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    • 6. 发明授权
    • White cement production
    • 白水泥生产
    • US4560412A
    • 1985-12-24
    • US592816
    • 1984-03-23
    • Paul Weber
    • Paul Weber
    • C04B7/43C04B7/08
    • C04B7/43
    • The invention relates to a method of producing white cement in which a reducing atmosphere is maintained over the entire length of a rotary kiln and precalcination takes place in a preheater supplied with heat exhaust gases from the kiln. Additional fuel is delivered to the preheater in such quantity that the CO contained in the kiln exhaust gases is burnt. As a result the essential reduction processes take place reliably in the rotary kiln without any problems occurring in the preheater as a result of a high CO content.
    • 本发明涉及一种生产白水泥的方法,其中在回转窑的整个长度上保持还原气氛,并且在从窑炉供应热废气的预热器中进行煅烧。 额外的燃料以这样的量输送到预热器,使得窑尾废气中的CO被燃烧。 因此,由于CO含量高,因此在回转窑中可靠地进行必要的还原处理,而不会在预热器中发生任何问题。
    • 9. 发明授权
    • Producing laser light of different wavelengths
    • 生产不同波长的激光
    • US06215804B1
    • 2001-04-10
    • US08923034
    • 1997-09-03
    • Olof SahlénPaul Weber
    • Olof SahlénPaul Weber
    • H01S5026
    • H01S5/4031G02B2006/12121G02B2006/12142H01S5/0265H01S5/0612H01S5/0625H01S5/06258H01S5/12H01S5/4087
    • In a tunable laser device a plurality of basically identical lasers are arranged adjacent to each other in a line or row on a common substrate. The lasers can be DFB-type and they have different emission wavelengths, obtained from e.g. different pitches of gratings which define the wavelengths of the respective lasers. The lasers can be activated to emit light independently of each other by supplying electrical current to contacts located on the top sides of the lasers. When a laser is activated, the other lasers are biased, so that lasers located at one of side of the active laser will be transparent to the emitted light, which can then travel from the lasers through an electrooptic modulator, and the lasers located at the other side will absorb the light. By controlling the temperature the wavelength of emitted light can be finely adjusted. Such a laser device has a compact structure, is fairly insensitive to variations of the used drive currents and can in simple way be adjusted to different operating conditions and be compensated for aging effects.
    • 在可调激光器件中,多个基本相同的激光器被布置在公共衬底上的一行或一行中彼此相邻。 激光器可以是DFB型,并且它们具有不同的发射波长,从例如, 限定相应激光器的波长的光栅的不同间距。 激光器可以通过向位于激光器顶侧的触点提供电流而被激活以彼此独立地发光。 当激光器被激活时,其它激光器被偏置,使得位于有源激光器的一侧的激光器对于发射的光将是透明的,其然后可以从激光器通过电光调制器传播,并且位于 另一边会吸收光线。 通过控制温度,可以精细地调节发射光的波长。 这种激光装置具有紧凑的结构,对所使用的驱动电流的变化相当不敏感,并且可以以简单的方式调整到不同的操作条件并补偿老化效应。