GB975676A - Improvements in or relating to the treatment of haematite iron ore for use in the production of iron - Google Patents

Improvements in or relating to the treatment of haematite iron ore for use in the production of iron

Info

Publication number
GB975676A
GB975676A GB3183461A GB3183461A GB975676A GB 975676 A GB975676 A GB 975676A GB 3183461 A GB3183461 A GB 3183461A GB 3183461 A GB3183461 A GB 3183461A GB 975676 A GB975676 A GB 975676A
Authority
GB
United Kingdom
Prior art keywords
haematite
iron
briquettes
briquette
ore
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
GB3183461A
Inventor
Henry Leslie O'connor
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.)
Indian Iron and Steel Co Ltd
Original Assignee
Indian Iron and Steel Co Ltd
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 Indian Iron and Steel Co Ltd filed Critical Indian Iron and Steel Co Ltd
Priority to GB3183461A priority Critical patent/GB975676A/en
Priority to US400247A priority patent/US3214263A/en
Publication of GB975676A publication Critical patent/GB975676A/en
Expired legal-status Critical Current

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
    • C21B13/008—Use of special additives or fluxing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/008—Composition or distribution of the charge
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
    • 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
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • 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
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/243—Binding; Briquetting ; Granulating with binders inorganic

Landscapes

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

Abstract

Prior to smelting, finely divided haematite iron ore is mixed with a bonding medium and then pressed into porous briquettes which withstand the pressures of the smelting furnace, whilst permitting easy access to reducing gases. The preferred bonding agent includes a finely divided calcium compound which forms calcium ferrites with the iron ore. The ferrites provide additional bonding for the briquettes which dissociate at high temperatures and enable exothermic reduction of ferric oxide to take place. A specified briquette mix before pressing contains foamed slag, slaked lime, silica sand, haematite and water.ALSO:The invention provides a briquette for charging into a blast furnace in the production of iron, comprising finely ground haematite ore fines and a hard, porous cement matrix distributed evenly throughout the fines and intimately associated therewith, said matrix being composed of hydrated lime, and a foamed blast furnace slag/hydrated lime cementitious product. The free lime content reacts with the ferric oxide of the ore fines in the initial heating period to form calcium ferrites of the typa XCaO.Fe2O3 which preserve the briquette against disintegration until a high temperature in the furnace is reached under which condition there exists the optimum reducing system. Silica sand may be added to the mix from which briquettes are made.
GB3183461A 1961-09-05 1961-09-05 Improvements in or relating to the treatment of haematite iron ore for use in the production of iron Expired GB975676A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3183461A GB975676A (en) 1961-09-05 1961-09-05 Improvements in or relating to the treatment of haematite iron ore for use in the production of iron
US400247A US3214263A (en) 1961-09-05 1964-09-29 Treatment of haematite iron ore for use in the production of iron

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3183461A GB975676A (en) 1961-09-05 1961-09-05 Improvements in or relating to the treatment of haematite iron ore for use in the production of iron

Publications (1)

Publication Number Publication Date
GB975676A true GB975676A (en) 1964-11-18

Family

ID=10329098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3183461A Expired GB975676A (en) 1961-09-05 1961-09-05 Improvements in or relating to the treatment of haematite iron ore for use in the production of iron

Country Status (1)

Country Link
GB (1) GB975676A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2446321A1 (en) * 1979-01-10 1980-08-08 Univ Michigan Tech PROCESS FOR PRODUCING METALLIC IRON BALLS
GB2265075A (en) * 1992-03-18 1993-09-22 Lee Chih Chiang Insect protective hood
CN112867804A (en) * 2018-08-16 2021-05-28 宾汀解决有限公司 Binder formulation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2446321A1 (en) * 1979-01-10 1980-08-08 Univ Michigan Tech PROCESS FOR PRODUCING METALLIC IRON BALLS
GB2265075A (en) * 1992-03-18 1993-09-22 Lee Chih Chiang Insect protective hood
CN112867804A (en) * 2018-08-16 2021-05-28 宾汀解决有限公司 Binder formulation

Similar Documents

Publication Publication Date Title
ES433142A1 (en) Process for reducing iron oxide to metallic sponge iron with liquid or solid fuels
GB975676A (en) Improvements in or relating to the treatment of haematite iron ore for use in the production of iron
GB1305581A (en)
US2147780A (en) Production of hydrogen
US2205043A (en) Iron oxide briquette
GB1282750A (en) A method for agglomerating ore concentrate
US3214263A (en) Treatment of haematite iron ore for use in the production of iron
GB517867A (en) Improvements on treatment of iron ores preliminary to smelting
GB1034544A (en) Basic refractory product and process of manufacturing the same
US2487497A (en) Process of purifying magnesia
GB1367496A (en) Method of manufacturing and treating iron ore concentrate agglomerate s
GB1017219A (en) Improvements relating to blast furnaces
ES440031A1 (en) Method of reducing iron ore
US3052534A (en) Method for producing high-temperature cement in the blast furnace
NO130595B (en)
US1236447A (en) Composition of matter for adapting carbon residues from the distillation of petroleum for use in smelting-furnaces.
GB960982A (en) A method of operating furnaces for the production of steel, and the formation of pellets for use in such method
ES298884A1 (en) Improvements introduced in the manufacture of refractory bricks (Machine-translation by Google Translate, not legally binding)
SU137126A1 (en) Method for producing carbon-free ferrochrome
GB999352A (en) Use of raw petroleum coke in blast furnaces
ES282291A1 (en) A procedure for the manufacture of basic bricks and refractory masses (Machine-translation by Google Translate, not legally binding)
GB985508A (en) Improvements in or relating to process for the production of hydraulic cement
GB1269841A (en) Method of and apparatus for reducing iron oxide to metallic iron
ES286696A1 (en) A procedure for the manufacture of steel (Machine-translation by Google Translate, not legally binding)
ES326685A1 (en) A procedure for the manufacture of refractory bricks. (Machine-translation by Google Translate, not legally binding)