RU2001110358A - METHOD AND DEVICE FOR INSTALLING DRY CLEANING OF EXHAUST GAS OF FURNACE RESTORING ALUMINUM - Google Patents

METHOD AND DEVICE FOR INSTALLING DRY CLEANING OF EXHAUST GAS OF FURNACE RESTORING ALUMINUM

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Publication number
RU2001110358A
RU2001110358A RU2001110358/02A RU2001110358A RU2001110358A RU 2001110358 A RU2001110358 A RU 2001110358A RU 2001110358/02 A RU2001110358/02 A RU 2001110358/02A RU 2001110358 A RU2001110358 A RU 2001110358A RU 2001110358 A RU2001110358 A RU 2001110358A
Authority
RU
Russia
Prior art keywords
gas
alumina
air
fluoride powder
particles
Prior art date
Application number
RU2001110358/02A
Other languages
Russian (ru)
Other versions
RU2224825C2 (en
Inventor
Одд Е. БЬЯРНЁ
Оле К. БЁККМАН
Original Assignee
Абб Флокт Аб
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
Priority claimed from NO984318A external-priority patent/NO314023B1/en
Application filed by Абб Флокт Аб filed Critical Абб Флокт Аб
Publication of RU2001110358A publication Critical patent/RU2001110358A/en
Application granted granted Critical
Publication of RU2224825C2 publication Critical patent/RU2224825C2/en

Links

Claims (5)

1. Способ снижения падения давления, увеличения производительности и улучшения степени разделения на установках для сухой очистки отработанного газа, поступающего от печей восстановления алюминия, отличающийся тем, что производят, по меньшей мере частично, избирательное отделение мелких частиц порошкового фторида от рециркулируемого оксида алюминия.1. A method of reducing pressure drop, increasing productivity and improving the degree of separation in dry gas cleaning plants for exhaust gas from aluminum reduction furnaces, characterized in that at least partially selective fine particles of fluoride powder are recycled from recycled aluminum oxide. 2. Способ по п. 1, отличающийся тем, что используют разность естественной скорости падения для мелких и крупных частиц в воздухе или газе для отделения мелких частиц порошкового фторида от оксида алюминия. 2. The method according to p. 1, characterized in that use the difference in the natural rate of fall for small and large particles in air or gas to separate small particles of fluoride powder from aluminum oxide. 3. Устройство для осуществления способа по одному из пп. 1 и 2, отличающееся тем, что оно содержит одну или несколько наклонных плоскостей для обеспечения гравиметрического движения вниз потока оксида алюминия, причем указанное устройство выполнено с возможностью использования восходящего потока воздуха или газа для удаления мелких частиц порошкового фторида из потока оксида алюминия. 3. A device for implementing the method according to one of paragraphs. 1 and 2, characterized in that it contains one or more inclined planes to provide gravimetric downward movement of the alumina stream, and the specified device is configured to use an upward flow of air or gas to remove small particles of fluoride powder from the alumina stream. 4. Устройство для осуществления способа по п. 1, отличающееся тем, что оно содержит наклонную плоскость для гравиметрического движения вниз потока оксида алюминия, причем отделение мелких от крупных частиц происходит в результате различных свойств текучести, при этом используют наклонный желоб для избирательного накопления и рециркуляции крупных частиц оксида алюминия. 4. The device for implementing the method according to p. 1, characterized in that it contains an inclined plane for gravimetric downward movement of the stream of aluminum oxide, and the separation of small from large particles occurs as a result of various flow properties, while using an inclined trough for selective accumulation and recycling large particles of alumina. 5. Устройство для осуществления способа по п. 1, отличающееся тем, что оно содержит желоб или бассейн для сквозного течения оксида алюминия, причем желоб или бассейн имеют проницаемое для воздуха или газа дно, в результате чего мелкие частицы порошкового фторида удаляются из потока оксида алюминия за счет мощной сквозной продувки с помощью псевдоожиженного воздуха или газа. 5. A device for implementing the method according to claim 1, characterized in that it comprises a trough or a pool for through flow of alumina, the trough or pool having a bottom permeable to air or gas, whereby small particles of fluoride powder are removed from the alumina stream due to powerful through blowing with fluidized air or gas.
RU2001110358/02A 1998-09-17 1999-09-16 Method and device for dry cleaning of waste gas of aluminum reduction furnaces RU2224825C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO19984318 1998-09-17
NO984318A NO314023B1 (en) 1998-09-17 1998-09-17 Method and apparatus for increasing the efficiency of dry treatment plants

Publications (2)

Publication Number Publication Date
RU2001110358A true RU2001110358A (en) 2003-02-10
RU2224825C2 RU2224825C2 (en) 2004-02-27

Family

ID=19902428

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2001110358/02A RU2224825C2 (en) 1998-09-17 1999-09-16 Method and device for dry cleaning of waste gas of aluminum reduction furnaces

Country Status (10)

Country Link
US (1) US6726020B1 (en)
EP (1) EP1115910A1 (en)
AR (1) AR021489A1 (en)
AU (1) AU768438B2 (en)
BR (1) BR9913788B1 (en)
CA (1) CA2344545C (en)
IS (1) IS2371B (en)
NO (1) NO314023B1 (en)
RU (1) RU2224825C2 (en)
WO (1) WO2000015873A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100362140C (en) * 2004-07-06 2008-01-16 贵阳铝镁设计研究院 Fluoride purification process in electrolytic production of aluminum and dust collector therefor
US20060086253A1 (en) * 2004-10-27 2006-04-27 Siddhartha Gaur Cyclone separator cooler
DE102010032207B4 (en) * 2010-07-26 2014-02-13 Süd-Chemie Ip Gmbh & Co. Kg Process for reducing magnetic and / or oxidic impurities in lithium-metal-oxygen compounds
CN110252084A (en) * 2014-06-09 2019-09-20 贝克特尔矿业金属股份有限公司 Integrated gas processing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1416344A (en) 1972-02-18 1975-12-03 Alcan Res & Dev Method of recovering fluorine from aluminium reduction cell waste gases
US3790143A (en) * 1972-07-31 1974-02-05 Fuller Co Removal of fluorides from gases
US4065271A (en) 1973-09-15 1977-12-27 Metallgesellschaft Aktiengesellschaft Process of separating hydrogen fluoride from gases
NO147791C (en) * 1981-02-05 1983-06-15 Norsk Viftefabrikk As PROCEDURE FOR THE SEPARATION OF FINE DUST CONTAINING POLLUTANTS FROM ALUMINUM OXYDE USED AS ADSORBENT IN A DRY CLEANING SYSTEM
CA1197074A (en) * 1981-12-04 1985-11-26 Isaias Loukos Method and apparatus for cleaning waste gases from aluminum production facilities
US4973458A (en) * 1989-05-09 1990-11-27 Westinghouse Electric Corp. Fluidized bed system for removing particulate contaminants from a gaseous stream
WO1995013866A1 (en) * 1993-11-16 1995-05-26 Comalco Aluminium Limited Countercurrent gas-solid contacting
US6290752B1 (en) * 1998-10-22 2001-09-18 Von Roll Umwelttechnik Ag Device and process for adsorption or chemisorption of gaseous constituents from a gas flow

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