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    • 4. 发明授权
    • Method for preparing a soda-lime-silica glass basic formulation and a method for extracting aluminum from coal ash for co-production of glass
    • 制备钠钙硅玻璃碱性配方的方法以及从煤灰中提取铝用于共同生产玻璃的方法
    • US09517965B2
    • 2016-12-13
    • US14647739
    • 2012-11-27
    • Shenhua Group Corporation LimitedNational Institute of Clean-and-Low-Carbon Energy
    • Qi SunLijun ZhaoBaodong WangXiaoting Liu
    • C03B5/00C03C1/00C03C3/087C03C3/062C03C3/097
    • C03C1/002C03C1/006C03C3/062C03C3/087C03C3/097
    • The present invention discloses a method for preparing a soda-lime-silica glass basic formulation and a method for producing soda-lime-silica glass, comprising the steps of: pre-desiliconizing silicon-containing powdery industrial waste with a sodium hydroxide solution; introducing carbon dioxide for carbonation decomposition, and filtering to obtain a silicic acid precipitate and a sodium carbonate solution; drying the silicic acid precipitate to obtain silicon dioxide; adding lime milk into the filtered sodium carbonate for causticization, and filtering to obtain a sodium hydroxide solution and a calcium carbonate precipitate; drying the calcium carbonate precipitate; using said silicon dioxide and part of the calcium carbonate and adding sodium oxide. The present invention further discloses a method for extracting aluminum from coal ash for co-production of soda lime glass, which uses silicon dioxide obtained from alkali dissolution and desiliconization of coal ash and calcium carbonate generated from causticization as main raw materials. The method for extracting aluminum from coal ash for co-production of soda lime glass according to the present invention integrates and optimizes a process of extracting aluminum from the coal ash, has a high material and energy utilization rate, good quality of co-product glass, and high added value, and can greatly improve economical efficiency of aluminum extraction of coal ash.
    • 本发明公开了一种制备钠钙石英玻璃碱性配方的方法及其制备方法,其特征在于包括以下步骤:用氢氧化钠溶液预硅化含硅粉末工业废料; 引入二氧化碳进行碳酸化分解,过滤得到硅酸沉淀物和碳酸钠溶液; 干燥硅酸沉淀物,得到二氧化硅; 将白砂糖加入过滤的碳酸钠中进行苛化处理,过滤得到氢氧化钠溶液和碳酸钙沉淀物; 干燥碳酸钙沉淀物; 使用所述二氧化硅和一部分碳酸钙并加入氧化钠。 本发明还公开了一种从用于共同生产钠钙玻璃的煤灰中提取铝的方法,该方法使用从碱溶解和硅酸脱硅得到的二氧化硅和由苛性碱生成的碳酸钙作为主要原料。 根据本发明的用于共同生产钠钙玻璃的煤灰提取铝的方法整合并优化从煤灰中提取铝的方法,具有高的材料和能量利用率,良品质的共同产品玻璃 ,附加值高,可大大提高煤灰铝提取的经济效益。
    • 9. 发明授权
    • Method for the production of a composite body from a basic body of opaque quartz glass and a tight sealing layer
    • 从不透明石英玻璃的基体和密封层制造复合体的方法
    • US08408027B2
    • 2013-04-02
    • US12452413
    • 2008-06-18
    • Waltraud WerdeckerJohann Leist
    • Waltraud WerdeckerJohann Leist
    • C03C17/02
    • C03C1/006C03B19/06C03B19/066C03B20/00C03C1/008C03C3/06C03C17/02C03C2203/22C03C2218/11
    • To optimize a known method for producing a composite body from a basic body of opaque quartz glass and a dense sealing layer, in such a way that the basic body can be provided with the dense sealing layer without any significant changes and deformations in the opaque material being noticed, the invention suggests a method comprising the following steps: (a) producing the basic body by using a first slip which contains larger amorphous SiO2 particles; (b) providing a second slip which contains smaller amorphous SiO2 particles and the composition of which differs from that of the first slip at least in that it contains SiO2 nanoparticles in the range between 0.2% by wt. to 15% by wt. and which is distinguished by a relatively low vitrification temperature; (d) producing a slip layer from the second slip on a surface of the basic body, drying the slip layer, and (e) subsequently vitrifying the slip layer with formation of the dense sealing layer.
    • 为了优化用于从不透明石英玻璃和致密密封层的基体制造复合体的已知方法,使得基体可以设置有致密的密封层,而在不透明材料中没有任何显着变化和变形 本发明提出了一种方法,包括以下步骤:(a)通过使用包含较大的非晶SiO 2颗粒的第一滑移来生产基体; (b)提供包含较小的非晶SiO 2颗粒的第二滑移,其组成与第一滑移的组成不同,至少其中含有0.2重量%范围内的SiO 2纳米颗粒。 至15重量% 并且由相对低的玻璃化温度区分; (d)从基体表面上的第二滑移层产生滑动层,干燥滑动层,(e)随后形成致密密封层玻璃化滑动层。