Entries |
Document | Title | Date |
20100166624 | METHODS FOR SELECTIVELY SEPARATING CARBON NANOTUBES - A method of separating at least one carbon nanotube having a desired diameter and/or chirality from a mixture of carbon nanotubes having different diameters and/or chiralities is provided. A calixarene of formula (I): | 07-01-2010 |
20100166625 | SYSTEM AND METHOD FOR WASTEWATER TREATMENT - The present disclosure is directed towards systems and methods for the treatment of wastewater. A system in accordance with one particular embodiment may include a front end system including at least one resin tank configured to contain an ion exchange resin configured to target a particular metal. The at least one resin tank may be configured to receive an output from an oxidation reactor configured to receive a flow of wastewater from a wastewater producing process. The system may further include a central processing system configured to receive a saturated resin tank from the at least one resin tank. The central processing system may further include a vacuum filter band system configured to receive a slurry from the saturated resin tank and to provide a cascading resin rinse to the slurry. The central processing system may further include a repetitive stripping system configured to receive a metal-filled purification unit from a metal specific purification system. The repetitive stripping system may be further configured to sequentially apply the contents of a plurality of acid tanks to the metal-filled purification unit to generate a metal salt. Numerous other embodiments are also within the scope of the present disclosure. | 07-01-2010 |
20110150728 | Odor Control - A process for producing a mineral concentrate product that at is at least a substantially odour-free product comprises any one or more than one of (a) organics removal by (i) treatment of a froth product slurry containing floated mineral particles to remove organic compounds from the mineral particles and/or (ii) thermal treatment, and (b) addition of chemicals to prevent residual organic compounds on mineral concentrates being converted to odorous compounds, particularly while the concentrates are being stock-piled or transported. | 06-23-2011 |
20120128553 | METHOD OF FIXING CARBON DIOXIDE COMPRISING A STEP OF RECYCLING THE USED EXTRACTION SOLVENT - A method of fixing carbon dioxide is provided. After metal ion components are extracted from natural mineral or steel slag through acid treatment, carbon dioxide is injected to fix carbon dioxide by carbonating the same. Since the procedure of pH adjustment is unnecessary, the reaction is carried out effectively, and a continuous process is enabled. Further, since the used extraction solvent is recycled, the cost of fixing carbon dioxide is reduced. The disclosed method of fixing carbon dioxide enables effective removal of carbon dioxide produced from the steelmaking industry, thereby significantly reducing greenhouse gas emission and allowing recycling of the conventionally discarded steel slag. | 05-24-2012 |
20120128554 | METHODS FOR AGGLOMERATING ORES - A method for making an agglomerate of an ore is disclosed. The method comprises contacting the ore with an acid solution and a stucco binder. The stucco binder may include calcium sulfate hemihydrate. The ore agglomerate may include ore, acid solution, and stucco-derived gypsum. | 05-24-2012 |
20120134899 | PROCESS FOR RECOVERING METALS FROM A STREAM RICH IN HYDROCARBONS AND CARBONACEOUS RESIDUES - A process for recovering metals from a stream rich in hydrocarbons and carbonaceous residues by means of a treatment section, characterized in that it comprises the following steps: sending said stream to a primary treatment, effected in one or more steps, wherein said stream is treated in the presence of a fluxant agent in a suitable apparatus, at a temperature ranging from 80 to 180° C., preferably from 100 to 160° C., and subjected to liquid/solid separation in order to obtain a clarified product essentially consisting of liquids and a cake (oilcake); possibly subjecting the separated cake to drying, in order to remove the hydrocarbon component having a boiling point lower than a temperature ranging from 300 to 350° C. from the cake; sending the cake, possibly dried, to a secondary thermal treatment comprising: a flameless pyrolysis of the cake effected between 400 and 800° C., preferably between 500 and 670° C.; an oxidation of the pyrolysis residue effected in an oxidizing environment and at temperatures ranging from 400 to 800° C., preferably from 500 to 700° C. | 05-31-2012 |
20120189512 | METHOD FOR CONTINUOUS MAGNETIC ORE SEPARATION AND/OR DRESSING AND RELATED SYSTEM - A method for magnetic ore separation and/or dressing is provided, in which metalliferous recoverable materials are separated from conveyed metalliferous ore rock. The method may include producing a pulp including metalliferous recoverable material, executing a hydrophobizing reaction of recoverable material in the pulp, synthesizing a hydrophobized, magnetizable material in liquid suspension and adding this suspension to the pulp, causing an agglomeration reaction between hydrophobized magnetizable material and hydrophobized recoverable material to form magnetizable agglomerates in the pulp, separating the magnetizable agglomerates from the pulp, mixing separation products containing the agglomerates with a non-polar liquid insoluble in water and decomposing the agglomerates in the non-polar liquid into magnetizable material and recoverable material, separating the magnetizable material from the recoverable material, and removing moisture from the separation portion containing the recoverable material of the second separation stage to synthesize the recoverable material. | 07-26-2012 |
20120237417 | Process for recovery of noble metals from functionalised, noble metal-containing adsorption materials - A method recovers noble metals from noble metal-containing compositions and includes steps of (i) providing a noble metal-containing composition containing an adsorption agent that is based on an inorganic material and is functionalized by organic groups and has at least one noble metal adsorbed to it, and (ii) ashing of the noble metal-containing composition provided in step (i) in order to adjust a residual carbon content of at most 10% by weight, relative to the total weight of the noble metal-containing composition after ashing, to obtain an ashed composition. | 09-20-2012 |
20130302223 | Recycling Batteries Having Basic Electrolytes - Embodiments related to recycling alkaline batteries are disclosed. In one disclosed embodiment, a method for recycling a battery having a basic electrolyte comprises rupturing the battery under anaerobic conditions and flooding the interior of the battery with carbon dioxide in an anaerobic chamber. | 11-14-2013 |
20140017152 | METHOD FOR TREATING ARSENIC CONTAINING MATERIALS - A method for selectively removing arsenic from a sulphide material containing arsenic by conducting a leaching step that includes contacting the material with a leaching solution that leaches arsenic from the material to form a pregnant liquor containing dissolved arsenic and a solid of a sulphide material of reduced arsenic content, and subsequently separating the solid from the pregnant liquor. The fresh leaching solution that is provided to the leaching step is an alkaline solution having a sulphide-containing compound present in an amount of from 0 to 1.0 times the amount of sulphur containing compound required to react with the arsenic present in the material. | 01-16-2014 |
20140023570 | MODIFIED POLY (STYRENE-CO-MALEIC ANHYDRIDE) AND USES THEREOF - A polymeric compound is provided having the general formula (A) wherein R is an alkyl chain preferably having from 1 to 6 carbon atoms in the chain which may be either saturated or unsaturated and may have substituents attached to the chain, and R′ and R″, which may be the same or different from each other and preferably have from 1 to 4 carbon atoms in a chain, are selected from alkyl groups, substituted or unsubstituted, or R′ and R″ are linked to form a saturated or unsaturated cyclic moiety incorporating the adjacent nitrogen atom, with or without additional heteroatoms in the ring. The polymeric compound is preferably in a particulate form and most particularly in the form of nanoparticles. A method of producing the polymers is disclosed. A method of adsorbing, separating and stripping the polymers is also disclosed. | 01-23-2014 |
20140056786 | Device and Method for the Thermal Treatment of Fluorine-Containing and Noble Metal-Containing Products - The present invention relates to an ashing plant for enriching noble metals from fluorine-containing materials, comprising
| 02-27-2014 |
20140072484 | DECARBONATION PROCESS - A process for decarbonation of particles of raw meal, to be burnt in a clinkering kiln at a cement plant, the process includes: a) decarbonation of particles of raw meal, in a fluidised bed heat exchanger, the particles being suspended in a rising carrier gas including carbon dioxide, the fluidised bed heat exchanger having a solid heat carrier circulating counter-current relative to the carrier gas, to provide an effluent gas including carbon dioxide and decarbonated raw meal; b) separating the effluent gas and the decarbonated raw meal c) separating the effluent gas into a first and second part; cooling the first part of the effluent gas and recycling to provide carrier gas, d) isolating the second part of effluent gas e) recovering and re-heating the heat carrier and recirculating to step (a). | 03-13-2014 |
20140127094 | PROCESSING OF SULFATE AND/OR SULFIDE-RICH WASTE USING CO2-ENRICHED GASES TO SEQUESTER CO2, REDUCE ENVIRONMENTAL IMPACTS INCLUDING ACID ROCK DRAINAGE AND PRODUCE REACTION PRODUCTS - A process is provided for stabilizing a sulfate and/or sulfide-rich waste material, comprising metal sulfide minerals, and sequestering CO | 05-08-2014 |
20140178272 | HEAP-LEACH PAD INJECTION SYSTEM AND METHOD - In one embodiment, the present disclosure provides an extraction method. A conduit is formed in a heap-leach pad. The heap-leach pad includes a plurality of poorly perfused areas. The conduit is in fluid communication with poorly perfused areas of the heap-leach pad. A fluid that includes steam is injected into the conduit. The fluid travels through the heap-leach pad and condenses in poorly perfused areas of the heap-leach pad. An extraction solution is applied to the heap-leach pad. Condensation of steam in the poorly perfused areas of the heap-leach pad provides new flow pathways for the extraction solution. | 06-26-2014 |
20140193316 | METHOD FOR RECYCLING METALS - A method for recycling metals is provided by using extracellular proteins excreted by a specific thermophilic bacteria strain, | 07-10-2014 |
20140199217 | MINERAL SEPARATION USING FUNCTIONALIZED FILTERS AND MEMBRANES - An apparatus for collecting mineral particles in a slurry or the tailings is disclosed. The apparatus may take the form of a filter, a conveyor belt or an impeller to be used in a processor to collect mineral particles in the slurry, or in a tailings pond to collect mineral particles in the tailings. The filter, conveyor belt or impeller has a collection area made of or coated with a synthetic material having a functional group, either anionic or cationic to attach to the mineral particles. Alternatively, the synthetic material has hydrophobic molecules to render the collection area hydrophobic. When the mineral particles in the slurry or tailings are combined with collector molecules, the mineral particles also become hydrophobic. The hydrophobic mineral particles are attracted to the hydrophobic collection area. The filter, conveyor belt and impeller may have a plurality of passage ways in order to increase the contacting surfaces. | 07-17-2014 |
20140212346 | PROCESS OF LEACHING PRECIOUS METALS - The invention relates to modifications of a non-ammoniacal thiosulfate process of leaching precious metals (e.g. gold or silver) from precious metal-containing ores. The process involves leaching the ore with an aqueous lixiviant containing a soluble thiosulfate other than ammonium thiosulfate, a copper compound and an organic compound that serves as a copper ligand (i.e. a ligand-forming compound). Four modifications of this process are effective for increasing the amount of precious metal that can be extracted, reducing the consumption of materials, or for improving the rate of extraction. These four process, which may be used singly or in any combination, include (a) additions of soluble lead (e.g. as lead nitrate), (b) additions of thiourea, (c) increases in dissolved oxygen, and (d) increases of temperature at ambient pressure. This avoids the use environmentally harmful chemicals and allows for extraction from a variety of ores, e.g., containing substantial amounts of sulfides and/or quartz. | 07-31-2014 |
20140322106 | METHOD FOR THE TREATMENT OF ORE MATERIAL - A method for treating an ore material with electro-magnetic energy, the method comprising at least the steps of: agglomerating the ore material; irradiating the ore material with electromagnetic energy; thereby heating the liquid in the ore material; vapourising at least a portion of the liquid in the ore material; forming micro-channels in the ore material, and acid leaching the ore material. | 10-30-2014 |
20140348727 | System and Method for the Calcination of Minerals - A system and method for the calcination of minerals. The system comprises a vertically disposed reactor segment configured to impart horizontal forces on particles passing through the reactor segment in a vertical direction; an injector unit for receiving granular feedstock, the injector unit being disposed at a top portion of the reactor segment, whereby granules of the feedstock move through the reactor segment in a granular flow under at least one of a group consisting of a force of steam, gravitational force and a centrifugal force; a reactor heat exchange unit thermally coupled to a wall of the reactor segment for providing heat to the flowing granules inside the reactor segment through heat transfer through the wall of the reactor segment; one or more inlets formed in the reactor segment for introducing a superheated gas into the reactor segment to create conditions of a gas-solid multiphase system; and one or more exhaust openings formed in the retort segment such that gas products are at least partially flushed from the reactor segment under the flow of the superheated gas from the inlets to the exhaust openings. | 11-27-2014 |
20150125365 | CYANIDE-LEACHING PROCESS - A process for recovering a precious metal from ore includes adding process water containing thiocyanates to ore particles to obtain a pulp. The pulp having a basic pH is contacted with an oxidizing gas containing ozone; and the pulp is contacted with cyanide. Contacting the pulp with cyanide can include adding cyanide subsequently to contacting the pulp with the oxidizing gas containing ozone. | 05-07-2015 |
20150147246 | FILTRATION MEDIUM AND PROCESS FOR FILTERING A FLUID STREAM - A filtration medium comprises a textile substrate and a mercury abatement coating on a least a portion of the surface of the textile substrate. The mercury abatement coating comprises a copper salt, a binder, and other optional components. A process for removing mercury from a gaseous stream uses the filtration medium. | 05-28-2015 |