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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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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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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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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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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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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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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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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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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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6170669 |
Separation of minerals
A process for floating fine particles containing metal values of an iron-bearing sulphide mineral ore including the steps of conditioning the aqueous pulp of ore at a pH of between about 7 and...
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6138835 |
Recovery of petalite from ores containing feldspar minerals
A method for recovering petalite from a mixture comprising petalite and feldspar minerals comprises the steps of forming an aqueous slurry of the mixture and adding to the slurry a depressant...
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6098810 |
Flotation process for separating silica from feldspar to form a feed material for making glass
A separation process is provided for treating a feed material comprising silica, feldspar, and metal impurities, including at least one of mica, iron impurities, or refractory heavy minerals, to...
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6092666 |
Reduction of pH modifying agent in the flotation of copper minerals
A method is provided for reducing the consumption of alkaline pH modifier in a mineral separation circuit which employs sulfoxy radical-containing reagents. The method comprises the addition of a...
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6076682 |
Process for froth flotation of silicate-containing iron ore
The present invention relates to a process for enriching an iron mineral from a silicate-containing iron ore by carrying out, at a pH of 8-11, a froth flotation in the presence of a depressing...
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6044978 |
Process for recovery of copper, nickel and platinum group metal bearing minerals
The present invention provides a process for the recovery of base metal sulfides including chalcocite, chalcopyrite, pentlandite and platinum group metal bearing mineral ores. The process involves...
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6041941 |
Reagent consumption in mineral separation circuits
A method for reducing both reagent consumption and scale formation in a mineral separation circuit employing sulfoxy compounds as reagents. The method involves introducing into the mineral...
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6036025 |
Mineral flotation separation by deoxygenating slurries and mineral surfaces
A process for the separation of minerals of different mineralogical character. The process involves conditioning a milled slurry or a slurry of a flotation concentrate which contains a mixture of...
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6032805 |
Enhanced effectiveness of sulfoxy compounds in flotation circuits
A method of increasing both flotation selectivity and effectiveness of a sulfoxy radical-containing reagent added to a mineral separation circuit. The method involves adding a non-oxidizing gas to...
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5992640 |
Precious metals recovery from ores
A process for recovery of a precious metals containing mineral from a non-sulphidic gangue mineral comprising: preparing a pulp of a material containing the precious metals containing and gangue...
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5925862 |
Process for the recovery of cobalt from ores containing metal sulfides
A process for the production of cobalt concentrate from an ore containing metal sulfides including sulfides of lead, zinc, and cobalt. The ore is crushed and subjected to a lead and cobalt...
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5879542 |
Flotation process
Disclosed is a process for the flotation of a mineral concentrate comprising the steps of forming an aqueous slurry of a milled mineral ore containing particles of a desired mineral species and...
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5855771 |
Pyrite depressant useful in floation separation
The present invention relates to a process for separating pyrite from sulfide ores and coal during flotation separation which comprises the depressing of pyrite with from about 0.05 to 0.75...
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5855770 |
Base metal mineral flotation processes
A process for recovering a secondary base metal mineral from a material containing it involving treatment of a pulp of the material with surface modifying reagent such as a water soluble sulphide....
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5853571 |
Pyrite depressant useful in flotation separation
The present invention relates to a process for separating pyrite from sulfide ores and coal during flotation separation which comprises the depressing of pyrite with from about 0.05 to 0.75...
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5846407 |
Pyrite depressant useful in flotation separation
The present invention relates to a process for separating pyrite from sulfide ores and coal during flotation separation which comprises the depression of pyrite with from about 0.125 to 1.250...
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5837210 |
Method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate
Provided is a method for processing a gold-bearing sulfide ore which involves maintaining the ore in a substantially oxygen free environment, preferably beginning with comminution of the ore and...
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5795466 |
Process for improved separation of sulphide minerals or middlings associated with pyrrhotite
A multi-stage froth flotation process is provided for concentrating sulphide minerals or middlings containing non-ferrous metal values such as nickel, cobalt and copper, which co-exist with...
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5753104 |
Physical separation processes for mineral slurries
A flotation process for the separation of a mineral of non-sulphidic character, such as a talcose mineral, from a mineral of sulphidic character, for example a base metal sulphide, characterized in...
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5720873 |
Method of floating calcium carbonate ore and flotation reagent therefor
The invention relates to a method of floating calcium carbonate ore containing silicates as impurities. Floatation is performed in the presence of a quaternary ammonium compound and an alkylene...
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5702591 |
Flotation method for non-ferrous metal variable ores
The present invention concerns a method of separating variable ores containing copper, lead, zinc and the like as the refining material for non-ferrous metals and gangue minerals such as pyrite,...
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5700369 |
Process for adsorboaggregational flotation of Carlin type natural gold ore dressing
A novel process for adsorptive aggregation and also floatation of Carling type gold ores, which goes far beyond the conventional floatation method. Said novel technological procedures comprise fine...
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5566832 |
Method for sorting plastics from a particle mixture composed of different plastics
A method for separating plastic particles by types from a particle mixture of plastics of different types by flotation. The plastic particles are initially processed by a type-dependent change in...
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5545351 |
Use of stearic acid esters of polypropylene glycol to control foam
Stearic acid monoesters and diesters of polypropylene glycol (PPG), together with a hydrocarbon diluent, give exceptional defoaming performance in mineral processing streams over defoaming...
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5533626 |
Method of depressing non-sulfide silicate gangue minerals
A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is a polymeric mixture of a polysaccharide and a material comprising recurring units of the...
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5525212 |
Method of depressing non-sulfide silicate gangue minerals
A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is a mixture of a polysaccharide and a graft polymer of polyvinyl alcohol and an acrylamide.
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5507395 |
Method of depressing non-sulfide silicate gangue minerals
A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is a graft polymer of polyvinyl alcohol and an acrylamide.
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5439116 |
Process for the recovery of micas by flotation and micas thus obtained
The invention relates to a process for the recovery of micas by flotation starting with slurried ore from which the fines have been optionally removed, comprising a stage of bringing the said...
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5439115 |
Process for selective flotation of copper-lead-zinc sulfide
In a process for a selective flotation of a copper-lead-zinc sulfide ore the raw ore is ground and slurried with water and the resulting suspension is aerated with air to adjust a certain...
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5411148 |
Selective flotation process for separation of sulphide minerals
This invention provides a process for improved separation of mono/multi-metallic sulphide minerals from significant amounts of iron sulphides, mainly pyrrhotite and/or their finely divided process...
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5407080 |
Apatite flotation reagent
This invention relates to apatite flotation reagents which can be used simultaneously with silica collectors in a coflotation process without problems of incompatibility between the apatite...
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5402894 |
Coal conditioning process
A process for improving the efficiency of coal dewatering and deashing uses complexing agents such as sodium gluconate in alkaline solution to form soluble compounds with cations such as Al +3 , Fe...
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5402893 |
Method for processing waste material in the form of filter rods, filter cigarettes and the like
A method is described for processing waste materials in the form of filter rods, filter cigarettes and the like comprising filter material with inner hollow volumes accessible from the outside and...
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5377844 |
Separation of normally hydrophobic plastic materials by froth flotation
A targeted particulate, synthetic organic plastic material having normally hydrophobic surface characteristics is separated from a mixture of two or more of such plastic materials by conditioning...
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5314073 |
Phosphate flotation using sulfo-polyesters
This invention relates to a process for beneficiating a silicious phosphate ore by flotation, the process comprising the steps of conditioning an aqueous slurry of phosphate ore at a pH of from 7.5...
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5307938 |
Treatment of iron ore to increase recovery through the use of low molecular weight polyacrylate dispersants
The described invention relates to the processing of iron ore, particularly taconite ore. In particular, the invention relates to the separation of the iron containing component from the silicious...
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