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31. 发明授权

US3134644A Production of super phosphoric acid 失效
标题翻译：生产超磷酸
公开(公告)号：US3134644A
公开(公告)日：1964-05-26
申请号：US12732861
申请日：1961-07-27
申请人： FMC CORP
发明人： SHAFFERY RAYMOND J , SMITH ROBERT H , GROENING HARVEY F
IPC分类号： C01B25/24
CPC分类号： C01B25/24

32. 发明授权

US2999010A Manufacture of superphosphoric acid 失效
标题翻译：超级磷酸的制造
公开(公告)号：US2999010A
公开(公告)日：1961-09-05
申请号：US64844557
申请日：1957-03-25
申请人： TENNESSEE VALLEY AUTHORITY
发明人： STRIPLIN JR MARCUS M , DAVID MCKNIGHT , MARKS ELLIS C
IPC分类号： C01B25/24
CPC分类号： C01B25/24

33. 发明授权

US2247373A Making phosphoric acid 失效
标题翻译：制磷酸
公开(公告)号：US2247373A
公开(公告)日：1941-07-01
申请号：US25254039
申请日：1939-01-24
申请人： HARTFORD CHARLES E , STRIPLIN JR MARCUS M
发明人： HARTFORD CHARLES E , STRIPLIN JR MARCUS M
IPC分类号： C01B25/24
CPC分类号： C01B25/24

34. 发明授权

US06861039B1 Method for purification of phosphoric acid high purity polyphosphoric acid 失效
标题翻译：磷酸高纯度多磷酸的纯化方法
公开(公告)号：US06861039B1
公开(公告)日：2005-03-01
申请号：US09869379
申请日：1999-12-24
申请人： Kiyoshi Hotta , Fuyuhiko Kubota
发明人： Kiyoshi Hotta , Fuyuhiko Kubota
IPC分类号： C01B25/237 , C01B25/24 , C01B25/234
CPC分类号： C01B25/24 , C01B25/237
摘要： The present invention provides a purification method of phosphoric acid, which includes bringing phosphoric acid containing arsenic into contact with hydrogen halide, thereby to remove the arsenic from the phosphoric acid, and a purification method of phosphoric acid, which includes bringing phosphoric acid containing arsenic into contact with hydrogen halide in the presence of a compound capable of generating hydrogen halide under acidic conditions. According to the method for purifying phosphoric acid of the present invention, a completely new method for removing arsenic in phosphoric acid is provided, which does not require a filtration or deaeration step or shows a great amount of residual sodium, unlike a sulfide coagulation method. This method is applicable to high concentration phosphoric acid, particularly polyphosphoric acid, and can be practiced at a low cost. In addition, a conventionally nonexistent high purity polyphosphoric acid having an arsenic (As) content of not more than 1 ppm and low contents of heavy metal, silica, sodium and the like can be provided.
摘要翻译：本发明提供一种磷酸的提纯方法，其包括使含有砷的磷酸与卤化氢接触，从而从磷酸中除去砷，以及磷酸的提纯方法，其包括将含有砷的磷酸引入在酸性条件下能够产生卤化氢的化合物存在下与卤化氢接触。根据本发明的磷酸的纯化方法，与硫化物凝固法不同，提供了一种全新的除磷方法，其不需要过滤或脱气步骤或显示大量的残余钠。该方法适用于高浓度磷酸，特别是多磷酸，可以低成本实施。此外，可以提供砷（As）含量不超过1ppm，重金属，二氧化硅，钠等含量低的常规不存在的高纯度多磷酸。

35. 发明授权

US5951831A Condensation polymerization of phosphorus containing compounds 失效
标题翻译：含磷化合物的缩聚
公开(公告)号：US5951831A
公开(公告)日：1999-09-14
申请号：US891638
申请日：1997-07-11
申请人： John P. Godber , Herbert Jenkins
发明人： John P. Godber , Herbert Jenkins
IPC分类号： C01B25/24 , C01B25/38 , C01B25/39 , C01B53/00 , C01B25/00
CPC分类号： C01B25/38 , C01B25/24 , C01B25/385 , C01B25/39
摘要： A process of using microwave radiation to effect condensation polymerization of phosphorus oxyacids and their salts having at least two free hydroxyl groups attached to the same phosphorus atom.
摘要翻译：使用微波辐射来实现含磷酸及其具有至少两个连接到相同磷原子上的游离羟基的盐的缩聚的方法。

36. 发明授权

US4445926A Process for blending phosphoric acids of differing impurity content 失效
标题翻译：掺杂不同杂质含量的磷酸的方法
公开(公告)号：US4445926A
公开(公告)日：1984-05-01
申请号：US318502
申请日：1981-11-05
申请人： Harold E. Mills , David L. Murdock , Richard M. Ramer , Francis M. Sale
发明人： Harold E. Mills , David L. Murdock , Richard M. Ramer , Francis M. Sale
IPC分类号： C01B25/235 , C01B25/24 , C05B7/00
CPC分类号： C01B25/24 , C01B25/235
摘要： Phosphoric acids of significantly different content of soluble impurities, especially magnesium compounds, can be blended to produce a phosphoric acid with a decreased tendency for forming detrimental solids when converted to a liquid fertilizer or on storage, or during transportation as when the acid is transported by ocean vessel or railroad tank car. The blending can be effected either before or after a concentration step or steps (e.g., evaporation to "merchant grade" or to superphosphoric acid). For example, wet process phosphoric acid produced by a dihydrate or gypsum process can be blended with a phosphoric acid produced by a hemihydrate process.
摘要翻译：可以混合显着不同含量的可溶性杂质，特别是镁化合物的磷酸，以产生磷酸，当转化为液体肥料或储存时或在运输期间，当酸运输时，形成有害固体的倾向降低远洋船或铁路车辆。混合可以在浓缩步骤之前或之后或步骤（例如蒸发至“商品级”或过磷酸）下进行。例如，通过二水合物或石膏法生产的湿法磷酸可以与通过半水合法生产的磷酸混合。

37. 发明授权

US4409194A Method of separating magnesium from wet process superphosphoric acid 失效
标题翻译：从湿法过磷酸中分离镁的方法
公开(公告)号：US4409194A
公开(公告)日：1983-10-11
申请号：US113981
申请日：1980-01-21
申请人： Alfred W. Petersen
发明人： Alfred W. Petersen
IPC分类号： C01B25/238 , C01B25/24 , C01B25/16
CPC分类号： C01B25/24
摘要： A method of separating magnesium from wet process superphosphoric acid by filtration characterized by no or minimizing agitation during the crystallization of the magnesium in order to form readily filterable agglomerates of MgH.sub.2 P.sub.2 O.sub.7.
摘要翻译：通过过滤分离镁与湿法过磷酸的方法，其特征在于在镁结晶过程中没有或最小化搅拌，以便形成易于过滤的MgH 2 P 2 O 7的附聚物。

38. 发明授权

US3780161A Process for concentrating solutions 失效
标题翻译：浓缩溶液的方法
公开(公告)号：US3780161A
公开(公告)日：1973-12-18
申请号：US3780161D
申请日：1971-02-02
申请人： AZOTE & PROD CHIM
发明人： BERQUIN Y , DUVAL P , ALLETON J
IPC分类号： B01D1/16 , C01B25/234 , C01B25/24 , C01B25/28 , C01B25/40 , C05B19/00 , C01B15/16 , C01B25/16 , C01B25/26
CPC分类号： C01B25/405 , B01D1/16 , C01B25/2346 , C01B25/24 , C01B25/28 , C05B19/00 , C05C1/02
摘要： TO CONCENTRATE SOLUTIONS SUCH AS PHOSPHORIC ACID, DROPLETS THEREOF ARE ENTRAINED IN A HIGH VELOCITY ASCENDING CURRENT OF HOT GAS SUCH AS FLUE GAS, AIR, ETC., OPTIONALLY CONTAINING A REACTANT GAS SUCH AS AMMONIA. THE ENTRAINED DROPLETS ARE PASSED TO A DECELERATING ZONE WHERE THE VELOCITY PROFILE OF THE GAS IS SUCH THAT CONTINUOUS CIRCULATION OF DROPLETS IS POSSIBLE, WITH DROPLETS PROXIMATE THE AXIS OF SAID ZONE BEING ENTRAINED UPWARDLY AND DROPLETS PROXIMATE THE SIDE OF SAID ZONE FALLING DOWNWARDLY WHERE THEY CAN BE RE-ENTRAINED BY ENTERING HOT GAS. IN THIS MANNER IT IS POSSIBLE TO RECIRCULATE THE DROPLETS AND CONTROL THE EXTENT OF CONCENTRATION WITHIN A REASONABLY DIMENSIONED APPARATUS AND WITHOUT ANY DIFFICULT SEPARATION PROBLEM BECAUSE OF EXCESSIVELY SMALL DROPS.

39. 发明授权

US3777008A Solid polyphosphoric acid 失效
标题翻译：固体多磷酸
公开(公告)号：US3777008A
公开(公告)日：1973-12-04
申请号：US3777008D
申请日：1969-11-03
申请人： COMINCO LTD
发明人： MC IVER P
IPC分类号： C01B25/24 , C01B25/16 , C01B15/16
CPC分类号： C01B25/24
摘要： A PROCESS FOR PRODUCING A SOLID COMPLETELY WATER-SOLUBLE POLYPHOSPHORIC ACID. WET PROCESS PHOSPHORIC ACID CONTAINING A CATIONIC MATERIAL - A TERM DEFINED IN THE DISCLOSURE - IS PASSED THROUGH AN ELECTROTHERMAL CELL AT AN ELEVATED TEMPERATURE. THE CONCENTRATED ACID IS WITHDRAWN FROM THE CELL AND COOLED TO YIELD THE DESIRED PRODUCT. THE POLYPHOSPHORIC ACID PRODUCED BY THE PROCESS IS DESCRIBED. AN ELECTROTHERMAL CELL IN WHICH THE PROCESS MAY BE CARRIED OUT IS DESCRIBED.

40. 发明授权

US3652204A Production of chromium-containing phosphoric acid or phosphate solution 失效
标题翻译：生产含铬酸或磷酸盐溶液
公开(公告)号：US3652204A
公开(公告)日：1972-03-28
申请号：US3652204D
申请日：1969-09-30
申请人： TAKI FERTILIZER MFG CO LTD
发明人： AKAZAWA HAKUICHI , WASHIO SHIGEAKI
IPC分类号： C01B25/18 , C01B25/24 , C01B25/37 , C01B25/26
CPC分类号： C01B25/37 , C01B25/18 , C01B25/24
摘要： Process for economically producing chromium-containing phosphoric acid solution by reacting phosphoric acid produced by the wet process, containing hydrofluosilicic acid, with a chromate and removing the precipitated silicofluoride.
摘要翻译：通过使含有氢氟硅酸的湿法生产的磷酸与铬酸盐反应并除去沉淀的氟化硅来经济地生产含铬磷酸溶液的方法。

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