| Patents for C22B 30 - Obtaining antimony, arsenic or bismuth (1,043) |
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| 05/14/2008 | CN201058245Y Pole hole type rectifying tower |
| 04/30/2008 | CN101171348A Method for the recovery of valuable metals and arsenic from a solution |
| 03/26/2008 | CN101148700A Treatment method for jamesonite and equipment thereof |
| 03/26/2008 | CN101148696A Dearsenization method for metallic ore by wet method |
| 03/19/2008 | CN101144125A Industrialized producing method for high-purity arsenic |
| 01/16/2008 | EP1877587A1 Method for the recovery of valuable metals and arsenic from a solution |
| 01/02/2008 | CN101096726A Production method for high-purity arsenic and its equipment |
| 01/01/2008 | US7314604 Adding air to an acidic solution containing arsenic(V), copper, ferric iron and ferrous iron in a continuously stirred tankto oxidize the ferrous to ferric ion and heating to precipitate FeAsO4; recycling a portion of FeAsO4; seeding with FeAsO4 to enhance crystalline formation |
| 12/27/2007 | US20070295613 Recovery Of Metals From Oxidised Metalliferous Materials |
| 12/19/2007 | CN100355918C Preparation method and use of single, compound arsenic with bio-effect |
| 12/05/2007 | CN101082084A Technique for reclaiming smelting refined bismuth from bismuth slag |
| 12/05/2007 | CN101082079A Plant arsenic-extraction pretreatment method for lowering smelting selection cost of high-arsenic gold ore |
| 11/28/2007 | CN101078057A Method for smelting arsenic-containing gold concentrate |
| 11/28/2007 | CN101078053A Method for extracting metal indium, zinc and bismuth from blast furnace gas ash |
| 11/28/2007 | CN101078052A Method for synthetically reclaiming iron and non-ferrous metal from solid waste of iron and steel plant |
| 11/14/2007 | CN101069781A Column-hole type rectification tower |
| 11/08/2007 | WO2007125627A1 Method of treating arsenic-containing solution |
| 11/08/2007 | CA2648869A1 Method of treating arsenic-containing solution |
| 10/18/2007 | WO2007115377A1 Process for recovery of antimony and metal values from antimony- and metal value-bearing materials |
| 10/18/2007 | WO2003074743A3 Process for bismuth recovery from lead-bismuth dross |
| 10/18/2007 | CA2648951A1 Process for recovery of antimony and metal values from antimony- and metal value-bearing materials |
| 10/10/2007 | CN101049933A Method for preparing metallic and nonmetallic Nano granules through hydrolysis method for compound containing magnesium |
| 10/03/2007 | CN101048519A A process for-reprocessing oxidic by-products containing arsenic |
| 09/26/2007 | CN101041498A Method for reclaiming valuable element from acidic arsenic-containing biological oxidation gold extraction waste liquor |
| 09/19/2007 | CN101037725A Method for treating arsenic pollution of copper smelt industry |
| 08/15/2007 | CN101016582A Method of removing arsenic for anode mud with high arsenic and lead content |
| 08/14/2007 | US7255922 Inorganic nanoparticle and method for producing the same |
| 08/01/2007 | CN2928871Y Stibium tiroxide smelting furnace with multiple reactor |
| 07/11/2007 | CN1325674C Metal antimony purifying method and apparatus |
| 06/27/2007 | CN1986854A As-eliminating antimony refining process with NaoH |
| 06/27/2007 | CN1986853A Sulfide antimony ore settling and smelting process in a reverberatory furnace to produce star metal |
| 06/27/2007 | CN1986851A Two-section roasting production process for recovering Au, Cu, Ag, As and s from As and C containing aurin ore |
| 06/19/2007 | US7232554 Concentrating acid solution in evaporator series, crystallizing arsenic in solution as arsenic trioxide crystals, filtering crystallized solution to obtain solid phase comprising impure arsenic trioxide crystals, purifying |
| 06/13/2007 | CN1321200C Method for separating copper, arsenic and zinc from copper-smelting high-arsenic flue dust sulphuric acid leach liquor |
| 05/30/2007 | CN1318621C Method for separating and recovering Sb and Bi |
| 05/23/2007 | CN1966742A Technology for separating indium and antimony in indium extraction process |
| 05/02/2007 | CN1955325A Impurity removing refining process of high pure bismuth |
| 03/28/2007 | CN1938436A Recovery of metals from oxidised metalliferous materials |
| 02/14/2007 | CN1912158A Preparation method and use of single, compound arsenic with bio-effect |
| 02/14/2007 | CN1912157A Preparation method and use of bioactive sing-compound arsenic |
| 02/14/2007 | CN1911079A Carried type, super-fine, active elemental arsenic, prepn. method and use thereof |
| 02/07/2007 | CN1908208A Technique of comprehensive recovering valuable metal in chlorine-oxygen-antimony slag |
| 01/17/2007 | CN1295365C Vacuum recrystallization method for purifying metallic antimony and equipment thereof |
| 01/17/2007 | CN1295358C Method for enriching bismuth by polyvinyl alcohol amine oxime chelate fiber |
| 12/06/2006 | EP1727916A1 Recovery of metals from oxidised metalliferous materials |
| 12/06/2006 | CN1873061A Method for producing grain sizes even distributed antimony trioxide in single crystal type, and equipment |
| 11/09/2006 | WO2006117424A1 Method for the recovery of valuable metals and arsenic from a solution |
| 11/09/2006 | CA2605005A1 Method for the recovery of valuable metals and arsenic from a solution |
| 11/01/2006 | CN1854062A Homogenotic nanometer bismuth heterojunction and its production |
| 10/18/2006 | CN1280434C Process for the treatment or removal of impurities in a hydrometallurgical extraction process |
| 08/09/2006 | CN2804120Y Vacuum fractinal distillation purifying appts for sb |
| 07/12/2006 | CN1800423A Process for producing antimony white using slag from lead anode mud processing |
| 07/12/2006 | CN1800421A Recovering process of valent metal from crude bismuth |
| 07/04/2006 | US7069690 Demetallization, dephosphatizing; water pollution control |
| 06/27/2006 | US7066982 Contaminant removal by ferns via foliar-application and excised/ground fronds |
| 06/27/2006 | US7065920 Contaminant removal by additional ferns |
| 06/21/2006 | CN1789445A Method for separating copper, arsenic and zinc from copper-smelting high-arsenic flue dust sulphuric acid leach liquor |
| 06/21/2006 | CN1260381C Process for comprehensive recovering gallium and arsenic from industrial waste material of gallium arsenide |
| 05/31/2006 | EP1495149B1 Process for the treatment or removal of impurities in a hydrometallurgical extraction process |
| 04/19/2006 | CN1760385A Vacuum distillation method for separating sibium element from mixed metals in worn out printing circuit board |
| 04/19/2006 | CN1760382A Vacuum distillation method for separating bismuth element from mixed metals in worn-out printing circuit board |
| 04/05/2006 | CN1249269C Method for recovering stibium and bismuth from copper electrolyte |
| 03/29/2006 | CN1752236A Dearsenic technique for high-arsenic complicated solution |
| 03/29/2006 | CN1752235A Methpd for separating and recovering Sb and Bi |
| 02/23/2006 | WO2005031758A3 Method for producing carrier-free 72as, device for automatically producing carrier-free 72as, carrier-free 72as(iii) halide, and use thereof |
| 02/23/2006 | US20060037437 Non-pollution process of extracting arsenic in vacuum and the equipment thereof |
| 02/01/2006 | CN1239721C Method for treating materiel of containing arsenic |
| 01/25/2006 | CN1238535C Process for separating antimony from gold-antimony ore using wet metallurgical technology |
| 01/12/2006 | US20060005665 Process for extracting gold in arsenic-containing concentrate of gold and the equipment thereof |
| 12/28/2005 | CN1233860C Vacuum arsenic extracting method and system without pollution |
| 12/28/2005 | CN1233857C Decoppering refining agent in use for fire refining of non-ferrous metal with low melting point and technical procedure |
| 12/14/2005 | CN1231606C Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace |
| 12/06/2005 | US6972414 method and apparatus for isolating and purifying a 213Bi radioactive isotope from an 225Ac source without generating excessive waste |
| 11/17/2005 | US20050255319 Skutterudite compound that can be used for a thermoelectric conversion material |
| 10/26/2005 | CN1687469A Vacuum recrystallization method for purifying metallic antimony and equipment thereof |
| 10/06/2005 | WO2005093107A1 Recovery of metals from oxidised metalliferous materials |
| 10/06/2005 | CA2560594A1 Recovery of metals from oxidised metalliferous materials |
| 10/05/2005 | CN1676639A Method for producing white arsenic using high-surfur high-arsenic-tin ore tailing |
| 10/05/2005 | CN1676638A Metal antimony purifying method and apparatus |
| 10/05/2005 | CN1676637A Pollution-free arsenic alkali slage treating technique |
| 10/05/2005 | CN1221674C Method for extracting gold from arsenic and gold contained headings |
| 08/24/2005 | CN1216162C Method of removing arsenic and selenium for antimony smelting by pyrometallurgy |
| 08/17/2005 | CN1656238A Process for the treatment or removal of impurities in a hydrometallurgical extraction process |
| 08/04/2005 | US20050167609 Method and apparatus for production of 213bi from a high activity 225ac source |
| 08/03/2005 | CN1213157C Smelting production process for regnerated antimony |
| 06/07/2005 | CA2065837C Process for treating ore having recoverable metal values including arsenic containing components |
| 05/25/2005 | CN1203198C Method for separating lead and antimony from lead antimony crude alloy |
| 04/21/2005 | US20050082221 phytoremediation using various fern plants for removing contaminated substances such as arsenic, from sites containing polluted soils and waters and airborne substances such as those found with waste water, ground water, surface water |
| 04/07/2005 | WO2005031758A2 Method for producing carrier-free 72as, device for automatically producing carrier-free 72as, carrier-free 72as(iii) halide, and use thereof |
| 03/23/2005 | CN1598016A Process for comprehensive recovering gallium and arsenic from industrial waste material of gallium arsenide |
| 03/01/2005 | US6861037 Method of removal of impurities from gold concentrate containing sulfides |
| 02/01/2005 | CA2299960C Solution purification method for electrolyte |
| 01/12/2005 | EP1495149A1 Process for the treatment or removal of impurities in a hydrometallurgical extraction process |
| 12/30/2004 | DE10344101B3 Producing carrier-free arsenic-72, e.g. useful for positron emission tomography, comprises irradiating target to produce selenium-72 and generating arsenic-72 by radioactive decay |
| 12/29/2004 | CN1182266C Equipment for preparing antimory oxide from PbSb alloy |
| 10/27/2004 | CN1540007A Decoppering refining agent in use for fire refining of non-ferrous metal with low melting point and technical procedure |
| 10/27/2004 | CN1540006A Technique for integrated treatment for fuming of dregs of lead/stibium blast furnace |
| 10/13/2004 | CN1170949C Method for selective precipitating arsenic from steel-containing ferric and ferric solution |
| 10/07/2004 | US20040197812 Contaminant removal by ferns via foliar-application and excised/ground fronds |
| 09/22/2004 | CN1530453A Treatment of slag from smelting lead and antimony |