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1. 发明申请

WO1999029625A1 METHOD OF TREATING SPENT POTLINER MATERIAL FROM ALUMINUM REDUCTION CELLS 审中-公开
标题翻译：从减铝细胞处理活性物质材料的方法
公开(公告)号：WO1999029625A1
公开(公告)日：1999-06-17
申请号：PCT/US1997022650
申请日：1997-12-11
申请人： GOLDENDALE ALUMINUM COMPANY
发明人： GOLDENDALE ALUMINUM COMPANY , BARNETT, Robert, J. , MEZNER, Michael, B.
IPC分类号： C01F07/04
CPC分类号： A61B18/12 , A61B18/1206 , A61B2018/0016 , A61B2018/00357 , A61B2018/0066 , A61B2018/00797 , A61B2018/1253 , A61B2018/1273
摘要： A process for treating spent potliner material from aluminum reduction cells and recovering useful products. In the process, spent potliner material is introduced into an acid digester (24) containing, for example, sulfuric acid. A gas component is produced which includes hydrogen fluoride and hydrogen cyanide. A slurry component is produced which includes carbon, silica, alumina, sodium compounds such as sodium sulfate, aluminum compounds such as aluminum sulfate, iron compounds such as iron sulfate, magnesium and calcium compounds such as magnesium and calcium sulfate. The slurry component remains in the digester after the gas component is removed. The gas component is recovered and heated an effective amount to convert or decompose the hydrogen cyanide to a remaining gas component including carbon dioxide, water, and nitrogen oxides as well as HF gas. The remaining gas component is directed through a water scrubber (44) in which the HF gas is converted to liiquid hydrofluoric acid. The hydrofluoric acid is then admixed with alumina trihydrate to form aluminum fluoride and water.
摘要翻译：一种用于从铝还原细胞处理废瓷砖材料并回收有用产品的方法。在此过程中，将废弃的瓦楞原料引入含有例如硫酸的酸性消化器（24）中。生成包含氟化氢和氰化氢的气体成分。制备包括碳，二氧化硅，氧化铝，钠化合物，硫酸钠等铝化合物，硫酸铝等铝化合物，硫酸铁等铁化合物，镁，硫酸钙等镁和钙化合物的浆料成分。在除去气体成分后，浆料成分保留在蒸煮器中。气体组分被回收并加热有效量以将氰化氢转化或分解成包括二氧化碳，水和氮氧化物以及HF气体的剩余气体组分。剩余的气体组分被引导通过水洗涤器（44），其中HF气体被转化成液体氢氟酸。然后将氢氟酸与三水合氧化铝混合以形成氟化铝和水。

2. 发明申请

WO2002090605A1 ACID DIGESTION PROCESS FOR TREATING ALUMINA-BEARING ORES TO RECOVER METAL VALUES THEREFROM 审中-公开
标题翻译：用于处理氧化铝轴承的酸消除过程以恢复其金属值
公开(公告)号：WO2002090605A1
公开(公告)日：2002-11-14
申请号：PCT/US2002/013960
申请日：2002-05-02
申请人： GOLDENDALE ALUMINUM COMPANY
发明人： BARNETT, Robert, J. , MEZNER, Michael, B.
IPC分类号： C22B21/00
CPC分类号： C22B3/08 , C01F7/20 , C01F7/26 , C01G23/053 , C01G49/02 , C01P2004/61 , C01P2004/62 , C01P2006/12 , C01P2006/80 , C22B3/06 , C22B21/0007 , Y02P10/234
摘要： A method for processing alumina-bearing ores such as bauxite to recover iron, aluminum, silicon and titanium metal values therefrom the method comprising the steps of adding the alumina-bearing ores to a digester containing an acid to provide a mixture of acid and alumina-bearing ores and heating the mixture to dissolve soluble compounds of at least one of iron, aluminum, silicon and titanium to provide a digest containing dissolved salts of the soluble compounds and to provide a gas component. Thereafter, the digest is treated with water to dissolve water soluble salts therein to provide a slurry comprised of a liquid containing water and the dissolved soluble salts and a solid component comprised of silica. The solid component is separated from the liquid and the pH of the liquid is adjusted to form an aluminate and an iron-containing precipitate. The iron-containing precipitate is separated from the liquid to provide an iron-depleted liquid whose pH is adjusted to precipitate aluminum trihydrate which is separated from the iron-depleted liquid to provide an aluminum trihydrate-depleted liquid. The pH of the aluminum trihydrate-depleted liquid is adjusted to form a precipitate comprised of at least one remaining salt in the aluminum trihydrate-depleted liquid to provide a salt-depleted liquid. The salt precipitate is separated from the salt-depleted liquid thereby recovering the metal values from the alumina-bearing ores.
摘要翻译：一种用于处理含铝矿石如铝矾土以回收其中的铁，铝，硅和钛金属值的方法，包括以下步骤：将含氧化铝的矿石加入含酸的蒸煮器中以提供酸和氧化铝 - 承载矿石并加热该混合物以溶解铁，铝，硅和钛中的至少一种的可溶性化合物，以提供含有可溶性化合物的溶解盐的消化物并提供气体成分。此后，用水处理消化物以溶解其中的水溶性盐，以提供由含有水的溶液和溶解的可溶性盐以及由二氧化硅组成的固体组分的浆料。将固体组分与液体分离，并调节液体的pH以形成铝酸盐和含铁沉淀物。将含铁沉淀物与液体分离以提供贫铁液体，其pH被调节以沉淀三水合铝，其与贫铁液体分离以提供三水合铝贫液体。调节三水合铝酸液体的pH以在三水合铝贫液体中形成由至少一种剩余的盐组成的沉淀物以提供贫盐液体。将盐沉淀物与贫盐液体分离，从而从含氧化铝的矿石中回收金属值。

3. 发明申请

WO2002068331A1 PROCESS FOR TREATING RED MUD TO RECOVER METAL VALUES THEREFROM 审中-公开
标题翻译：处理红色木马以恢复其金属值的过程
公开(公告)号：WO2002068331A1
公开(公告)日：2002-09-06
申请号：PCT/US2001/006076
申请日：2001-02-23
申请人： GOLDENDALE ALUMINUM COMPANY
发明人： BARNETT, Robert, J. , MEZNER, Michael, B.
IPC分类号： C01G23/04
CPC分类号： C01G23/00 , C01G23/04 , C01G49/00 , C01G49/02 , C22B3/44 , C22B7/007 , C22B34/12 , Y02P10/234
摘要： A method is disclosed to recover compounds from red mud comprising adding red mut (5) to a digester (10) containing an acid and heating the mixture to dissolve compounds of iron, aluminun, silicon and titanium to provide a digest containing dissolved salts of the compounds. The digest is treated with water (20) to dissolve soluble salts therein and provide a slurry of water, dissolved salts and silica. The silica is separated (30) from the liquid and the pH of the liquid is adjusted (80) to form an aluminate and an iron-containing precipitate. The precipitate is separated (90) from the liquid whose pH is adjusted (110) to precipitate aluminum trihydrate which is separated (120). The pH of the aluminum trihydrate-depleted liquid is adjusted (140) to form a precipitate of at least one remaining salt. The salt precipitate is separated (150) from the salt-depleted liquid.
摘要翻译：公开了一种从赤泥中回收化合物的方法，包括向含有酸的蒸煮器（10）加入红色mut（5）并加热该混合物以溶解铁，铝，硅和钛的化合物，以提供含有化合物。用水（20）处理消化物以溶解其中的可溶性盐，并提供水，溶解盐和二氧化硅的浆料。将二氧化硅与液体分离（30），并调节液体的pH（80）以形成铝酸盐和含铁沉淀物。将沉淀物与调节pH（110）的液体分离（90）以沉淀分离出的三水合铝（120）。调节（140）贫铝水溶液的pH以形成至少一种剩余盐的沉淀物。将盐沉淀物与贫盐液体分离（150）。

4. 发明公开

EP1047636A1 METHOD OF TREATING SPENT POTLINER MATERIAL FROM ALUMINUM REDUCTION CELLS 失效
标题翻译：方法服装穿材料ALUMIUMREDUKTIONSZELLEN的治疗
公开(公告)号：EP1047636A1
公开(公告)日：2000-11-02
申请号：EP97954553.0
申请日：1997-12-11
申请人： Goldendale Aluminum Company
发明人： BARNETT, Robert, J. , MEZNER, Michael, B.
IPC分类号： C01F7/04
CPC分类号： A61B18/12 , A61B18/1206 , A61B18/1492 , A61B2018/0016 , A61B2018/00357 , A61B2018/0066 , A61B2018/00666 , A61B2018/00678 , A61B2018/00702 , A61B2018/00708 , A61B2018/0075 , A61B2018/00791 , A61B2018/00797 , A61B2018/00815 , A61B2018/00821 , A61B2018/00827 , A61B2018/00875 , A61B2018/00892 , A61B2018/1253 , A61B2018/1273
摘要： A process for treating spent potliner material from aluminum reduction cells and recovering useful products. In the process, spent potliner material is introduced into an acid digester (24) containing, for example, sulfuric acid. A gas component is produced which includes hydrogen fluoride and hydrogen cyanide. A slurry component is produced which includes carbon, silica, alumina, sodium compounds such as sodium sulfate, aluminum compounds such as aluminum sulfate, iron compounds such as iron sulfate, magnesium and calcium compounds such as magnesium and calcium sulfate. The slurry component remains in the digester after the gas component is removed. The gas component is recovered and heated an effective amount to convert or decompose the hydrogen cyanide to a remaining gas component including carbon dioxide, water, and nitrogen oxides as well as HF gas. The remaining gas component is directed through a water scrubber (44) in which the HF gas is converted to liiquid hydrofluoric acid. The hydrofluoric acid is then admixed with alumina trihydrate to form aluminum fluoride and water.

5. 发明公开

EP1228000A1 PRODUCTION OF FUMED SILICA 审中-公开
标题翻译：热解法二氧化硅的生产
公开(公告)号：EP1228000A1
公开(公告)日：2002-08-07
申请号：EP00918288.2
申请日：2000-03-21
申请人： Goldendale Aluminum Company
发明人： BARNETT, Robert, J. , MEZNER, Michael, B.
IPC分类号： C01B33/12 , C01B33/08 , C01B7/19 , C01F7/02 , C01D5/00
CPC分类号： C01B7/191 , C01B7/193 , C01B33/18 , C01C1/244 , C01D5/00 , C01F7/141 , C01F7/26 , C01F7/50 , C01F7/56 , C01F11/24 , C01F11/46 , C03C1/002 , C04B7/24 , C04B18/0481 , C04B35/185 , C04B35/62204 , C22B21/0015 , C22B21/0046 , C22B21/0069 , Y02P10/234 , Y02P40/145 , Y02W30/91
摘要： A method for producing fumed silica and a fluorine-containing product from a source of silica in solid form and a solid material containing fluorine, the solid material selected from the group consisting of sodium aluminum tetrafluoride, cryolite, aluminum fluosilicate, ammonium bifluoride, sodium aluminum silicofluoride, and sodium flurosiliate. The method comprises the steps of digesting the silica in solid form and the solid material selected from the group consisting of sodium aluminum tetrafloride, cryolite, aluminum fluosilicate, ammonium bifluoride, sodium aluminum silicofluoride, and sodium flurosiliate in a sulfuric acid digester. The digesting step produces a first gas component comprised of silicon tetrafluoride, hydrogen fluoride and water vapor. The first gas component is removed from the digester. The gas component recovered from the digester is heated to a temperature sufficiently high to convert the silicon tetrafluoride to fumed silica in the presence of the hydrogen fluoride and the fumed silica is separated from the hydrogen fluoride.

6. 发明公开

EP1200344A1 METHOD OF RECOVERING FUMED SILICA FROM SPENT POTLINER 审中-公开
标题翻译：一种从废内衬材料RECOVERING气相二氧化硅
公开(公告)号：EP1200344A1
公开(公告)日：2002-05-02
申请号：EP00923082.2
申请日：2000-03-21
申请人： Goldendale Aluminum Company
发明人： BARNETT, Robert, J. , MEZNER, Michael, B.
IPC分类号： C01B33/12 , C01B7/19 , C01B33/08 , C22B21/00
CPC分类号： C01B7/191 , C01B7/193 , C01B33/18 , C01C1/244 , C01F7/141 , C01F7/50 , C01F7/56 , C01F11/24 , C01F11/46 , C03C1/002 , C04B7/24 , C04B18/0481 , C04B33/1324 , C04B35/185 , C04B35/62204 , C22B21/0015 , C22B21/0046 , C22B21/0069 , Y02P10/234 , Y02P40/145 , Y02P40/69 , Y02W30/91
摘要： Spent potliner from an aluminum reduction cell is subjected to an acid digest (24) and the digest may be adjusted to produce a first gas component comprised of at least one material selected from silicon tetrafluoride, hydrogen fluoride, hydrogen cyanide gas and water vapor (26) and a slurry component comprised of at least one material selected from carbon, silica, alumina, and sodium, iron, calcium and magnesium compounds. The first gas component is removed from the digester and heated to a temperature sufficiently high in a heater/oxidizer (38). Heat produced is recovered in a boiler (42). Hydrogen fluoride gas is water scrubbed (44) and formed into liquid hydrofluoric acid. Gases (56) from the water scrubber are then passed to a caustic scrubber (58) as a polishing step prior to release to the atmosphere.

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