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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
Applicant: David J. Chaiko , FLSmidth A/S
Inventor： David J. Chaiko , Carlos Eyzaguirre
Abstract: 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
Applicant: FLSmidth A/S , David J. Chaiko
Inventor： David J. Chaiko , Sara (Sally) Rocks
Abstract: 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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公开(公告)号：US20070191510A1
公开(公告)日：2007-08-16
申请号：US11706259
申请日：2007-02-15
Applicant: David J. Chaiko
Inventor： David J. Chaiko
IPC: C08K9/00
CPC classification number: C08K9/04 , C01P2006/22 , C08K9/08 , C09C1/405 , C09C1/42 , C09C1/56 , C09C1/565 , C09C3/10 , Y10T428/29 , Y10T428/2982 , Y10T428/2998
Abstract: Polymer composites and polymer nanocomposites are designed and manufactured by choosing surface-modified fillers having a solid surface energy matching the solid surface energy of the polymer, wherein the advancing contact angle of the polymer on the surface-modified filler is less than about 5 degrees. The fillers are surface-modified by adsorption of amorphous polymeric surfactants, consisting of either mono-modal, bimodal, or multi-modal size distribution. The surface-modified fillers of this invention display a measurable yield stress and a viscosity of about 30.000 Pa·s or less at room temperature, and comprise one or more materials selected from the group consisting of minerals, plant material, animal material, carbon fiber, graphite, amorphous carbon, carbon nanotubes, and glass fiber. This invention also provides a method for manufacturing a polymer nanocomposite which includes exfoliating an amorphous organoclay in a crystalline or semi-crystalline polymer by melt compounding the constituents in the absence of added solvents, activators, edge-modifiers, compatibilizers, or hydrotropes.
Abstract translation: 聚合物复合材料和聚合物纳米复合材料是通过选择具有与聚合物的固体表面能相匹配的固体表面能的表面改性填料来设计和制造的，其中聚合物在表面改性填料上的前进接触角小于约5度。 填料通过吸附无定形聚合物表面活性剂进行表面改性，由单模态，双峰模式或多模式尺寸分布组成。 本发明的表面改性填料在室温下显示出可测量的屈服应力和约30.000Pa.s或更低的粘度，并且包含一种或多种选自矿物，植物材料，动物材料，碳纤维 石墨，无定形碳，碳纳米管和玻璃纤维。 本发明还提供了一种用于制造聚合物纳米复合材料的方法，其包括在不存在添加的溶剂，活化剂，边缘改性剂，相容剂或水溶助长剂的情况下熔融混合所述组分，将结晶或半结晶聚合物中的无定形有机粘土剥离。
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公开(公告)号：US07135508B2
公开(公告)日：2006-11-14
申请号：US10371214
申请日：2003-02-20
Applicant: David J. Chaiko , Argentina A. Leyva
Inventor： David J. Chaiko , Argentina A. Leyva
CPC classification number: C08L23/06 , B82Y30/00 , C08J3/05 , C08J3/201 , C08J3/203 , C08J5/005 , C08J2391/06 , C08K3/34 , C08K3/346 , C08K5/0025 , C08K9/04 , C08K2201/008 , C08L23/04 , C08L31/04 , C08L91/00 , C08L91/06 , C08L2201/54 , C09D131/04 , C09D191/06
Abstract: The invention provides methods for making clay/wax nanocomposites and coatings and films of same with improved chemical resistance and gas barrier properties. The invention further provides methods for making and using emulsions of such clay/wax nanocomposites. Typically, an organophillic clay is combined with a wax or wax/polymer blend such that the cohesion energy of the clay matches that of the wax or wax/polymer blend. Suitable organophilic clays include mica and phyllosilicates that have been surface-treated with edge or edge and surface modifying agents. The resulting nanocomposites have applications as industrial coatings and in protective packaging.
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15.发明授权Method for separating water soluble organics from a process stream by aqueous biphasic extraction 失效通过水相双相萃取从工艺流中分离出水溶性有机物的方法
公开(公告)号：US5948263A
公开(公告)日：1999-09-07
申请号：US873297
申请日：1997-06-11
Applicant: David J. Chaiko , William A. Mego
Inventor： David J. Chaiko , William A. Mego
CPC classification number: C02F9/00 , C02F1/26 , C22B3/0097 , C02F2101/20 , Y02P10/234
Abstract: A method for separating water-miscible organic species from a process stream by aqueous biphasic extraction is provided. An aqueous biphase system is generated by contacting a process stream comprised of water, salt, and organic species with an aqueous polymer solution. The organic species transfer from the salt-rich phase to the polymer-rich phase, and the phases are separated. Next, the polymer is recovered from the loaded polymer phase by selectively extracting the polymer into an organic phase at an elevated temperature, while the organic species remain in a substantially salt-free aqueous solution. Alternatively, the polymer is recovered from the loaded polymer by a temperature induced phase separation (cloud point extraction), whereby the polymer and the organic species separate into two distinct solutions. The method for separating water-miscible organic species is applicable to the treatment of industrial wastewater streams, including the extraction and recovery of complexed metal ions from salt solutions, organic contaminants from mineral processing streams, and colorants from spent dye baths.
Abstract translation: 提供了通过水相双相萃取从工艺流中分离水混溶性有机物质的方法。 通过使由水，盐和有机物质组成的工艺流与聚合物水溶液接触来产生水相双相系统。 有机物质从富盐相转移到富聚合物相，分离相。 接下来，通过在升高的温度下选择性地将聚合物萃取到有机相中，从负载聚合物相中回收聚合物，而有机物质保留在基本上不含盐的水溶液中。 或者，通过温度诱导相分离（浊点提取）从负载的聚合物中回收聚合物，由此聚合物和有机物质分离成两种不同的溶液。 用于分离水混溶性有机物质的方法适用于工业废水流的处理，包括从盐溶液萃取和回收络合的金属离子，来自矿物加工流的有机污染物和来自废染浴的着色剂。
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Patent Agency Ranking
16.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
Applicant: FLSmidth A/S , David J. Chaiko
Inventor： David J. Chaiko , Frank Baczek , Sara (Sally) Rocks , Carlos Eyzaguirre
Abstract: 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：US07919185B2
公开(公告)日：2011-04-05
申请号：US11706259
申请日：2007-02-15
Applicant: David J. Chaiko
Inventor： David J. Chaiko
IPC: C08K9/00
CPC classification number: C08K9/04 , C01P2006/22 , C08K9/08 , C09C1/405 , C09C1/42 , C09C1/56 , C09C1/565 , C09C3/10 , Y10T428/29 , Y10T428/2982 , Y10T428/2998
Abstract: Polymer composites and polymer nanocomposites are designed and manufactured by choosing surface-modified fillers having a solid surface energy matching the solid surface energy of the polymer, wherein the advancing contact angle of the polymer on the surface-modified filler is less than about 5 degrees. The fillers are surface-modified by adsorption of amorphous polymeric surfactants, consisting of either mono-modal, bimodal, or multi-modal size distribution. The surface-modified fillers of this invention display a measurable yield stress and a viscosity of about 30.000 Pa·s or less at room temperature, and comprise one or more materials selected from the group consisting of minerals, plant material, animal material, carbon fiber, graphite, amorphous carbon, carbon nanotubes, and glass fiber. This invention also provides a method for manufacturing a polymer nanocomposite which includes exfoliating an amorphous organoclay in a crystalline or semi-crystalline polymer by melt compounding the constituents in the absence of added solvents, activators, edge-modifiers, compatibilizers, or hydrotropes.
Abstract translation: 聚合物复合材料和聚合物纳米复合材料是通过选择具有与聚合物的固体表面能相匹配的固体表面能的表面改性填料来设计和制造的，其中聚合物在表面改性填料上的前进接触角小于约5度。 填料通过吸附无定形聚合物表面活性剂进行表面改性，由单模态，双峰模式或多模式尺寸分布组成。 本发明的表面改性填料在室温下显示可测量的屈服应力和约30.000Pa·s以下的粘度，并且包含一种或多种选自矿物，植物材料，动物材料，碳纤维 石墨，无定形碳，碳纳米管和玻璃纤维。 本发明还提供了一种用于制造聚合物纳米复合材料的方法，其包括在不存在添加的溶剂，活化剂，边缘改性剂，相容剂或水溶助长剂的情况下熔融混合所述组分，将结晶或半结晶聚合物中的无定形有机粘土剥离。
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公开(公告)号：US07214734B2
公开(公告)日：2007-05-08
申请号：US10863617
申请日：2004-06-08
Applicant: David J. Chaiko
Inventor： David J. Chaiko
IPC: C08K3/34
CPC classification number: B32B7/00 , C09K19/52 , C09K2019/528 , Y10T428/1068
Abstract: The present invention provides barrier films having reduced gas permeability for use in packaging and coating applications. The barrier films comprise an anisotropic liquid crystalline composite layer formed from phyllosilicate-polymer compositions. Phyllosilicate-polymer liquid crystalline compositions of the present invention can contain a high percentage of phyllosilicate while remaining transparent. Because of the ordering of the particles in the liquid crystalline composite, barrier films comprising liquid crystalline composites are particularly useful as barriers to gas transport.
Abstract translation: 本发明提供了用于包装和涂布应用的具有降低的透气性的阻挡膜。 阻挡膜包括由页硅酸盐 - 聚合物组合物形成的各向异性液晶复合层。 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，同时保持透明。 由于液晶复合材料中颗粒的排序，包含液晶复合材料的阻挡膜特别适用于气体输送的屏障。
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公开(公告)号：US07160942B2
公开(公告)日：2007-01-09
申请号：US10609907
申请日：2003-06-30
Applicant: David J. Chaiko
Inventor： David J. Chaiko
IPC: C08K5/34
CPC classification number: C08K9/08
Abstract: Polymer-phyllosilicate nanocomposites that exhibit superior properties compared to the polymer alone, and methods-for producing these polymer-phyllosilicate nanocomposites, are provided. Polymeric surfactant compatabilizers are adsorbed onto the surface of hydrophilic or natural phyllosilicates to facilitate the dispersal and exfoliation of the phyllosilicate in a polymer matrix. Utilizing polymeric glycol based surfactants, polymeric dicarboxylic acids, polymeric diammonium surfactants, and polymeric diamine surfactants as compatabilizers facilitates natural phyllosilicate and hydrophilic organoclay dispersal in a polymer matrix to produce nanocomposites.
Abstract translation: 提供了与单独的聚合物相比表现出优异性能的聚合物页硅酸盐纳米复合材料，以及用于制备这些聚合物页硅酸盐纳米复合材料的方法。 聚合物表面活性剂相容剂被吸附在亲水或天然页硅酸盐的表面上，以促进页硅酸盐在聚合物基体中的分散和剥离。 使用聚合二醇基表面活性剂，聚合二羧酸，聚合二铵表面活性剂和聚合二胺表面活性剂作为相容剂有助于天然页硅酸盐和亲水有机粘土分散在聚合物基质中以产生纳米复合材料。
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公开(公告)号：US07081483B2
公开(公告)日：2006-07-25
申请号：US10452818
申请日：2003-06-02
Applicant: David J. Chaiko
Inventor： David J. Chaiko
IPC: B01F3/12
CPC classification number: C01B33/40 , C01P2004/20 , C01P2006/22 , C09C1/3063 , C09C3/08 , C10M141/06 , C10M141/08 , C10M141/10 , C10M171/001 , C10M2201/02 , C10M2201/062 , C10M2201/082 , C10M2201/085 , C10M2201/086 , C10M2201/102 , C10M2201/103 , C10M2215/04 , C10M2219/044 , C10M2223/06 , C10N2210/02 , C10N2210/03 , C10N2210/07 , C10N2230/60 , C10N2250/12
Abstract: This invention provides phyllosilicates and polyfunctional dispersants which can be manipulated to selectively control the viscosity of phyllosilicate slurries. The polyfunctional dispersants used in the present invention, which include at least three functional groups, increase the dispersion and exfoliation of phyllosilicates in polymers and, when used in conjunction with phyllosilicate slurries, significantly reduce the viscosity of slurries having high concentrations of phyllosilicates. The functional groups of the polyfunctional dispersants are capable of associating with multivalent metal cations and low molecular weight organic polymers, which can be manipulated to substantially increase or decrease the viscosity of the slurry in a concentration dependent manner. The polyfunctional dispersants of the present invention can also impart desirable properties on the phyllosilicate dispersions including corrosion inhibition and enhanced exfoliation of the phyllosilicate platelets.
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