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7618517 |
Method and apparatus for monitoring liquid and solid contents in a froth
A method and apparatus are presented for determining the quantity of liquid and solid content in a removal stream of a froth created from a suspension that is generated during a froth flotation...
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7585407 |
Processing asphaltene-containing tailings
Embodiments of a method and a system for recovering energy, materials or both from asphaltene-containing tailings are disclosed. The asphaltene-containing tailings can be generated, for example,...
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7576244 |
Compounds and compositions for use as foaming or frothing agents in ore and coal flotation
Compounds of formula (I) wherein R 1 and R 2 are each independently C 1 -C 2 alkyl, and m is 1, 2, 3, 4, or 5 and compositions of formula (II) wherein R 1 and R 2 are each independently C 1 -C...
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7516849 |
Froth flotation process with pH modification
This invention relates to the pH modifier in alkaline froth flotation processes to treat oxide and semi-soluble salt ores, such as phosphates, sulfates, carbonates and halides, to increase the...
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7482495 |
Process for making alkylene glycol ether compositions useful for metal recovery
A process for making an alkylene glycol ether composition is disclosed. In one aspect, the process comprises reacting propylene glycol methyl ether (PM) with from 1.5 to 3 equivalents of propylene...
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7461745 |
Flotation of sulfide mineral species with oils
This invention is directed to the use of non-sulfur containing compounds as collectors in the froth flotation of certain mineral sulfide and metallic compounds. These non-sulfur-containing...
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7393462 |
Process and reagent for separating finely divided titaniferrous impurities from Kaolin
A mineral beneficiating reagent containing an alkyl hydroxamic acid or salt thereof and a nonionic surfactant. The alkyl hydroxamic acid or a salt thereof is represented by the formula:
...
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7389881 |
Flotation
A method of recovering a valuable component from a feed slurry in minerals processing plant for a mined material is disclosed. The method includes separating the feed slurry on the basis of...
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7381305 |
Method and apparatus for monitoring liquid and solid contents in a froth
A method and apparatus are presented for determining the quantity of liquid and solid content in a removal stream of a froth created from a suspension that is generated during a froth flotation...
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7360656 |
Method to improve the cleaner froth flotation process
The present invention provides a method to improve the cleaner froth flotation process for the selective separation of ore values including, for example, copper, zinc, molybdenum, iron and mixtures...
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7314139 |
Process for sulphide concentration
The present invention relates to a gravity/flotation circuit where a mineral stream, such as a flotation rougher or cleaner concentrate, undergoes a two stage size separation wherein:
i) the...
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7311206 |
Quaternary ammonium compounds for froth flotation of silicates from an iron ore
The present invention relates to a froth flotation process in which silicates are separated from an iron ore in the presence of a collector containing a quaternary ammonium compound having the...
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7299930 |
Collecting agent comprising ammoniated compounds (primary, secondary, tertiary amines), for use in the process of grinding and/or floating copper, molybdenum, zinc, and other contained mineral ores
The present invention provides a ammoniated collector (amine, azepine, etc.) alone or in combination with other thiol-type collecting reactants, as well as sodium, iron, magnesium, and/or manganese...
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7275643 |
Environmentally safe promoter for use in flotation separation of carbonates from minerals
An environmentally safe composition of matter for use as a promoter chemical in flotation separation of carbonates from industrial sand is disclosed. The promoter chemical replaces the standard...
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7219804 |
Flotation processing including recovery of soluble nonferrous base metal values
A method of flotation processing ores and other mineral materials containing soluble nonferrous base metal and sulfide minerals involves dissolving the soluble nonferrous base metal and...
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7172074 |
Concentration/calcination process of zinc silicated minerals and concentrate zinc silicate based product
A concentration process of zinc silicated minerals, particularly willemite and calamine concentration, by single operations, or conventional steps of ore treatment, some of which include the...
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7165680 |
Selective flotation agent and flotation method
A new reagent for the application in the preparation of mineral raw materials, mainly sulphide and oxyde mono- and polymetallic ores of non-ferrous metals, which are used as a corrosion inhibitor...
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7152741 |
Use of ozone to increase the flotation efficiency of sulfide minerals
The use of ozone during certain stages of metal separation by flotation degrades certain collectors that are absorbed on the particle surface, as well as the collectors and frothers in the liquid...
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7150357 |
Selective recovery of minerals by flotation
A method of recovering a target mineral from an ore containing the target mineral and an iron sulphide mineral comprising the steps of: a) grinding the ore to liberate target mineral from the iron...
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7104404 |
Collecting agent for sulphidic ores, the production and use thereof
A method for the flotation of sulfide ores is disclosed. The method comprises contacting the sulfide ores with a composition comprising at least one compound of the formula
where
R 1 , R 2 ...
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7051881 |
Collector for non iron metal sulphide preparation
The present invention relates to a flotation reagent and a process for the flotation of sulfidic ores. The process comprises contacting the sulfidic ores with a combination of thionocarbamates and...
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7028845 |
PH adjustment in the flotation of sulphide minerals
The present invention relates generally to a process for flotation of sulphide minerals where a flotation pulp is separated into a coarse stream and a fine stream, preferably containing particles...
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7014048 |
Composition formed of mercaptans which can be used in a process for the flotation of ores
Composition intended for the flotation of ores, comprising:
from 70 to 95% of a combination (A) of n-dodecyl mercaptan (or NDM) and of tert-dodecyl mercaptan (or TDM), the NDM/TDM ratio by...
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7011216 |
Process for the beneficiation of sulfide minerals
Froth flotation processes, useful for beneficiating base metal mineral values from metal sulfide ore, utilize a collector comprising an N-butoxycarbonyl-O-alkylthionocarbamate selected from the...
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7007805 |
Hydroxamate composition and method for froth flotation
The invention relates to a hydroxamate composition for collection of minerals by froth flotation, the composition including an aqueous mixture of hydroxamate wherein the pH of the composition is at...
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7004326 |
Arsenide depression in flotation of multi-sulfide minerals
A mineral separation process includes wet-grinding the ore to liberation of minerals, oxidizing the slurry using air, hydrogen peroxide or other oxidants and floating the valuable minerals at a pH...
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6988623 |
Beneficiation of sulfide minerals
Froth flotation processes, useful for beneficiating base metal mineral values from metal sulfide ore, utilize a collector comprising N-butoxycarbonyl-O-butylthionocarbamate.
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6959815 |
Selective reactive oily bubble carriers in flotation processes and methods of generation and uses thereof
The present invention provides for a reactive oily bubble carrier comprising: (a) a gas bubble having an oil-coating; and (b) a collector dissolved within the oil-coating. The present invention...
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6945407 |
Flotation of sulphide minerals
The present invention relates generally to a process and an apparatus for flotation of sulphide minerals, such as sulphide minerals hosted in ores rich in magnesium minerals. The process involves...
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6915908 |
Method of decontaminating soil
A method for decontaminating soil containing inorganic contaminants having a degree of liberation of at least 60%, comprising the steps of removing from a coarse fraction at least a portion of...
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6889844 |
Collectorless flotation
The present invention relates to a process for improving the recovery of valuable sulphide minerals. The process involves determining an Eh range within which the valuable sulphide mineral may be...
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6874640 |
Process for separation of bastnaesite from weathered bastnaesite barite fluorite ores
The present invention provides a process for the recovery of bastnaesite and other minerals containing rate earth oxide from complex, weathered ores containing barite, borite, fluorites and/or...
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6871743 |
Methods of increasing flotation rate
Methods of increasing the rate of separating hydrophobic and hydrophilic particles by flotation have been developed. They are based on using appropriate reagents to enhance the hydrophobicity of...
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6799682 |
Method of increasing flotation rate
Methods of increasing the rate of separating hydrophobic and hydrophilic particles by flotation have been developed. They are based on using appropriate reagents to enhance the hydrophobicity of...
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6778881 |
Monitoring and control of a froth flotation plant
The invention uses machine-vision to improve the performance of a flotation operation to provide a substitute for conventional human vision and problem-solving abilities. The invention redirects...
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6739454 |
Mineral collector compositions and processes for making and using same
Collector compositions of a mixture of a C 6 to C 22 fatty hydroxamic acid and an oil for use in a method the removal of impurities from mineral ores by the froth flotation method. The collectors...
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6712217 |
Agent for dressing phosphate ore
The invention relates to a flotation agent for phosphate ore, comprising a fatty acid as collector and alkoxylated alkylphenols as dispersing agents, characterized in that the alkylphenols are...
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6685027 |
Method of concentrating phosphates from their ores
The present invention relates to a phosphate ore beneficiation process, which includes a method to float inadequately de-oiled phosphate particles prior to silica flotation. It is emphasized that...
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6679383 |
Flotation of platinum group metal ore materials
Provided is a method involving flotation of a feed of platinum group metal ore material to prepare a platinum group metal concentrate during mineral processing operations. Prior to and/or during...
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6568537 |
Composition for the flotation of useful minerals products
There is proposed a composition for the flotation of useful minerals, comprising a frother based on dimethyl(isopropenylethynyl)carbinol and a collector, the frother, for improving the...
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6536595 |
Mineral ore flotation aid
In accordance with the present invention, there is provided a method of improving the separation of mineral values from their associated gangue. The method itself involves the addition of an...
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6533848 |
Technology and methodology for the production of high quality polymer filler and super-pozzolan from fly ash
A novel method for producing fly ash material with a range of particle sizes from about 2.0 to about 4.0 μm is provided utilizing superplasticizers. The method produces fly ash material suitable...
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6484883 |
Use of cupric chloride in zinc flotation
A process for activating a zinc-containing ore for flotation in aqueous media, wherein an ammonium-free aqueous cupric chloride solution is added to the media.
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6427843 |
Flotation separation of valuable minerals
A process for separating minerals of different mineralogical character. A milled slurry or flotation concentrate is subjected to a first conditioning step ( 20 ) followed by a first flotation step...
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6425485 |
Air-assisted density separator device and method
A process is described for separating particles based on differences in mass after the selective attachment of air bubbles to reduce the density of one or more of the components of the feed. A...
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6390303 |
Method for optimizing flotation recovery
A method for optimising a mineral recovery process. A slurry 10 is fed to a conditioning step 20 . The condition slurry 30 is then provided to a flotation circuit 40 to recover a concentrate...
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6378703 |
Flotation method for removing colored impurities from kaolin clay
An improved method for purifying titania contaminated kaolin clay by froth flotation which features the use an hydroxamate flotation collector at a neutral or mildly alkaline pH wherein a slurry of...
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6375841 |
System for transporting and separating wet chips and delivering dried chips
A system for transporting wet chips to a centrifugal separator where the wet chips are separated into dry chips and fluid with the dry chips being transported to a dry chips site and the fluid...
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6341697 |
Selective flotation of phosphate minerals with hydroxamate collectors
A method is disclosed for separating phosphate minerals from a mineral mixture, particularly from high-dolomite containing phosphate ores. The method involves conditioning the mineral mixture by...
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6234318 |
Flotation and cyanidation process control
A method for controlling a froth flotation system in a mineral processing operation for recovering metal from a metal source. A rule-based expert system adjusts performance of the froth flotation...
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