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1.发明申请公开(公告)号：US20170283908A1
公开(公告)日：2017-10-05
申请号：US15509147
申请日：2015-09-14
申请人： David J. CHAIKO , FLSmidth A/S
CPC分类号： C22B15/001 , C22B1/00 , C22B3/02 , C22B3/04 , C22B15/0065 , Y02P10/234
摘要： A method of improving metal leach kinetics and recovery during atmospheric or substantially atmospheric leaching of a metal sulfide is disclosed. In some embodiments, the method may comprise the steps of: (a) producing a metal sulfide flotation concentrate; (b) processing the metal sulfide concentrate in a reductive activation circuit that operates at a first redox potential, to produce a reductively-activated metal sulfide concentrate; and, (c) subsequently processing the activated metal sulfide concentrate in an oxidative leach circuit to extract metal values. In some disclosed embodiments, reductive activation steps may be employed prior to oxidative leaching steps (including heap leap leaching or bio-leaching steps). In some embodiments, physico-chemical processing steps may be employed during reductive activation and/or oxidative leaching. Systems for practicing the aforementioned methods are also disclosed.
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公开(公告)号：US10526681B2
公开(公告)日：2020-01-07
申请号：US15528698
申请日：2015-12-16
申请人： David J. Chaiko , FLSmidth A/S
发明人： David J. Chaiko , Carlos Eyzaguirre
摘要： A system and method for improving leach kinetics and recovery during above-atmospheric leaching of a metal sulfide is disclosed. In some embodiments, the method may comprise the steps of: (a) producing a metal sulfide concentrate [34] via flotation; (b) moving the produced metal sulfide concentrate [34] to at least one chamber [22a] of at least one reactor such as an autoclave [20]; (c) leaching the produced metal sulfide concentrate in said at least one chamber [22a] in the presence of oxygen [82] at a pressure and/or temperature above ambient, and in the presence of partially-used [25] and/or or new [92] grinding media within the at least one chamber [22a]. Systems [10] and apparatus [20, 200] for practicing the aforementioned method are also disclosed.
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公开(公告)号：US10407753B2
公开(公告)日：2019-09-10
申请号：US15535000
申请日：2015-12-21
申请人： FLSmidth A/S , David J. Chaiko
摘要： A method of improving leach kinetics and recovery during atmospheric or above-atmospheric leaching of a metal sulfide is disclosed. A system for practicing the aforementioned method is also disclosed. Apparatus for practicing the aforementioned method is also disclosed. A new composition of matter which is formed by the aforementioned method, and which may be utilized in the system and apparatus is further disclosed. The new composition of matter may exhibit improved leach kinetics, and may have some utility in the semi-conductor arts, including uses within photovoltaic materials.
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4.发明授权公开(公告)号：US11124856B1
公开(公告)日：2021-09-21
申请号：US15526826
申请日：2015-11-20
申请人： FLSmidth A/S , David J. Chaiko
摘要： Systems for improving metal leach kinetics and metal recovery during atmospheric or substantially atmospheric leaching of a metal sulfide are disclosed. In some embodiments, an oxidative leach circuit 200 may employ Mechano-Chemcial/Physico-Chemical processing means for improving leach kinetics and/or metal recovery. In preferred embodiments, the Mechano-Chemcial/Physico-Chemical means comprises various combinations of stirred-tank reactors 202 and shear-tank reactors 212. As will be described herein, the stirred-tank reactors 202 and shear-tank reactors 212 may be arranged in series and/or in parallel with each other, without limitation. In some non-limiting embodiments, a shear-tank reactor 212 may also be disposed, in-situ, within a stirred-tank reactor 202.
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公开(公告)号：US06762233B2
公开(公告)日：2004-07-13
申请号：US09973302
申请日：2001-10-09
申请人： David J. Chaiko
发明人： David J. Chaiko
IPC分类号： C08K334
CPC分类号： B32B7/00 , C09K19/52 , C09K2019/528 , Y10T428/1068
摘要： The present invention provides phyllosilicate-polymer compositions which are useful as liquid crystalline composites. Phyllosilicate-polymer liquid crystalline compositions of the present invention can contain a high percentage of phyllosilicate while at the same time be transparent. Because of the ordering of the particles liquid crystalline composite, liquid crystalline composites are particularly useful as barriers to gas transport.
摘要翻译： 本发明提供了可用作液晶复合材料的页硅酸盐 - 聚合物组合物。 本发明的薄层硅酸盐 - 聚合物液晶组合物可以含有高比例的页硅酸盐，同时是透明的。 由于颗粒液晶复合材料的排列，液晶复合材料特别适用于气体输送的屏障。
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6.发明授权公开(公告)号：US07420071B2
公开(公告)日：2008-09-02
申请号：US11121425
申请日：2005-05-04
申请人： David J. Chaiko
发明人： David J. Chaiko
IPC分类号： C11D1/28 , C07C51/00 , C07C67/00 , C07C229/00 , C11B11/00
CPC分类号： C08K5/19 , B82Y30/00 , C01P2002/88 , C01P2004/64 , C08K9/04 , C09C1/3063 , C09C1/405 , C09C1/42 , C09C3/08
摘要： There are provided novel thermally stable surfactants for use with fillers in the preparation of polymer composites and nanocomposites. Typically, surfactants of the invention are urethanes, ureas or esters of thiocarbamic acid having a hydrocarbyl group of from 10 to 50 carbons and optionally including an ionizable or charged group (e.g., carboxyl group or quaternary amine). Thus, there are provided surfactants having Formula I: wherein the variables are as defined herein. Further provided are methods of making thermally stable surfactants and compositions, including composites and nanocomposites, using fillers coated with the surfactants.
摘要翻译： 在制备聚合物复合材料和纳米复合材料时，提供了与填料一起使用的新型热稳定表面活性剂。 通常，本发明的表面活性剂是具有10至50个碳原子的烃基的氨基甲酸酯，脲或硫代氨基甲酸酯，并且任选地包括可离子化或带电荷的基团（例如羧基或季胺）。 因此，提供了具有式I的表面活性剂：其中变量如本文所定义。 还提供了使用涂覆有表面活性剂的填料制备热稳定表面活性剂和组合物的方法，包括复合材料和纳米复合材料。
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7.发明授权Preparation of a concentrated organophyllosilicate and nanocomposite composition 失效浓缩的有机硅酸盐和纳米复合组合物的制备公开(公告)号：US07163972B2
公开(公告)日：2007-01-16
申请号：US10428348
申请日：2003-05-02
申请人： David J. Chaiko , Suhas G. Niyogi
发明人： David J. Chaiko , Suhas G. Niyogi
摘要： The present invention provide methods for producing a low moisture organophyllosilicate composition using monomers, oligomers, or polymers to displace water associated with the organophyllosilicates in an aqueous organophyllosilicate slurry or filter cake. The invention additionally provides methods for producing organophyllosilicate nanocomposites from the concentrated organophyllosilicate compositions by dispersing the compositions in a polymer matrix.
摘要翻译： 本发明提供使用单体，低聚物或聚合物生产低水分有机木质硅酸盐组合物的方法，以在有机硅酸硅酸盐浆液或滤饼水溶液中置换与有机纤维硅酸盐相关的水。 本发明还提供了通过将组合物分散在聚合物基质中从浓缩的有机木质素硅酸盐组合物制备有机纤维素硅酸盐纳米复合材料的方法。
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公开(公告)号：US06822035B2
公开(公告)日：2004-11-23
申请号：US10078992
申请日：2002-02-20
申请人： David J. Chaiko
发明人： David J. Chaiko
IPC分类号： C08K334
CPC分类号： C08K9/08
摘要： A method for preparing organoclays for use as rheological control agents and in the preparation of nanocomposites. Typically, the clay is dispersed in water, and a specific amount of polymeric hydrotrope, ranging from 0.1 to 15 weight percent relative to the weight of the clay, is adsorbed onto the clay surface. Quaternary amine exchange is also performed on the clay to modify the surface hydrophilic/lipophilic balance (HLB) of the clay.
摘要翻译： 制备用作流变控制剂的有机粘土和制备纳米复合材料的方法。 通常，将粘土分散在水中，相对于粘土的重量，特定量的聚合物水溶助长剂被吸附在粘土表面上，其浓度为0.1至15重量％。 还在粘土上进行季胺交换以改变粘土的表面亲水/亲油平衡（HLB）。
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9.发明授权公开(公告)号：US06172121B2
公开(公告)日：2001-01-09
申请号：US09316449
申请日：1999-05-21
申请人： David J. Chaiko
发明人： David J. Chaiko
IPC分类号： B01J1300
CPC分类号： C08K9/12 , B01J13/0078 , B01J13/0082 , C01B33/44 , C09D5/04 , Y10S507/901
摘要： A process for preparing organoclays as thixotropic agents to control the rheology of water-based paints and other aqueous and polar-organic systems. The process relates to treating low-grade clay ores to achieve highly purified organoclays and/or to incorporate surface modifying agents onto the clay by adsorption and/or to produce highly dispersed organoclays without excessive grinding or high shear dispersion. The process involves the treatment of impure, or run-of-mine, clay using an aqueous biphasic extraction system to produce a highly dispersed clay, free of mineral impurities and with modified surface properties brought about by adsorption of the water-soluble polymers used in generating the aqueous biphasic extraction system. This invention purifies the clay to greater than 95%.
摘要翻译： 制备有机粘土作为触变剂以控制水性涂料和其它水性和极性 - 有机体系的流变性的方法。 该方法涉及处理低级粘土矿石以实现高度纯化的有机粘土和/或通过吸附和/或产生高度分散的有机粘土而将表面改性剂掺入到粘土上而不需要过度研磨或高剪切分散。 该方法包括使用水相双相萃取系统处理不纯或无矿的粘土，以产生高度分散的粘土，不含矿物杂质，并且具有通过吸附水溶性聚合物而引起的改性表面性质 产生水相双相萃取系统。 本发明将粘土净化至95％以上。
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公开(公告)号：US07157516B2
公开(公告)日：2007-01-02
申请号：US10874774
申请日：2004-06-23
申请人： David J. Chaiko
发明人： David J. Chaiko
IPC分类号： C08K3/34
CPC分类号： B82Y30/00 , C08K9/04 , C08K2201/011 , C08L21/00
摘要： The present invention relates to methods for the preparation of clay/polymer nanocomposites. The methods include combining an organophilic clay and a polymer to form a nanocomposite, wherein the organophilic clay and the polymer each have a peak recrystallization temperature, and wherein the organophilic clay peak recrystallization temperature sufficiently matches the polymer peak recrystallization temperature such that the nanocomposite formed has less permeability to a gas than the polymer. Such nanocomposites exhibit 2, 5, 10, or even 100 fold or greater reductions in permeability to, e.g., oxygen, carbon dioxide, or both compared to the polymer. The invention also provides a method of preparing a nanocomposite that includes combining an amorphous organophilic clay and an amorphous polymer, each having a glass transition temperature, wherein the organophilic clay glass transition temperature sufficiently matches the polymer glass transition temperature such that the nanocomposite formed has less permeability to a gas than the polymer.
摘要翻译： 本发明涉及制备粘土/聚合物纳米复合材料的方法。 所述方法包括组合亲有机粘土和聚合物以形成纳米复合材料，其中亲有机粘土和聚合物各自具有峰值再结晶温度，并且其中亲有机粘土峰重结晶温度与聚合物峰重结晶温度充分匹配，使得形成的纳米复合材料具有 比聚合物更少的气体渗透性。 与聚合物相比，这样的纳米复合材料表现出例如氧气，二氧化碳或二者的渗透性的2,5,10或甚至100倍或更多的渗透性。 本发明还提供一种制备纳米复合材料的方法，其包括组合无定形有机粘土和无定形聚合物，各自具有玻璃化转变温度，其中亲有机粘土玻璃化转变温度与聚合物玻璃化转变温度充分匹配，使得形成的纳米复合材料具有较少的 对气体的渗透性高于聚合物。
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