GB287356A - Improvements in or relating to mechanical ore roasting furnaces - Google Patents

Improvements in or relating to mechanical ore roasting furnaces

Info

Publication number
GB287356A
GB287356A GB1478427A GB1478427A GB287356A GB 287356 A GB287356 A GB 287356A GB 1478427 A GB1478427 A GB 1478427A GB 1478427 A GB1478427 A GB 1478427A GB 287356 A GB287356 A GB 287356A
Authority
GB
United Kingdom
Prior art keywords
furnace
hearths
ore
passage
central
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
GB1478427A
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
Priority to GB1478427A priority Critical patent/GB287356A/en
Publication of GB287356A publication Critical patent/GB287356A/en
Expired 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
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F27B9/24—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace being carried by a conveyor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Tunnel Furnaces (AREA)

Abstract

287,356. Harris, J. June 2, 1927. Charges, agitating ani conveying.-In a superposed hearth ore-roasting furnace, means are provided for preventing or reducing the formation of dust by screening the ore from the furnace draught during its passage from one hearth to another and by providing, in the case of a cylindrical furnace. separate flues for the ascending air or gases. As shown in Fig. 1, the furnace comprises superposed hearths 11 - - 14 provided with rabbles 16, 17, secured to a central shaft 15, and formed alternately with central and peripheral openings for the downward passage of the ore. These openings are fitted with downwardly extending fixed conduits 21 closed at the lower end by rotary plates 22 each carrying a second conduit 23 which, when it registers with the conduit 21 forms a. continuous channel for the passage of ore from one hearth to the one below. In connection with the hearths having central openings, the plate 22, Fig. 5, is formed as a disc secured to the shaft 15, while in the case of those hearths having peripheral openings, the plate 22 is in the form of a curved strip carried on the end of the rabble arm 16, Fig. 9. When the furnace is of rectangular cross-section, the upward passage of the air or gases is effected through the usual corner flues disposed out of the path of the rabble arms, but in the case of cylindrical furnaces, special gas passages are provided, each comprising, as shown in Fig. 3, a metal flue having a central part 25 built into the furnace wall 10 and enlarged upper and lower portions 27, 26 replacing part of and having an outlet below the respective hearths 13, 14. These flues are formed with radial partitions 28, Fig. 2, and are arranged on opposite sides of adjacent hearths to cause the gases to take a zig-zag course through the furnace to the outlet 20.
GB1478427A 1927-06-02 1927-06-02 Improvements in or relating to mechanical ore roasting furnaces Expired GB287356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1478427A GB287356A (en) 1927-06-02 1927-06-02 Improvements in or relating to mechanical ore roasting furnaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1478427A GB287356A (en) 1927-06-02 1927-06-02 Improvements in or relating to mechanical ore roasting furnaces

Publications (1)

Publication Number Publication Date
GB287356A true GB287356A (en) 1928-03-22

Family

ID=10047425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1478427A Expired GB287356A (en) 1927-06-02 1927-06-02 Improvements in or relating to mechanical ore roasting furnaces

Country Status (1)

Country Link
GB (1) GB287356A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5470859A (en) * 1989-08-05 1995-11-28 Beecham Group P.L.C. Azabicyclic compounds with muscarinic activity useful for treating dementia

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5470859A (en) * 1989-08-05 1995-11-28 Beecham Group P.L.C. Azabicyclic compounds with muscarinic activity useful for treating dementia

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