|
Match
|
Document |
Document Title |
|
|
7556095 |
Solution mining dawsonite from hydrocarbon containing formations with a chelating agent
A method for treating an oil shale formation comprising dawsonite includes providing heat from one or more heaters to the formation to heat the formation. Hydrocarbon fluids are produced from the...
|
|
|
7553474 |
Method for producing metal oxide sol
It is an object to provide a method for producing stable alkaline metal oxide sols having a uniform particle size distribution. The method comprises the steps of: heating a metal compound at a...
|
|
|
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,...
|
|
|
7100994 |
Producing hydrocarbons and non-hydrocarbon containing materials when treating a hydrocarbon containing formation
A method for treating a hydrocarbon containing formation is provided. In one embodiment, heat from one or more heaters may be provided to at least a portion of the formation. Heat may be allowed to...
|
|
|
7090809 |
Production of aluminum compounds and silica from ores
A method for the production of inorganic aluminum substances and amorphous silica from aluminum oxide containing ores, comprising: (a) leaching of said ores with fluorosilicic acid to obtain...
|
|
|
6997518 |
In situ thermal processing and solution mining of an oil shale formation
An oil shale formation may be treated using an in situ thermal process. Heat may be provided to the treatment area. Fluids may be injected into the formation to remove a component within the...
|
|
|
6596252 |
Recycling of spent pot linings
A process is described for the treatment of spent pot lining material from electrolyte reduction cells, this spent material having a substantial content of cryolite. The spent material is first...
|
|
|
6296817 |
Process for recycling waste aluminum dross
Disclosed is the recycling of aluminum dross. Aluminum dross is crushed into particles which are size-classified on the basis of 1 mm. The aluminum dross particles equal to or smaller than 1 mm in...
|
|
|
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...
|
|
|
5951955 |
Concentration of solids in the Bayer process
Processes for improving solids/liquids separation efficiency in the Bayer process are disclosed, wherein solids are flocculated with hydroxamated polymers and centrifuged.
|
|
|
5939035 |
Process for treating spent potlining containing inorganic matter
The present invention relates to a process for reducing and/or removing inorganic matter from a material containing inorganic matter which comprises the steps of: (i) (a) treating the material...
|
|
|
5904856 |
Process for the preparation of aluminum salt solutions
The present invention relates to a process for the preparation of solutions of aluminum salts, characterized in that an aluminate of an alkali metal and/or alkaline earth metal is dissolved in an...
|
|
|
5792236 |
Non-toxic liquid metal composition for use as a mercury substitute
Liquid gallium or gallium alloy is utilized as a mercury substitute for a variety of applications. The liquid gallium or gallium alloy is either free of metal oxides or has only very low quantities...
|
|
|
5776426 |
Treatment of solid material containing fluoride and sodium including mixing with caustic liquor and lime
A process for treatment of a solid material containing fluoride and sodium, such as spent potlining from aluminum reduction cells, comprising the following steps: 1) contacting the solid material...
|
|
|
5665244 |
Reduction of impurities in bayer process alumina trihydrate
Processes for reducing the level of impurities in alumina trihydrate produced in the Bayer process are disclosed, wherein alumina trihydrate-containing process streams are flocculated with...
|
|
|
5653946 |
Process for fluidifying aqueous suspensions of red muds in the production of alumina by the bayer process
Improved process for fluidifying flocculated aqueous suspensions of red muds in the production of alumina from bauxite by the Bayer process, which consists: in dissolving bauxite using sodium...
|
|
|
5558847 |
Process for recovering aluminium and fluorine from fluorine containing waste materials
Aluminum and fluorine are recovered from fluorine containing waste materials from the production of aluminum metal (FCWM) as ALF 2 OH hydrate by a process comprising: leaching FCWM with dilute...
|
|
|
5470559 |
Recycling of spent pot linings
A process for recycling spent potlining material from aluminum reduction cells contaminated with fluoride and aluminum values. The process comprises first reducing the average particle size of the...
|
|
|
5385586 |
Liquor oxalate stabilizers
A method for inhibiting the precipitation of sodium oxalate crystals in a Bayer process liquor. The method comprises the step of adding to the Bayer process liquor, after red mud separation and...
|
|
|
5364603 |
Mercury-free dissolution of aluminum-clad fuel in nitric acid
A mercury-free dissolution process for aluminum involves placing the aluminum in a dissolver vessel in contact with nitric acid-fluoboric acid mixture at an elevated temperature. By maintaining a...
|
|
|
5331106 |
Resource recovery system
Waste energetic compositions such as solid rocket propellant are treated to reclaim valuable aluminum particles and oxidizer in a form in which they can be reused, and to incinerate the remaining...
|
|
|
5330618 |
Process for separating dissolved solids from a liquid using an anti-solvent and multiple effect evaporators
A process and system for treating aluminum salt cake containing water soluble halide salts by contacting the salt cake with water to dissolve water soluble halide salts forming a saturated brine...
|
|
|
5308595 |
Process for the extraction of gallium
Gallium is efficiently extracted from strongly basic solutions containing aluminates by extractants having the tris- and/or tetrakis(2-hydroxybenzyl)-1,2-diaminoethane chemical moiety. The...
|
|
|
5290535 |
Process for recycling saltcake
Saltcake generated by the aluminum industry is completely recycled through a process that simultaneously liberates the contained aluminum metal and dissolves the soluble salt fluxes to recover...
|
|
|
5282938 |
Process for recovery of trace metals and salts from waste combustion residues
A method for the continuous treatment of air pollution control residues from various resource recovery systems whereby the air pollution control residue is treated with a dilute salt extracting...
|
|
|
5245116 |
Process for the wet treatment of spent pot linings from hall-heroult electrolytic cells
A process for the treatment of spent pot linings impregnated with alkali metal cyanide and fluoric products by grinding previously crushed pot linings in the presence of lime, suspending the ground...
|
|
|
5242670 |
Method for hydrofluoric acid digestion of silica/alumina matrix material for the production of silicon tetrafluoride, aluminum fluoride and other residual metal fluorides and oxides
A process for hydrofluoric acid digestion of inorganic silica/alumina matrix material for the production of silicon tetrafluoride and aluminum fluoride comprises the initial step of reacting the...
|
|
|
5227143 |
Process for the removal of salts from aluminum dross
A process is disclosed for treating salt-containing aluminum dross to remove potassium and sodium chloride salts therefrom. The process generally comprises treating the dross in a first treating...
|
|
|
5211922 |
Process for the recovery of values from secondary aluminum dross
A process for recovery of metallic aluminum, sodium and potassium chloride and an aluminum oxide-metallic aluminum product from secondary aluminum dross. A secondary aluminum dross feed is...
|
|
|
5204074 |
Recovery of gallium values from basic aqueous solutions thereof
Gallium values are recovered from basic aqueous solutions thereof, e.g., Bayer liquors, by (i) contacting such basic aqueous solution (A) with a medium (I) containing a gallium extractant, whereby...
|
|
|
5167831 |
Non-ionic surfactants plus fatty-acids as dewatering aids for alumina trihydrate
Tall oily fatty acids when combined with certain non-ionic surfactants having an HLB number from 10-14 are superior dewatering agents for Bayer Process alumina trihydrate filter cakes.
|
|
|
5143599 |
Process for refining kaolin
A process is disclosed for producing high brightness kaolin from ore containing silica, other types of clays, minerals such as ilmenite micas, feldspars and various metal silicates as well as...
|
|
|
5118484 |
Desilication of Bayer process solutions
A process is described for removing dissolved silica from process solutions or slurries formed in the Bayer process for producing alumina from bauxite. In the novel process, a Bayer process...
|
|
|
5096678 |
Method and apparatus for beneficiating ores
A method and apparatus for treating mineral-bearing ores and, more particularly, for treating ores containing precious metals, base metals and the like values by providing a means to extract the...
|
|
|
5091160 |
Use of microwave radiation to eliminate foam in ore leaching
A method of eliminating the foam above a slurry of a corrosive liquid and solid matter where the foam is caused by a gas evolved by the reaction between the heated corrosive liquid and the solid...
|
|
|
5080721 |
Process for cleaning particulate solids
A system for cleaning solids contaminated with solvent-soluble contaminants. The system, which includes both process and apparatus, comprises the use of at least two successive cleaning zones, each...
|
|
|
5063033 |
Process for the production of boehmite
The present invention provides a process for the production of crystalline boehmite of fine particle size and enhanced specific surface area. Coarse gibbsite particles, obtained from the Bayer...
|
|
|
5051243 |
Process for increasing the specific gravity of red mud solids
This invention provides an improved process for increasing the specific gravity of red mud. The process comprises mixing red mud in an acidic solution, such as sulfur dioxide solution, having a pH...
|
|
|
5030426 |
Biomining of gallium and germanium containing ores
Disclosed is a high temperature process (e.g.>60° C.) for leaching selected metal compounds e.g. gallium or germanium from ore containing those compounds. The method includes placing the ore...
|
|
|
5030425 |
Biodegradation and recovery of gallium and other metals from integrated circuits
Disclosed is a process for leaching selected metal compounds (e.g. gallium arsenide) from integrated circuits containing those compounds. The method includes placing the integrated circuits into a...
|
|
|
5019360 |
Method for the processing of fly ash, scrubber sludge and the like; and product
A method for the processing of fly ash scrubber sludge or the like is provided. The method yields unique products, including a usable calcium silicate material and a high purity alumina material....
|
|
|
4994253 |
Process for the production of large boehmite particles
A process for the production of large boehmite crystal aggregates, useful for soft polishing applications is provided herein. A caustic aluminate liquor is contacted with an oxygen-containing gas...
|
|
|
4942023 |
Metal extraction process with substituted 8-hydroxyquinoline
A process using an extractant, that consists on the one hand of an active component being substituted 8-hydroxyquinoline and on the other hand of by-products of the manufacture of said extractant,...
|
|
|
4937210 |
Production of porous inorganic materials
There is disclosed a process for preparing a porous inorganic material. The process comprises preparing a cellular aluminosilicate material by foaming or spray drying an aqueous suspension of the...
|
|
|
4915730 |
Process and apparatus for recovery of flue dust
A process and apparatus for the recovery of metals such as silver from phosphate flue dust. The process includes the steps of blending chloride salt and the flue dust to produce a blended material,...
|
|
|
4865824 |
Process for recovering gallium from basic aqueous sodium aluminate solutions by means of liquid-liquid extraction
A process is described for recovering gallium from a basic aqueous sodium aluminate solution by means of liquid-liquid extraction, in which process the aqueous sodium aluminate solution to be...
|
|
|
4865823 |
Method for recovering gallium
A method for recovering gallium, which comprises a capturing step of contacting an aqueous solution containing gallium to a chelating agent containing a water-insoluble substituted quinolinol as...
|
|
|
4861371 |
Nickel-containing leachate having low aluminum content
A nickel-containing ore is leached with sulfuric acid to dissolve nickel and associated metallic values into the sulfuric acid to form a leachate, the sulfuric acid further containing a source of...
|
|
|
4855114 |
Dioxime kinetic enhancer for solvent extraction of gallium from basic aqueous solutions thereof
Disclosed is a process for recovering gallium values contained in a basic aqueous solution by liquid/liquid extraction thereof. The liquid/liquid extraction process comprises contacting the basic...
|
|
|
4826790 |
Production of porous mullite bodies
A particulate porous material suitable for use as a high surface area column packing material comprises particles substantially all of which are not smaller than 5 micrometers and not larger than 1...
|