专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明授权

US4661331A Continuous process for preparing sodium orthophosphate slurries from natural soda ash and orthophosphoric acid 失效
标题翻译：从天然苏打灰和正磷酸制备正磷酸钠浆液的连续工艺
公开(公告)号：US4661331A
公开(公告)日：1987-04-28
申请号：US653182
申请日：1984-09-24
申请人： N. Earl Stahlheber , John E. Lyon
发明人： N. Earl Stahlheber , John E. Lyon
IPC分类号： C01B25/30 , C01B25/41
CPC分类号： C01B25/308 , C01B25/301 , C01B25/412
摘要： Unmilled commercially available granular "natural" soda ash is reacted with orthophosphoric acid to produce a highly concentrated slurry at a molar Na:P ratio of about 1.5 in a continuous process. Problems associated with incomplete reaction are solved and the slurry can be dried to the double salt Na.sub.3 H.sub.3 (PO.sub.4).sub.2 or reacted with aqueous sodium hydroxide to produce a superior precursor for manufacturing sodium tripolyphosphate.
摘要翻译：将未经研磨的市售颗粒状“天然”苏打灰与正磷酸反应，以连续方法产生Na / P比为约1.5的高浓度浆料。解决与不完全反应相关的问题，将浆液干燥成双盐Na 3 H 3（PO 4）2，或与氢氧化钠水溶液反应，生成制备三聚磷酸钠的优良前体。

92. 发明授权

US3956464A Preparation of phosphates 失效
标题翻译：磷酸盐的制备
公开(公告)号：US3956464A
公开(公告)日：1976-05-11
申请号：US135297
申请日：1971-04-19
申请人： Erhart K. Drechsel , John B. Sardisco , James R. Stewart, Jr.
发明人： Erhart K. Drechsel , John B. Sardisco , James R. Stewart, Jr.
IPC分类号： C01B25/30 , C01B25/46 , C05B7/00
CPC分类号： C01B25/46 , C01B25/301 , C05B7/00
摘要： Potassium phosphates useful as fertilizer materials, are produced by the reaction of phosphate rock or a solubilized form thereof, concentrated sulfuric acid and potassium hydrogen sulfate wherein the potassium hydrogen sulfate is added in a controlled manner and preferably in admixture with at least a portion of the sulfuric acid, the precipitated calcium sulfate precipitate is removed and the filtrate processed for recovery of the potassium phosphates. In further embodiments, high-sulfate containing filtrates are treated to lower the sulfate ion content of the products and effect partial neutralization by any of several methods such as by treatment thereof with fresh phosphate rock or source of calcium ion such as calcium oxide, alternatively or successively, and the resulting solution is used as a fertilizer, or liquids are removed and the solids are dried and/or dehydrated for recovery of the potassium phosphate compounds. Also methods are provided for the addition of nitrogen values.
摘要翻译：可用作肥料材料的磷酸钾通过磷酸盐岩或其溶解形式，浓硫酸和硫酸氢钾的反应产生，其中硫酸氢钾以受控的方式加入，优选与至少一部分硫酸，除去沉淀的硫酸钙沉淀物，处理滤液以回收磷酸钾。在另外的实施方案中，处理含高硫酸盐的滤液以降低产物的硫酸根离子含量并通过几种方法中的任何一种方法进行部分中和，例如通过用新鲜的磷酸盐岩或钙离子源如氧化钙处理，或者或将所得溶液用作肥料，或者除去液体，并将固体干燥和/或脱水以回收磷酸钾化合物。还提供了用于添加氮值的方法。

93. 发明授权

US3607021A Process for controlling density of trisodium phosphate 失效
标题翻译：控制磷酸三钙密度的方法
公开(公告)号：US3607021A
公开(公告)日：1971-09-21
申请号：US3607021D
申请日：1968-11-22
申请人： FMC CORP
发明人： JACOBS JOEL B , TABOROSI STEVE
IPC分类号： C01B25/30
CPC分类号： C01B25/301
摘要： The density of trisodium phosphate in anhydrous form and trisodium phosphate monohydrate is controlled by alkalizing a solution of phosphoric acid, monosodium phosphate, or disodium phosphate, and crystallizing it in the presence of carbon dioxide to alter the crystallization pattern of the salt from the liquor in the dryer, thereby to develop a product of improved uniform high density, subject to close regulation, related to the carbon dioxide in the liquor and flow of carbon dioxide to the liquor as the evaporation and crystallization are carried out.

94. 发明授权

US3269926A Process for the electrolytic production of alkali metal phosphates 失效
标题翻译：碱金属磷酸盐电解生产工艺
公开(公告)号：US3269926A
公开(公告)日：1966-08-30
申请号：US23100862
申请日：1962-10-16
申请人： KNAPSACK AG
发明人： JOSEPH CREMER , HARRI KRIBBE
IPC分类号： C01B25/30 , C25B1/14
CPC分类号： C01B25/301 , C25B1/14

95. 发明授权

US2390400A Production of sodium phosphates 失效
标题翻译：生产磷酸钠
公开(公告)号：US2390400A
公开(公告)日：1945-12-04
申请号：US44852942
申请日：1942-06-26
申请人： MONSANTO CHEMICALS
发明人： TAYLOR GEORGE E
IPC分类号： C01B25/30
CPC分类号： C01B25/301

96. 发明授权

US2021699A Manufacture of phosphates 失效
标题翻译：磷酸盐的制造
公开(公告)号：US2021699A
公开(公告)日：1935-11-19
申请号：US57127531
申请日：1931-10-26
申请人： GEN CHEMICAL CORP
发明人： LOUIS PREISMAN
IPC分类号： C01B25/30
CPC分类号： C01B25/301

97. 发明授权

US1805873A Method of producing potassium phosphate 失效
标题翻译：磷酸钾生产方法
公开(公告)号：US1805873A
公开(公告)日：1931-05-19
申请号：US37172229
申请日：1929-06-17
申请人： OSCAR KASELITZ
发明人： OSCAR KASELITZ
IPC分类号： C01B25/30
CPC分类号： C01B25/301

98. 发明授权

US1686835A Process for producing potassium salts and by-products 失效
标题翻译：生产钾盐和副产物的方法
公开(公告)号：US1686835A
公开(公告)日：1928-10-09
申请号：US19422627
申请日：1927-05-25
申请人： PIKE
发明人： PIKE ROBERT D , ROSS CUMMINGS
IPC分类号： C01B25/30
CPC分类号： C01B25/301

99. 发明授权

US1447544A Theodobe j 失效
公开(公告)号：US1447544A
公开(公告)日：1923-03-06
申请号：US1447544D
IPC分类号： C01B25/30
CPC分类号： C01B25/301

100. 发明申请

US20180170763A1 METHOD FOR PREPARING SOLID LITHIUM SALT FROM LITHIUM SOLUTION 审中-公开
公开(公告)号：US20180170763A1
公开(公告)日：2018-06-21
申请号：US15692246
申请日：2017-08-31
申请人： SUNGEEL HITECH CO., LTD.
发明人： Suk-Hyun BYUN , Kang-Myung YI , Ki-Woong LEE , Kwang-Joong KIM , Woo-Young JUNG
IPC分类号： C01D15/08 , H01M10/42 , C01D15/06 , C01B25/30 , C22B26/12
CPC分类号： C01D15/08 , C01B25/301 , C01D15/06 , C01P2002/72 , C01P2006/80 , C22B26/12 , H01M10/4242 , H01M10/54
摘要： An embodiment of the present invention provides a method for preparing a solid lithium salt from a lithium solution including the steps of, preparing a mixture in which a phosphorus-containing material is added to a lithium solution in step 1; adding a basic solution to the prepared mixture to adjust the pH in step 2; making the pH-adjusted mixture react by raising its temperature and filtering to recover lithium phosphate in step 3; preparing an acid lithium solution in which distilled water and acid are added to the recovered lithium phosphate, in step 4; and recovering a solid lithium salt by evaporative concentration of the acid lithium solution, in step 5.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式