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71. 发明申请

WO2016067085A1 A METHOD FOR TREATING A WASTE CONTAINING SULFURIC ACID 审中-公开
标题翻译：一种处理含有硫酸的废物的方法
公开(公告)号：WO2016067085A1
公开(公告)日：2016-05-06
申请号：PCT/IB2015/001996
申请日：2015-10-27
申请人： DELL'OMODARME, Mario Alberto , GARCIA, Fernando Horacio
发明人： DELL'OMODARME, Mario Alberto , GARCIA, Maria Fernanda , GARCIA, Maria de Los Angeles
IPC分类号： C01G19/00 , C01G19/02 , C01D1/02 , C01D5/02 , C01F5/12 , C01F5/40 , C01B17/50 , C01G9/02 , C01G9/06 , C01G49/14
CPC分类号： C01D1/02 , C01B17/58 , C01D5/02 , C01F5/12 , C01F5/40 , C01G9/02 , C01G9/06 , C01G19/00 , C01G19/02 , C01G49/14
摘要： A method for treating a waste material (20) containing sulfuric acid and metal ions, as In the case of the waste material the production of the T1O2, provides mixing to the waste material (20) an alkaline reagent (10), selected among a hydroxide of an alkaline metal such as Mg, Zn, Sn, adapted to selectively precipitate (300) the cations as hydroxides, thus obtaining a first mixture (21) having a higher pH that contains a solution (22) of a sulfate and/or oxysulfate of the metal and solid hydroxides (23) of the metal cations that are separated from the first mixture (21) and can be used in metal sulfates production process. The method also comprises mixing the solution (22) with a precipitation agent (31), thus forming a second mixture (32) in which the sulfate and/or oxysulfate precipitates and is removed (301), heated, reduced and decomposed (400) by means of a reducing agent (41) selected among elemental sulfur, hydrogen and a reducing flame, thus obtaining SO 2 (42) available for making H 2 SO 4 , and a solid oxide (43) of the metal of the alkaline reagent that is recycled (101) as alkaline reagent (10) in the step (200) of mixing with the waste material (20). Advantageously, a step (350) is provided of recovering precipitation agent (31) from the water of second mixture (32), after removing (301) the sulfate and/or oxysulfate, and a step (351) is also provided of recycling the regenerated precipitation agent (31), In particular, an alcohol as ethyl alcohol, used as the precipitation agent (31), can be easily regenerated by distillation, exploiting low temperature-heat, which is largely available from a possible sulfuric acid production plant close to the plant that producing the sulfuric waste material (20). The method according to the invention makes it possible to eliminate the sludge resulting from the sulfuric waste material treatment, while recovering valuable compounds.
摘要翻译：一种用于处理含有硫酸和金属离子的废料（20）的方法，如在废物的情况下，生成T1O2，向废料（20）提供碱性试剂（10），该碱性试剂（10）选自适于选择性沉淀（300）阳离子为氢氧化物的碱金属如Mg，Zn，Sn的氢氧化物，从而获得具有较高pH值的第一混合物（21），其含有硫酸盐溶液（22）和/或与第一混合物（21）分离的金属阳离子的金属和固体氢氧化物（23）的硫代硫酸盐，可用于金属硫酸盐生产过程。该方法还包括将溶液（22）与沉淀剂（31）混合，从而形成第二混合物（32），其中硫酸盐和/或氧代硫酸盐沉淀并除去（301），加热，还原和分解（400）通过从元素硫，氢和还原火焰中选择的还原剂（41），从而获得可用于制备H 2 SO 4的SO 2（42）和再循环的碱性试剂的金属的固体氧化物（43）（101 ）作为与废料（20）混合的步骤（200）中的碱性试剂（10）。有利地，提供步骤（350），在除去（301）硫酸盐和/或硫酸氢盐之后，从第二混合物（32）的水中回收沉淀剂（31），并且还提供步骤（351）再生沉淀剂（31）特别是用作沉淀剂（31）的醇作为乙醇，可以通过蒸馏容易地再生，开发低温热，这在很大程度上可以从可能的硫酸生产装置中获得到生产硫酸废料（20）的工厂。根据本发明的方法可以在回收有价值的化合物的同时，消除由硫酸废料处理产生的污泥。

72. 发明申请

WO2014176655A1 PROCESSO PARA PRODUÇÃO DE SOLUÇÃO DE SULFATO DE ZINCO, OBTIDO DE PÓ DE ACIARIA, E INSUMO FERTILIZANTE CORRESPONDENTE 审中-公开
标题翻译：使用从钢铁渣获得的锌和生产含锌锌溶液的方法和相关的肥料输入
公开(公告)号：WO2014176655A1
公开(公告)日：2014-11-06
申请号：PCT/BR2014/000138
申请日：2014-04-30
申请人： DE ARAÚJO PONTE, Haroldo , TEDESCHI GOMES ABRANTES, Ana Carolina
发明人： DE ARAÚJO PONTE, Haroldo , TEDESCHI GOMES ABRANTES, Ana Carolina
IPC分类号： C01G9/06 , C21B3/04 , C22B7/02 , C05D9/00
CPC分类号： C05D9/02 , C01G9/06 , C05G3/0064 , C21B3/04 , C22B7/007 , C22B7/02 , Y02P10/234 , Y02W30/542
摘要： Processo para produção de solução de sulfato de zinco obtido de pó d.e aciaria e insumo fertilizante correspondente Refere-se a presente patente de invenção a um processo de recuperação de zinco proveniente de resíduos de pó de aciaria com a obtenção de solução de sulfato de zinco com concentração acima de 12 %.para aplicação como fertilizante. O processo consiste no tratamento do pó de aciaria com solução de ácido sulfúrico a uma temperatura de 65°C, mantendo-se o pH abaixo do, ponto de precipitação do sulfato de zinco. A mistura é filtrada, sendo o filtrado uma solução de sulfato de zincó com concentração maior do que 12% que é encaminhada a um tanque de armazenamento de produto final. O resíduo sólido úmido pobre em zinco é encaminhado a um segundo reator contendo água, após uma agitação de 8 a 12 minutos filtra-se a mistura, e o filtrado é adicionado ao produto final desde que não ocorra diluição abaixo, dos 12% de Zn ou utilizado na preparação de nova solução de ácido sulfúrico.
摘要翻译：生产硫酸锌溶液的方法，使用从炼钢厂的灰尘获得的锌，以及各自的肥料投入。本发明涉及一种从炼钢厂垃圾中回收锌的方法，生产浓度高于12％的硫酸锌溶液，可用作肥料。该方法包括在65℃的温度下用硫酸溶液处理钢铁厂的粉尘，将溶液的pH值保持在硫酸锌饱和点以下。将混合物过滤，滤液为浓度高于12％的硫酸锌溶液，将其送至最终产品储罐。将含有低锌的湿固体废物进入到含有水的第二反应器中，搅拌8〜12分钟后，将混合物过滤，并将滤液加入到最终产物中，只要Zn浓度不变稀释至12％以下，或用于制备新鲜的硫酸溶液。

73. 发明申请

WO2011061408A1 METHOD FOR THE REMOVAL OF CHLORIDE FROM ZINC SULPHATE SOLUTION 审中-公开
标题翻译：从硫酸锌溶液中去除氯化物的方法
公开(公告)号：WO2011061408A1
公开(公告)日：2011-05-26
申请号：PCT/FI2010/050946
申请日：2010-11-22
申请人： OUTOTEC OYJ , RUONALA, Mikko , SVENS, Kurt , ARPALAHTI, Antti , LEPISTÖ, Karoliina
发明人： RUONALA, Mikko , SVENS, Kurt , ARPALAHTI, Antti , LEPISTÖ, Karoliina
IPC分类号： C22B3/46 , C22B19/20 , C01G9/06
CPC分类号： C22B19/22 , C01G9/06 , C22B3/46 , C22B19/26 , Y02P10/234
摘要： The invention relates to a method for removing chloride from zinc sulphate solution in conjunction with zinc production. According to the method, the chloride is removed from solution by means of monovalent copper, which is produced in a separate copper(l) oxide formation stage, in which the pH is regulated to the region of 4.5 - 5.
摘要翻译：本发明涉及一种结合锌生产从硫酸锌溶液中除去氯化物的方法。根据该方法，通过在分开的氧化铜（1）氧化物形成阶段中产生的单价铜从溶液中除去氯化物，其中pH调节到4.5-5的范围。

74. 发明申请

WO02020856A1 MANUFACTURING METHOD FOR ZINC SULFATE, MANGANESE SULFATE AND FERROUS SULFATE 审中-公开
标题翻译：硫酸锌，硫酸锰和硫酸锌的制造方法
公开(公告)号：WO02020856A1
公开(公告)日：2002-03-14
申请号：PCT/KR2001/001223
申请日：2001-07-18
IPC分类号： C01G9/06 , C01G45/10 , C01G49/14 , C22B7/00 , C22B15/00
CPC分类号： C22B15/0089 , C01G9/06 , C01G45/10 , C01G49/14 , C22B7/006 , Y02P10/234 , Y02P10/236
摘要： The present invention relates to a process for producing cupric carbonate from waste liquid of PCB corrosion. Waste liquid of PCB corrosion containing cupric chloride is being produced in a great quantity due to the industrial development.It is economical advantages that waste liquid of PCB corrosion is recycled to products such as cupric sulfate which is produced by an addition of sulfuric acid and cupric oxide which is produced by an addition of sodium hydroxide because waste liquid of PCB corrosion contains usually copper of 10 to 12 % and HCl of 10 to 15 %. Accordingly, the present invention provides a process for producing cupric carbonate from waste liquid of PCB corrosion which comprises adding cupric oxide to waste liquid of PCB corrosion containing cupric chloride to remove free HCl, adding a neutralizing agent such as sodium carbonate and sodium bicarbonate thereto to neutralize to a pH of 8-9, circulating forcedly the obtained liquid by pumps, and injecting carbonic acid gas under a pressure of 7 kg/cm .
摘要翻译：本发明涉及一种从PCB腐蚀废液生产碳酸铜的方法。由于工业发展，含有氯化铜的PCB腐蚀废液由于工业发展而大量生产。经济的优点是将PCB腐蚀废液回收到硫酸铜产品中，硫酸铜加入硫酸和铜通过加入氢氧化钠生产的氧化物，因为PCB腐蚀的废液通常含有10至12％的铜和10至15％的HCl。因此，本发明提供一种从PCB腐蚀废液中生产碳酸铜的方法，该方法包括向含有氯化铜的PCB腐蚀废液中加入氧化铜以除去游离HCl，向其中加入中和剂如碳酸钠和碳酸氢钠，中和到8-9的pH，通过泵强制循环获得的液体，并在7kg / cm 2的压力下注入碳酸气体。

75. 发明申请

WO2019128862A1 线路板焚烧烟灰预处理及溴的回收方法审中-公开
公开(公告)号：WO2019128862A1
公开(公告)日：2019-07-04
申请号：PCT/CN2018/122612
申请日：2018-12-21
申请人：北京工业大学
发明人：吴玉锋 , 潘德安 , 左铁镛 , 李彬
IPC分类号： C22B7/02 , C22B3/12
CPC分类号： C01F11/46 , C01G3/003 , C01G3/10 , C01G9/06 , C01G21/20 , C22B3/0017 , C22B3/08 , C22B3/12 , C22B3/44 , C22B7/007 , C22B7/008 , C22B7/02 , C22B7/04 , C22B13/045 , C22B15/0065 , C22B15/0071 , C22B19/30 , Y02P10/232 , Y02P10/234 , Y02P10/236 , Y02P10/242
摘要：线路板焚烧烟灰预处理及溴的回收方法，属于烟灰全湿法有价金属综合回收领域，特别涉及线路板焚烧烟灰预处理过程有价金属的回收、贵金属富集和溴盐回收的方法。主要包括混碱浸出、铜萃取反萃回收铜、中和沉淀分离铅锌、溴蒸发结晶、混碱浸出液再生、酸洗除锌、锌蒸发结晶、混碱浸出渣脱锌铜等步骤。与传统烟灰综合回收工艺相比，该技术对烟灰预处理过程中最大程度对铜、锌、铅等有价金属的回收和银等贵金属的富集，同时对溴盐进行分离回收，具有回收附加值高、无尾液排放等特点。

76. 发明申请

WO2014096548A1 METHOD AND ARRANGEMENT FOR REMOVING FLUORIDE FROM SULFATE SOLUTIONS 审中-公开
标题翻译：从硫酸盐溶液中除去氟化物的方法和装置
公开(公告)号：WO2014096548A1
公开(公告)日：2014-06-26
申请号：PCT/FI2013/051189
申请日：2013-12-20
申请人： OUTOTEC OYJ
发明人： PAATERO, Erkki , VALKAMA, Kari
IPC分类号： C25C1/16 , C25B15/08 , B01D15/00 , B01J20/12 , C01B7/20 , C01G9/06 , C02F1/28 , C02F1/58 , C02F101/14
CPC分类号： B01J20/12 , B01D15/02 , C01B7/197 , C01B7/20 , C01G9/06 , C02F1/281 , C02F2101/14 , C02F2103/16 , C25C1/16
摘要： The invention relates to a method and an arrangement for removing fluoride and fluorine components from zinc containing process liquors and slurries. The method comprises the steps of i) withdrawing a flow of zinc sulfate containing process liquor or slurry from a zinc recovery process (12); ii) contacting the flow of zinc sulfate containing process liquor or slurry with a clay sorbent (3, 6) capable of sorbing fluoride or fluorine containing components present in the zinc sulfate containing process liquor or slurry to obtain a mixture of a clay sorbent comprising immobilized fluoride and a zinc sulfate containing process liquor or slurry at least partly depleted of fluoride; ii) separating the clay sorbent comprising immobilized fluoride from the mixture to obtain a treated zinc solution (10); and iv) returning the zinc solution back to the zinc recovery process (12).
摘要翻译：本发明涉及从含锌工艺液体和浆料中除去氟和氟成分的方法和装置。该方法包括以下步骤：i）从锌回收方法（12）中取出含有硫酸锌的处理液或浆料的流动; ii）使含硫酸锌的处理液或浆料流与能够吸附含硫酸锌处理液或浆料中存在的氟化物或含氟成分的粘土吸附剂（3,6）接触，以获得包含固定化的粘土吸附剂的混合物氟化物和含硫酸锌的处理液或至少部分耗尽氟化物的浆料; ii）从混合物中分离包含固定的氟化物的粘土吸附剂以获得处理的锌溶液（10）; 和iv）将锌溶液返回到锌回收方法（12）。

77. 发明申请

WO2014084746A1 METHOD OF OBTAINING ZINC SULPHATE SOLUTION FOR ELECTROWINNING OF ZINC FROM SELECTED WAELZ OXIDE OF HYDROMETALLURGICAL PROPERTIES 审中-公开
标题翻译：获得锌离子溶液的方法，用于从选择性氧化锆的水蒸汽特性中电镀锌
公开(公告)号：WO2014084746A1
公开(公告)日：2014-06-05
申请号：PCT/PL2013/000003
申请日：2013-01-08
申请人： ZAKŁADY GÓRNICZO-HUTNICZE "BOLESŁAW"S.A.
发明人： FATYGA, Mirosław , OCHAB, Bogusław , STENCEL, Leszek , TREPKA, Andrzej , PIECZONKA, Bogdan , ZIĘBA, Łukasz , NOWAK, Jerzy , CZEKAJ, Jerzy , JAKUBOWSKI, Jacek , WYCIŚLIK, Stanisław , SZARY, Andrzej
IPC分类号： C01G9/06
CPC分类号： C01G9/06 , C22B19/26 , C22B19/30 , C25C1/16 , Y02P10/234
摘要： The object of the invention is a method of obtaining zinc sulphate solution for electrolysis of zinc from selected Waelz oxide of hydrometaliurgical properties, applicable in the hydrometaliurgical process of electrolytic zinc manufacture. In the process according to the invention selected oxides of hydrometallurrgical properties from the Waelz plant are used, and the process of preparing zinc electrolyte for electrolytic zinc manufacture is carried out in three stages, wherein each of the stages is preceded by a different process of preparing process suspension. In the first stage the crude zinc oxide is treated with cold water to remove chlorine and alkali elements in a two-step counter-current operation of leaching soluble components carried out in a washing and thickening unit, wherefrom water containing alkali elements and chlorine is selectively transferred to CaCI 2 manufacture. In the second stage the crude zinc oxide processed in the first stage is further treated in an autoclave at a temperature of 120-130°C to remove fluorine by treatment with Na 2 CO 3 and/or Na 2 CO 3 solution, after which the suspension, preferably upon thickening, is subjected to phase separation by means of filtration and washing the filter cake on the filter. In the third stage the filter cake obtained in the second stage is dissolved in the recycled acid, after which the thickened suspension is separated in a thickening and phase separation process by means of filtration and washing the filter cake on the filter, and the solution after sedimentation constitutes a zinc electrolyte for electrolytic zinc manufacture.
摘要翻译：本发明的目的是获得适用于电解锌制造的水热处理工艺中的从选择的氧化镁冶金性能的电解锌的硫酸锌溶液的方法。在根据本发明的方法中，使用来自Waelz工厂的选择的氧化物的湿法冶金特性，并且制备用于电解锌制造的锌电解质的方法分三个阶段进行，其中每个阶段之前都有不同的制备方法过程暂停。在第一阶段，用冷水处理粗氧化锌，以便在洗涤和增稠装置中进行的浸出可溶性组分的两步逆流操作中以除去氯和碱元素，从而选择性地含有碱元素和氯的水转移到CaCI2制造。在第二阶段中，在高压釜中在120-130℃的温度下进一步处理在第一阶段中加工的粗氧化锌，以通过用Na 2 CO 3和/或Na 2 CO 3溶液处理除去氟，之后悬浮液优选在增稠后，通过过滤进行相分离，并将滤饼洗涤在过滤器上。在第三阶段中，将第二阶段得到的滤饼溶解在再循环的酸中，然后通过过滤分离增稠的悬浮液，并在过滤器上洗涤滤饼，然后将滤液洗涤后的溶液沉淀构成用于电解锌制造的锌电解质。

78. 发明申请

WO2006043158A1 LEACHING PROCESS IN THE PRESENCE OF HYDROCHLORIC ACID FOR THE RECOVERY OF A VALUE METAL FROM AN ORE 审中-公开
标题翻译：氢氯酸盐存在下从矿石中恢复价值金属的浸出过程
公开(公告)号：WO2006043158A1
公开(公告)日：2006-04-27
申请号：PCT/IB2005/003136
申请日：2005-10-21
申请人： ANGLO OPERATIONS LIMITED , SMIT, Jan, Tjeerd , STEYL, Johann Du Toit
发明人： SMIT, Jan, Tjeerd , STEYL, Johann Du Toit
IPC分类号： C22B3/10 , C22B23/04 , C22B19/22 , C22B19/26
CPC分类号： C22B19/22 , C01F5/40 , C01G9/06 , C01G21/20 , C01G49/06 , C22B3/10 , C22B3/44 , C22B19/26 , C22B23/0423 , Y02P10/234
摘要： A process is described for leaching a value metal from an ore containing said value metal, the process including the steps of leaching the ore in the presence of hydrochloric acid so as to form a soluble metal-chloride salt in a leach solution; adding sulphuric acid to the leach solution; recovering a metal-sulphate salt from the leach solution; and regenerating hydrochloric acid. The ore may be an oxidic base metal ore, such as a zinc oxide ore; a lateritic nickel ore, such as a saprolitic or limonitic ore; a sulphide ore or a titanium ore. The value metal is typically selected from the group consisting of Zn, Cu, Ti, Al, Cr, Ni, Co, Mn, Fe, Pb, Na, K, Ca, platinum group metals and gold. The metal in the metal-sulphate salt may be the value metal, or may be a metal of less value than the value metal, such as magnesium. The regenerated hydrochloric acid is recycled within the leach process.
摘要翻译：描述了一种用于从含有所述金属金属的矿石中浸出值金属的方法，该方法包括在盐酸存在下浸提矿石以在浸出溶液中形成可溶性金属氯化物盐的步骤; 向浸出溶液中加入硫酸; 从浸出溶液中回收金属硫酸盐; 并再生盐酸。矿石可以是氧化贱金属矿，例如氧化锌矿石; 红土镍矿，如腐泥或褐铁矿; 硫化矿石或钛矿石。金属金属通常选自Zn，Cu，Ti，Al，Cr，Ni，Co，Mn，Fe，Pb，Na，K，Ca，铂族金属和金。金属硫酸盐中的金属可以是金属值，或者可以是比金属值低的金属，例如镁。再生的盐酸在浸出过程中循环使用。

79. 发明申请

WO99022037A1 METHOD FOR EXTRACTING NON-FERROUS METALS SUCH AS ZINC BY ELECTROLYSIS AND BY ADDING SUBSTANCES CONTAINING PHOSPHOR 审中-公开
标题翻译：一种获得有色金属如锌电解加磷物质
公开(公告)号：WO99022037A1
公开(公告)日：1999-05-06
申请号：PCT/EP1998/004807
申请日：1998-07-31
IPC分类号： C01G9/06 , C22B19/20 , C25B15/08 , C25C1/16
CPC分类号： C25C1/16 , C01G9/06 , C22B19/26 , C25B15/08 , Y02P10/234
摘要： The invention relates to a method for extracting non-ferrous metals, especially zinc, from raw materials containing metal by means of electrolysis using a technique which is known in itself. According to the inventive method, substances containing phosphor are also added. This both facilitates the precipitation of toxic electrolysis substances and improves the current efficiency during the electrolysis.
摘要翻译：本发明涉及一种用于非铁金属，特别是锌，从含金属的原料通过电解在用促进电解毒物和电流效率的沉淀通过加入含磷物质的电解提高额外地设置以常规方式回收的方法。

80. 发明公开

EP3212577A1 A METHOD FOR TREATING A WASTE CONTAINING SULFURIC ACID 审中-公开
标题翻译：一种处理含硫酸废物的方法
公开(公告)号：EP3212577A1
公开(公告)日：2017-09-06
申请号：EP15825628.9
申请日：2015-10-27
申请人： DELL'Omodarme, Mario Alberto , Garcia, Fernando Horacio
发明人： GARCIA, Maria Fernanda , GARCIA, Maria de Los Angeles
IPC分类号： C01G19/00 , C01G19/02 , C01D1/02 , C01D5/02 , C01F5/12 , C01F5/40 , C01B17/50 , C01G9/02 , C01G9/06 , C01G49/14
CPC分类号： C01D1/02 , C01B17/58 , C01D5/02 , C01F5/12 , C01F5/40 , C01G9/02 , C01G9/06 , C01G19/00 , C01G19/02 , C01G49/14
摘要： A method for treating a waste material (20) containing sulfuric acid and metal ions, as In the case of the waste material the production of the T1O2, provides mixing to the waste material (20) an alkaline reagent (10), selected among a hydroxide of an alkaline metal such as Mg, Zn, Sn, adapted to selectively precipitate (300) the cations as hydroxides, thus obtaining a first mixture (21) having a higher pH that contains a solution (22) of a sulfate and/or oxysulfate of the metal and solid hydroxides (23) of the metal cations that are separated from the first mixture (21) and can be used in metal sulfates production process. The method also comprises mixing the solution (22) with a precipitation agent (31), thus forming a second mixture (32) in which the sulfate and/or oxysulfate precipitates and is removed (301), heated, reduced and decomposed (400) by means of a reducing agent (41) selected among elemental sulfur, hydrogen and a reducing flame, thus obtaining SO
2 (42) available for making H
2 SO
4 , and a solid oxide (43) of the metal of the alkaline reagent that is recycled (101) as alkaline reagent (10) in the step (200) of mixing with the waste material (20). Advantageously, a step (350) is provided of recovering precipitation agent (31) from the water of second mixture (32), after removing (301) the sulfate and/or oxysulfate, and a step (351) is also provided of recycling the regenerated precipitation agent (31), In particular, an alcohol as ethyl alcohol, used as the precipitation agent (31), can be easily regenerated by distillation, exploiting low temperature-heat, which is largely available from a possible sulfuric acid production plant close to the plant that producing the sulfuric waste material (20). The method according to the invention makes it possible to eliminate the sludge resulting from the sulfuric waste material treatment, while recovering valuable compounds.
摘要翻译：一种用于处理含有硫酸和金属离子的废料（20）的方法，如在生产TiO 2的废料的情况下，向废料（20）提供碱性试剂（10）的混合，碱性试剂（10）选自（Mg），锌（Zn），锡（Sn）等碱金属的氢氧化物，适于选择性地沉淀（300）阳离子作为氢氧化物，从而获得具有较高pH的第一混合物（21），其含有硫酸盐溶液（22）和/或金属阳离子的金属硫酸盐和固体氢氧化物（23），其与第一混合物（21）分离并且可用于金属硫酸盐生产过程。该方法还包括将溶液（22）与沉淀剂（31）混合，由此形成第二混合物（32），其中硫酸盐和/或硫酸盐沉淀并被去除（301），加热，还原和分解（400）借助于选自元素硫，氢和还原火焰的还原剂（41），从而获得可用于制备H 2 SO 4的SO 2（42）以及被再循环的碱性试剂的金属的固体氧化物（43）（101 ）作为与废物（20）混合的步骤（200）中的碱性试剂（10）。有利地，提供在去除（301）硫酸盐和/或硫酸盐之后从第二混合物（32）的水中回收沉淀剂（31）的步骤（350），并且还提供步骤（351）再生沉淀剂（31），特别地，作为沉淀剂（31）使用的作为乙醇的醇可以容易地通过蒸馏再生，利用低温度热量，其可以从可能的硫酸生产厂关闭到生产硫酸废料（20）的工厂。根据本发明的方法可以消除由硫酸废料处理产生的污泥，同时回收有价值的化合物。

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