GB343954A - Improvements in processes for producing metal sponge - Google Patents

Improvements in processes for producing metal sponge

Info

Publication number
GB343954A
GB343954A GB35366/29A GB3536629A GB343954A GB 343954 A GB343954 A GB 343954A GB 35366/29 A GB35366/29 A GB 35366/29A GB 3536629 A GB3536629 A GB 3536629A GB 343954 A GB343954 A GB 343954A
Authority
GB
United Kingdom
Prior art keywords
briquettes
furnace
gases
sponge
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
GB35366/29A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB343954A publication Critical patent/GB343954A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B13/00Making spongy iron or liquid steel, by direct processes
    • C21B13/02Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B13/00Making spongy iron or liquid steel, by direct processes
    • C21B13/0046Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B13/00Making spongy iron or liquid steel, by direct processes
    • C21B13/006Starting from ores containing non ferrous metallic oxides
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B13/00Making spongy iron or liquid steel, by direct processes
    • C21B13/08Making spongy iron or liquid steel, by direct processes in rotary furnaces
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B13/00Making spongy iron or liquid steel, by direct processes
    • C21B13/14Multi-stage processes processes carried out in different vessels or furnaces
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2100/00Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60Process control or energy utilisation in the manufacture of iron or steel
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B2100/00Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/66Heat exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

343,954. Metal sponge. GUSTAFSSON, E. G. T., 95, Birger Jarlsgatan, Stockholm. Nov. 19, 1929, No. 35366. Convention date, Nov. 28, 1928. [Classes 72 and 82 (i).] In a process for producing metal sponge, e.g. iron, cobalt, chromium nickel or chrome iron sponge without fusing the ore or metal, finely divided ore and carbonaceous reducing agent and/or thermic reducing agent in excess of the amount required for the complete reduction of the ore are intimately mixed and transformed into briquettes or other form of pieces, and the briquettes &c. are reduced in a shaft or rotary furnace by heat given off by combustion gases of such a character that they burn at least part of the excess of reducing agent in the briquettes. The excess of the reducing agent is applied to the surfaces of the briquettes by powdering or blowing the briquettes with powdered coal or rolling them in the coals before the briquettes are dried. The shaft furnace 12, Fig. 1, is provided with an annular combustion chamber 16 for the fuel burnt in burners 17, Fig. 2, and the gases produced pass through openings 18 into the reducing part 12b of the furnace. The gases produced pass upward through the furnace charge and with the addition of air supplied through the openings 19, 20 from pipes 21, 22 are converted into oxidizing gases which preheat the charge in the part 12a of the furnace. The sponge passes into the cooling zone 12c, the cooling being effected by a double.walled hopper 30 in the interspaces of which air or water is circulated. The cooled sponge is discharged by screws 32, 33. In the rotary furnace, Fig. 3, the briquettes are fed into the preheating part 12a where the combustion gases are burnt with air from the ports 19, 20 and pass into the reduction part 12b where they are acted upon by gases produced by the combustion of gases from an electric furnace 53 in a burner 17 with air supplied by a pipe 58. The partly-reduced charge passes by an opening 51 into a shaft 52 and thence into the furnace 53 where the reduction is completed, an ore carbon charge being introduced through the hopper 14a to increase the production of reducing gases. Thermic reducing agents such as ferro-silicon, ferro-aluminium, .ferro-aluminiumsilicon or aluminium may replace, wholly or partly, the carbonaceous material.
GB35366/29A 1928-11-28 1929-11-19 Improvements in processes for producing metal sponge Expired GB343954A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE343954X 1928-11-28

Publications (1)

Publication Number Publication Date
GB343954A true GB343954A (en) 1931-02-19

Family

ID=20308448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35366/29A Expired GB343954A (en) 1928-11-28 1929-11-19 Improvements in processes for producing metal sponge

Country Status (1)

Country Link
GB (1) GB343954A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409315A1 (en) * 1977-09-20 1979-06-15 Kinglor Metor Spa PROCESS FOR OBTAINING BRIQUETTES INTENDED FOR VERTICAL REDUCTION OVENS AND BRIQUETTES THUS OBTAINED
DE3041359A1 (en) * 1980-11-03 1982-05-13 Anatolij Alekseevič Penza Černyj Cupola furnace has sized burner ducts - which correspond in dimensions at outlet to ratio of the cupola shaft dia.
CN104789775A (en) * 2015-04-10 2015-07-22 东北大学 Preparation method and use method of aluminum-containing magnesium-smelting reducing agent

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2409315A1 (en) * 1977-09-20 1979-06-15 Kinglor Metor Spa PROCESS FOR OBTAINING BRIQUETTES INTENDED FOR VERTICAL REDUCTION OVENS AND BRIQUETTES THUS OBTAINED
DE3041359A1 (en) * 1980-11-03 1982-05-13 Anatolij Alekseevič Penza Černyj Cupola furnace has sized burner ducts - which correspond in dimensions at outlet to ratio of the cupola shaft dia.
CN104789775A (en) * 2015-04-10 2015-07-22 东北大学 Preparation method and use method of aluminum-containing magnesium-smelting reducing agent

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