ES412051A1 - Minimum scale reheating furnace and means relating thereto - Google Patents

Minimum scale reheating furnace and means relating thereto

Info

Publication number
ES412051A1
ES412051A1 ES412051A ES412051A ES412051A1 ES 412051 A1 ES412051 A1 ES 412051A1 ES 412051 A ES412051 A ES 412051A ES 412051 A ES412051 A ES 412051A ES 412051 A1 ES412051 A1 ES 412051A1
Authority
ES
Spain
Prior art keywords
work
burners
gases
air
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
ES412051A
Other languages
Spanish (es)
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.)
Midland Ross Corp
Original Assignee
Midland Ross Corp
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 Midland Ross Corp filed Critical Midland Ross Corp
Publication of ES412051A1 publication Critical patent/ES412051A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0037—Rotary furnaces with vertical axis; Furnaces with rotating floor
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Tunnel Furnaces (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Furnace Details (AREA)

Abstract

A ferrous work reheating furnace wherein high fuel efficiency is achieved with minimum scale formation. The work is initially heated in an atmosphere which is slightly oxidizing, the work being in a temperature range where scale formation does not readily occur. The work is then placed in a slightly reducing atmosphere after it reaches a predetermined elevated temperature. A unique arrangement is provided wherein a continuous reheating process takes place utilizing a protective atmosphere generated by hot air burners during the high temperature phase. These burners have a low air to fuel ratio and the gases are caused to flow toward the location where the work is introduced. The combustibles within the gases are combusted through the introduction of air into the portion of the furnace nearest the charge end. Additional efficiency is gained by using the spent gases to preheat combustion air for the burners.
ES412051A 1972-03-17 1973-02-24 Minimum scale reheating furnace and means relating thereto Expired ES412051A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00235610A US3819323A (en) 1972-03-17 1972-03-17 Minimum scale reheating furnace and means relating thereto

Publications (1)

Publication Number Publication Date
ES412051A1 true ES412051A1 (en) 1976-01-01

Family

ID=22886230

Family Applications (1)

Application Number Title Priority Date Filing Date
ES412051A Expired ES412051A1 (en) 1972-03-17 1973-02-24 Minimum scale reheating furnace and means relating thereto

Country Status (10)

Country Link
US (1) US3819323A (en)
JP (1) JPS5147404B2 (en)
AU (1) AU5255673A (en)
BR (1) BR7301761D0 (en)
CA (1) CA989610A (en)
DE (1) DE2312176A1 (en)
ES (1) ES412051A1 (en)
FR (1) FR2176746B1 (en)
GB (1) GB1386555A (en)
IT (1) IT981045B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145056A (en) * 1976-04-07 1992-09-08 Smith Thomas M Air bag tensioning device
SE423141B (en) * 1977-11-30 1982-04-13 Bruun & Soerensen DEVICE IN THE BURNER OF CREMATORIES
DE3231225A1 (en) * 1982-08-21 1984-03-01 Verwaltungsgesellschaft Heinrich Neitz GmbH & Co KG, 4930 Detmold Heat treatment oven and performance of thermal processes for workpieces of ferrous materials and non-ferrous metals
US4763880A (en) * 1987-04-03 1988-08-16 Holcroft/Loftus Inc. Rotary hearth multi-chamber, multi-purpose furnace system
US4924785A (en) * 1988-12-05 1990-05-15 Surface Combustion, Inc. Thermal cleaning system
US5078368A (en) * 1990-05-07 1992-01-07 Indugas, Inc. Gas fired melting furnace
US5207972A (en) * 1990-05-07 1993-05-04 Indugas, Inc. High temperature furnace
US5297959A (en) * 1990-05-07 1994-03-29 Indugas, Inc. High temperature furnace
US5240404A (en) * 1992-02-03 1993-08-31 Southern California Gas Company Ultra low NOx industrial burner
WO2009059356A1 (en) * 2007-11-05 2009-05-14 Ansac Pty Ltd Kiln
CN104792153B (en) * 2014-01-20 2017-12-01 宜宾恒旭窑炉科技开发有限公司 A kind of gas collection system of rotary kiln
JP6185435B2 (en) * 2014-07-16 2017-08-23 株式会社神戸製鋼所 Rotary hearth furnace
CN112135864B (en) * 2018-05-16 2023-06-30 株式会社日本触媒 Method for producing water-absorbent resin particles

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1843336A (en) * 1930-03-18 1932-02-02 Kalif Corp Nonoxidizing heating furnace
US2293549A (en) * 1939-05-20 1942-08-18 Sam F Keener Method and apparatus for heating billets
US2296791A (en) * 1941-06-07 1942-09-22 Sam F Keener Rotary furnace
US2334050A (en) * 1942-08-04 1943-11-09 Thomas A Waltz Rotary furnace
US2369529A (en) * 1942-12-22 1945-02-13 Salem Engineering Company Rotary furnace drive
US2417063A (en) * 1943-08-05 1947-03-11 Cold Metal Products Company Rotating annular hearth annealing furnace
US2507274A (en) * 1947-01-23 1950-05-09 Cold Metal Products Company Furnace
US3063878A (en) * 1958-05-07 1962-11-13 Wilson Lee Method of and apparatus for annealing
FR1218675A (en) * 1958-12-30 1960-05-12 Salem Brosius S A Holding Rotary deck ovens
FR1313179A (en) * 1961-11-13 1962-12-28 Stein & Roubaix Improvements in heating metals at high temperature
US3386717A (en) * 1965-04-01 1968-06-04 Kaiser Aluminium Chem Corp Process and apparatus for heat treating aluminum ingots
AT289875B (en) * 1965-07-26 1971-05-10 Biprohut Furnace for direct heating of the material to be heated without any scale
US3544093A (en) * 1968-11-05 1970-12-01 Wyandotte Chemicals Corp Calcining limestone
US3544090A (en) * 1968-11-08 1970-12-01 Martinus F Peeters Kiln for making cement clinker

Also Published As

Publication number Publication date
JPS4911711A (en) 1974-02-01
IT981045B (en) 1974-10-10
BR7301761D0 (en) 1974-06-27
FR2176746B1 (en) 1976-09-10
FR2176746A1 (en) 1973-11-02
DE2312176A1 (en) 1973-09-20
AU5255673A (en) 1974-08-29
JPS5147404B2 (en) 1976-12-15
CA989610A (en) 1976-05-25
GB1386555A (en) 1975-03-05
US3819323A (en) 1974-06-25

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