Matches 1 - 15 out of 15


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US20080118422 SYSTEM AND METHOD FOR CONVERSION OF MOLYBDENITE TO ONE OR MORE MOLYBDENUM OXIDES  
A system and method for producing molybdenum oxide(s) from molybdenum sulfide are disclosed. The system includes a pressure leach vessel, a solid-liquid separation stage coupled to the pressure...
US20130108526 METHOD FOR MATERIALS RECOVERY FROM CATALYSTS COMPRISING IRON, CERIUM, MOLYBDENUM, AND POTASSIUM  
A method for materials recovery from a catalyst comprising oxides of iron, cerium, molybdenum, and potassium, in which potassium and molybdenum are removed by treating the catalyst with an aqueous...
US20050069472 Chrome-based product in a hydrolyzed proteic compound and process for the making thereof  
Chrome-based product in a hydrolized proteic compound and process for the making thereof, comprising a step of solubilizing the protein-Chrome complex contained in tanning residues like e.g. the...
US20100111787 METHOD OF RECOVERING VALUABLE METALS FROM THE VRDS SPENT CATALYST  
The present invention discloses method of recovering valuable metals, such as vanadium, molybdenum, nickel from the catalysts spent in the VRDS process for desulfurization of pertroleum. The...
US20130294985 Titania-Supported Hydrotreating Catalysts  
TiO2-supported catalysts include at least molybdenum or tungsten as active components for hydrotreating processes, in particular for the removal of sulfur and nitrogen compounds as well as metals...
US20130078167 METHOD OF METALS RECOVERY FROM REFINERY RESIDUES  
A method of recovering vanadium, nickel and molybdenum from heavy crude oil refinery residues comprises pyrolysis and combustion of the residues at temperatures up to 900° C. to produce an ash,...
US20130150232 SLURRY CATALYST AND SLURRY FLAKES VALORIZATION  
The instant invention discloses a method for the valorization of spent catalyst from hydrocarbon processing slurry reactors as well as slurry flakes.
US20090148362 METHOD FOR RECOVERING TUNGSTEN  
A method for recovering tungsten from a reaction mixture obtained by reacting an organic compound with hydrogen peroxide in the presence of a tungsten catalyst comprising blowing a gas into the...
US20060188419 Method for production of alkali metal chromates  
This invention relates to a method for producing chromates, especially for producing alkali metal chromates. The method comprises following steps: the obtaining of a mixture of alkali metal...
US20100278686 PROCESS FOR RECOVERING METALS AND METAL COMPOUNDS FROM MINED ORE AND OTHER METAL-BEARING RAW SOURCE MATERIALS  
A method for selectively recovering a metal from mined ore and other metal-bearing raw source materials is disclosed. The method involves mixing with an aqueous medium a metal-bearing ore and/or...
US20070167321 Method for recovering molybdenum and method for preparing catalyst  
A method for obtaining a material containing recovered molybdenum for use in producing a catalyst from a molybdenum-containing material comprising at least molybdenum, A element (phosphorus and/or...
US20070090036 METHOD AND SYSTEM FOR DECREASING MOLYBDENUM AND/OR TUNGSTEN CONCENTRATION IN AQUEOUS SOLUTIONS  
A method and system for decreasing the concentration of at least one metal in an aqueous solution. The metal may be molybdenum, tungsten, or both. An aqueous solution is introduced into at least...
US20100226838 PROCESS FOR THE REMOVAL OF CATALYST DEGRADATION PRODUCTS  
The present invention relates to a process for the removal of metal catalyst degradation products from a bleed stream of a catalytic chemical reaction process, wherein the catalyst is based on a...
US20100135876 PROCESS FOR SOLUBILIZING, REDUCING AND FIXING HEXAVALENT CHROMIUM CONTAINED IN CHROMITE ORE PROCESSING RESIDUE INTO TRIVALENT CHROMIUM  
A process for reducing hexavalent chromium, Cr(VI), contained within a chromite ore processing residue matrix comprising the sequential steps of providing a chromite ore processing residue matrix...
US20140348729 PROCESS FOR SEPARATING AND RECOVERING METALS  
A process for treating spent catalyst containing heavy metals, e.g., Group VIB metals and Group VIII metals is provided. In one embodiment after deoiling, the spent catalyst is treated with an...

Matches 1 - 15 out of 15