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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...
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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...
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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...
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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...
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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...
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6423292 |
Anhydrous magnesium chloride preparation process
Anhydrous MgCl 2 is prepared by a) dissolving magnesite in a starting melt of MgCl 2 —CeCl 3 forming MgCl 2 +CeOCl+CO 2 ↑, b) and converting the CeOCl back to CeCl 3 by chlorination with Cl...
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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...
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6231822 |
Recovering chloride and sulfate compounds from spent potliner
A method of recovering chloride and sulfate salts from spent potliner using acid digestion.
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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...
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6042794 |
Process for producing anhydrous MgCl.sub.2
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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...
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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...
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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,...
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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...
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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...
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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...
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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 MgCl 2 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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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4474703 |
Grignard reagents and processes for making and using them
An organometallic halide having the formula: (RMX) (MX 2 ) a (MR 2 ) b (MH 2 ) c wherein a≤0.45, b≤0.15, and c≤0.30, X is a halogen, R is a hydrocarbon radical, and M is a metal selected...
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4401641 |
Process for preparing catalyst carrier of magnesium chloride
A new crystalline form (beta form) of MgCl 2 is disclosed, as are methods for obtaining it by reaction of SOCl 2 with hydrated MgCl 2 at a temperature comprised between room temperature and the...
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4366140 |
Anhydrous magnesium chloride from grignard reagents
An organometallic halide having the formula: (RMX)(MX 2 ) a (MR 2 ) b (MH 2 ) c wherein a≅0.45, b≅0.15, and c≅0.30, X is a halogen, R is a hydrocarbon radical, and M is a metal selected...
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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...
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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...
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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...
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4248838 |
Preparation of useful MgCl.sub.2. 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 MgCl 2 of sufficient purity to be used as feed for an electrolysis cell producing magnesium...
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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...
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4201758 |
Boron removal from ethylene glycol-magnesium chloride solutions
A method for removing boric acid and salts therefrom from ethylene glycol-magnesium chloride solutions which contain at least 100 ppm of boron which comprises reducing the pH of such solutions...
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4195071 |
Polyethers to obtain anhydrous magnesium chloride
In a process of producing anhydrous magnesium chloride of the type comprising: A. Mixing together a magnesium chloride hydrate, said hydrate containing minor amounts of water-soluble sulfate and...
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4195070 |
Preparation of a MgCl.sub.2 solution for Nalco's MgCl.sub.2 process from MgSO.sub.4 and other MgSO.sub.4 salts
A method of beneficiating a mixed salt mineral ore containing potassium and magnesium sulfates and/or their hydrates which allows the recovery of anhydrous magnesium chloride and the simultaneous...
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4105747 |
Method for dehydrating metal chlorides
A hydrated metal salt is dehydrated to its anhydrous form by dissolving the metal salt hydrate in an organic solvent; and contacting the solvent solution of metal salt hydrate with a molecular...
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4085198 |
Hydrochlorination of spray dried magnesium chloride
Hydrous magnesium chloride in the form of spray dried particulate material of relatively high density is predried, initially using a dry gas at elevated temperature and for a period of time...
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4083943 |
Production of magnesium chloride
A molten mixture containing magnesium oxide, magnesium chloride and a reducing agent is chlorinated in a furnace having a refractory lining, at least a portion of which adjacent the surface of the...
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4076602 |
Method of producing magnesium metal and chlorine from MgCl.sub.2 containing brine
A method of producing magnesium and chlorine including the steps of injecting concentrated magnesium chloride containing brine into a hot gas spray drier wherein most of the water is evaporated to...
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T964002 |
Method to purify magnesium chloride to produce a flux for molten magnesium
a method to remove organic impurities, such as Grignard reagents, from an impure magnesium chloride by heating the magnesium chloride in a vacuum at a temperature of up to about 500° C, and...
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3983224 |
Anhydrous magnesium chloride process
Anhydrous magnesium chloride may be prepared for magnesium chloride hydrate by the following sequence of process steps: A. mixing together a magnesium chloride hydrate said hydrate containing...
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3980536 |
Process for producing magnesium metal from magnesium chloride brines
Magnesium metal is produced by electrolysis of a molten magnesium chloride electrolyte containing fluoride ions, the electrolyte being derived from holding pond brines which are partially...
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3975283 |
High bulk density magnesium chloride and method for making same
A gelling agent is added to a brine containing magnesium chloride to convert the brine into a gel which is spray dried to produce dried magnesium chloride comprising substantially solid discrete...
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3966888 |
Anhydrous magnesium chloride using ethylene glycol and ammonia
Anhydrous magnesium chloride may be prepared from magnesium chloride hydrates by the following sequence of processing steps: 1. Dissolving the magnesium chloride hydrate in ethylene glycol to form...
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3962408 |
Dehydration of magnesium chloride
A method for dehydrating magnesium chloride hydrates or brines by complexing with amine hydrochlorides is described. Magnesium chloride hydrate or brine is reacted with an amine hydrochloride to...
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3953574 |
Process for purifying molten magnesium chloride
Spray-dried magnesium chloride salt containing minor amounts of impurities in the form of oxygen containing compounds including metal oxides and in particular particulate magnesium oxide, hydroxyl...
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3779870 |
RECOVERY OF ANHYDROUS HCl GAS BY EXTRACTIVE DISTILLATION WITH A HALIDE SALT
A process for the recovery of substantially anhydrous HCl gas from hydrous HCl gas employing extraction distillation in the presence of one or more dissolved salts, characterized by A. directly...
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