electrolysis of cryolite-alumina melt |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU554315A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019156544A1 (en) * | 2018-02-12 | 2019-08-15 | Руслан УТЕГЕНОВ | Aluminum metal production |
-
1975
- 1975-02-12 SU SU2105140A patent/SU554315A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019156544A1 (en) * | 2018-02-12 | 2019-08-15 | Руслан УТЕГЕНОВ | Aluminum metal production |
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