EP0032492A1 - Silico-thermal process for obtaining, in ladle, alloys based on manganese and silicium - Google Patents
Silico-thermal process for obtaining, in ladle, alloys based on manganese and siliciumInfo
- Publication number
- EP0032492A1 EP0032492A1 EP80901328A EP80901328A EP0032492A1 EP 0032492 A1 EP0032492 A1 EP 0032492A1 EP 80901328 A EP80901328 A EP 80901328A EP 80901328 A EP80901328 A EP 80901328A EP 0032492 A1 EP0032492 A1 EP 0032492A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- manganese
- silicon
- obtaining
- alloy
- 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.)
- Withdrawn
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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C28/00—Alloys based on a metal not provided for in groups C22C5/00 - C22C27/00
Definitions
- the present invention relates to a process for obtaining, by silicothermia, manganese-based alloys, and silicon.
- manganese-based alloys such as low-carbon ferromanganese, from 0.02 to 2% (so-called “super-refined” and “refined” ferromanganese) by silicothermic reaction between a liquid phase obtained by reductive fusion of a manganese and lime ore. and a silico-manganese containing from 10 to 45% of silicon.
- these silico-manganese with a medium silicon content are relatively easy to manufacture, their use entails some drawbacks.
- the silico-manganese when the silico-manganese is manufactured in advance and stored in the solid state, for example during the periods of the year when hydroelectric energy is abundant, it is necessary, at the time of use , recast, for each tonne of useful silicon, from 1.2 to 9 tonnes of the ballast made up of the alloying elements (Iron + manganese).
- the main object of the process which is the subject of the invention is to recover the manganese present in the non-exhausted slag and to obtain an alloy based on manganese, containing at least 60% and preferably at least 70%.
- manganese the balance being iron, silicon at a content between 5 and 40%, and preferably between 10 and 35%, and the usual impurities: aluminum, calcium, carbon, sulfur, phosphorus, at a total content not more than 5%, and more often than not much less than this value.
- This process involves the following stages:
- reducing alloy based on silicon, containing more than 60, and preferably more than 70% silicon.
- liquid slag and the reducing alloy are brought into contact, by stirring.
- a liquid slag substantially depleted of manganese and on the other hand, a metal whose manganese content is at least equal to 60% and, more often than not above 70%, and the silicon content of between 5 and 40% and preferably between 10 and 35%.
- Liquid slag can originate, in particular, from the reaction between a molten mixture of manganese ore and lime, on the one hand, and a reducing alloy based on silicon, on the other hand, this alloy generally being a silico- manganese containing 10 to 45% silicon; liquid slag, generally called “non-exhausted slag” can contain from 10 to 40% and, more often, from 20 to 35% of manganese in a form close to MnO.
- the other constituents of the slag are - in addition to lime added as a flux - alumina, silica and, more often than not, magnesia.
- the following standard composition can be given, by way of nonlimiting example:
- the silicon content of the reducing alloy must be at least equal to 60% and preferably at least 70%. It can reach 98 to 99% in some cases.
- the balance can consist essentially of iron, and it is then a "ferro-silicon", or by manganese and it is then a "silico-manganese" said in high capacity.
- Such silicomanganese with a high silicon content can be obtained by various known methods and, in particular: by simultaneous fusion or mixture in the molten state of at least two metals or alloys providing the elements necessary for the targeted composition.
- Another method consists in reducing, in a known manner, for example in an electric oven, oxidized compounds of at least one of the two main elements of the alloy.
- the contact of the liquid slag and the reducing alloy can be carried out by any known stirring means, such as the process of successive overturning from pocket to pocket called "Ugine-Perrin process" described, in particular, in the patents French n ° 755 939, 761 460, 762 928, 780 125, 830 064, 843 661, or even by blowing a gas, for example air or inert gas, by means of a single or double flow nozzle leading to the lower part of the pocket into which the slag and the reducing agent have been introduced, or else in a shaking pocket, or by any other equivalent means.
- a gas for example air or inert gas
- air or inert gas is preferably injected through the central part and a protective gas through the annular part.
- the reducing alloy can be introduced either into the first pocket or at the time of the first pouring into the second pocket.
- Air is blown through the nozzle with a flow rate of 26 Nm3 / h.
- the resulting agitation is maintained for 12 minutes.
- a slag containing no more than 2.3% manganese and 330 kg of silico-manganese containing 21.8% silicon and 75.6% manganese is separated by decantation.
- the mixture was then poured into a second identical pocket, previously preheated by a gas burner, then it was poured again into the first pocket, so as to ensure good mixing of the products.
- the carbon content for example, is less than 0.10%
- Air is blown through the nozzle for 12 min, with a flow rate of 26 Nm3 / h, so as to maintain intense agitation bringing the two phases into contact.
- a slag containing not more than 2.0% manganese is separated by decantation and 425 kg of silico-manganese containing 31.2% of Silicon, 66.2% of Manganese, 2.6% of Iron and less than 0.03% Carbon.
- the manganese-based alloys produced by the process which is the subject of the invention can either be used as addition alloys or introduced into cycles of silicothermal operations leading to particular types of manganese alloys which are difficult or impossible to obtain by other methods.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Procede d'obtention silico-thermique en poche d'alliages a base de manganese et de silicium. On traite, sous agitation, par un alliage reducteur a base de silicium (teneur en silicium au moins egale a 60% et, de preference, au moins egale a 70%), un laitier liquide oxyde, provenant, le plus souvent, d'operations metallurgiques anterieures, et contenant encore de 10 a 40% de manganese a l'etat de MnO. On obtient ainsi un laitier sensiblement epuise en manganese et un metal contenant plus de 60% et, generalement plus de 70% de manganese, et de 5 a 40% et, de preference, de 10 a 35% de silicium.Process for obtaining silico-thermal in ladles alloys based on manganese and silicon. Is treated, with stirring, with a reducing alloy based on silicon (silicon content at least equal to 60% and, preferably, at least equal to 70%), an oxidized liquid slag, most often coming from previous metallurgical operations, and still containing 10 to 40% manganese in the state of MnO. This gives a slag substantially depleted in manganese and a metal containing more than 60% and, generally more than 70% of manganese, and from 5 to 40% and, preferably, from 10 to 35% of silicon.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7918985 | 1979-07-17 | ||
FR7918985A FR2461759A1 (en) | 1979-07-17 | 1979-07-17 | HIGH SILICON SILICON AND MANGANESE REDUCING ALLOY, AND APPLICATIONS |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0032492A1 true EP0032492A1 (en) | 1981-07-29 |
Family
ID=9228189
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP80901328A Withdrawn EP0032492A1 (en) | 1979-07-17 | 1981-02-09 | Silico-thermal process for obtaining, in ladle, alloys based on manganese and silicium |
Country Status (13)
Country | Link |
---|---|
US (1) | US4363657A (en) |
EP (1) | EP0032492A1 (en) |
JP (1) | JPS56500891A (en) |
AU (1) | AU533104B2 (en) |
BR (1) | BR8008759A (en) |
CA (1) | CA1145164A (en) |
ES (1) | ES8105037A1 (en) |
FR (1) | FR2461759A1 (en) |
IT (1) | IT1131695B (en) |
OA (1) | OA06725A (en) |
PT (1) | PT71565A (en) |
WO (1) | WO1981000262A1 (en) |
ZA (1) | ZA804307B (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2559505B1 (en) * | 1984-02-14 | 1988-03-04 | Sofrem | PROCESS FOR PRODUCING REFINED FERRO-MANGANESE BY POCKET METALLO-THERMAL REACTIONS |
NO171798C (en) * | 1990-12-06 | 1993-05-05 | Elkem Technology | PROCEDURE FOR THE TREATMENT OF SINCED BY-PRODUCTS AND WASTE MATERIALS |
CN100572575C (en) * | 2008-04-01 | 2009-12-23 | 潘保良 | Use artificial Mn 3O 4The method of smelting low carbon manganese-silicon in electric refining furnaces |
KR100889859B1 (en) * | 2008-05-06 | 2009-03-24 | 주식회사 동부메탈 | Process for production of ultra low phosphorous and carbon ferromananganese by using of ferromanganese slag |
KR101485529B1 (en) | 2013-08-07 | 2015-01-22 | 주식회사 포스코 | Refining method of molten steel and an apparatus thereof |
WO2017100808A1 (en) | 2015-12-08 | 2017-06-15 | Mintek | Manganese waste slag treatment |
CN105907969A (en) * | 2016-05-27 | 2016-08-31 | 西安建筑科技大学 | Process for producing metal manganese by using submerged arc furnace and rocking furnace |
CN110218883A (en) * | 2019-06-24 | 2019-09-10 | 内蒙古普源铁合金有限责任公司 | A kind of method of smelting of silicomanganese |
CA3161603A1 (en) * | 2019-11-27 | 2021-06-03 | Umicore | Pyrometallurgical process for recovering nickel, manganese, and cobalt |
CN114395719A (en) * | 2021-12-02 | 2022-04-26 | 安阳钢铁股份有限公司 | Production method of alloy steel 27SiMn hot rolled steel strip |
CN114540680A (en) * | 2022-02-11 | 2022-05-27 | 百色智成新材料科技有限公司 | Process for producing high-purity manganese-silicon-aluminum alloy by using rocking furnace silicon reduction furnace external refining method |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR755939A (en) * | 1932-08-29 | 1933-12-01 | Electrochimie Soc | Improvements to the process for obtaining ferroalloys with a very low carbon content |
US2810639A (en) * | 1956-08-10 | 1957-10-22 | Harry H Kessler | Alloy for addition to molten cast iron |
FR1321508A (en) * | 1962-02-06 | 1963-03-22 | Pechiney Prod Chimiques Sa | Manufacturing process of metals and alloys by metallo-thermal reduction |
US3329497A (en) * | 1964-03-31 | 1967-07-04 | Union Carbide Corp | Process for the manufacture of ferromanganese-silicon |
DE1270822B (en) * | 1964-08-21 | 1968-06-20 | Res Inst Iron Steel | Silicon impact alloys for refining iron and steel |
US3347664A (en) * | 1965-03-23 | 1967-10-17 | Union Carbide Corp | Process for the production of low silicon, medium-to-low carbon ferromanganese |
SU486072A1 (en) * | 1973-03-29 | 1975-09-30 | Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт | Alloy based on alloying and deoxidization of iron and steel |
-
1979
- 1979-07-17 FR FR7918985A patent/FR2461759A1/en active Granted
-
1980
- 1980-07-15 JP JP50162980A patent/JPS56500891A/ja active Pending
- 1980-07-15 BR BR8008759A patent/BR8008759A/en not_active IP Right Cessation
- 1980-07-15 US US06/253,521 patent/US4363657A/en not_active Expired - Fee Related
- 1980-07-15 AU AU61219/80A patent/AU533104B2/en not_active Ceased
- 1980-07-15 WO PCT/FR1980/000121 patent/WO1981000262A1/en not_active Application Discontinuation
- 1980-07-16 ES ES493421A patent/ES8105037A1/en not_active Expired
- 1980-07-16 CA CA000356295A patent/CA1145164A/en not_active Expired
- 1980-07-16 PT PT71565A patent/PT71565A/en unknown
- 1980-07-16 IT IT8023483A patent/IT1131695B/en active
- 1980-07-16 ZA ZA00804307A patent/ZA804307B/en unknown
-
1981
- 1981-01-17 OA OA57302A patent/OA06725A/en unknown
- 1981-02-09 EP EP80901328A patent/EP0032492A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO8100262A1 * |
Also Published As
Publication number | Publication date |
---|---|
ZA804307B (en) | 1981-07-29 |
US4363657A (en) | 1982-12-14 |
JPS56500891A (en) | 1981-07-02 |
WO1981000262A1 (en) | 1981-02-05 |
ES493421A0 (en) | 1981-05-16 |
OA06725A (en) | 1982-06-30 |
IT1131695B (en) | 1986-06-25 |
AU533104B2 (en) | 1983-10-27 |
FR2461759A1 (en) | 1981-02-06 |
AU6121980A (en) | 1981-02-13 |
PT71565A (en) | 1980-08-01 |
CA1145164A (en) | 1983-04-26 |
BR8008759A (en) | 1981-05-05 |
FR2461759B1 (en) | 1984-09-28 |
IT8023483A0 (en) | 1980-07-16 |
ES8105037A1 (en) | 1981-05-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19810224 |
|
AK | Designated contracting states |
Designated state(s): DE FR |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Withdrawal date: 19830604 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BOSCARO, LOUIS Inventor name: BUCHER, JEAN-PHILIPPE Inventor name: DEMANGE, MICHEL Inventor name: SEPTIER, LOUIS Inventor name: DUBROUS, FRANCIS |