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    • 3. 发明授权
    • Processes for recovering precious metals
    • 回收贵金属的工艺
    • US5238662A
    • 1993-08-24
    • US880876
    • 1992-05-11
    • Michael Dubrovsky
    • Michael Dubrovsky
    • C01B17/06C01G1/06C22B1/08C22B3/10C22B11/06
    • C01G1/06C01B17/06C22B1/08C22B11/06C22B3/10Y02P10/234
    • Disclosed is a process for recovering precious metals using a combination of smelting and an effective utilization of molten salt chlorination. More specifically, disclosed is a process including the steps of (i) contacting, for example, a matte with a chloride salt containing at least one of potassium, cesium or rubidium, but not sodium or lithium to form a matte/salt solids mixture, (ii) introducing the solids mixture into a chloride melt having a temperature ranging from 300.degree. C. to 650.degree. C., said melt containing at least one of potassium, cesium, rubidium, sodium or lithium, (iii) introducing a chlorine containing gas into the melt, and (iv) maintaining the salt ratio in the matte/salt mixture at a stoichiometrically equivalent amount with the precious metals and base metals contained in the matte. Also disclosed is a selective dissolution technique which involves multiple dissolution stages wherein each stage the oxidation potential is maintained at a certain level and an alkali metal chloride is added such that platinum and palladium can be separately recovered.
    • 公开了一种使用冶炼和有效利用熔融盐氯化回收贵金属的方法。 更具体地,公开了一种方法,其包括以下步骤:(i)使例如锍与含有钾,铯或铷中的至少一种的氯盐接触,但不与钠或锂接触以形成无光/盐固体混合物, (ii)将固体混合物引入温度为300℃至650℃的氯化物熔体中,所述熔体含有钾,铯,铷,钠或锂中的至少一种,(iii)引入含氯 气体进入熔体,以及(iv)以与化妆品当量相同的方式将锍/盐混合物中的盐比率与锍中所含的贵金属和贱金属保持一致。 还公开了一种选择性溶解技术,其包括多个溶解阶段,其中每个阶段的氧化电位保持在一定水平,并加入碱金属氯化物,使得可以单独回收铂和钯。
    • 5. 发明授权
    • Apparatus for removing suspended solids from a liquid
    • 用于从液体中除去悬浮固体的装置
    • US5076915A
    • 1991-12-31
    • US541447
    • 1990-06-22
    • Phillip R. Rose
    • Phillip R. Rose
    • B01D21/00C10G1/04C10G31/09
    • C10G31/09B01D21/0042B01D21/02B01D21/2427C10G1/045
    • Disclosed is a gravity settler for separating finely divided solids such as coal fines from a liquid such as a mixture of coal oil and agglomerating agent by agglomeration. A feed slurry comprising finely divided solids and a liquid mixture of product oil and an agglomerating agent is discharged into a specially shaped duct which promotes formation of agglomerated solids while minimizing turbulence in the remainder of the vessel. The agglomerated solids separate from the liquid by gravity and are washed as they leave the settler while the clarified liquid is discharged from the top of the settler. A method for separating suspended solids from a liquid by agglomeration is also disclosed.
    • 公开了一种重力沉降器,用于通过聚集从诸如煤油和附聚剂的混合物的液体中分离细碎的固体如煤粉。 包含细碎固体和产物油和附聚剂的液体混合物的进料浆料被排出到特殊形状的管道中,其促进附聚固体的形成,同时使容器的其余部分中的湍流最小化。 凝聚的固体通过重力与液体分离,并在离开沉降器时洗涤,同时澄清的液体从沉降器的顶部排出。 还公开了通过聚集从液体中分离悬浮固体的方法。
    • 6. 发明授权
    • Permeability of fines-containing earthen formations by removing liquid
water
    • 通过去除液态水,含细土的土层的渗透性
    • US5052490A
    • 1991-10-01
    • US453652
    • 1989-12-20
    • Marion G. Reed
    • Marion G. Reed
    • C09K8/592E21B43/16E21B43/24
    • E21B43/164C09K8/592E21B43/24Y02P90/70
    • A method is disclosed for improving the effectiveness of fluid transport in a petroleum reservoir. That method comprises increasing the permeability of a portion of the reservoir by removing liquid water from that portion by evaporating off the liquid water. Preferably, substantially all of the liquid water is removed. In one embodiment, the liquid water is evaporated off by heating the portion to a temperature above the boiling point of water for the ambient pressure of the portion. In another embodiment, the liquid water is evaporated off by injecting into the reservoir a gas (such as heated nitrogen) that is undersaturated with respect to water. In a third embodiment, steam is injected into a well within the portion, and the steam is blown down to vaporize substantially all of the liquid water and to cause the vaporized water to leave the portion. In still another embodiment, superheated steam is injected into the reservoir. Prior to the evaporation in any of those embodiments, nitrogen or natural gas can displace a fraction of the liquid water from the portion of the formation.
    • 公开了一种用于提高石油储存器中流体输送的有效性的方法。 该方法包括通过从液体水中蒸发而从该部分除去液态水来增加储存器的一部分的渗透性。 优选地,基本上所有的液态水被去除。 在一个实施方案中,通过将该部分加热到高于沸点的温度以使该部分的环境压力蒸发掉液态水。 在另一个实施方案中,通过向贮存器注入相对于水不饱和的气体(例如加热的氮气)而蒸发掉液态水。 在第三实施例中,将蒸汽注入到该部分内的井中,并且将蒸汽吹扫以基本上蒸发所有的液态水并使蒸发的水离开该部分。 在另一个实施例中,将过热蒸汽注入储存器。 在任何这些实施例中的蒸发之前,氮气或天然气可以从地层部分置换一部分液态水。