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    • 1. 发明授权
    • Process for producing crystalline sodium silicates having a layered
structure
    • 具有层状结构的结晶硅酸钠的制造方法
    • US5236682A
    • 1993-08-17
    • US846758
    • 1992-03-05
    • Gunther SchimmelMichael KotzianHerbert PanterAlexander Tapper
    • Gunther SchimmelMichael KotzianHerbert PanterAlexander Tapper
    • C01B33/32C01B33/38
    • C01B33/325C01B33/32C01B33/38
    • For producing crystalline sodium silicates having a layer structure, an SiO.sub.2 /Na.sub.2 O molar ratio of (1.9 to 2.1):1 and a water content of less than 0.3% by weight from a waterglass solution containing at least 20% by weight of solids, the waterglass solution is obtained by reacting quartz sand with sodium hydroxide solution at an SiO.sub.2 /Na.sub.2 O molar ratio of (2.0 to 2.3):1 at temperatures of 180.degree. to 240.degree. C. and pressures of 10 to 30 bar. This waterglass solution is treated in a spray-drying zone with hot air at 200.degree. to 300.degree. C. for a residence time of 10 to 25 seconds and at a temperature of the exit gas leaving the spray-drying zone of 90.degree. to 130.degree. C., to form a pulverulent amorphous sodium silicate having a water content (determined as the loss on ignition at 700.degree. C.) of 15 to 23% by weight and a bulk density of more than 300 g/l. The pulverulent, amorphous, water-containing sodium silicate is introduced into an obliquely arranged rotary kiln fitted with devices for moving solids and treated therein with flue gas in countercurrent at temperatures from more than 500.degree. up to 850.degree. C. for 1 to 60 minutes to form crystalline soidium silicate. The rotary kiln is here insulated in such a way that its outside wall temperature is less than 60.degree. C. Finally, the crystalline sodium silicate emerging from the rotary kiln is comminuted by means of a mechanical crusher to grain sizes of 0.1 to 12 mm.
    • 为了生产具有层状结构的结晶硅酸钠,SiO 2 / Na 2 O摩尔比为(1.9-2.1):1,水含量小于含有至少20重量%固体的水玻璃溶液的0.3重量% 通过使SiO 2 / Na 2 O摩尔比为(2.0〜2.3):1的石英砂与氢氧化钠溶液在180〜240℃的温度和10〜30巴的压力下反应获得水玻璃溶液。 该水玻璃溶液在200℃至300℃的热空气的喷雾干燥区中处理,停留时间为10至25秒,并且在离开喷雾干燥区的出口气体的温度为90°至130° 以形成具有15至23重量%的含水量(以700℃测定的点火损失确定)的粉末状无定形硅酸钠,堆积密度大于300g / l。 将粉末状,无定形含水硅酸钠引入倾斜布置的回转窑中,该回转窑装有固体移动装置,并在大于500℃至850℃的温度下逆流处理烟气1至60分钟 以形成硅酸的结晶硅酸盐。 回转窑的外壁温度低于60℃,最后将回转窑中出现的结晶硅酸钠粉碎成0.1〜12mm的粒度粉碎机。
    • 4. 发明授权
    • Process for producing amorphous sodium silicate
    • 无定形硅酸钠的制备方法
    • US5229095A
    • 1993-07-20
    • US839008
    • 1992-02-14
    • Gunther SchimmelMichael KotzianHerbert PanterAlexander Tapper
    • Gunther SchimmelMichael KotzianHerbert PanterAlexander Tapper
    • C01B33/32
    • C01B33/325C01B33/32
    • A process for producing amorphous sodium silicates having a water content of 0.3 to 6% by weight and an SiO.sub.2 /Na.sub.2 O molar ratio of (1.9 to 2.8) : 1 from a waterglass solution containing at least 20% by weight of solids, the water-glass solution is obtained by reacting quartz sand with sodium hydroxide solution at an SiO.sub.2 /Na.sub.2 O molar ratio of (2.0 to 2.8) : 1 at temperatures of 180 to 240.degree. C. and pressures of 10 to 30 bar. This waterglass solution is treated in a spray-drying zone with hot air at 200 to 300.degree. C. for a residence time of 10 to 20 seconds and at a temperature of the exit gas leaving the spray-drying zone of 90.degree. to 130.degree. C., to form a pulverulent amorphous sodium silicate having a water content (determined as the loss on ignition at 700.degree. C.) of 15 to 23% by weight and a bulk density of more than 300 g/l. The pulverulent sodium silicate is introduced into an obliquely arranged rotary kiln fitted with devices for moving solids and treated therein with flue gas in countercurrent at temperatures from 250.degree. up to 500.degree. C. for 1 to 60 minutes. The rotary kiln is here insulated in such a way that its outside wall temperature is less than 60.degree. C. Finally, the amorphous sodium silicate emerging from the rotary kiln is comminuted by means of a mechanical crusher to grain sizes of 0.1 to 12 mm.
    • 从含有至少20重量%固体的水玻璃溶液制备水含量为0.3-6重量%和SiO 2 / Na 2 O摩尔比为(1.9至2.8):1的无定形硅酸钠的方法, 通过在180-240℃的温度和10至30巴的压力下使石英砂与氢氧化钠溶液以(2.0至2.8):1的SiO 2 / Na 2 O摩尔比反应获得玻璃溶液。 该水玻璃溶液在200〜300℃的热风喷雾干燥区中处理10〜20秒的停留时间,离开喷雾干燥区的出口气体的温度为90〜130℃ 以形成15〜23重量%的含水量(在700℃下测定为灼烧损失)的粉末状无定形硅酸钠,堆积密度大于300g / l。 将粉状硅酸钠引入倾斜布置的旋转窑中,该回转窑装有用于移动固体的装置,并在250℃至500℃的温度下逆流处理烟道气1至60分钟。 回转窑的外壁温度低于60℃,最后将回转窑出现的无定形硅酸钠粉碎成0.1〜12mm的粒径。
    • 5. 发明授权
    • Electrolytic cell
    • 电解池
    • US4402812A
    • 1983-09-06
    • US359502
    • 1982-03-18
    • Herbert PanterHermann KleinGerhard NolteEberhard PreislerHans-Werner StephanGunter Reichert
    • Herbert PanterHermann KleinGerhard NolteEberhard PreislerHans-Werner StephanGunter Reichert
    • C25B1/21C25B9/00C25B9/04C25C7/00C25C3/04C25C3/16
    • C25C7/00C25B9/00C25B9/04
    • The disclosure provides an electrolytic cell sealed in gas-tight and liquid-tight fashion. The cell is comprised of a box-shaped cell tank open at its top and provided with at least one intake duct, at least one overflow duct and at least one discharge duct. A cover is placed on the cell tank and two opposed flanges receiving electrode supporting frames are secured to the inside of the cell tank near the upper end thereof. A chemically resistant and electrically insulating coating is applied to the inside of the cover and cell tank and a plurality of semi-circular recessed grooves spaced apart from each other are formed in the upper rim portion of at least one of the side walls of the cell tank, the recessed grooves receiving semi-circular current beams projecting outwardly. A first elastic packing structurally conformed to the upper rim portion of the cell tank including the recessed grooves is placed thereon and a second elastic packing arranged at the underside of the cover co-operates with the upper side of the current beam and the first elastic packing whereby the electrolytic cell becomes gas tightly sealed. A main current rail is arranged to run outside the cell tank laterally with respect thereto and so as to be spaced therefrom, the rail providing large contact areas supporting the projecting end of the current beams. The electrode supporting frames and the current beams are electrically conducting inside the electrolytic ce
    • 本公开提供了以气密和液密方式密封的电解池。 电池由在其顶部开口设置有至少一个进气管道,至少一个溢流管道和至少一个排放管道的盒状电池槽组成。 将盖子放置在电池槽上,并且两个相对的接收电极支撑框架的凸缘在其上端附近固定到电池槽的内部。 在盖和电池槽的内部施加耐化学性和电绝缘的涂层,并且在电池的至少一个侧壁的上边缘部分中形成有彼此间隔开的多个半圆形凹槽 槽中的凹槽接收向外突出的半圆形电流束。 在其上放置结构上符合包括凹槽的电池槽的上边缘部分的第一弹性包装,并且布置在盖的下侧的第二弹性衬垫与电流梁的上侧配合,并且第一弹性包装 由此电解槽变得气密密封。 一个