|
Match
|
Document |
Document Title |
|
|
8177882 |
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...
|
|
|
8057763 |
Process for recovering group VIB metals from a catalyst
The invention relates to a process for recovering Group VIB metals from a catalyst, in particular a spent bulk catalyst, comprising one or more Group VIB metals and one or more Group VIII metals....
|
|
|
8043399 |
Process for rapid microwave-enhanced detoxification of CCA-treated wood
A method for detoxifying spent CCA (copper, chromium, arsenic) treated wood, from which CCA is efficiently removed from the wood, allowing both the CCA and the wood to be reused has been developed....
|
|
|
7993614 |
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...
|
|
|
7968066 |
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...
|
|
|
7955588 |
Metal sulfide catalysts and methods of making same
Methods and apparatus relate to catalysts and preparation of the catalysts, which are defined by sulfides of a transition metal, such as one of molybdenum, tungsten, and vanadium. Precursors for...
|
|
|
7846404 |
Process for separating and recovering base metals from used hydroprocessing catalyst
A method is disclosed for separating and recovering base metals from a used hydroprocessing catalyst originating from Group VIB and Group VIII metals and containing at least a Group VB metal. In...
|
|
|
7837960 |
Process for separating and recovering base metals from used hydroprocessing catalyst
A method is disclosed for separating and recovering base metals from a used hydroprocessing catalyst originating from Group VIB and Group VIII metals and containing at least a Group VB metal. In...
|
|
|
7824633 |
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...
|
|
|
7794677 |
Reduction of copper content in the molybdenite concentrate
Methods and systems for removing copper minerals from a molybdenite concentrate. One embodiment provides leaching copper from the molybdenite concentrate with a leaching solution comprising ferric...
|
|
|
7736607 |
Process for metals recovery from spent catalyst
The process of this invention is directed to the removal of metals from an unsupported spent catalyst. The catalyst is subjected to leaching reactions. Vanadium is removed as a precipitate, while a...
|
|
|
7670576 |
Methods of treatment of chromite ore processing residue
Methods to reduce hexavalent chromium (Cr(VI)) in chromite processing wastes include one or more of the following steps: contacting the chromite processing wastes with an oxygen scavenger or...
|
|
|
7658895 |
Process for recovering base metals from spent hydroprocessing catalyst
A method for recovering metals from a spent dispersed catalyst originating from a Group VIB metal sulfide catalyst containing at least a Group VB and Group VIII metal for hydrocarbon oil...
|
|
|
7537741 |
Gold and silver recovery from polymetallic sulfides by treatment with halogens
A method for treating a polymetallic sulfide ore containing gold and/or silver, and further containing base metals selected from the group consisting of iron, aluminum, chromium, titanium, copper,...
|
|
|
7485267 |
Process for metals recovery from spent catalyst
The process of this invention is directed to the removal of metals from an unsupported spent catalyst. The catalyst is subjected to leaching reactions. Vanadium is removed as a precipitate, while a...
|
|
|
7318914 |
Chromium removal from leach liquors produced during high pressure acid leaching of lateritic ores
A method is provided for the removal of chromium from leach liquors produced during high pressure leaching of laterite ores in an autoclave, by addition to the autoclave of carbon in a quantity of...
|
|
|
7261820 |
Method for decreasing a concentration of metal in aqueous solution
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...
|
|
|
7255795 |
Process for selectively removing molybdenum from liquid mixtures containing it together with vanadium
Process for selectively removing molybdenum from liquid mixtures containing it, in a quantity greater than (200) mg/l, together with vanadium characterized in that it comprises the following steps:...
|
|
|
7247282 |
Method for the removal of metals from an aqueous solution using lime precipitation
The invention relates to a method for the removal of metals from their aqueous solution with lime precipitation, in conditions where a precipitate of metal hydroxide and gypsum is formed, which...
|
|
|
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...
|
|
|
7169371 |
Process for the treatment of molybdenum concentrate
A method of treatment or purification of a molybdenum concentrate also containing copper, comprises the step of subjecting the molybdenum concentrate to pressure oxidation in the presence of oxygen...
|
|
|
7160526 |
Process for detoxification of CCA-treated wood
A chemical process for detoxifying spent CCA (copper, chrome, arsenic)—treated wood, from which CCA and detoxified wood are recovered for recycling comprising the steps of (a) treating C...
|
|
|
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)/3CrxTi(2/3)yMn2(1-x-y)/3]O2 where...
|
|
|
7132093 |
Mesoporous mixed oxide materials as a new class of SO2 resistant catalysts for hydrocarbon oxidation
The oxide materials are of the class of ternary mesoporous mixed oxide materials including lanthanum, a metal M selected from the group consisting of Cr, Mn, Fe, Co, Ni, Cu and Zn, and zirconium or...
|
|
|
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-Fe2O3) nanoparticles usable as a superhigh density magnetic recording substance by having good shape ...
|
|
|
6833123 |
Method for liquid chromate ion and oxy-metal ions removal and stabilization
A method for removing at least one of chromate and other oxy-metal ions from liquid solutions includes contacting the liquid solution with solid barium compounds as adsorbents so that the at least...
|
|
|
6833124 |
Recovery process for wastes containing hexavalent chromium
A process for recovery of hexavalent chromium from waste streams. The method includes providing a waste stream containing hexavalent chromium, reacting a soluble non-toxic precipitating reagent...
|
|
|
6800260 |
Processes for treating iron-containing waste streams
Processes for treating iron containing waste streams are provided. According to these processes, metal-containing compounds, particularly iron oxides are produced. These methods may, for example,...
|
|
|
6653066 |
Device and method for detecting polyvalent substances
Disclosed is a device and method of use for detecting polyvalent analytes such as antibody to the AIDS virus, utilizing an inverse sandwich method. The test device comprises a first substance...
|
|
|
6645458 |
Method for making an aqueous sodium chloride solution
Process for the manufacture of an aqueous sodium chloride solution, according to which a solid material comprising sodium chloride and heavy metals is dispersed in water, the aqueous medium thus...
|
|
|
6485629 |
Process for separation of heavy metals from residues by use of ethylene-diamine-disuccinic acid (edds) complexant
A process for separating a first source of a heavy metal ion or mixtures of heavy metal ions, (Me1), from a solution comprising a complex of said Me1 and EDDS, (Me1-EDDS), by displacement of said...
|
|
|
6328938 |
Manufacture of titanium dioxide with recycle of waste metal chloride stream
A method for the integration of a manufacturing facility with a salt dome, which manufacturing facility is one for the production of high purity titanium dioxide using chlorine as a reactant. The...
|
|
|
6149883 |
Pressure oxidation process for the production of molybdenum trioxide from molybdenite
Molybdenum trioxide is produced from molybdenite by a pressure oxidation process comprising of the steps of forming an aqueous slurry of molybdenite, pressure oxidizing the slurry to form soluble...
|
|
|
RE36915 |
Process for sodium sulfide/ferrous sulfate treatment of hexavalent chromium and other heavy metals
A process for treating industrial waste water containing hexavalent chromium (Cr+6) and other heavy metals is disclosed which comprises reduction of Cr+6 to trivalent chromium (Cr+3) and the...
|
|
|
6113868 |
Process for treating tungstate solutions to reduce molybdenum impurity and other impurity content
|
|
|
5980749 |
Inclusion methods for purifying a solvent
Disclosed are methods for purifying solvents, by causing contaminants to be included within layers of dispersed layered materials, and then separating the restacked combined contaminant/layered...
|
|
|
5961879 |
Process for the manufacture of hypochlorite bleaching compositions
The present invention discloses a process for the manufacture of liquid aqueous bleaching compositions comprising hypochlorite, a strong source of alkalinity and water, said process comprising the...
|
|
|
5928559 |
Process for the manufacture of hypochlorite bleaching compositions
The present invention discloses a process for the manufacture of liquid aqueous bleaching compositions comprising alkali metal hypochlorite, a strong source of alkalinity and water; said process...
|
|
|
5820844 |
Method for the production of a purified MoO3 composition
A method for producing purified MoO3 from MoS2. MoS2 is initially oxidized to generate an impure MoO3 product containing metallic contaminants and molybdenum sub-oxides. This product is then...
|
|
|
5804151 |
Process for autoclaving molybdenum disulfide
A method for producing MoO3 from MoS2. MoS2 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...
|
|
|
5676817 |
Process for the production of pure solutions of tungsten and molybdenum
Process for the production of pure tungsten and/or molybdenum solutions from sources, such as alkaline decomposition solutions, which are contaminated with tantalum, niobium, titanium, aluminium,...
|
|
|
5599514 |
Process for recovering cobalt and tungsten from reaction liquors
Process for recovering and re-using cobalt and tungsten from reaction liquors, in which said reaction liquors are treated: a) With an alkali-earth metal hydroxide in order to precipitate cobalt and...
|
|
|
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...
|
|
|
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...
|
|
|
5427692 |
Removal of chromium from solution using ferrous sulfate and barium nitrate
Hexavalent chromium is removed from aqueous sodium nitrate solutions by reacting hexavalent chromium with an aqueous slurry consisting essentially of ferrous hydroxide and barium sulfate whereby...
|
|
|
5417945 |
Process for recovering tungsten as an ammoniacal tungstate compound in which ammoniacal tungstate liquors are reclaimed
A process for recovering tungsten as an ammoniacal tungstate which comprises reacting a tungsten containing material with sodium hydroxide to produce sodium tungstate and forming a first aqueous...
|
|
|
5415848 |
Method for removal of hexavalent chromium from a solution
A process for removing chromium from an aqueous electrolyte solution is disclosed. The process involves admixing with the solution an amount of a chromium-reducing compound and an amount of a...
|
|
|
5407650 |
Process for purifying a technical iron chloride solution by selective precipitation
A process for purifying an acidic technical-grade iron chloride solution formed from cyclone dust from the production of TiO2 in accordance with the chloride process by adjusting the pH with a...
|
|
|
5401833 |
Method and apparatus for treating chrome leather waste
An improved method and apparatus for treating chromium containing leather scrap to recover chromium compounds and to produce a protein hydrolysate. The leather scrap is fed into an upstream mixing...
|
|
|
5397478 |
Fixation and stabilization of chromium in contaminated materials
A highly flexible multi-step treatment technology for chemical fixation and stabilization of leachable chromium, particularly hexavalent chrome, in contaminated soils, solid wastes, concrete,...
|