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    • 31. 发明申请
    • TITANIUM DIOXIDE FINISHING PROCESS
    • 二氧化钛精加工工艺
    • US20070095253A1
    • 2007-05-03
    • US11263702
    • 2005-11-01
    • Russell DiemerAlan EatonNarayanan SubramanianStephen TaylorGEORGE SCHURRDAVID ZIMMERMAN
    • Russell DiemerAlan EatonNarayanan SubramanianStephen TaylorGEORGE SCHURRDAVID ZIMMERMAN
    • C09C1/36C01G23/047
    • C01G23/07B82Y30/00C01G23/075C01G23/08C01P2004/62C01P2004/64C01P2006/80C09C1/3607
    • This disclosure relates to process for producing titanium dioxide (TiO2) pigments, comprising the following steps: a) oxidizing a mixture of titanium tetrahalide and a rutile forming agent, such as aluminum halide, present in the vapor phase and in the presence of a nucleant to form a gaseous suspension comprising titanium dioxide particles; b) passing the gaseous suspension to a cooling conduit; c) introducing scouring material into the cooling conduit; wherein the particles of the scouring material have a diameter in the range of about 0.25 mm to about 12.7 mm; d) separating the vapor phase to form a powder comprising the titanium dioxide particles and the scouring material; and e) simultaneously subjecting the powder to substantially uniform heating at a temperature of about 300° C. to about 600° C. and reducing the size of the titanium dioxide particles and the particles of the scouring material in the powder to a mean particle size of about 50 nm to about 1000 nm, whereby the titanium dioxide pigment has a chloride content of less than about 500 ppm. The so treated powder may have a residual free chlorine content of less than about 1 ppm.
    • 本公开涉及生产二氧化钛(TiO 2)颜料的方法,包括以下步骤:a)氧化四卤化钛和存在于蒸气中的金红石形成剂如卤化铝的混合物 并在成核剂存在下形成包含二氧化钛颗粒的气态悬浮液; b)将气态悬浮液通过冷却管道; c)将精练材料引入冷却管道; 其中所述精练材料的颗粒的直径在约0.25mm至约12.7mm的范围内; d)分离气相以形成包含二氧化钛颗粒和洗涤材料的粉末; 和e)在约300℃至约600℃的温度下同时对粉末进行基本上均匀的加热,并将粉末中二氧化钛颗粒和擦洗材料的颗粒的尺寸减小到平均粒度 为约50nm至约1000nm,由此二氧化钛颜料的氯化物含量小于约500ppm。 如此处理的粉末可具有小于约1ppm的残余游离氯含量。
    • 34. 发明申请
    • Synthetic multi-aperture radar technology
    • 合成多孔径雷达技术
    • US20060170585A1
    • 2006-08-03
    • US11339532
    • 2006-01-26
    • Herbert StankwitzStephen Taylor
    • Herbert StankwitzStephen Taylor
    • G01S13/90
    • G01S13/9035G01S7/282G01S13/22
    • Systems and methods of improving synthetic aperture radar (SAR) system are disclosed. In particular, an example system includes a radar signal radiator configured to transmit radar signal pulses that have a partial bandwidth at a regular interval. The partial bandwidth is a portion of a full bandwidth that said radar signal radiator is designed to generate. The example system also includes a receiver configured to receive radar signals returned in response to said transmitted radar signal pulses, and a processor configured to extrapolate said received signals to said full bandwidth, to thereby create high resolution SAR images.
    • 公开了改进合成孔径雷达(SAR)系统的系统和方法。 特别地,示例系统包括被配置为以规则的间隔传输具有部分带宽的雷达信号脉冲的雷达信号辐射器。 部分带宽是所述雷达信号辐射器被设计为产生的全带宽的一部分。 示例系统还包括被配置为接收响应于所述发送的雷达信号脉冲而返回的雷达信号的接收器,以及被配置为将所述接收信号外推到所述全带宽的处理器,从而产生高分辨率SAR图像。