Process for preparing a refractory powder from spent contact masses
issuing from the production of silanes, and to refactory products
obtained therefrom
    62.
    发明授权
    Process for preparing a refractory powder from spent contact masses issuing from the production of silanes, and to refactory products obtained therefrom 失效
    从生产硅烷产生的废接触块制备耐火粉末的方法以及由其获得的反应产物

    公开(公告)号:US5783509A

    公开(公告)日:1998-07-21

    申请号:US807699

    申请日:1997-02-28

    申请人: Fernanda Manier

    发明人: Fernanda Manier

    摘要: The invention relates to a process for the preparation, by nitriding, of a refractory powder containing more than 40% of silicon nitride from spent contact masses issuing from chlorosilane synthesis. The process involves mixing with the copper-free spent mass, silicon or a silicon-rich alloy and optionally a refractory compound to adjust the non-oxidised silicon content to a predetermined value >30%, heating the mixture in a nitrogen atmosphere to trigger the exothermic nitriding reaction, then reducing the product obtained to powder. The refractory powder thus obtained can be mixed with an organic binder to produce taphole blocking masses for blast furnaces or electric furnaces for pyrometallurgy.

    摘要翻译: 本发明涉及一种通过氮化制备从氯硅烷合成发出的废接触物质中含有40%以上的氮化硅的耐火材料粉末的方法。 该方法包括与无铜废料,硅或富硅合金以及任选的耐火化合物混合,以将非氧化硅含量调节至预定值> 30%,在氮气气氛中加热混合物以触发 放热氮化反应,然后将得到的产物还原成粉末。 这样获得的耐火材料粉末可以与有机粘合剂混合,以产生用于高炉或用于火法冶金的电炉的出渣孔块。

    Process for preparing aluminum nitride powder
    66.
    发明授权
    Process for preparing aluminum nitride powder 失效
    氮化铝粉末制备方法

    公开(公告)号:US4680278A

    公开(公告)日:1987-07-14

    申请号:US812012

    申请日:1985-12-23

    摘要: A process for preparing aluminum nitride powder, which comprises mixing (i) aluminum hydroxide powder, (ii) carbon powder or a substance capable of forming carbon powder by heating and (iii) at least one of additives selected from the group consisting of aluminum nitride powder, silicon nitride powder, silicon carbide powder and powder of substances capable of forming the powder corresponding to these powders, and baking the mixture thus obtained in a non-oxidative atmosphere containing nitrogen. The process is useful for preparing aluminum nitride powder having small particle size and small particle size distribution and also having a uniform shape of particles, at a lower temperature and in a shorter period of time.

    摘要翻译: 一种制备氮化铝粉末的方法,其包括将(i)氢氧化铝粉末,(ii)碳粉末或能够通过加热形成碳粉末的物质和(iii)至少一种选自氮化铝 粉末,氮化硅粉末,碳化硅粉末和能够形成与这些粉末相应的粉末的物质的粉末,并在由氮气的非氧化性气氛中焙烧得到的混合物。 该方法在较低的温度和更短的时间内可用于制备具有小粒度和小粒度分布的氮化铝粉末,并且还具有均匀的颗粒形状。

    Process for producing beta'-silicon aluminum oxynitride (B'-SiAlON)
    67.
    发明授权
    Process for producing beta'-silicon aluminum oxynitride (B'-SiAlON) 失效
    生产β-硅氮氧化铝(B'-SiAlON)的方法

    公开(公告)号:US4511666A

    公开(公告)日:1985-04-16

    申请号:US450337

    申请日:1982-12-16

    CPC分类号: C04B35/597 C01B21/0826

    摘要: A process for producing a refractory material comprising essentially beta'-SiAlON wherein initial reactants comprising Al.sub.2 O.sub.3 and SiO.sub.2 are nitrided for sufficient times and temperatures to convert at least a portion of the initial reactants to at least a portion of effective reactants and the effective reactants are then further heated to produce an essentially beta'-SiAlON refractory material.

    摘要翻译: 制备基本上包含Al-SiAlON的耐火材料的方法,其中将包含Al 2 O 3和SiO 2的初始反应物渗氮足够的时间和温度以将至少一部分初始反应物转化为至少一部分有效反应物,并且有效反应物为 然后进一步加热以产生基本上β'-SiAlON耐火材料。

    Process for producing a solid solution of aluminum oxide in silicon
nitride
    68.
    发明授权
    Process for producing a solid solution of aluminum oxide in silicon nitride 失效
    在氮化硅中生产氧化铝固溶体的方法

    公开(公告)号:US3960581A

    公开(公告)日:1976-06-01

    申请号:US465222

    申请日:1974-04-29

    申请人: Ivan B. Cutler

    发明人: Ivan B. Cutler

    CPC分类号: C04B35/597 C01B21/0826

    摘要: A method of producing a sinterable refractory material having a low coefficient of thermal expansion and comprising essentially a dispersion of aluminum oxide throughout a silicon nitride matrix, herein called SIALON. The process includes obtaining aluminum and silicon from generally readily available raw material sources.

    摘要翻译: 一种制造具有低热膨胀系数的可烧结耐火材料的方法,并且基本上包括氧化铝在整个氮化硅基体中的分散体,这里称为SIALON。 该方法包括从通常容易获得的原料来源获得铝和硅。