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    • 6. 发明授权
    • Methods for the separation of compounds from acidic aqueous solutions
    • 从酸性水溶液中分离化合物的方法
    • US06238462B1
    • 2001-05-29
    • US09353202
    • 1999-07-14
    • Steven A. DunwoodyLei JiangDale R. PowersFreddie G. Prince
    • Steven A. DunwoodyLei JiangDale R. PowersFreddie G. Prince
    • B01D5314
    • B01D53/64C03B19/1446C03B37/0144C03B37/01846C03B2201/31
    • A method is disclosed for recovering germanium from a gaseous mixture which includes a germanium-containing compound in vapor or particulate form, acid in vapor form, and water vapor. The gaseous mixture is contacted with a liquid containing water under conditions effective to dissolve the germanium-containing compound in the liquid. The acidity of the resulting liquid mixture is increased under conditions effective to vaporize the germanium-containing compound. The vaporized germanium-containing compound is contacted with one or more aqueous solutions under conditions effective to dissolve and precipitate the germanium-containing compound in at least one of the one or more aqueous solutions, and the resulting precipitate is separated from the at least one of the one or more aqueous solutions. The methods described herein are particularly well suited for recovering germanium from the waste gases produced during optical waveguide manufacturing processes. Germanium recovered by this method can thereafter be used in the production of semiconductors, optical waveguide fibers and optical components.
    • 公开了一种用于从气体混合物中回收锗的方法,所述气体混合物包括蒸气或颗粒形式的含锗化合物,蒸汽形式的含酸化合物和水蒸气。 在有效溶解含锗化合物的液体中的条件下,气态混合物与含有液体的液体接触。 所得液体混合物的酸度在有效蒸发含锗化合物的条件下增加。 蒸发的含锗化合物在有效溶解和沉淀至少一种一种或多种水溶液中的含锗化合物的条件下与一种或多种水溶液接触,并将所得沉淀物从至少一种 一种或多种水溶液。 本文描述的方法特别适用于从光波导制造过程中产生的废气中回收锗。 然后通过该方法回收的锗可以用于半导体,光波导纤维和光学部件的制造。
    • 8. 发明申请
    • Manufacturing method of optical waveguide
    • 光波导的制造方法
    • US20020028300A1
    • 2002-03-07
    • US09852139
    • 2001-05-09
    • Takuya KomatsuKazutaka NaraKazuhisa Kashihara
    • B05D005/06B05D003/08
    • C03B19/1446C23C16/4412C23C16/453Y02P40/57
    • The invention provides a manufacturing method of an optical waveguide able to precisely manufacture the optical waveguide having a waveguide construction as designed, and improve yield as one example. In this manufacturing method, a hydrolysis reaction of raw material gas of glass is caused within an oxygen-hydrogen flame by flowing the raw material gas, oxygen gas and hydrogen gas from a burner, and an optical waveguide forming area is formed by depositing glass particulates on a substrate. The oxygen-hydrogen flame is injected toward the optical waveguide forming area in a slanting direction on the substrate. An exhaust pipe is arranged on the discharging side of an injecting flow. Surplus glass particulates unattached to the optical waveguide forming area are sucked and exhausted by the exhaust pipe. The surplus glass particulates are sucked and exhausted by the exhaust pipe by inclining a suction port side of the exhaust pipe by an angle within a range from 5null to 30null with respect to a face of the substrate.
    • 本发明提供一种光波导的制造方法,其能够精确地制造具有设计的波导结构的光波导,并且作为一个示例提高产量。 在该制造方法中,通过使来自燃烧器的原料气体,氧气和氢气流动而在氧 - 氢火焰内引起玻璃原料气体的水解反应,并且通过沉积玻璃微粒形成光波导形成区域 在基板上。 在基板上沿着倾斜方向朝向光波导形成区域注入氧 - 氢火焰。 排气管布置在喷射流的排放侧。 未连接到光波导形成区域的剩余玻璃微粒被排气管吸引并排出。 通过使排气管的吸入口侧相对于基板的表面倾斜5°〜30°的范围内的角度,将多余的玻璃微粒吸引排气。