FR2450279A1 - Chemically attacking finely divided ore - using hot gas in circulation with fine ore particles, with heat and gas recovery to avoid energy waste gas loss and pollution - Google Patents

Chemically attacking finely divided ore - using hot gas in circulation with fine ore particles, with heat and gas recovery to avoid energy waste gas loss and pollution

Info

Publication number
FR2450279A1
FR2450279A1 FR7905326A FR7905326A FR2450279A1 FR 2450279 A1 FR2450279 A1 FR 2450279A1 FR 7905326 A FR7905326 A FR 7905326A FR 7905326 A FR7905326 A FR 7905326A FR 2450279 A1 FR2450279 A1 FR 2450279A1
Authority
FR
France
Prior art keywords
gas
mixt
ore
heat
particles
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.)
Granted
Application number
FR7905326A
Other languages
French (fr)
Other versions
FR2450279B1 (en
Inventor
Jean-Pierre Henin
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.)
Fives Cail Babcock SA
Original Assignee
Fives Cail Babcock SA
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 Fives Cail Babcock SA filed Critical Fives Cail Babcock SA
Priority to FR7905326A priority Critical patent/FR2450279A1/en
Publication of FR2450279A1 publication Critical patent/FR2450279A1/en
Application granted granted Critical
Publication of FR2450279B1 publication Critical patent/FR2450279B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes
    • C22B1/10—Roasting processes in fluidised form
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/02—Roasting processes

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

Method of chemically attacking an ore at high temp. with a gaseous mixt. consists of continuously circulating through a reactor a mixt. of the ore is finely divided form with the gas mixt., sepg. the reaction prod. from the mixt. and recycling the mixt. after heating by indirect heat exchange with hot gases through a heat exchanging wall or direct contact with hot solid particles which are then sepd. off prior to contact between gas mixt. and ore particles. Gas mixt. can be present in excess of the requirements of the reaction with its component in well defined proportions. Gas losses can be reduced to a min. esp. when costly or toxic. Heat loss is reduced to min. by heat exchange without diluting the gas with heating gases and smokes. Heat is transmitted to the ore particles from the heated gas mixt. which holds the particles in suspension during reaction.
FR7905326A 1979-03-01 1979-03-01 Chemically attacking finely divided ore - using hot gas in circulation with fine ore particles, with heat and gas recovery to avoid energy waste gas loss and pollution Granted FR2450279A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7905326A FR2450279A1 (en) 1979-03-01 1979-03-01 Chemically attacking finely divided ore - using hot gas in circulation with fine ore particles, with heat and gas recovery to avoid energy waste gas loss and pollution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7905326A FR2450279A1 (en) 1979-03-01 1979-03-01 Chemically attacking finely divided ore - using hot gas in circulation with fine ore particles, with heat and gas recovery to avoid energy waste gas loss and pollution

Publications (2)

Publication Number Publication Date
FR2450279A1 true FR2450279A1 (en) 1980-09-26
FR2450279B1 FR2450279B1 (en) 1982-10-01

Family

ID=9222626

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7905326A Granted FR2450279A1 (en) 1979-03-01 1979-03-01 Chemically attacking finely divided ore - using hot gas in circulation with fine ore particles, with heat and gas recovery to avoid energy waste gas loss and pollution

Country Status (1)

Country Link
FR (1) FR2450279A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1378748A (en) * 1963-01-09 1964-11-13 Northern Natural Gas Co Process for reducing ferruginous ores to magnetite
US3276858A (en) * 1964-12-07 1966-10-04 Pullman Inc Method for carrying out gas-solids reactions
FR1529136A (en) * 1967-06-23 1968-06-14 Exxon Research Engineering Co Process for the reduction of iron ores by contacting with reducing gases
DE1433291A1 (en) * 1964-03-09 1968-11-07 Armco Steel Corp Fluidized bed reduction of finely divided iron ore and the equipment used for this
US3985547A (en) * 1974-06-17 1976-10-12 Centro Sperimentale Metallurgico S.P.A. Iron ore reduction in multiple fluidized beds
FR2320351A1 (en) * 1975-08-05 1977-03-04 Centro Speriment Metallurg PROCESS FOR DIRECT REDUCTION OF IRON ORE IN FLUIDIZED BED REACTORS AND PRODUCTS OBTAINED

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1378748A (en) * 1963-01-09 1964-11-13 Northern Natural Gas Co Process for reducing ferruginous ores to magnetite
DE1433291A1 (en) * 1964-03-09 1968-11-07 Armco Steel Corp Fluidized bed reduction of finely divided iron ore and the equipment used for this
US3276858A (en) * 1964-12-07 1966-10-04 Pullman Inc Method for carrying out gas-solids reactions
FR1529136A (en) * 1967-06-23 1968-06-14 Exxon Research Engineering Co Process for the reduction of iron ores by contacting with reducing gases
US3985547A (en) * 1974-06-17 1976-10-12 Centro Sperimentale Metallurgico S.P.A. Iron ore reduction in multiple fluidized beds
FR2320351A1 (en) * 1975-08-05 1977-03-04 Centro Speriment Metallurg PROCESS FOR DIRECT REDUCTION OF IRON ORE IN FLUIDIZED BED REACTORS AND PRODUCTS OBTAINED

Also Published As

Publication number Publication date
FR2450279B1 (en) 1982-10-01

Similar Documents

Publication Publication Date Title
JPS5725417A (en) Heat-treating apparatus for preparing carbon fiber
SE8105712L (en) METHOD AND APPARATUS FOR GAS REDUCTION OF IRON ORE TO IRON SPAM
FR2450279A1 (en) Chemically attacking finely divided ore - using hot gas in circulation with fine ore particles, with heat and gas recovery to avoid energy waste gas loss and pollution
JPS5758012A (en) Method and device for waste gas treatment
JPS5675508A (en) Heating or heat reducing method of converter charge raw material utilizing converter exhaust gas
CN110864555A (en) Hot flue gas circulation-based desulfurization ash indirect heating oxidation modification system and method
JPS5567320A (en) Method of removing undesirable gas component from waste gas with high temperature
GB2003128A (en) Process and apparatus for the combined treatment of solid waste and waste water
ES8106762A1 (en) Process for treating metals using recycled gases
FR2418422A1 (en) Storing and recovering heat energy - by decomposing calcium carbonate and recombining the products elsewhere
JPS569324A (en) Supply of atmospheric gas to continuous heat treatment furnace
JPS5554532A (en) Ammonia recovering method
JPS5615843A (en) Regeneration of denitrification catalyst
JPS5220457A (en) Liquid heating apparatus
JPS5594469A (en) Method and apparatus for washing of treating material of oil stuck steel material member or the like
JPS57187523A (en) Reheating method of treated gas in flue gas desulfurization
JPS55104433A (en) Continuous heat treating apparatus
FR2441138A1 (en) Drying and heating small metallic particles - in reducing atmos. prior to briquetting for remelting
JPS56142314A (en) Scrap preheating method and device therefor
JPS63252978A (en) Manufacture of expanded graphite
JPS5616618A (en) Continuous annealing furnace
ES8307279A1 (en) Process for heating coke ovens and system for carrying out the process.
JPS5815714B2 (en) Scrap charging method
SU904326A1 (en) METHOD FOR DIRECT RECOVERY OF METALS FROM OXIDES
ES8400491A1 (en) Method of minimizing energy consumption when reducing iron oxide with reducing gases

Legal Events

Date Code Title Description
ST Notification of lapse