Class / Patent application number | Description | Number of patent applications / Date published |
023 | Chemistry: physical processes | 33 |
023293000 | PHYSICAL PROCESSES | 33 |
20080263832 | Reactor for Mixing and Reacting Two or More Fluids As Well As Transferring Heat Between Said Fluids and a Method for Operating Said Reactor - The present invention relates to a reactor for mixing and reacting two or more fluids as well as transferring heat between said fluids. Said reactor comprises a pressure vessel (g) having at least one inlet and one outlet and which enclose a multi-channel monolithic structure (f), a manifold assembly (b) sealed to one end of said structure where the channel openings are, for feeding fluid to said structure and discharging fluid from said structure, a means (h) sealed to the opposite end of said structure where said manifold assembly is sealed, for changing the direction of fluid flow path 180 degrees when said flow leaves the channels in said structure. Furthermore, the present invention relates to a method for operating said reactor. | 10-30-2008 |
20120110789 | METHOD FOR PREPARING A SUSPENSION - A method for preparing a suspension from a separation process, wherein the suspension is made of a particulate abrasive and a liquid slurrying agent. The method includes the steps of: a) thinning the suspension in a tank with an additional slurrying agent (PEG) without adding additional water, producing a constant volume ratio between the particulate abrasive and the liquid slurrying agent; b) separating the thinned suspension into a liquid and a solid fraction in a centrifugal separator, and c) subsequent refinement or reuse of the separated liquid and solid fractions. | 05-10-2012 |
20130042438 | METHOD FOR PROCESSING SPODUMENE - The invention relates to a method for thermally processing α-spodumene, i.e. lithium aluminum silicate, by which treatment it is transformed into β-spodumene, which is more advantageous for further processing; in the method, concentrate or ore with a grain size of 20-1,000 μm is processed in a fluidized bed reactor, at a temperature of 800-1,000° C., by using an oxygenous gas as the fluidizing gas. | 02-21-2013 |
20110271490 | SYSTEM AND METHOD THAT REMOVES CONTAMINANTS FROM SULFUR - A system and method for removing contaminant from sulfur (or sulphur) to a level that allows re-processed sulfur to reenter a supply chain. The system and method melt contaminated sulfur, filters the molten sulfur, and then dispenses the less contaminated sulfur after filtering it. More specifically, solid contaminated sulfur enters a settling tank, while heated molten sulfur circulates through the system and the settling tank. The circulation of the molten sulfur assists in the melting process of the solid sulfur, allowing the solid sulfur to melt efficiently. In preferred embodiments of the system, the system uses steam jacked sulfur lines and steam tracing to maintain temperatures for melting the solid sulfur and maintaining the molten state of the sulfur circulating through the system. Furthermore, the system comprises a programmable logic controller, which controls motors, pumps, valves, and environment monitoring instruments. | 11-10-2011 |
20130174380 | USE OF HYDROPHILIC ORGANOMODIFIED SILOXANES AS A PROCESSING AID FOR MELT GRANULATION - Use of organomodified polysiloxanes which have at least three different polyether radicals, at least two of these polyether radicals differing by at least 9% by mass in the proportion of ethylene oxide units therein in the total weight of the polyether radical, as a release agent or release agent constituent in melt granulation. | 07-11-2013 |
023294000 | Sublimation | 1 |
20080196208 | Solid carbon dioxide as a fuel source - Embodiments of solid carbon dioxide fuel utilize the sublimating properties of solid carbon dioxide. When placed inside an expansion chamber, with water, the sublimating CO | 08-21-2008 |
023295000 | Crystallization | 23 |
20080196209 | Method And Apparatus For Refining A Molten Material - A method for the directional solidification of silicon or other materials. A cooled plate is lowered into a silicon melt and an ingot of solid silicon is solidified downwards | 08-21-2008 |
20080295294 | PROCESSING OF FINE SILICON POWDER TO PRODUCE BULK SILICON - A method for using substantial quantities of silicon powders as charge and processing it to produce a high quality silicon ingots suitable for photovoltaic use is disclosed. In a fused silica crucible, silicon feedstock containing more than about 5% by weight silicon powder is charged. The crucible with the charged silicon feedstock is placed into a furnace chamber and a vacuum is drawn to remove air. The vacuum is applied slowly. Then, the furnace chamber is backfilled with argon gas and heated to form molten silicon. Afterward, the molten silicon is solidified and annealed to form a multicrystalline silicon ingot. | 12-04-2008 |
20090049653 | - This invention intends to enable silicon compound to be removed from waste etching solution at a high removal rate and waste etching solution to be recycled without disposing it. The etching solution reproducing apparatus includes: temperature adjusting means for adjusting the temperature of taken out waste etching solution; atomizing means for atomizing waste etching solution adjusted in temperature by the temperature adjusting means; precipitating means for collecting waste etching solution atomized by the atomizing means and precipitating silicon compound in the waste etching solution; and separating means for separating silicon compound precipitated from the waste etching solution by the precipitating means so as to obtain reproduced etching solution. | 02-26-2009 |
20090119882 | Firmly adhering silicon nitride-containing release layer - The invention relates to a slip for producing a durable, firmly adhering release layer on a substrate, comprising a suspension of solid particles, wherein the solid particles comprise 67-95% by weight of silicon nitride and 5-33% by weight of an SiO | 05-14-2009 |
20110138581 | CRYSTALLIZATION METHOD AND CRYSTALLIZATION APPARATUS - A crystallization method includes: actually measuring a particle number of the crystals precipitated from the saturated solution and a concentration of the saturated solution, while cooling the solution according to a cooling temperature profile; calculating an absolute particle number of crystals precipitated from the saturated solution according to a mass balance, based on an actual measurement value of the particle number and an actual measurement value of the concentration; heating the saturated solution when the absolute particle number exceeds a threshold to perform heating control so that the absolute particle number becomes a set value; and cooling the saturated solution again according to a preset cooling temperature profile after controlling to dissolve excessive crystals in the solution so that the absolute particle number returns to the set value. | 06-16-2011 |
20120131766 | Sheet Wafer Defect Mitigation - A method of forming a sheet wafer melts feedstock material in a crucible that is part of a crystal growth furnace, and passes a plurality of filaments through the crucible to form a (un-separated) sheet wafers. A plurality of sheet wafers may be formed in different lanes in the crucible. One or more vision systems is used, during growth, to determine if a sheet wafer has a defective condition. If a defect is detected, then any of a variety of corrective actions may be taken, such as activating a cutting device to remove at least a portion of the sheet wafer, assessing the defect and grading a portion of the sheet wafer (e.g., for sorting based on grade), and/or producing an indicia. In a multiple-lane embodiment, a defect may be attended to in one lane while sheet growth continues in one or more other lanes. | 05-31-2012 |
20120137473 | PROCESS FOR PRODUCTION OF MULTICRYSTALLINE SILICON INGOTS BY INDUCTION METHOD - A process for the production of multicrystalline silicon ingots by the induction method comprises charging a silicon raw material into the melting chamber of a cooled crucible enveloped by an inductor, forming a melt surface, and melting, wherein the mass rate of charging the silicon raw material and the speed of pulling the ingot are set such that provide for the melt surface position below the upper plane of the inductor but not lower than ⅓ of the height thereof and the melt surface is kept at the same level. In doing this the melt surface position is kept at the same level by maintaining one of the output parameters of the inductor feed within a predetermined range. The process provides for casting multicrystalline silicon ingots suitable for solar cell fabrication and it is notable for higher efficiency and lower specific energy consumption. | 06-07-2012 |
20120297580 | METHOD AND DEVICE FOR OBTAINING A MULTICRYSTALLINE SEMICONDUCTOR MATERIAL, IN PARTICULAR SILICON - A device for obtaining multicrystalline silicon, including: at least one crucible, removably housed in a cup-shaped graphite container; a fluid-tight casing, including a fixed bottom half-shell and a vertically mobile top half-shell; a top induction coil, set facing, with interposition of a graphite plate, the crucible, a lateral induction coil and a bottom induction coil vertically mobile for varying the distance from the bottom wall; and means for a.c. electrical supply of the induction coils separately from one another; at least the lateral induction coil includes a plurality of plane turns set on top of one another, and means for selectively short-circuiting, supplying or not supplying the turns, all together or separately one or more at a time and for varying the frequency of supply thereof all together or separately one or more at a time. | 11-29-2012 |
20120311822 | Solute crystallizing apparatus - A solute crystallizing apparatus utilizing a solution having solute and a first solvent. A mixing unit for combining the solution and a second solvent which lowers the solubility of the solute. A pump receives the mixed solute, first solvent and second solvent and outputs the same under a positive pressure. A membrane separator, having a membrane, receives the pressured solute, first solvent and second solvent mixture and produces a slurry of crystals of the solute, the first solvent, and second solvent as the concentrate or retentate. A solution of the solute, the first solvent and second solvent passes through the membrane as permeate. The concentration of the solute in the retentate is greater than the concentration of solute in the permeate. | 12-13-2012 |
20130239370 | Heat Exchanger for a System for Solidification and/or Crystallization of a Semiconductor Material - Heat exchanger ( | 09-19-2013 |
20130247334 | Crucible for Solidifying a Silicon Ingot - The present invention relates to a crucible that can be used for solidifying a silicon ingot from molten silicon, characterized in that same is at least partially coated on the inner surface thereof with at least one layer consisting of a material produced by thermal decomposition of polysilizane(s), said layer having a shear strength greater than 1 Pa and no higher than 500 MPa, and being in the form of a stack of adjoining layers of non-contiguous tiles. The invention also relates to a method for preparing such crucibles. | 09-26-2013 |
20150059129 | PRODUCTION OF HIGH PURITY SALT WITH REDUCED LEVELS OF IMPURITIES - The invention discloses an improvement over the existing process of producing solar salt of high purity from seawater and minimizes the need for downstream purification. More particularly, the invention teaches the practical utility of recrystallization of salt in solar salt pans using seawater itself as the dissolving medium. The resultant recrystallized salt is obtained with a yield up to 80% and with much reduced levels of impurities. Special mention is made of the bromide level which is reduced 7-10 fold. The invention is most ideal for trace impurities which reside in the salt crystal lattice and are difficult to dislodge by conventional methods adopted for salt purification and where conventional recrystallization would be cost ineffective and scalability would pose a problem. The invention can be practiced by solar salt works based on seawater and where spare land is available to set up additional crystallizers required for the purpose of recrystallization. | 03-05-2015 |
023299000 | With extraction | 2 |
20110061205 | METHOD AND DEVICE FOR CONTINUOUSLY PRODUCING A CRYSTALLITE HAVING A CONSTANT PARTICLE SIZE DISTRIBUTION - The invention proposes a method and a device for continuously producing a crystallite, wherein a metered amount of seed crystals is fed continuously to the internal solution circuit of a crystallizer, in particular a DTB crystallizer, through a crystallization seed line from a seed generator preferably designed as a flash crystallizer. The amount of seed crystals fed is controlled by an electronic control system as a function of a measured value determined by a sensor, said value being representative of the particle size distribution of the crystallites in the solution in the internal circuit in the crystallizer. By way of a line, the seed generator receives a partial stream of the external solution circuit of the crystallizer, said external circuit being routed through a line. Excess fine crystalline suspension can be fed back to the external circuit from the seed generator by way of a return line. | 03-17-2011 |
20110146030 | Rotating knife, washing column, and method for disintegrating a crystal bed in a washing column - A rotating knife is disclosed for disintegrating a crystal bed formed in a washing column for processing suspension of solid particles in a liquid. The rotating knife is provided with a spoke support. The spoke support comprises at least two spokes. The relative angle of the spokes is between approximately 20° and approximately 80°. | 06-23-2011 |
023300000 | With added material | 6 |
20080289150 | Method of Purifying Metal - A method for purifying a metal, which includes: a first step of holding a first molten metal containing impurities in a first crucible; a second step of immersing a first cooling body in the first molten metal held in the first crucible while letting a cooling fluid flow in the interior of the cooling body to crystallize a first purified metal on a surface of the cooling body; a third step of taking out the first cooling body with the first purified metal crystallized thereon from the first molten metal; a fourth step of holding in a crucible a second molten metal having an impurity concentration less than that of the first molten metal of the first step; a fifth step of melting the first purified metal crystallized in the second step and holding the molten metal in a second crucible together with the second molten metal held in the fourth step; a sixth step of immersing a second cooling body in the second molten metal held in the fifth step while letting a cooling fluid flow in the interior of the cooling body to crystallize a second purified metal on a surface of the cooling body; and a seventh step of taking out the second cooling body with the second purified metal crystallized thereon in the sixth step from the second molten metal. | 11-27-2008 |
20090056080 | APPARATUS FOR FORMING PARTICLES OF A TARGET SUBSTANCE - Reactor vessel for an apparatus for forming particles of a target substance, includes:
| 03-05-2009 |
20100050393 | APPARATUS AND METHOD OF USE FOR AN INERT GAS REBREATHER USED IN FURNACE OPERATIONS - This invention relates to an apparatus and a method of use for an inert gas rebreather used in furnace operations, such as melting and/or casting high purity silicon for solar cells and solar modules. The apparatus includes a process chamber, a reservoir in fluid communication with the process chamber, and a motive force device in fluid communication with the process chamber and the reservoir. Recycling or reusing the inert gas reduces operating expenses of the casting process while maintaining low impurity levels in the cast silicon. | 03-04-2010 |
023301000 | Seed | 3 |
20080229549 | Method of growing group III nitride crystals - This disclosure pertains to a process for making single crystal Group III nitride, particularly gallium nitride, at low pressure and temperature, in the region of the phase diagram of Group III nitride where Group III nitride is thermodynamically stable comprises a charge in the reaction vessel of (a) Group III nitride material as a source, (b) a barrier of solvent interposed between said source of Group III nitride and the deposition site, the solvent being prepared from the lithium nitride (Li | 09-25-2008 |
20090000080 | Solid Hollow Fiber Cooling Crystallization Systems and Methods - A solid hollow fiber cooling crystallizer and method for crystallizing aqueous and organic solutions are provided. The solid hollow fiber crystallizer (SHFC) for carrying out cooling crystallization of inorganic/organic microsolutes/macrosolutes from solution generally includes a bundle of non-porous hollow fibers mounted within a shell where a feed solution for crystallization flows through the lumen side of the hollow fibers and a cooling solution flows through the shell side to form nuclei and subsequently crystals in the feed solution at a temperature below its saturation temperature. The solid hollow fiber crystallizer may be combined with a mixing device, such as a completely stirred tank or static mixer, to further effectuate crystallization. The solid hollow fiber crystallizer may be operated in a number of modes including feed recycle mode, once through mode, SHFC-in-line static mixer in series mode, and SHFC-CST in series mode. The advantages of solid hollow fiber cooling crystallization in comparison to conventional crystallization processes include improved temperature control between crystallizing solution and coolant, higher nucleation rates, improved control of crystal size and crystal size distribution, smaller crystal size, capability for decoupling crystal nucleation and crystal growth, decreased fouling of process equipment, and improved process scale-up. | 01-01-2009 |
20100024172 | PROCESS FOR CONTINUOUS PRODUCTION OF LARGE CRYSTAL PRODUCTS - The invention relates to a continuous process for preparing large crystal products of a crystalline product in a fluid bed crystallizer, said fluid bed crystallizer comprising a crystallization vessel and means for mechanically impacting of crystals; and connected to the crystallization vessel (i) a feed line; (ii) an external circulation circuit comprising means for determining properties of the slurry in the external circulation circuit and a heat exchanger; and (iii) a product withdrawal line, wherein—for any specific crystalline product and at any flow rate chosen in the external circulation circuit—the weight percentage of crystals of the crystalline product in the slurry in the external circulation circuit, ECCWPC, is controlled by said means for determining properties of the slurry within a specified and predetermined narrow range having a maximum and minimum value not more apart than at most 25% by weight and falling within the range of from 1 to 50% by weight. Preferably, the crystalline product is ammonium sulphate, and the ECCWPC is controlled within a range of from 3 to 20% by weight, preferably of from 5 to 15% by weight, more preferably of from 8 to 12% by weight. The product obtained may be further subjected to size classification by screening. | 02-04-2010 |
023302000 | Alkali metal and ammonium compounds | 2 |
20160115040 | Method and System for Quickly Extracting Lithium Carbonate from Saline Lake Water - The present invention discloses a method for quickly extracting lithium carbonate from saline lake water and a system for the same. The method comprises: first quick-freezing the saline lake water to obtain lithium-rich brine, then evaporating under reduced pressure to enable lithium carbonate to be rapidly precipitated out. The method has advantages of short process flow and less labor consumption, thereby enabling continuous automatic operation, high energy utilization and environment-friendly. Further, the crystallization rate is several times faster than that of the salt-pan process and the grade of lithium carbonate salt mine obtained can reach 95% or more, therefore the method of the present invention is particularly suitable for industrial production in the remote saline lake region. The system comprises a reduced-pressure evaporation crystallizer, a vacuum-pumping apparatus, a brine preheating apparatus and a brine cooling apparatus, which concentrates the brine by quick-evaporation of the water, promotes lithium carbonate to form non-uniform nucleus, and improves the crystallization efficiency. | 04-28-2016 |
023303000 | Common salt | 1 |
20110214257 | SODIUM CHLORIDE PRODUCTION PROCESS - The present invention pertains to a process for producing sodium chloride comprising the steps of: (i) preparing a brine having a sodium chloride concentration which is higher than the sodium chloride concentration of the eutectic point but lower than the sodium chloride concentration of a saturated brine by dissolving a sodium chloride source in water; (ii) cooling the resulting brine by indirect cooling in a self-cleaning fluidized bed heat exchanger/crystallizer to a temperature lower than 00 C but higher than the eutectic temperature of the resulting brine, thereby forming a slurry comprising sodium chloride dihydrate and a mother liquor; (iii) feeding the sodium chloride dihydrate to a recrystallizer to form sodium chloride and a mother liquor, and (iv) recycling at least part of the mother liquor obtained in step (ii) and/or step (iii) to step (i). | 09-08-2011 |
023304000 | Alkaline earth metal and magnesium compounds | 1 |
20120066868 | METHOD OF PRODUCING NATURALLY PURIFIED SALT PRODUCTS - Methods for producing naturally purified salt products are disclosed. In one embodiment, a method of producing a naturally purified salt product such as magnesium sulfate heptahydrate from a salt mixture is disclosed. In another embodiment, a high purity salt product is produced. In another embodiment, other products that are produced include naturally purified sodium chloride and magnesium chloride. | 03-22-2012 |
023295000 | Solar | 1 |
20080196209 | Method And Apparatus For Refining A Molten Material - A method for the directional solidification of silicon or other materials. A cooled plate is lowered into a silicon melt and an ingot of solid silicon is solidified downwards | 08-21-2008 |
20080295294 | PROCESSING OF FINE SILICON POWDER TO PRODUCE BULK SILICON - A method for using substantial quantities of silicon powders as charge and processing it to produce a high quality silicon ingots suitable for photovoltaic use is disclosed. In a fused silica crucible, silicon feedstock containing more than about 5% by weight silicon powder is charged. The crucible with the charged silicon feedstock is placed into a furnace chamber and a vacuum is drawn to remove air. The vacuum is applied slowly. Then, the furnace chamber is backfilled with argon gas and heated to form molten silicon. Afterward, the molten silicon is solidified and annealed to form a multicrystalline silicon ingot. | 12-04-2008 |
20090049653 | - This invention intends to enable silicon compound to be removed from waste etching solution at a high removal rate and waste etching solution to be recycled without disposing it. The etching solution reproducing apparatus includes: temperature adjusting means for adjusting the temperature of taken out waste etching solution; atomizing means for atomizing waste etching solution adjusted in temperature by the temperature adjusting means; precipitating means for collecting waste etching solution atomized by the atomizing means and precipitating silicon compound in the waste etching solution; and separating means for separating silicon compound precipitated from the waste etching solution by the precipitating means so as to obtain reproduced etching solution. | 02-26-2009 |
20090119882 | Firmly adhering silicon nitride-containing release layer - The invention relates to a slip for producing a durable, firmly adhering release layer on a substrate, comprising a suspension of solid particles, wherein the solid particles comprise 67-95% by weight of silicon nitride and 5-33% by weight of an SiO | 05-14-2009 |
20110138581 | CRYSTALLIZATION METHOD AND CRYSTALLIZATION APPARATUS - A crystallization method includes: actually measuring a particle number of the crystals precipitated from the saturated solution and a concentration of the saturated solution, while cooling the solution according to a cooling temperature profile; calculating an absolute particle number of crystals precipitated from the saturated solution according to a mass balance, based on an actual measurement value of the particle number and an actual measurement value of the concentration; heating the saturated solution when the absolute particle number exceeds a threshold to perform heating control so that the absolute particle number becomes a set value; and cooling the saturated solution again according to a preset cooling temperature profile after controlling to dissolve excessive crystals in the solution so that the absolute particle number returns to the set value. | 06-16-2011 |
20120131766 | Sheet Wafer Defect Mitigation - A method of forming a sheet wafer melts feedstock material in a crucible that is part of a crystal growth furnace, and passes a plurality of filaments through the crucible to form a (un-separated) sheet wafers. A plurality of sheet wafers may be formed in different lanes in the crucible. One or more vision systems is used, during growth, to determine if a sheet wafer has a defective condition. If a defect is detected, then any of a variety of corrective actions may be taken, such as activating a cutting device to remove at least a portion of the sheet wafer, assessing the defect and grading a portion of the sheet wafer (e.g., for sorting based on grade), and/or producing an indicia. In a multiple-lane embodiment, a defect may be attended to in one lane while sheet growth continues in one or more other lanes. | 05-31-2012 |
20120137473 | PROCESS FOR PRODUCTION OF MULTICRYSTALLINE SILICON INGOTS BY INDUCTION METHOD - A process for the production of multicrystalline silicon ingots by the induction method comprises charging a silicon raw material into the melting chamber of a cooled crucible enveloped by an inductor, forming a melt surface, and melting, wherein the mass rate of charging the silicon raw material and the speed of pulling the ingot are set such that provide for the melt surface position below the upper plane of the inductor but not lower than ⅓ of the height thereof and the melt surface is kept at the same level. In doing this the melt surface position is kept at the same level by maintaining one of the output parameters of the inductor feed within a predetermined range. The process provides for casting multicrystalline silicon ingots suitable for solar cell fabrication and it is notable for higher efficiency and lower specific energy consumption. | 06-07-2012 |
20120297580 | METHOD AND DEVICE FOR OBTAINING A MULTICRYSTALLINE SEMICONDUCTOR MATERIAL, IN PARTICULAR SILICON - A device for obtaining multicrystalline silicon, including: at least one crucible, removably housed in a cup-shaped graphite container; a fluid-tight casing, including a fixed bottom half-shell and a vertically mobile top half-shell; a top induction coil, set facing, with interposition of a graphite plate, the crucible, a lateral induction coil and a bottom induction coil vertically mobile for varying the distance from the bottom wall; and means for a.c. electrical supply of the induction coils separately from one another; at least the lateral induction coil includes a plurality of plane turns set on top of one another, and means for selectively short-circuiting, supplying or not supplying the turns, all together or separately one or more at a time and for varying the frequency of supply thereof all together or separately one or more at a time. | 11-29-2012 |
20120311822 | Solute crystallizing apparatus - A solute crystallizing apparatus utilizing a solution having solute and a first solvent. A mixing unit for combining the solution and a second solvent which lowers the solubility of the solute. A pump receives the mixed solute, first solvent and second solvent and outputs the same under a positive pressure. A membrane separator, having a membrane, receives the pressured solute, first solvent and second solvent mixture and produces a slurry of crystals of the solute, the first solvent, and second solvent as the concentrate or retentate. A solution of the solute, the first solvent and second solvent passes through the membrane as permeate. The concentration of the solute in the retentate is greater than the concentration of solute in the permeate. | 12-13-2012 |
20130239370 | Heat Exchanger for a System for Solidification and/or Crystallization of a Semiconductor Material - Heat exchanger ( | 09-19-2013 |
20130247334 | Crucible for Solidifying a Silicon Ingot - The present invention relates to a crucible that can be used for solidifying a silicon ingot from molten silicon, characterized in that same is at least partially coated on the inner surface thereof with at least one layer consisting of a material produced by thermal decomposition of polysilizane(s), said layer having a shear strength greater than 1 Pa and no higher than 500 MPa, and being in the form of a stack of adjoining layers of non-contiguous tiles. The invention also relates to a method for preparing such crucibles. | 09-26-2013 |
20150059129 | PRODUCTION OF HIGH PURITY SALT WITH REDUCED LEVELS OF IMPURITIES - The invention discloses an improvement over the existing process of producing solar salt of high purity from seawater and minimizes the need for downstream purification. More particularly, the invention teaches the practical utility of recrystallization of salt in solar salt pans using seawater itself as the dissolving medium. The resultant recrystallized salt is obtained with a yield up to 80% and with much reduced levels of impurities. Special mention is made of the bromide level which is reduced 7-10 fold. The invention is most ideal for trace impurities which reside in the salt crystal lattice and are difficult to dislodge by conventional methods adopted for salt purification and where conventional recrystallization would be cost ineffective and scalability would pose a problem. The invention can be practiced by solar salt works based on seawater and where spare land is available to set up additional crystallizers required for the purpose of recrystallization. | 03-05-2015 |
023308000 | Melting out | 2 |
20090031535 | SILICON RELEASE COATING, METHOD OF MAKING SAME, AND METHOD OF USING SAME - A method of making a release coating includes the following steps: forming a mixture that includes (a) solid components comprising (i) 20-99% silicon by weight and (ii) 1-80% silicon nitride by weight and (b) a solvent; applying the mixture to an inner portion of a crucible or graphite board adapted to form an ingot or wafer comprising silicon; and annealing the mixture in a nitrogen atmosphere at a temperature ranging from 1000 to 2000° C. The invention may also relate to release coatings and methods of making a silicon ingot or wafer including the use of a release coating. | 02-05-2009 |
20160159649 | METHOD OF RECYCLING COMPOSITE CONTAINER FOR HIGH-PRESSURE GAS - A method of recycling a composite container for a high-pressure gas is carried out so as to recover carbon fibers in a long fiber state, using a recovering apparatus that can separate the inner and outer containers of a composite container for a high-pressure gas such as a hydrogen tank and take carbon fibers out of the outer container without cutting it in order to recycle the composite container, in order to increase the degree of recovery of carbon fibers and improve the efficiency of recycling. | 06-09-2016 |
023313000 | Agglomerating | 2 |
20090031536 | Method for producing porous substances - A porous substance producing method for producing a porous substance; by holding particles for precursors of the porous substance in micelles or inverse micelles kept in a dispersed state in a solvent with a surfactant; by agglomerating the particles of the micelles or inverse micelles to each other; and by baking the agglomerated particles. The method comprises the step of agglomerating the particles of the micelles or inverse micelles to each other by performing a treatment to resolve the dispersed state of the micelles or inverse micelles containing the particles for the precursors, with the surfactant. | 02-05-2009 |
20090271953 | Process for compacting powders - Fluffy powders, such as calcined kaolin clays or air floated clays, can be compacted using a process which comprises applying increasing amounts of pressure to a powder moving through a confinement area. The compacted product has an improved bulk density and improved wet out and slurry incorporation times as compared to the non-compacted starting material feed. | 11-05-2009 |
023293000 | Sulfur | 2 |
20080263832 | Reactor for Mixing and Reacting Two or More Fluids As Well As Transferring Heat Between Said Fluids and a Method for Operating Said Reactor - The present invention relates to a reactor for mixing and reacting two or more fluids as well as transferring heat between said fluids. Said reactor comprises a pressure vessel (g) having at least one inlet and one outlet and which enclose a multi-channel monolithic structure (f), a manifold assembly (b) sealed to one end of said structure where the channel openings are, for feeding fluid to said structure and discharging fluid from said structure, a means (h) sealed to the opposite end of said structure where said manifold assembly is sealed, for changing the direction of fluid flow path 180 degrees when said flow leaves the channels in said structure. Furthermore, the present invention relates to a method for operating said reactor. | 10-30-2008 |
20120110789 | METHOD FOR PREPARING A SUSPENSION - A method for preparing a suspension from a separation process, wherein the suspension is made of a particulate abrasive and a liquid slurrying agent. The method includes the steps of: a) thinning the suspension in a tank with an additional slurrying agent (PEG) without adding additional water, producing a constant volume ratio between the particulate abrasive and the liquid slurrying agent; b) separating the thinned suspension into a liquid and a solid fraction in a centrifugal separator, and c) subsequent refinement or reuse of the separated liquid and solid fractions. | 05-10-2012 |
20130042438 | METHOD FOR PROCESSING SPODUMENE - The invention relates to a method for thermally processing α-spodumene, i.e. lithium aluminum silicate, by which treatment it is transformed into β-spodumene, which is more advantageous for further processing; in the method, concentrate or ore with a grain size of 20-1,000 μm is processed in a fluidized bed reactor, at a temperature of 800-1,000° C., by using an oxygenous gas as the fluidizing gas. | 02-21-2013 |
20110271490 | SYSTEM AND METHOD THAT REMOVES CONTAMINANTS FROM SULFUR - A system and method for removing contaminant from sulfur (or sulphur) to a level that allows re-processed sulfur to reenter a supply chain. The system and method melt contaminated sulfur, filters the molten sulfur, and then dispenses the less contaminated sulfur after filtering it. More specifically, solid contaminated sulfur enters a settling tank, while heated molten sulfur circulates through the system and the settling tank. The circulation of the molten sulfur assists in the melting process of the solid sulfur, allowing the solid sulfur to melt efficiently. In preferred embodiments of the system, the system uses steam jacked sulfur lines and steam tracing to maintain temperatures for melting the solid sulfur and maintaining the molten state of the sulfur circulating through the system. Furthermore, the system comprises a programmable logic controller, which controls motors, pumps, valves, and environment monitoring instruments. | 11-10-2011 |
20130174380 | USE OF HYDROPHILIC ORGANOMODIFIED SILOXANES AS A PROCESSING AID FOR MELT GRANULATION - Use of organomodified polysiloxanes which have at least three different polyether radicals, at least two of these polyether radicals differing by at least 9% by mass in the proportion of ethylene oxide units therein in the total weight of the polyether radical, as a release agent or release agent constituent in melt granulation. | 07-11-2013 |