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Dec 06, 2012· Abstract: The invention relates to an aqueous polymer composition which is used in the form of a cement grinding aid and makes it possible to effectively reduce the grinding time and to obtain cements exhibiting excellent characteristics. A cement grinding aid containing a combination of polymer A and known grinding aids is also disclosed.
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
The grinding aid of cement grinding aids is determined by orthogonal optimization. By adding different inorganic reinforcing components, Developed a cement grinding result turns out, compared with blank sample, the adulteration of grinding aid leads compression strength of 3d, 7d and 28d respectively are improved %, %
Grinding aids are mostly organic compounds that are added to the clinker in the cement mill. Their main purposes are to reduce the energy required to grind the clinker into a given fineness and therefore increase the efficiency of the cement mill. Grinding aids have been used for more
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.
Oct 26, 1971· United States Patent ... increasing the through put of a given grinding mill or by reducing the size of mill needed to grind a given amount of cement. The addition of a grinding aid enables the mill to grind the clinker to a smaller size with less energy by prohibiting the buildup of a coating of finer material on the grinding media and ...
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Nov 26, 2015· 1. A grinding aid composition for cement clinker grinding, comprising: an alkanolamine compound that is a primary alkanolamine compound, a secondary alkanolamine compound, or a mixture thereof; and a glycol. 2. The grinding aid composition of claim 1 wherein the primary alkanolamine compound comprises one C 2C 8 hydroxyalkyl group. 3.
A cement clinker grinding aid which comprises a styrenemaleic anhydride copolymer (SMA) superplasticiser. The SMA is preferably a type with polyoxyalkylenebased side chains. Use of the grinding aid renders the grinding process more efficient and improves the performance of cementitous compositions in which the cement thus ground is used.
Dec 04, 2008· Also disclosed was a mixture involving other hydroxylamines such as triethanolamine. The patent further claims that these amines could be added as grinding aids in the cement manufacture. (iv) United States Patents,, and French Patent . One of the major classes of grinding aids used today is the oligomers of
Oct 18, 2018· CAMBRIDGE, Mass. – October 18th, 2018 – GCP Applied Technologies Inc. (NYSE:GCP), a leading global provider of construction products technologies, is proud to announce the issuance of a patent for increasing the efficiency of cement grinding by using sustainable raw materials. The novel grinding aids and
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 ...
Grinding aids for VRMs increase the powder flowability of the finished cement without reduction of the stability of the material bed. The impact of grinding aids depends strongly on the fineness of the cement: The higher the surface area, the bigger the attraction force and therefore the bigger the benefit from an appropriate grinding aid.
USA US07/081,927 USA USA US A US A US A US A US A US A US A US A US A Authority US United States Prior art keywords glycol cement weight grinding grinding aid Prior art date Legal status (The legal status is an assumption and is not a legal .
Dec 21, 1999· A cement clinker grinding aid which comprises a styrenemaleic anhydride copolymer (SMA) superplasticiser. The SMA is preferably a type with polyoxyalkylenebased side chains. Use of the grinding aid renders the grinding process more efficient and improves the performance of cementitous compositions in which the cement thus ground is used.
Europe: USbased company GCP Applied Technologies has received a European patent for increasing the efficiency of cement grinding by using sustainable raw materials. The grinding aids and quality improvers allow the use of bioderived glycerol and reduce .
Oct 19, 2018· Europe: USbased company GCP Applied Technologies has received a European patent for increasing the efficiency of cement grinding by using sustainable raw materials. The grinding aids and quality ...
Oct 08, 2015· The invention relates to the use of an additive as grinding aid in the production of cement, to a method for producing cement using the grinding aid as well as to a cement obtained therefrom. TECHNICAL FIELD. Cement is an inorganic, finely milled hydraulically acting binder for mortar and concrete.
Sep 10, 2009· The invention relates to an aqueous polymer composition which is used in the form of a cement grinding aid and makes it possible to effectively reduce the grinding time and to obtain cements exhibiting excellent characteristics. A cement grinding aid containing a combination of polymer A and known grinding aids is also disclosed.
Cement grinding aid characteristics. A grinding aid is a surfactant that can improve the grinding environment. The common grinding aid is to improve the grinding effect by improving the viscosity of the material in the mill, the dispersion of the .
A grinding aid composition for improving the efficiency of cement grinding. The grinding aid composition comprises: an alkanolamine compound that is a primary alkanolamine compound, a secondary alkanolamine compound, or a mixture thereof; and a glycol.
May 11, 2015· • Combinations of grinding aids can be used to improve grinding aids of cement at all ages. • When TIPA is added individually it does not make significant difference in strength at 28 days. • 1 day strength of mixture of TEA .
(22) (43) (57) It discloses cement grinding aids prepared with waste antifreeze which comprises the following components in parts by weight: 2075 parts of pretreated waste antifreeze, 540 parts of alkanolamine, 15 parts of acid solution, 312 parts of saccharide and 1550 parts of water.
May 09, 1989· a. Glycols have been used for years as cement grinding aids, alone or with other additives. b. Pat. No. 3,420,686 teaches that urea is an effective grinding aid and pack set inhibitor. THE INVENTION. The invention is based on the combination of two components which individually have been shown to be effective grinding aids.
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