Class / Patent application number | Description | Number of patent applications / Date published |
106819000 | Additive materials for inorganic cements which contain a hydraulic settable material | 13 |
20110253014 | METHOD FOR GRINDING NON-CONDUCTIVE MATERIAL - The present invention relates to a method for grinding a material, for example, cement or cement additive. The method according to the present invention includes at least one step of mechanical grinding the said material in a grinding apparatus, wherein grinding apparatus comprises grinding bodies, wherein the method further includes a step of neutralizing a debris-layer formed at the pre-surface layer of the grinding bodies by using in combination, in any order, simultaneously or sequentially, the following operations: a) applying electric potential to the grinding bodies in the said at least one grinding step, and b) applying a surfactant to the said non-conductive material in the said at least one grinding step, wherein the amount of surfactant is from 50% to 100% of the normative amount. | 10-20-2011 |
20120160135 | Process for the Manufacture of Synthetic Pozzolan - Disclosed is a process for the manufacturing of synthetic pozzolan with desirable color properties. Feed material is dried, crushed, and preheated in a drier crusher. The dry, crushed material is collected and fed to a calciner where it is heated to become a synthetic pozzolan. The synthetic pozzolan is then fed to a cooler where it is maintained for a least a portion of the cooling step in a reducing atmosphere. | 06-28-2012 |
20120234211 | METHOD FOR UPGRADING COMBUSTION ASH - A method of producing enhanced coal combustion ash for use in pozzolanic applications or cement manufacture, in which the enhanced combustion ash has lower mercury content. A slurry is formed of the combustion ash and water and is subjected to froth flotation to form a mercury-enriched ash slurry and a mercury-depleted ash slurry. The product mercury-depleted ash slurry is isolated and may optionally be dried. The combustion ash may be pulverized prior to being used to form the slurry, reducing its mean particle size. The mercury-depleted combustion ash product has reduced levels of mercury and ammonia, and reduced particle size. | 09-20-2012 |
20120272872 | CEMENT KILN DUST TREATMENT SYSTEM AND METHOD - A method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to create a cleaned CKD stream and a metal stream; providing a water soluble alkaline-earth metal polysulfide; combining the heavy metal stream with the water soluble alkaline-earth metal sulfide to create a combined stream; and removing at least a portion of one heavy metal from the combined stream. | 11-01-2012 |
20130092057 | Treatment Method and Treatment Apparatus for Converting Chlorine-Containing Waste into Raw Material for Cement - In the treatment method for converting chlorine-containing waste into raw material for cement, fly ash and desalinated dust are treated, harmful substances such as selenium or heavy metals are removed from the chlorine-containing waste which is the fly ash or desalinated dust by a polymer flocculant or a chelating agent, or by a reducing agent, a polymer flocculant, and electrolytic treatment, and solid components that are generated during the treatment is used as the raw material for cement. | 04-18-2013 |
20130125792 | PRODUCTION OF COAL COMBUSTION PRODUCTS FOR USE IN CEMENTITIOUS MATERIALS - A method and system for producing modified coal combustion products are disclosed. The additives reduce the particle sizes of the coal combustion product and may reduce the amount of un-burned carbon in the coal combustion product, making the modified product useful as an addition to cementitious materials. | 05-23-2013 |
20130192497 | TREATMENT DEVICE AND TREATMENT METHOD FOR CHLORINE BYPASS DUST - In accordance with the present invention, there is provided a treat chlorine bypass dust while preventing increases in chemical cost and concentrations of heavy metals in clinker, and ensuring stability in quality of cement. In a chlorine bypass facility | 08-01-2013 |
20140109801 | Method for processing and utilizing bypass dusts obtained during the production of cement - In a method for processing and utilizing bypass dust obtained during the production of cement, it is proceeded as a) contacting the bypass dust with an aqueous phase and mixing the same to obtain a homogenous slurry, with water-soluble components of the bypass dust being dissolved in the aqueous phase, b) carrying out a solid-liquid separation to separate the solids contained in the slurry so that a brine is remaining, c) separating heavy metals present in the brine and precipitating calcium as poorly soluble calcium salts, e.g. CaCO | 04-24-2014 |
106820000 | Expanding, foaming or porosity producing additive | 1 |
20100132594 | Foamed Cement Compositions and Associated Methods of Use - A method is provided for reducing the density of a well cement composition for cementing in a subterranean formation. The method comprises providing a cement composition that comprises water and a cement, and then adding an additive comprising an anionic foam stabilizer and an anionic foaming agent or a Zwitterionic foam booster. A gas is added to this mixture to reduce the density. Further, foamed cement compositions and additives for foaming and stabilizing a well cement composition are provided. | 06-03-2010 |
106822000 | Wax, tallow, oil, natural resin or higher fatty acid or salt, amide, or ester thereof containing additive (e.g., rosin, tall oil, hydrocarbon oil, etc.) | 1 |
20140299024 | SHELLAC-COATED PARTICLES OF ACTIVE INGREDIENTS WITH CONTROLLED RELEASE PROPERTIES AT HIGH PH-VALUES, PROCESS FOR THEIR MANUFACTURE AND USE THEREOF - Suggested is a novel coated particle of active ingredients with controlled release properties at pH-values from 10 to 14, wherein the active ingredient is selected from one or more construction chemical additives for the control of inorganic binders, characterized in that the coating comprises shellac, a process for its manufacture and the use thereof as an additive for mortars, dry mortars, cement slurries and/or concretes. | 10-09-2014 |
106823000 | Organic material containing additive (e.g., carbohydrate, bituminous material, etc.) | 3 |
20080295741 | Slump Retention in Cementitious Compositions - The present invention relates to dispersants such as superplasticizers for hydratable cementitious compositions, and more particularly to methods for achieving variable degrees of longer slump life in concrete and mortar without loss of stability. This is achieved by using two admixture systems. The first admixture composition has multi-components for achieving initial-slump-enhancement, later-slump-retention, and limiting initial slump. The second admixture composition has the later-slump-enhancing component. Alternatively, conventional water reducers or superplasticizers can be employed initially, followed by the later-slump-enhancing admixture composition. | 12-04-2008 |
20090050026 | TREATMENT OF CONCRETE STRUCTURES TO PROTECT THE CONCRETE AND THE REINFORCING RODS AGAINST THE EFFECTS OF ATMOSPHERIC AGENTS - Treatment of concrete structures designed to protect the concrete and prevent corrosion of the reinforcing rods by external agents, which includes filling of the micropores and cracks with a waterproofing material consisting of a substance designed to fill said pores and cracks, thus preventing the passage of external agents. | 02-26-2009 |
20090241804 | Composition and Its Use for Improving the Processibility of Hydraulically Setting Compositions - The invention relates to a composition comprising at least one plasticizer for a hydraulically setting composition and at least one polyalkylene glycol. The invention also relates to a process that uses the composition for improving the processibility, in particular for extending the processing time, of hydraulically setting compositions. | 10-01-2009 |