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WO/2014/097273A1 |
The invention provides method to recover, by means of froth flotation, a desired metal value from a feedstock containing it. In a comminution step, the feedstock is comminuted using comminuting media of an iron and chrome steel alloy com...
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WO/2014/099459A1 |
A process for the extraction and recovery of bitumen from oil sands using deionized silicate solutions. Bitumen is recovered in a process comprising contacting a deionized silicate solution with an ore sand oil to produce a froth compris...
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WO/2014/095980A1 |
The invention relates to a method for separating a suspension containing gypsum granules and calcium carbonate granules and an aqueous solution, characterized in that the aqueous solution comprises at least one sodium salt and in that th...
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WO/2014/089443A1 |
Systems, methods, and apparatus for removing materials from liquid, such as water. The system, methods, and apparatus allow for separation of neutrally buoyant materials from liquid via flotation to or near the surface of the liquid via ...
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WO/2014/085274A1 |
The invention provides methods and compositions for improving a froth flotation type separation. The method uses a thickener to improve the effectiveness of an emulsifier. The improvement allows for low dosages of emulsifier to work well...
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WO/2014/083197A1 |
The present invention relates to a method for the flotation of silicates from ores in the presence of a collecting agent and an effective amount of a froth modifier/collecting booster comprising at least one of the compounds of general f...
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WO/2014/080079A1 |
The invention relates to a water purification method and apparatus utilizing flotation filtration. Especially, the invention relates to a water purification method based on dissolved air flotation combined with filtration. The invention ...
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WO/2014/071952A1 |
A flotation machine includes a stator positioned in a tank adjacent a rotor. The stator has a plurality of vanes. Each of the vanes is spaced apart from the other vanes to which that vane is adjacent. The vanes are positioned in series a...
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WO/2014/071951A1 |
A flotation machine includes a stator positioned in a tank adjacent a rotor. The stator has a plurality of vanes. Each of the vanes has a plurality of slots formed therein. Each of the slots has a shape that is elongated in a direction a...
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WO/2014/060740A1 |
Uses of a method of producing small bubbles of gas in a liquid include gas transfer in airlift bioreactors and anaerobic digesters, and particle separation. The method uses a source of the gas under pressure, a conduit opening into a liq...
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WO/2014/056065A1 |
One method of treating incinerated waste comprises: size separating at least some of the incinerated waste into a first undersize fraction comprising particles smaller than the first separation size and into a first oversize fraction com...
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WO/2014/055502A1 |
Depressants comprising one or more types of polysaccharides comprising one or more types of pentosan units are provided. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral and gangue, ...
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WO/2014/046979A1 |
A method for enhancing filtration performance in separating solids from liquids in an aqueous dispersion comprising a solids phase and a liquid phase in a two step process having a physical separation step and a filtration step comprisin...
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WO/2014/040686A1 |
The invention relates to a flotation agent for phosphate ore, comprising at one fatty acid and at least one sarcosinate of the formula (I) wherein R is a C7 to C21 alkyl or alkenyl group, which sarcosinate may be present in the form of a...
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WO/2014/036621A1 |
The patent application describes a depressor in iron ore flotation that comprises sugar cane bagasse treated with caustic soda so as to assist in the iron ore flotation and a process of preparing that depressor. The invention refers to t...
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WO/2014/037334A1 |
A dissolved gas flotation apparatus (10) comprises: - a flotation tank(18) having an upstream contact zone separated by a baffle (9) from a downstream clarification zone; - one or more pressure reduction nozzles (28) arranged to discharg...
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WO/2014/033370A1 |
A method of filtering a sludge, which consists of solid material and a liquid phase. In the method, the sludge is fed to a filtering unit, such as a suction filter, with which the solid material is separated from the liquid. According to...
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WO/2014/029932A1 |
The present invention relates to fatty-amidoamine-based collectors for the flotation enrichment of aqueous ore suspensions, and to the use of said fatty-amidoamine-based collectors in flotation processes for ore enrichment, more particul...
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WO/2014/029931A1 |
The present invention relates to alcoxylated-fatty-polyamine-based collectors for the flotation enrichment of aqueous ore suspensions, and to the use of said alcoxylated-fatty-polyamine-based collectors in flotation processes for ore enr...
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WO/2014/016110A1 |
The invention relates to a method for determining a distribution of sizes of bubbles (3) which are provided in a liquid (2) and are relevant for a process, in particular flotation, wherein an acoustic measurement signal from a container ...
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WO/2014/012823A1 |
The invention relates to a method for controlling or regulating a floatation unit (1) for removing interfering substances from a fibrous-material suspension (S). The floatation unit comprises at least one floatation cell (5), by means of...
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WO/2014/012139A1 |
Novel collectors in the form of mixtures of one or more monothiophosphates and one or more thionocarbamates, optionally containing other materials useful for enhancing the performance of the collectors, are used in froth flotation proces...
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WO/2014/008581A1 |
There is a method described of treating tailings which are composed of at least some water and clay particles. Within the tailings, at least some water molecules are weakly bond to the clay particles to form a gel like fluid from which w...
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WO/2014/000844A1 |
This invention relates to an composition, comprising A) at least one quaternary ammonium compound which is a collector for the reverse flotation of magnesium minerals from calcium carbonate B) at least one antifoam agent C) a solvent and...
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WO/2014/003894A1 |
A rotor for flotation machines or flotation cells of flotation machines includes blades that are configured to provide improved bubble flow and bubble generation performance while also reducing the power requirements for rotating the rot...
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WO/2013/189685A1 |
The invention relates to a device (1,1´,1´´,1´´´) for separating magnetic and/or magnetizable particles from a suspension (9) which also contains nonmagnetic and/or non-magnetizable particles. The device comprises - at least one ma...
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WO/2013/188419A1 |
A process for cleaning and dewatering hydrophobic particulate materials is presented. The process is performed in in two steps: 1) agglomeration of the hydrophobic particles in a first hydrophobic liquid/aqueous mixture; followed by 2) d...
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WO/2013/173257A2 |
A system and method of operating the same includes an absorption tank having a compressor communicating gas thereto, a suspended solid filtration tank having a primary inlet, a secondary inlet, a primary outlet and a secondary outlet and...
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WO/2013/171509A1 |
A dissolved gas flotation apparatus (10) comprises: - a flotation tank (18); - one or more pressure reduction nozzles (28) arranged to discharge into the flotation tank (18); - an underflow exit baffle (19) defining the upper part of an ...
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WO/2013/170296A1 |
A method of controlling a froth flotation cell in a froth flotation circuit for separating substances is disclosed. The method includes controlling flotation gas flow rate to the cell based on changes in cell conditions to maintain the o...
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WO/2013/167728A1 |
The present invention concerns a method for treating soil contaminated by at least one radionuclide such as caesium 137Cs comprising at least one step of separating said radionuclide by dispersed air flotation foam produced by injecting ...
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WO/2013/169140A1 |
Method and apparatus for controlling the flotation process of sulphide ores including separation of sulphide minerals from pyrite in an alkaline environment created by lime. The method comprises measuring the molybdenum electrode pote...
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WO/2013/169141A1 |
A method and an apparatus for the separation of the mineral components of a pyrite containing copper- molybdenum ore by flotation. The method comprises grinding the ore in the presence of soda ash in an open circuit to produce an aqueous...
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WO/2013/169387A1 |
A method for obtaining rare earth element compositions is disclosed. The method includes providing a dispersed aqueous suspension of a particulate material including at least one rare earth element compound and kaolinite. The method furt...
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WO/2013/156020A1 |
The invention relates to a method for reducing the losses of valuable substances in mineral processing, wherein a mineral mixture, dry or suspended, has a grain fraction with a tailings portion and a superficial valuable material portion...
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WO/2013/152412A1 |
A method of using the synergy of multiple depressants to improve the depression of iron sulphide without compromising the recovery of the valuable sulphide minerals in the flotation of non-ferrous metal sulphides, while reducing or elimi...
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WO/2013/149231A1 |
Apparatus is provided featuring a first and second cells. The first cell receives an ore slurry having mineral particles of interest, receives unexpanded polymer microspheres comprising a surface having mineral collector chemistry attach...
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WO/2013/130794A1 |
The present invention provides new techniques related to magnetically controllable and/or steerable froth for use in separation processes of mineral-bearing ore and bitumen. Apparatus is provided featuring a processor configured to conta...
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WO/2013/129922A1 |
Device for separating out of a liquid for purifying floating components present in this liquid, comprising a container with at least one first inlet conduit on an upstream side for admitting liquid for purifying and at least one outlet c...
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WO/2013/120689A1 |
A flotation method for mineral processing is disclosed. The method for floating comprises a first step comprises using a first carboxymethyl cellulose (CMC) in a first flotation cell, and a subsequent step comprises using a second CMC in...
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WO/2013/116898A1 |
Novel thionocarbamate compounds having one or more substituents with five or more carbon atoms have been produced and evaluated as collectors used in froth flotation processes for the recovery of minerals. The amounts of minerals being r...
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WO/2013/117454A1 |
The invention relates to a method for determining the amount of foam in a fluid container (1) containing a fluid (5), in particular in the production of a fibrous web, in particular a paper, cardboard, or tissue web, wherein the fluid (5...
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WO/2013/113253A1 |
Disclosed is an energy-saving axial-flow microbubble flotation cell for mineral flotation, composed of a cell body (1), a power apparatus (2), a drive shaft (3), an axial-flow pump (4), a gas inlet pipe (9), a gas inlet branch pipe (10),...
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WO/2013/110420A1 |
The present invention is directed to methods that can be used in the enrichment of metal sulfide ores in desired minerals in cases where the ores have sulfide-containing gangues. The method involves adding an oxidant to slurries prepared...
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WO/2013/110383A1 |
The invention relates to a method and a device for removing solids from an aqueous fibrous suspension (1) by means of gas bubbles, wherein a fibrous-suspension gas mixture (2) is supplied to form a flotation foam (3, 4) in at least two f...
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WO/2013/110757A1 |
The present invention is directed to methods that can be used in the enrichment of metal sulfide ores in desired minerals in cases where the ores have sulfide-containing gangues. The method involves adding an oxidant such as hydrogen per...
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WO/2013/110386A1 |
The invention relates to a method for removing solids from an aqueous fibrous suspension (1) by means of gas bubbles in a flotation unit comprising a plurality of flotation cells (2), wherein a fibrous suspension gas mixture (3) is suppl...
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WO/2013/096787A1 |
A process for treating a tailings stream which comprises water and solids such as sand and clay, the process comprising the steps of: (i) adding a cement to the tailings stream; and (ii) separating at least a portion of the cement and so...
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WO/2013/092797A1 |
There is disclosed certain hyperbranched polyester amides with a cloud point of50º Cwith end groups selected from: polyalkylene glycol functional end groups that are useful various end uses such as a flocculant
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WO/2013/092440A1 |
The present invention relates to a composition comprising a polyesteramine or a polyester polyquaternary ammonium compound and a chelating agent, and to various uses of such a composition, for example as corrosion inhibitor, cleaning age...
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