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8088349 Clean method for preparing layered double hydroxides  
Disclosed is a clean method for preparing layered double hydroxides (LDHs), in which hydroxides of different metals are used as starting materials for production of LDHs by atom-economical...
7928033 Catalyst for reducing mercury, a mercury conversion unit, and an apparatus for measuring total mercury in combustion exhaust gas by using the same  
The present invention relates to a catalyst for reducing mercury, which comprises a reagent comprising any of the sulfites of potassium, sodium, calcium and magnesium, or any of the phosphates...
7887776 Chemical process to produce hydrogen chloride and chloride-free compound potassium sulfate fertilizers or other metal sulfates  
A method is disclosed for production of a sulfate-containing chlorine free salt and anhydrous gaseous HCl from a metal chloride (MClx), oleum and water. MClx and oleum are mixed together with a...
7780941 Potassium magnesium fertilizer  
A process for producing potassium magnesium sulfate, comprising reacting sulfuric acid with potassium chloride and magnesium chloride at a temperature in a range comprised between about 100 and...
7771700 Sorbents for removal of mercury from flue gas cross reference to related applications  
Systems are disclosed for making and using micro-porous particulates at least partially composed of metal sulfides, particularly alkaline earth metal and transition metal sulfides, as sorbents for...
7686963 Magnesium thiosulfate as ozone quencher and scrubber  
In one aspect, ozone is quenched from a water stream, such as a drinking water or wastewater stream being treated with ozone, by contacting the stream with magnesium thiosulfate. In another aspect,...
7575735 Metal oxide and metal fluoride nanostructures and methods of making same  
The present invention includes pure single-crystalline metal oxide and metal fluoride nanostructures, and methods of making same. These nanostructures include nanorods and nanoarrays.
7575734 Process for preparing dispersible sulfate, preferably barium sulfate nanoparticles  
The invention is directed to a process for the manufacture of optionally doped nanoparticulate metal sulfate wherein the metal is selected from polyvalent metals or monovalent transition metals,...
7455823 Process for the preparation of micron/nano sized inorganic material  
The invention discloses methods for making micron/nano meter sized particles of various inorganic materials such as minerals/oxides/sulphides/metals/ceramics at a steadily expanding liquid-liquid...
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...
7288239 Method for producing alkaline earth sulphate nanoparticles  
The invention relates to synthesis of nanoparticles, in particular to methods for producing nanoparticles with networks consisting of Z sulphate (Z=magnesium (Mg), calcium (Ca), strontium (Sr),...
7211235 Method for producing hydrotalcites  
A method is described for the manufacture of hydrotalcites by using at least one compound of a bivalent metal (Component A) and at least one compound of a trivalent metal (Component B), wherein at...
7008606 Process for passivating sulfidic iron-containing rock  
A method is provided for passivating sulfidic iron-containing rock comprising contacting sulfidic iron-containing rock with one or more members of the group consisting of magnesium oxide, magnesium...
7001582 Micronized barium sulfate  
Micronized barium sulfate (BaSO4) and methods for the production and use thereof. The micronized barium sulfate of the invention is particularly suitable for use as an additive or filler for...
6858562 Catalyst for decomposing organic harmful substances and method for decomposing organic halides by use thereof  
A catalyst of a water insoluble vanadyl sulfate or a complex catalyst, in which a specific oxide and a specific sulfate are combined to the water insoluble vanadyl sulfate are excellent not only in...
6692656 Amphoteric magnesium buffers  
A method of using a mixture as an amphoteric buffer is disclosed comprising mixing sulfuric acid, magnesium oxide and/or magnesium hydroxide, and water to form an amphoteric buffer, and applying...
6537962 Composite powder  
The present invention pertains to a composite powder comprising (A) an alkali metal silicate particle having an average particle size of from 1 to 500 μm; and (B) a water-soluble salt particle ...
6478971 Process for removing sulfate from an aqueous salt solution  
A simple, effective, cost-efficient method of precipitating sulfate in an aqueous salt solution and removing the precipitate from the solution. The steps of the method include diluting the solution...
6365122 Process for manufacturing potassium sulfate fertilizer and other metal sulfates  
A new process of preparing potassium sulfate fertilizer and other metal sulfates from the chlorides and other halides of these metals. The process utilizes the discovery that sulfur dioxide or...
6306494 Fine particulate synthetic chalcoalumite compounds, process for their production, and heat insulator and agricultural film containing the fine particulate synthetic chalcoalumite compounds  
Novel, fine particulate synthetic chalcoalumite, process for preparation thereof, and a heat insulating agent and agricultural film containing said fine, particulate synthetic chalcoalumite. The...
6221332 Multiple stream high pressure mixer/reactor  
Enhanced macromixing, mesomixing, and micromixing of multiple discrete reactant streams, particularly for precipitation reactions of low density pumpable fluids, are obtained by controlled...
6214313 High-purity magnesium hydroxide and process for its production  
Magnesium hydroxide of high purity, having a fine particle size suitable for use in flame retardants and other high-end uses, is produced by utilizing flue gas desulfurization system process slurry...
6203769 Process for the treatment of fluoboric electrolyte  
The invention relates to a method for the treatment of fluoboric electrolyte resulting from the processes of electro-extraction of metals such as copper and lead comprising a leaching stage with...
6187277 Method for purifying gases  
A method is provided for removing sulfur dioxide and carbon dioxide out of gases from, for example, the combustion of sulfur containing fossil fuels. The sulfur dioxide and carbon dioxide...
6099814 Method for processing acid effluents  
In the method for the humid treatment of effluents containing a compound selected from the group consisting of H2 SO4, free SO2, SO3-, or SO4= and having a pH lower than 5, the effluents are...
6086842 Recycling of sodium hydroxide and production of gypsum from dry flue gas desulfurization  
The present invention is directed towards a system that makes high quality gypsum from a dry flue gas desulfurization process which utilizes a low temperature regeneration of the carbon adsorbent...
5980856 Synthetic chalcoalumite-type compounds and processes for producing the same  
This invention relates to synthetic chalcoalumite-type compounds represented by formula (1) below: M2+a-x/2 Lix1+ Al43+ (OH)b (An-)c.mH2 O (1) (wherein M2+ represents at least one of the following...
5976511 Ultraviolet rays-absorbing composition and process for producing the same  
The invention provides an ultraviolet rays-absorbing composition having a pearly luster which comprises plate barium sulfate particles having a surface coated with at least one of zinc oxide,...
5861133 Synthetic chalcoalumite compounds and process for producing thereof  
A synthetic chalcoalumite compound represented by the formula (1) (Zna-x2+ Mx2+)Al43+ (OH)b (An-)c.mH2 O (1)wherein M2+ represents at least one of Cu, Ni, Co and Mg; a represents 0.3
5814291 Simplified synthesis of anion intercalated hydrotalcites  
The present invention is one-step method for synthesizing a synthetic anion intercalated hydrotalcite material. The method comprises reacting an aluminum source with a magnesium source in the...
5709730 Hydrometallurgical processing of flue dust  
Electric arc furnace production of recycled steel is plagued by the formation of an iron-depleted, metal-rich electric arc flue dust (EAFD). In the present invention, we recover at least about 85...
5707960 Amorphous sodium silicate-metal sulfate composite powder  
Amorphous sodium silicate-metal sulfate composite powder having water softening power and having small hygroscopicity, and useful as a detergent builder is provided. This amorphous sodium...
5580377 Plate barium sulfate and process for producing the same  
A plate barium sulfate is described, which has a particle size of from 1 to 100 μm or from 5 to 150 μm, wherein neither a sulfide nor a soluble barium salt is detected by an analysis method based o...
5554355 Oxide slurry for industrial process applications  
A method and apparatus for forming a slurry of metal oxide in a mineral or the like (e.g. of magnesium or calcium oxide) and introducing the slurry to an acid neutralization process in a time...
5326548 Fibrous anhydrous magnesium oxysulfate and process for the preparation thereof  
A fibrous anhydrous magnesium oxysulfate having a rational formula of MgSO4.5Mg(OH)2 has an excellent oil absorptivity and appropriate hygroscopicity. The fibrous anhydrous magnesium oxysulfate is...
5324500 Method for processing residues of barium sulfide or strontium sulfide leaching  
A method for treating residues of barium sulfide or strontium sulfide leaching with waste sulfuric acid and hydrochloric acid, which method significantly decreases the amount of residual material...
5312604 Work-up of waste materials from barium or strontium sulfide leaching  
A process for working-up waste materials from barium sulfide or strontium sulfide leaching in which the amount of waste material to be disposed of is substantially decreased.
5281242 Method for recovering magnesium sulfate products from mixtures of epsomite and halite  
A simple, efficient and inexpensive method of purifying magnesium sulfate from mixtures of epsomite and halite. The method allows for the preparation of substantially pure magnesium sulfate...
5262147 Basic composite metal sulfate fiber, process for the production thereof, and composition containing the same  
A novel basic composite metal sulfate fiber, a process for the production thereof, and a resin and/or rubber composition which contains the basic composite metal sulfate fiber and gives a molded...
5262148 Process for preparing barium sulfate  
Barium sulfate having a specific crystal structure and optical characteristics is disclosed. The crystals have a plate-like structure of which the aspect ratio is 5-100 and the ratio of the square...
5246687 Solid-state preparation of high purity barium sulfate  
A novel, solid-state, low-temperature preparation of barium sulfate provides a higher purity material than that obtained by the conventional method of precipitation. The reaction involves heating a...
5246686 Basic aluminum chlorosulfate flocculating agents  
Novel basic aluminum chlorosulfate solutions, having a basicity ranging from 45% to 70% and wherein more than 80% of the SO42- values are complexed, prepared, e.g., by reacting calcium carbonate...
5154752 Suppression of fines during the granulation of ammonium nitrate  
The formation of dust or fines may be suppressed, during the granulation of ammonium nitrate having a nitrogen content of 28% to 34.5%, by a process in which ammonium nitrate is initially...
5082646 Fibrous magnesium oxysulfate of granular form and a method of producing same  
A fibrous magnesium oxysulfate of granular form according to the present invention has an apparent specific gravity of 0.13-0.25, an oil absorption of 250-600 ml/100 g, a fiber diameter of 0.1-2.0...
5021226 Method of producing fibrous magnesium oxysulfate of granular form  
A fibrous magnesium oxysulfate of granular form according to the present invention has an apparent specific gravity of 0.13-0.25, an oil absorption of 260-600 ml/100 g, a fiber diameter of 0.1-2.0...
4990319 Process for producing ammonia and sulfur dioxide  
A process for producing NH3 and SO2 from ammonium sulfate, which comprises (i) reacting ammonium sulfate with a metal oxide or hydroxide at a temperature of not more than 200° C. to form NH3, ...
4980135 Process for separating barium from water-soluble strontium salts  
A process is described for separating barium from barium-containing, water-soluble strontium salts by means of an alkali metal sulfate. The process can be carried out either batch-wise or...
4894093 Process for producing barium sulfate with reactive surface  
Barium sulfate which has a chemically reactive surface is produced by a precipitation of barium ions by means of sulfate ions in an aqueous medium. In order to provide barium sulfate as a filler...
4867961 Method of removing sulphur dioxide from a gaseous stream  
Capture-fixation of SO2 from flue and non-ferrous smelter gases is achieved with the use of MgO aqueous slurry as an absorbing medium. During the absorption, most of the MgO is converted to MgSO4...
4842842 Process for producing α-form gypsum hemihydrate  
Disclosed herein is a method for producing α-form gypsum hemihydrate, comprising heating an aqueous slurry containing gypsum dihydrate and a salt of sulfosuccinic acid as the catalyst for ...
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