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EP0097993B1 - Verfahren zur Herstellung von Aluminium-Siliziumlegierungen aus Leuzit - Google Patents

Verfahren zur Herstellung von Aluminium-Siliziumlegierungen aus Leuzit Download PDF

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Publication number
EP0097993B1
EP0097993B1 EP83200887A EP83200887A EP0097993B1 EP 0097993 B1 EP0097993 B1 EP 0097993B1 EP 83200887 A EP83200887 A EP 83200887A EP 83200887 A EP83200887 A EP 83200887A EP 0097993 B1 EP0097993 B1 EP 0097993B1
Authority
EP
European Patent Office
Prior art keywords
aluminium
producing
leucite
alloy
oxides
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
EP83200887A
Other languages
English (en)
French (fr)
Other versions
EP0097993A1 (de
Inventor
Gianluigi D'altilia
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.)
Nuova Samim SpA Te Milaan Italie
Original Assignee
SAMIM AZIONARIA MINERO-METALLURGICA SpA Soc
Samim Azionaria Minero-Metallurgica SpA Soc
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 SAMIM AZIONARIA MINERO-METALLURGICA SpA Soc, Samim Azionaria Minero-Metallurgica SpA Soc filed Critical SAMIM AZIONARIA MINERO-METALLURGICA SpA Soc
Priority to AT83200887T priority Critical patent/ATE22932T1/de
Publication of EP0097993A1 publication Critical patent/EP0097993A1/de
Application granted granted Critical
Publication of EP0097993B1 publication Critical patent/EP0097993B1/de
Expired legal-status Critical Current

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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
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/22—Remelting metals with heating by wave energy or particle radiation
    • C22B9/226—Remelting metals with heating by wave energy or particle radiation by electric discharge, e.g. plasma
    • 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
    • C22B21/00—Obtaining aluminium
    • C22B21/02—Obtaining aluminium with reducing
    • 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
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/005—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys using plasma jets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/02—Making non-ferrous alloys by melting
    • C22C1/026—Alloys based on aluminium

Definitions

  • This invention relates to a process for producing an AI-Si alloy from leucite by reducing the corresponding oxides contained therein.
  • leucites of which there is a large availability in Italy
  • a large number of processes have been developed during the last 50 years for recovering alumina and alkalies, including experiments, in pilot plants and sometimes on an industrial scale.
  • From US ⁇ A ⁇ 3661561 is known a process for producing, in a blast furnace, an aluminium-silicon alloy from a charge containing carbon, an aluminium-silicon ore and pure oxygen, where the temperature in the reduction zone of the furnace ranges from about 2050°C to about 2500°C.
  • the chemical-physical energy necessary to break the formation bond of leucite or AI and Si oxides is provided both by direct reduction with the carbon and by the energy associated with the AI-Si solution in liquid phase, which subtracts Si and AI as they become formed, thus lowering the activity of the reaction products.
  • the alkaline oxides contained in the silico-aluminous concentrates are recovered separately.
  • the present invention relates to a process for producing an aluminium-silicon alloy from an aluminium-silicon ore with a carbon-containing reducing material at a temperature of 2000°C and over, characterized in that the aluminium-silicon ore to be reduced is leucite and said ore is injected in particulate form into a plasma-arc burner positioned in the bottom section of a shaft-furnace filled with solid carbon-containing reducing material exclusively, the expected molten Si-Al alloy and the slags are separately collected at the bottom of said shaft furnace, the vapour of the unreacted alkali metal- and alkaline earth-metal oxides and the exhaust gases being vented at the top of said furnace.
  • a shaft reactor 1 is filled with a reducing agent 2, preferably coke.
  • a blast furnace charger 3 is mounted at the top of the reactor 1, directly above the reactor itself, and is arranged to be continuously filled with coke to a predetermined level.
  • two level indicators 5, 6 are installed, to interact with filling members, not shown.
  • the material to be treated containing silicon and aluminium oxide, is fed through the inlet 9 either alone or in combination with the reducing material.
  • tapping means 13 for the slag there is also a plasma arc burner 11 with a feed pipe 12, and on the base of the reactor 1 there are mounted tapping means 13 for the slag, and tapping means 14 for the liquid metal.
  • the material to be treated is subjected to air blasting in the reaction zone of the reactor 1, where together with the reducing agent it becomes rapidly heated and reacts to form the liquid and gaseous reduction products.
  • the liquid products consist of an AI+Si alloy, and slag deriving from slagging agents either added separately during the operation or mixed with the material containing the metal oxides, a certain quantity of ash originating from the reducing agent also being produced.
  • the gaseous product consists of unreacted alkaline oxides and reduction gas, of which the composition depends on the reducing agent used.
  • the liquid reduction products are collected on the base of the shaft and can be discharged through the tapping holes 13, 14, whereas the gaseous products, essentially alkaline oxides, rise upwards through the shaft and are extracted through the pipe 7.
  • the coke in the shaft forms a permeable layer, through which the reaction products pass respectively towards the base and towards the top of the shaft, and in this respect the coke has the following purposes:
  • reaction gas which leaves the shaft is made to pass through the condenser 8, in which it is separated, and the metal oxides contained in it are condensed and discharged from 15.
  • the remaining gas consisting mainly of carbon monoxide and gaseous hydrogen, leaves the condenser at 16 and can be used for various purposes.
  • the material containing a leucite concentrate had the following composition: (in terms of its main elements)

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Silicon Compounds (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (1)

  1. Verfahren zur Herstellung einer Aluminium-Silizium-Legierung aus einem Aluminium-Silizium-Erz mit einem kohlenstoffhaltigen Reduktionsmittel bei einer Temperatur von 2000°C und darüber, dadurch gekennzeichnet, daß das zu reduzierende Aluminium-Silizium-Erz Leucit ist und dieses Erz in Teilchenferm in einen Plasma-Bogenbrenner eingeführt wird, der im Bodenteil eines Schachtofens angeordnet ist, der ausschließlich mit festem, kohlstoffhaltigem Reduktionsmaterial gefüllt ist, wobei die angestrebte geschmolzene Si-AI-Legierung und die Schlacken getrennt am Boden dieses Schachtofens abgezogen werden und die Dämpfe der nicht umgesetzten Alkalimetall- und Erdalkalimetalloxide und die Abgase am Kopf dieses Ofens abgenommen werden.
EP83200887A 1982-06-22 1983-06-17 Verfahren zur Herstellung von Aluminium-Siliziumlegierungen aus Leuzit Expired EP0097993B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83200887T ATE22932T1 (de) 1982-06-22 1983-06-17 Verfahren zur herstellung von aluminiumsiliziumlegierungen aus leuzit.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT21976/82A IT1152984B (it) 1982-06-22 1982-06-22 Procedimento per la produzione di una lega alluminio silicio da concentrati contenenti gli ossidi corrispondenti anche chimicamente tra loro e/o con altri ossidi metallici
IT2197682 1982-06-22

Publications (2)

Publication Number Publication Date
EP0097993A1 EP0097993A1 (de) 1984-01-11
EP0097993B1 true EP0097993B1 (de) 1986-10-15

Family

ID=11189648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83200887A Expired EP0097993B1 (de) 1982-06-22 1983-06-17 Verfahren zur Herstellung von Aluminium-Siliziumlegierungen aus Leuzit

Country Status (5)

Country Link
EP (1) EP0097993B1 (de)
AT (1) ATE22932T1 (de)
DE (1) DE3366969D1 (de)
ES (1) ES523705A0 (de)
IT (1) IT1152984B (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3684480D1 (de) * 1986-09-29 1992-04-23 Vni Pi Aljuminievoi Magnievoi Verfahren zur herstellung von aluminosilikonlegierungen mit 2-22 gewichtsprozent silizium.
US4765831A (en) * 1986-12-24 1988-08-23 Aluminum Company Of America Process for production of alkaline earth metal by carbothermic production of alkaline earth metal aluminide and stripping of alkaline earth metal from alkaline earth metal aluminide with nitrogen stripping agent
US4769067A (en) * 1986-12-24 1988-09-06 Aluminum Company Of America Process for production of aluminum by carbothermic production of an alkaline earth metal aluminide such as calcium aluminide and recycling of reactant byproducts
US4770696A (en) * 1986-12-24 1988-09-13 Aluminum Company Of America Process for carbothermic production of calcium aluminide using calcium carbide
US4812168A (en) * 1986-12-24 1989-03-14 Aluminum Company Of America Process for carbothermic production of alkaline earth metal aluminide and recovery of same
US4735654A (en) * 1986-12-24 1988-04-05 Aluminum Company Of America Process for reduction of metal compounds by reaction with alkaline earth metal aluminide
US4765832A (en) * 1986-12-24 1988-08-23 Aluminum Company Of America Process for carbothermic production of calcium aluminide using slag containing calcium aluminate
US4769069A (en) * 1986-12-24 1988-09-06 Aluminum Company Of America Process for production of aluminum by carbothermic production of alkaline earth metal aluminide and stripping of aluminum from alkaline earth metal aluminide with halide stripping agent
US4769068A (en) * 1986-12-24 1988-09-06 Aluminum Company Of America Process for production of aluminum by carbothermic production of alkaline earth metal aluminide and stripping of aluminum from alkaline earth metal aluminide with sulfurous stripping agent
US4997476A (en) * 1988-12-08 1991-03-05 Plasma Energy Corporation Recovery of free aluminum from aluminum dross using plasma energy without use of a salt flux
CN104674031A (zh) * 2015-03-02 2015-06-03 天津立中合金集团有限公司 铝合金熔炼过程中工业硅的新型加入方法
KR20240119690A (ko) * 2023-01-30 2024-08-06 부산대학교 산학협력단 질화알루미늄의 분포가 제어된 경사기능구조의 알루미늄 기지 복합재료 및 이의 제조방법

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661561A (en) * 1970-08-03 1972-05-09 Ethyl Corp Method of making aluminum-silicon alloys

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365185A (en) * 1963-01-31 1968-01-23 Boliden Ab Production of metals from pulverulent materials by flash smelting in an electrically heated furnace
US4002466A (en) * 1975-11-03 1977-01-11 Bethlehem Steel Corporation Method of reducing ores
FR2330772A1 (fr) * 1975-11-07 1977-06-03 Reynolds Metals Co Perfectionnements aux procedes pour la production de l'aluminium
US4053303A (en) * 1976-12-06 1977-10-11 Aluminum Company Of America Method of carbothermically producing aluminum-silicon alloys
US4129742A (en) * 1977-07-01 1978-12-12 Southwire Company Plasma arc vertical shaft furnace
IT1194749B (it) * 1981-05-19 1988-09-28 Italia Alluminio Processo metallurgico di trattamento di minerali silico-alluminosi-alcalini particolarmente minerali leucitici

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3661561A (en) * 1970-08-03 1972-05-09 Ethyl Corp Method of making aluminum-silicon alloys

Also Published As

Publication number Publication date
IT8221976A0 (it) 1982-06-22
ES8501006A1 (es) 1984-11-01
EP0097993A1 (de) 1984-01-11
DE3366969D1 (en) 1986-11-20
ES523705A0 (es) 1984-11-01
ATE22932T1 (de) 1986-11-15
IT1152984B (it) 1987-01-14

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