IT1109109B - Reducing metal oxide pellets - by feeding them down retort with solid reductant to produce gases flowing in co-current with charge and removing them from base - Google Patents

Reducing metal oxide pellets - by feeding them down retort with solid reductant to produce gases flowing in co-current with charge and removing them from base

Info

Publication number
IT1109109B
IT1109109B IT6915378A IT6915378A IT1109109B IT 1109109 B IT1109109 B IT 1109109B IT 6915378 A IT6915378 A IT 6915378A IT 6915378 A IT6915378 A IT 6915378A IT 1109109 B IT1109109 B IT 1109109B
Authority
IT
Italy
Prior art keywords
retort
charge
pref
gas
current
Prior art date
Application number
IT6915378A
Other languages
Italian (it)
Other versions
IT7869153A0 (en
Original Assignee
Ferriere Arvedi E C S P A
Kinglor Metor Spa
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
Publication of IT7869153A0 publication Critical patent/IT7869153A0/en
Application filed by Ferriere Arvedi E C S P A, Kinglor Metor Spa filed Critical Ferriere Arvedi E C S P A
Priority to IT6915378A priority Critical patent/IT1109109B/en
Priority to SE7906778A priority patent/SE7906778L/en
Priority to ZA00794281A priority patent/ZA794281B/en
Priority to AU50340/79A priority patent/AU5034079A/en
Priority to DE19792935466 priority patent/DE2935466A1/en
Priority to ES484139A priority patent/ES484139A1/en
Priority to GB7932022A priority patent/GB2034755A/en
Priority to FR7923350A priority patent/FR2436822A1/en
Priority to DD215644A priority patent/DD146190A5/en
Application granted granted Critical
Publication of IT1109109B publication Critical patent/IT1109109B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/04—Making spongy iron or liquid steel, by direct processes in retorts
    • 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
    • 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
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

The pellets are heated together with a solid reducing agent (I), in a retort; and the gaseous reaction prods. (II) flow at least partly in co-current with the charge travelling down the retort. The retort is pref. gastight with a gas outlet towards its lower end, via which gas leaves the retort via an equilibrium or via a suction fan causing a negative gas pressure in the retort. A noncombustible gas may be fed into the top, charging end of the retort to form a gastight seal. A high thermal efficiency is achieved. Agent (I) is pref. hard coal and/or reactive coke; and the moisture in the charge pref. forms steam used to make water gas. The pref. retort is located in a vertical shaft furnace below a charging chamber fitted with shutter valves.
IT6915378A 1978-09-19 1978-09-19 Reducing metal oxide pellets - by feeding them down retort with solid reductant to produce gases flowing in co-current with charge and removing them from base IT1109109B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
IT6915378A IT1109109B (en) 1978-09-19 1978-09-19 Reducing metal oxide pellets - by feeding them down retort with solid reductant to produce gases flowing in co-current with charge and removing them from base
SE7906778A SE7906778L (en) 1978-09-19 1979-08-14 METHOD AND METHOD OF REDUCING METAL OXIDES
ZA00794281A ZA794281B (en) 1978-09-19 1979-08-15 Process for the reduction of metal oxides
AU50340/79A AU5034079A (en) 1978-09-19 1979-08-28 Solid state reduction of metal oxides in retorts
DE19792935466 DE2935466A1 (en) 1978-09-19 1979-09-01 METHOD FOR REDUCING METAL OXIDES AND DEVICE FOR IMPLEMENTING THE METHOD
ES484139A ES484139A1 (en) 1978-09-19 1979-09-13 Reduction of Metal Oxides
GB7932022A GB2034755A (en) 1978-09-19 1979-09-14 Reduction of Metal Oxides
FR7923350A FR2436822A1 (en) 1978-09-19 1979-09-19 PROCESS FOR REDUCING METAL OXIDES OPERATING WITH A SOLID REDUCER IN ROCK OVENS, WITH GAS CIRCULATION OF HORNS WITH PARTIAL OR TOTAL EQUICURENT RELATIVE TO THE FLOW OF THE LOAD, AND INSTALLATION FOR THE IMPLEMENTATION WORK OF THIS PROCESS
DD215644A DD146190A5 (en) 1978-09-19 1979-09-19 METHOD AND DEVICE FOR REDUCING METAL OXIDES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6915378A IT1109109B (en) 1978-09-19 1978-09-19 Reducing metal oxide pellets - by feeding them down retort with solid reductant to produce gases flowing in co-current with charge and removing them from base

Publications (2)

Publication Number Publication Date
IT7869153A0 IT7869153A0 (en) 1978-09-13
IT1109109B true IT1109109B (en) 1985-12-16

Family

ID=11311452

Family Applications (1)

Application Number Title Priority Date Filing Date
IT6915378A IT1109109B (en) 1978-09-19 1978-09-19 Reducing metal oxide pellets - by feeding them down retort with solid reductant to produce gases flowing in co-current with charge and removing them from base

Country Status (9)

Country Link
AU (1) AU5034079A (en)
DD (1) DD146190A5 (en)
DE (1) DE2935466A1 (en)
ES (1) ES484139A1 (en)
FR (1) FR2436822A1 (en)
GB (1) GB2034755A (en)
IT (1) IT1109109B (en)
SE (1) SE7906778L (en)
ZA (1) ZA794281B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT367798B (en) * 1980-08-08 1982-07-26 Voest Alpine Ag METHOD FOR DIRECTLY REDUCING IRON CARRIERS AND DEVICE FOR IMPLEMENTING THE METHOD
AT366718B (en) * 1980-08-08 1982-05-10 Voest Alpine Ag METHOD FOR DEZINCIFYING OXYDIC IRON CLEAR AND APPARATUS FOR CARRYING OUT THIS METHOD
MX162727A (en) * 1984-03-15 1991-06-20 Hylsa Sa IMPROVED METHOD AND APPARATUS FOR PRODUCING IRON WITH A SPONGE-LIKE STRUCTURE FROM IRON OXIDE PARTICLES
CN115029494B (en) * 2022-06-21 2023-12-12 首钢集团有限公司 Reaction tank, hydrogen reduction system and hydrogen reduction method

Also Published As

Publication number Publication date
DE2935466A1 (en) 1980-04-24
ZA794281B (en) 1980-10-29
DD146190A5 (en) 1981-01-28
GB2034755A (en) 1980-06-11
ES484139A1 (en) 1980-10-01
FR2436822A1 (en) 1980-04-18
AU5034079A (en) 1980-03-27
IT7869153A0 (en) 1978-09-13
FR2436822B3 (en) 1981-06-26
SE7906778L (en) 1980-03-20

Similar Documents

Publication Publication Date Title
CN1075560C (en) Production of direct reduced iron with reduced fuel consumption and emission of carbon monoxide
IT1109109B (en) Reducing metal oxide pellets - by feeding them down retort with solid reductant to produce gases flowing in co-current with charge and removing them from base
JPS5675508A (en) Heating or heat reducing method of converter charge raw material utilizing converter exhaust gas
JPS57185908A (en) Equalizing method for top pressure of blast furnace
CA1206751A (en) Process of afterburning combustible constituents of exhaust gases from rotary kilns
RU2540647C1 (en) Cogeneration power plant with fuel cell based on intracyclic conversion of organic raw material
US2092794A (en) Recovery of sulphur
CN206986223U (en) Pneumatic steelmaking dry dust removal and full waste heat stable electric generation system
JPS5316101A (en) Boiler plant by using blast furnace gas
CN104266479B (en) Coal gasification and heat treatment all-in-one oven
JPS5679188A (en) Utilization of gaseous by-product and device therefor
SU597907A1 (en) Ore electric furnace
JPS57200508A (en) Heat preserving structure of iron skin of hot blast furnace for shaft furnace
JPS6039130A (en) Method for recovering latent heat of waste sintering gas
JPS6445925A (en) Energy recovering method for blast furnace gas
SU1270524A1 (en) Device for producing silicon carbide
JPS5679187A (en) Gas reforming
JPS5461205A (en) Coke oven for briquette
FR2307584A1 (en) Cyclone for sepg. dust from hot furnace gases - with two walls forming air-preheating and gas-cooling space between them
JPS54129005A (en) Method and device for coal gasification
ES8608147A1 (en) Drying and pre-heating chamber for mono-stratum oven for ceramics
Dwelly Improved Combustion Control in Hot Blast Stoves.(Retroactive Coverage)
JPS5558309A (en) Operating method of hot stove for blast furnace
JPS55131109A (en) Recovery method of blow-off energy of blast furnace blower
Altneder The Primary and Secondary Utilization of the Heat of Cupola Furnace Top Gases