• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Aluminum-silicon alloys are formed by bringing a mix containing sources of alumina, silica and carbon to a temperature in the range of 1500 to 1600.degree.C to form silicon carbide and carbon monoxide. The mix containing the silicon carbide is then brought to a temperature in the range of 1600 to 1900.degree.C to form aluminum oxycarbide and carbon monoxide. Thereafter, the mix containing the silicon carbide and aluminum oxycarbide is brought to a temperature in the range of 1950 to 2200.degree.C to produce an aluminumsilicon alloy.
    公开号:SU786919A3
    申请号:SU772525351
    申请日:1977-09-07
    公开日:1980-12-07
    发明作者:Норман Кочран Чарльз；Альдо Милито Ричард；Кумар Дас Субодх
    申请人:Алюминум Компани Оф Америка (Фирма)；
    IPC主号:
    专利说明:

    (54) METHOD OF CARBOTHERMIC PRODUCING OF ALUMINUM ALLOYS WITH SILICON
    I
    The invention relates to the metallurgy of non-ferrous metals and alloys, in particular to the production of α-alloys of aluminum with silicon from materials containing alumina and silica.
    A known method for carbothermic production of an aluminum-silicon alloy from materials containing alumina and silicon dioxide, including stepwise heating of the mixture with carbon, to produce silicon carbide and carbon monoxide in the first stage, and an aluminum-silicon alloy at the last stage (1.
    The disadvantage of this method is 1shzkom the output of the alloy components.
    The purpose of the invention is to increase the efficiency of the process.
    The goal is achieved by the fact that the first stage is carried out at a temperature of 1500-1600 ° C, the resulting mixture containing silicon carbide is heated to a temperature of 1600-1900 ° C to produce aluminum oxycarbide and carbon monoxide, after which the resulting silicon carbide and aluminum oxycarbide together heated to a temperature of 1950-2200 ° C with obtaining at the third stage of the alloy
    aluminum with silicon and carbon monoxide; the carbon monoxide of the first stage is removed from the reaction zone without contact with the second and third stage materials, and carbon oxide of the second stage is removed without contact with the third stage materials.
    The initial mixture may contain 15-30 wt.% Carbon.
    In the first stage, it is advisable to subcenter to give a ratio of silicon dioxide and oxide
    10 aluminum in the range from 0.15 to 1.1 by weight, preferably from 0.7 to 1.0.
    The method is carried out as follows.
    To obtain an aluminum-silicon alloy, a mixture containing dioxide is prepared.
    IS silicon, alumina and carbon. The carbon content in the mixture should be from 15 to 30% by weight, preferably from 19 to 28% by weight. To increase the efficiency of the process, the weight ratio of silica and
    20 alumina in the mixture should range from 0.15 to 1.1, preferably from 0.7 to 1.0.
    In carrying out the present invention, materials with low
    权利要求:
    Claims (2)
    [1]
    25 contains alumina (from 8 to 35 wt.% N with a silica content of 25 to 65 wt.%, For example, anorthosite, nepheline, dawsonite, bauxite, laterite) l. The establishment of the aforementioned collospia of silica and alumina of the starting material can be enriched with known physical or chemical methods. The process of obtaining the alloy occurs in accordance with the following reactions: SSiOj + 9C 3SiC + 6 CO (1) SAljOg + CS 2 CO (2) -b; 3SiC 4 A1 + 3 Si + 4CO (3) Reactions 1, 2 and 3 are carried out at ISOO-1600 ° C, 1600-1900 ° C and 19502200 ° C, respectively. When producing an alloy in the mine area, the specified temperature zones are located from top to bottom, which ensures the removal of carbon monoxide without passing it through the subsequent high-temperature zones. This makes it possible to increase the yield of the metal. Primer p. 1500 anorthosite containing 25% alumina and 55% silica (25 mesh) were mixed with 557 g of alumina (100 mesh size 457 g of calcined petroleum coke and 432 g of coal tar pitch. The mixture was pressed and the resulting briquettes were calcined at 1100 C. Alumina was added to anorthosite to adjust the ratio between silica and alumina, which was 0.89 in the example. The briquetted mixture was heated in a graphite crucible in an induction furnace for 562 minutes. The temperature was controlled by an optical pyrometer. There was also a volume of carbon monoxide emitted.After 112 minutes of heating, the maximum emission of carbon monoxide was detected at a temperature that corresponded to the progress of reaction 1. Within 276 minutes after the start of heating, a second emission maximum was set (carbon at 1780 ° C, which results in the formation of aluminum oxycarbide by reaction 2, heating was prolonged, and after 80 min from the start of the process a third maximum was detected at a temperature of 2080 ° C. The amount of acid kis carbon corresponded to reaction 3, After cooling the crucibles and Lisa resulting product established that obtained 63 g alyumishsh alloy, silicon. Claim 1. Carbothermic production of aluminum-silicon alloy from materials containing alumina and silicon dioxide, including stepwise heating of the mixture with carbon to produce in the first stage silicon carbide and carbon monoxide, and at the last stage - an alloy of aluminum with creamem, differing in that, in order to increase the efficiency of the process, the first stage is carried out at a temperature of 1500-1600 ° C, the resulting mixture containing silicon carbide is heated to a temperature of 1600-1900 ° C to produce aluminum oxycarbide and oxide carbon monoxide, after which the resulting silicon carbide and alumini oxycarbide are jointly heated to a temperature of 1950-2200 ° C to produce in the third stage an aluminum-silicon alloy and carbon monoxide, while the carbon monoxide of the first stage is removed from the reaction zone without contact with the second and the third stage, and the second stage carbon monoxide is removed without contact with the third stage materials,
    [2]
    2. A method according to claim 1, characterized in that the initial mixture contains 15-30% by weight of carbon; 3, the method according to claims 1 and 2, characterized in that in the first stage the ratio of silica and alumina is maintained; range from 0.15 to 1.1 by weight, preferably from 0.7 to 1.0. Sources of information taken into account in the examination 1. US patent N 3758289, CL, 75-10, published. 1973 (prototype),.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU786919A3|1980-12-07|Method of carbothermal aluminium-silicon alloy production
    US20050074388A1|2005-04-07|Medium purity metallurgical silicon and method for preparing same
    CA1141170A|1983-02-15|Aluminum purification system
    NL8120039A|1981-11-02|PRODUCTION OF MAGNESIUM OXIDE OF HIGH PURITY AND WITH A HIGH SURFACE AREA.
    DK151218B|1987-11-16|PROCEDURE FOR THE MANUFACTURE OF SILICONE IN A ELECTRON OVEN FROM QUARTZ AND CARBON
    US2962359A|1960-11-29|Process for making aluminum nitride
    US4409021A|1983-10-11|Slag decarbonization with a phase inversion
    RU2080295C1|1997-05-27|Process for preparing titanium tetrachloride
    US2776884A|1957-01-08|Process for the manufacture of aluminum
    US3661561A|1972-05-09|Method of making aluminum-silicon alloys
    US4046558A|1977-09-06|Method for the production of aluminum-silicon alloys
    US3092455A|1963-06-04|Process of making aluminum nitride
    US2400000A|1946-05-07|Production of aluminum
    US2372571A|1945-03-27|Process for manufacturing metallic magnesium from magnesium silicates
    Yokokawa et al.1982|Reduction of alumina: effect of silicon compounds on oxycarbide behavior
    SU1309915A3|1987-05-07|Method of producing aluminium
    US3918959A|1975-11-11|Process for production of magnesium
    US3009778A|1961-11-21|Alumina manufacture in low-stack blast furnace
    US4769068A|1988-09-06|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
    US4581065A|1986-04-08|Process for the metallo-thermic reduction of beryllium oxide, beryllium minerals, as well as mixtures of beryllium containing metal oxides
    US4812168A|1989-03-14|Process for carbothermic production of alkaline earth metal aluminide and recovery of same
    RU2251586C2|2005-05-10|Method for producing ferrosilico-aluminum in ore heating furnace
    US660094A|1900-10-23|Process of treating kryolith.
    US3147076A|1964-09-01|Preparation of aluminum nitride
    KR810000571B1|1981-06-03|Method of carbothermically producing aluminium-silicon alloys
    同族专利:
    公开号 | 公开日
    GR68689B|1982-02-01|
    ZA774578B|1978-06-28|
    US4053303A|1977-10-11|
    JPS5626701B2|1981-06-20|
    IN148616B|1981-04-18|
    PL108145B1|1980-03-31|
    IT1080106B|1985-05-16|
    HU176191B|1981-01-28|
    ES462020A1|1978-11-01|
    SE7708608L|1978-06-07|
    AU507224B2|1980-02-07|
    AU2704377A|1979-01-18|
    FR2372900B1|1980-05-16|
    JPS5370906A|1978-06-23|
    PL200876A1|1978-06-19|
    BR7705858A|1978-07-18|
    CA1094329A|1981-01-27|
    NO773011L|1978-06-07|
    GB1567276A|1980-05-14|
    FR2372900A1|1978-06-30|
    DE2736544A1|1978-06-08|
    DE2736544C3|1979-12-13|
    DE2736544B2|1979-04-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3257199A|1963-07-19|1966-06-21|Reynolds Metals Co|Thermal reduction|
    US3254988A|1963-07-19|1966-06-07|Reynolds Metals Co|Thermal reduction|
    US3615347A|1969-01-21|1971-10-26|Reynolds Metals Co|Method of maximizing power utilization in the electric arc production of aluminium-silicon alloys|
    US3655362A|1969-05-16|1972-04-11|Reynolds Metals Co|Process for the thermal reduction of alumina-bearing ores|
    US3758289A|1970-05-01|1973-09-11|Ethyl Corp|Prereduction process|
    US3661561A|1970-08-03|1972-05-09|Ethyl Corp|Method of making aluminum-silicon alloys|
    US3661562A|1970-12-07|1972-05-09|Ethyl Corp|Reactor and method of making aluminum-silicon alloys|
    SU454839A1|1971-09-17|1977-11-25|Днепровский Ордена Ленина Алюминиевый Завод|Briquette for obtaining aluminium-silicon|JPS591777B2|1980-04-22|1984-01-13|Mitsui Aluminium Kogyo Kk|
    IT1194749B|1981-02-23|1988-09-28|Italia Alluminio|METALLURGIC PROCESS FOR THE TREATMENT OF SILICO-ALUMINUM-ALKALINE MINERALS, LEUCYTIC MINERALS|
    IT1152984B|1982-06-22|1987-01-14|Samim Soc Azionaria Minero Met|PROCEDURE FOR THE PRODUCTION OF AN ALUMINUM SILICON ALLOY FROM CONCENTRATES CONTAINING THE OXIDES THAT ARE ALSO CHEMICALLY BETWEEN THEM AND / OR WITH OTHER METAL OXIDES|
    US4486229A|1983-03-07|1984-12-04|Aluminum Company Of America|Carbothermic reduction with parallel heat sources|
    US4491472A|1983-03-07|1985-01-01|Aluminum Company Of America|Carbothermic reduction and prereduced charge for producing aluminum-silicon alloys|
    US4734130A|1984-08-10|1988-03-29|Allied Corporation|Method of producing rapidly solidified aluminum-transition metal-silicon alloys|
    WO1987001693A1|1985-09-20|1987-03-26|Ceramatec, Inc.|Dense ceramics containing a solid solution and method for making the same|
    JPS62108201A|1985-11-06|1987-05-19|Eisuke Yoshinobu|Crescent-shaped solar heat collecting and capturing device|
    WO1988002410A1|1986-09-29|1988-04-07|Vsesojuzny Nauchno-Issledovatelsky I Proektny Inst|Method of obtaining aluminosilicon alloy containing 2-22 per cent by weight of silicon|
    DE3684480D1|1986-09-29|1992-04-23|Vni Pi Aljuminievoi Magnievoi|METHOD FOR PRODUCING ALUMINO SILICONE ALLOYS WITH 2-22% BY WEIGHT OF SILICON.|
    US4735654A|1986-12-24|1988-04-05|Aluminum Company Of America|Process for reduction of metal compounds by reaction with alkaline earth metal aluminide|
    US4765832A|1986-12-24|1988-08-23|Aluminum Company Of America|Process for carbothermic production of calcium aluminide using slag containing calcium aluminate|
    US4770696A|1986-12-24|1988-09-13|Aluminum Company Of America|Process for carbothermic production of calcium aluminide using calcium carbide|
    US4812168A|1986-12-24|1989-03-14|Aluminum Company Of America|Process for carbothermic production of alkaline earth metal aluminide and recovery of same|
    US4765831A|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|
    US4769068A|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|
    US4769069A|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|
    US4769067A|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|
    JPH01250902A|1988-03-31|1989-10-05|Omron Tateisi Electron Co|Micro-fresnel lens|
    JPH06145836A|1992-11-16|1994-05-27|Meisei Kako Kk|Production of alloy utilizing aluminum slag|
    WO2010033108A1|2008-09-16|2010-03-25|Alcoa Inc.|Sidewall and bottom electrode arrangement for electrical smelting reactors and method for feeding such electrodes|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/747,999|US4053303A|1976-12-06|1976-12-06|Method of carbothermically producing aluminum-silicon alloys|
    [返回顶部]