The present invention relates to a cement grinding aid and a production technology thereof, particularly to a cement grinding aid used in cement manufacture. The existing grinding aid has the defects of single variety, high price and instable quality; furthermore, the existing grinding aid has larger difference with developed countries; therefore, the …
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The article investigates the influence of triethanolamine and ethylene glycol as grinding aids on the properties of cement and its compatibility with acrylate-based superplasticizer. It shows that …
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The invention discloses a method for identifying components of cement grinding aids. The method includes steps of firstly, loading the cement grinding aids into dialysis bags and dialyzing the cement grinding aids so as to remove small molecular substances; secondly, measuring mortar water-reducing rates and solid contents of residual liquor in the …
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A cement grinding aid containing a combination of polymer A and known cement grinding aids is also disclosed. ... Coal Industry Patents Ltd: Cement compositions JPH02311339A (en) * : : Kao Corp: Auxiliary agent for wet crushing of cement
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R.K. Mishra et al., Understanding the Effectiveness of Polycarboxylates as Grinding Aids, Special Publication 288 (2012) 1-15. [13] Y. Lim, Use of Chemical Additive for Production of Portland Cement Based Binder with Less CO2. [14] M. Weibel, R.K. Mishra, Comprehensive understanding of grinding aids, ZKG international 6 (2014). …
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The use of an aqueous composition comprising at least one polymer A of the formula (I) as a cement grinding agent ** Formula ** wherein, M> = each independently H +, an alkali metal ion, an ion of alkaline earth metal, a divalent or trivalent metal ion, an ammonium ion or an organic ammonium group, R> = each R independently of one another, is hydrogen …
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New patent-pending solution to reach unequalled cement performance in specific process configurations: ... CEMENT GRINDING AIDS. Cost-effective solutions developed considering process and materials …
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Grinding aids, first introduced into cement manufacturing in 1930 [], are surface-active substances that facilitate particle comminution during the milling process.In the production of Portland cement, …
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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 …
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Afterward, 17 laboratory-scale grinding tests were performed utilizing S-OPC cement and four grinding aids at four different doses of 0.02%, 0.05%, 0.08% and 0.11 %. The results indicated that the ...
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Powdered iron sulphate is the most frequently used chromium-reducing agent for cement, followed by tin sulphate and several liquid technologies. This article reviews currently …
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Compositions and methods for increasing grinding efficiency of cement, cement clinker, raw materials for cement, and other inorganic particles. Use of biomass-derived polyols such as diols, ls, or mixtures thereof, optionally with a conventional grinding aid, cement quality improver, and/or hexavalent chromium reducer, are …
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The present invention discloses a grinding aid for cement, which is composed of 70 to 80% of triethanolamine and 20 to 30% of mother liquid according to weight percentage, wherein the mother liquid is mainly prepared from alkylpolyglycoside, sodium humate, lignosulphonate, sodium dodecylbenzene sulfonate, fatty alcohol-polyoxyethylene ether, …
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The present invention relates to a kind of method with talcum or molasses as cement grinding aid, the talcum volume is 0.1～1.0% of a cement clinker, and the molasses volume is 0.01～0.1% of a cement clinker weight; Talcum is a natural mineral, molasses are sugar waste, more than two kinds of material values cheap, ample supply and …
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An atomizing device for cement grinding aids includes a tank and an atomizing nozzle, wherein the tank is cylindrical and is provided with a handle, the top of the tank is provided with the atomizing nozzle having a liquid inlet and a liquid outlet, the liquid inlet passes through the top of the tank and is communicated with the inner part of the tank, the liquid …
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Mirip dengan cement grinding aids, efisiensi proses penggilingan bahan baku semen juga akan mempengaruhi output dari raw meal. Cement Raw Meal Grinding Aid (RM-GA) berfungsi untuk memperbaiki luas permukaan spesifik dan grind-ability indeks dari material yang digiling. Hal ini berkaitan dengan kemampuan aditif tersebut untuk mengurangi ...
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Grinding aids (GAs) are polar chemicals introduced in cement mills in either liquid or powder form to improve on mill grindability efficiency.
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The invention patent relates to an enhanced cement composite grinding aid, pertaining to a cement additive. The enhanced cement composite grinding aid has the following main ingredients in percentages by weight: 45 percent to 90 percent of diethanol isopropanolamine, 10 percent to 30 percent of molasses, 5 percent to 20 percent of …
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The invention discloses a Portland cement grinding aid being composed of following components, by weight: 100 parts of triethanolamine, 5-7 parts of carboxymethyl cellulose and 0.1-0.3 parts of sodium hydroxide. The Portland cement grinding aid, compared with a conventional grinding aid, is significantly reduced in grinding time and energy …
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The present disclosure belongs to the technical field of preparation of functional materials, and in particular relates to a grinding aid for cement and a preparation method therefor.
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Grinding aids (GAs), also called grinding additives are introduced in liquid or solid form in the ball mill or vertical cement mills during grinding because of their anticipated merits. They can be divided into amines and their salts, polyalcohols, lignosulfonates, fatty acids, and fatty acid salts based on their chemical makeup [ 1 ].
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The effect of grinding aids on the fine grinding of limestone, quartz and Portland cement clinker Powder Technol., 67 ( 3 ) ( 1991 ), pp. 277 - 286 View PDF View article View in Scopus Google Scholar
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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 …
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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 …
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The invention discloses a powdered cement grinding aid fortifier, and belongs to the technical field of cement manufacturing. The fortifier comprises the following components in parts by weight: 70-80 parts of anhydrous sodium sulfate, 6-10 parts of sodium acetate, 4-8 parts of sodium silicate, and 1-20 parts of fly ash. With the adoption of the fortifier, the …
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The cement grinding aid of the present invention that embodiment two is made with based on the grinding aid one of trolamine and spent pulping liquor, based on the grinding aid two of trolamine all by the consumption of 250 gram/ton cement, carry out cement grinding under the same conditions respectively, with grind the cement fine powder …
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CEGA's expertise covers the cement engineering but bases particularly in cement additives for enhanced grinding, increasing cement strength for all ages, special concrete admixtures (superplasticizers, accelerators, viscosity modifying admixture and other specialty admixtures) and chrome reducing chemicals for cement.
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A cement grinding aid containing a combination of polymer A and known cement grinding aids is also disclosed. WO2005123621A1 - Cement grinding aid - Google Patents Cement grinding aid Download PDF …
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US4643362A US06/803,380 US80338085A US4643362A US 4643362 A US4643362 A US 4643362A US 80338085 A US80338085 A US 80338085A US 4643362 A US4643362 A US 4643362A Authority US United States Prior art keywords grinding acid alkylene polyol cement grinding aids Prior art date Legal status (The legal status is an …
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The invention involves a method of enhancing grinding efficiency of cement clinker and reducing the pack set tendencies of finished cement, using an improved grinding …
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In order to facilitate the comminution to powder form, so-called cement grinding aids are used. This greatly reduces the grinding times and energy costs. Such …
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