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7625542 |
Method for the production of metal carbides
Methods for the production of monometal carbides are disclosed. A metal source and a carbon source are reacted under conditions suitable to produce a reaction product. The reaction product may...
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7618561 |
Organic silver compound and it's preparation method, organic silver ink and it's direct wiring method
The present invention is to manufacture the organic silver solution by dissolving silver oxide in an organic solvent, and further provide an ink enabling a conductive circuit to be formed by...
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7604784 |
Process for the extraction of specific transition metals with gaseous HCL
A process is disclosed for separation and recovery of vanadium, molybdenum, iron, tungsten, cobalt and nickel from alumina-based materials, mattes, ores, manufacturing by-products and waste. These...
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7591984 |
Preparation of tungsten oxide
Tungsten trioxide hydrate (WO 3 .H 2 O) was prepared from a precursor solution of ammonium paratungstate in concentrated aqueous hydrochloric acid. The precursor solution was rapidly added to...
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7588926 |
Proteases
The invention relates to a novel class of serine proteases of peptidase family S2A or S1E that are stable in the presence of copper (Cu2+) and/or inhibited by copper only to a limited extent....
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7531690 |
Palladium, tungsten and zirconium-based catalyst for production of oxygen-containing compound, production process of the catalyst, and production process of oxygen-containing compound using the catalyst
A catalyst for the production of an oxygen-containing compound, comprising palladium, tungsten and zirconium, a production process thereof, and a production process of an oxygen-containing compound...
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7455825 |
Method for manufacturing metal sulfide nanocrystals using thiol compound as sulfur precursor
Disclosed herein is a method for manufacturing metal sulfide nanocrystals using a thiol compound as a sulfur precursor. The method comprises reacting the thiol compound and a metal precursor in a...
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7387767 |
Recovery of nickel, cobalt, iron, silica, zinc and copper from laterite ore by sulfuric acid leaching
A process for recovering nickel and cobalt values from nickel- and cobalt-containing laterite ores as an enriched mixed nickel and cobalt sulphide intermediate and for producing nickel and cobalt...
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7341700 |
Method for recovery of metals from metal-containing materials using medium temperature pressure leaching
The present invention relates generally to a process for recovering copper and other metal values from metal-containing materials using controlled, super-fine grinding and medium temperature...
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7276226 |
Chromium dioxide (CrO2) and composites of chromium dioxide and other oxides of chromium such as CrO2/Cr2O3 and CrO2/Cr2O5) and process for manufacturing the same
A novel process for preparing chromium dioxide of substantially high purity as well as composites of CrO 2 /Cr 2 O 3 and CrO 2 /Cr 2 O 5 following a sequence of simple steps. The process does not...
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7220394 |
Process for simultaneous recovery of chromium and iron from chromite ore processing residue
The present invention relates to a process for simultaneous recovery of chromium and iron from Chromite Ore Processing Residue (COPR) and more particularly, the present invention relates to an...
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7217406 |
Lithium-manganese composite oxide granular secondary particle, method for production thereof and use thereof
Granular secondary particles of a lithium-manganese composite oxide suitable for use in non-aqueous electrolyte secondary batteries showing high-output characteristics which are granular secondary...
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7217366 |
Purification of ammonium metallate solutions
A process for reducing the content of alkali metal impurities (e.g., potassium) in ammonium metallate solutions is described. The process involves subjecting a feed solution containing ammonium...
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7157072 |
Cathode composition for lithium batteries and method of preparing the same
Provided is a cathode composition for lithium secondary battery that includes a lithium-chromium-titanium-manganese oxide that has the formula Li[Li (1-x)/3 Cr x Ti (2/3)y Mn 2(1-x-y)/3 ]O 2 where...
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7122168 |
Shape anisotropic metal oxide nanoparticles and synthetic method thereof
In a metal oxide nanoparticle and a synthetic method thereof, and in particular to maghemite (γ-Fe 2 O 3 ) nanoparticles usable as a superhigh density magnetic recording substance by having good...
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7118727 |
Method of making oxide particles
The present invention provides a process for producing particles, such as oxide nanoparticles, in a substantially water-free environment. The process involves mixing at least one metal compound of...
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6911470 |
Polyoxometalate compounds as antiviral agents
Polyoxometalate compounds which exhibit anti-retroviral activity are disclosed. Compounds with anti-retroviral activity include those having the following general molecular formulas:
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6818191 |
Autoclave control mechanisms for pressure oxidation of molybdenite
The process chemistry during the oxidation of molybdenite concentrates in an oxygen pressure leach can be controlled by regulating the amount of ferric iron and excess sulfuric acid recycled as...
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6620324 |
Methods for purifying a solvent
An improved inclusive method for purifying a polar solvent such as water includes the re-suspension of finely divided layered materials within which contaminants have been captured, wherein the...
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6582814 |
Rare earth-transition metal oxide pigments
Rare earth-transition metal oxides are used as pigments. The rare earth-transition metal oxide pigments are preferably of the formula (Re x Tm)O y , where Re is at least one rare earth element, Tm...
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6508993 |
Method for dissolving base metals and nobel metals from ores containing them
A method for dissolving base metals and noble metals from ores having base metals and noble metals which comprises adding the ore to a solution of a non-acid oxidizing agent, then adding an aqueous...
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6461581 |
Clathrate compounds and manufacturing method thereof
The present invention provides a clathrate compound which can be used as a thermoelectric material, a hard material, or a semiconductor material. Silicon or carbon are formed into a clathrate...
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6383458 |
Biooxidation process for recovery of metal values from sulfur-containing ore materials
A process for the recovery of one or more metal values from a metal ore material comprising those of one or more values and a matrix material having a sulfur content wherein the sulfur is present...
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6350420 |
Resin-in-pulp method for recovery of nickel and cobalt
A process is provided for the direct recovery of nickel and cobalt from a nickeliferous oxide ore leach slurry by ion exchange. A nickeliferous ore is leached with mineral acid to solubilize the...
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6190625 |
Fluidized-bed roasting of molybdenite concentrates
The present invention provides a method for fluidized bed roasting of molybdenite to molybdenum trioxide. A fluid bed reactor separated into separate zones is used to provide plug flow conditions....
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6180072 |
Process to recover metals from spent catalyst
There is provided a process to reclaim metals from catalysts, said process comprising collecting one or more catalyst containing at least one metal sulfide; leaching the catalyst in an atmospheric...
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6153155 |
Recovery of the transition metal component of catalyst used in heavy feed hydroconversion
The invention relates to a process for recovering the transition metal component of catalysts used in the hydroconversion of heavy hydrocarbonaceous materials. In accordance with the invention, a...
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6051196 |
Purification of phosphorus containing scheelite ore
A method for purifying a phosphorus containing scheelite ore is described wherein the calcite phase is selectively dissolved prior to dissolution of the apatite phase. Selective dissolution of the...
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5972301 |
Minimizing emission of hexavalent chromium from combustion sources
Formation of hexavalent chromium is reduced during incineration/combustion of materials containing hexavalent chromium by adding to the waste prior to or during combustion a small amount of sulfur....
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5958358 |
Oriented polycrystalline thin films of transition metal chalcogenides
A method of preparing a polycrystalline thin film of a transition metal chalcogenide of an orientation on a substrate which includes (a) depositing a layer of a transition metal material or...
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5945342 |
Method for digesting spent ion exchange resins and recovering actinides therefrom using microwave radiation
The present invention relates to methods for digesting diphosphonic acid substituted cation exchange resins that have become loaded with actinides, rare earth metals, or heavy metals, in a way that...
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5932184 |
Method for recovery of tungsten from spent catalysts
A method for recovering tungsten from a tungsten containing spent catalyst comprises digesting the catalyst in aqueous sodium hydroxide solution wherein the mole ratio of the sodium hydroxide to...
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5882620 |
Pyrometallurgical process for forming tungsten carbide
A process for forming a salt, such as sodium tungstate, using a pyrometallurgical operation is provided. A slagging operation is performed in which a metal-containing material is melted in the...
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5874374 |
Method for producing engineered materials from salt/polymer aqueous solutions
A method for producing engineered materials from salt/polymer aqueous solutions in which an aqueous continuous phase having at least one metal cation salt is mixed with a hydrophilic organic...
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5820844 |
Method for the production of a purified MoO.sub.3 composition
A method for producing purified MoO 3 from MoS 2 . MoS 2 is initially oxidized to generate an impure MoO 3 product containing metallic contaminants and molybdenum sub-oxides. This product is...
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5804151 |
Process for autoclaving molybdenum disulfide
A method for producing MoO 3 from MoS 2 . MoS 2 is combined with water to form a slurry which is then combined with at least one oxygen-containing oxidizing gas in a reaction chamber in order to...
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5795837 |
Process for preparing molybdenum, molybdenum silicides or carbides/ceramic admixtures and sintered composites
The present invention provides a process for preparing a molybdenum, molybdenum silicide or molybdenum carbide/ceramic admixture, comprising dissolving molybdenum trioxide powder with an alkaline...
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5776264 |
Method for producing amorphous based metals
Amorphous tungsten, cobalt, nickel, molybdenum, iron and alloys thereof can be formed by reducing metal-containing compositions to form the elemental metal wherein the particle size of the...
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5698483 |
Process for preparing nanosized powder
A process for producing nano size powders comprising the steps of mixing an aqueous continuous phase comprising at least one metal cation salt with a hydrophilic organic polymeric disperse phase,...
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5594929 |
Method of preparing powders for hard materials
According to the invention there is now provided a simple method of preparing a powder containing WC and cobalt and/or nickel. APT-powder and a powder of a basic salt of cobalt and/or cobalt are...
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5587142 |
Method of dissolving metal oxides with di- or polyphosphonic acid and a redundant
A method of dissolving metal oxides using a mixture of a di- or polyphosphonic acid and a reductant wherein each is present in a sufficient amount to provide a synergistic effect with respect to...
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5571489 |
Process for chromium recovery from aqueous solutions
A process for recovery of chromium in an aqueous solution comprising converting the chromium to chromyl chloride, separating the chromyl chloride from the aqueous solution, either as a heavy...
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5547646 |
Process for the decomposition of chrome ore by alkaline oxidation
A process for the decomposition of chrome ore by alkaline oxidation by mixing finely divided chrome ore with alkaline compounds, heating the mixture in an indirectly heated rotary kiln to...
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5508010 |
Method of separating fission molybdenum
In a method of separating fission molybdenum from other fission products, wherein an aqueous solution of the fission molybdenum and the other fission products is supplied to a packet bed of...
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5503813 |
Molybdenum recovery from epoxidate
Epoxidate from the molybdenum catalyzed epoxidation of an olefin such as propylene with a hydroperoxide such as ethylbenzene hydroperoxide is treated with 2 to 15 times the stoichiometric...
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5482690 |
Low-residue high-extraction production of sodium dichromate
The invention relates to a process for the low-waste production of sodium dichromate from the mineral chromite with simultaneous recovery of low-carbon ferrochromium.
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5447552 |
Process for the extraction and separation of nickel and/or cobalt
The invention provides a hydrometallurgical process for the recovery of metals. In particular, an aqueous feed solution originating from acid leaching is provided. The aqueous feed solution...
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5415849 |
Process for dissolving used catalyst
A process for dissolving used catalyst includes the steps of roasting, after subjecting to an optional deoiling treatment, the used catalyst at a temperature lower than 1,000° C. but not lower...
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5415847 |
Treatment of pit waste containing chromated copper arsenate
A chemical process for treating pit waste contaminated with chromated copper arsenate (i.e. CCA). CCA is recovered for recycling, and remaining solids are decontaminated for safe disposal. Pit...
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5342589 |
Process for converting chromium dioxide magnetic pigment particles into nonmagnetic chromium (III) oxide
According to a process for converting chromium dioxide into chromium (III) oxide, a composite comprising chromium dioxide particles dispersed in an organic matrix is provided. In a first heating...
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