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    RECOVERY OF CRITICAL METALS FROM SX-EW COPPER RAFFINATE AND OTHER SOLUTIONS DERIVED FROM LEACHING ORES WITH SULFURIC ACID
    2.
    发明申请
    RECOVERY OF CRITICAL METALS FROM SX-EW COPPER RAFFINATE AND OTHER SOLUTIONS DERIVED FROM LEACHING ORES WITH SULFURIC ACID 有权

    公开(公告)号：US20210277497A1

    公开(公告)日：2021-09-09

    申请号：US17192356

    申请日：2021-03-04

    申请人： Scandium International Mining Corporation

    发明人： Willem P.C. Duyvesteyn

    IPC分类号： C22B3/08 ,  C22B21/00 ,  C22B61/00 ,  C22B7/00 ,  C22B15/00 ,  C22B35/00 ,  C22B47/00 ,  C22B3/00

    摘要： A method for extracting secondary metal values from a sulfuric acid leachate is provided. The method includes providing a leachate which contains a primary metal and a plurality of secondary metals, wherein the primary metal is selected from the group consisting of Cu, Li and Ni and is derived from sulfuric acid leaching of an ore; passing the leachate through a first ion exchange resin which is selective to, and releasably binds, the plurality of secondary metals; stripping the plurality of secondary metals from the second or third ion exchange resins, thereby obtaining a first extract; and recovering the secondary metals from the first extract. In some embodiments, prior to passing the leachate through the first ion exchange resin, the leachate is passed through a second ion exchange resin which is selective to, and releasably binds, one of the plurality of secondary metals. The one of the secondary metals is then stripped from the second exchange resin, thereby obtaining a second extract, and the one of the secondary metals is recovered from the second extract.

    Method for the complete dissolution of mineral samples
    4.
    发明授权
    Method for the complete dissolution of mineral samples 失效
    矿物样品完全溶解的方法

    公开(公告)号：US4044116A

    公开(公告)日：1977-08-23

    申请号：US692720

    申请日：1976-06-04

    申请人： Kent J. Eisentraut ,  Shib C. Chattoraj

    发明人： Kent J. Eisentraut ,  Shib C. Chattoraj

    IPC分类号： B01F1/00 ,  C22B3/06 ,  C22B34/32 ,  C22B35/00

    CPC分类号： C22B3/06 ,  B01F1/0005 ,  C22B34/32 ,  C22B35/00 ,  Y02P10/234 ,  Y10T436/25125

    摘要： A method for the complete dissolution of "hard to dissolve" mineral samples, such as lunar and geological samples, wherein milligram amounts of a sample in particulate form is successively mixed while heating with small amounts of hydrofluoric acid and a mixture of sulfuric acid and distilled, demineralized water. Heating of the resulting solution is continued until its volume is reduced to about 2 milliliters after which the solution is rapidly cooled to room temperature. After adding a small amount of distilled, demineralized water, it is heated while swirling to provide a crystal clear solution. When dissolving lunar or other samples containing beryllium and chromium, an amount of a solution of sodium hydroxide is added to the crystal clear solution that is sufficient to bring the pH of the solution to about 2.5. The method makes it possible to completely dissolve mineral samples rapidly and efficiently for subsequent accurate chemical analysis.

    摘要翻译： 一种完全溶解“难溶解”的矿物样品（如月球和地质样品）的方法，其中将毫克数的颗粒状样品连续混合，同时用少量氢氟酸和硫酸和蒸馏的混合物加热 ，软化水。 继续加热所得溶液直到其体积减少至约2毫升，然后将溶液快速冷却至室温。 加入少量蒸馏水后，加热，同时旋转，提供清澈透明的溶液。 当溶解含有铍和铬的月球或其他样品时，将一定量的氢氧化钠溶液加入到足以使溶液的pH达到约2.5的透明溶液中。 该方法可以快速有效地完全溶解矿物样品，以便后续的精确化学分析。

    Galling resistant austenitic stainless steel
    5.
    发明授权
    Galling resistant austenitic stainless steel 失效
    耐磨奥氏体不锈钢

    公开(公告)号：US4039356A

    公开(公告)日：1977-08-02

    申请号：US552357

    申请日：1975-02-24

    申请人： William J. Schumacher ,  Harry Tanczyn

    发明人： William J. Schumacher ,  Harry Tanczyn

    IPC分类号： C22C38/58 ,  C22B35/00 ,  C22C38/40

    CPC分类号： C22C38/58

    摘要： An austenitic stainless steel having excellent galling resistance by reason of a silicon-containing surface oxide film and a high work hardening rate, good wear resistance, good corrosion resistance in chloride-containing environmets, and excellent oxidation resistance, containing 10% to 25% chromium, 3% to 15% nickel, 6% to 16% manganese, 2% to 7% silicon, 0.001% to 0.25% carbon, 0.001% to 0.4% nitrogen, and balance iron except for incidental impurities. Up to 4% molybdenum, up to 4% copper, 0.09% maximum phosphorus, up to 0.25% maximum sulfur and up to 0.50% maximum selenium may be present. The steel is readily workable on ordinary equipment into plate, sheet, strip, bar, rod and like wrought products.

    摘要翻译： 奥氏体不锈钢由于含硅表面氧化膜而具有优异的耐烧蚀性，并且具有高的加工硬化率，良好的耐磨性，含氯环境中的良好的耐腐蚀性和优异的抗氧化性，含有10％至25％的铬 ，3％至15％的镍，6％至16％的锰，2％至7％的硅，0.001％至0.25％的碳，0.001％至0.4％的氮，以及余量的铁，除了偶然的杂质。 高达4％的钼，高达4％的铜，0.09％的最大磷，最多0.25％的最大硫和最多达0.50％的最大硒。 这种钢在普通的设备上很容易用于板，板，条，棒，棒等锻造产品中。

    Carbothermic reduction method for converting metal oxides to metal form
    6.
    发明授权
    Carbothermic reduction method for converting metal oxides to metal form 失效
    用于将金属氧化物转化为金属形式的碳热还原方法

    公开(公告)号：US3794482A

    公开(公告)日：1974-02-26

    申请号：US3794482D

    申请日：1971-02-05

    申请人： PARLEE ANDERSON CORP

    发明人： ANDERSON R ,  PARLEE N

    IPC分类号： C22B5/10 ,  C22B21/00 ,  C22B21/02 ,  C22B34/12 ,  C22B60/02 ,  C22B29/00 ,  C22B35/00

    CPC分类号： C22B60/0213 ,  C22B5/10 ,  C22B21/00 ,  C22B21/02 ,  C22B34/1281

    摘要： A CARBOTHERMIC REDUCTION METHOD WHEREIN OXIDES OF CHEMICALLY REACTION METALS SUCH AS TITANIUM, URANIUM, ALUMINUM AND BORON ARE REACTED WITH CARBON IN A MOLTEN METAL SOLVENT WITH THE RESULTANT PRODUCTION OF CARBON MONOXIDE GAS AND OF FREE METAL WHICH IS PRESENT IN SOLUTON IS SAID SOLVENT. IN ONE EMBODIMENT, SAID CARBOTHERMIC REDUCTION TAKES PLACE UNDER AN ATMOSPHERE OF NITROGEN GAS WHEREBY THE METAL OXIDE IS CONVERTED TO A SOLID METAAL NITRIDE WHICH, IN THE PRESENCE OF THE MOLTEN METAL SOLVENT MAY THEREAFTER BE CONVERTED TO A SOLUTION OF THE PURE METAL IN SAID SOLVENT AS NITROGEN PRESSURES OVER THE SYSTEM ARE REDUCED. THE PURE METAL GOING INTO SOLUTION AS DERIVED FROM EITHER THE OXIDE OR THE NITRIDE CAN BE RECOVERED FROM THE SOLUTION BY VARIOUS PHASE SEPARATION METHODS, INCLUDING THOSE WHEREIN THE METAL TO BE RECOVERED OR THE SOLVENT METAL IS DISTILLED OFF OR A LIQUID-LIQUID PHASE SEPARATION METHOD IS PRACTICED. FURTHERMORE. A PHASE SEPARATION MAY BE ACCOMPLISHED BY LOWERING THE TEMPERATURE OF THE SYSTEM UNTIL THE REACTIVE METAL PRECIPITATES BUT WHILE THE SOLVENT IS STILL IN LIQUID FORM.

    Process for the purification of beryllium metal
    7.
    发明授权
    Process for the purification of beryllium metal 失效
    净化金属的工艺

    公开(公告)号：US3719472A

    公开(公告)日：1973-03-06

    申请号：US3719472D

    申请日：1970-11-17

    申请人： NAT DISTILLERS CHEM CORP

    发明人： LERMAN F

    IPC分类号： C22B35/00

    CPC分类号： C22B35/00

    摘要： Beryllium metal is produced from impure beryllium or in situ reduced beryllium containing materials by solid phase separation from a molten mixture of beryllium-rich aluminum and/or silicon.

    摘要翻译： 铍金属由不纯的铍或原位还原的含铍材料通过与富铍铝和/或硅的熔融混合物的固相分离产生。

    Beneficiation of beryllium
    8.
    发明授权
    Beneficiation of beryllium 失效
    BILLLLIUM的受益

    公开(公告)号：US3713810A

    公开(公告)日：1973-01-30

    申请号：US3713810D

    申请日：1970-05-11

    申请人： BRUSH BERYLLIUM CO

    发明人： WALSH K ,  SANDOR A

    IPC分类号： C22B35/00

    CPC分类号： C22B35/00

    摘要： There is provided an improved process for beneficiating beryllium metal and more particularly a process for purifying beryllium particles, particularly cast or virgin beryllium particles, by leaching with aqueous acid at relatively low temperatures for up to 6 or 8 hours, and characterized by the step of submitting the beryllium, either before or after conversion to particulate metal, to a thermal aging treatment at elevated temperatures for a prolonged period of time.

    摘要翻译： 提供了一种用于选择铍金属的改进方法，特别是通过在相对低的温度下用含水酸浸出长达6或8小时来净化铍颗粒，特别是铸造或原始铍颗粒的方法，其特征在于步骤 将铍在转化为颗粒金属之前或之后，在升高的温度下长时间处理进行热老化处理。

    Extraction of beryllium from ores
    9.
    发明授权
    Extraction of beryllium from ores 失效

    公开(公告)号：US3704091A

    公开(公告)日：1972-11-28

    申请号：US3704091D

    申请日：1970-12-21

    申请人： ANACONDA CO

    发明人： GRUNIG JAMES K ,  DAVIS WILLIAM B ,  AITKENHEAD WILLIAM C

    IPC分类号： C22B35/00 ,  C22B59/00

    CPC分类号： C22B35/00

    摘要： THE EXTRACTION AND THE RECOVERY OF BERYLIUM SUBSTANTIALLY DEVOID OF ZINC AND OTHER IMPURITES FROM LOW AND MEDIUM GRADE ACID-LEACHABLE BERYLLIUM BEARING ORES IS ACCOMPLISHED BY ACID-LEACHING AT A PH IN THE RANGE FROM ABOUT 1.2 TO ABOUT 2, PREFERABLY BETWEEN 1.3 AND 1.5, AND ADVANTAGEOUSLY WITH THE AID OF A SOLUBLE FLUORIDE ADDITIVE FOLLOWED BY RAISING THE PH OF THE LEACH LIQUOR INITIALLY TO ABOVE 3.0 BUT BELOW ABOUT 4.5 AND FINALLY TO ABOVE 7.5 BUT BELOW 9.0 TO PRECIPITATE BERYLLIUM HYDROXIDE THEREFROM. IN THE INITIAL PH RAISING STEP, ALUMINUM IS PRECIPITATED FROM THE LEACH SOLUTION. AFTER FILTRATION TO REMOVE THE PRECIPITATE, A CHELATING AGENT SUCH AS EDTA MAY BE ADDED TO THE FILTRATE PRIOR TO THE SECOND PH RAISING STEP FOR THE PRECIPITATION OF BERYLLIUM VALUES THEREFROM. THE PRECIPITATED BERYLLIUM HYDROXIDE IS FURTHER PURIFIED BY REDISSOLUTION HYDROLYSIS IN SODIUM HYDROXIDE SOLUTION. ALTERNATIVELY, IT MAY BE TREATED WITH STRONG AND HOT CONCENTRATED SULFURIC ACID PRIOR TO THE PRECIPITATION OF BERYLLIUM VALUES AS A HYDROXIDE. THE ZINC IS REMOVED FROM THE FINAL BERYLLIUM PRODUCT BY TREATING THE LEACH LIQUOR WITH A SOLUBLE SULFIDE AFTER THE INITIAL PH RAISING STEP OR BEFORE THE HYDROLYSIS OF THE REDISSOLVED BERYLLIUM HYDROXIDE.