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公开(公告)号：US20230203618A1
公开(公告)日：2023-06-29
申请号：US17906526
申请日：2021-03-18
申请人： BHP CHILE INC
CPC分类号： C22B15/0071 , C22B1/16 , C22B1/24 , C22B3/08 , C22B3/065 , C22B15/0073
摘要： A method of leaching copper from a heap of ore which includes an ore agglomeration step, an ore stacking step wherein agglomerated ore is stacked to form a heap, a curing step, a leach step, and a rinse step, wherein, during the ore agglomeration step the ore is contacted with an acidified solution, nitrates or nitrites, and chloride, to create an oxidative environment prior to the leach step.
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公开(公告)号：US20200325556A1
公开(公告)日：2020-10-15
申请号：US16955948
申请日：2018-12-20
申请人： BHP CHILE INC
摘要： A method of maximising the amount of water available for rinsing in a high-chloride heap leach operation which includes the step of using process make-up water in the range of 0.05 to 0.35 m3/ton of ore to rinse leach residue ore, in the heap, thereby to displace a chloride-containing aqueous liquor from the leached ore.
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公开(公告)号：US20230407435A1
公开(公告)日：2023-12-21
申请号：US17906534
申请日：2021-03-18
申请人： BHP CHILE INC
CPC分类号： C22B15/0071 , C22B1/14 , C22B3/08 , C22B15/0089 , C22B3/18
摘要： An oxidative bioleaching process for leaching a base metal from an ore that includes an ore agglomeration step, an ore stacking step wherein agglomerated ore is stacked to form a heap, a curing step, a rinse step, an inoculation step and a leach step, and wherein, during the ore agglomeration step, the ore is contacted with an acid solution containing nitrate or nitrite thereby to accelerate tthe leaching rate in the leach step.
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公开(公告)号：US09816155B2
公开(公告)日：2017-11-14
申请号：US14422910
申请日：2013-08-21
申请人： BHP Chile Inc.
CPC分类号： C22B15/0069 , C22B1/00 , C22B1/16 , C22B3/06 , C22B3/10 , C22B15/0008 , C22B15/0067 , Y02P10/234 , Y02P10/236
摘要： A process of extracting copper from copper sulphide minerals which is enhanced at solution potentials exceeding 700 mV SHE, in the absence of any microorganism, by contacting the minerals in a pre-treatment phase using an acid solution at a high chloride content containing dissolved copper.
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公开(公告)号：US11732325B2
公开(公告)日：2023-08-22
申请号：US16955936
申请日：2018-12-20
申请人： BHP CHILE INC
发明人： Damaso Barrios Ormeno , Clement Chilowa Chibwana , Johannes Mattheus Strauss , Gary Vernon Rorke
IPC分类号： C22B15/00
CPC分类号： C22B15/0084 , C22B15/0008 , C22B15/0069
摘要： A method of controlling the acid balance in a high chloride heap leach process tomaximise the copper dissolution in a cure step and to increase overall copper recovery which include an agglomeration stage in which acid and process solutions are combined with the ore prior to stacking to form a heap followed by a cure phase to leach a portion of the copper in the ore in the heap followed by an irrigated leach phase in which the remaining copper minerals are leached and copper is recovered from a pregnant leach solution by a solvent extraction step followed by an electrowinning step wherein the acid concentration in the pregnant leach solution which reports to the solvent extraction step is less than 10 g/L to allow effective copper recovery from the pregnant leach solution in the solvent extraction step.
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公开(公告)号：US20150232963A1
公开(公告)日：2015-08-20
申请号：US14422910
申请日：2013-08-21
申请人： BHP Chile Inc.
CPC分类号： C22B15/0069 , C22B1/00 , C22B1/16 , C22B3/06 , C22B3/10 , C22B15/0008 , C22B15/0067 , Y02P10/234 , Y02P10/236
摘要： A process of extracting copper from copper sulphide minerals which is enhanced at solution potentials exceeding 700 mV SHE, in the absence of any microorganism, by contacting the minerals in a pre-treatment phase using an acid solution at a high chloride content containing dissolved copper.
摘要翻译： 在不存在任何微生物的情况下，通过使用含有溶解铜的高氯化物含量的酸溶液在预处理阶段使矿物接触，从溶解电位超过700mV SHE的硫化铜矿物中提取铜的方法。
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公开(公告)号：US20210207245A1
公开(公告)日：2021-07-08
申请号：US16955936
申请日：2018-12-20
申请人： BHP CHILE INC
发明人： Damaso BARRIOS ORMENO , Clement Chilowa CHIBWANA , Johannes Mattheus STRAUSS , Gary Vernon RORKE
IPC分类号： C22B15/00
摘要： A method of controlling the acid balance in a high chloride heap leach process tomaximise the copper dissolution in a cure step and to increase overall copper recovery which include an agglomeration stage in which acid and process solutions are combined with the ore prior to stacking to form a heap followed by a cure phase to leach a portion of the copper in the ore in the heap followed by an irrigated leach phase in which the remaining copper minerals are leached and copper is recovered from a pregnant leach solution by a solvent extraction step followed by an electrowinning step wherein the acid concentration in the pregnant leach solution which reports to the solvent extraction step is less than 10 g/L to allow effective copper recovery from the pregnant leach solution in the solvent extraction step.
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公开(公告)号：US10041143B2
公开(公告)日：2018-08-07
申请号：US15030813
申请日：2014-10-22
申请人： BHP Chile Inc.
CPC分类号： C22B15/0071 , C22B3/08 , C22B15/0067 , C25C1/12 , Y02P10/236
摘要： A method of leaching copper from a heap of ore that includes at least one resting step followed by an irrigation step, wherein, during the irrigation step a leach solution that contains chloride ions is applied to the ore at a higher rate than during the resting step.
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