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.

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）。

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).

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.