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| Number | Title | Issue Date |
| 7371357 | Process for removal of pollutants A process for the removal of pollutants from a combustion process and, more particularly, a process for removing pollutants such as carbon dioxide, mercury, sulphur dioxide, nitrogen compounds and oxygen compounds from a combustion process. The process includes the ... | 05/13/2008 |
| 7288201 | Methods for removing moisture from hydrogen halides A composition comprising a magnesium halide coated macroporous carbonaceous substrate is provided for effecting moisture removal from a hydrogen halide fluid. Moisture removal is effected by intimately contacting the hydrogen halide fluid with the magnesium halide c... | 10/30/2007 |
| 6849199 | Snow and ice-melting granules and method for preparing same Snow and ice-melting granules prepared from compacted blends of salts of alkali and/or alkaline earth metals and a method for preparing such granules, are provided. The inventive granules have improved mechanical properties and, as such, are not readily reduced to a... | 02/01/2005 |
| 6692710 | Method for obtaining magnesium by leaching a laterite material The present invention provides methods for the isolation and production of magnesium products from leaching of laterite material with acid. A magnesium compound is formed by downstream treatment of a leach stream after at least one of nickel or cobalt hav... | 02/17/2004 |
| 6524546 | Process for making calcium chlorides A new process for producing calcium chloride and other metal halides from the carbonates, bicarbonates, oxides of these metals. The process utilizes the discovery that hydrogen halides, when used in a true or conventional fluidizing medium in shallow beds... | 02/25/2003 |
| 6482366 | Calcination using liquid metal heat exchange fluid An apparatus (10) for calcining a material comprises a calcination vessel (10) which houses a heat exchanger (12). The heat exchanger (12) is arranged to transfer heat to the material from a liquid metal heat exchange fluid arranged to flow through the he... | 11/19/2002 |
| 6423292 | Anhydrous magnesium chloride preparation process Anhydrous MgCl2 is prepared by a) dissolving magnesite in a starting melt of MgCl2 --CeCl3 forming MgCl2 +CeOCl+CO2.uparw., b) and converting the CeOCl back to CeCl3 by chlorination with Cl... | 07/23/2002 |
| 6296790 | Method of producing magnesium chloride granules A method of producing magnesium chloride granules with a particle size in the range from 0.4 to 3.0 mm suitable for fluidization, air drying and chlorinating to anhydrous state, by preparing a feed solution of MgCl2 having a 30-55% by weight of... | 10/02/2001 |
| 6231822 | Recovering chloride and sulfate compounds from spent potliner A method of recovering chloride and sulfate salts from spent potliner using acid digestion.... | 05/15/2001 |
| 6143270 | Anhydrous magnesium chloride Anhydrous magnesium chloride is prepared by a process in which hydrated magnesium chloride (10) is mixed in a vessel (11) with ethylene glycol (12). The mixture (13) is dehydrated in distillation columns (14, 15 and 16) with the dehydrated ethylene glycol... | 11/07/2000 |
| 6042794 | Process for producing anhydrous MgCl2 A process for producing anhydrous magnesium chloride comprising steps of selective calcination of Mg-containing minerals, selective leaching of magnesium, separation of insoluble impurities, precipitation of magnesium chloride hexammoniate and thermal dec... | 03/28/2000 |
| 5866088 | Process for preparing anhydrous magnesium halide solution and process for preparing solid titanium catalyst component for olefin polymerization Disclosed is a process for preparing an anhydrous magnesium halide solution, comprising a step of distilling water off from an oxygen-containing organic solvent solution of hydrous magnesium halide containing at least calcium as an impurity, to prepare an... | 02/02/1999 |
| 5607655 | Olefin polymerization catalyst and precursor therefor A generally dipyramidal-shaped catalyst precursor is prepared by dissolving magnesium dichloride and a suitable alcohol in a suitable solvent and then cooling to obtain a precipitate of the desired shape. The use of the precursor to prepare catalysts and ... | 03/04/1997 |
| 5565080 | Preparation of anhydrous magnesium chloride-containing melts from hydrated magnesium chloride In accordance with the present invention, there is now provided a process for the production an anhydrous magnesium chloride-containing melt or electrolyte containing very low levels of MgO, typically less than 0.2% by weight MgO, directly from hydrated m... | 10/15/1996 |
| 5556820 | Catalyst component for olefin polymerization and process for producing polyolefins A solid product as a catalyst component for an olefin polymerization catalyst is obtained by the reaction of metallic magnesium, an alcohol, and a halogen in an amount ranging from 0.019 to 0.06 gram-atom per one mole of metallic magnesium. Alternatively,... | 09/17/1996 |
| 5514359 | Process for making anhydrous magnesium chloride In a process for producing anhydrous magnesium chloride, the following combination of steps: drying impure salt containing hydrated magnesium chloride; establishing a solution of the hydrated magnesium chloride; removing insoluble impurities; reacting the... | 05/07/1996 |
| 5455018 | Magnesium chloride particulates having unique morphology and olefin polymerization catalysts supported thereon Crystalline MgCl2 particulates, exhibiting the morphology of substantially regular polyhedra having an even number of from 10 to 18 face surfaces, are well suited as support substrate for olefin polymerization catalysts.... | 10/03/1995 |
| 5277889 | Method for depositing pure metal halide compositions Metal halide compositions of enhanced purity are produced by vapor phase deposition via reactions involving organometallic starting materials in a process wherein a carbon getter is provided in the reaction zone and/or adjacent the developing metal halide... | 01/11/1994 |
| 5212133 | Magnesium chloride particles with a truncated structure, catalytic component supported on these particles, polyolefins obtained by employing this catalytic component, procedures for manufacturing these products Porous particles of MgCl2 which have essentially the shape of two truncated right cones connected by their larger bases, which truncated cones are incurved towards the axis of symmetry perpendicular to the bases, at the intersection of the enve... | 05/18/1993 |
| 5212132 | Magnesium chloride particles with a polyhedral structure, catalytic components supported on these particles, resultant catalyst systems, processes for fabricating these products, and polyolefins obtained from these catalytic components Porous particles of MgCl2 having the form of essentially regular polyhedrons with six or eight faces in which the paired symmetrically opposite faces are essentially parallel, two of which faces are large and elongated and form the top face and... | 05/18/1993 |
| 5120514 | Process for production of magnesium chloride Process for production of magnesium chloride with sufficient purity for the production of magnesium metal, by leaching a magnesium containing raw material in hydrochloric acid. It is essential to keep the ratio between acid soluble iron and nickel greater... | 06/09/1992 |
| 5112584 | Method for production of magnesium chloride Method for production of magnesium chloride, to be used for production of magnesium, by leaching of magnesite in hydrochloric acid. A two-stage leaching process is used where in a first reactor magnesite lumps are dissolved in hydrochloric acid. The magne... | 05/12/1992 |
| 5089094 | Process for the electrolytic production of magnesium In a process for the electrolytic production of magnesium by the molten salt electrolysis of magnesium chloride using a molten salt cell bath comprised mainly of one or more salts selected from alkali metal chlorides and alkaline earth metal chlorides, th... | 02/18/1992 |
| 5061470 | Silane production from hydridomagnesium chloride Improved processes for the production of silane. Hydridomagnesium chloride and trichlorosilane are reacted in an ether solvent to co-produce silane and magnesium chloride. Recycle schemes are presented for the recovery of magnesium values.... | 10/29/1991 |
| 4981674 | Production of anhydrous magnesium chloride A process for the preparation of anhydrous magnesium chloride containing acceptable amounts of MgO suitable for use in the electrolytic production of magnesium metal comprises the steps of feeding spray-dried magnesium chloride powder, or a magnesite or m... | 01/01/1991 |
| 4957722 | Production of partially calcined carbonaceous reductant using steam A process for producing chlorides by the chlorination of a material selected from the group consisting of aluminous materials and metal and metalloid oxides in the presence of a reductant. The method comprises calcining a carbonaceous material with added ... | 09/18/1990 |
| 4943426 | Method for regulating reaction temperature A method for regulating the temperature at which two or more substances combine to form end product in the reactor, at least one of said substances produced from two or more reactants in the reactor, said method comprising: combining at least some of the ... | 07/24/1990 |
| 4851208 | Process for the manufacture of spherical particles of metal compounds of group II of the periodic table A process for the manufacture of substantially spherical particles of at least one metal compound of Group II of the Periodic Table, comprising dissolving such compound in a solvent therefor to form a solution and introducing the solution into a non-solve... | 07/25/1989 |
| 4650778 | Metal halide vaporization into diluents Metal halide particles useful, among other things, as olefin polymerization catalyst precursors and catalyst supports are prepared by vaporizing the metal halide and then condensing it in the presence of a diluent.... | 03/17/1987 |
| 4563339 | Process for the preparation of magnesium chloride for use as an electrolyte in electrolytic production of magnesium metal In electrolytic production of magnesium metal the concentration of magnesium chloride in the bath is required to be replenished periodically or continuously. This magnesium chloride should be anhydrous and of certain specifications. This invention provide... | 01/07/1986 |
| 4532313 | Method for preparing an improved catalyst support, Ziegler-Natta catalyst utilizing said support and polymerization of 1-olefins utilizing said catalyst Disclosed is a transition metal component of a Ziegler-Natta catalyst which is composed of a titanium halide deposited on an essentially anhydrous magnesium chloride support. An improved support is prepared by contacting a hydrocarbon solution of magnesiu... | 07/30/1985 |
| 4474703 | Grignard reagents and processes for making and using them An organometallic halide having the formula: wherein aࣘ0.45, bࣘ0.15, and cࣘ0.30, X is a halogen, R is a hydrocarbon radical, and M is a metal selected from the group consisting of magnesium, zinc, beryllium, and calcium is prepared by a continuous d... | 10/02/1984 |
| 4401641 | Process for preparing catalyst carrier of magnesium chloride A new crystalline form (beta form) of MgCl2 is disclosed, as are methods for obtaining it by reaction of SOCl2 with hydrated MgCl2 at a temperature comprised between room temperature and the boiling point of SOCl2. | 08/30/1983 |
| 4382019 | Purified catalyst support This invention relates to pretreating the support material for a polymerization catalyst comprising magnesium chloride with an active hydrogen compound such as an organic acid phosphate or a phenol in order to transform substantially elemental magnesium a... | 05/03/1983 |
| 4366140 | Anhydrous magnesium chloride from grignard reagents An organometallic halide having the formula: wherein a.congruent.0.45, b.congruent.0.15, and c.congruent.0.30, X is a halogen, R is a hydrocarbon radical, and M is a metal selected from the group consisting of magnesium, zinc, beryllium, and calcium is prepare... | 12/28/1982 |
| 4302433 | Process for producing anhydrous magnesium chloride and suitable apparatus Substantially anhydrous magnesium chloride is prepared through the chlorination of a hydrated magnesium chloride by melting the hydrated chloride, feeding that molten material to a bed of carbonaceous material so that it flows downwardly therethrough and ... | 11/24/1981 |
| 4269816 | Preparation of anhydrous magnesium chloride The invention relates to a process for the preparation of anhydrous magnesium chloride from magnesium carbonate preferably magnesium carbonate ores such as magnesite. The process comprises reacting solid magnesium carbonate pieces preferably screened ore ... | 05/26/1981 |
| 4248839 | Chlorination of impure magnesium chloride melt Magnesium oxide is chlorinated in molten impure magnesium chlorine with chlorine gas by adding ferrous chloride to magnesium chloride brine, drying the brine, adding a mixture of calcined petroleum coke and charcoal to the dried brine, melting the product... | 02/03/1981 |
| 4248838 | Preparation of useful MgCl2. solution with subsequent recovery of KCl from carnallite This invention outlines a process to beneficiate carnallite ores in such a way as to obtain anhydrous MgCl2 of sufficient purity to be used as feed for an electrolysis cell producing magnesium metal. Commercially acceptable potassium chloride a... | 02/03/1981 |
| 4228144 | Process for the preparation of anhydrous magnesium chloride having a high degree of purity Anhydrous magnesium chloride containing substantially no magnesium oxide is produced by a process comprising reacting magnesium chloride in the form of its hexahydrate with ammonia in the presence of ammonium chloride in an aqueous media; separating the r... | 10/14/1980 |
