• 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:
    The invention disclosed provides a process for recovering niobium values from aqueous hydrofluoric acid solutions by evaporating said solution to dryness and baking the residue at temperatures of 150 DEG to 250 DEG C. The solid residue is niobium oxyfluroide (NbO2F) which may then be exothermically reduced with aluminum in the presence of an alloying element such as iron, nickel, or chromium to produce a niobium alloy. The evaporated hydrofluoric acid may be recovered by condensing or absorbing the evolved vapors.
    公开号:SU1041037A3
    申请号:SU792764201
    申请日:1979-04-27
    公开日:1983-09-07
    发明作者:Абдон Густисон Роберт
    申请人:Кавеки Берилко Индастриз,Инк (Фирма)；
    IPC主号:
    专利说明:

    Od SI The invention relates to a process for producing niobium alloys widely used in various fields of engineering. A known method for producing metal niobium and alloys based on it by reducing niobium pentoxide with carbon at 1700–1900 ° C in vacuum induction furnaces. In the preparation of niobium alloys by other metals, joint reduction of the mixture of niobium pentoxide with the corresponding metal oxide ij ... is carried out. The disadvantage of the method consists in the necessity of using complex high-temperature vacuum furnaces. The closest in technical essence and the obtained result to the proposed method is the production of niobium and niobium alloys by high-temperature reduction of niobium aluminum pentoxide. Upon receipt of the alloy, the process is carried out in the presence of an appropriate metal additive 2. The reaction of the interaction of niobium pentoxide with algae takes place with the release of heat and its free energy of 4F 450 kcal. However, the released heat is still not enough to produce niobium metal or high-yield alloys on its basis, which means that the reduction process must be carried out with the addition of a chemical preheater, such as sodium chlorate. The purpose of the invention is the elimination of the use of a chemical preheater. This goal is achieved by the fact that, according to the method of obtaining nioal alloys by high-temperature reduction of niobium oxyfluoride by aluminum in the presence of a metal additive selected from the group of iron, chromium, nickel or their oxides, niobium oxyfluoride is used as the starting compound. It is advisable to carry out the process with the addition of oxides of alkaline earth metal or lithium. The process is based on the following reactions. 6Nb +, + 2А1Р SNbOjF + 10А1 AljO, + 2A1F, + ЗМО Where М is an alkaline earth metal, or 2А1Г5 + ЗЬЦО-Л12О n-БЫР. The total free energy of the reaction, if it is carried out with the addition of calcium oxide, dP -582 kcal. RIM EP 1. 45.36 kg of niobium oxyfluoride, containing 28.6 kg of niobium, is crushed to 8 mesh and mixed with 14.52 kg of aluminum powder, 7.7 kg of lime powder and 12.2 kg of iron powder. The mixture is ignited with the help of a fuse, and 37.0 kg of niobium-iron alloy containing 66.7% niobium is obtained. The niobium yield is 86.3%. Example 2. 256.28 kg of oxyfluoride. Niobi containing 158.76 kg of niobium is mixed with 78.02 kg of aluminum powder, 76.66 kg of iron powder and 52.16 kg of lime powder. The mixture is ignited using a fuse and get 223.63 kg of an alloy of niobium with iron containing 66.4% niob.i. The yield of niobium in the alloy is 90.7%. Thus, the implementation of the invention allows the reaction of the alkalothermic reduction of the niobium compound in the absence of a chemical preheater, due to the fact that at. Uses of niobium oxyfluoride are released by 2530% more heat than when using niobium pentoxide.
    权利要求:
    Claims (2)
    [1]
    1. METHOD FOR PRODUCING NIOBIUM ALLOYS by reducing the niobium oxide compound with aluminum at high temperature, in the presence of a metal additive selected from the group consisting of iron, chromium, nickel or their oxides, vol. y u and I with the fact that, in order to exclude in the process of recovery. new chemical preheater, niobium oxyfluoride is used as the starting compound.
    [2]
    2. The method of pop. 1, characterized in that the process is conducted with the addition of alkaline earth metal or lithium oxides.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1041037A3|1983-09-07|Method for producing niobium alloys
    US5318764A|1994-06-07|Processes of producing potassium fluoroaluminates
    CN109956844A|2019-07-02|A kind of preparation method of fluoropolymer/metal composite energetic material
    Markowitz et al.1965|The differential thermal analysis of perchlorates. VII. Catalytic decompositions of the alkali metal perchlorates by manganese dioxide
    US4917872A|1990-04-17|Method for producing titanium fluoride
    US4321237A|1982-03-23|Treating hydrolysis residues from preparation of titanium dioxide
    US2524957A|1950-10-10|Isocinchomeronic acid by oxidation
    US1389862A|1921-09-06|Manufacture of potassium sulfate
    US4293532A|1981-10-06|Process for producing hydrogen chloride and ammonia
    US4226995A|1980-10-07|Preparation process of 2-chloro pyrimidine
    US3173755A|1965-03-16|Synthesis of calcium cyanamide
    US4581065A|1986-04-08|Process for the metallo-thermic reduction of beryllium oxide, beryllium minerals, as well as mixtures of beryllium containing metal oxides
    US4310671A|1982-01-12|Process for producing 2,6-dichloro-3-nitropyridine
    RU2067126C1|1996-09-27|Method of lithium extraction from lithium- and aluminium-containing waste
    JPH06322455A|1994-11-22|Production of metallic antimony
    US2230827A|1941-02-04|Manufacture of guanidine nitrate
    US4277459A|1981-07-07|Process for working up organic reaction mixtures
    US2983599A|1961-05-09|Production of alkali metals
    SU1084327A1|1984-04-07|Process for preparing melted granulated vanadium pentoxide
    US2484266A|1949-10-11|Production of alkali metals from ferrophosphorus and alkali carbonates or hydroxides
    SU89841A1|1950-11-30|The method of obtaining metallic sodium and potassium
    US3288596A|1966-11-29|Chromium metal by reduction of chromic chloride with aluminum
    JPH0742114B2|1995-05-10|Vanadium lower oxide manufacturing method
    US5188810A|1993-02-23|Process for making niobium oxide
    SU767023A1|1980-09-30|Method of producing expnanded graphite
    同族专利:
    公开号 | 公开日
    BR7902578A|1979-11-20|
    US4164417A|1979-08-14|
    DE2917084A1|1979-11-08|
    DD144076A5|1980-09-24|
    CA1116409A|1982-01-19|
    JPS6027742B2|1985-07-01|
    JPS54145317A|1979-11-13|
    BE875936A|1979-10-29|
    NL7903207A|1979-10-30|
    FR2424326A1|1979-11-23|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2624562C1|2016-09-28|2017-07-04|Общество с ограниченной ответственностью "МЕТСИНТЕЗ"|METHOD OF PRODUCING BILLETS FROM ALLOYS BASED ON INTERMETALLIDES OF Nb-Al SYSTEM|FR811117A|1935-09-13|1937-04-07|Metallurg De Hoboken Soc Gen|Process for extracting tantalum and niobium from metallurgical ores or by-products|
    FR810544A|1935-09-13|1937-03-23|Metallurg De Hoboken Soc Gen|Process for treating ores, metallurgical by-products or other raw materials containing tantalum and niobium|
    FR826114A|1937-03-19|1938-03-23|Metallurg De Hoboken Soc Gen|Improvements in the processing of materials containing tantalum or niobium, or tantalum and niobium|
    FR834449A|1937-03-22|1938-11-21|Metallurg De Hoboken Soc Gen|Improvements in processes for treating materials containing tantalum or niobium|
    US2905548A|1957-09-06|1959-09-22|Fansteel Metallurgical Corp|Method of recovering tantalum and columbium|
    US2953453A|1958-06-20|1960-09-20|Nat Distillers Chem Corp|Recovery of columbium values|
    US3523128A|1968-06-17|1970-08-04|Kawecki Chem Co|Production of concentrated aqueous tantalum oxalate solution|
    US3597192A|1968-12-05|1971-08-03|Atomic Energy Commission|Preparation of tantalum metal|
    US3712939A|1971-03-29|1973-01-23|Union Carbide Corp|Method for recovering tantalum and/or columbium|DE2927835A1|1979-07-10|1981-06-04|Hermann C. Starck Berlin, 1000 Berlin|METHOD FOR RECOVERY OF HYDROFLUORIC ACID AND DEPOSITABLE RESIDUES IN THE PROCESSING OF RAW MATERIALS CONTAINING NIOBE AND / OR TANTALY|
    DE3017782C2|1980-05-09|1982-09-30|Th. Goldschmidt Ag, 4300 Essen|Process for the production of sinterable alloy powders based on titanium|
    JPH034241B2|1986-03-17|1991-01-22|Kogyo Gijutsuin|
    JPH02501217A|1987-08-27|1990-04-26|
    US5437848A|1992-07-10|1995-08-01|Cabot Corporation|Recovery of metal values from process residues|
    US6843970B1|1996-03-26|2005-01-18|Cabot Corporation|Process for recovering metal values by dissolving them in a sulfuric acid solution containing a carbon source and a reducing agent|
    US7282187B1|1996-03-26|2007-10-16|Caboi Corporation|Recovery of metal values|
    AU2581797A|1996-03-26|1997-10-17|Cabot Corporation|Method for solubilizing metal values from ta-nb-ore materials containing insoluble fluorides|
    US20040062709A1|2001-12-27|2004-04-01|Kenji Higashi|Powder of tantalum oxide or niobium oxide, and method for production thereof|
    KR20040091071A|2002-02-27|2004-10-27|스텔라 케미파 가부시키가이샤|Purification method for producing high purity niobium compound and/or tantalum compound|
    TWI274042B|2002-02-27|2007-02-21|Wagner Otto|Purification method for producing high purity niobium compound and/or tantalum compound|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/901,069|US4164417A|1978-04-28|1978-04-28|Process for recovery of niobium values for use in preparing niobium alloy products|
    [返回顶部]