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11. 发明授权

US5183651A Process for the preparation of crystalline sodium silicates 失效
标题翻译：制备晶体硅酸钠的方法
公开(公告)号：US5183651A
公开(公告)日：1993-02-02
申请号：US635933
申请日：1990-12-28
申请人： Gunther Schimmel , Michael Kotzian , Reinhard Gradl
发明人： Gunther Schimmel , Michael Kotzian , Reinhard Gradl
IPC分类号： C01B33/32 , C01B33/38
CPC分类号： C01B33/38
摘要： To prepare crystalline sodium silicates having a layer structure and the formula Na.sub.2 Si.sub.x O.sub.2x+1, in which x is between 2 and 3, sand and soda are first fused in a molar ratio of SiO.sub.2 /Na.sub.2 O of 2 to 3.5 at temperature of 1200.degree. to 1400.degree. C. The water-glass obtained in pieces after the melt has cooled is ground to particle sizes of less than 2 mm before it is treated at temperatures of 600.degree. to 800.degree. C. for 10 to 120 minutes in an elongated reaction zone with mechanical circulation. Finally, the material leaving the reaction zone is ground to a particle fineness of less than 1 mm.
摘要翻译：为了制备具有层结构的结晶硅酸钠和其中x在2和3之间的式Na2SixO2x + 1，首先在1200至1400的温度下以SiO 2 / Na 2 O的摩尔比2至3.5熔融砂和苏打将熔融物冷却后的片状水玻璃研磨至小于2mm的粒度，然后在600℃至800℃的温度下在延长的反应区域中处理10至120分钟，机械循环。最后，将离开反应区的材料研磨成小于1mm的颗粒细度。

12. 发明授权

US4806324A Process for making phosphoric acid free from titanium 失效
标题翻译：制备不含钛的磷酸的方法
公开(公告)号：US4806324A
公开(公告)日：1989-02-21
申请号：US152751
申请日：1988-02-05
申请人： Gunther Schimmel , Reinhard Gradl , Klaus Schrodter
发明人： Gunther Schimmel , Reinhard Gradl , Klaus Schrodter
IPC分类号： C01B25/234 , C01B25/46 , C01B25/16
CPC分类号： C01B25/462 , C01B25/461
摘要： Phosphoric acid substantially free from titanium is made from the organic extract obtained by subjecting crude phosphoric acid containing titanium to extractive purification with an organic solvent immiscible or only partially miscible with water. To this end, the organic extract is scrubbed in a scrubbing zone with a stage number of n>4 by introducing the crude extract into stage 1 and scrubbing it countercurrently with an aqueous alkaline solution in one of stages 2 to n-2 and with pure scrubbing water in stage n.
摘要翻译：基本上不含钛的磷酸由有机提取物制得，所述有机提取物通过用不溶混或仅与水部分混溶的有机溶剂对含有钛的粗磷酸进行萃取纯化而获得。为此，通过将粗提取物引入阶段1并将其与阶段2至n-2之一中的碱性水溶液逆流洗涤，并且纯化到具有阶段数n> 4的洗涤区中，有机萃取物被洗涤在阶段n洗涤水。

13. 发明授权

US4466948A Process for removing heavy metal ions and arsenic from wet-processed phosphoric acid 失效
标题翻译：从湿法处理的磷酸中去除重金属离子和砷的工艺
公开(公告)号：US4466948A
公开(公告)日：1984-08-21
申请号：US508272
申请日：1983-06-24
申请人： Gunther Schimmel , Reinhard Gradl , Gero Heymer
发明人： Gunther Schimmel , Reinhard Gradl , Gero Heymer
IPC分类号： C01B25/237 , C01B25/238 , C01G1/00 , C01G3/00 , C01G11/00 , C01G13/00 , C01G21/00 , C01G28/00 , C22B3/38 , C01B25/16 , B01D11/00 , B03C1/00 , C01G17/00
CPC分类号： C01G3/003 , C01B25/238 , C01G11/003 , C01G13/003 , C01G21/003 , C01G28/001 , C22B3/007 , C22B3/24 , Y02P10/234
摘要： The disclosure relates to a process for removing heavy metal ions and arsenic from wet-processed phosphoric acid, wherein the crude wet-processed phosphoric acid is treated at temperatures between 10.degree. and 100.degree. C. initially with a diorganyldithiosphosphoric acid ester and then with an adsorbent, and the phoshoric acid so purified is separated from the ester and adsorbent. More particularly, the wet-processed phosphoric acid is treated with the diorganyldithiophosphoric acid ester at temperatures higher than 50.degree. C. and with the adsorbent at temperatures lower than 50.degree. C.
摘要翻译：本公开涉及从湿法处理的磷酸中除去重金属离子和砷的方法，其中粗制湿法处理的磷酸最初用二有机基二硫代磷酸酯在10℃至100℃的温度下处理，然后用吸附剂，如此纯化的磷酸与酯和吸附剂分离。更具体地说，湿法处理的磷酸在二氧化二硫代磷酸酯的温度高于50℃下处理，吸附剂在低于50℃的温度下处理。

14. 发明授权

US5211930A Process for the preparation of crystalline sodium silicates having a sheet structure 失效
标题翻译：制备具有片状结构的结晶硅酸钠的方法
公开(公告)号：US5211930A
公开(公告)日：1993-05-18
申请号：US693782
申请日：1991-04-26
申请人： Gunther Schimmel , Reinhard Gradl , Martin Schott
发明人： Gunther Schimmel , Reinhard Gradl , Martin Schott
IPC分类号： C01B33/38
CPC分类号： C01B33/38
摘要： For the preparation of crystalline sodium silicates having a sheet structure and an SiO.sub.2 /Na.sub.2 O molar ratio of 1.9:1 to 3.5:1 from waterglass solutions having a solids content of 20 to 65% by weight, the waterglass solutions are first treated in a spray-drying zone. This gives a pulverulent amorphous sodium silicate having a maximum ignition loss of 20% by weight, while the waste gas leaving the spray-drying zone is at a temperature of at least 140.degree. C. Thereafter, the spray-dried sodium silicate is heated in an ignition zone containing an agitated solid bed at temperatures of 500.degree. to 800.degree. C. for 1 to 60 minutes in the presence of at least 10% by weight of recycled material. This recycled material was obtained by mechanical comminution of crystalline sodium silicate discharged from the ignition zone.
摘要翻译：对于具有固体含量为20至65重量％的水玻璃溶液，具有片状结构和SiO 2 / Na 2 O摩尔比为1.9:1至3.5:1的结晶硅酸钠的制备，先将水玻璃溶液以喷雾干燥区这产生了具有20重量％的最大灼烧损失的粉状无定形硅酸钠，而离开喷雾干燥区的废气处于至少140℃的温度。此后，将喷雾干燥的硅酸钠加热在至少10重量％的再循环材料的存在下，在500℃至800℃的温度下含有搅拌的固体床1分钟至60分钟的点火区域。该回收材料通过从点火区域排出的结晶硅酸钠的机械粉碎获得。

15. 发明授权

US5124137A Process for the preparation of alkali metal phosphate solutions 失效
标题翻译：制备碱金属磷酸盐溶液的方法
公开(公告)号：US5124137A
公开(公告)日：1992-06-23
申请号：US676862
申请日：1991-03-28
申请人： Gunther Schimmel , Thomas Staffel , Reinhard Gradl
发明人： Gunther Schimmel , Thomas Staffel , Reinhard Gradl
IPC分类号： C01B25/30
CPC分类号： C01B25/308
摘要： Alkali metal phosphate solutions having a fluorine content of less than 20 ppm, based on P.sub.2 O.sub.5, are prepared by first digesting crude phosphate using sulfuric acid, and separating the calcium sulfate from the crude phosphoric acid. An alkali metal compound is then added to the crude phosphoric acid, and the precipitated solid is filtered off. The prepurified crude phosphoric acid is neutralized to a pH of at least 7, and the solid produced during this operation is separated off. The resultant alkali metal phosphate solutions having a P.sub.2 O.sub.5 content of from 10 to 30% by weight are adjusted to a pH of between 4.8 and 6.0 using phosphoric acid. The solutions are heated to from 60.degree. to 120.degree. C., and from 1 to 6% by weight, based on the weight of the solution, of an alkaline earth metal oxygen compound are added to the alkali metal phosphate solutions with stirring. Finally, the precipitated solid is filtered off from the alkali metal phosphate solutions after a residence time of from 0.5 to 4 hours.
摘要翻译：通过首先使用硫酸消化粗磷酸酯，并从粗磷酸中分离硫酸钙，制备基于P 2 O 5的氟含量小于20ppm的碱金属磷酸盐溶液。然后向粗磷酸中加入碱金属化合物，滤出沉淀的固体。将预纯化的粗磷酸中和至至少7的pH，并且在该操作期间产生的固体被分离出来。使用磷酸将所得的具有10-30重量％的P2O5含量的碱金属磷酸盐溶液调节至4.8至6.0的pH。在搅拌下将溶液加热至60〜120℃，以溶液重量为1〜6重量％的碱土金属氧化合物加入到碱金属磷酸盐溶液中。最后，在0.5-4小时的停留时间后，将沉淀的固体从碱金属磷酸盐溶液中滤出。

16. 发明授权

US4705529A Process for reducing the reactivity and improving the flow behavior of phosphorus pentoxide 失效
标题翻译：减少五氧化二磷的反应活性和改善流动行为的方法
公开(公告)号：US4705529A
公开(公告)日：1987-11-10
申请号：US818719
申请日：1986-01-14
申请人： Gunther Schimmel , Werner Kowalski , Gero Heymer , Reinhard Gradl
发明人： Gunther Schimmel , Werner Kowalski , Gero Heymer , Reinhard Gradl
IPC分类号： C01B25/12
CPC分类号： C01B25/12
摘要： The reactivity of phosphorus pentoxide is reduced and its flow behavior improved. To this end, phosphorus pentoxide in the form of its hexagonal modification is annealed over a period of 0.5 to 8 hours at temperatures of 200.degree. to 390.degree. C.
摘要翻译：五氧化二磷的反应性降低，流动性提高。为此，以六角形改性形式的五氧化二磷在200〜390℃的温度下退火0.5〜8小时。

17. 发明授权

US4640824A Process for making alkali metal phosphate solutions containing little fluorine 失效
标题翻译：制造含少量氟的碱金属磷酸盐溶液的方法
公开(公告)号：US4640824A
公开(公告)日：1987-02-03
申请号：US682053
申请日：1984-12-14
申请人： Gunther Schimmel , Reinhard Gradl
发明人： Gunther Schimmel , Reinhard Gradl
IPC分类号： C01B25/237 , C01B25/30 , C01B25/46 , C01B25/16
CPC分类号： C01B25/46 , C01B25/308
摘要： The disclosure relates to a process for making alkali metal phosphate solutions containing little fluorine from pre-purified alkali metal phosphate solutions obtained from crude phosphoric acid by extracting the acid with an organic solvent being immiscible or only partially miscible with water, scrubbing the crude extract with water or an alkali metal solution, re-extracting the phosphoric acid from the scrubbed extract with the use of an aqueous alkali metal solution while establishing an alkali metal/P-molar ratio equal to or larger than 1:1, and separating the resulting organic phase from the pre-purified alkali metal phosphate solution obtained.To this end, the disclosure provides:(a) for the pre-purified alkali metal phosphate solution to be stirred at 60.degree.-120.degree. C. into a compound of an alkaline earth metal Me.sup.2+ with a solubility in water at 20.degree. C. of more than 0.01 mol Me.sup.2+ /1, alkaline earth metal compounds with a solubility in water of less than 5 g/l being used in the form of particles of which more than 50% have a size of less than 8 .mu.m, for the whole to be reacted over a period of 0.5 to 4 hours, and for the resulting precipitate to be separated from the alkali metal phosphate solution so purified, and(b) for the alkaline earth metal compound necessary for effecting the defluorination to be suspended or dissolved in the alkali metal phosphate solution needed for effecting the re-extraction, and for the reaction between the alkali metal phosphate solution and alkaline earth metal compound to be effected in the mixing zone of the re-extraction unit.
摘要翻译：本公开涉及通过用与水不混溶或仅与水部分混溶的有机溶剂萃取酸来从粗磷酸获得的预纯化碱金属磷酸盐溶液中制备含少量氟的碱金属磷酸盐溶液的方法，用水或碱金属溶液，使用碱金属水溶液从洗涤的提取物中再次提取磷酸，同时确定等于或大于1:1的碱金属/ P摩尔比，并分离所得的有机物从预纯化的碱金属磷酸盐溶液获得。为此，本公开内容提供：（a）将预纯化的在60-120℃下搅拌的碱金属磷酸盐溶液转变成在20℃在水中溶解度的碱土金属Me2 +的化合物。大于0.01mol Me2 + / 1，在水中的溶解度小于5g / l的碱土金属化合物以超过50％的尺寸小于8μm的颗粒的形式使用，对于整个反应0.5至4小时，并将所得沉淀物从纯化的碱金属磷酸盐溶液中分离出来，（b）对于实现脱氟所必需的碱土金属化合物悬浮或溶解在进行再提取所需的碱金属磷酸盐溶液中，以及在再提取单元的混合区域中进行的碱金属磷酸盐溶液和碱土金属化合物之间的反应。

18. 发明授权

US4444729A Multistage column for countercurrent extraction of liquids 失效
标题翻译：用于逆流提取液体的多级柱
公开(公告)号：US4444729A
公开(公告)日：1984-04-24
申请号：US393695
申请日：1982-06-30
申请人： Reinhard Gradl , Gunther Schimmel
发明人： Reinhard Gradl , Gunther Schimmel
IPC分类号： B01D11/04 , A01D17/00
CPC分类号： B01D11/043
摘要： The disclosure relates to a multistage column for countercurrent extraction of two liquids of different specific density therein. The column is comprised of a housing in upright position provided at its upper end with an upper inlet and upper outlet and, at its lower end, with a lower inlet and lower outlet, the upper inlet and lower outlet permitting specifically denser liquid to be introduced into the column and to be taken therefrom, and the lower inlet and upper outlet permitting specifically less dense liquid to be introduced into the column and to be taken therefrom. Arranged centrally within the housing so as to extend vertically downward therein is a shaft and a plurality of stirring means which are spaced apart from each other are secured to the shaft, perpendicularly with respect thereto. A plurality of annular stator collars are mounted within the region of the inside wall of the housing, the individual stator collars being arranged downstream of, and spaced apart from, each other. Each stirring means has at least one disk with a diameter sufficient to cover the inner free area of the respective stator collar, secured thereto, at at least one place thereof. The stirring means and/or the stator collars are vertically movable against each other at a separation L. Encircling packings permitting the disks and stator collars to be sealed are provided at at least on position between disks and stator collars.
摘要翻译：本公开涉及一种用于逆流提取两种不同比重密度的液体的多级柱。该柱由直立位置的壳体组成，其上端具有上部入口和上部出口，并且在其下端具有下部入口和下部出口，上部入口和下部出口允许引入更密集的液体进入该塔并从其中取出，并且下部入口和上部出口允许将较不致密的液体引入该塔并从其中取出。在壳体中央布置成在其中垂直向下延伸的是轴和彼此间隔开的多个搅拌装置，其相对于其垂直地固定到轴上。多个环形定子环安装在壳体的内壁的区域内，各个定子套环布置在彼此的下游并且彼此间隔开。每个搅拌装置具有至少一个盘，其直径足以覆盖固定在其上的相应定子环的内部自由区域，其至少一个位置处。搅拌装置和/或定子套环在分离L处可彼此上下移动。允许盘和定子套环密封的环形填料至少在盘和定子套环之间的位置处提供。

19. 发明授权

US4713229A Process for purifying phosphoric acid 失效
标题翻译：磷酸纯化方法
公开(公告)号：US4713229A
公开(公告)日：1987-12-15
申请号：US774084
申请日：1985-09-09
申请人： Gunther Schimmel , Reinhard Gradl
发明人： Gunther Schimmel , Reinhard Gradl
IPC分类号： C01B25/234 , C01B25/237 , C01B25/238 , C01B25/46 , C01G3/00 , C01G11/00 , C01G13/00 , C01G21/00 , C01G28/00 , C01B25/14 , C01B25/16
CPC分类号： C01G13/003 , C01B25/237 , C01G11/003 , C01G21/003 , C01G28/001 , C01G3/003 , C22B3/24 , Y02P10/234
摘要： Wet process phosphoric acid is freed from heavy metal ions, especially from ions of cadmium, copper, mercury, lead and arsenic and optionally also from organic compounds and sulfuric acid. To this end, the phosphoric acid is contacted with a diorganyldithiophosphoric acid ester and an adsorbent, if desired. Prior to or after said treatment with the ester, the phosphoric acid is admixed with a reductant. The adsorbent, if any is used alone or in combination with an alkaline earth metal compound soluble in phosphoric acid.
摘要翻译：湿法磷酸从重金属离子中脱除，特别是从镉，铜，汞，铅和砷的离子中释放出来，任选地也可以是有机化合物和硫酸。为此，如果需要，磷酸与二有机二硫代磷酸酯和吸附剂接触。在用酯处理之前或之后，将磷酸与还原剂混合。吸附剂（如果有的话）单独使用或与可溶于磷酸的碱土金属化合物组合使用。

20. 发明授权

US4540558A Process for removing organic contaminants from wet-processed phosphoric acid 失效
标题翻译：从湿法处理的磷酸中除去有机污染物的方法
公开(公告)号：US4540558A
公开(公告)日：1985-09-10
申请号：US627456
申请日：1984-07-03
申请人： Reinhard Gradl , Hans-Werner Stephan , Gero Heymer , Gunther Schimmel
发明人： Reinhard Gradl , Hans-Werner Stephan , Gero Heymer , Gunther Schimmel
IPC分类号： C01B25/235 , C01B25/237
CPC分类号： C01B25/235
摘要： The disclosure relates to a process for removing organic compounds from wet-processed phosphoric acid with the aid of an adsorbant. To this end the disclosure provides for the acid to be heated to at least 250.degree. C. prior to treating it with the adsorbant. The disclosure also relates to an apparatus for carrying out the process.
摘要翻译：本公开涉及借助吸附剂从湿法处理的磷酸中除去有机化合物的方法。为此，本公开提供了在用吸附剂处理之前将其加热至至少250℃的酸。本公开还涉及一种用于执行该过程的装置。

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