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12 条记录 (耗时 0.013 秒)

    Aluminum-fluorine compound manufacture
    2.
    发明授权
    Aluminum-fluorine compound manufacture 失效
    铝氟化合物制造

    公开(公告)号：US4508689A

    公开(公告)日：1985-04-02

    申请号：US515805

    申请日：1983-07-21

    申请人： J. Finley Bush ,  Gary F. Gaydoski

    发明人： J. Finley Bush ,  Gary F. Gaydoski

    IPC分类号： C01F7/50 ,  C01F1/00 ,  C01B7/00 ,  C01B7/19

    CPC分类号： C01F7/50

    摘要： Method for improving yield of solid, sodium-poor fluoride material from an aqueous solution having ionic species containing sodium, aluminum and fluorine, including neutralizing the solution incompletely to precipitate aluminum fluoride hydroxide hydrate in preference to sodium-containing compounds such as chiolite or cryolite.

    摘要翻译： 从含有钠，铝和氟的离子物质的水溶液中提高固体，不纯的氟化钠材料的产率的方法，包括不适当地中和溶液以优先于含氯化钠氢氧化物水合物，优选含氯化物如氯化锂或冰晶石。

    Recovery of aluminum from spent liquor
    3.
    发明授权
    Recovery of aluminum from spent liquor 失效
    从废液中回收铝

    公开(公告)号：US4464347A

    公开(公告)日：1984-08-07

    申请号：US453353

    申请日：1982-12-27

    申请人： J. Finley Bush

    发明人： J. Finley Bush

    IPC分类号： C01F7/06 ,  C01F7/14 ,  C01F7/47 ,  C01D1/34

    CPC分类号： C01F7/47 ,  C01F7/0606 ,  C01F7/144 ,  C01F7/473

    摘要： In accordance with the invention, spent liquor from an alumina precipitation stage is contacted with an extraction fluid to separate the mixture into a first layer comprising the extraction fluid and at least a portion of the caustic from the spent liquor and a second layer which comprises the remainder of the spent liquor. The spent liquor may then be subjected to a further precipitation to recover further alumina. The spent liquor remaining may be further treated in subsequent extraction steps to concentrate and dispose of undesirable impurities remaining.

    摘要翻译： 根据本发明，将来自氧化铝沉淀阶段的废液与萃取流体接触，以将混合物分离成包含萃取流体的第一层和来自废液的至少一部分苛性碱，第二层包含 剩余的废酒。 然后可以将废液进一步沉淀以再回收氧化铝。 剩余的废液可以在随后的萃取步骤中进一步处理以浓缩和处理剩余的不需要的杂质。

    Reclaiming spent potlining
    5.
    发明授权
    Reclaiming spent potlining 失效
    回收乏花精

    公开(公告)号：US4889695A

    公开(公告)日：1989-12-26

    申请号：US703322

    申请日：1985-02-20

    申请人： J. Finley Bush

    发明人： J. Finley Bush

    IPC分类号： C01B7/19 ,  C01B31/04 ,  C01F7/50

    CPC分类号： C01B31/0407 ,  C01B7/191 ,  C01F7/50

    摘要： Disclosed in a process for recovering aluminum flouride, caustic, and carbon from spent potlining retrieved from an aluminum electrolytic reduction cell. Spent potlining is treated by leaching with a caustic solution to produce a fluoride-rich basic liquor and carbonaceous solid residue followed by contacting the carbonaceous solid with an acid bath of aluminum sulfate and sulfuric acid to produce a fluoride-rich acid liquor.

    摘要翻译： 公开了从铝电解还原电池回收的废碱中回收铝粉，苛性碱和碳的方法。 废碱处理通过用苛性碱溶液浸出来处理以产生富含氟化物的碱性液体和含碳固体残余物，然后将碳质固体与硫酸铝和硫酸的酸浴接触以产生富含氟化物的酸液体。

    Recovery of aluminum from spent liquor
    6.
    发明授权
    Recovery of aluminum from spent liquor 失效
    从废液中回收铝

    公开(公告)号：US4581207A

    公开(公告)日：1986-04-08

    申请号：US637743

    申请日：1984-08-06

    申请人： J. Finley Bush ,  Paul J. The

    发明人： J. Finley Bush ,  Paul J. The

    IPC分类号： C01F7/06 ,  C01F7/14 ,  C01F7/47 ,  C01D1/34

    CPC分类号： C01F7/47 ,  C01F7/0606 ,  C01F7/144 ,  C01F7/473

    摘要： A process for the purification of spent liquor from an alumina precipitation stage is disclosed wherein the spent liquor is first contacted with 50 volume % or less ethanol to form a sodium oxalate precipitate and the, after removal of the sodium oxalate precipitate is contacted with over 50 volume % of ethanol extraction fluid to separate the mixture into a first layer comprising the ethanol and at least a portion of the caustic from the spent liquor and a second layer which comprises the remainder of the spent liquor. The spent liquor may then be subjected to a further precipitation to recover further alumina. The spent liquor remaining may be further treated in subsequent extraction steps to concentrate and dispose of undesirable impurities remaining.

    摘要翻译： 公开了一种用于从氧化铝沉淀阶段纯化废液的方法，其中废液首先与50体积％或更少的乙醇接触以形成草酸钠沉淀物，并且在除去草酸钠沉淀物后，与超过50 体积％的乙醇提取流体，以将混合物分离成包含乙醇的第一层和来自废液的至少一部分苛性碱，以及包含剩余的废液的第二层。 然后可以将废液进一步沉淀以再回收氧化铝。 剩余的废液可以在随后的萃取步骤中进一步处理以浓缩和处理剩余的不需要的杂质。

    Method for regenerating adsorbent mixture of alumina and zeolite for adsorption of ammonia
    7.
    发明授权
    Method for regenerating adsorbent mixture of alumina and zeolite for adsorption of ammonia 失效
    用于再生氧化铝和沸石的吸附剂混合物以吸附氨的方法

    公开(公告)号：US4686198A

    公开(公告)日：1987-08-11

    申请号：US877638

    申请日：1986-06-23

    申请人： J. Finley Bush ,  Donald R. Mydock

    发明人： J. Finley Bush ,  Donald R. Mydock

    IPC分类号： B01J20/34 ,  B01J38/64 ,  B01D15/00 ,  C02F1/42

    CPC分类号： B01J20/3475 ,  B01J20/08 ,  B01J20/18 ,  B01J20/3408 ,  B01J20/3433 ,  B01J2220/42 ,  Y10S502/515

    摘要： A process is described for regeneration of an adsorbent having ammonia adsorbed thereon and comprising a mixture of an alumina and a Y zeolite. The adsorbent may be regenerated to substantially its original capacity for adsorbing ammonia by a two step process which comprises first treating the adsorbent with a saturated solution of an alkali metal carbonate such as sodium carbonate to remove a substantial portion of the ammonia sorbed on the adsorbent mixture and then treating the adsorbent in a second step with a saturated alkali metal bicarbonate solution such as sodium bicarbonate to restore the ammonia adsorption capacity of the adsorbent mixture to substantially its original capacity.

    摘要翻译： 描述了一种用于再生吸附有氨并且包含氧化铝和Y沸石的混合物的方法。 吸附剂可以通过两步法再生到基本上其原始吸附氨的能力，其包括首先用碱金属碳酸盐如碳酸钠的饱和溶液处理吸附剂以除去吸附在混合物上的大部分氨 然后用饱和的碱金属碳酸氢盐溶液如碳酸氢钠在第二步中处理吸附剂以将吸附剂混合物的氨吸附能力恢复到其初始容量。

    Process for the removal of sodium oxalate compounds from Bayer spent liquor
    8.
    发明授权
    Process for the removal of sodium oxalate compounds from Bayer spent liquor 失效
    从拜耳废液中除去草酸钠化合物的方法

    公开(公告)号：US4496524A

    公开(公告)日：1985-01-29

    申请号：US587589

    申请日：1984-03-08

    申请人： J. Finley Bush ,  Paul J. The

    发明人： J. Finley Bush ,  Paul J. The

    IPC分类号： C01F7/47 ,  C01F7/00 ,  C01F7/06

    CPC分类号： C01F7/473

    摘要： A process is disclosed which provides for the removal of sodium oxalate compounds from a Bayer-type process liquor, after prior precipitation of aluminum hydroxide, which comprises: treating the liquor with ethanol in an amount up to 50 vol. % of the liquor to form a first layer comprising the ethanol and at least a portion of the caustic in the liquor, and a second layer comprising the liquor; and filtering at least the liquor layer to recover a sodium oxalate precipitate. Preferably, the liquor is concentrated to provide a caustic concentration of at least 200 and, most preferably, about 250 grams per liter total caustic (measured as sodium carbonate).

    摘要翻译： 公开了一种方法，其提供了在先前沉淀氢氧化铝之后从拜耳型工艺液中除去草酸钠化合物的方法，其包括：用高达50体积％的乙醇处理该液体。 ％的液体形成包含乙醇和液体中至少一部分苛性碱的第一层，以及包含该液体的第二层; 并至少过滤液层以回收草酸钠沉淀物。 优选地，将液体浓缩以提供至少200的苛性碱浓度，最优选约250克/升总苛性碱（以碳酸钠计）。