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    FLUORESCENT POWDER AND LIGHT-EMITTING DEVICE INCLUDING THE SAME
    2.
    发明申请
    FLUORESCENT POWDER AND LIGHT-EMITTING DEVICE INCLUDING THE SAME 有权
    荧光粉和发光装置，包括它们

    公开(公告)号：US20160145489A1

    公开(公告)日：2016-05-26

    申请号：US14900198

    申请日：2014-06-20

    Applicant: General Research Institute for Nonferrous Metals ,  GRIREM ADVANCED MATERIALS CO., LTD.

    Inventor： Ronghui Liu ,  Huibing Xu ,  Xiaofang Zhou ,  Chunlei Zhao ,  Qian Ma ,  Yuanhong Liu ,  Huaqiang He ,  Xiaowei Huang

    IPC: C09K11/77 ,  H01L33/50

    CPC classification number: C09K11/7792 ,  C09K11/0883 ,  C09K11/7721 ,  C09K11/7734 ,  C09K11/7749 ,  C09K11/7773 ,  C09K11/7774 ,  H01L33/504

    Abstract: The present disclosure relates to a fluorescent powder and a light-emitting device including the same. The fluorescent powder includes an inorganic compound. The inorganic compound contains components including an element M, an element A, an element D, an element E, and an element R. The element M is selected from Eu, Ce, Mn, Tb, Dy, and Tm, the element A is selected from Mg, Ca, Sr, and Ba, the element D is selected from B, Al, Ga, In, La, Gd, Sc, Lu, and Y, the element E is selected from Si, Ge, Zr, and Hf, and the element R is at least two elements selected from N, O, F, and Cl. In a powder X-Ray Diffraction (XRD) spectrum with CoKα radiation, the inorganic compound at least has diffraction peaks within ranges of an Bragg angle (2θ) from 27.3° to 28.3°, 29.7° to 30.7°, 41.9° to 42.9°, and 43.5° to 44.5°.

    Abstract translation: 本发明涉及一种荧光粉和包含该荧光粉的发光装置。 荧光粉包括无机化合物。 无机化合物含有包含元素M，元素A，元素D，元素E和元素R的成分。元素M选自Eu，Ce，Mn，Tb，Dy和Tm，元素A为 选自Mg，Ca，Sr和Ba，元素D选自B，Al，Ga，In，La，Gd，Sc，Lu和Y，元素E选自Si，Ge，Zr和Hf 元素R为选自N，O，F和Cl中的至少两种元素。 在具有CoKα辐射的粉末X射线衍射（XRD）光谱中，无机化合物至少在从27.3°至28.3°，29.7°至30.7°，41.9°至42.9°的布拉格角（2θ）范围内具有衍射峰 °，43.5°〜44.5°。

    Cerium oxide based composite polishing powder and preparation method thereof
    3.
    发明授权
    Cerium oxide based composite polishing powder and preparation method thereof 有权

    公开(公告)号：US09725620B2

    公开(公告)日：2017-08-08

    申请号：US14412366

    申请日：2013-11-07

    Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

    Inventor： Xiaowei Huang ,  Ying Yu ,  Zhiqi Long ,  Liangshi Wang ,  Dali Cui ,  Yongke Hou ,  Meisheng Cui

    IPC: B24D3/00 ,  B24D3/02 ,  B24D11/00 ,  B24D18/00 ,  C09K3/14 ,  C09G1/02

    CPC classification number: C09G1/02

    Abstract: The present invention provides a cerium oxide based composite polishing powder and a preparation method thereof. The polishing powder contains the element magnesium in an amount of 0.005 wt %-5 wt % to magnesium oxide meter. The preparation method includes: (1) uniformly mixing a salt solution containing cerium serving as the main component of the polishing powder; (2) uniformly mixing a precipitating agent of an aqueous magnesium bicarbonate solution with the mixed solution prepared in step (1) to obtain a slurry; (3) aging the slurry prepared in step (2) for 0-48 h while the temperature of the slurry is kept at 30-90 degrees centigrade, and filtering the aged slurry to obtain the precursor powder of the polishing powder; (4) calcinating the precursor powder at 600-1000 degrees centigrade, then dispersing and separating the calcinated precursor powder to obtain the polishing powder. The present invention improves the polishing performance and the suspension performance of polishing powder.

    Method of recovering rare earth aluminum and silicon from rare earth-containing aluminum-silicon scraps
    6.
    发明授权
    Method of recovering rare earth aluminum and silicon from rare earth-containing aluminum-silicon scraps 有权

    公开(公告)号：US10280482B2

    公开(公告)日：2019-05-07

    申请号：US15736874

    申请日：2016-06-16

    Applicant: GRIREM ADVANCED MATERIALS CO., LTD.

    Inventor： Xiaowei Huang ,  Yang Xu ,  Jinyu Wang ,  Liangshi Wang ,  Zongyu Feng ,  Dali Cui ,  Zhiqi Long ,  Xu Sun ,  Na Zhao

    IPC: C22B7/00 ,  C01F7/04 ,  C01F7/06 ,  C01F7/22 ,  C01F7/24 ,  C01F7/26 ,  C01F17/00 ,  C22B21/00 ,  C22B59/00 ,  C22B3/44

    Abstract: Disclosed is a method of recovering rare earth, aluminum and silicon from rare earth-containing aluminum-silicon scrap. The method comprises: S1, acid-leaching the rare earth-containing aluminum-silicon scrap with an inorganic acid aqueous solution to obtain a silicon-rich slag and acid leached solution containing rare earth and aluminum element; S2, adding an alkaline substance into the acid leached solution containing the rare earth and aluminum element and controlling a PH value of the acid leaching solution between 3.5 to 5.2, performing a solid-liquid separation to obtain a aluminum hydroxide-containing precipitate and a rare earth-containing solution filter; S3, reacting the aluminum hydroxide containing precipitate with sodium hydroxide to obtain sodium metaaluminate solution and aluminum-silicon slag, and preparing a rare earth compound product with the rare earth-containing filtrate. The method dissolves an the aluminum and the rare earth with the acid and then via step wise alkaline conversion, convert aluminum icons to an aluminum hydroxide precipitate separated from rare earth ions, and then adds excessive amounts of sodium hydroxide to convert the aluminum hydroxide to a sodium metaaluminate solution, thereby realizing high-efficiency recovery of both rare earth and aluminum while significantly reducing the consumption of the sodium hydroxide and thus recovery cost.

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