FR2124840A5 - Alumina calcining plant feed - employing a hot gas feed conveyor - Google Patents

Alumina calcining plant feed - employing a hot gas feed conveyor

Info

Publication number
FR2124840A5
FR2124840A5 FR7202384A FR7202384A FR2124840A5 FR 2124840 A5 FR2124840 A5 FR 2124840A5 FR 7202384 A FR7202384 A FR 7202384A FR 7202384 A FR7202384 A FR 7202384A FR 2124840 A5 FR2124840 A5 FR 2124840A5
Authority
FR
France
Prior art keywords
kiln
cyclone
employing
hot gas
alumina
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
FR7202384A
Other languages
French (fr)
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Application granted granted Critical
Publication of FR2124840A5 publication Critical patent/FR2124840A5/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/2016—Arrangements of preheating devices for the charge
    • F27B7/2025—Arrangements of preheating devices for the charge consisting of a single string of cyclones
    • 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
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • 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
    • C01F7/44—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water
    • C01F7/441—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
    • C01F7/445—Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination making use of a fluidised bed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

In the plant consisting of a kiln and a multi-cyclone waste-heat exchanger system at the kiln inlet side, in which the cyclones are inter-connected by gas pipe lines, the aluminium hydride kiln charge together with optional de-watered alumina and filter dust additions is continuously fed into the last cyclone furthest away from the kiln by injection into the gas pipe line feeding it, which runs as a loop down to ground level and then upwards again, at a point in the lower part of the upwards again, at a point in the lower part of the upward flow section. The method saves plant for conveying feed to cyclone.
FR7202384A 1971-01-28 1972-01-25 Alumina calcining plant feed - employing a hot gas feed conveyor Expired FR2124840A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712103949 DE2103949A1 (en) 1971-01-28 1971-01-28 Device for the continuous feeding of an alumina calcination plant with hydrates of aluminum

Publications (1)

Publication Number Publication Date
FR2124840A5 true FR2124840A5 (en) 1972-09-22

Family

ID=5797141

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7202384A Expired FR2124840A5 (en) 1971-01-28 1972-01-25 Alumina calcining plant feed - employing a hot gas feed conveyor

Country Status (4)

Country Link
DD (1) DD95838A5 (en)
DE (1) DE2103949A1 (en)
FR (1) FR2124840A5 (en)
HU (1) HU165945B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2442414A1 (en) * 1978-11-27 1980-06-20 Pechiney Aluminium IMPROVEMENTS TO PLANTS FOR THE CALCINATION OF ALUMINA AND THE LIKE
FR2549816A1 (en) * 1983-07-28 1985-02-01 Fives Cail Babcock CALCINATION SYSTEM FOR THE PRODUCTION OF MULTIPLE QUALITIES OF ALUMINA AND METHOD OF OPERATING IT
FR2552750A1 (en) * 1983-09-30 1985-04-05 Fives Cail Babcock Process for operating a calcination plant for the production of several grades of alumina.
WO1996036563A1 (en) * 1995-05-17 1996-11-21 Aluchem, Inc. Method and apparatus for making high-grade alumina from low-grade aluminum oxide fines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2442414A1 (en) * 1978-11-27 1980-06-20 Pechiney Aluminium IMPROVEMENTS TO PLANTS FOR THE CALCINATION OF ALUMINA AND THE LIKE
FR2549816A1 (en) * 1983-07-28 1985-02-01 Fives Cail Babcock CALCINATION SYSTEM FOR THE PRODUCTION OF MULTIPLE QUALITIES OF ALUMINA AND METHOD OF OPERATING IT
FR2552750A1 (en) * 1983-09-30 1985-04-05 Fives Cail Babcock Process for operating a calcination plant for the production of several grades of alumina.
WO1996036563A1 (en) * 1995-05-17 1996-11-21 Aluchem, Inc. Method and apparatus for making high-grade alumina from low-grade aluminum oxide fines

Also Published As

Publication number Publication date
HU165945B (en) 1974-12-28
DE2103949A1 (en) 1972-08-17
DD95838A5 (en) 1973-02-20

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Legal Events

Date Code Title Description
ST Notification of lapse