GB863001A - A process for intensifying the roasting of ores in superposed hearth furnaces by recycling the combustion gases - Google Patents

A process for intensifying the roasting of ores in superposed hearth furnaces by recycling the combustion gases

Info

Publication number
GB863001A
GB863001A GB1341357A GB1341357A GB863001A GB 863001 A GB863001 A GB 863001A GB 1341357 A GB1341357 A GB 1341357A GB 1341357 A GB1341357 A GB 1341357A GB 863001 A GB863001 A GB 863001A
Authority
GB
United Kingdom
Prior art keywords
hearths
roasting
ores
ore
furnace
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
GB1341357A
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.)
ENTPR RENE ET JEAN MORITZ
Original Assignee
ENTPR RENE ET JEAN MORITZ
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 ENTPR RENE ET JEAN MORITZ filed Critical ENTPR RENE ET JEAN MORITZ
Publication of GB863001A publication Critical patent/GB863001A/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
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/02—Working-up flue dust
    • 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)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

<PICT:0863001/III/1> In a superposed hearth furnace for roasting sulphides or arsenic ores throughput is increased and even heating obtained by recirculating a proportion of the effluent gases after passing through a waste heat boiler c, through a pipe e, dust separator f, fan g and pipe h back to several of the lower hearths under control of valves h1, h2, h3. The ore is fed into the furnace by a hopper k, preferably on to the top drying hearth j. Thereafter it traverses the remaining hearths j1-j4 &c. either successively or alternately through part of the furnace. Certain middle hearths may be overfed by part of the dried ore or by ore from the upper hearths.
GB1341357A 1956-04-26 1957-04-26 A process for intensifying the roasting of ores in superposed hearth furnaces by recycling the combustion gases Expired GB863001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR863001X 1956-04-26

Publications (1)

Publication Number Publication Date
GB863001A true GB863001A (en) 1961-03-15

Family

ID=9343058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1341357A Expired GB863001A (en) 1956-04-26 1957-04-26 A process for intensifying the roasting of ores in superposed hearth furnaces by recycling the combustion gases

Country Status (1)

Country Link
GB (1) GB863001A (en)

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