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    • 2. 发明申请
    • EXTRACTION PROCESS
    • 提取过程
    • WO2011095679A1
    • 2011-08-11
    • PCT/FI2011/050060
    • 2011-01-27
    • OUTOTEC OYJNYMAN, BrorPAATERO, ErkkiHULTHOLM, Stig-ErikEKMAN, Eero
    • NYMAN, BrorPAATERO, ErkkiHULTHOLM, Stig-ErikEKMAN, Eero
    • C22B3/38C22B60/02C01G43/00
    • C01G43/003C22B3/0047C22B60/026Y02P10/234
    • The invention relates to a method for the selective recovery of uranium from a sulphate-based acidic aqueous solution of uranium containing iron and other metals by means of solvent extraction, in which the extractant used in the organic extraction solution is bis(2-ethylhexyl) phosphate and a liquid branched trialkyl phosphine oxide is the modifying agent. It is typical of the method that the uranium concentration in the feed solution is less than 50 mg/l and a reducing agent is introduced into the aqueous and/or extraction solution to prevent the permanent oxidation of iron to trivalent. In the method the majority of the extraction solution is circulated in a circuit consisting of the extraction stage and the storage tank and only a small part of the uranium-loaded extraction solution is routed to scrubbing and stripping.
    • 本发明涉及一种通过溶剂萃取从含硫酸镉铁和其他金属的硫酸盐酸性水溶液中选择性回收铀的方法,其中有机提取溶液中使用的萃取剂是双(2-乙基己基) 磷酸酯和液态支链三烷基氧化膦是改性剂。 该方法的典型方法是,进料溶液中的铀浓度小于50mg / l,并​​将还原剂引入水和/或提取溶液中以防止铁的永久氧化成三价。 在该方法中,大多数提取溶液在由萃取阶段和储存罐组成的回路中循环,并且只有少量的铀负载的萃取溶液被送至洗涤和汽提。
    • 6. 发明申请
    • PUMP AND A METHOD FOR DISASSEMBLING THE PUMP
    • 泵和一种拆卸泵的方法
    • WO2008139023A1
    • 2008-11-20
    • PCT/FI2008/050119
    • 2008-03-17
    • OUTOTEC OYJEKMAN, EeroLYYRA, JuhaniPEKKALA, PerttiNYMAN, BrorHULTHOLM, Stig-Erik
    • EKMAN, EeroLYYRA, JuhaniPEKKALA, PerttiNYMAN, BrorHULTHOLM, Stig-Erik
    • F04D1/00F04D29/42F04D29/62B01D11/04C22B3/02
    • C22B3/02B01D11/0457C22B3/0005F04D29/426F04D29/606F04D29/628Y02P10/234
    • A pump comprising a body (1) that is a cylindrical vertical container (10), which is upwards open, its interior (2) being defined by a planar bottom (11) that comprises a central inlet (3), and by a first side wall (12) that comprises an outlet (4) in the lower part thereof in the vicinity of the bottom (11). An impeller (5) is arranged to rotate around a verti- cal axis in the vicinity of the inlet (3) and centrally with respect to the container (10). A flush cover (13) is adapted in the interior (2). The flush cover includes a cylindrical second side wall (14). Between the first side wall and the second side wall, an upwards open annular first space (15) is formed. A bottom cone (16) has a frusto-conical shape and it extends to the vicinity of the impeller (5). A through pipe (17) extends from the bottom cone (16) upwards, a drive shaft (8) being placed inside the pipe, and a second space (18) being defined around the drive shaft. A vertical scroll wall (19) surrounds the impeller (5) and forms, with the bottom cone (16), a scroll cover (7) that surrounds the impeller (5) and expands towards the outlet (4).
    • 一种泵,包括主体(1),其是向上开口的圆柱形垂直容器(10),其内部(2)由包括中心入口(3)的平面底部(11)和第一 侧壁(12),其包括在底部(11)附近的下部的出口(4)。 叶轮(5)布置成围绕入口(3)附近的垂直轴线并相对于容器(10)居中转动。 在内部(2)中适配齐平盖(13)。 冲洗盖包括圆柱形的第二侧壁(14)。 在第一侧壁和第二侧壁之间形成有向上开放的环形第一空间(15)。 底锥(16)具有截头圆锥形状并且延伸到叶轮(5)附近。 贯通管(17)从底锥体(16)向上延伸,驱动轴(8)放置在管内,以及围绕驱动轴限定的第二空间(18)。 垂直涡旋壁(19)围绕叶轮(5)并与底锥(16)形成围绕叶轮(5)并朝向出口(4)膨胀的涡旋盖(7)。
    • 9. 发明申请
    • METHOD FOR RECOVERING COPPER FROM A COPPER SULPHIDE ORE
    • 从铜硫化物还原铜的方法
    • WO2007093667A1
    • 2007-08-23
    • PCT/FI2007/000036
    • 2007-02-14
    • OUTOTEC OYJ.HULTHOLM, Stig-ErikROSENBACK, LeifHAAPALAINEN, Mika
    • HULTHOLM, Stig-ErikROSENBACK, LeifHAAPALAINEN, Mika
    • C22B3/08C22B15/00
    • C22B15/0089C22B15/0071Y02P10/236
    • The invention relates to a method whereby copper is recovered from a copper sulphide ore containing pyrite. According to the method the ore is ground and leached into a solution containing sulphuric acid in atmospheric conditions by means of trivalent copper. As the copper sulphide leaches out, the trivalent iron is reduced to divalent and is oxidised back to trivalent by means of oxygen during leaching. Leaching is carried out in a closed reactor, where the undissolved gas rising from the solution in the upper section of the reactor is circulated back into the suspension of solution, solids and gas. Leaching is performed in the presence of both divalent and trivalent iron and preferably with the dissolved copper acting as a catalyst to promote leaching. The conditions are adjusted to be such that the pyrite of the ore essentially does not dissolve.
    • 本发明涉及从含有硫铁矿的硫化铜矿中回收铜的方法。 根据该方法,将矿石研磨并通过三价铜在大气条件下浸提成含有硫酸的溶液。 当硫化铜浸出时,三价铁还原为二价,并在浸出过程中通过氧气氧化回三价。 浸出在封闭的反应器中进行,其中从反应器上部的溶液中升出的未溶解气体循环回溶液,固体和气体的悬浮液中。 在二价和三价铁存在下进行浸出,优选用溶解的铜作为催化剂促进浸出。 调整条件使得矿石的黄铁矿基本上不溶解。