US3817697A - Rotary kiln for metal chip deoiling - Google Patents

Rotary kiln for metal chip deoiling Download PDF

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Publication number
US3817697A
US3817697A US31574172A US3817697A US 3817697 A US3817697 A US 3817697A US 31574172 A US31574172 A US 31574172A US 3817697 A US3817697 A US 3817697A
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US
United States
Prior art keywords
housing
scrap metal
furnace
burner
chips
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 - Lifetime
Application number
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English (en)
Inventor
E Parobek
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.)
Combustion Engineering Inc
Original Assignee
Combustion Engineering Inc
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 Combustion Engineering Inc filed Critical Combustion Engineering Inc
Priority to US31574172 priority Critical patent/US3817697A/en
Priority to CA184,375A priority patent/CA997966A/en
Priority to GB5786873A priority patent/GB1431503A/en
Priority to ES1973198736U priority patent/ES198736Y/es
Priority to FR7344786A priority patent/FR2211114A5/fr
Priority to IT3214173A priority patent/IT1006132B/it
Application granted granted Critical
Publication of US3817697A publication Critical patent/US3817697A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/10—Rotary-drum furnaces, i.e. horizontal or slightly inclined internally heated, e.g. by means of passages in the wall
    • 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
    • C22B1/005—Preliminary treatment of scrap
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/18—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a stack
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S266/00—Metallurgical apparatus
    • Y10S266/901—Scrap metal preheating or melting

Definitions

  • Patent 11 1 1111 3,817,697 Parobek June 18, 1974 ROTARY KILN FOR METAL CHIP 2,836,901 6/1958 Davis 432/72 DEQILING 2,850,273 9/1958 Barnes 432/117 X 3,497,190 2/1970 Moore 432/72 Inventor: Edward George Parobek, Seven 3,606,285 9/1971 Bayer 432/117 Hills, Ohio [73] Assignee: Combustion Engineering, Inc., Primary camby Windsor, Conn Attorney, Agent, or Fzrm-Robert L. Olson [22] Filed: Dec.
  • a rotary kiln is provided for removing oil and water coatings from metal chips in an efficient manner without the hazard of furnace explosion or oxidation of the metal chips being treated.
  • the rotary kiln of the invention utilizes a burner having outlets extending throughout the length of the housing.
  • the rotating housing has internal longitudinal ribs or vanes for causing the metal chips to cascade or tumble within the housing, thus providing good exposure of all surfaces of the chips to the drying medium.
  • the airfuel ratio of the burner is adjusted so no excess air is introduced into the furnace such that the chips are pyrolized in a reducing atmosphere.
  • the water and oil is vaporized, and carried off with the combustion exhaust gases.
  • FIG. 1 is a cross sectional side view of a metal chip deoiler furnace or kiln constructed in accordance to the invention.
  • FIG. 2 is a sectional view taken on lines 22 of FIG. 1.
  • FIG. 1 numeral denotes the rotary kiln or furnace in its entirety.
  • the kiln consists of a substantially horizontal cylindrical housing 11.
  • the housing 1 l is tilted slightly downwardly from its inlet end to the discharge end, so that as it rotates the metal chips 12 are progressively moved through the housing.
  • Metal chips or scrap 12 coated with water and oil, is introduced to the furnace 11 from hopper 14 by means of a screw feeder 16.
  • a rotary air lock 15 located in the bottom of the hooper 14 prevents undesirable air from entering the furnace along with the metal chips, so that the furnace can be maintained in an inert or reducing atmosphere.
  • Housing 11 is mounted on trunnion rolls 18, which rolls are driven by motor to cause rotation of the housing 1 I.
  • Bellows 22 forms a seal between the rotating housing 11 and the stationary structure 21, while permitting thermal growth of the housing when it is fired.
  • a spring biased annular seal 24 prevents entrance of air at the discharge end of the housing 1 l.
  • the chips, after having the water and oil evaporated therefrom in furnace 11, are discharged through opening 26.
  • Rotary air lock 28 prevents entrance of air to the furnace through the discharge opening.
  • Heat is provided in the furnace 11 by means of tubular burner 30, which contains openings 32 along its entire length for directing flame at the metal chips throughout the length of the furnace.
  • Burner 30 is supplied with gaseous fuel and air through supply lines 34 and 36, respectively. The ratio of fuel to air is maintained such that no excess air enters the furnace 11 through the burner 30. Thus no oxygen will be present in the furnace to support combustion of the oil coating the metal chips.
  • the oil and water is volatilized or vaporized, and carried out of the furnace along with the combustion exhaust gases through duct 42.
  • valves 38 and 40 The amount of fuel and air supplied to burner 30 is controlled by valves 38 and 40, respectively. These valves are automatically adjusted by a signal from tem perature sensing device 44 located in the furnace. A temperature of approximately 800F to 1000F is maintained in the furnace, so that all of the water and oil is vaporized, without causing overheating damage to the metal chips.
  • the volatized combustibles coming from the evaporated oil is combusted by an afterburner 46, located in duct 42. This burner is supplied with an excess of air, to insure combustion of all of the vaporized oil carried by the furnace exhaust gases.
  • housing 11 has a plurality of longitudinal ribs or vanes 48 attached to its inner wall surface. These ribs 48 extend the entire length of the furnace, and provide a tumbling action for the metal chips as the housing rotates. Thus the flame 50 impinges directly on the shower of cascading metal chips, insuring that all of the surfaces of all chips are exposed to the drying effect of the flame 50. As shown in FIG. 2, the burner openings 32 are located off center to the vertical, to effectively direct the flame 50 at the greatest accumulation of cascading or tumbling chips.
  • the furnace atmosphere is inert, there is no possibility of explosion.
  • Af terbumer 46 combusts the vaporized combustibles carried by the exhaust gases leaving the furnace.
  • the duct 42 can also contain a wet scrubber for removing pollutants from the exhaust gases prior to their being discharged to the atmosphere.
  • a furnace for removing oil and water from scrap metal including a substantially horizontally cylindrical housing, said housing having an inlet end and a discharge end, means for rotating the housing, said housing being angled slightly downwardly from the inlet end to the discharge end, means for introducing scrap metal to the housing at the inlet end, means for removing scrap metal from the housing at the discharge end, exhaust duct means through which the gases escape from the housing, afterburner means located in the duct means for combusting the combustible volatiles driven off from the scrap metal, a plurality of longitudinal vanes secured to the walls of the housing for causing tumbling of the scrap metal as the housing rotates, burner means positioned within the housing having outlets positioned longitudinally along the entire length of 3 4 the housing, the outlets of the burner means being positrolling the supply of fuel and air to the burner means tioned at an angle to the vertical, and are offset from in such a ratio that no excess air is supplied to the hous the central axis of the housing, such that the flames ising

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
US31574172 1972-12-15 1972-12-15 Rotary kiln for metal chip deoiling Expired - Lifetime US3817697A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US31574172 US3817697A (en) 1972-12-15 1972-12-15 Rotary kiln for metal chip deoiling
CA184,375A CA997966A (en) 1972-12-15 1973-10-26 Rotary kiln for metal chip deoiling
GB5786873A GB1431503A (en) 1972-12-15 1973-12-13 Rotary furnace for metal chip deoiling
ES1973198736U ES198736Y (es) 1972-12-15 1973-12-13 Horno rotatorio para el desengrase de virutas metalicas.
FR7344786A FR2211114A5 (es) 1972-12-15 1973-12-14
IT3214173A IT1006132B (it) 1972-12-15 1973-12-27 Forno rotante per asportare l olio da truciolimetallici

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31574172 US3817697A (en) 1972-12-15 1972-12-15 Rotary kiln for metal chip deoiling

Publications (1)

Publication Number Publication Date
US3817697A true US3817697A (en) 1974-06-18

Family

ID=23225847

Family Applications (1)

Application Number Title Priority Date Filing Date
US31574172 Expired - Lifetime US3817697A (en) 1972-12-15 1972-12-15 Rotary kiln for metal chip deoiling

Country Status (6)

Country Link
US (1) US3817697A (es)
CA (1) CA997966A (es)
ES (1) ES198736Y (es)
FR (1) FR2211114A5 (es)
GB (1) GB1431503A (es)
IT (1) IT1006132B (es)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133635A (en) * 1977-02-07 1979-01-09 Combustion Engineering, Inc. Method and apparatus for drying and preheating small metallic particles
DE3014686A1 (de) * 1979-04-16 1980-11-06 Automated Prod Syst Verfahren zur dekontaminierung von kontaminiertem metallschrott
US4264060A (en) * 1977-02-25 1981-04-28 Automated Production Systems Corporation Apparatus for treating metallic scrap in the recovery of metal therefrom
EP0070819A1 (en) * 1981-07-22 1983-01-26 Boliden Aktiebolag A method for working-up metal-containing waste products
US4462793A (en) * 1981-08-03 1984-07-31 Kawasaki Jukogyo Kabushiki Kaisha Rotary kiln and method of using such a kiln
US4504149A (en) * 1978-01-23 1985-03-12 Mendenhall Robert Lamar Closed end drum asphaltic concrete recycle apparatus and method
US4522498A (en) * 1978-01-23 1985-06-11 Mendenhall Robert Lamar Asphaltic concrete recycle apparatus and method
US4639216A (en) * 1985-04-25 1987-01-27 Schnupp's Grain Roasting, Inc. Grain roasting machine and method
US4683664A (en) * 1983-03-23 1987-08-04 Giovanni Codenotti Apparatus for drying metal turnings or scrap
US5226774A (en) * 1991-01-28 1993-07-13 Cadence Chemical Resources, Inc. Device for charging combustible solids to rotary kilns
US5295821A (en) * 1992-07-06 1994-03-22 Daukss Karlis N Foundry sand thermal reclamation system and method
US5619936A (en) * 1993-05-28 1997-04-15 Kleen Soil Technologies, L.C. Thermal desorption unit and processes
WO2006119861A1 (de) 2005-05-06 2006-11-16 Bayer Industry Services Gmbh & Co. Ohg Verfahren zur rückgewinnung von metallen aus abfällen und anderen materialien mit organischen bestandteilen
US7181864B1 (en) * 2006-03-31 2007-02-27 Honda Motor Co., Ltd. Dehydration of body hem flanges
US8960108B1 (en) 2010-12-20 2015-02-24 SilverStreet Group, LLC System and method for cogeneration from mixed oil and inert solids, furnace and fuel nozzle for the same
US10668408B2 (en) 2012-11-30 2020-06-02 Suncor Energy Inc Measurement and control of bitumen-containing process streams
EP4722416A1 (en) 2024-10-01 2026-04-08 Marcin Buszko System and method for removing fats, greases and petroleum substances from metal components

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD206421A1 (de) * 1982-10-01 1984-01-25 Mansfeld Kombinat W Pieck Veb Vorrichtung zur trocknung und entoelung von metallspaenen
FR2719796B1 (fr) * 1994-05-11 1996-07-05 Ecaa Procédé de production d'aciers en poudre à partir de boues d'usinage mécanique, et dispositif pour la mise en Óoeuvre dudit procédé.
JPH09170091A (ja) * 1995-12-19 1997-06-30 Kanto Yakin Kogyo Kk 金属加工品の油分の蒸発除去方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1797130A (en) * 1929-01-18 1931-03-17 Coley Henry Edwin Reduction of ores, oxides, and the like
US2836901A (en) * 1954-05-26 1958-06-03 Link Belt Co Method for drying metal scrap
US2850273A (en) * 1955-09-13 1958-09-02 Duane Carr Rotary kiln type metallurgical furnace
US3497190A (en) * 1968-04-15 1970-02-24 James E Moore System for hot de-oiling and hot briquetting
US3606285A (en) * 1969-10-20 1971-09-20 Holcroft & Co Barrel-type batch gas carburizing furnace

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1797130A (en) * 1929-01-18 1931-03-17 Coley Henry Edwin Reduction of ores, oxides, and the like
US2836901A (en) * 1954-05-26 1958-06-03 Link Belt Co Method for drying metal scrap
US2850273A (en) * 1955-09-13 1958-09-02 Duane Carr Rotary kiln type metallurgical furnace
US3497190A (en) * 1968-04-15 1970-02-24 James E Moore System for hot de-oiling and hot briquetting
US3606285A (en) * 1969-10-20 1971-09-20 Holcroft & Co Barrel-type batch gas carburizing furnace

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4133635A (en) * 1977-02-07 1979-01-09 Combustion Engineering, Inc. Method and apparatus for drying and preheating small metallic particles
US4264060A (en) * 1977-02-25 1981-04-28 Automated Production Systems Corporation Apparatus for treating metallic scrap in the recovery of metal therefrom
US4504149A (en) * 1978-01-23 1985-03-12 Mendenhall Robert Lamar Closed end drum asphaltic concrete recycle apparatus and method
US4522498A (en) * 1978-01-23 1985-06-11 Mendenhall Robert Lamar Asphaltic concrete recycle apparatus and method
DE3014686A1 (de) * 1979-04-16 1980-11-06 Automated Prod Syst Verfahren zur dekontaminierung von kontaminiertem metallschrott
EP0070819A1 (en) * 1981-07-22 1983-01-26 Boliden Aktiebolag A method for working-up metal-containing waste products
US4462793A (en) * 1981-08-03 1984-07-31 Kawasaki Jukogyo Kabushiki Kaisha Rotary kiln and method of using such a kiln
US4683664A (en) * 1983-03-23 1987-08-04 Giovanni Codenotti Apparatus for drying metal turnings or scrap
US4639216A (en) * 1985-04-25 1987-01-27 Schnupp's Grain Roasting, Inc. Grain roasting machine and method
US5226774A (en) * 1991-01-28 1993-07-13 Cadence Chemical Resources, Inc. Device for charging combustible solids to rotary kilns
US5295821A (en) * 1992-07-06 1994-03-22 Daukss Karlis N Foundry sand thermal reclamation system and method
US5619936A (en) * 1993-05-28 1997-04-15 Kleen Soil Technologies, L.C. Thermal desorption unit and processes
WO2006119861A1 (de) 2005-05-06 2006-11-16 Bayer Industry Services Gmbh & Co. Ohg Verfahren zur rückgewinnung von metallen aus abfällen und anderen materialien mit organischen bestandteilen
US20090129996A1 (en) * 2005-05-06 2009-05-21 Bayer Industry Services Gmbh & Co. Ohg Method For Recovering Metals From Waste and Other Materials Comprising Organic Components
US7976611B2 (en) 2005-05-06 2011-07-12 Currenta Gmbh & Co. Ohg Continuous process and apparatus for recovering metal from metal and organic waste, by combustion of organic constituent of waste in rotary tube furnace
US7181864B1 (en) * 2006-03-31 2007-02-27 Honda Motor Co., Ltd. Dehydration of body hem flanges
US8960108B1 (en) 2010-12-20 2015-02-24 SilverStreet Group, LLC System and method for cogeneration from mixed oil and inert solids, furnace and fuel nozzle for the same
US10132496B1 (en) 2010-12-20 2018-11-20 Silver Street Group, LLC System and method for cogeneration from mixed oil and inert solids, furnace and fuel nozzle for the same
US10668408B2 (en) 2012-11-30 2020-06-02 Suncor Energy Inc Measurement and control of bitumen-containing process streams
EP4722416A1 (en) 2024-10-01 2026-04-08 Marcin Buszko System and method for removing fats, greases and petroleum substances from metal components

Also Published As

Publication number Publication date
FR2211114A5 (es) 1974-07-12
ES198736U (es) 1975-06-16
CA997966A (en) 1976-10-05
ES198736Y (es) 1975-11-16
GB1431503A (en) 1976-04-07
IT1006132B (it) 1976-09-30

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