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公开(公告)号：US20090180945A1
公开(公告)日：2009-07-16
申请号：US12351058
申请日：2009-01-09
IPC分类号： C01B21/20
CPC分类号： C01B17/20 , C01C1/24 , C01F5/08 , C01F11/46 , C02F1/441 , C02F1/444 , C02F1/5236 , C02F1/5254 , C02F1/72 , C02F9/00 , C02F2101/20 , C02F2103/16 , C22B3/44 , C22B3/46 , C22B7/006 , C22B23/043 , C22B23/0453 , C22B23/0461 , Y02P10/234
摘要： A process for recovering metals such as Ni, Co, Mn, Cu, Zn, among others, through precipitation as sulphides, enabling recovery of magnesium in the form of hydroxide, carbonate and oxide and providing recovery of sulphate as gypsum and ammonium sulphate. Liquid phase, after full treatment, comprises recovered water with a quality proper for total reuse in industrial process.This process of liquid and solid effluent treatment is provided with flexibility to process several types of effluents presenting wide variations in their chemical composition. The main steps of this process are: (1) equalization of liquid effluent, (2) precipitation of metals as sulphides, (3) oxidation of metallic sulphides and crystallization as metallic sulphates, (4) precipitation of magnesium as hydroxide and calcination thereof into magnesium oxide (5) recovery of ammonia, (6) preconcentration of the remaining saline solution, (7) evaporation/crystallization of ammonium sulphate, (8) storage of recovered water, (9) partial or total precipitation of sulphate contained in the effluent with quicklime, (10) segregated storage of gypsum and gypsum-magnesium mixture, (11) softening of the remaining solution and (12) storage of softening water.
摘要翻译： 用于通过作为硫化物沉淀来回收诸如Ni，Co，Mn，Cu，Zn等金属的方法，使得能够回收氢氧化物，碳酸盐和氧化物形式的镁，并提供硫酸盐作为石膏和硫酸铵的回收。 完全处理后的液相包含回收水，其质量适用于工业过程中的总再利用。 提供这种液体和固体流出物处理过程具有处理几种类型的具有其化学组成变化很大变化的流出物的灵活性。 这个过程的主要步骤是：（1）液体流出物的均衡，（2）作为硫化物的金属沉淀，（3）金属硫化物的氧化和作为金属硫酸盐的结晶，（4）将氢氧化镁沉淀并煅烧成 氧化镁（5）回收氨，（6）剩余盐水溶液的预浓缩，（7）硫酸铵蒸发/结晶，（8）回收水的储存，（9）流出物中含有的硫酸盐的部分或全部沉淀 生石灰，（10）分离储存石膏和石膏镁混合物，（11）软化剩余溶液和（12）软化水的储存。
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2.发明申请公开(公告)号：US20090241733A1
公开(公告)日：2009-10-01
申请号：US12306880
申请日：2007-06-25
CPC分类号： C22B3/44 , C22B23/0415 , C22B23/0461 , Y02P10/234
摘要： The present invention concerns a process for the instantaneous control of the precipitation of nickel and cobalt present in a leach liquor by adjustment of the pH-value. Said leach liquor is obtained by pressurized acidic leaching of laterile ores and additionally contains aluminium, ferric and ferrous iron and chromium among others. The process comprises the following steps: precipitation of aluminium, ferric and ferrous iron, chromium etc. by increasing the pH- value by adding a suitable reagent such as lime and/or limestone, following precipitation of nickel and cobalt by further increasing the pH-value of the liquor, finally separating the precipitate from the low-content nickel and cobalt solution. The nickel and cobalt precipitate can be used for further refinement. In order to keep the process conditions constant, the steps of increasing the pH-value are controlled simultaneously.
摘要翻译： 本发明涉及一种通过调节pH值来瞬间控制浸出液中存在的镍和钴沉淀的方法。 所述浸出液是通过酸化矿石的酸性浸出获得的，另外还含有铝，铁和二价铁和铬等。 该方法包括以下步骤：通过添加合适的试剂如石灰和/或石灰石，在镍和钴沉淀之后，通过进一步增加pH值来沉淀铝，三价铁和二价铁，铬等，通过增加pH值， 最终将沉淀物从低含量的镍和钴溶液中分离出来。 镍和钴沉淀物可用于进一步精制。 为了使工艺条件保持恒定，同时控制pH值增加的步骤。
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公开(公告)号：US08043585B2
公开(公告)日：2011-10-25
申请号：US12351058
申请日：2009-01-09
IPC分类号： C01G1/00
CPC分类号： C01B17/20 , C01C1/24 , C01F5/08 , C01F11/46 , C02F1/441 , C02F1/444 , C02F1/5236 , C02F1/5254 , C02F1/72 , C02F9/00 , C02F2101/20 , C02F2103/16 , C22B3/44 , C22B3/46 , C22B7/006 , C22B23/043 , C22B23/0453 , C22B23/0461 , Y02P10/234
摘要： A process for recovering metals such as Ni, Co, Mn, Cu, Zn, among others, through precipitation as sulphides, enabling recovery of magnesium in the form of hydroxide, carbonate and oxide and providing recovery of sulphate as gypsum and ammonium sulphate. Liquid phase, after full treatment, comprises recovered water with a quality proper for total reuse in industrial process.This process of liquid and solid effluent treatment is provided with flexibility to process several types of effluents presenting wide variations in their chemical composition. The main steps of this process are: (1) equalization of liquid effluent, (2) precipitation of metals as sulphides, (3) oxidation of metallic sulphides and crystallization as metallic sulphates, (4) precipitation of magnesium as hydroxide and calcination thereof into magnesium oxide (5) recovery of ammonia, (6) preconcentration of the remaining saline solution, (7) evaporation/crystallization of ammonium sulphate, (8) storage of recovered water, (9) partial or total precipitation of sulphate contained in the effluent with quicklime, (10) segregated storage of gypsum and gypsum-magnesium mixture, (11) softening of the remaining solution and (12) storage of softening water.
摘要翻译： 用于通过作为硫化物沉淀来回收诸如Ni，Co，Mn，Cu，Zn等金属的方法，使得能够回收氢氧化物，碳酸盐和氧化物形式的镁，并提供硫酸盐作为石膏和硫酸铵的回收。 完全处理后的液相包含回收水，其质量适用于工业过程中的总再利用。 提供这种液体和固体流出物处理过程具有处理几种类型的具有其化学组成变化很大变化的流出物的灵活性。 这个过程的主要步骤是：（1）液体流出物的均衡，（2）作为硫化物的金属沉淀，（3）金属硫化物的氧化和作为金属硫酸盐的结晶，（4）将氢氧化镁沉淀并煅烧成 氧化镁（5）回收氨，（6）剩余盐水溶液的预浓缩，（7）硫酸铵蒸发/结晶，（8）回收水的储存，（9）流出物中含有的硫酸盐的部分或全部沉淀 生石灰，（10）分离储存石膏和石膏镁混合物，（11）软化剩余溶液和（12）软化水的储存。
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