Class / Patent application number | Description | Number of patent applications / Date published |
106817000 | Rock, stone, gravel, trass, shell or carbonate containing (e.g., limestone, etc.) | 15 |
20090158970 | CONCRETE COMPOSITIONS OPTIMIZED FOR HIGH WORKABILITY - Concrete compositions have a fine-to-coarse aggregate ratio optimized for decreased viscosity and increased workability. The concrete compositions include at least water, cement, coarse aggregate, and fine aggregate and have a slump of at least 1 inch and a 28-day compressive strength of at least about 1500 psi. Workability is improved by minimizing the viscosity as a function of the aggregate content. To improve workability, the concrete compositions include between 45% and 65% fine aggregate and between 35% and 55% coarse aggregate as a function of total aggregate volume. For relatively low strength concrete (1500-4500 psi), the fine aggregate is 55-65% of the total aggregate volume. For medium strength concrete (4500-8000 psi), the fine aggregate is 50-60% of the total aggregate volume. For high strength concrete (>8000 psi), the fine aggregate is 45-55% of the total aggregate volume. Overall workability can be maintained or improved even if slump is decreased. | 06-25-2009 |
20090249981 | COMPOSITION FOR HYDRAULIC SETTING - The object of the invention is an hydraulic setting composition comprising: (a) an aggregate comprising calcium carbonate; (b) an aggregate comprising silica; (c) alkaline hydroxide; and (d) a suitable quantity of water, characterized in that it contains less than 20% by weight of component (c) and that the sum of the content of cations other than Si and Ca of components a) and b) is less than 10%. | 10-08-2009 |
20100024686 | ROCKS AND AGGREGATE, AND METHODS OF MAKING AND USING THE SAME - Compositions comprising synthetic rock, e.g., aggregate, and methods of producing and using them are provided. The rock, e.g., aggregate, contains CO | 02-04-2010 |
20100326328 | CO2-SEQUESTERING FORMED BUILDING MATERIALS | 12-30-2010 |
20110067605 | Methods and compositions using calcium carbonate - Provided herein are compositions and methods including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Methods for making the compositions and using the compositions are provided. | 03-24-2011 |
20110192325 | Photocatalytic Composites Containing Titanium and Limestone Free From Titanium Dioxide - New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, recovering the product in particular conditions, drying it and calcining it. By operating in presence of sodium, a composite is obtained substantially free from titanium dioxide, containing limestone and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity. | 08-11-2011 |
20110203489 | METHODS AND COMPOSITIONS USING CALCIUM CARBONATE - Provided herein are compositions and methods including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Methods for making the compositions and using the compositions are provided. | 08-25-2011 |
20110239906 | Photocatalytic Composites Containing Titanium and Limestone - New photocatalytic product comprising compounds of titanium integrated with limestone. The product is obtained by reacting limestone with a suitable precursor of titanium dioxide in a basic solution, followed by accurately washing the solid obtained, drying it and calcining it. A composite is obtained containing limestone, titanium dioxide and calcium titanate. The composite thus obtained, used as such or in mixture with other components, has shown an unexpectedly high photocatalytic activity. | 10-06-2011 |
20120174832 | METHOD FOR PRODUCING CEMENT WITH SEPARATION OF CO2 - A method of producing cement clinker including the steps of preheating raw meal comprising calcium carbonate in a preheating stage that is preheated by the exhaust gases of a sintering stage connected downstream in the direction of the gas flow, neutralizing the preheated raw meal, sintering the raw meal into cement clinker in a sintering stage, and cooling the cement clinker from the sintering stage in a cooling stage that cools the cement clinker with a gas. The exhaust gases of the sintering stage are combined with the exhaust gases of the neutralization, and the combined exhaust gases are conducted in an open gas circuit. The CO2 emissions are substantially reduced over known systems with CO separation, and the formation of nitrogen oxides by the combustion of atmospheric nitrogen in the oxidative environment of the sintering stage burner is almost completely prevented. | 07-12-2012 |
20120227634 | USE IN A HYDRAULIC BINDER COMPOSITION OF A DRY-GROUND CALCIUM CARBONATE WITH A COPOLYMER OF (METH)ACRYLIC ACID AND AN ALKOXY OR HYDROXY POLYALKYLENEGLYCOL GROUP - Provided are a method of dry-grinding calcium carbonate in the presence of a grinding aid agent which is a copolymer of (meth)acrylic acid with a monomer containing an alkoxy or hydroxy polyalkyleneglycol group, and a method of producing a hydraulic binder base including dry grinding a calcium carbonate in the presence of the grinding aid. | 09-13-2012 |
20130284073 | PROCESS FOR CARBON DIOXIDE REMOVAL FROM A GAS BY CONTACTING IT WITH A SOLID - A process for reducing the concentration of carbon dioxide in a gas including carbon dioxide and water vapour which process includes contacting the gas with a particulate solid, which solid is a waste material which includes an alkaline earth metal oxide or hydroxide or a mixture thereof and which particulate solid also includes an added alkali metal compound which is an alkali metal hydroxide, carbonate or bicarbonate, or a mixture thereof. | 10-31-2013 |
20140069303 | METHOD FOR PRODUCING CEMENT WITH SEPARATION OF CO2 - A plant for producing cement clinker from calcium carbonate-containing raw meal. A preheating stage preheats the raw meal, which preheating stage is heated by exhaust gases from a following sintering stage. A stage is provided for deacidification and sintering of the raw meal. A cooling stage for the sintered meal is of at least two-stage design and has a gas separation stage for separating exhaust gases from the deacidification and sintering stage which is routed in a first gas circuit from the cement clinker cooling gas. A gas/gas heat exchanger is arranged downstream of the preheating stage in the gas flow direction, through which heat exchanger heat from the combined exhaust gases which leave the preheating stage is transferred into a gas, extracted from the gas for cooling the cement clinker, routed in a second gas circuit, for drying the raw meal in a preceding grinding stage. | 03-13-2014 |
20150307400 | METHODS AND SYSTEMS FOR UTILIZING CARBIDE LIME OR SLAG - Provided herein are methods comprising a) treating a slag solid or carbide lime suspension with an ammonium salt in water to produce an aqueous solution comprising calcium salt, ammonium salt, and solids; b) contacting the aqueous solution with carbon dioxide from an industrial process under one or more precipitation conditions to produce a precipitation material comprising calcium carbonate and a supernatant aqueous solution wherein the precipitation material and the supernatant aqueous solution comprise residual ammonium salt; and c) removing and optionally recovering ammonia and/or ammonium salt using one or more steps of (i) recovering a gas exhaust stream comprising ammonia during the treating and/or the contacting step; (ii) recovering the residual ammonium salt from the supernatant aqueous solution; and (iii) removing and optionally recovering the residual ammonium salt from the precipitation material. | 10-29-2015 |
20160115078 | Process for the Preparation of Cement, Mortars, Concrete Compositions Containing Calcium Carbonate - Based Filler(s) (Pre) - Treated with Ultrafine (UF) Filler(s), Compositions and Cement Products Obtained and Their Applications - Process for the preparation of “High performance”, “HP”, or “FLUID”, or “technical”, cement or mortars or concrete systems or compositions (hereafter for simplicity “cements” or “cements systems” or “cement compositions” or “cements”) having an improved compacity, an improved flowability (and globally speaking a definitely improved “workability”; Product consisting of, or comprises, a blend of coarse (or optionally HP) “calcium carbonate-based filler(s)” pre-blended with at least an UF; CEMENT COMPOSITIONS incorporating the said blend or aqueous composition, namely the said blend of low or medium (or optionally HP) coarse filler(s) treated with at least one UF; USE of the said blend, or aqueous compositions and cement composition. | 04-28-2016 |
20160176760 | PARALLEL-FLOW REGENERATIVE LIME KILNS AND PROCESSES FOR BURNING AND COOLING CARBONATE ROCK IN SAME | 06-23-2016 |