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51. 发明授权

US4436629A Method for recovering useful products from waste products obtained when manufacturing aluminium fluoride 失效
标题翻译：在制造氟化铝时获得的废产品中有用产品的回收方法
公开(公告)号：US4436629A
公开(公告)日：1984-03-13
申请号：US333024
申请日：1981-12-21
申请人： Lennart H. A. Berglund
发明人： Lennart H. A. Berglund
IPC分类号： C01B33/26 , C01F7/50 , C01F7/54 , C02F1/60
CPC分类号： C01B33/26 , C01F7/50 , C01F7/54
摘要： The invention relates to a method for recovering useable products from waste products deriving from the manufacture of aluminium fluoride on the basis of aluminium hydroxide and fluosilicic acid. Silica contaminated with fluorine and aluminium and obtained in the manufacture of aluminium fluoride is dissolved with a strongly basic hydroxide, whereafter the first solution obtained is mixed with a second solution, obtained by dissolving aluminium hydroxide with a strongly basic hydroxide, and with waste mother liquor and optionally also washing water from the manufacture of aluminium fluoride, in such proportions that the pH-value of the mixture is from about 10-14. The silicate content of the waste products supplied is precipitated as a silicoaluminate, which is separated off, preferably by filtration, for optional further treatment or for direct use, whereafter fluorine, when present in the waste products, is recovered from filtrate by further precipitation, and whereafter the filtrate is passed to a recipient or utilized, for example, as process water in other processes. The fluorine content can be recovered from the filtrate by adding thereto an aluminium compound in an amount sufficient to precipitate out substantially all the fluorine contained in the filtrate as a fluoroaluminate respectively, which is then separated off.
摘要翻译：本发明涉及从氢氧化铝和氟硅酸的氟化铝的制造得到的废弃物中回收有用的产品的方法。用强碱性氢氧化物溶解用氟和铝污染的氟化铝和二氧化硅，然后将所得第一溶液与强碱性氢氧化物溶解氢氧化铝和废母液得到的第二溶液混合，并且还可任选地从制造氟化铝中洗涤水，其比例使得混合物的pH值为约10-14。所提供的废弃产物的硅酸盐含量以硅铝酸盐的形式沉淀，优选通过过滤分离出来，用于任选的进一步处理或直接使用，此后当通过进一步沉淀从滤液中回收氟时，然后将滤液送至接收器或例如在其它方法中用作工艺用水。通过向其中加入足够的量的铝化合物，可以从滤液中回收氟含量，该量足以使作为氟铝酸盐的氟铝酸盐中的基本上全部含氟的析出物分解析出。

52. 发明授权

US4070447A Process for preparing anhydrous aluminum fluoride 失效
标题翻译：无水氟化铝的制备方法
公开(公告)号：US4070447A
公开(公告)日：1978-01-24
申请号：US696715
申请日：1976-06-16
申请人： Tetsuhiro Ono , Minoru Aramaki , Etuo Ushirogouthi
发明人： Tetsuhiro Ono , Minoru Aramaki , Etuo Ushirogouthi
IPC分类号： C01F7/50 , C01C1/02 , C01C1/16
CPC分类号： C01F7/50
摘要： Ammonium tetrafluoroaluminate particles having an average particle size above 50.mu. are reacted with an aluminum compound such as aluminum hydroxide or oxide first at a temperature of 250.degree. C to 300.degree. C and then at a temperature of 350.degree. to 500.degree. C to form crystalline particles of anhydrous aluminum fluoride (II) with an average particle size almost corresponding to the starting ammonium tetrafluoroaluminate. The heating of the crystalline particles to a temperature above 550.degree. C results in formation of aluminum fluoride (I) with a large average particle size.
摘要翻译：将平均粒径大于50μm的四氟铝酸铵颗粒与铝化合物如氢氧化铝或氧化物首先在250℃至300℃的温度下反应，然后在350至500℃的温度下反应，形成晶体无水氟化铝（II）的颗粒，其平均粒度几乎对应于起始的四氟铝酸铵。将结晶粒子加热至550℃以上的温度导致形成平均粒径大的氟化铝（I）。

53. 发明授权

US3929415A {68 -Aluminum fluoride by evaporating aqueous MF solution of AlF{HD 3 {B under vacuum to dryness and heating 失效
标题翻译： {68-氟化铝，通过将AlF（HD 3 {B在真空下）的MF水溶液蒸发至干燥并加热
公开(公告)号：US3929415A
公开(公告)日：1975-12-30
申请号：US49091674
申请日：1974-07-22
申请人： DAIKIN IND LTD
发明人： WADA HIROYUKI , KAWAKAMI YASUMASA , KAMIHIGOSHI TUTOMU
IPC分类号： B01J27/06 , C01F7/50 , B01D9/02
CPC分类号： C01F7/50 , B01J27/06
摘要： Process for hydrofluorinating acetylene which comprises reacting acetylene with hydrogen fluoride in the vapor phase and in the presence of Epsilon -aluminum fluoride at a temperature from about 200* to about 380*C to produce vinyl fluoride and 1,1difluoroethane, and Epsilon -aluminum fluoride being prepared by evaporating an aqueous hydrofluoric acid solution of aluminum fluoride to dryness at a temperature from 30* to 120*C optionally followed by heating the resulting product at a temperature from 120* to 500*C.
摘要翻译：氢化乙炔的方法，其包括在气相和在氟化铝存在下，在约200℃至约380℃的温度下使乙炔与氟化氢反应以产生氟化乙烯和1,1-二氟乙烷，通过在30〜120℃的温度下将氟化铝的氢氟酸水溶液蒸发至干，制备氟化铝，随后在120〜500℃的温度下加热得到的产物。

54. 发明授权

US3923962A Process for effecting chemical reactions under pressure 失效
标题翻译：在压力下进行化学反应的方法
公开(公告)号：US3923962A
公开(公告)日：1975-12-02
申请号：US29258072
申请日：1972-09-27
申请人： BAYER AG
发明人： SCHAUPP KURT , SCHULZE MANFRED
IPC分类号： C07C43/10 , B01J3/00 , B01J3/04 , C01B33/107 , C01C1/16 , C01F7/50 , C07C41/00 , C07C67/00 , C08G18/08 , C01B33/12 , C01G1/00
CPC分类号： C08G18/0847 , B01J3/042 , C01C1/162 , C01F7/50
摘要： An apparatus for carrying out chemical reactions comprising a pair of substantially vertical pipes connected to one another adjacent their bottoms, means for supplying liquid to one of said pipes to maintain therein a liquid level, an overflow pipe connected to the second of said pipes at a level below the liquid level in said one pipe, and means for introducing at least one reactant to said one pipe below the liquid level therein, whereby the reaction is able to proceed under the pressure of the column of liquid in said one pipe, liquid and reaction product being continuously withdrawn. A heat exchanger may connect the two pipes adjacent their lower ends so that hot liquid in the second pipe can be cooled and recycled to the first pipe. The apparatus is especially suited for the reaction of ammonia and hexafluorosilicic acid to produce ammonium hexafluorosilicate.
摘要翻译：一种用于进行化学反应的装置，包括一对彼此靠近底部连接的基本垂直的管道，用于将液体供应到一个所述管道以保持其液面的装置，在一个管道中连接到第二管道的溢流管在所述一个管中的液位以下的装置，以及用于将至少一种反应物引入低于其液面的所述一个管的装置，由此该反应能够在所述一个管，液体中的液体柱的压力下进行，反应产物不断排出。热交换器可以将两个管连接在其下端，使得第二管中的热液体可被冷却并再循环到第一管。该装置特别适用于氨和六氟硅酸反应生成六氟硅酸铵。

55. 发明授权

US3823078A Production of fluidized alumina reduction cell feed 失效
标题翻译：生产流化铝减少细胞饲料
公开(公告)号：US3823078A
公开(公告)日：1974-07-09
申请号：US31527572
申请日：1972-12-14
申请人： REYNOLDS INT INC
发明人： BEELER L
IPC分类号： C01F7/50 , C25C3/22 , C01B7/22 , C22D3/12
CPC分类号： C25C3/22 , C01F7/50
摘要： A FLUORIDATED CALCINED ALUMINA SUITABLE FOR USE AS ALUMINUM REDUCTION CELL FEED IS PREPARED BY CALCINING ALUMINA HYDRATE, ESPECIALLY BAYER PROCESS ALUMINA HYDRATE, AND INTRODUCONG A SOURCE OF FLUORINE SUCH AS HF, WHICH MAY ALSO BE DERIVED FROM CELL WASTE GASES, SO AS TO ACHEIVE A FLUORINE CONTENT IN THE CALCINED ALUMINA BETWEEN ABOUT 1% AND 3.5% BY WEIGHT.

56. 发明授权

US3813852A Method of recovering fluorine from waste gases 失效
标题翻译：从废气中回收氟的方法
公开(公告)号：US3813852A
公开(公告)日：1974-06-04
申请号：US34273073
申请日：1973-03-19
申请人： ELKEM SPIGERVERKET AS
发明人： STEINEKE F
IPC分类号： B01D53/06 , B01D53/12 , B01D53/68 , C01F7/50 , B01D19/00
CPC分类号： C01F7/50 , B01D53/12 , B01D53/68
摘要： Fluorine from waste gases is recovered by contacting the gases with aluminum oxide in the presence of steam. The steam increases the adsorption rate of the aluminum oxide thereby improving fluorine recovery.
摘要翻译：通过在蒸汽存在下使气体与氧化铝接触来回收来自废气的氟。蒸汽增加氧化铝的吸附速率，从而提高氟回收率。

57. 发明授权

US3669619A Production of diammonium hydrogen hexafluoroaluminate and aluminum fluoride 失效
标题翻译：氢氧化二氢十六烷酸铝和氟化铝的生产
公开(公告)号：US3669619A
公开(公告)日：1972-06-13
申请号：US3669619D
申请日：1970-01-29
申请人： ELECTRIC REDUCTION CO
发明人： MEYERS NORMAN W
IPC分类号： C01F7/00 , C01F7/50 , C01F7/54 , C01F7/02
CPC分类号： C01F7/50 , C01F7/008 , C01F7/54
摘要： DIAMMONIUM HYDROGEN HEXAFLUOROALUMINATE IS FORMED BY REACTING AN ALUMINUM-CONTAINING MATERIAL WITH FLUOSILICIC ACID AT A PH SUFFICIENT TO INHIBIT PRECIPITATION OF ALUMINUM FLUORIDE TRIHYDRATE. THE F:AL ATOMIC RATIO OF THE RESULTING SOLUTION IS INCREASED TO AT LEAST 5:1 AND THE SOLUTION IS REACTED WITH AMMONIA AT A PH BELOW ABOUT 5.

58. 发明授权

US3617038A Apparatus for the continuous dehydration of aluminum fluoride hydrates 失效
标题翻译：连续去除氟化氢水凝胶的设备
公开(公告)号：US3617038A
公开(公告)日：1971-11-02
申请号：US3617038D
申请日：1969-11-18
申请人： CHEMIE LINZ AG
发明人： SCHMIDT ALFRED , WEINROTTER FERDINAND , GLOTZL ROLAND , STAUDIGL RUDOLF
IPC分类号： C01F7/50 , F27B15/00
CPC分类号： C01F7/50
摘要： Apparatus for the continuous dehydration of aluminum fluoride hydrates consisting of a fluidized-bed furnace with a cylindrical furnace jacket and a perforated plate just above the base, a lid to which gas-heated jacket radiant tubes are fixed reaching vertically almost to the said plate each of the tubes being closed at one end and having a concentric inner tube with a burner in the interior and being of almost the same length as the jacket radiant tube as well as open at the bottom so that combustion gas issuing from said burner in the interior of said inner tube flows upward in the tip of the outer tube after a change of direction of 180*. Thus both the fluidized bed outside the jacket radiant tube and, via a recuperator, the air passed to the burner are warmed.

59. 发明授权

US3606283A Process for the conversion of hydrated halides into anhydrous salts and apparatus therefor 失效
标题翻译：将水合物转化为无水盐及其装置的方法
公开(公告)号：US3606283A
公开(公告)日：1971-09-20
申请号：US3606283D
申请日：1969-07-23
申请人： BUSS AG
发明人： WEBER WILHELM GEORG
IPC分类号： C01B9/00 , C01F7/50 , C01G1/06 , F27B15/00
CPC分类号： C01F7/50 , C01G1/06
摘要： A PROCESS FOR THE CONTINOUS CONVERSION OF HYDRATED HALIDES INTO ANHYDROUS SALTS, WHICH COMPRISES PRE-CALCINING THE MOIST HYDRATE IN A FIRST STEP BY HEATING IT WITH VIGOROUS AGITATION TO A TEMPERATURE AT WHICH THE TOTAL SURFACE MOISTURE AND PART OF THE CRYSTAL WATER ARE REMOVED, AND THEREAFTER FURTHER HEATING THE PRE-CALCINED SALT IN STEPWISE OPERATION IN A GENTLY MOVING LAYER UNTIL THE TEMPERATURE FOR COMPLETE CALCINATION IS INTRODUCED BRINGING ABOUT THE MOVING ACTION, DRY GAS IS INTRODUCED INTO THE LAYER OF PRE-CALCINED SALT WHILE IT IS BEING FURTHER HEATED FOR COMPLETE CALCINATION, SAID GAS ALSO SERVING FOR ENTRAINING THE STEAM FORMED DURING THE DRYING PROCESS. THE INVENTION FURTHER RELATES TO AN APPARATUS FOR CARRYING OUT THE CALCINATION.

60. 发明授权

US3330746A Electrolytic synthesis of metallic halides 失效
标题翻译：电解合成金属卤化物
公开(公告)号：US3330746A
公开(公告)日：1967-07-11
申请号：US35671564
申请日：1964-04-02
申请人： KIYOSHI INOUE
发明人： KIYOSHI INOUE
IPC分类号： C01B33/08 , C01F7/50 , C08B37/00 , C25B1/00 , C25B3/00
CPC分类号： C25B3/00 , C01B33/08 , C01F7/50 , C08B37/00 , C25B1/00

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