| Patents for C01D 5 - Sulfates or sulfites of sodium, potassium, or alkali metals in general (1,848) |
|---|
| 12/11/2013 | CN103435467A Method for extracting n-butyric acid, n-pentanoic acid and n-hexylic acid from waste alkali liquor of byproducts in production of cyclohexanone |
| 12/11/2013 | CN103435074A Method for producing potassium sulfate from byproducts in lithium salt production process |
| 12/11/2013 | CN103435072A Method and equipment for treating production waste of polycrystalline silicon |
| 12/04/2013 | CN103420402A Method for extracting soluble potassium from potassium feldspar through alkaline process |
| 12/04/2013 | CN103420401A Method for preparing large-particle picromerite |
| 12/04/2013 | CN103420399A Method for extracting soluble potassium from potassium feldspar by using acid process |
| 12/04/2013 | CN102530998B Bloedite mineralizing brine mixing clear liquid nitre freezing process |
| 11/28/2013 | US20130315805 Process For Simultaneous Production Of Potassium Sulphate, Ammonium Sulfate, Magnesium Hydroxide And/Or Magnesium Oxide From Kainite Mixed Salt And Ammonia |
| 11/28/2013 | US20130313758 Electrospinning process for fiber manufacture |
| 11/27/2013 | CN103408046A Method for separating sodium and magnesium from laterite-nickel ore smelting primary wastewater |
| 11/27/2013 | CN103408040A Method for preparing sodium hydrogen sulfate through microwave radiation |
| 11/27/2013 | CN102372292B Technology for preparing potassium sulfate with potassium-rich mother liquid and phosphogypsum |
| 11/20/2013 | CN103397201A Method for statically leaching and extracting potassium from polyhalite and preparing potassium sulphate |
| 11/20/2013 | CN103395925A Treatment method for recycling para-hydroxybenzoic acid wastewater |
| 11/20/2013 | CN103395796A Comprehensive utilization method of serpentine and device used by method |
| 11/20/2013 | CN102424403B Removal of calcium and magnesium in anhydrous sodium sulfate flue gas and continuous feeding method |
| 11/13/2013 | CN103387506A Method for producing EDTA ferric sodium salt by recovering Fe<II>EDTA wet-process complexed denitrated waste-liquid |
| 11/13/2013 | CN103387244A Method for enriching lithium in carbonate type salt lake brine |
| 11/13/2013 | CN103387243A Production process for NH4KSO4 by using hydrochloric acid mother liquor method |
| 11/13/2013 | CN102964019B Energy-saving evaporation treatment process of high-salinity wastewater |
| 11/13/2013 | CN102432047B Extracting and zero-discharging method of seawater bittern multi-elements |
| 11/07/2013 | US20130292333 Method for separating and recovering purified alkali metal salt |
| 11/06/2013 | CN102815812B Optimization process method for recovering sodium sulfate form ethylene waste alkali |
| 11/06/2013 | CN102815811B Short flow method for recycling sodium sulfate from ethylene waste alkali liquid |
| 11/06/2013 | CN102452674B Processing method for recycling sodium sulfate from waste alkali liquor in ethylene unit |
| 11/06/2013 | CN102432131B Resource recovery equipment for roasting with sodium and leaching acid ammonium salt vanadium settling wastewater |
| 10/30/2013 | CN102372293B 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 |
| 10/29/2013 | CA2552577C Improved process for production of gypsum/fiber board |
| 10/23/2013 | CN203247105U Dual-blade drying device |
| 10/23/2013 | CN203247104U Anhydrous sodium sulphate production system |
| 10/16/2013 | CN102502986B Comprehensive utilization method of ionic membrane electrolytic saline solution waste liquid |
| 10/09/2013 | CN103341322A Pretreatment method for preparing acid/base from viscose fiber sodium sulfate waste liquid by using bipolar membrane electrodialysis method |
| 10/09/2013 | CN102249265B Method for recycling semi-dry process desulphurization byproduct sodium sulfate |
| 10/08/2013 | US8551429 Methods of processing polyhalite ore, methods of producing potassium sulfate, and related systems |
| 10/02/2013 | CN103332821A Method for treating waste water containing sulfuric acid in production process of dyes and intermediates |
| 10/02/2013 | CN103332751A Ferrous sulfate comprehensive utilization method |
| 10/02/2013 | CN103332708A Salt-nitrate coproduction method |
| 10/02/2013 | CN103332705A Device for producing sodium nitrate by six-effect evaporation of sodium sulfate brine |
| 10/02/2013 | CN103331028A Salt leg device of salt-making evaporation tank |
| 10/01/2013 | US8545225 Redox-curing type composition |
| 09/25/2013 | EP2640664A1 Method for recovering potassium sulphate from biodiesel production |
| 09/25/2013 | CN103318924A Energy-saving equipment and energy-saving method for smelting mine by virtue of waste heat |
| 09/25/2013 | CN103318923A Method for recovering sodium sulfate from white carbon black mother solution |
| 09/25/2013 | CN102502715B Method for reclaiming reagent-grade anhydrous sodium sulfate from basic nickel carbonate production waste liquor |
| 09/25/2013 | CN102452769B Processing method for waste alkali liquor in ethylene unit |
| 09/18/2013 | CN103303945A Vapor recovery system and method for sodium sulfite evaporation and concentration process |
| 09/18/2013 | CN103303943A Purifying process of mirabilite type brine by adopting lime-carbon dioxide process |
| 09/18/2013 | CN102491419B Method for comprehensively recycling waste vanadium catalyst |
| 09/11/2013 | CN103288625A Method for purifying mixed organic salts obtained by microbial fermentation production of 1, 3-propanediol |
| 09/11/2013 | CN101786738B Ecological optimization production process for all-seawater industry |
| 09/05/2013 | US20130230439 Method for recovering potassium sulphate from biodiesel production |
| 09/04/2013 | CN203173836U Anhydrous sodium sulphate preparing device |
| 09/04/2013 | CN103274366A Method for efficiently recycling elemental sulfur in process of treating sulfur dioxide flue gas by using sodium sulfide |
| 08/28/2013 | CN203159240U Equipment for performing nitrified water purification by virtue of quick lime and boiler smoke |
| 08/22/2013 | WO2013120139A1 A process for producing hydrogen chloride and potassium sulphate based salts |
| 08/21/2013 | CN203144212U Device for treating calcium mud and recovering nitrate water |
| 08/21/2013 | CN203144117U Anhydrous sodium sulphate recovery device |
| 08/21/2013 | CN103253819A Device and production technology for treating ternary-monomer wastewater and extracting sodium sulfate |
| 08/21/2013 | CN103253686A Method for producing vegetalitas fulvic acid/potassium sulfate concentrated solution/vegetalitas organic bacterial manure by utilizing alcohol biologic wastewater |
| 08/15/2013 | WO2013117950A1 A combined reverse osmosis/ion exchange/electrodialysis (croied) process that uses gypsum as a raw material to produce sulfuric acid and sodium hydroxide |
| 08/14/2013 | CN103241885A Method for treating acid waste water of disperse dye |
| 08/14/2013 | CN103241749A Anhydrous sodium sulfate production system and production method |
| 08/14/2013 | CN103241748A Process method for preparing anhydrous sodium sulphate based on flash vaporization crystallization of acid bath |
| 08/14/2013 | CN102452672B Method for recycling sodium sulfate from waste alkali liquor of ethylene unit |
| 08/07/2013 | CN103237760A Method for separation and collection of purified alkali metal salt |
| 08/07/2013 | CN101835727B Process of removing calcium and obtaining sulfate salts from an aqueous sugar solution |
| 07/31/2013 | CN103224244A Method for enriching and separating beneficial elements in sulfate type salt lake brine by using nature energy |
| 07/31/2013 | CN102351217B Method of removing lead in by-product sodium sulfate of recovery and processing of waste lead storage batteries |
| 07/24/2013 | CN102531221B Method used for processing waste water after vanadium precipitation |
| 07/17/2013 | CN203065173U Fine aqueous glauber salt purification and separation system |
| 07/17/2013 | CN103204520A Method for preparing single-form potassic salt ore from plateau sulfate type salt lake brine |
| 07/17/2013 | CN102786176B Comprehensive utilization method of catalytic cracking gasoline sludge |
| 07/17/2013 | CN102626674B Method for extracting vesuvius salt from carbonate saline lake |
| 07/17/2013 | CN102432038B Method and device for removing chlorine and potassium ions in fly ash produced by alkali recovery furnace and recovering sulfate radical |
| 07/10/2013 | CN103193517A Method for producing potassic fertilizer and co-producing special cement by utilizing potash feldspar |
| 07/10/2013 | CN103193516A Method for preparing potassium sulphate fertilizer and co-producing special cement from potassium rock |
| 07/10/2013 | CN103193253A Pressurized acid-leaching potassium extracting technology for potassium feldspar |
| 07/03/2013 | CN203033780U Anhydrous sodium sulfate evaporation and concentration equipment |
| 07/03/2013 | CN103183365A Method for producing potassium sulphate and co-producing calcium, magnesium, phosphorus and silicon composite fertilizer by potassium feldspar |
| 07/03/2013 | CN102583451B Method for preparing sodium sulfate and magnesium nitride compound fertilizer by processing astrakhanite |
| 07/02/2013 | CA2661479C Potassium magnesium fertilizer |
| 06/26/2013 | CN103172088A Application of MVR (mechanical vapor recompression) crystallizing evaporator in sodium sulfate and sodium chloride separation technology |
| 06/26/2013 | CN102417193B Production method for increasing nitrate removal capacity by membrane method |
| 06/26/2013 | CN102206140B Method and production system for separating and recovering phenol oil and simultaneously producing sodium sulfite through sodium phenolate acidolysis |
| 06/25/2013 | US8470055 Combined process for preparing calcined soda by applying surface engineering technology to natural soda preparation |
| 06/19/2013 | CN203006961U Device for preparing sodium metabisulfite and anhydrous sodium sulfite |
| 06/19/2013 | CN203006960U System for preparing sodium metabisulfite and anhydrous sodium sulfite by using pyrite fluidization roasting method |
| 06/19/2013 | CN103159235A Method for removing chlorine and potassium ions and recycling sulfate radicals in flying ash in soda recovery furnace |
| 06/12/2013 | CN103145154A Method for recovering sodium chlorite liquid waste |
| 06/12/2013 | CN103145153A Application of MVR (Mechanical Vapor Recompression) crystallization evaporator to industrialized production of anhydrous sodium sulphate |
| 06/12/2013 | CN102531222B Treatment method for vanadium precipitating waste water |
| 06/12/2013 | CN102092880B Process for freezing and denitriding primary brine with membrane method in polyvinyl chloride production |
| 06/11/2013 | US8460631 Processing of manganous sulphate/dithionate liquors derived from manganese resource material |
| 06/06/2013 | US20130142716 Method and system for reducing industrial emissions |
| 06/05/2013 | CN103130370A Dye acidic waste water treatment method and device |
| 06/05/2013 | CN103130249A Preparing method of crystallized sodium sulfate in liquid SO2 by means of sodium citrate |
| 06/05/2013 | CN103130248A Method for preparing potassium salt from biomass fuel boiler ash |
| 06/05/2013 | CN102452696B Treatment method for high salt content and high COD alkaline residue neutralization water |
| 05/23/2013 | WO2013074328A1 Methods of processing polyhalite ore, methods of producing potassium sulfate, and related systems |
| 05/23/2013 | CA2855492A1 Methods of processing polyhalite ore, methods of producing potassium sulfate, and related systems |