GB725906A - Improved roasting furnace - Google Patents

Improved roasting furnace

Info

Publication number
GB725906A
GB725906A GB24063/53A GB2406353A GB725906A GB 725906 A GB725906 A GB 725906A GB 24063/53 A GB24063/53 A GB 24063/53A GB 2406353 A GB2406353 A GB 2406353A GB 725906 A GB725906 A GB 725906A
Authority
GB
United Kingdom
Prior art keywords
grate
shaft
per cent
bars
pyrites
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
GB24063/53A
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 GB725906A publication Critical patent/GB725906A/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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/08—Shaft or like vertical or substantially vertical furnaces heated otherwise than by solid fuel mixed with charge

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

725,906. Shaft furnaces. DUISBURGER KUPFERHUTTE. Aug. 31, 1953 [Sept. 17 1952], No. 24063/53. Class 51 (2). A shaft furnace for wasting pyrites and other expanding and caking sulphide ores with the aid of oxygen-containing gases, comprises a shaft in which the cross-sectional area for the top threequarters of its length increases by 25 per cent- 50 per cent downwardly and for the bottom quarter of its length increases by 3 per cent-7 per cent, the reaction gases being introduced at the bottom of the shaft through a grate supporting the charge. The shaft may be cylindrical, rectangular or polygonal in shape, and the enlargement may be effected in steps, Figs. 1-3 (not shown). Discharging apparatus may comprise bars or rotary arms sweeping over the grate and pushing wasted ore either outwardly through an annular space formed between the grate and the shaft casing, or through a radial slot in the grate. Figs. 4, 6 (not shown). In the case of a rectangular furnace, the charge material may be discharged through parallel slots 21 formed in the grate 22 by means of bars 20 oscillated over the said grate by a crank 23. The interstices between the grate bars are 1 mm. when treating pyrites of 6-20 mms. grain size.
GB24063/53A 1952-09-17 1953-08-31 Improved roasting furnace Expired GB725906A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE725906X 1952-09-17

Publications (1)

Publication Number Publication Date
GB725906A true GB725906A (en) 1955-03-09

Family

ID=6635081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24063/53A Expired GB725906A (en) 1952-09-17 1953-08-31 Improved roasting furnace

Country Status (1)

Country Link
GB (1) GB725906A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1533837B1 (en) * 1966-04-12 1971-04-15 Fierro Esponja Reduction chamber for the batchwise reduction of metal oxides
US4129289A (en) * 1976-03-26 1978-12-12 Nippon Steel Corporation Shaft furnace with bottom discharge device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1533837B1 (en) * 1966-04-12 1971-04-15 Fierro Esponja Reduction chamber for the batchwise reduction of metal oxides
US4129289A (en) * 1976-03-26 1978-12-12 Nippon Steel Corporation Shaft furnace with bottom discharge device

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