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    • 1. 发明授权
    • Method of stabilizing wet process phosphoric acid for solvent extraction
    • 稳定湿法磷酸进行溶剂萃取的方法
    • US4327061A
    • 1982-04-27
    • US164583
    • 1980-06-30
    • John A. HermannMichael F. Lucid
    • John A. HermannMichael F. Lucid
    • C01B25/235C01G31/00C22B3/38C22B60/02B01D11/00C01B25/16C01G56/00
    • C22B3/0052C01B25/235C01G31/003C22B60/026Y02P10/234
    • A method of stabilizing wet process phosphoric acid containing acid soluble impurities preparatory to solvent extraction for the recovery of valuable minerals. The acid is introduced into a vessel containing crystal seed bed of the impurities. A portion of the acid then is withdrawn and concentrated to effect supersaturation of the impurities contained therein. The supersaturated acid is returned to the vessel to mix with the remaining solution and cause additional impurities to precipitate. Thereafter, a portion of the solution, containing precipitated impurities, is withdrawn and introduced into a separator. In the separator, the solution is separated into an essentially solids-free stream containing unprecipitated soluble impurities and a solids-containing stream. The solids-free stream is admixed with an aqueous diluent to dilute it to a concentration level below the concentration at which the precipitable impurities are saturated therein but without a substantial change in phosphate concentration to thereby stabilize the acid stream. The stabilized acid is contacted with an organic extractant to selectively extract at least one of the remaining unprecipitated soluble impurities without substantial precipitation of any other of the remaining soluble impurities.
    • 一种稳定含有酸溶性杂质的含磷酸的方法,用于回收有价值的矿物质,用于溶剂萃取。 将酸引入包含杂质晶体晶种床的容器中。 然后将一部分酸取出并浓缩以实现其中所含杂质的过饱和。 将过饱和酸返回到容器中与剩余的溶液混合并引起额外的杂质沉淀。 此后,将含有析出的杂质的一部分溶液取出并引入分离器中。 在分离器中,将溶液分离成含有未沉淀的可溶性杂质和含固体物流的基本上不含固体的物流。 将无固体物流与水性稀释剂混合以将其稀释至低于其中可沉淀杂质饱和的浓度的浓度水平,但磷酸盐浓度没有显着变化,从而稳定酸流。 使稳定化的酸与有机萃取剂接触以选择性提取剩余的未沉淀的可溶性杂质中的至少一种,而不会使任何其它剩余的可溶性杂质基本上沉淀。
    • 2. 发明授权
    • Biased pliers
    • 有偏见的钳子
    • US08555754B2
    • 2013-10-15
    • US12961286
    • 2010-12-06
    • Chungeng ChenJohn A. Hermann
    • Chungeng ChenJohn A. Hermann
    • B25B7/08
    • B25B7/06B25B7/18
    • A tool, such as fixed-joint pliers, has first and second levers which are movably joined. The levers are joined at a joint comprising a housing and a coupler. The housing is defined by a first housing portion of the first lever and a second housing portion of the second lever. The housing has an interior area which houses a biasing member, such as a torsion spring. The coupler may comprise first and second bushings which extend through a passage through the housing and the torsion spring therein, and a male fastener which extends through one of the bushings and into engagement with the other bushing. The pliers have a thin profile and are biased to an open position for use.
    • 诸如固定接头钳的工具具有可移动地连接的第一和第二杠杆。 杠杆在包括壳体和联接器的接头处连接。 壳体由第一杆的第一壳体部分和第二杆的第二壳体部分限定。 壳体具有容纳偏置构件的内部区域,例如扭转弹簧。 联接器可以包括第一和第二衬套,第一和第二衬套延伸穿过其中的壳体和扭转弹簧的通道,以及延伸穿过衬套中的一个并与另一衬套接合的阳紧固件。 钳子具有薄的轮廓并被偏压到打开位置以供使用。
    • 3. 发明授权
    • Construction for an adjustable wrench
    • 可调式扳手的结构
    • US06267029B1
    • 2001-07-31
    • US09512236
    • 2000-02-24
    • John A. Hermann
    • John A. Hermann
    • B25B1316
    • B25B13/14
    • An improved design for an adjustable wrench and a method for making the same are disclosed. One embodiment of the disclosed wrench includes a main body which includes a handle, upper jaw, and an attachment portion such as a groove. The lower jaw of the wrench, which contains two ribs with threaded surfaces, is slipped over the attachment portion. The threaded surfaces of the ribs are made to meet with the threads on a thumbwheel, thus allowing the distance between the upper and lower jaws to be varied by turning the thumbwheel. Because the lower jaw slips over the attachment portion of the main body, the disclosed wrench can be manufactured with reduced expense. Moreover, this configuration provides for increased stability because the ribs of the lower jaw contact the thumbwheel at two points.
    • 公开了一种用于可调扳手的改进设计及其制造方法。 所公开的扳手的一个实施例包括主体,其包括手柄,上钳口和诸如凹槽的附接部分。 扳手的下颚包含两个具有螺纹表面的肋,滑动在附接部分上。 肋的螺纹表面与指轮上的螺纹相配合,从而允许通过转动指轮来改变上钳口和下钳口之间的距离。 因为下颌滑动在主体的附接部分上,所以可以以降低的成本制造所公开的扳手。 而且,这种结构提供了增加的稳定性,因为下爪的肋在两点接触指轮。
    • 4. 发明申请
    • BIASED PLIERS
    • 自行车
    • US20120137840A1
    • 2012-06-07
    • US12961286
    • 2010-12-06
    • Chungeng ChenJohn A. Hermann
    • Chungeng ChenJohn A. Hermann
    • B25B7/02
    • B25B7/06B25B7/18
    • A tool, such as fixed-joint pliers, has first and second levers which are movably joined. The levers are joined at a joint comprising a housing and a coupler. The housing is defined by a first housing portion of the first lever and a second housing portion of the second lever. The housing has an interior area which houses a biasing member, such as a torsion spring. The coupler may comprise first and second bushings which extend through a passage through the housing and the torsion spring therein, and a male fastener which extends through one of the bushings and into engagement with the other bushing. The pliers have a thin profile and are biased to an open position for use.
    • 诸如固定接头钳的工具具有可移动地连接的第一和第二杠杆。 杠杆在包括壳体和联接器的接头处连接。 壳体由第一杆的第一壳体部分和第二杆的第二壳体部分限定。 壳体具有容纳偏置构件的内部区域,例如扭转弹簧。 联接器可以包括第一和第二衬套,第一和第二衬套延伸穿过其中的壳体和扭转弹簧的通道,以及延伸穿过衬套中的一个并与另一衬套接合的阳紧固件。 钳子具有薄的轮廓并被偏压到打开位置以供使用。