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公开(公告)号：US20180162731A1
公开(公告)日：2018-06-14
申请号：US15894863
申请日：2018-02-12
摘要： A method for manufacturing high purity sulfuric acid is provided. A mixed solution subsequently undergoes a first preheating step, a second preheating step, a distilling step and an evaporating step to remove peroxide, water, oxygen and insoluble impurities, so as to obtain the first gas containing sulfur trioxide, sulfuric acid and hydrogen oxide. And then, the sulfur trioxide is absorbed by a sulfuric acid solution, thereby forming the high purity sulfuric acid.
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2.发明申请公开(公告)号：US20140339468A1
公开(公告)日：2014-11-20
申请号：US14364372
申请日：2012-10-26
申请人： EISENMANN AG
发明人： Angela Ante , Marc-Peter Hofmann
CPC分类号： B01D53/1425 , C01B17/901 , C01B17/907 , C01G3/12 , C01G28/008 , C02F1/722 , C02F2101/103 , C02F2101/20 , C22B15/0091
摘要： A method for separating arsenic and heavy metals in an acidic washing solution which contains both arsenic and heavy metal, more particularly in a washing solution which is formed in copper smelting and contains sulphuric acid, comprises a separation process section, in which arsenic and at least one primary heavy metal are separated from one another. The separation process section comprises a processing step, in which hydrogen peroxide H2O2 is added to the washing solution, and the separation process section comprises a precipitation stage, in which the washing solution is admixed with a sulphide precipitation reagent, causing the at least one primary heavy metal to precipitate in the form of a metal sulphide. The processing step in this system is carried out before the precipitation stage.
摘要翻译： 一种在含有砷和重金属的酸性洗涤液中分离砷和重金属的方法，特别是在以铜冶炼形成并含有硫酸的洗涤液中，特别包括分离工艺段，其中砷和至少 一个主要的重金属彼此分离。 分离方法部分包括其中将过氧化氢H 2 O 2加入到洗涤溶液中的处理步骤，并且分离工艺部分包括沉淀阶段，其中洗涤溶液与硫化物沉淀试剂混合，使得至少一个初级 重金属以金属硫化物的形式沉淀。 该系统的处理步骤在沉淀阶段前进行。
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公开(公告)号：US20140326593A1
公开(公告)日：2014-11-06
申请号：US14266819
申请日：2014-04-30
摘要： A method for manufacturing high purity sulfuric acid is provided. A mixed solution subsequently undergoes a first preheating step, a second preheating step, a distilling step and an evaporating step to remove peroxide, water, oxygen and insoluble impurities, so as to obtain the first gas containing sulfur trioxide, sulfuric acid and hydrogen oxide. And then, the sulfur trioxide is absorbed by a sulfuric acid solution, thereby forming the high purity sulfuric acid.
摘要翻译： 提供了制造高纯度硫酸的方法。 混合溶液随后进行第一预热步骤，第二预热步骤，蒸馏步骤和蒸发步骤以除去过氧化物，水，氧和不溶性杂质，以获得含有三氧化硫，硫酸和氢氧化物的第一气体。 然后，三氧化硫被硫酸溶液吸收，形成高纯硫酸。
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4.发明申请REDUCING AGENT FOR THE SOLUBLE CHROMATE CONTENT OF CEMENT AND METHODS FOR PRODUCTION THEREOF 有权用于水泥的可溶性铬酸盐含量的还原剂及其生产方法公开(公告)号：US20120137934A1
公开(公告)日：2012-06-07
申请号：US13371783
申请日：2012-02-13
申请人： Michael VÖSSING , Gerhard AUER , Benno LAUBACH , Detlef KLEIN , Werner SCHUY , Klaus KÖLLISCH , Erwin WEISS , Werner BAHL , Philip REESE
发明人： Michael VÖSSING , Gerhard AUER , Benno LAUBACH , Detlef KLEIN , Werner SCHUY , Klaus KÖLLISCH , Erwin WEISS , Werner BAHL , Philip REESE
CPC分类号： C01B17/901 , C01G23/0532 , C01G49/14 , C01P2004/61 , C01P2004/62 , C04B22/149 , C04B28/02 , C04B2111/1081 , C22B7/04 , Y02P10/212 , C04B22/142
摘要： The invention relates to a reducing agent for the soluble chromate content of cement and to methods for the production thereof, which comprise concentrating an used sulfuric acid, containing iron (II) sulfate, and separating the sulfuric acid from the obtained precipitate which contains iron (II) sulfate.
摘要翻译： 本发明涉及一种用于水泥的可溶性铬酸盐含量的还原剂及其制备方法，其包括浓缩含硫酸铁（II）的硫酸，并将硫酸与所得到的含铁沉淀物 II）硫酸盐。
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公开(公告)号：US07473409B2
公开(公告)日：2009-01-06
申请号：US11495428
申请日：2006-08-30
申请人： Danny Mislenkov
发明人： Danny Mislenkov
IPC分类号： C01B17/90 , C01B25/234 , C01G3/10 , C01G49/14 , C07C51/42 , C07C309/01
CPC分类号： C01F5/40 , C01B17/901 , C02F1/001 , C02F1/32 , C02F1/5245 , C02F1/66 , C02F9/00 , C02F2101/20 , C02F2101/30 , Y10S423/02
摘要： A recycling process is presented to treat spent waste acid solutions whereby useful products are produced. Spent waste acid containing inorganic and organic contaminants is mixed with a magnesium compound containing aluminum and iron compounds that form oxyhydroxide flocs that complex, react, sequester and/or co-precipate the contaminates from the admixture. The magnesium reacts with sulfate ions to form a high quality magnesium sulfate solution.
摘要翻译： 提出了一种回收方法来处理废弃的废酸溶液，从而生产有用的产品。 含有无机和有机污染物的废弃物酸与含有铝和铁化合物的镁化合物混合，形成羟基氧化絮凝物，其使混合物中的污染物复合，反应，螯合和/或共沉淀。 镁与硫酸根离子反应形成高品质的硫酸镁溶液。
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公开(公告)号：US20080056982A1
公开(公告)日：2008-03-06
申请号：US11495428
申请日：2006-08-30
申请人： Danny Mislenkov
发明人： Danny Mislenkov
IPC分类号： C01B17/90
CPC分类号： C01F5/40 , C01B17/901 , C02F1/001 , C02F1/32 , C02F1/5245 , C02F1/66 , C02F9/00 , C02F2101/20 , C02F2101/30 , Y10S423/02
摘要： A recycling process is presented to treat spent waste acid solutions whereby useful products are produced. Spent waste acid containing inorganic and organic contaminants is mixed with a magnesium compound containing aluminum and iron compounds that form oxyhydroxide flocs that complex, react, sequester and/or co-precipate the contaminates from the admixture. The magnesium reacts with sulfate ions to form a high quality magnesium sulfate solution.
摘要翻译： 提出了一种回收方法来处理废弃的废酸溶液，从而生产有用的产品。 含有无机和有机污染物的废弃物酸与含有铝和铁化合物的镁化合物混合，形成羟基氧化絮凝物，其使混合物中的污染物复合，反应，螯合和/或共沉淀。 镁与硫酸根离子反应形成高品质的硫酸镁溶液。
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公开(公告)号：US20070122336A1
公开(公告)日：2007-05-31
申请号：US10574454
申请日：2004-10-01
IPC分类号： C01G49/14
CPC分类号： C01B17/901 , C01G23/0532 , C01G49/14 , Y10S423/01 , Y10S423/02
摘要： The invention concerns a method for processing heavy metal-laden spent sulfuric acid. For this, iron-laden spent sulfuric acid or iron-laden sulfuric materials obtained therefrom are reacted with a material that contains iron chloride and optionally other metal chlorides, producing iron (II) sulfate. The spent sulfuric acid preferably derives from titanium dioxide production.
摘要翻译： 本发明涉及一种处理重金属负载硫酸的方法。 为此，将由此获得的含铁的废硫酸或含铁的硫酸材料与含有氯化铁和任选的其它金属氯化物的材料反应，生成硫酸铁（II）。 废硫酸优选来源于二氧化钛生产。
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公开(公告)号：US5324499A
公开(公告)日：1994-06-28
申请号：US116734
申请日：1993-09-07
IPC分类号： B01D53/34 , C01B17/90 , C01B33/107
CPC分类号： C01B17/901 , C01B17/907 , C01B33/10705
摘要： A process for the reduction in fluoride concentration in a fluoride-contaminated sulphuric acid which process comprises treating said sulphuric acid with a silicon compound to produce silicon tetrafluoride, and removing said silicon tetrafluoride to produce a purer sulphuric acid having a substantially reduced fluoride concentration. The process is of particular use for the removal of fluoride from waste sulphuric acid in the copper smelting industry to meet environmental concerns.
摘要翻译： 一种氟化物污染的硫酸中氟化物浓度降低的方法，该方法包括用硅化合物处理所述硫酸以产生四氟化硅，并除去四氟化硅以产生具有显着降低的氟化物浓度的更纯的硫酸。 该工艺特别用于从铜冶炼行业的废硫酸中除去氟化物以满足环境问题。
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9.发明授权
公开(公告)号：US4788044A
公开(公告)日：1988-11-29
申请号：US072484
申请日：1987-07-13
CPC分类号： C22B3/0024 , C01B17/901 , C01G31/00 , C09C1/48 , C22B34/22 , C01P2006/80 , Y02P10/234
摘要： A method is described for recovering vanadium from residues from the combustion of petroleum fractions, wherein the residues, such as ash and soot, are leached with aqueous H.sub.2 SO.sub.4 to extract vanadium and any additional polyvalent cations contained therein. The acid leaching solution, after oxidation of the extracted cations, is treated with a complexing agent, in particular EDTA or salts thereof, and then with ammonia to selectively precipitate vanadium as highly pure ammonium polyvanadate.
摘要翻译： 描述了一种用于从石油馏分的燃烧的残余物中回收钒的方法，其中残余物例如灰分和烟灰用H 2 SO 4水溶液浸提以提取钒及其中所含的任何附加的多价阳离子。 在提取的阳离子氧化之后，酸性浸出溶液用络合剂，特别是EDTA或其盐处理，然后用氨选择性沉淀钒作为高纯度的聚钒酸铵。
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10.发明授权
公开(公告)号：US3753692A
公开(公告)日：1973-08-21
申请号：US3753692D
申请日：1970-08-04
申请人： ICI AUSTRALIA LTD
发明人： BOURCHIER K , FERGUSSON STEWART D
IPC分类号： C22B19/20 , C01B17/74 , C01B17/90 , C01G9/06 , C22B1/06 , C22B3/00 , C22B3/20 , C22B19/00 , C25C1/16 , C01G9/00 , C01B17/72
CPC分类号： C01B17/901 , C22B19/22 , Y02P10/234
摘要： A process for the production of zinc and sulphuric acid comprising leaching solid zinc sulphate with an aqueous liquor to form a leach liquor, electrolysing the latter to obtain zinc and a spent electrolyte comprising sulphuric acid, concentrating the sulphuric acid content in the spent electrolyte to precipitate the bulk of the residual zinc sulphate as a solid, separating the latter and so obtaining a sulphuric acid filtrate, and recycling said precipitated zinc sulphate to the electrolysis step in the next cycle by dissolving it in the aqueous leach liquor fed to the electrolysis step. Preferably the starting material (zinc sulphate) is obtained by a controlled oxidation (sulphating) roast of zinc sulphide ore or zinc containing residues obtained in zinc manufacturing processes.
摘要翻译： 一种用于生产锌和硫酸的方法，包括用固体硫酸锌与含水液体浸出以形成浸出液，电解后者获得锌和含硫酸的废电解质，将硫酸含量浓缩在废电解液中以沉淀 大部分残留的硫酸锌作为固体，分离后者，从而获得硫酸滤液，并将所述沉淀的硫酸锌在下一个循环中通过将其溶解在进料到电解步骤的含水浸出液中来回收所述沉淀的硫酸锌。 优选的原料（硫酸锌）是通过硫化锌矿石的受控氧化（硫化）焙烧或锌制造过程中获得的含锌残渣获得的。
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