cement grinding aids patents

Grinding aids for hydraulic cement. - GRACE W R & CO
Grinding aids for hydraulic cement. - GRACE W R & CO. Title: Grinding aids for hydraulic cement. European Patent Application EP0226379. Kind Code: A2. Abstract: Hydraulic cements such as Portland cement are interground with diesters of a polyol (e.g. alkylene glycol) with a monobasic carboxylic acid (e.g. acetic acid) to enhance the efficiency ...
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CEMENT GRINDING AID COMPOSITION - Dow Global
Grinding aids lower the amount of energy and time needed for grinding by increasing the efficiency of the grinding process. The reduced energy consumption can significantly improve the overall cost efficiency of a cement plant, for instance by reducing the operating costs of the plant, increasing cement production throughput, and/or reducing ...
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Cement grinding aid and set retarder - Westvaco
Additives for use as grinding aids and set retarders in the manufacture of hydraulic cement composed of polyglycerol, preferably a polyglycerol selected from the group of di-, tri-, and tetraglycerol and mixtures thereof, the additive being used either alone or in combination with at least one of a water-soluble glycol, a water-soluble hydroxy-alkyl amine, a water-soluble salt of
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Cement grinding aid compositions - Nalco Chemical
Cement grinding aids have been used for many years, and it is estimated that U.S. consumption of such chemicals is currently 30-40 million pounds per year. Most commercial grinding aids are either waste streams of ethylene glycol or diethylene glycol, or a combination of a glycol and an amine acetate (monoethanolamine, diethanol and triethanol ...
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The Effect on the Performance of Cement Grinding Aid ...
2017-3-26 · Keywords: Cement grinding aid, Fineness, Compressive strength, Size distribution. Abstract. In this paper, By choosing four kinds of grinding aids better one-component, The grinding aid of cement grinding aids is determined by orthogonal optimization. By adding different inorganic reinforcing components, Developed a cement grinding
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Comprehensive understanding of grinding aids
2016-10-2 · the industrial grinding of cement, even without the use of grinding aids. Therefore it can be assumed that the surfaces of the majority of commercial clinkers are predominantly or even completely hy - droxylated. This is also important because it as-sists the grinding, in other words water is a weak grinding aid. The chemical reaction of oxide ions
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CEMENT GRINDING AID - SIKA TECHNOLOGY AG
Such cement grinding aids are typically selected from the class comprising glycols such as alkylene glycols, amines or amino alcohols. For example, U.S. Pat. No. 5,084,103 describes trialkanolamines, such as triisopropanolamine (TIPA) or N,N-bis(2-hydroxyethyl)-N-(2-hydroxypropyl)amine and tris(2-hydroxybutyl)amine as grinding aids for clinkers.
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Characterization of various cement grinding aids and their ...
2009-5-1 · The evaluation of the grinding aids (GA) was carried out by interground 0.015% of each grinding aid with gypsum and a Portland cement clinker (95% clinker, 5% gypsum), in a 1 kg laboratory rotating ball mill, using steel balls as grinding medium, to a Blaine surface area of about 4000 cm 2 /g (according to the Blaine air permeability method) .The composition of the clinker
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Cement grinding aids - GCPAT
2022-2-8 · TAVERO® grinding aids make life easier for busy cement producers. Our grinding aids are designed to increase mill output without increasing costs, while saving energy and reducing CO 2 emissions. Improved cement flowability
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Grinding Aid | Sanghavi Group
Benefits of using Cement Grinding Aids. Reduce Coating and Reduce Pack-set. Narrower Cement PSD. Increases Mill Output, by 5 - 30%. Increase Clinker Substitution, by 2-8%. Increases 1 day strength, 10-40% or say 2 - 6 MPa.
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Cement Grinding Aid - SIKA TECHNOLOGY AG
Such cement grinding aids are typically selected from the class comprising glycols such as alkylene glycols, amines or amino alcohols. For example, U.S. Pat. No. 5,084,103 describes trialkanolamines, such as triisopropanolamine (TIPA) or N,N-bis(2-hydroxyethyl)-N-(2-hydroxypropyl)amine and tris(2-hydroxybutyl)amine as grinding aids for clinkers.
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CEMENT GRINDING AID COMPOSITION - Dow Global
Grinding aids lower the amount of energy and time needed for grinding by increasing the efficiency of the grinding process. The reduced energy consumption can significantly improve the overall cost efficiency of a cement plant, for instance by reducing the operating costs of the plant, increasing cement production throughput, and/or reducing ...
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CEMENT GRINDING AID AND PACK SET INHIBITOR -
Additive compositions for use as grinding aids and pack set inhibitors in the manufacture of hydraulic cement composed of a water-soluble polyol, particularly a glycol, and a water-soluble salt of an aliphatic acid having no more than three carbons, said additive compositions being used either alone or in combination with water-soluble salts of a sulfonated lignin, a water-soluble
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Cement grinding aid compositions - Nalco Chemical
Cement grinding aids have been used for many years, and it is estimated that U.S. consumption of such chemicals is currently 30-40 million pounds per year. Most commercial grinding aids are either waste streams of ethylene glycol or diethylene glycol, or a combination of a glycol and an amine acetate (monoethanolamine, diethanol and triethanol ...
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MINERAL GRINDING AIDS - FRANK G. SERAFIN
A novel grinding aid was prepared by mixing 34 parts by weight of a 50--50 mixture of phenol and cresol with 65.9 parts by weight of a 50--50 mixture of morpholine and triethanolamine. The grinding efficiency was determined on Type I Portland cement ground in a laboratory mill for 4941 revolutions at 230° F.
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US Patent for Grinding aids for X-ray fluorescence ...
1999-8-31 · The invention relates to grinding aids for X-ray fluorescence analysis which consist of a polysaccharide binder, sugar or sugar alcohols as filler and of a lubricant. The grinding aids according to the invention are easy to use and provide very reproducible analytical data.
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The Effect on the Performance of Cement Grinding Aid ...
2017-3-26 · Keywords: Cement grinding aid, Fineness, Compressive strength, Size distribution. Abstract. In this paper, By choosing four kinds of grinding aids better one-component, The grinding aid of cement grinding aids is determined by orthogonal optimization. By adding different inorganic reinforcing components, Developed a cement grinding
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Characterization of various cement grinding aids and their ...
2009-5-1 · The evaluation of the grinding aids (GA) was carried out by interground 0.015% of each grinding aid with gypsum and a Portland cement clinker (95% clinker, 5% gypsum), in a 1 kg laboratory rotating ball mill, using steel balls as grinding medium, to a Blaine surface area of about 4000 cm 2 /g (according to the Blaine air permeability method) .The composition of the clinker
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Grinding Aid | Sanghavi Group
Benefits of using Cement Grinding Aids. Reduce Coating and Reduce Pack-set. Narrower Cement PSD. Increases Mill Output, by 5 - 30%. Increase Clinker Substitution, by 2-8%. Increases 1 day strength, 10-40% or say 2 - 6 MPa. Increases 28 day strength, 5-20% or say 2 - 10 MPa. Modifies Setting Time (Accelerate/Retard), by 15-120 minutes.
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Progress with grinding aids for VRMs - Global Cement
2018-6-1 · The effect of grinding aids on the comminution of cement is based on the dispersion of fine particles. It is a misunderstanding that grinding aids for vertical roller mills (VRMs) should stabilise the material bed between the rollers and the table by adhesive forces between the particles. Grinding aids reduce the polarity of the cleaved surface ...
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Building cement composite liquid grinding aid - Patent CN ...
Building cement composite liquid grinding aid - Patent CN-104743955-A - PubChem.
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Development history and evolution of cement grinding
2018-11-23 · Development history and evolution of cement grinding aids. Since the 1930s, cement grinding aids have been used in the cement industry. The earliest patents of the 1930s tested and used powdered mixtures of mineral oil, animal oil and petroleum cracking residues to improve the water resistance of cement products and improve the high early strength and
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Cement grinding aids prepared with waste antifreeze ...
2015-9-29 · Patents US 2018/0141863 A1. Cement grinding aids prepared with waste antifreeze (22) 29.09.2015 (43) 24.05.2018 (57) It discloses cement grinding aids prepared with waste anti-freeze which comprises the following components in parts by weight: 20-75 parts of pretreated waste antifreeze, 5-40 parts of alkanolamine, 1-5 parts of acid solution, 3 ...
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Cement grinding aids - GCPAT
2022-2-8 · TAVERO® grinding aids make life easier for busy cement producers. Our grinding aids are designed to increase mill output without increasing costs, while saving energy and reducing CO 2 emissions. Improved cement flowability reduces the effort for handling and transporting cement. Improve grinding efficiency.
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Grinding aids for high performance cements
2018-3-29 · Grinding aids for high performance cements Grinding aids are organic compounds that are added to the mill during cement grinding. Their main purpose is to reduce the energy required to grind the clinker into a given fineness. In addition, some products (usually referred to as performance enhancers) provide positive effect on cement hydration ...
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Analysis of Cement Superplasticizers and Grinding Aids A ...
2012-3-27 · Grinding aids are common cement additives, and can consist of several different types of compounds such as alkanolamines, glycols or phenolic compounds. These are used to increase the throughput of cement clinker in the grinding mill. Generally, the concentration range of grinding aids added is from 50 to 500 ppm. After the grinding
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Grinding Aids - jasind
2021-12-29 · Grinding aids have been traditionally used to improve the efficiency of the cement maturation process which is considered as one of the most energy consuming processes in cement production (60 - 70% of the total electricity consumed in the plant). They are usually added at the entrance of the mill together with the feed.
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Determination of grinding aids in portland cement by ...
1998-9-1 · Introduction. Energy utilization during the grinding process of Portland cement clinker and gypsum can be significantly improved by adding polar organic compounds (referred to as grinding aids) in concentrations less than 500 ppm .Because of their highly polar nature, grinding aid compounds preferentially adsorb on surfaces formed by the fracture of electrovalent bonds
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Cement Grinding Aids | Sanghavi Group
Cement Grinding Aids. Principal application is to increase output (tons/hour) at constant cement fineness (cm 2 /g) Introduced at low dosage, usually. between 0.01 and 0.10% (most preferably at 0.01 – 0. 1%) Influence on cement quality is usually small (or) not the main aim of its application.
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Progress with grinding aids for VRMs - Global Cement
2018-6-1 · The effect of grinding aids on the comminution of cement is based on the dispersion of fine particles. It is a misunderstanding that grinding aids for vertical roller mills (VRMs) should stabilise the material bed between the rollers and the table by adhesive forces between the particles. Grinding aids reduce the polarity of the cleaved surface ...
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