EP0125198B1 - Dispositif d'accélération de particules solides - Google Patents

Dispositif d'accélération de particules solides Download PDF

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Publication number
EP0125198B1
EP0125198B1 EP84630036A EP84630036A EP0125198B1 EP 0125198 B1 EP0125198 B1 EP 0125198B1 EP 84630036 A EP84630036 A EP 84630036A EP 84630036 A EP84630036 A EP 84630036A EP 0125198 B1 EP0125198 B1 EP 0125198B1
Authority
EP
European Patent Office
Prior art keywords
gas
lance
section
conduit
solid particles
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
EP84630036A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0125198A1 (fr
Inventor
François Schleimer
Clement Burton
André Bock
Jean Peckels
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.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
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 Arbed SA filed Critical Arbed SA
Priority to AT84630036T priority Critical patent/ATE32526T1/de
Publication of EP0125198A1 publication Critical patent/EP0125198A1/fr
Application granted granted Critical
Publication of EP0125198B1 publication Critical patent/EP0125198B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/068—Decarburising
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0025—Adding carbon material
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/30—Regulating or controlling the blowing
    • C21C5/32—Blowing from above
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4606—Lances or injectors

Definitions

  • the present invention relates to a device for accelerating solid particles via a gas.
  • Such devices can in particular be used to recarburize steel baths in the process of refining.
  • the consumption of scrap metal per ton of liquid pig iron is commonly around 300 kg when converting lean pig iron and around 400 kg for phosphorous pig iron. To reduce the cost price of steel, these addition rates must be exceeded.
  • One of the known methods consists in increasing the post-combustion rate of the CO emerging from the bath, while ensuring that the bath absorbs a maximum of the released heat. Another method is to heat the metal bath using additional energy sources.
  • the applicant has described in its patent application LU 84444 a system for supplying solids with a blowing lance used to supply a metal bath with fuel.
  • the installation used comprises at least one source of compressed gas, a circuit for supplying carbonaceous material suspended in a gas, at least one circuit for supplying sweeping gas, means for metering the different flow rates of gas and carbonaceous material and means for separately or jointly connecting said circuits to a conduit leading to the lance.
  • nozzles comprising a converging, a groove and a diverging so that the diverging zone has a concave shape, which is connected to the groove having a substantially convex profile.
  • the length of the ducts depends on the location of the cellular metering device and the lance-carrying carriage.
  • the lance heads just like the lance-carrying carriages do not allow certain diameters of the conduits to be exceeded for reasons of sizing resp. weight.
  • the object of the invention is to propose an acceleration device which solves the problems set out above and which is, on the one hand, capable of supplying at its outlet a jet of concentrated granular material, having as high a speed as possible and which d another side is capable of being easily integrated into existing installations.
  • the idea underlying the invention stems from tests carried out on lances of various dimensions, fed by gas pressures and various gas / solid particle mixtures and tending to adjust the decrease in gas pressure in the duct. so as to have a maximum speed of the particles at the outlet of the conduit.
  • the convergent was not chosen at a constant but variable angle of convergence so that the pressure drop P1 of the gas was practically monotonic from the entry of the gas into the convergent until its exit from the divergent, any pressure jump resulting in turbulence in the flow.
  • the angle made by the profile A10 with the axis of the conduit starts from a maximum negative value, decreases continuously, goes through zero and then increases continuously.
  • the duct shown in fig. a has a diameter which widens from 4.7 cm (meter 0) to 8.7 cm at the mouth (meter 15.5).
  • the speed of the particles V2 increases almost linearly and is 195 m / s at the mouth.
  • the applicant adjusts the speed of the particles by means of a specific profile of the duct, the length of the latter being of secondary importance.
  • Acceptable particle velocities have for example been observed by reducing the duct having a variable section up to a length of 5 m. Below this value the results are no longer convincing.
  • the nozzle to be dimensioned is subdivided into n finite elements of length varying from 1 to 10 cm.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Saccharide Compounds (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Catalysts (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Steroid Compounds (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Manufacturing Of Micro-Capsules (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Disintegrating Or Milling (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
EP84630036A 1983-03-11 1984-03-08 Dispositif d'accélération de particules solides Expired EP0125198B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84630036T ATE32526T1 (de) 1983-03-11 1984-03-08 Vorrichtung zur beschleunigung fester teilchen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU84686 1983-03-11
LU84686A LU84686A1 (fr) 1983-03-11 1983-03-11 Dispositif d'acceleration de particules solides

Publications (2)

Publication Number Publication Date
EP0125198A1 EP0125198A1 (fr) 1984-11-14
EP0125198B1 true EP0125198B1 (fr) 1988-02-17

Family

ID=19730048

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84630036A Expired EP0125198B1 (fr) 1983-03-11 1984-03-08 Dispositif d'accélération de particules solides

Country Status (16)

Country Link
US (1) US4603810A (pt)
EP (1) EP0125198B1 (pt)
JP (1) JPS59177311A (pt)
KR (1) KR840007898A (pt)
AT (1) ATE32526T1 (pt)
AU (1) AU566789B2 (pt)
BR (1) BR8401037A (pt)
CA (1) CA1234488A (pt)
DE (1) DE3469371D1 (pt)
ES (1) ES530476A0 (pt)
FI (1) FI74735C (pt)
IN (1) IN162131B (pt)
LU (1) LU84686A1 (pt)
NO (1) NO840915L (pt)
PT (1) PT78225B (pt)
ZA (1) ZA841306B (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU85363A1 (fr) * 1984-05-15 1986-01-29 Arbed Dispositif d'adaptation pour tuyere d'acceleration de particules solides
CA1272662A (en) * 1985-03-26 1990-08-14 Canon Kabushiki Kaisha Apparatus and process for controlling flow of fine particles
CA1272661A (en) * 1985-05-11 1990-08-14 Yuji Chiba Reaction apparatus
JP2512449B2 (ja) * 1986-10-21 1996-07-03 協和醗酵工業株式会社 粉粒体の高濃度気力輸送方法及びその装置
US5199762A (en) * 1991-12-02 1993-04-06 Scheele Rick L Square-backed vehicle air foil system
US5520331A (en) * 1994-09-19 1996-05-28 The United States Of America As Represented By The Secretary Of The Navy Liquid atomizing nozzle
US6571736B2 (en) 2001-02-22 2003-06-03 Lance H. Patterson Feeder for moist fish feed
US7475831B2 (en) * 2004-01-23 2009-01-13 Delphi Technologies, Inc. Modified high efficiency kinetic spray nozzle
US9446531B2 (en) 2013-03-15 2016-09-20 Vanmark Equipment Llc Constant acceleration hydrocutting system
US9290159B1 (en) * 2014-04-04 2016-03-22 See Ii Corporation Air foil systems and methods
GB201509585D0 (en) 2015-06-03 2015-07-15 Bripco Bvba -
GB201511070D0 (en) 2015-06-23 2015-08-05 Bripco Bvba Data centre cooling system
JP2020514520A (ja) * 2017-01-06 2020-05-21 フェニックス アドバンスド テクノロジーズ リミテッドＦｅｎｉｘ Ａｄｖａｎｃｅｄ Ｔｅｃｈｎｏｌｏｇｉｅｓ，Ｌｉｍｉｔｅｄ 固体燃料粒子の可搬性可燃性気体浮遊物
CN107952194A (zh) * 2017-12-18 2018-04-24 山东宏达科技集团有限公司 一种以液氮为喷射动力的多功能消防车及混合喷射炮

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE571082A (pt) *
US871208A (en) * 1906-04-16 1907-11-19 Alfred Cotton Jet-blower.
US2175160A (en) * 1935-07-02 1939-10-03 Linde Air Prod Co Nozzle for cutting blowpipes
US2310265A (en) * 1939-09-18 1943-02-09 Robert P Sweeny Pneumatic conveying apparatus
BE576161A (fr) * 1958-03-03 1959-08-26 Siderurgie Fse Inst Rech Dispositif pour communiquer des vitesses élevées à des particules en suspension dans un gaz.
FR1202754A (fr) * 1958-04-25 1960-01-13 Arbed Dispositif pour l'injection de produits pulvérulents ou granulés dans un bain métallique
DE1433539A1 (de) * 1963-10-19 1968-11-28 Gutehoffnungshuette Sterkrade Verfahren und Blasrohr zum Frischen einer Metallschmelze,insbesondere von Roheisen
IT997285B (it) * 1973-08-08 1975-12-30 Italsider Spa Perfezionamenti agli ugelli per le teste di lancia per il soffiag gio dell ossigeno dall alto nei processi di affinazione
US4038786A (en) * 1974-09-27 1977-08-02 Lockheed Aircraft Corporation Sandblasting with pellets of material capable of sublimation
LU83814A1 (fr) * 1981-12-04 1983-09-01 Arbed Procede et dispositif pour l'affinage d'un bain de metal contenant des matieres refroidissantes solides

Also Published As

Publication number Publication date
DE3469371D1 (en) 1988-03-24
FI840840A0 (fi) 1984-03-02
ATE32526T1 (de) 1988-03-15
ES8600416A1 (es) 1985-10-01
NO840915L (no) 1984-09-12
FI74735B (fi) 1987-11-30
PT78225A (fr) 1984-04-01
AU2544984A (en) 1984-09-13
AU566789B2 (en) 1987-10-29
IN162131B (pt) 1988-04-02
LU84686A1 (fr) 1984-11-14
US4603810A (en) 1986-08-05
PT78225B (fr) 1986-04-23
ES530476A0 (es) 1985-10-01
FI74735C (fi) 1988-03-10
CA1234488A (fr) 1988-03-29
KR840007898A (ko) 1984-12-11
EP0125198A1 (fr) 1984-11-14
JPS59177311A (ja) 1984-10-08
ZA841306B (en) 1984-09-26
BR8401037A (pt) 1984-10-16
FI840840A (fi) 1984-09-12

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