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公开(公告)号：US4495152A
公开(公告)日：1985-01-22
申请号：US297303
申请日：1981-08-28
Applicant: Tsoung-yuan Yan , Raymond L. Lozano
Inventor： Tsoung-yuan Yan , Raymond L. Lozano
CPC classification number: C22B60/0265 , C22B3/24 , Y02P10/234
Abstract: An apparatus for recovering uranium and/or related values which include means for protecting ion-exchange resins in the recovery operation from oxidative degradation due to contact with hydrogen peroxide. A guard chamber is positioned in the elution circuit so that barren eluant, after it is stripped of its uranium and/or related values by treatment with hydrogen peroxide, will flow through the chamber. The guard chamber contains catalytic material, e.g. activated carbon, which decomposes hydrogen peroxide upon contact into water and oxygen. The barren eluant, after it passes through the catalytic material, is used to make up fresh eluant for reuse in the recovery method without the risk of the fresh eluant causing oxidative degradation of the resins.
Abstract translation: 用于回收铀和/或相关值的装置，其包括用于保护回收操作中的离子交换树脂的手段免受与过氧化氢接触的氧化降解。 保护室位于洗脱回路中，使得贫水洗脱液在通过用过氧化氢处理被除去其铀和/或相关值之后将流过该室。 防护室包含催化材料，例如 活性炭，其在接触到水和氧时分解过氧化氢。 贫水洗脱液在通过催化材料后，用于补充新鲜洗脱液，以便在回收方法中再次使用，而不会引起新鲜洗脱液引起树脂氧化降解的风险。
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公开(公告)号：US4280985A
公开(公告)日：1981-07-28
申请号：US021129
申请日：1979-03-16
Applicant: Tsoung-yuan Yan
Inventor： Tsoung-yuan Yan
CPC classification number: C22B60/0265
Abstract: Process for the recovery of uranium from a pregnant lixiviant employed in uranium leaching operations in which the uranium is concentrated by ion exchange resin. The ion exchange resin is eluted with an eluant containing 0.05-0.5 molar ammonium carbonate. The eluant also contains a base such as ammonium hydroxide in an amount sufficient to increase the pH to a value within the range of 9.0-11.0, thus increasing the carbonate/bicarbonate ratio. This enables the use of a relatively small quantity of ammonium carbonate to provide the desired carbonate ion concentration during the elution step.
Abstract translation: 从用于铀通过离子交换树脂浓缩的铀浸出操作中的怀孕浸取物回收铀的方法。 离子交换树脂用含有0.05-0.5摩尔碳酸铵的洗脱液洗脱。 洗脱剂还含有足以将pH增加至9.0-11.0范围内的量的氢氧化铵等碱，从而增加碳酸盐/碳酸氢比。 这使得能够在洗脱步骤中使用相对少量的碳酸铵来提供所需的碳酸根离子浓度。
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公开(公告)号：US4278292A
公开(公告)日：1981-07-14
申请号：US21400
申请日：1979-03-19
Applicant: Tsoung-yuan Yan , Wilton F. Espenscheid
Inventor： Tsoung-yuan Yan , Wilton F. Espenscheid
CPC classification number: E21B43/28
Abstract: Process for the stabilization of formation clays by the use of aluminum in the in-situ leaching of uranium or the restoration of contaminated formations. The aluminum is added to a lixiviant having a pH in the range of 6-10 or to a restoration fluid having a pH of at least 6 in an amount effective for the stabilization of clays.
Abstract translation: 通过在原位浸出铀或修复受污染的地层中使用铝来稳定地层粘土的方法。 将铝添加到pH为6-10的pH值至少为6的pH值为6〜10的浸出液中，其量为有效稳定粘土的量。
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公开(公告)号：US4241026A
公开(公告)日：1980-12-23
申请号：US961438
申请日：1978-11-16
Applicant: Tsoung-yuan Yan
Inventor： Tsoung-yuan Yan
CPC classification number: B01J41/043 , C22B60/0265
Abstract: An ion exchange process for the recovery of uranium from a pregnant lixiviant employed in uranium leaching operations in which the lixiviant contains chloride ions inhibiting the adsorption of uranyl ions. The ion exchange resin employed to adsorb uranium from the lixiviant has cationic adsorption sites provided by quaternary ammonium groups having a hydroxyalkyl group as a quaternizing substituent. Through the use of a resin of this type, the resin loading in the presence of chloride ions is materially increased.
Abstract translation: 用于从铀浸出操作中使用的怀孕浸剂中回收铀的离子交换方法，其中浸出剂含有抑制吸附铀酰离子的氯离子。 用于从浸取剂中吸附铀的离子交换树脂具有由具有羟烷基作为季铵化取代基的季铵基提供的阳离子吸附位点。 通过使用这种树脂，在氯离子存在下的树脂负载量大大增加。
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公开(公告)号：US4340252A
公开(公告)日：1982-07-20
申请号：US36627
申请日：1979-05-07
Applicant: Wilton F. Espenscheid , Tsoung-yuan Yan
Inventor： Wilton F. Espenscheid , Tsoung-yuan Yan
CPC classification number: C22B60/0234 , E21B43/28
Abstract: Process for the in-situ leaching of uranium from a subterranean ore deposit comprising introducing into the deposit an aqueous lixiviant formulated from a dilute sulfuric acid solution which also contains carbon dioxide. The lixiviant has a pH within the range of 1.0-2.5. The lixiviant may also contain an alkali metal sulfate such as sodium sulfate. The process is particularly applicable to subterranean deposits containing uranium associated with carbonaceous material.
Abstract translation: 用于从地下矿床原位浸出铀的方法，包括将由含有二氧化碳的稀硫酸溶液配制的含水浸剂引入沉积物中。 浸泡剂的pH值在1.0-2.5的范围内。 浸渍剂还可以含有硫酸钠等碱金属硫酸盐。 该方法特别适用于含有与碳质材料相关的铀的地下沉积物。
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Patent Agency Ranking
公开(公告)号：US4337979A
公开(公告)日：1982-07-06
申请号：US36890
申请日：1979-05-07
Applicant: Tsoung-yuan Yan
Inventor： Tsoung-yuan Yan
CPC classification number: C22B60/0234 , C22B60/0208 , E21B43/28
Abstract: Process for the in-situ leaching of uranium from a subterranean ore deposit employing a lixiviant containing an oxidizing agent, sulfuric acid, and carbon dioxide. Prior to the injection of the lixiviant, an aqueous solution of sulfuric acid and oxidizing agent is injected into the deposit in an amount of at least 1 pore volume. The initially injected acid solution is substantially free of carbon dioxide. The process is particularly applicable to subterranean deposits containing uranium associated with carbonaceous material.
Abstract translation: 使用含有氧化剂，硫酸和二氧化碳的浸渍剂从地下矿床中原位浸出铀的方法。 在注入溶剂之前，将硫酸和氧化剂的水溶液以至少1孔体积的量注入沉积物中。 初始注射的酸溶液基本上不含二氧化碳。 该方法特别适用于含有与碳质材料相关的铀的地下沉积物。
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公开(公告)号：US4162707A
公开(公告)日：1979-07-31
申请号：US898760
申请日：1978-04-20
Applicant: Tsoung-yuan Yan
Inventor： Tsoung-yuan Yan
Abstract: A method of treating a subterranean formation which has undergone an in situ leaching operation which utilzed an ammonium solution as the lixiviant. In such a leach operation, ammonium ions will exchange into the clay in the formation and will present a threat of contamination to any ground waters that may be present in the formation. The present method involves flushing the formation with a halogenated restoration fluid, e.g., chlorinated water having a halogen therein which reacts with ammonia within the formation to decompose the ammonia to nitrogen. The halogenated restoration fluid can be continuously injected or it can be injected as a slug followed by a relatively halogen-free solution to complete the operation. The ammonia concentration of the produced fluids is monitored and when it drops below a desired value, the method is complete.
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8.发明授权Method and apparatus for mixing gaseous oxidant and lixiviant in an in situ leach operation 失效在原位浸出操作中混合气态氧化剂和浸出剂的方法和装置
公开(公告)号：US4351566A
公开(公告)日：1982-09-28
申请号：US846863
申请日：1977-10-31
Applicant: Tsoung-yuan Yan , Wilton F. Espenscheid
Inventor： Tsoung-yuan Yan , Wilton F. Espenscheid
Abstract: Method and apparatus for mixing a gaseous oxidant (e.g., oxygen) and a lixiviant (e.g., an aqueous carbonate solution) at a downhole location in a well before the oxygen-saturated lixiviant is injected into a formation to be leached. The invention involves establishing a mixing zone in the well by positioning an orifice plate in the well at the downhole location. Lixiviant as it is flowed down the well passes through a restrictive opening in the plate causing a substantial increase in the flow velocity of the lixiviant. At the same time, gaseous oxidant is supplied to a point adjacent the opening in the plate and due to the increased velocity of the lixiviant flowing through the orifice, the oxidant is trapped to form a gas pocket below the orifice. Lixiviant flows through the gas pocket and becomes saturated with the gaseous oxidant.
Abstract translation: 在将氧饱和的浸渍剂注入到要沥滤的地层中之前，将井中的井下位置处的气态氧化剂（例如氧气）和浸渍剂（例如碳酸水溶液）混合的方法和装置。 本发明涉及通过在井下位置将孔板定位在井中来在井中建立混合区。 浸入池中的浸渍剂通过板中的限制性开口，导致浸渍剂的流速显着增加。 同时，将气态氧化剂供应到与板中的开口相邻的点处，并且由于流过孔口的浸渍剂的速度增加，氧化剂被捕获以在孔口下方形成气体袋。 Lixiviant流过气袋并用气态氧化剂饱和。
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9.发明授权Ion exchange resins of high loading capacity, high chloride tolerance and rapid elution for uranium recovery 失效离子交换树脂具有高负载能力，高氯化物耐受性和快速洗脱铀回收率
公开(公告)号：US4312838A
公开(公告)日：1982-01-26
申请号：US69688
申请日：1979-08-27
Applicant: Tsoung-yuan Yan
Inventor： Tsoung-yuan Yan
IPC: C22B60/02
CPC classification number: C22B60/0265
Abstract: Ion exchange process for the recovery of uranium from a pregnant carbonate lixiviant employed in uranium leaching operations in which the lixiviant is passed over a precipitation inducing anionic ion exchange resin under conditions to load the resin predominantly with non-exchangeable uranium. Non-exchangeable uranium is then recovered from the resin by eluting the resin with an aqueous acid solution having a pH no greater than 2. The process is useful in those applications in which the lixiviant contains chloride ions which inhibit the adsorption of uranyl ions.
Abstract translation: 用于从铀浸出操作中使用的妊娠碳酸盐浸剂中回收铀的离子交换方法，其中浸渍剂在主要以不可交换的铀负载树脂的条件下通过沉淀诱导阴离子离子交换树脂。 然后通过用pH不大于2的酸性水溶液洗脱树脂从树脂中回收不可交换的铀。该方法可用于其中浸渍剂含有抑制吸附铀酰离子的氯离子的应用中。
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公开(公告)号：US4298578A
公开(公告)日：1981-11-03
申请号：US963662
申请日：1978-11-24
Applicant: Tsoung-yuan Yan , Raymond L. Lozano
Inventor： Tsoung-yuan Yan , Raymond L. Lozano
CPC classification number: C22B60/0265 , C22B3/24 , C22B3/42 , Y02P10/234
Abstract: A method for recovering uranium and/or related values which include means for protecting ion-exchange resins in the recovery operation from oxidative degradation due to contact with hydrogen peroxide. A guard chamber is positioned in the elution circuit so that barren eluant, after it is stripped of its uranium and/or related values by treatment with hydrogen peroxide, will flow through the chamber. The guard chamber contains catalytic material, e.g. activated carbon, which decomposes hydrogen peroxide upon contact into water and oxygen. The barren eluant, after it passes through the catalytic material, is used to make up fresh eluant for reuse in the recovery method without the risk of the fresh eluant causing oxidative degradation of the resins.
Abstract translation: 用于回收铀和/或相关值的方法，其包括用于保护回收操作中的离子交换树脂与由于与过氧化氢接触引起的氧化降解的方法。 保护室位于洗脱回路中，使得贫水洗脱液在通过用过氧化氢处理被除去其铀和/或相关值之后将流过该室。 防护室包含催化材料，例如 活性炭，其在接触到水和氧时分解过氧化氢。 贫水洗脱液在通过催化材料后，用于补充新鲜洗脱液，以便在回收方法中再次使用，而不会引起新鲜洗脱液引起树脂氧化降解的风险。
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