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公开(公告)号：US10773971B2
公开(公告)日：2020-09-15
申请号：US16064069
申请日：2016-12-19
Applicant: EasyMining Sweden AB
Inventor： Yariv Cohen
IPC: C01F11/32 , C02F1/52 , C02F101/12 , C02F103/18
Abstract: A method for recovery of salts comprises providing (210) of an initial aqueous solution comprising ions of Na, K, Cl and optionally Ca or a material which when brought in contact with water forms an initial aqueous solution comprising ions of Na, K, Cl and optionally Ca. The start material is treated (230) into an enriched aqueous solution having a concentration of CaCl2 of at least 15% by weight. The treatment (230) comprises at least one of reduction of water content and addition of Ca. The treatment (230) generates a solid mix of Na Cl and KCl. The solid mix of NaCl and KCl is separated (235) from the enriched aqueous solution, giving a depleted aqueous solution comprising ions of Ca and Cl as main dissolved substances. An arrangement for recovery of salts is also disclosed.
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公开(公告)号：US20230234849A1
公开(公告)日：2023-07-27
申请号：US18008920
申请日：2021-06-11
Applicant: EasyMining Sweden AB
Inventor： Yariv COHEN , Christian TUNSU , Angela VAN DER WERF , Daniel BOMAN
IPC: C01B25/30
CPC classification number: C01B25/306 , C05B7/00
Abstract: An arrangement for production of fully soluble, pure and well-defined mono- or di-potassium phosphates, comprises an extraction section, a stripping section and end treatment arrangements. The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid comprising phosphoric acid. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution. The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous potassium phosphate solution. The end treatment arrangements comprise a source of potassium base, an adding arrangement, a cooling arrangement, a precipitate remover and a recirculation system.
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公开(公告)号：US10745279B2
公开(公告)日：2020-08-18
申请号：US16017839
申请日：2018-06-25
Applicant: EASYMINING SWEDEN AB
Inventor： Yariv Cohen , Patrik Enfält
IPC: C01B25/32 , C01B25/28 , C01B25/36 , C01B25/37 , C01G49/02 , C01G49/10 , C01G49/14 , C01F7/34 , C01F7/56 , C01F7/74 , C01G45/02 , C01G49/00 , C01G1/12 , C05B11/12 , C05B11/16 , C05F7/00 , C02F11/00 , C01F11/46 , C02F1/66 , C02F101/10
Abstract: A method for production of phosphate compounds comprises dissolving of a raw material comprising phosphorus, aluminium and iron, in a mineral acid. Insoluble residues from the dissolving step are separated. Iron hydroxide is added causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed. The phosphate compounds are dissolved by an alkaline solution. Iron hydroxide is filtered out. Lime is added, causing precipitation of calcium phosphate. The precipitated calcium phosphate is separated. The leach solution after the separating of precipitated calcium phosphate is recycled to be used for dissolving phosphate compounds by an alkaline solution.
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公开(公告)号：US20190337816A1
公开(公告)日：2019-11-07
申请号：US16064069
申请日：2016-12-19
Applicant: EasyMining Sweden AB
Inventor： Yariv COHEN
Abstract: A method for recovery of salts comprises providing (210) of an initial aqueous solution comprising ions of Na, K, Cl and optionally Ca or a material which when brought in contact with water forms an initial aqueous solution comprising ions of Na, K, Cl and optionally Ca. The start material is treated (230) into an enriched aqueous solution having a concentration of CaCl2 of at least 15% by weight. The treatment (230) comprises at least one of reduction of water content and addition of Ca. The treatment (230) generates a solid mix of Na Cl and KCl. The solid mix of NaCl and KCl is separated (235) from the enriched aqueous solution, giving a depleted aqueous solution comprising ions of Ca and Cl as main dissolved substances. An arrangement for recovery of salts is also disclosed.
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公开(公告)号：US20150360946A1
公开(公告)日：2015-12-17
申请号：US14409131
申请日：2013-06-19
Applicant: EasyMining Sweden AB
Inventor： Yariv Cohen , Patrik Enfält
CPC classification number: C01B25/462 , B01D9/0013 , B01D11/04 , B01J19/24 , B01J2219/00049 , B01J2219/24 , C01B25/28 , C01B25/461 , C05B7/00 , C05B11/10
Abstract: An arrangement (100) for production of fully soluble, pure and well defined mono- or di-ammonium phosphates, comprises an extraction section (10), a stripping section (20) and end treatment arrangements (90). The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid (1) comprising phosphoric acid and being essentially free from nitrate ions, and a solvent (5) having a solubility in water of less than 2%. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution (4). The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous ammonium phosphate solution, wherein at least 80% of the ammonium phosphate is monoammonium phosphate and/or wherein the solvent is a water-immiscible alcohol. The end treatment arrangements comprise a source of ammonia (60), an adding arrangement (70), a cooling arrangement (50), a precipitate remover (40) and a recirculation system (80).
Abstract translation: 用于生产完全可溶的，纯的和明确定义的磷酸二氢铵或磷酸二铵的装置（100）包括萃取部分（10），汽提部分（20）和末端处理装置（90）。 提取部分在磷酸基本上不含硝酸根离子的进料液（1）和在水中的溶解度小于2％的溶剂（5）之间进行磷 - 液萃取。 汽提段在负载磷酸盐和带状溶液（4）的溶剂之间进行磷酸液体液体萃取。 将贫磷酸盐的溶剂再循环至提取部分以进一步提取磷酸盐。 带状溶液是磷酸铵水溶液，其中至少80％的磷酸铵是磷酸氢二铵和/或其中溶剂是与水不混溶的醇。 末端处理装置包括氨源（60），添加装置（70），冷却装置（50），沉淀物去除器（40）和再循环系统（80）。
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Patent Agency Ranking
公开(公告)号：US20240117462A1
公开(公告)日：2024-04-11
申请号：US18276182
申请日：2022-02-08
Applicant: EasyMining Sweden AB
Inventor： Cristian TUNSU , Angela VAN DER WERF , Hugo ROYEN , Yariv COHEN , John SVÄRD
Abstract: A method for chemical processing of sewage sludge ash comprises dissolving a start material, emanating from sewage sludge ash, in an acid comprising hydrochloric acid. The start material comprising at least silicon and iron compounds. Undissolved residues are separated, whereby a leachate remains. The amount of colloidal silica in the dissolved sewage sludge ash is controlled. At least one of iron and phosphorus is extracted from the leachate by liquid-liquid extraction with an organic solvent. At least a part of a raffinate at least partly depleted in at least one of iron and phosphorus originating from the step of extracting at least one of iron and phosphorus is recirculated for dissolving the start material, emanating from sewage sludge ash. The recirculated part of the raffinate at least partly depleted in at least one of iron and phosphorus comprises chloride ions.
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7.发明申请公开(公告)号：US20180297846A1
公开(公告)日：2018-10-18
申请号：US16017839
申请日：2018-06-25
Applicant: EASYMINING SWEDEN AB
Inventor： Yariv COHEN , Patrik ENFÄLT
IPC: C01B25/32 , C05F7/00 , C05B11/16 , C01B25/28 , C01B25/36 , C05B11/12 , C02F11/00 , C01G49/14 , C01G49/10 , C01G49/02 , C01G49/00 , C01G45/02 , C01G1/12 , C01F11/46 , C01F7/74 , C01F7/56 , C01F7/34 , C01B25/37 , C02F101/10 , C02F1/66
Abstract: A method for production of phosphate compounds comprises dissolving of a raw material comprising phosphorus, aluminium and iron, in a mineral acid. Insoluble residues from the dissolving step are separated. Iron hydroxide is added causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed. The phosphate compounds are dissolved by an alkaline solution. Iron hydroxide is filtered out. Lime is added, causing precipitation of calcium phosphate. The precipitated calcium phosphate is separated. The leach solution after the separating of precipitated calcium phosphate is recycled to be used for dissolving phosphate compounds by an alkaline solution.
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公开(公告)号：US09738522B2
公开(公告)日：2017-08-22
申请号：US14409131
申请日：2013-06-19
Applicant: EasyMining Sweden AB
Inventor： Yariv Cohen , Patrik Enfält
CPC classification number: C01B25/462 , B01D9/0013 , B01D11/04 , B01J19/24 , B01J2219/00049 , B01J2219/24 , C01B25/28 , C01B25/461 , C05B7/00 , C05B11/10
Abstract: An arrangement (100) for production of fully soluble, pure and well defined mono- or di-ammonium phosphates, comprises an extraction section (10), a stripping section (20) and end treatment arrangements (90). The extraction section performs a liquid-liquid extraction of phosphate between a feed liquid (1) comprising phosphoric acid and being essentially free from nitrate ions, and a solvent (5) having a solubility in water of less than 2%. The stripping section performs a liquid-liquid extraction of phosphate between solvent loaded with phosphate and a strip solution (4). The solvent depleted in phosphate is recirculated to the extraction section for further extraction of phosphate. The strip solution is an aqueous ammonium phosphate solution, wherein at least 80% of the ammonium phosphate is monoammonium phosphate and/or wherein the solvent is a water-immiscible alcohol. The end treatment arrangements comprise a source of ammonia (60), an adding arrangement (70), a cooling arrangement (50), a precipitate remover (40) and a recirculation system (80).
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公开(公告)号：US20240101440A1
公开(公告)日：2024-03-28
申请号：US18038490
申请日：2021-11-23
Applicant: EasyMining Sweden AB
Inventor： Yariv COHEN , Angela VAN DER WERF , Viktoria WESTLUND , Cristian TUNSU , Hugo ROYEN
Abstract: A method for recovery of commercial substances from apatite mineral comprises dissolving of apatite mineral in an acid comprising hydrochloride. The dissolution gives a first liquid solution comprising phosphate, calcium and chloride ions. The first liquid solution is treated into a second liquid solution comprising calcium and chloride ions. This treatment in turn comprises extracting of a major part of the phosphate ions with an organic solvent. A bleed solution is removed from the second solution. Solid gypsum comprising at least 70% in a di-hydrate crystal form is precipitated from the second solution. This precipitation of solid gypsum comprises adding the second solution and sulfuric acid simultaneously into a continuous-stirred reactor in the presence of gypsum crystals. Thereby, the precipitation of solid gypsum gives a third liquid solution comprising hydrochloride. An arrangement for recovery of commercial substances from apatite mineral is also presented.
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公开(公告)号：US20220315460A1
公开(公告)日：2022-10-06
申请号：US17619786
申请日：2020-06-11
Applicant: EasyMining Sweden AB
Inventor： Yariv COHEN , Patrik ENFÄLT , John SVÄRD , Carl-Johan HÖGBERG , Emilie NORDSTRÖM
Abstract: A method for decomposing struvite comprises dissolving of a feed material comprising struvite in a mineral acid. Thereby a solution having an acid pH is formed. Magnesium is removed from the solution. The removing of magnesium comprises increasing a pH of the solution to a pH in the range of 4.5 to 6, precipitating magnesium compounds that do not comprise ammonium, and separating the precipitated magnesium compounds from the solution. Thereby, the solution, after the removing of magnesium, comprises an ammonium salt of the mineral acid. An arrangement for performing such a method is also disclosed. Also, a method and arrangement for recovering at least nitrogen from waste material, based on the decomposing of struvite are disclosed.
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