METHOD FOR REMOVING RADIOACTIVE ELEMENT THORIUM IN RARE EARTH MINERAL

    公开(公告)号:US20190144968A1

    公开(公告)日:2019-05-16

    申请号:US16300565

    申请日:2017-07-05

    摘要: The present invention relates to a method for removing radioactive element thorium in a rare earth mineral, comprising: mixing the rare earth mineral with selenium dioxide in water, reacting radioactive element thorium with selenium dioxide by hydrothermal method, cooling to form a crystal, and separating the crystal to remove the radioactive element thorium. In the invention, tetravalent element thorium is selectively bound to inorganic ligand selenium dioxide in a hydrothermal environment to form a crystal, thereby achieving removal of radioactive element thorium. The method has high crystallization rate and high decontamination efficiency, and removes thorium from trivalent lanthanide element by crystallization solidification under a uniform reaction condition. Compared to a conventional industrial method for thorium separation, the method has low energy consumption and high separation ratio, enables one-step solidification separation, and effectively avoids the disadvantages of redundant separation operations and a large amount of organic and radioactive liquid wastes.

    Method of manufacturing CI(G)S nano particles for manufacturing light absorption layer and CI(G)S nano particles manufactured using the same
    3.
    发明授权
    Method of manufacturing CI(G)S nano particles for manufacturing light absorption layer and CI(G)S nano particles manufactured using the same 有权
    制造用于制造光吸收层的CI(G)S纳米颗粒和使用其制备的CI(G)S纳米颗粒的方法)

    公开(公告)号:US09356168B2

    公开(公告)日:2016-05-31

    申请号:US14588864

    申请日:2015-01-02

    申请人: LG CHEM, LTD.

    IPC分类号: H01L31/032 C01B19/00

    摘要: Disclosed are a method of preparing CI(G)S nano particles forming a light absorption layer of solar cells, including dissolving at least one Group VI source selected from the group consisting of compounds comprising sulfur (S), selenium (Se), or a combination thereof, and an indium (In) salt in a solvent to prepare a first solution, reacting the first solution to form first precursor particles, dissolving a copper (Cu) salt in a solvent to prepare a second solution, mixing the second solution with the first solution in which the first precursor is formed to manufacture a mixture and purifying the synthesized CI(G)S nano particles after synthesizing the CI(G)S nano particles by reacting the mixture, and CI(G)S nano particles manufactured using the same.

    摘要翻译: 公开了制备形成太阳能电池的光吸收层的CI(G)S纳米颗粒的方法,包括溶解至少一种选自由硫(S),硒(Se)或 其组合,和铟(In)盐在溶剂中制备第一溶液,使第一溶液反应形成第一前体颗粒,将铜(Cu)盐溶解在溶剂中以制备第二溶液,将第二溶液与 形成第一前体以制备混合物并在通过使该混合物反应合成CI(G)S纳米颗粒之后)纯化合成的CI(G)S纳米颗粒的第一溶液和使用制备的CI(G)S纳米颗粒 一样。

    Process and apparatus for the production of nanometer-sized powders
    6.
    发明授权
    Process and apparatus for the production of nanometer-sized powders 有权
    用于生产纳米级粉末的方法和设备

    公开(公告)号:US06398125B1

    公开(公告)日:2002-06-04

    申请号:US09780598

    申请日:2001-02-10

    IPC分类号: B05B124

    摘要: A two-stage process and apparatus for producing nanometer-scaled powders from a metal, the process including (a) operating a first-stage heating and atomizing device to provide a stream of super-heated fine-sized metal liquid droplets into a chamber of a second-stage atomizing device; (b) operating this second-stage atomizing device by directing an atomizing fluid medium to impinge upon the stream of super-heated metal liquid droplets to further break up the metal liquid droplets into substantially nanometer-sized particles; and (c) cooling these particles to form nanometer-sized solid powders. The first-stage heating and atomizing device preferably includes a twin-wire arc spray device. The second-stage atomizing device preferably includes a vortex jet nozzle.

    摘要翻译: 一种用于从金属制造纳米级粉末的两阶段方法和装置,该方法包括(a)操作第一级加热和雾化装置,以将过热的细小金属液滴流提供到 第二级雾化装置; (b)通过引导雾化流体介质冲击超级加热的金属液滴流来进一步将金属液滴分解成基本上纳米级的颗粒来操作该第二级雾化装置; 和(c)冷却这些颗粒以形成纳米尺寸的固体粉末。 第一级加热和雾化装置优选地包括双线电弧喷射装置。 第二级雾化装置优选地包括涡流喷嘴。

    MESOPOROUS METAL OXIDES AND PROCESSES FOR PREPARATION THEREOF
    8.
    发明申请
    MESOPOROUS METAL OXIDES AND PROCESSES FOR PREPARATION THEREOF 有权
    多种金属氧化物及其制备方法

    公开(公告)号:US20140286846A1

    公开(公告)日:2014-09-25

    申请号:US14037107

    申请日:2013-09-25

    摘要: A process for preparing a mesoporous metal oxide, i.e., transition metal oxide, Lanthanide metal oxide, a post-transition metal oxide and metalloid oxide. The process comprises providing a micellar solution comprising a metal precursor, an interface modifier, a hydrotropic ion precursor, and a surfactant; and heating the micellar solution at a temperature and for a period of time sufficient to form the mesoporous metal oxide. A mesoporous metal oxide prepared by the above process. A method of controlling nano-sized wall crystallinity and mesoporosity in mesoporous metal oxides. The method comprises providing a micellar solution comprising a metal precursor, an interface modifier, a hydrotropic ion precursor, and a surfactant; and heating the micellar solution at a temperature and for a period of time sufficient to control nano-sized wall crystallinity and mesoporosity in the mesoporous metal oxides. Mesoporous metal oxides and a method of tuning structural properties of mesoporous metal oxides.

    摘要翻译: 一种制备介孔金属氧化物,即过渡金属氧化物,镧系元素金属氧化物,后过渡金属氧化物和准金属氧化物的方法。 该方法包括提供包含金属前体,界面改性剂,水溶助离子前体和表面活性剂的胶束溶液; 并在足以形成介孔金属氧化物的温度和一段时间内加热胶束溶液。 通过上述方法制备的介孔金属氧化物。 控制介孔金属氧化物中纳米尺寸壁结晶度和介孔度的方法。 该方法包括提供包含金属前体,界面改性剂,水溶助离子前体和表面活性剂的胶束溶液; 并在足以控制介孔金属氧化物中的纳米尺寸壁结晶度和介孔度的温度下加热胶束溶液。 介孔金属氧化物和调节中孔金属氧化物的结构特性的方法。

    Method for synthesizing metal oxide
    9.
    发明授权
    Method for synthesizing metal oxide 失效
    金属氧化物合成方法

    公开(公告)号:US07601324B1

    公开(公告)日:2009-10-13

    申请号:US12216835

    申请日:2008-07-11

    IPC分类号: B23B5/16 C01F7/42

    摘要: The method for synthesizing metal oxide nanopowder produces powders of nanoparticle size from metals having relatively low boiling temperatures, such as zinc, tellurium, bismuth, and strontium by vapor-phase oxidation using a conventional 2.45 GHz microwave oven. The energy that initiates the combustion comes from the microwave through a susceptor tube that absorbs radiant microwave energy and transfers it to the metal, which evaporates to small particles inside the susceptor tube and then combusts in air to form nanosize powder. The susceptor is made of silicon carbide composite material.

    摘要翻译: 合成金属氧化物纳米粉末的方法通过使用常规的2.45GHz微波炉通过气相氧化从具有较低沸点温度的金属(例如锌,碲,铋和锶)制造纳米颗粒尺寸的粉末。 启动燃烧的能量来自微波通过吸收辐射微波能量并将其转移到金属的感受管,其感应管蒸发到小颗粒,然后在空气中燃烧以形成纳米尺寸粉末。 基座由碳化硅复合材料制成。