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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.
Oct 19, 2018· Europe: US-based 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.
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
Europe: US-based 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 bio-derived glycerol and reduce .
US4828624A US07/081,927 US8192787A US4828624A US 4828624 A US4828624 A US 4828624A US 8192787 A US8192787 A US 8192787A US 4828624 A US4828624 A US 4828624A Authority US United States Prior art keywords glycol cement weight grinding grinding aid Prior art date 1986-10-28 Legal status (The legal status is an assumption and is not a legal .
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
Cement Patents. The following list contains the 49 patents Edison received concerning cement. It is arranged in chronological order by execution date, which is the date on which Edison signed the application and the date in the patenting process that comes closest to the time of actual inventive activity.
Low Cost Grinding Aids for Cement Due to the current economic crisis and the situation in progress in the construction industry, Spanish cement producers have been obliged to take several measures in order to notably reduce costs. In light of this situation, Proquicesa decided to focus its R&D efforts on the development of an ...
A grinding aid composition suitable for grinding clinker into hydraulic cement powder, an improved grinding process and an improved cement product are disclosed. The grinding aid composition is composed of a mixture of at least one alkylene ether glycol and particulate carbon.
Jun 12, 2019· TAVERO™ VM grinding aid additives help stabilize vertical roller mills (VM) during production by reducing water injection requirements and cement pre-hydration, while at the same time improving ...
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 2-C 8 hydroxyalkyl group. 3.
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 .
The grinding aid according to the invention are particularly valuable in the case of cement and especially Portland cement. Portland cement is one of the hydraulic cements, which essentially consist of two calcium silicates and a smaller amount of calcium aluminate.
Oct 26, 1971· United States Patent 3615785 ... 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 ...
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
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.
May 09, 1989· a. Glycols have been used for years as cement grinding aids, alone or with other additives. b. U.S. 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.
Dec 21, 1999· A cement clinker grinding aid which comprises a styrene-maleic anhydride copolymer (SMA) superplasticiser. The SMA is preferably a type with polyoxyalkylene-based 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.
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.
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 .
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 4204877, 3615785, 5125976 and French Patent 2337699. One of the major classes of grinding aids used today is the oligomers of
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