Metal extraction from various chalcogenide minerals through interaction with separate electric fields and magnetic fields supplied by electromagnetic energy
    2.
    发明授权
    Metal extraction from various chalcogenide minerals through interaction with separate electric fields and magnetic fields supplied by electromagnetic energy 失效
    通过与电磁能提供的分离电场和磁场的相互作用,从各种硫属元素矿物中提取金属

    公开(公告)号:US07850759B2

    公开(公告)日:2010-12-14

    申请号:US12335398

    申请日:2008-12-15

    IPC分类号: C22B3/22 C22B11/00

    摘要: Multimode and single mode microwave energy is used to improve the extraction of metals from chalcogenide minerals. In one process microwave energy is used to comminute the mineral after which the mineral is reacted with acid in the presence of microwave energy. Following treatment the mineral is removed and the extracted metal is recovered from the acid. In another process chalcogenide minerals are exposed to the magnetic field maximum or the electrical field maximum of a single mode electromagnetic energy. This treatment causes a phase separation between metals and silicates within the mineral leaving metal rich regions from which the metal can be readily recovered by traditional methods.

    摘要翻译: 多模和单模微波能量用于改善硫属元素矿物中金属的提取。 在一个过程中,微波能量用于粉碎矿物,矿物在微波能量存在下与酸反应。 处理后,除去矿物质,从酸中回收提取的金属。 在另一种方法中,硫族化物矿物暴露于单模电磁能量的最大磁场或电场最大值。 这种处理导致矿物中金属和硅酸盐之间的相分离,离开富含金属的区域,通过传统方法可以容易地回收金属。

    Highly dense cordierite and method of manufacturing same
    3.
    发明授权
    Highly dense cordierite and method of manufacturing same 失效
    高密度堇青石及其制造方法相同

    公开(公告)号:US5030592A

    公开(公告)日:1991-07-09

    申请号:US427407

    申请日:1989-10-26

    IPC分类号: C03C10/08 C04B35/195

    摘要: Compositionally triphasic nanocomposite gel is made by mixing two or more sols of ceramic precursor oxides. Such gel is then dried and ground to a fine powder which is pressed into compact bodies. The compact bodies are thereafter fired in a sintering oven at from 1100.degree. C. to 1400.degree. C. and, aided by the heat of reaction of the two or more nono gel powders, the (heterogeneous) mixture of such powders crystallizes into a homogeneous crystalline ceramic of .alpha.-cordierite at up to 100% of theoretical density. Thus, novel method of manufacture and novel ceramic end-product are provided.

    摘要翻译: 通过混合两种或更多种陶瓷前体氧化物溶胶制备组成三相纳米复合凝胶。 然后将这种凝胶干燥并研磨成细粉末,将其压制成紧凑体。 紧凑体然后在1100℃至1400℃的烧结炉中焙烧,并且由两种或多种非凝胶粉末的反应热辅助,这种粉末的(非均质)混合物结晶成均匀的 最高达理论密度的100%的α - 石墨的结晶陶瓷。 因此,提供了新的制造方法和新的陶瓷终产物。

    Low expansion ceramic material
    9.
    发明授权
    Low expansion ceramic material 失效
    低膨胀陶瓷材料

    公开(公告)号:US4675302A

    公开(公告)日:1987-06-23

    申请号:US616356

    申请日:1984-06-01

    IPC分类号: C04B35/447 G02B1/10 C04B35/02

    摘要: A low expansion ceramic composition is represented by the formula Ca.sub.0.5 Ti.sub.2 P.sub.3 O.sub.12 in which up to 100 percent of the Ca is replaced by one or more of the other alkaline earth metals and alkali metals, the alkali metals being selected from the group consisting of Na, Li, K and combinations thereof and substituted in the ratio of two units of alkali metal for each unit of Ca replaced. Up to 100 percent of the Ti is replaced by one or more members selected from the group consisting of Zr, Sn, Nb, Ta and Cr. For each unit of Cr replacement an approximately equal unit of alkali metal is added. For each unit of Nb and/or Ta replacement an approximately equal unit of Na and/or K replaces a unit of Ca. Up to 100 percent of the P may be replaced by Si and/or S. The total of the amounts of Ca, other alkaline earth metals, Li, K, Ti, Sn, Nb, Ta and Cr is greater then zero. Preferably up to 100 percent of the Ca is replaced by Na, and up to 100 percent of the Ti is replaced by Zr or NaCr. The ceramic composition is especially suitable for optically reflecting films.

    摘要翻译: 低膨胀陶瓷组合物由式Ca 0.5 Ti 2 P 3 O 12表示,其中至多100%的Ca被一种或多种其它碱土金属和碱金属代替,碱金属选自Na, Li,K及其组合,并以每单位Ca取代的两单位碱金属的比例进行取代。 高达100%的Ti被选自由Zr,Sn,Nb,Ta和Cr组成的组中的一种或多种所取代。 对于每个单位的Cr替换,添加大约相等的碱金属单位。 对于Nb和/或Ta替代的每个单位,大约相等单位的Na和/或K代替Ca的单位。 高达100%的P可被Si和/或S替代.Ca,其他碱土金属,Li,K,Ti,Sn,Nb,Ta和Cr的量的总和大于零。 优选高达100%的Ca被Na替代,并且至多100%的Ti被Zr或NaCr代替。 陶瓷组合物特别适用于光反射膜。

    Method for decolorizing diamonds
    10.
    发明授权
    Method for decolorizing diamonds 有权
    钻石脱色方法

    公开(公告)号:US08110171B1

    公开(公告)日:2012-02-07

    申请号:US11599865

    申请日:2006-11-15

    摘要: A method for changing the color of a diamond. The method comprises placing the diamond in a substrate holder in a chemical vapor deposition (CVD) equipment. The CVD equipment is maintained at pressures near or below atmospheric pressure. A mixture of gases including hydrogen is introduced inside the CVD equipment. The introduced mixture of gases is energized by using microwave radiation to heat the diamond to temperatures above 1400° C. Then, the diamond is maintained at temperatures above 1400° C. for few seconds to few hours.

    摘要翻译: 一种改变钻石颜色的方法。 该方法包括将金刚石放置在化学气相沉积(CVD)设备中的衬底保持器中。 CVD设备保持在接近或低于大气压的压力。 包含氢气的气体混合物被引入CVD设备内。 引入的气体混合物通过使用微波辐射来加热金刚石至1400℃以上的温度。然后,将金刚石保持在高于1400℃的温度下几秒至几小时。