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1. 发明授权

US10745279B2 Production of phosphate compounds from materials containing phosphorus and at least one of iron and aluminium 有权
公开(公告)号：US10745279B2
公开(公告)日：2020-08-18
申请号：US16017839
申请日：2018-06-25
申请人： EASYMINING SWEDEN AB
发明人： Yariv Cohen , Patrik Enfält
IPC分类号： 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
摘要： 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.

2. 发明授权

US10773971B2 Method and arrangement for recovery of salt 有权
公开(公告)号：US10773971B2
公开(公告)日：2020-09-15
申请号：US16064069
申请日：2016-12-19
申请人： EasyMining Sweden AB
发明人： Yariv Cohen
IPC分类号： C01F11/32 , C02F1/52 , C02F101/12 , C02F103/18
摘要： 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.

3. 发明申请

US20220315460A1 DECOMPOSITION OF STRUVITE 有权
公开(公告)号：US20220315460A1
公开(公告)日：2022-10-06
申请号：US17619786
申请日：2020-06-11
申请人： EasyMining Sweden AB
发明人： Yariv COHEN , Patrik ENFÄLT , John SVÄRD , Carl-Johan HÖGBERG , Emilie NORDSTRÖM
IPC分类号： C02F1/66 , C02F1/52
摘要： 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.

4. 发明授权

US10023464B2 Production of phosphate compounds from materials containing phosphorus and at least one of iron and aluminium 有权
公开(公告)号：US10023464B2
公开(公告)日：2018-07-17
申请号：US14888232
申请日：2014-11-02
申请人： EASYMINING SWEDEN AB
发明人： Yariv Cohen , Patrik Enfält
IPC分类号： C01B25/32 , C05B11/12 , C05B11/16 , C05F7/00 , C02F11/00 , C01B25/28 , C01B25/36 , C01B25/37 , C01G49/02 , C01G49/10 , C01G49/14 , C01F7/34 , C01F7/56 , C01F7/74 , C01G45/02 , C01G49/00 , C01G1/12 , C01F11/46 , C02F1/66 , C02F101/10
摘要： A method for concentration of phosphate compounds comprises dissolving (205) of sludge ash in hydrochloric acid. Insoluble residues are separated (210), thereby forming a first leach solution. A mole ratio of phosphorus to a sum of ferric iron and aluminum in the first leach solution is controlled (215) to be larger than 1. A base is added (220) to the first leach solution in an amount causing precipitation of phosphate compounds. The precipitated phosphate compounds are removed (225) from the first leach solution. Sulphuric acid is added (240) to the first leach solution, causing precipitation of sulphate compounds. The precipitated sulphate compounds are separated (245) from the first leach solution. At least a part of the leach solution is recycled (248) as the hydrochloric acid used for the dissolving of sludge ash. Further methods for processing the precipitated phosphate compounds are presented as well as arrangements for performing the methods.

5. 发明申请

US20180297846A1 Production of Phosphate Compounds from Materials Containing Phosphorus and at Least One of Iron and Aluminium 审中-公开
公开(公告)号：US20180297846A1
公开(公告)日：2018-10-18
申请号：US16017839
申请日：2018-06-25
申请人： EASYMINING SWEDEN AB
发明人： Yariv COHEN , Patrik ENFÄLT
IPC分类号： 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
摘要： 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.

6. 发明授权

US09738522B2 Production of ammonium phosphates 有权
公开(公告)号：US09738522B2
公开(公告)日：2017-08-22
申请号：US14409131
申请日：2013-06-19
申请人： EasyMining Sweden AB
发明人： Yariv Cohen , Patrik Enfält
IPC分类号： C05B7/00 , C01B25/28 , B01J19/24 , C01B25/46 , B01D11/04 , B01D9/00 , C05B11/10
CPC分类号： C01B25/462 , B01D9/0013 , B01D11/04 , B01J19/24 , B01J2219/00049 , B01J2219/24 , C01B25/28 , C01B25/461 , C05B7/00 , C05B11/10
摘要： 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).

7. 发明申请

US20190337816A1 METHOD AND ARRANGEMENT FOR RECOVERY OF SALT 审中-公开
公开(公告)号：US20190337816A1
公开(公告)日：2019-11-07
申请号：US16064069
申请日：2016-12-19
申请人： EasyMining Sweden AB
发明人： Yariv COHEN
IPC分类号： C01F11/32 , C02F1/52
摘要： 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.

8. 发明申请

US20150360946A1 Production of Ammonium Phosphates 有权
标题翻译：生产磷酸铵
公开(公告)号：US20150360946A1
公开(公告)日：2015-12-17
申请号：US14409131
申请日：2013-06-19
申请人： EasyMining Sweden AB
发明人： Yariv Cohen , Patrik Enfält
IPC分类号： C01B25/46 , C05B11/10 , B01J19/24 , C01B25/28 , B01D11/04
CPC分类号： C01B25/462 , B01D9/0013 , B01D11/04 , B01J19/24 , B01J2219/00049 , B01J2219/24 , C01B25/28 , C01B25/461 , C05B7/00 , C05B11/10
摘要： 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).
摘要翻译：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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