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 …
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 …
Grinding is an essential operation in cement production given that it permits to obtain fine powder which reacts quickly with water, sets in few hours and hardens over a period of weeks. i ...
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, …
The invention discloses a cement grinding aid and production process thereof, wherein the weight portions of the cement grinding aid are, activated humic acid powder 60, triethanolamine 20, and coal ash 44. ... Cement grinding aids and production process thereof Download PDF Info Publication number CN1566017A. ... Priority to ...
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 …
Justia Patents US Patent for Cement grinding aid compositions Patent (Patent # 4,828,624) ... 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 …
Grinding aids (GAs) are polar chemicals introduced in cement mills in either liquid or powder form to improve on mill grindability efficiency.
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 …
grinding tin cement grinding aids Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) ... Priority to DE19833603A priority Critical patent/DE19833603C2/en ...
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. ... Method for grinding carbon using grinding aids. CN106746843A (en) * : …
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 …
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 ...
The invention relates to a cement grinding aid and a preparation field thereof, in particular to a cement grinding aid and a preparation method thereof. The cement grinding aid is prepared from, by weight, 10%-20% of alcohol amine compounds, 1%-5% of molasses, 0.5%-3% of sodium sulfate, 5%-15% of sodium chloride, 10%-20% of sodium …
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 …
A cement grinding aid containing a combination of polymer A and known cement grinding aids is also disclosed. 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.
PACTOCem range of grinding aids and performance enhancers can save up to 50% of grinding cost. PACTOCem Products. Grinding aid and Pack Set reducer; Quality and Strength enhancer; Performance Enhancer; Raw Mill Grinding Aid; Grinding Aid for Masonry cement; Grinding Aid for White Cement; Grinding Aid for Slag grinding; …
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 …
Among them, relatively expensive glycols (especially DEG) or amines such as triethanolamine have been mainly used as cement grinding aids (see US Patent No. 4,828,624 (Patented on May 9, 1989)). These products are expensive and have high production costs, and amines have been found to be carcinogenic.
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 …
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 …
Grinding aids (GAs) are polar chemicals introduced in cement mills in either liquid or powder form to improve on mill grindability efficiency.
European Patent Office Prior art keywords use according glycerine weight clinker compression strength Prior art date ... High-performance water cement grinding aids containing waste vegetable oil and preparation thereof and using method CN102757189B (en) : Parameter proportion of slow setting cement for highway construction ...
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 …
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 …
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 …
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 …
A cement additive is provided to secure early strength and to improve grinding efficiency, quality and productivity by being used as a grinding aid and to ensure excellent compatibility with an admixture. A cement additive for improving early compressive strength comprises any one or a mixture of at least two selected from N,N …
The introduction of TAVERO® VM grinding aids round out the product line with solutions designed specifically for vertical roller mills (VRM). Using TAVERO® VM additives and cement production best practices gleaned from GCP's decades of field experience, you can achieve lower water injection, less cement pre-hydration and therefore:
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 …
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 …
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.
The utility model discloses an automatic metering system for cement grinding aids. The automatic metering system comprises a grinding aid metering pump, a grinding aid storage tank, a flow meter, a cement mill, a DCS (Distributed Control System) control cabinet and an upper computer, wherein an outlet of the grinding aid storage tank is …