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    Processes for producing improved wear resistant coatings on zirconium shapes
    4.
    发明授权
    Processes for producing improved wear resistant coatings on zirconium shapes 失效
    用于在锆形状上生产改进的耐磨涂层的方法

    公开(公告)号：US4671824A

    公开(公告)日：1987-06-09

    申请号：US810098

    申请日：1985-12-18

    申请人： John C. Haygarth

    发明人： John C. Haygarth

    IPC分类号： C23C8/42 ,  C23C22/70

    CPC分类号： C23C22/70 ,  C23C8/42

    摘要： Process for producing zirconium oxide blue-black coatings on zirconium alloy substrates by treating said alloys with molten salts containing small amounts of oxidizing compounds. The molten salts are sodium cyanide and combinations of sodium chloride and potassium chloride.

    摘要翻译： 通过用含有少量氧化性化合物的熔融盐处理所述合金，在锆合金基材上生产氧化锆蓝黑色涂层的方法。 熔融盐是氰化钠和氯化钠和氯化钾的组合。

    Zirconium-hafnium separation and purification process
    5.
    发明授权
    Zirconium-hafnium separation and purification process 失效
    锆铪分离纯化工艺

    公开(公告)号：US5160482A

    公开(公告)日：1992-11-03

    申请号：US318161

    申请日：1989-03-02

    申请人： Kenneth C. Ash ,  William A. Crocker ,  John C. Haygarth ,  David R. Lee ,  Donald Morris ,  John R. Peterson ,  Jon A. Riesen ,  Robert S. Yih

    发明人： Kenneth C. Ash ,  William A. Crocker ,  John C. Haygarth ,  David R. Lee ,  Donald Morris ,  John R. Peterson ,  Jon A. Riesen ,  Robert S. Yih

    IPC分类号： C22B34/14 ,  C22B60/02

    CPC分类号： C22B34/14 ,  C22B60/0204 ,  Y02P10/212

    摘要： A process for the recovery of substantially pure zirconium values from zircon sand which also contains Ra, U, Hf, Pb and other metal values, comprising contacting zircon sand in a chlorinator with a chlorination medium to form an off-gas stream containing chlorides of Zr, Hf, Si, and tract U. The off-gas stream is passed to a condenser to remove volatile Si chlorides and thereby provide a product stream containing condensed chlorides of Zr, Hf and tract U, treating the product stream in acidic aqueous medium in a separation stage to separate the principal Hf values from the principal Zr values. Adjusting the pH of the resulting effluent to between about 3 to about 7 in a second stage to precipitate the trace U values. The residue stream is treated by(A) leaching with an acidic aqueous system to solubilize the trace Ra, Pb and other metal values while settling out the unreacted zircon sand and chlorination medium, and contacting the resultant leach liquor first with Ba++ ions and then with SO.sub.4 =ions to co-precipitate the barium and trace radium ions as a sulfate complex and the trace lead and other metal ions as their sulfates, or by(B) contacting at least a portion of the residue stream with an aqueous system containing CO.sub.3 =, SO.sub.4 =or PO.sub.4 =or mixtures thereof to precipitate and render the trace metal values substantially non-leachable with water, or by(C) contacting the leach liquor from (A) with CO.sub.3 =in a pH buffered, basic aqueous system to precipitate the trace metal values as non-leachable carbonates.

    摘要翻译： 一种用于从含有Ra，U，Hf，Pb和其他金属值的锆石砂中回收基本上纯锆值的方法，包括使氯化器中的锆石砂与氯化介质接触以形成含有Zr的氯化物的废气流 ，Hf，Si和管道U.将废气流送至冷凝器以除去挥发性的氯化物，从而提供含有Zr，Hf和U的冷凝氯化物的产物流，在酸性水性介质中处理产物流 分离阶段，将主Hf值与主Zr值分离。 在第二阶段将所得流出物的pH调节至约3至约7，以沉淀痕量U值。 通过（A）用酸性水溶液浸出来处理残余物流，以溶解痕量的Ra，Pb和其他金属值，同时沉淀出未反应的锆石砂和氯化介质，并将所得浸出液与Ba ++离子接触，然后与 SO4 =离子共沉淀钡并且以硫酸盐络合物和痕量铅等金属离子作为其硫酸盐，或（B）使至少一部分残余物流与含有CO 3 = ，SO 4 =或PO 4 =或其混合物以沉淀并使痕量金属值基本上不能用水浸出，或（C）使（A）的浸出液与pH缓冲的碱性水体系中的CO 3 =接触以沉淀 痕量金属值作为不可浸出的碳酸盐。

    Solution method for making molybdate and tungstate negative thermal expansion materials and compounds made by the method
    6.
    发明授权
    Solution method for making molybdate and tungstate negative thermal expansion materials and compounds made by the method 失效
    通过该方法制备钼酸盐和钨酸盐负热膨胀材料和化合物的溶液方法

    公开(公告)号：US06183716B2

    公开(公告)日：2001-02-06

    申请号：US09126986

    申请日：1998-07-30

    申请人： Arthur W. Sleight ,  Claire E. Closmann ,  John C. Haygarth ,  Kameswari Upadhyayula

    发明人： Arthur W. Sleight ,  Claire E. Closmann ,  John C. Haygarth ,  Kameswari Upadhyayula

    IPC分类号： C01G3900

    CPC分类号： C01G39/006 ,  C01G39/00 ,  C01G41/00 ,  C01G41/006 ,  C01P2002/72 ,  C01P2002/77 ,  C01P2006/10 ,  G01K5/48

    摘要： A method for making negative thermal expansion materials having the formula A 4 + ⁢ M 2 6 + ⁢ O 8 where A4+ is Zr4+, Hf4+, or mixtures thereof, and M6+ is Mo6+, W6+, or mixtures thereof, is described. The method comprises first forming an acidic, liquid mixture comprising stoichiometric amounts of (1) a soluble source of Zr4+, Hf4+, or mixtures thereof, and (2) a sodium-ion-free tungstate salt, a sodium-ion-free molybdate salt, or mixtures thereof. This liquid mixture is then heated, either at reflux temperature or in a closed system at pressures greater than ambient, to produce a solid fraction. The solid fraction is separated from the liquid mixture and heated a second time at a temperature and for a period of time sufficient to form compounds having the formula A 4 + ⁢ M 2 6 + ⁢ O 8 . The solid fraction generally is heated within the temperature range of from about 500° C. to less than about 700° C. An alternative embodiment of the method involves adding a fuel material to the materials listed above before the final heating step. A currently preferred fuel material is urea. The fuel material apparently undergoes an exothermic reaction that provides additional energy to help produce the desired compound. The use of the fuel has substantially reduced the reaction time, such as to less than an hour, and in certain embodiments the first heating cycle has been completed in about fifteen minutes. Novel negative thermal expansion materials made by the method also are described. Such novel negative thermal expansion materials have the formula A 1 - x 4 + ⁢ A x ′4 + ⁢ M 2 - y 6 + ⁢ M y ′6 + ⁢ O 8 where A4+ and A′4+ are Hf4+ or Zr4+, M6+ and M′6+ are W6+ or Mo6+, X is from 0 to 1, and Y is from about 0.05 to ≦2.

    摘要翻译： 描述了制备具有方形区域A4 +的负热膨胀材料的方法是Zr4 +，Hf4 +或其混合物，并且M6 +是Mo6 +，W6 +或其混合物。 该方法包括首先形成含有化学计量的（1）Zr4 +，Hf4 +或其混合物的可溶性源的酸性液体混合物，和（2）不含钠离子的钨酸盐，不含钠离子的钼酸盐 ，或其混合物。 然后将该液体混合物在回流温度下或在密闭系统中在高于环境温度的压力下加热，以产生固体部分。 将固体部分与液体混合物分离并在足以形成具有下式的化合物的温度下加热第二次固体部分通常在约500℃至小于约的温度范围内加热 700℃。该方法的替代实施例包括在最终加热步骤之前向上述材料添加燃料材料。 目前优选的燃料是尿素。 燃料材料显然经历放热反应，提供额外的能量以帮助产生所需化合物。 燃料的使用大大减少了反应时间，例如至少一小时，在某些实施方案中，第一加热循环已经在约十五分钟内完成。 还描述了通过该方法制造的新型负热膨胀材料。 这种新的负热膨胀材料具有A4 +和A'4 +为Hf4 +或Zr4 +，M6 +和M'6 +为W6 +或Mo6 +，X为0至1，Y为约0.05至≤2。

    Composite article, alloy and method
    7.
    发明授权
    Composite article, alloy and method 失效
    复合制品，合金及方法

    公开(公告)号：US5820707A

    公开(公告)日：1998-10-13

    申请号：US693225

    申请日：1996-08-21

    申请人： Darryl Dean Amick ,  John C. Haygarth ,  Hershel R. Henson ,  Sarit Behari Bhaduri ,  Kent Wayne Storey

    发明人： Darryl Dean Amick ,  John C. Haygarth ,  Hershel R. Henson ,  Sarit Behari Bhaduri ,  Kent Wayne Storey

    IPC分类号： C22C14/00

    CPC分类号： C22C14/00

    摘要： Controllable oxidation of certain titanium zirconium alloys is achieved by utilizing minor proportions of niobium, tantalum or vanadium or mixtures thereof and articles formed therefrom can be partially oxidized to form a deep, hard monolithic oxide containing surface layer and further or completely oxidized to form a cermet or ceramic body respectively, which can be heated further to improve the ceramic bodies properties.

    摘要翻译： PCT No.PCT / US95 / 03314 Sec。 371日期：1996年8月21日 102（e）日期1996年8月21日PCT 1995年3月17日PCT公布。 WO95 / 25183 PCT出版物 日期1995年9月21日某些钛锆合金的可控氧化通过使用少量的铌，钽或钒或其混合物实现，并且由此形成的制品可以被部分氧化以形成深的，硬的整体氧化物的表面层，并进一步或完全 氧化形成金属陶瓷体或陶瓷体，可进一步加热以改善陶瓷体的性能。

    Zirconium-hafnium separation process
    8.
    发明授权
    Zirconium-hafnium separation process 失效
    锆铪分离过程

    公开(公告)号：US5176878A

    公开(公告)日：1993-01-05

    申请号：US355478

    申请日：1989-05-23

    申请人： Lawrence E. Sarbeck ,  David R. Lee ,  Lawrence J. Jacoby ,  John C. Haygarth ,  Charles T. Goodwin ,  William A. Crocker

    发明人： Lawrence E. Sarbeck ,  David R. Lee ,  Lawrence J. Jacoby ,  John C. Haygarth ,  Charles T. Goodwin ,  William A. Crocker

    IPC分类号： C22B3/26 ,  C22B3/34 ,  C22B34/14

    CPC分类号： C22B3/0031 ,  C22B3/0021 ,  C22B34/14 ,  Y02P10/234

    摘要： A process for separating zirconium values from hafnium values wherein an aqueous solution of ZrCl.sub.4 and HfCl.sub.4 is contacted with NH.sub.4 SCN, feeding the resultant solution into a solvent extraction system containing aqueous HCl and MIBK, separating off the solvent phase containing MIBK, HSCN, hafnium thiocyanate complex, and any decomposition products of HSCN to leave the aqueous phase raffinate containing NH.sub.4 Cl, zirconium oxide-chloride and low concentrations of HSCN, scrubbing the hafnium values from the separated solvent phase, treating the scrubbed solvent phase containing MIBK and HSCN with NH.sub.4 OH to convert the HSCN to NH.sub.4 SCN, separating the NH.sub.4 SCN from the treated solvent phase, treating the separated solvent phase to remove essentially all thiazolines, and scrubbing residual HSCN from the raffinate with the desulfurized solvent phase.

    摘要翻译： 将锆值与铪值分离的方法，其中ZrCl 4和HfCl 4的水溶液与NH 4 SCN接触，将所得溶液进料到含有HCl水溶液和MIBK的溶剂萃取系统中，从含有MIBK，HSCN，硫氰酸铪络合物的溶剂相分离出来 ，以及HSCN的任何分解产物以离开含有NH 4 Cl，氧化锆 - 氯化物和低浓度HSCN的水相萃余液，从分离的溶剂相洗涤铪值，用NH 4 OH处理含有MIBK和HSCN的洗涤溶剂相，以转化 将HSCN与NH4SCN分离，将NH 4 SCN与处理的溶剂相分离，处理分离的溶剂相以除去基本上所有的噻唑啉，并用脱硫溶剂相从残液中洗涤剩余的HSCN。

    Method for separating coke from a feed mixture containing zirconium and radioactive materials by flotation process
    10.
    发明授权
    Method for separating coke from a feed mixture containing zirconium and radioactive materials by flotation process 失效
    通过浮选法从含有锆和放射性物质的进料混合物中分离焦炭的方法

    公开(公告)号：US5188809A

    公开(公告)日：1993-02-23

    申请号：US575817

    申请日：1990-08-31

    申请人： William A. Crocker ,  John C. Haygarth ,  Jon A. Riesen ,  John R. Peterson

    发明人： William A. Crocker ,  John C. Haygarth ,  Jon A. Riesen ,  John R. Peterson

    IPC分类号： B03D1/02 ,  C22B34/14 ,  C22B60/00

    CPC分类号： B03D1/02 ,  C22B34/14 ,  C22B60/00

    摘要： A process for separating a feed mixture of zirconium and petroleum coke containing traces amount of radioative materials by flotation process utilizing a plurality of flotation cells. The process comprises grinding the feed mixture, slurrying the ground feed mixture with water, treating the slurry with a flotation agent and a collector for the coke and subjecting the treated slurry to air sparging and agitation to create an overflow and an underflow. The overflow is then filtered to collect substantially zircon-free coke for further processing.

    摘要翻译： 一种利用多个浮选槽通过浮选工艺分离含有微量放射性材料的锆和石油焦的进料混合物的方法。 该方法包括研磨进料混合物，将研磨的进料混合物与水浆化，用浮选剂和用于焦炭的收集器处理浆料，并使经处理的浆料进行空气喷射和搅拌以产生溢流和下溢。 然后将溢流过滤以收集基本上无锆石的焦炭用于进一步处理。