| Patents for C01D 5 - Sulfates or sulfites of sodium, potassium, or alkali metals in general (1,848) |
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| 05/09/2012 | CN102442888A Method for producing 1,5-dihydroxy naphthalene |
| 05/02/2012 | CN102432131A Resource recovery equipment for roasting with sodium and leaching acid ammonium salt vanadium settling wastewater |
| 05/02/2012 | CN102432073A Comprehensive treatment method of waste ferrous sulphate |
| 05/02/2012 | CN102432047A Extracting and zero-discharging method of seawater bittern multi-elements |
| 05/02/2012 | CN102432039A Technique for preparing sodium sulfite from tail gas of strontium carbonate production |
| 05/02/2012 | CN102432038A Method and device for removing chlorine and potassium ions in fly ash produced by alkali recovery furnace and recovering sulfate radical |
| 05/02/2012 | CN102432037A Original halogen denitration production process and production equipment |
| 05/02/2012 | CN102001689B Method for recycling side product of sodium hydrogen sulfate generated by production of chlorine dioxide |
| 04/25/2012 | CN102424403A 一种元明粉烟气除钙镁及连续进料方法 One kind of calcium and magnesium and sodium sulphate flue gas in addition to the continuous feeding method |
| 04/18/2012 | CN202193631U 硫酸钠型卤水生产散湿盐的专用设备 Type sodium salt brine production equipment scattered wet |
| 04/18/2012 | CN202193627U 制备高纯盐的盐硝联产装置 Preparation of high purity salt and sodium salt cogeneration unit |
| 04/18/2012 | CN102421707A Process for simultaneous production of potassium sulphate, ammonium sulfate, magnesium hydroxide and/or magnesium oxide from kainite mixed salt and ammonia |
| 04/18/2012 | CN102417193A Production method for increasing nitrate removal capacity by membrane method |
| 04/10/2012 | CA2445052C Building and other materials containing treated bauxite tailings and process for making same |
| 04/04/2012 | CN101844779B 一种粗颗粒无水芒硝的制造工艺 One of coarse particles thenardite manufacturing process |
| 03/28/2012 | CN102390847A Production method for preparing potassium sulfate by potassium chloride-sodium sulfate method |
| 03/28/2012 | CN102390809A Equipment for coproducing pure hydrogen chloride and potassium (sodium) sulfate |
| 03/21/2012 | CN202169148U 一种搅拌器 One kind of blender |
| 03/21/2012 | CN102387993A Removal of impurities in the production of crystalline sodium carbonate, bicarbonate, or sulfite |
| 03/21/2012 | CN102126777B Treatment method of phenol sodium salt waste water |
| 03/14/2012 | CN102372293A Technology of preparing Na2SO4 through salting-out method with NaC1 as salting-out agent, and recovering salting-out agent through water evaporation in salt field |
| 03/14/2012 | CN102372292A Technology for preparing potassium sulfate with potassium-rich mother liquid and phosphogypsum |
| 03/13/2012 | US8133288 Aqueous borohydride compositions |
| 03/08/2012 | WO2011129563A3 Method of preparing anhydrous hydrogen fluoride by using sodium aluminum tetrafluoride and reaction device for the same |
| 03/07/2012 | CN102367178A Method for preparing copper sulfide, copper sulfate pentahydrate and sodium sulfate from waste residue copper sludge |
| 03/07/2012 | CN101792124B Method for producing hydrogen chloride and sodium hydrogen sulfate crystals by taking rock salt as raw material |
| 02/23/2012 | CA2808627A1 Processing of manganous sulphate/dithionate liquors |
| 02/15/2012 | CN102351357A Resource utilization of waste water containing phenol and sodium sulfate and treating method |
| 02/15/2012 | CN102351217A Method of removing lead in by-product sodium sulfate of recovery and processing of waste lead storage batteries |
| 02/15/2012 | CN102351199A Method for coproducing white carbon black and sodium sulfate from waste sulfuric acid and bentonite alkaline extraction waste liquid rich in christobalite |
| 02/08/2012 | CN102344220A Method for treating metronidazole waste water |
| 02/07/2012 | CA2653718C Process to produce sodium sulfate and magnesium hydroxide |
| 02/01/2012 | EP2411330A1 Process for simultaneous production of potassium sulphate, ammonium sulfate, magnesium hydroxide and/or magnesium oxide from kainite mixed salt and ammonia |
| 02/01/2012 | CN102336647A Application of AK sugar crystal mother liquor and method for preparing sylvite by crystal mother liquor |
| 02/01/2012 | CN102336421A Double-salt field method for preparing sodium sulfate based on mother liquid treatment |
| 01/25/2012 | CN102328939A Method for preparing sodium sulfite and barium chloride with cogeneration of powdery barium salt by using salting-out master liquid generated in zinc powder method |
| 01/25/2012 | CN102328938A Method for preparing sodium sulfate and barium chloride and coproducing powdery barium salt by using salting-out mother liquor generated in zinc powder method |
| 01/18/2012 | CN102320630A Production method of anhydrous sodium sulfate and production equipment thereof |
| 01/18/2012 | CN102320629A Method for producing reagent grade sodium sulfate by using white carbon black mother solution |
| 01/11/2012 | EP2403806A1 Removal of impurities in the production of crystalline sodium carbonate, bicarbonate, or sulfite |
| 01/11/2012 | CN102311195A Recycling utilization and processing method for wastewater generated in sebacic acid production process |
| 01/11/2012 | CN102311189A System for treatment of acid mine drainage and resource recovery of iron, aluminum, copper and zinc in drainage |
| 01/11/2012 | CN101837994B Production process of medicinal mirabilite |
| 01/04/2012 | CN102079603B High-concentration organic and inorganic mixed wastewater treatment and recovery method |
| 12/28/2011 | CN202089783U 芒硝型卤水冷冻-结晶分离系统 Glauber type brine freezing - crystallization separation system |
| 12/28/2011 | CN102295315A 有机磺化物生产废水中硫酸和硫酸钠分离方法 Sulfonated organic production of sulfuric acid and sodium sulfate wastewater separation |
| 12/21/2011 | CN202080906U 一种应用于红矾钠蒸发工艺的四效蒸发器 Applied to sodium dichromate evaporation process of four-effect evaporator |
| 12/21/2011 | CN101704687B 低温分解钾长石生产硫酸钾的方法 Low temperature decomposition of potassium feldspar production methods |
| 12/21/2011 | CN101700898B 一种氧化钼或钼废料碱浸-萃取制备钼酸铵工艺中无机盐的回收方法 One kind of molybdenum or molybdenum waste alkali leaching - extraction recovery method of preparation of ammonium salts process |
| 12/14/2011 | CN102276099A 一种红土镍矿湿法冶炼废水的综合处理方法 An integrated approach hydrometallurgical nickel laterite wastewater |
| 12/14/2011 | CN102275955A 一种利用磺化尾气吸收液制备芒硝的方法及装置 A use of sulfonated exhaust fluid absorption method and apparatus for preparing Glauber |
| 11/30/2011 | CN1914032B 生产石膏/纤维板的改进方法 Improved process for the production of gypsum / fiberboard |
| 11/30/2011 | CN102259897A 钠硝石连续浸取工艺 Nitratite continuous leaching process |
| 11/23/2011 | CN102249334A Method for preparing manganese sulfate, manganese hydroxide and potassium sulfate |
| 11/23/2011 | CN102249266A Method for preparing sodium carbonate and sodium sulfite |
| 11/23/2011 | CN102249265A Method for recycling semi-dry process desulphurization byproduct sodium sulfate |
| 11/23/2011 | CN102249262A Concentration and cold-precipitation separation method of sodium sulfate and ammonium sulfate from vanadium-precipitation mother liquor high-salt wastewater |
| 11/23/2011 | CN101928020B Continuous crystallization manufacturing process of medicinal glauber salt |
| 11/17/2011 | WO2011140855A1 Process for directly obtaining anhydrous sodium sulfate by flash evaporating and crystallizing and apparatus thereof |
| 11/16/2011 | CN202038998U Production system for recycling carbolic oil through acidolysis separation of phenol sodium salt and co-producing sodium sulfite |
| 11/16/2011 | CN102240120A Cooling pad |
| 11/10/2011 | WO2011138005A1 Impurities removal from waste solids in the production of soda ash, sodium bicarbonate and/or other derivatives |
| 11/10/2011 | US20110274599 Impurities removal from waste solids in the production of soda ash, sodium bicarbonate and/or other derivatives |
| 11/09/2011 | CN101830487B Process for manufacturing sodium sulfate for continuously crystallized medicament |
| 10/20/2011 | WO2011129563A2 Method of preparing anhydrous hydrogen fluoride by using sodium aluminum tetrafluoride and reaction device for the same |
| 10/12/2011 | EP1399387B1 Process for removing sodium sulfate from nickel hydroxide effluent streams |
| 10/12/2011 | CN101717099B Method for preparing potassium sulfite by using sea water |
| 10/05/2011 | CN102206748A Method for extracting potassium, rubidium, caesium and vanadium |
| 10/05/2011 | CN102206500A Coking additive and production method thereof |
| 10/05/2011 | CN102206140A Method and production system for separating and recovering phenol oil and simultaneously producing sodium sulfite through sodium phenolate acidolysis |
| 10/05/2011 | CN102205978A Method for producing high-quality sylvine in low cost |
| 10/05/2011 | CN102205977A Production method of ore brine crystal salt |
| 10/05/2011 | CN102205976A Recovery method of potassium ions in flotation tailing liquid and tailing |
| 09/20/2011 | CA2606160C Methods of forming an alkali metal salt |
| 09/20/2011 | CA2520857C Calcium hypochlorite blended tablets |
| 09/14/2011 | CN102180501A Method for preparing aluminum sulfate as well as potassium sulfate and ferric sulfate with alum pulp |
| 09/14/2011 | CN102180487A Method for recycling saltpeter-production dead steam |
| 09/14/2011 | CN102180452A Method for producing manganese phosphate as well as sodium sulfate and ammonium phosphate with manganese-containing waste liquid generated in production of hydroquinone |
| 09/14/2011 | CN102180449A Method for preparing potassium phosphate octahydrate combined with sodium sulfate decahydrate by alum sludge |
| 09/14/2011 | CN101723411B Process and equipment for producing potassium sulfate compound fertilizer by integrally utilizing tail gas generated in sulphuric acid production |
| 09/07/2011 | EP1708875B1 Improved process for production of gypsum/fiber board |
| 09/07/2011 | CN102173455A Method for producing chromium-containing product by using chromium-containing waste residue |
| 09/07/2011 | CN101844780B Process for treating mirabilite liquid |
| 09/06/2011 | US8012453 Carbon sequestration and production of hydrogen and hydride |
| 08/31/2011 | CN201952381U 甲酸钠法生产甲酸的芒硝收集装置 Sodium formate production of thenardite collection device |
| 08/31/2011 | CN102167382A Method for co-preparing barium nitrate, sodium carbonate and sodium hydrosulphite with barium mud |
| 08/31/2011 | CN102167372A Method for preparing aluminum hydroxide and iron hydroxide coproduced with potassium hydroxide and sodium sulfate by using vanadium slurry |
| 08/31/2011 | CN102167366A Method for preparing potassium carbonate, iron carbonate and co-preparing aluminum sulfate and sodium sulfate using alum paste |
| 08/31/2011 | CN102167365A Technique for preparing agricultural potassium sulfate by utilizing kaliophilite powder |
| 08/31/2011 | CN102167364A Method for preparing potassium sulfate with co-products of aluminum sulfate and ferric sulfate by using alum sludge hydrolysis filtrate |
| 08/31/2011 | CN102167360A Method for producing series of chlorides and potassium sulfate by using manganesian waste liquor generated in hydroquinone production |
| 08/31/2011 | CN102167297A Method for preparing anhydrous potassium phosphate with co-product of sodium sulfate from alum slurry |
| 08/31/2011 | CN102167296A Method for preparing potassium phosphate trihydrate with co-product of sodium sulphate decahydrate from alum slurry |
| 08/31/2011 | CN101786643B Method for comprehensively utilizing byproduct salt and alkali waste in production of hydrazine hydrate by urea process |
| 08/31/2011 | CN101712479B Method for preparing sodium sulfite by utilizing total alkali in hydrazine hydrate |
| 08/24/2011 | CN201942526U 利用含硫酸性气体直接生产亚硫酸钠的系统 The use of sulfur-containing acid gas system is the direct production of sodium sulfite |
| 08/24/2011 | CN102161494A Method for preparing carbonate and potassium sulphate blended product by using manganese-containing waste liquid |
| 08/24/2011 | CN102160960A Soda wet desulphurization process and system for sintering flue gas |
| 08/24/2011 | CN101624248B Method for processing wastewater in production of nickel cobalt lithium manganate |
| 08/17/2011 | CN102153157A ADC (Azodicarbonamide) foaming agent condensation mother liquor as well as washing waste water recycling device and method |