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73 条记录 (耗时 0.015 秒)

    Process for recovering gallium from aluminum smelting dust
    25.
    发明授权
    Process for recovering gallium from aluminum smelting dust 失效
    从铝冶炼粉中回收镓的工艺

    公开(公告)号：US4639355A

    公开(公告)日：1987-01-27

    申请号：US757591

    申请日：1985-07-22

    申请人： Shingo Matsui ,  Hidetsugu Ikeda ,  Akio Era ,  Sanji Nishimura

    发明人： Shingo Matsui ,  Hidetsugu Ikeda ,  Akio Era ,  Sanji Nishimura

    IPC分类号： C01G17/00 ,  C01F7/20 ,  C01G15/00 ,  C22B3/26 ,  C22B3/38 ,  C22B7/02 ,  C22B58/00

    CPC分类号： C22B3/0021 ,  C01F7/20 ,  C01G15/003 ,  C22B3/0018 ,  C22B3/0063 ,  C22B7/02 ,  Y02P10/234 ,  Y10S423/14

    摘要： The present invention provides for the recovery of gallium from aluminum smelting dust. Aluminum smelting dust is leached with mineral acid, such as sulfuric acid, hydrochloric acid, or nitric acid. Gallium is extracted from the obtained leach liquor with an organic solution containing a liquid cation exchange agent. The resulting loaded organic solution is treated with mineral acid in aqueous solution, either after or before scrubbing with a higher concentration of acid in aqueous solution, to strip gallium. Gallium is extracted from this solution with another organic solution containing an ion-pair extracting type extracting agent. Finally, purified gallium is recovered by stripping the latter loaded organic solution with water or dilute acid in aqueous solution.

    摘要翻译： 本发明提供从铝冶炼粉中回收镓。 用无机酸（如硫酸，盐酸或硝酸）浸出铝冶炼粉尘。 用含有液体阳离子交换剂的有机溶液从所获得的浸提液中提取镓。 在用较高浓度的酸在水溶液中洗涤之前或之后，将所得负载的有机溶液用无机酸水溶液处理，以剥离镓。 用另一种含有离子对提取型提取剂的有机溶液从该溶液中提取镓。 最后，通过用水或稀酸在水溶液中汽提后者的有机溶液来回收纯化的镓。

    Process for the extraction of aluminum from aluminum ores
    26.
    发明授权
    Process for the extraction of aluminum from aluminum ores 失效
    从铝矿石中提取铝的工艺

    公开(公告)号：US4069296A

    公开(公告)日：1978-01-17

    申请号：US731025

    申请日：1976-10-08

    申请人： Wen H. Huang

    发明人： Wen H. Huang

    IPC分类号： C01F7/20 ,  C01F7/22

    CPC分类号： C01F7/20

    摘要： Aluminum may be recovered from various raw materials including kaolinite, alunite, coal ash and slag, and both raw and spent oil shale, by contacting such materials with an aqueous solution of hydrofluoric acid, followed by removal of the insoluble residues remaining suspended in solution and the precipitation of hydrated aluminum hydroxide from the clear solution by basification with an alkaline agent.

    摘要翻译： 可以通过将这些材料与氢氟酸的水溶液接触，然后除去残留在溶液中的不溶性残渣，从而可以从各种原料（包括高岭石，褐煤矿，煤灰和矿渣）以及原料和废油页岩中回收铝， 通过用碱性剂碱化从透明溶液中沉淀出水合氢氧化铝。

    Manufacture of alumina sol
    27.
    发明授权
    Manufacture of alumina sol 失效
    氧化铝溶胶的制造

    公开(公告)号：US4032472A

    公开(公告)日：1977-06-28

    申请号：US647231

    申请日：1976-01-07

    申请人： Kenneth R. McCallister

    发明人： Kenneth R. McCallister

    IPC分类号： C01F7/20 ,  C01F7/42 ,  C01F7/48 ,  B01J13/00

    CPC分类号： C01F7/48 ,  C01F7/20 ,  C01F7/428

    摘要： A sufficient amount of alumina is initially digested in aqueous hydrochloric or hydrofluoric acid to provide from about 5 to about 25 wt. % of the aluminum content of the desired alumina sol, and a finely divided aluminum is subsequently digested therein to provide the remaining required amount of alumina. The method enables the digestion reaction to be effected at an increased rate, and affords a sol of improved homogeniety and reproducibility.

    Production of alumina from ores
    28.
    发明授权
    Production of alumina from ores 失效
    从矿石生产氧化铝

    公开(公告)号：US3961030A

    公开(公告)日：1976-06-01

    申请号：US496577

    申请日：1974-08-12

    申请人： Tadeusz K. Wiewiorowski ,  David J. Miller

    发明人： Tadeusz K. Wiewiorowski ,  David J. Miller

    IPC分类号： C22B21/00 ,  C01B7/19 ,  C01F7/20 ,  C01F7/22 ,  C01F7/50 ,  C01G49/00

    CPC分类号： C01G49/0009 ,  C01B7/191 ,  C01F7/20 ,  C01F7/22 ,  C01F7/50

    摘要： An aluminum-containing ore such as a kaolin or montmorillonite clay is treated with a fluorine acid such as HF or H.sub.2 SiF.sub.6 to produce aluminum fluoride (AlF.sub.3) which is recovered from the liquid phase of the reaction mixture by crystallization as AlF.sub.3 . 3H.sub.2 O crystals which are then dried and dehydrated to yield AlF.sub.3. The crystallization mother liquor is recycled to the process to recover its AlF.sub.3 values. The AlF.sub.3 . 3H.sub.2 O crystals and separated solid phase of the reaction mixture are washed to recover AlF.sub.3 values and the wash streams are recycled to the process. To produce alumina, the AlF.sub.3 is pyrohydrolyzed to Al.sub.2 O.sub.3 and HF. The HF is absorbed in the crystallization mother liquor and recycled with the mother liquor to the ore treatment step. All or a part of fluorine acid requirements can also be supplied from any suitable source such as, for example, a wet process phosphoric acid facility which is a plentiful source of inexpensive fluorine. The fluorine acid requirements can be supplied in a recycle stream of the process such as the crystallization mother liquor and/or a fresh make-up stream. The process converts the aluminum values in aluminum-containing ore deposits to a form (Al.sub.2 O.sub.3) useful in the production of aluminum metal.

    摘要翻译： 将含铝矿石如高岭土或蒙脱石粘土用氟酸如HF或H 2 SiF 6处理以产生氟化铝（AlF 3），其通过结晶作为AlF 3从反应混合物的液相中回收。 3H 2 O晶体，然后将其干燥并脱水得到AlF 3。 结晶母液被回收到该过程以回收其AlF 3值。 AlF3。 将3H 2 O晶体和反应混合物的分离固相洗涤以回收AlF 3值，将洗涤流再循环至该方法。 为了生产氧化铝，AlF 3被热解为Al2O3和HF。 HF在结晶母液中被吸收并用母液再循环至矿石处理步骤。 氟酸要求的全部或一部分也可以从任何合适的来源提供，例如，一种丰富的廉价氟源的湿法磷酸设备。 可以在该方法的再循环流中提供氟酸需求，例如结晶母液和/或新鲜补充物流。 该方法将含铝矿床中的铝值转换为可用于生产铝金属的形式（Al 2 O 3）。

    Process for the acid treatment of aluminous ores for the recovery of alumina
    29.
    发明授权
    Process for the acid treatment of aluminous ores for the recovery of alumina 失效
    用于恢复氧化铝的酸处理工艺

    公开(公告)号：US3620671A

    公开(公告)日：1971-11-16

    申请号：US3620671D

    申请日：1968-10-17

    申请人： PECHINEY

    发明人： MAUREL PIERRE ,  DUHART PIERRE

    IPC分类号： C01F7/20 ,  C01F7/26 ,  C01F7/60

    CPC分类号： C01F7/26

    摘要： The recovery of alumina from acid treatment of aluminous ores wherein iron, magnesium and potassium present in the ores are also recovered, including treating the ore with aqueous suplhuric acid solution to extract the solubles, washing the residue with water to extract the complex sulfates of iron, potassium and magnesium and recovering same by crystallization upon concentration, diluting the sulfate liquor with water to reduce the H2SO4 content to about 500 g. per liter and then cooling to a temperature below 50* C. while saturating with HCl to precipitate hydrated aluminum chloride which is seaprated by filtration, cooling the filtrate while saturating with hydrochloric acid to precipitate sodium chloride which is separated by filtration and heating the remaining filtrate to liberate the hydrochloric acid, concentrating the filtrate to increase the H2SO4 content to 750850 g. per liter for recycling in treatment of a new batch of ore and purifying the hydrated aluminum chloride by recrystallization and calcining at a temperature of at least 550* C. to dissociate the aluminum chloride into alumina and hydrochloric acid which can be recovered.