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公开(公告)号：US20170369968A1
公开(公告)日：2017-12-28
申请号：US15535000
申请日：2015-12-21
Applicant: FLSmidth A/S
Inventor： David J. Chaiko , Sara (Sally) Rocks
CPC classification number: C22B15/0071 , C01G1/12 , C01G3/10 , C01G49/14 , C22B3/04 , C22B3/08 , C22B4/04 , C22B15/00 , C22B15/001 , Y02P10/234 , Y02P10/236
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：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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3.发明申请ACTIVATED SEMICONDUCTOR COMPOUNDS HAVING INCREASED ELECTROCHEMICAL REACTIVITY AND ASSOCIATED METHODS THEREOF 审中-公开具有增加电化学反应活性的活性半导体化合物及其相关方法公开(公告)号：US20160201162A1
公开(公告)日：2016-07-14
申请号：US14992783
申请日：2016-01-11
Applicant: FLSmidth A/S
Inventor： David J. Chaiko , Sara (Sally) Rocks
CPC classification number: C22B15/0071 , C22B3/08 , C22B3/22 , H01B1/02 , Y02P10/236
Abstract: Disclosed are novel compounds which display enhanced reactive properties due, in part, to induced lattice strain. The new compounds demonstrate accelerated leaching of copper under oxidizing conditions. The activated compounds are produced under conditions of time, temperature, Eh, and pH which retard the rate of lattice strain relaxation. Further disclosed are methods of making and using the novel compounds.
Abstract translation: 公开了由于部分地诱导晶格应变而显示出增强的反应性质的新型化合物。 新化合物在氧化条件下显示铜的加速浸出。 活化的化合物在时间，温度，Eh和pH条件下产生，这些条件可以延缓晶格应变松弛的速率。 还公开了制备和使用新化合物的方法。
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公开(公告)号：US10689732B2
公开(公告)日：2020-06-23
申请号：US16465856
申请日：2017-11-30
Applicant: FLSmidth A/S
Inventor： David John Chaiko , Frank Baczek , Sara (Sally) Rocks
Abstract: A method of controlling iron in a hydrometallurgical process is disclosed. The method may comprise the steps of: leaching (14, 114) a feed slurry (2, 102); forming a pregnant leach solution (12a, 12b; 112a, 112b); removing a first leach residue (18, 118) from the pregnant leach solution (12a, 12b); and sending a portion (12b, 112b) of the pregnant leach solution (12a, 12b) and/or raffinate (22, 122) produced therefrom, to an iron removal process (34, 134). According to some preferred embodiments, the iron removal process (34, 134) may comprise the steps of: sequentially processing the pregnant leach solution (12a, 12b) and/or raffinate (22, 122) produced therefrom in a first reactor (R1) a second reactor (R2), and a third reactor (R3); maintaining a pH level of the first reactor (R1) above 4, by virtue of the addition of a first base; maintaining a pH level of the second (R2) and/or third (R3) reactors above 8.5, by virtue of a second base; and forming solids (46) comprising magnetite (68). The method may further comprise the steps of performing a solid liquid separation step (36) after the iron removal process (34, 134); and performing a magnetic separation step (64) to remove magnetite (68) from said solids comprising magnetite (68), without limitation. A system for performing the method is also disclosed.
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5.发明申请公开(公告)号：US20170356063A1
公开(公告)日：2017-12-14
申请号：US15527489
申请日：2015-11-20
Applicant: FLSmidth A/S
Inventor： David J. Chaiko , Frank Baczek , Sara (Sally) Rocks , Carlos Eyzaguirre
Abstract: 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 step of processing a metal sulfide concentrate in a reductive activation circuit 220 that operates at a first redox potential, to produce a reductively-activated metal sulfide concentrate. The method may further comprise the step of subsequently processing the activated metal sulfide concentrate in an oxidative leach circuit 240 to extract metal values. In some disclosed embodiments, reductive activation steps and/or oxidative dissolution steps may employ mechano-chemical and/or physico-chemical processing of particles or agglomerates thereof. Reductive activation may be made prior to heap leaching or bio-leaching operations to improve metal extraction. Systems for practicing the aforementioned methods are also disclosed.
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Patent Agency Ranking
公开(公告)号：US11898221B2
公开(公告)日：2024-02-13
申请号：US16992644
申请日：2020-08-13
Applicant: FLSmidth A/S
Inventor： David J. Chaiko , Frank Baczek , Sara (Sally) Rocks , Carlos Eyzaguirre
CPC classification number: C22B3/04 , C22B3/02 , C22B15/0065 , C22B15/0095 , Y02P10/20
Abstract: 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 step of processing a metal sulfide concentrate in a reductive activation circuit 220 that operates at a first redox potential, to produce a reductively-activated metal sulfide concentrate. The method may further comprise the step of subsequently processing the activated metal sulfide concentrate in an oxidative leach circuit 240 to extract metal values. In some disclosed embodiments, reductive activation steps and/or oxidative dissolution steps may employ mechano-chemical and/or physico-chemical processing of particles or agglomerates thereof. Reductive activation may be made prior to heap leaching or bio-leaching operations to improve metal extraction. Systems for practicing the aforementioned methods are also disclosed.
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公开(公告)号：US20190309391A1
公开(公告)日：2019-10-10
申请号：US16465856
申请日：2017-11-30
Applicant: FLSmidth A/S
Inventor： David John Chaiko , Frank Baczek , Sara (Sally) Rocks
Abstract: A method of controlling iron in a hydrometallurgical process is disclosed. The method may comprise the steps of: leaching (14, 114) a feed slurry (2, 102); forming a pregnant leach solution (12a, 12b; 112a, 112b); removing a first leach residue (18, 118) from the pregnant leach solution (12a, 12b); and sending a portion (12b, 112b) of the pregnant leach solution (12a, 12b) and/or raffinate (22, 122) produced therefrom, to an iron removal process (34, 134). According to some preferred embodiments, the iron removal process (34, 134) may comprise the steps of: sequentially processing the pregnant leach solution (12a, 12b) and/or raffinate (22, 122) produced therefrom in a first reactor (R1) a second reactor (R2), and a third reactor (R3); maintaining a pH level of the first reactor (R1) above 4, by virtue of the addition of a first base; maintaining a pH level of the second (R2) and/or third (R3) reactors above 8.5, by virtue of a second base; and forming solids (46) comprising magnetite (68). The method may further comprise the steps of performing a solid liquid separation step (36) after the iron removal process (34, 134); and performing a magnetic separation step (64) to remove magnetite (68) from said solids comprising magnetite (68), without limitation. A system for performing the method is also disclosed.
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8.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：US20210062294A1
公开(公告)日：2021-03-04
申请号：US16992644
申请日：2020-08-13
Applicant: FLSmidth A/S
Inventor： David J. Chaiko , Frank Baczek , Sara (Sally) Rocks , Carlos Eyzaguirre
Abstract: 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 step of processing a metal sulfide concentrate in a reductive activation circuit 220 that operates at a first redox potential, to produce a reductively-activated metal sulfide concentrate. The method may further comprise the step of subsequently processing the activated metal sulfide concentrate in an oxidative leach circuit 240 to extract metal values. In some disclosed embodiments, reductive activation steps and/or oxidative dissolution steps may employ mechano-chemical and/or physico-chemical processing of particles or agglomerates thereof. Reductive activation may be made prior to heap leaching or bio-leaching operations to improve metal extraction. Systems for practicing the aforementioned methods are also disclosed.
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10.发明授权公开(公告)号：US10781501B2
公开(公告)日：2020-09-22
申请号：US15527489
申请日：2015-11-20
Applicant: FLSmidth A/S
Inventor： David J. Chaiko , Frank Baczek , Sara (Sally) Rocks , Carlos Eyzaguirre
Abstract: 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 step of processing a metal sulfide concentrate in a reductive activation circuit 220 that operates at a first redox potential, to produce a reductively-activated metal sulfide concentrate. The method may further comprise the step of subsequently processing the activated metal sulfide concentrate in an oxidative leach circuit 240 to extract metal values. In some disclosed embodiments, reductive activation steps and/or oxidative dissolution steps may employ mechano-chemical and/or physico-chemical processing of particles or agglomerates thereof. Reductive activation may be made prior to heap leaching or bio-leaching operations to improve metal extraction. Systems for practicing the aforementioned methods are also disclosed.
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