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Patent Searching and Data


Matches 51 - 100 out of 4,041

Document Document Title
WO/2014/084129
Provided is a neutralization treatment method, whereby, in a neutralization treatment that is carried out for discharging a process solution generated in a metal refining process to the outside of a system, it becomes possible to reduce ...  
WO/2014/082113
A method (10) for the hydrometallurgical processing of rare earth and uranium containing ores and concentrates, the method comprising the steps of: (i) Passing a rare earth ore to a concentration step in which is produced a rare earth ph...  
WO/2014/080665
One of the purposes of the present invention is to provide a settling separation method for a neutralized slurry, said settling separation method being capable of: efficiently neutralizing a leachate obtained by leaching nickel and cobal...  
WO/2014/080408
A system and method are disclosed for mixing a suspension. The suspension may optionally have a low liquid viscosity. The suspension may, optionally, include a metallurgy solvent extraction (SX) mixture. The system and method may be at a...  
WO/2014/076544
In an example of a method for recovering lead from a lead material including lead sulfide, methane sulfonic acid is selected as a leaching acid for the lead material. The lead material is exposed to a solution including the methane sulfo...  
WO/2014/075148
A heap of a material to be leached to recover a valuable metal from the material includes an electromagnetic heating system to generate heat in situ in the heap.  
WO/2014/075173
There are provided processes for purifying aluminum ions. Such processes comprise precipitating the aluminum ions under the form of AI(OH)3 at a first pH range; converting AI(OH)3 into AICI3 by reacting AI(OH)3 with HCI and precipitating...  
WO/2014/071510
The present disclosure broadly relates to a novel process for the recovery of rare earths oxides from phosphors, fluorescent lamps and light bulbs, cathode ray tubes and other industrial wastes containing rare earths elements in the form...  
WO/2014/074985
A method of leaching a copper bearing sulfide mineral slurry containing chalcopyrite is described. The method comprises the steps of providing a slurry having chalcopyrite particles therein, exposing the slurry to an acidic leach solutio...  
WO/2014/074029
The invention relates to a technique for recovering rare earth metals from solid minerals and also from by-products of solid mineral processing. The method for recovering rare earth metals involves the acid leaching of solid minerals and...  
WO/2014/071513
A process is disclosed for treating a Bayer process waste comprising a slurry containing bauxite residue and dissolved aluminium. The process comprises supplying the waste to a settling area to cause the bauxite residue to settle out of ...  
WO/2014/069474
Provided are: a graft copolymer which enables a large amount of introduction of an adsorptive functional group that adsorbs a metal and the like; a method for producing this graft copolymer; and an adsorbent material which uses this graf...  
WO/2014/068642
The purpose of the present invention is to provide a metal refining device that can improve the recovery efficiency in metal refining. The metal refining device is a metal refining device that recovers metal material constituting an elec...  
WO/2014/069463
Provided is a method for collecting silver having high purity from an acidic aqueous solution containing iron and/or zinc and silver using a simple apparatus and with high efficiency. A method for collecting silver, comprising separating...  
WO/2014/064530
A method to recover gold lost in roaster calcine-leach tailings, due to the formation of cyanide refractory compounds or morphologies during the roasting process. The process can include acid leaching of magnetic concentrate from roaster...  
WO/2014/066169
An improved method for treating manganese-containing materials, such as nodules recovered by undersea mining, including reacting the materials with ammonia, and leaching with a mineral acid, and to methods for recovering valuable constit...  
WO/2014/066727
Disclosed is a method and apparatus for recovering scandium values in a metal-bearing effluent, e.g., from a fluidized bed chlorination process, without using environmentally persistent organic extractants and solvents. The disclosed pro...  
WO/2014/066668
Methods are described for the recovery and separation of the rare earth elements from ore, tailings, or any other solid source. The methods described utilize mechanochemical methods for creating chemical compounds and complexes which are...  
WO/2014/062289
A process for the recovery of gold from a gold-bearing aqueous filtrate, the process comprising the steps of: (A) Contacting the aqueous filtrate with dibutyl carbitol (DBC) in a two-stage solvent extraction process to remove the gold fr...  
WO/2014/057922
Provided is a method whereby rare earth elements can be separated from a rare earth magnet in a simple manner with a high separation rate, and a separating device for carrying out said method. The rare earth element separation method acc...  
WO/2014/056034
A method for recovery of gold from a gold-containing, refractory pyrite-rich ore or concentrate is disclosed. The method results in the production of a high grade, gold-containing solid intermediate concentrate. One embodiment comprises ...  
WO/2014/058312
The present invention relates to a method for extracting metal and/or metalloid ions from an aqueous medium, comprising the steps of: a) mixing the aqueous medium with an ionic liquid comprising an aliphatic carboxylate anion having at l...  
WO/2014/053705
The invention relates to a method of recovering silver and a method of controlling a leaching process for recovering silver from a direct zinc leach residue, an apparatus for recovering silver from a direct zinc leach residue, a control ...  
WO/2014/047761
Disclosed is a method for producing a high-purity nanometer zinc oxide from low-grade zinc oxide ore by an ammonia process. The method comprises: taking slaked lime of 3-5% mass of the low-grade zinc oxide ore for activation before leach...  
WO/2014/047728
A process for preparing alumina, said process comprising leaching an aluminum-containing material with HC1 so as to obtain a leachate comprising aluminum ions, magnesium ions and a solid, and separating said solid from said leachate; sub...  
WO/2014/047759
Disclosed is a method for producing a high-purity nanometer zinc oxide from electrolytic zinc acid-leaching residues by an ammonia process. The method comprises: adding slaked lime being 1-5% of the mass of electrolytic zinc acid-leachin...  
WO/2014/047672
A two stage method (10) for the recovery of nickel and other metals from nickel bearing laterite ore, sulphide ore, oxide ore or concentrate (14), and nickel sulphide ore or tailings (24) is described. The method (10) in a first stage le...  
WO/2014/048385
Provided is a method for comprehensively recovering rare earth and fluorine in the bastnaesite treatment process, the method comprising: oxidizing and roasting the bastnaesite, using hydrochloric acid to leach the roasted mixture, adding...  
WO/2014/047762
Disclosed is a method for producing a nanometer zinc oxide from low-grade zinc oxide ore by ammonia decarburization. The method comprises: taking ammonia water-ammonium bicarbonate solution as a leaching agent; adding 0.3-0.5 kg sodium f...  
WO/2014/047763
Provided is a method for producing a high-purity nanometer zinc oxide from steel plant smoke and dust by an ammonia process. The method comprises the following steps of: leaching the steel plant smoke and dust, carrying out purification ...  
WO/2014/047764
Disclosed is a method for producing a high-purity nanometer zinc oxide from steel plant smoke and dust by ammonia decarburization. The method comprises: leaching with an ammonia water-ammonium carbonate solution as a leaching agent, addi...  
WO/2014/043771
The present invention relates to a process, equipment and circuit for concentrating mineral ores, using a combination of different technologies, such as clarification and separation of fines and ultra-fines; replacing cyclones during pre...  
WO/2014/043771
The present invention relates to a process, equipment and circuit for concentrating mineral ores, using a combination of different technologies, such as clarification and separation of fines and ultra-fines; replacing cyclones during pre...  
WO/2014/042549
The invention relates to metallurgy, specifically to acidic methods for producing alumina, and can be used in the processing of low-quality aluminium-containing raw materials. The method for producing alumina comprises treating an alumin...  
WO/2014/042131
Provided is a method for recovering gold with which it is possible to increase the amount of gold adsorbed by activated carbon. This method for recovering gold comprises: a step for obtaining a gold leachate by using an acidic leaching s...  
WO/2014/042136
Provided is a method that uses a minimal amount of acid or alkali, involves a simple process, is inexpensive to operate, and can separate out and recover lithium, cobalt, or the like with high yield. After vacuum-baking, pulverization, a...  
WO/2014/041178
The present invention provides an enzymatic method for dissolving sulfide minerals in an aqueous composition.  
WO/2014/042948
A system and method for recovering a metal value from a metal-bearing ore material are provided. A metal-bearing ore can be mixed with certain substances and to form an agglomerated ore. In an intermediate state, between agglomeration an...  
WO/2014/040138
A method for the selective recovery of nickel and cobalt from an ore processing stream is provided which includes the steps of contacting the ore processing stream with a resin presenting tertiary amine groups, separating the loaded resi...  
WO/2014/041178
The present invention provides an enzymatic method for dissolving sulfide minerals in an aqueous composition.  
WO/2014/040136
A process for extracting uranium from an acidic uranium, chloride, iron and sulphate containing solution, including the steps: a. contacting the solution with an organic phase containing a trialkylphosphine oxide to form a uranium loaded...  
WO/2014/037335
A method for recovery of iron in the form of an iron oxide as useful product, such as hematite, from a leach solution obtained from leaching of a nickel laterite ore, is proposed which comprises an oxidation and a hydrolysis of a ferric ...  
WO/2014/037433
A method of dissolution of minerals in acid is disclosed. The method comprises providing minerals to be leached in an aqueous solution, supplying acid or an acid precursor to the aqueous solution, thereby forming a reaction mixture compr...  
WO/2014/038236
The present invention improves the leaching speed of gold while also inhibiting the generation of sulfur dioxide in a method for leaching gold from gold ore containing pyrite without using highly poisonous chemicals such as cyanogen, thi...  
WO/2014/038762
Disclosed is a method for effectively leaching valuable metals such as vanadium and tungsten contained in a waste denitrification catalyst by using roasting and water leaching. According to the present invention, the method for leaching ...  
WO/2014/037336
We propose a method for leaching nickel, cobalt and iron from a nickel laterite ore, characterized in that the nickel laterite ore is brought into contact with a solution of sulphuric acid and urea mixture. In this way, there is provided...  
WO/2014/032095
A method for recovering scandium comprises the steps of providing an aqueous solution containing one or more dissolved EDTA salts, contacting the solution with a scandium-containing material so that scandium and at least one other impuri...  
WO/2014/034296
In the present invention, n iterations of a separation step (n≥2) are performed, the separation step including a step for forming an aggregate by adding an organic compound having an amino group and a polymer having a carboxyl group to...  
WO/2014/036270
Described herein are methods of recovering silver from solution to produce metallic (i.e., elemental) silver. These methods generally include a step of providing a silver-containing aqueous solution that includes cationic silver species,...  
WO/2014/030878
Disclosed is a method for separating and collecting useful metals from a waste lead-free solder. The method for separating and collecting useful metals in the waste lead-free solder according to the present invention, comprises: a leachi...  

Matches 51 - 100 out of 4,041