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公开(公告)号：US11041227B2
公开(公告)日：2021-06-22
申请号：US16302204
申请日：2017-05-17
Applicant: BROMINE COMPOUNDS LTD. , TENOVA ADVANCED TECHNOLOGIES LTD
Inventor： Keren Larmour-Ship , Tal Fabian , Alan Miller , Sharon Krumbein Rubin , Elizabeta Shandalov , Mira Bergstein Freiberg
Abstract: A process for recovering gold from a gold-containing raw material, comprising leaching the gold-containing material with an aqueous solution comprising elemental bromine and bromide source to form a pregnant leach solution with the gold dissolved therein; separating said pregnant leach solution from the gold-depleted raw material, removing elemental bromine from said pregnant leach solution, extracting the gold from the pregnant leach solution in an acidic environment into an organic extractant, to form a gold-loaded extract and bromide-containing raffinate, stripping the extract with an alkaline aqueous solution to form a gold-bearing aqueous solution, generating gold (Au0) and treating bromide-containing stream(s) to produce recyclable elemental bromine.
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公开(公告)号：US09963359B2
公开(公告)日：2018-05-08
申请号：US14763700
申请日：2014-01-27
Applicant: BROMINE COMPOUNDS LTD.
Inventor： Emanuel Korngold , Mordechai Cohen , Mira Bergstein Freiberg , Sharon Krumbein Rubin
IPC: C02F1/42 , B01J41/05 , C02F101/12 , C02F103/18
CPC classification number: C02F1/42 , B01J41/05 , C02F2001/422 , C02F2101/12 , C02F2103/18 , C02F2303/16 , C02F2303/185
Abstract: The invention relates to a process for recovering bromide from a halide-containing aqueous stream, comprising the steps of: providing a feed of halide-containing aqueous stream; contacting an anion-exchange resin with said feed, to form halide-loaded resin; treating said halide-loaded resin with a regenerant and subsequently with a rinse to produce, in succession, a chloride-rich solution, a mixed chloride/bromide solution, a bromide-rich solution and an essentially halide-free solution; directing said mixed chloride/bromide solution to said feed; processing said bromide-rich solution to recover one or more bromide products; and utilizing said essentially halide-free solution for regenerant dilution and/or rinsing of said resin. An apparatus for carrying out the process is also disclosed.
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公开(公告)号：US09850129B2
公开(公告)日：2017-12-26
申请号：US14762682
申请日：2014-01-27
Applicant: BROMINE COMPOUNDS LTD.
Inventor： Sarit Sarmili , Gideon Friedman , Eyal Barnea , David Fuks , Mira Bergstein Freiberg
CPC classification number: C01B9/04 , B01D11/0446 , B01D11/0492 , C01B21/48 , C01F11/34
Abstract: A solvent extraction process for recovering bromide from a sulfate-containing aqueous stream, the process comprises an extraction step wherein said aqueous stream is mixed with an extraction medium comprising a tertiary amine extractant dissolved in one or more water-immiscible organic solvents, wherein said mixing is carried out in a strongly acidic environment, thereby forming bromide-containing extract and a raffinate with a reduced bromide level, wherein the bromide-containing extract is optionally treated to further minimize the presence of sulfate and is subsequently combined with an aqueous calcium source to form calcium bromide.
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公开(公告)号：US20150329370A1
公开(公告)日：2015-11-19
申请号：US14762682
申请日：2014-01-27
Applicant: BROMINE COMPOUNDS LTD.
Inventor： Sarit SARMILI , Gldeon Friedman , Eyal Barnea , David Fuks , Mira Bergstein Freiberg
CPC classification number: C01B9/04 , B01D11/0446 , B01D11/0492 , C01B21/48 , C01F11/34
Abstract: A solvent extraction process for recovering bromide from a sulfate-containing aqueous stream, the process comprises an extraction step wherein said aqueous stream is mixed with an extraction medium comprising a tertiary amine extractant dissolved in one or more water-immiscible organic solvents, wherein said mixing is carried out in a strongly acidic environment, thereby forming bromide-containing extract and a raffinate with a reduced bromide level, wherein the bromide-containing extract is optionally treated to further minimize the presence of sulfate and is subsequently combined with an aqueous calcium source to form calcium bromide.
Abstract translation: 一种用于从含硫酸盐的水流中回收溴化物的溶剂萃取方法，该方法包括萃取步骤，其中所述含水物流与包含溶解在一种或多种与水不混溶的有机溶剂中的叔胺萃取剂的萃取介质混合，其中所述混合 在强酸性环境中进行，从而形成含溴化物的提取物和具有降低的溴化物含量的残液，其中任选地处理含溴化物的提取物以进一步最小化硫酸盐的存在，并随后与钙水源合并， 形成溴化钙。
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