PROCESSES FOR PREPARING ALUMINA AND VARIOUS OTHER PRODUCTS
    1.
    发明申请
    PROCESSES FOR PREPARING ALUMINA AND VARIOUS OTHER PRODUCTS 审中-公开
    制备氧化铝和各种其他产品的方法

    公开(公告)号:US20160273070A1

    公开(公告)日:2016-09-22

    申请号:US15024199

    申请日:2014-09-26

    摘要: There is provided a process for preparing alumina. The process comprise leaching an aluminum-containing material (for example an industrial waste product chosen from red mud, fly ashes and a mixture thereof), with HCl so as to obtain a leachate comprising aluminum ions and a solid, and separating the solid from the leachate. Then, the process comprises reacting the leachate with HCl so as to obtain a liquid and a precipitate comprising the aluminum ions in the form of AlCl3, and separating the precipitate from the liquid. Then, the precipitate is reacted with a base. Finally, the process comprises heating the precipitate under conditions effective for converting the precipitate into Al2O3.

    摘要翻译: 提供了一种制备氧化铝的方法。 该方法包括用HCl浸出含铝材料(例如选自红泥,飞灰及其混合物的工业废物),以获得包含铝离子和固体的浸出液,并将固体与 渗滤液 然后,该方法包括使浸出液与HCl反应,以获得液体和包含AlCl 3形式的铝离子的沉淀物,并将沉淀物与液体分离。 然后,使沉淀物与碱反应。 最后,该方法包括在有效将沉淀物转化成Al 2 O 3的条件下加热沉淀物。

    PROCESSES FOR TREATING MAGNESIUM-CONTAINING MATERIALS
    5.
    发明申请
    PROCESSES FOR TREATING MAGNESIUM-CONTAINING MATERIALS 审中-公开
    用于处理含镁材料的方法

    公开(公告)号:US20160265082A1

    公开(公告)日:2016-09-15

    申请号:US15163070

    申请日:2016-05-24

    摘要: The disclosed processes can be effective for treating various materials comprising several different metals. These materials can be leached with HCl for obtaining a leachate and a solid. Then, they can be separated from one another and a first metal can be isolated from the leachate. Then, a second metal can further be isolated from the leachate. The first and second metals can each be substantially selectively isolated from the leachate. This can be done by controlling the temperature of the leachate, adjusting pH, further reacting the leachate with HCl, etc. The metals that can be recovered in the form of metal chlorides can eventually be converted into the corresponding metal oxides, thereby allowing for recovering HCl. The various metals can be chosen from aluminum, iron, zinc, copper, gold, silver, molybdenum, cobalt, magnesium, lithium, manganese, nickel, palladium, platinum, thorium, phosphorus, uranium, titanium, rare earth element and rare metals.

    摘要翻译: 所公开的方法对于处理包含几种不同金属的各种材料是有效的。 这些材料可以用HCl浸出以获得浸出液和固体。 然后,它们可以彼此分离,并且第一金属可以从渗滤液中分离出来。 然后,第二金属可以进一步与渗滤液隔离。 第一和第二金属可以各自基本上与渗滤液选择性隔离。 这可以通过控制渗滤液的温度,调节pH值,进一步使浸出液与HCl等进行反应来完成。可以以金属氯化物形式回收的金属最终可以转化为相应的金属氧化物,从而可以回收 HCl。 各种金属可以选自铝,铁,锌,铜,金,银,钼,钴,镁,锂,锰,镍,钯,铂,钍,磷,铀,钛,稀土元素和稀有金属。