RECOVERY OF LEAD AND INDIUM FROM GLASS, PRIMARILY FROM ELECTRONIC WASTE MATERIAL
    4.
    发明申请
    RECOVERY OF LEAD AND INDIUM FROM GLASS, PRIMARILY FROM ELECTRONIC WASTE MATERIAL 审中-公开
    从电子废物原料中回收玻璃和铅的铅和铟

    公开(公告)号:US20140212347A1

    公开(公告)日:2014-07-31

    申请号:US14238738

    申请日:2012-08-17

    IPC分类号: C25C3/34

    摘要: Lead and/or Indium cam be recovered from cullet containing indium and/or lead, such as cullet from CRTs and flat panel displays. A chloride salt melt including AlCl3 is used to dissolve the cullet. The melt may be electrolyzed and the lead and/or indium and other metals may be selectively electro-deposited from the salt melt. The two steps may be combined in a continuous process. The salts in the salt melt are not consumed but can be recycled, with exception of the flux due to formation of chlorine gas and alumina. It is also possible to recover lead and/or indium and other metals from the salt melt by vaporizing the respective chlorides and condensing them, or by leaching the salt phase in water and extracting the metals as hydroxides by hydrometallurgy methods.

    摘要翻译: 铅和/或铟凸轮从含有铟和/或铅的碎玻璃中回收,如来自CRT和平板显示器的碎玻璃。 使用包含AlCl 3的氯化物盐熔体来溶解碎玻璃。 可以对熔体进行电解,并且可以从盐熔体中选择性地电沉积铅和/或铟和其它金属。 这两个步骤可以在连续过程中组合。 盐熔体中的盐不被消耗,但是可以循环使用,除了由于氯气和氧化铝的形成引起的助焊剂之外。 还可以通过蒸发各自的氯化物并使其冷凝,或通过将盐相浸出在水中并通过湿法冶金方法提取金属作为氢氧化物,从盐熔体中回收铅和/或铟和其它金属。

    Electrochemical elimination of nickel from lead containing chloride
solutions
    5.
    发明授权
    Electrochemical elimination of nickel from lead containing chloride solutions 失效
    从含铅氯化物溶液中电解镍

    公开(公告)号:US4548793A

    公开(公告)日:1985-10-22

    申请号:US458148

    申请日:1983-01-14

    CPC分类号: C01G21/16 C22B13/06

    摘要: The invention relates to a process for removing nickel from lead chloride dissolved into chloride brine to obtain lead chloride solution wherein the nickel concentration is under 50 mg/liter. The present invention comprises the following steps:(a) adjusting the content of an element selected from the group of arsenic and antimony to a value of at least 1/5 of the concentration in nickel expressed in grams per liter;(b) contacting the solution from (a) with lead powder thus precipitating nickel and the said element selected from the group of arsenic and antimony.

    摘要翻译: 本发明涉及一种从溶解在氯化物盐水中的氯化铅中去除镍的方法,以获得镍浓度低于50mg /升的氯化铅溶液。 本发明包括以下步骤:(a)将选自砷和锑的元素的含量调节至至少为镍浓度的1/5,以克/升表示; (b)使来自(a)的溶液与铅粉接触,从而沉淀镍和选自砷和锑的所述元素。

    Process for preparation of ultrapure thorium fluoride
    6.
    发明授权
    Process for preparation of ultrapure thorium fluoride 失效
    制备超纯钍氟的方法

    公开(公告)号:US4519986A

    公开(公告)日:1985-05-28

    申请号:US343637

    申请日:1982-01-28

    摘要: The specification discloses a process for the preparation of ultrapure thorium fluoride (ThF.sub.4) having minimized water content and consequent maximized optical transmission of 10.6 micrometer radiation. First, thorium oxide is reacted with aqueous hydrofluoric acid to form a solid reaction product, which is then dried under controlled heating to form a hydrated thorium fluoride with a predetermined amount of hydration, namely ThF.sub.4.xH.sub.2 O where x is equal to 0.39. The hydrated thorium fluoride is exposed to a reactive atmosphere of hydrofluoric acid vapor and a selected fluoride compound in the gas phase at elevated temperature for a predetermined period of time. The reactive atmosphere removes substantially all of the water and water-derived impurities from the hydrated thorium fluoride to produce ultrapure thorium fluoride which is highly transmissive to 10.6 micrometer radiation.

    摘要翻译: 该说明书公开了一种制备超纯氟化钍(ThF4)的方法,其具有最小化的水分含量,从而最大化了10.6微米辐射的光学透射。 首先,将氧化钍与氢氟酸水溶液反应以形成固体反应产物,然后在受控加热下干燥以形成具有预定量水合的水合钍氟化物,即ThF4.xH 2 O,其中x等于0.39。 在高温下将水合钍氟化物在气相中暴露于氢氟酸蒸气和选择的氟化物的反应气氛预定的时间。 反应性气氛基本上从水合钍氟中除去水和水的杂质,以产生对10.6微米辐射高度透射的超纯钍氟化物。

    Method for recycling lead iodide and substrate of waste perovskite device

    公开(公告)号:US20240100580A1

    公开(公告)日:2024-03-28

    申请号:US18522428

    申请日:2023-11-29

    IPC分类号: B09B3/80 C01G21/16

    摘要: Provided is a method for recycling lead iodide and a substrate of a waste perovskite device. The method includes steps as follows: preparing an iodide solution having a set concentration; immersing the waste perovskite device in the iodide solution for dissolution until a perovskite substance of the waste perovskite device is not dissolved, and extracting supernatant; adding water to the supernatant for dilution, and obtaining lead iodide crystals containing a small quantity of impurities; washing the lead iodide crystals containing a small quantity of impurities, adding acid to treat the lead iodide crystals, washing the lead iodide crystals with isopropanol and ether to obtain lead iodide powder, and drying the lead iodide powder to obtain obtaining recycled lead iodide; and cleaning and recycling a substrate generated. The lead iodide is recycled according to Le Chatelier's principle, which achieves safe, environmentally friendly and low-cost recycling.

    Zinc recovery from furnace dust
    10.
    发明授权
    Zinc recovery from furnace dust 失效
    炉渣回收锌

    公开(公告)号:US4800069A

    公开(公告)日:1989-01-24

    申请号:US99677

    申请日:1987-09-21

    申请人: Derek J. Fray

    发明人: Derek J. Fray

    摘要: Zinc and other metals are recovered form strongly bound zinc ferrite compounds in furnace dust. To the dust is added 1 weight percent of free zinc oxide unless already present. The dust is treated for 1 hour at 750C with a 20:1 air:chlorine mixture whereby the zinc, lead and cadmium are removed from the dust as volatilised chloride.

    摘要翻译: 锌和其他金属在炉灰中回收形成强烈结合的铁酸锌化合物。 添加1重量百分比的游离氧化锌除非已经存在。 粉尘在75℃下用20:1空气:氯混合物处理1小时,由此锌,铅和镉作为挥发氯化物从灰尘中除去。