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1. 发明授权

US4762693A Process for working up heavy metal-containing residues originally from the decontamination of crude phosphoric acid 失效
标题翻译：原始来自粗磷酸去污的重金属残留物的处理方法
公开(公告)号：US4762693A
公开(公告)日：1988-08-09
申请号：US039792
申请日：1987-04-16
申请人： Gunther Schimmel , Reinhard Gradl , Friedrich Kolkmann
发明人： Gunther Schimmel , Reinhard Gradl , Friedrich Kolkmann
IPC分类号： B01D11/04 , C01B25/238 , C01B25/46 , C01G1/02 , C22B3/38
CPC分类号： C01B25/238 , C22B3/007 , C22B3/24 , Y02P10/234
摘要： Residue obtained upon the removal of heavy metal contaminants from crude phosphoric acid by means of a dialkyldithiophosphoric acid ester and adsorbent is worked up into ecologically reliable solid matter and into a heavy metal concentrate. The solid matter and heavy metal concentrate are separated from one another by successive mechanical and chemical treatment. The sequential order of these two operational steps can be inversed.
摘要翻译：通过二烷基二硫代磷酸酯和吸附剂从粗磷酸中除去重金属污染物后获得的残留物被加工成生态可靠的固体物质并重金属浓缩物。通过连续的机械和化学处理将固体物质和重金属浓缩物彼此分离。这两个操作步骤的顺序可以颠倒。

2. 发明授权

US4780294A Process for making crude phosphoric acid 失效
标题翻译：制备粗磷酸的方法
公开(公告)号：US4780294A
公开(公告)日：1988-10-25
申请号：US10333
申请日：1987-02-03
申请人： Gunther Schimmel , Friedrich Kolkmann , Reinhard Gradl , Herbert Ressel
发明人： Gunther Schimmel , Friedrich Kolkmann , Reinhard Gradl , Herbert Ressel
IPC分类号： C01B25/222 , C01B25/22 , C01B25/223 , C01B25/16 , C01B17/16
CPC分类号： C01B25/2208 , C01B25/223
摘要： Crude phosphoric acid is made by subjecting crude phosphate ore containing sulfide to processing treatment with a mineral acid in a closed system comprised of a processing reactor, a filtering zone and an off-gas scrubbing zone. To this end, a soluble compound of a metal forming difficultly soluble sulfides in the respective acid medium is added either(A) during the processing operation the phosphate ore is subjected to or(B) during the scrubbing operation the off-gas is subjected toand the resulting sulfide precipitate is filtered off in case (A) together with further matter precipitated during the processing operation and, in case (B) separated from the scrubbing liquid.
摘要翻译：粗磷酸是通过在含有加工反应器，过滤区和废气洗涤区的封闭系统中，使含有硫化物的粗磷酸盐矿石与无机酸进行处理而制成的。为此，在各种酸性介质中形成难以溶解的硫化物的金属的可溶性化合物在（a）在磷酸盐矿石经历的处理操作期间或（B）中加入废气进行处理并且在（A）的情况下将所得的硫化物沉淀与在处理操作期间沉淀的另外的物质一起被滤出，并且在与洗涤液分离的情况下（B）。

3. 发明授权

US4683127A Process for making wet-process phosphoric acid 失效
标题翻译：制造湿法磷酸的方法
公开(公告)号：US4683127A
公开(公告)日：1987-07-28
申请号：US826289
申请日：1986-02-05
申请人： Friedrich Kolkmann , Herbert Ressel , Reinhard Gradl , Gunther Schimmel
发明人： Friedrich Kolkmann , Herbert Ressel , Reinhard Gradl , Gunther Schimmel
IPC分类号： C01B25/22 , C01B25/225 , C01B25/226 , C01B25/16
CPC分类号： C01B25/2208 , C01B25/225 , C01B25/226
摘要： Wet-process phosphoric acid is made by subjecting a phosphate ore to processing treatment with a mineral acid resulting in the formation of a processed suspension. The formation of silicofluorides is obviated by adding, either to the phosphate ore or the processed suspension, a quantity of an aluminum compound soluble in phosphoric acid sufficent for the processed suspension to present an aluminum concentration of 0.3 to 1.0 wgt %, based on P.sub.2 O.sub.5.
摘要翻译：湿法磷酸是通过使磷酸盐矿石与无机酸进行处理而形成加工后的悬浮液而制得的。通过向磷酸盐矿石或经处理的悬浮液中加入一定量的可溶于磷酸的铝化合物足以使经处理的悬浮液以基于P 2 O 5的浓度为0.3至1.0重量％的浓度来添加氟化硅的形成。

4. 发明授权

US4906445A Continuous process for complete removal or organic impurities from and complete decolorization of prepurified wet-process phosphoric acid 失效
标题翻译：用于完全去除或有机杂质的连续方法和完全脱湿的湿法磷酸完全脱色
公开(公告)号：US4906445A
公开(公告)日：1990-03-06
申请号：US311640
申请日：1989-02-16
申请人： Gunther Schimmel , Gerhard Bettermann , Gero Heymer , Friedrich Kolkmann
发明人： Gunther Schimmel , Gerhard Bettermann , Gero Heymer , Friedrich Kolkmann
IPC分类号： C01B25/234 , C01B25/235 , C01B25/46
CPC分类号： C01B25/461 , C01B25/235
摘要： A continuous process is indicated for complete removal of organic impurities from and complete decolorization of pre-purified wet-process phosphoric acid which has been purified by an extractive method using an organic solvent, freed from residual hydrofluoric acid by steam stripping and treated with hydrogen peroxide at elevated temperature, which comprises mixing the pre-purified wet-process phosphoric acid and the hydrogen peroxide in a mixing zone at a temperature of from 100.degree. to 200.degree. C., preferably 140.degree. to 160.degree. C., and allowing them to react at this temperature for a further 1 to 4 hours, cooling to from 85.degree. to 90.degree. C. the pre-purified wet-process phosphoric acid treated in this way and pumping it at this temperature with exclusion of air firstly through an activated charcoal bed which has been prepared on the basis of peat and has been steam-activated and has a BET surface area of from 800 to 1000 m.sup.2 /g, and subsequently through a silicon carbide and/or graphite bed while maintaining a pumping rate of less than 0.5 m.sup.3 /h of wet-process phosphoric acid per m.sup.3 of activated charcoal bed.
摘要翻译：指示完全除去有机杂质并完全脱色预纯化的湿法磷酸的连续方法，其通过萃取方法使用有机溶剂纯化，通过汽提除去残留的氢氟酸并用过氧化氢处理在高温下，其包括在预先纯化的湿法磷酸和过氧化氢的混合区中在100至200℃，优选140至160℃的温度下混合，并使它们在该温度下再反应1至4小时，冷却至85℃至90℃，预纯化的湿法磷酸以此方式处理并在该温度下泵送，首先通过活性炭排除空气基于泥炭制备并已蒸汽活化并具有800至1000m2 / g的BET表面积的床，随后通过碳化硅和/或石墨b 同时保持每立方米活性炭床的湿法磷酸的泵送速率小于0.5m 3 / h。

5. 发明授权

US4904459A Process for working up dusts which are produced in the electrothermal production of phosphorus 失效
标题翻译：处理在电热生产中产生的粉尘的工艺
公开(公告)号：US4904459A
公开(公告)日：1990-02-27
申请号：US385492
申请日：1989-07-26
申请人： Friedrich Kolkmann , Gunther Schimmel , Johannes Scheffer
发明人： Friedrich Kolkmann , Gunther Schimmel , Johannes Scheffer
IPC分类号： C01B25/027 , C01B25/30 , C01B25/41
CPC分类号： C01B25/416 , C01B25/027 , C01B25/30
摘要： A process is provided for working up dusts which have been precipitated electrostatically from the gas mixture composed essentially of carbon monoxide and phosphorus vapor produced in the electrothermal production of yellow phosphorus, which process comprises converting the dusts into a calcinate at 300.degree. to 800.degree. C. under oxidizing conditions in a first step, leaching the calcinate with phosphoric acid in a second step, adjusting the pH of the solution in phosphoric acid to 0 to 1.5 with sodium hydroxide solution in a third step, precipitating the sulfides of lead, copper and cadmium from the partially neutralized solution in phosphoric acid by adding sulfide and filtering them off in a fourth step, adjusting the pH of the filtered, partially neutralized solution in phosphoric acid to about 1.5 to 5.0 with sodium hydroxide solution and precipitating zinc sulfide, if necessary by adding further quantities of sulfide, and filtering it off in a fifth step, further neutralizing the sodium phosphate solution, if necessary after expelling excess sulfide, with sodium hydroxide solution and separating it from precipitated calcium compounds in a sixth step, and using the resultant sodium phosphate solution in this form in a known manner to produce sodium phosphate salts.
摘要翻译：提供了一种处理从黄磷的电热生产中产生的基本上由一氧化碳和磷蒸气组成的气体混合物静电析出的灰尘的方法，该方法包括在300-800℃下将粉尘转化成煅烧物在第一步骤的氧化条件下，在第二步中用磷酸浸出煅烧物，在第三步中用氢氧化钠溶液将磷酸溶液的pH调节至0至1.5，使铅，铜和通过添加硫化物并在第四步骤中将其从磷酸中的部分中和的溶液中的镉，在氢氧化钠溶液中将过滤的，部分中和的磷酸溶液的pH调节至约1.5至5.0，如果需要，沉淀硫化锌通过添加更多量的硫化物，并在第五步骤中过滤，进一步中和磷酸二氢钠溶液，如果需要，用氢氧化钠溶液排出过量的硫化物，并在第六步骤中将其与沉淀的钙化合物分离，并以已知的方式使用所得的这种形式的磷酸钠溶液来生产磷酸钠盐。

6. 发明授权

US4629614A Process for decontaminating phosphoric acid 失效
标题翻译：磷酸去污方法
公开(公告)号：US4629614A
公开(公告)日：1986-12-16
申请号：US794507
申请日：1985-11-04
申请人： Gunther Schimmel , Reinhard Gradl
发明人： Gunther Schimmel , Reinhard Gradl
IPC分类号： C01B25/234 , C01B25/237 , C01B25/46 , C01B25/16
CPC分类号： C01B25/237 , C01B25/461 , C01B25/462
摘要： Wet-process phosphoric acid prepurified by liquid/liquid extraction with an organic solvent is decontaminated. To this end, the prepurified acid is first freed from residual extractant, then stripped with steam or hot gas, contacted with a dialkyldithiophosphoric acid ester and a fine particulate adsorbent, and liquid phase material is ultimately treated with steam and hydrogen peroxide.
摘要翻译：通过液体/液体萃取用有机溶剂预处理的湿法磷酸被去污染。为此，首先将预纯化的酸从残留的萃取剂中除去，然后用蒸汽或热气汽提，与二烷基二硫代磷酸酯和细颗粒吸附剂接触，最后用蒸汽和过氧化氢处理液相物质。

7. 发明授权

US4620966A Process for defluorinating alkali metal phosphate solutions 失效
标题翻译：氟化碱金属磷酸盐溶液的方法
公开(公告)号：US4620966A
公开(公告)日：1986-11-04
申请号：US619057
申请日：1984-06-11
申请人： Gunther Schimmel , Herbert Ressel , Gero Heymer , Reinhard Gradl
发明人： Gunther Schimmel , Herbert Ressel , Gero Heymer , Reinhard Gradl
IPC分类号： C01B25/30 , C01B25/16
CPC分类号： C01B25/308
摘要： The disclosure relates to a process for defluorinating alkali metal phosphate solutions. To this end, the disclosure provides for an alkali metal phosphate solution neutralized to a pH-value of more than 6 and pre-purified to be stirred at 60.degree. to 120.degree. C. into an alkaline earth metal compound. Alkaline earth metal compounds with a solubility in water of less than 5 g/l are used in the form of particles of which more than 50% have a size of less than 8 .mu.m. After a reaction period of 0.5 to 4 hours, the precipitate obtained is separated from the purified alkali metal phosphate solution.
摘要翻译：本公开涉及一种氟化碱金属磷酸盐溶液的方法。为此，本公开内容提供将中和至pH值大于6并经60℃至120℃预纯化以进入碱土金属化合物的碱金属磷酸盐溶液。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。反应时间为0.5〜4小时后，从纯化的碱金属磷酸盐溶液中分离得到的沉淀物。

8. 发明授权

US4539192A Process for removing fluorine and organic compounds from prepurified wet processed phosphoric acid 失效
标题翻译：从预纯化湿法磷酸中除去氟和有机化合物的方法
公开(公告)号：US4539192A
公开(公告)日：1985-09-03
申请号：US625456
申请日：1984-06-28
申请人： Gunther Schimmel , Reinhard Gradl , Gero Heymer
发明人： Gunther Schimmel , Reinhard Gradl , Gero Heymer
IPC分类号： C01B25/234 , C01B25/237 , C01B25/46 , C01B25/16
CPC分类号： C01B25/461 , C01B25/237
摘要： The disclosure provides for phosphoric acid to be freed in a single process stage from fluorine and organic contaminants. To this end, the disclosure provides for the acid to be introduced into the upper portion of a closed structural element, for it to be treated therein at elevated temperature and pressure with steam flowing countercurrently to the acid, and for the acid so treated to be reacted in the lower portion of the structural element with hydrogen peroxide. The disclosure also provides an apparatus for carrying out the process.
摘要翻译：本公开提供在单一工艺阶段中从氟和有机污染物中释放的磷酸。为此，本公开提供了将酸引入封闭结构元件的上部，以使其在升高的温度和压力下被处理，其中蒸汽与酸反向流动，并且对于被酸处理的酸在结构元件的下部与过氧化氢反应。本公开还提供了一种用于执行该过程的装置。

9. 发明授权

US4460549A Recovery of uranium from wet-process phosphoric acid 失效
标题翻译：从湿法磷酸中回收铀
公开(公告)号：US4460549A
公开(公告)日：1984-07-17
申请号：US229978
申请日：1981-01-30
申请人： Gunther Schimmel , Reinhard Gradl , Gero Heymer
发明人： Gunther Schimmel , Reinhard Gradl , Gero Heymer
IPC分类号： B01D11/04 , C01G43/00 , C22B60/02
CPC分类号： C22B60/026 , Y02P10/212
摘要： The present invention relates to a process for recovering uranium from raffinate which is obtained by extracting phosphoric acid from a uranium-containing wet-process phosphoric acid with the aid of organic extractants and separating the resulting organic phosphoric acid extract from residue not taken up by the extract. To this end, the raffinate residue is subjected to thermal treatment and thereby freed from dissolved or emulsified residual extractant. Next, the raffinate is treated with a water-immiscible solvent to extract the uranium, and the extracted uranium is separated from the undissolved raffinate portion.
摘要翻译：本发明涉及从萃余液中回收铀的方法，该方法是通过有机萃取剂从含铀的湿法磷酸中提取磷酸而得到的，并将所得的有机磷酸提取物从不被提取。为此，对残液进行热处理，从而除去溶解或乳化残渣的萃取剂。接下来，用不与水混溶的溶剂处理萃余液以提取铀，并将萃取的铀与未溶解的萃余液部分分离。

10. 发明授权

US4452768A Process for removing heavy metal ions from wet-processed phosphoric acid 失效
标题翻译：从湿法磷酸中去除重金属离子的方法
公开(公告)号：US4452768A
公开(公告)日：1984-06-05
申请号：US455252
申请日：1983-01-03
申请人： Reinhard Gradl , Gunther Schimmel , Werner Krause , Gero Heymer
发明人： Reinhard Gradl , Gunther Schimmel , Werner Krause , Gero Heymer
IPC分类号： C01B25/238 , B01D11/04 , C01B25/237 , C01B25/46 , C01G1/00 , C01B25/16 , B01D11/00 , B03C1/00 , C01G17/00
CPC分类号： C01B25/237 , C22B3/24 , Y02P10/234
摘要： The disclosure relates to process for removing heavy metal ions, especially cadmium, copper, lead and mercury ions from wet-processed phosphoric acid. To this end, the crude acid is contacted with a mixture consisting of an adsorbent and a diorganyldithiophosphoric acid ester or, after treatment with the ester, the acid is contacted with the adsorbent alone, and the purified phosphoric acid is ultimately separated from the ester and adsorbent.
摘要翻译：本公开涉及从湿法处理的磷酸中去除重金属离子，特别是镉，铜，铅和汞离子的方法。为此，将粗酸与由吸附剂和二有机基二硫代磷酸酯组成的混合物接触，或者在用酯处理后，酸与吸附剂单独接触，纯化的磷酸最终与酯分离，吸附剂。

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