60results about How to "Reduce the amount of clinker" patented technology

The invention discloses a high efficiency cement composite grinding additive, comprising the following raw materials by weight percent: 10-25% of calcined gypsum, 10-30% of calcined aluminite, 20-40% of sodium metasilicate, 2-4% of triethanolamine, 0.5-2% of polyacrylate, 0.5-3% of dispersant and 20-30% of zeolite powder. The preparation method of the high efficiency cement composite grinding additive comprises the following steps: first selecting raw materials, then dripping liquid raw materials-triethanolamine and polyacrylate TH-1100 with a liquid pump in zeolite powder, then preparing reinforced grinding component with a dry powder mixer, finally adding the reinforced grinding component, calcined gypsum, calcined aluminite, sodium metasilicate and dispersant in a kneader to mix for 20-30min and obtaining the product. The product has prominent grinding aid, and can increase the hourly output of mills by 10-15%, reduce the consumption of electricity, and increase the cement 3-day compression strength and the cement 7-day compression strength by more than 20% and the cement 28-day compression strength by 10-15%.

The invention discloses a composite cement grinding aid, which is characterized by being prepared from the following components in percentage by weight: 5-15 percent of triethanolamine, 20-30 percent of diisopropanolamine, 15-20 percent of polymeric alkylol amine, 5-10 percent of sodium polyphosphate, 10-20 percent of lignosulfonate, 5-10 percent of syrup and the balance of water. By adopting the composite cement grinding aid, the grinding assisting effect of the conventional grinding aid is kept, the fluidity and dispersity of a material in a grinder can be enhanced remarkably, the bonding property of the material is reduced, the graduation of particles in the grinder is changed, the activity of the material is excited, the grinding efficiency is increased by 3-8 percent, the using amount of cement clinker is reduced by 4-10 percent, the hourly output of a cement grinding table is increased by 8-15 percent, the tensile strength of cement is enhanced by 4.1-5MPa within three days, the tensile strength of cement is enhanced by 6.7-7.9MPa within two days, the adaptability of an additive is enhanced, the cement production cost is reduced effectively, and a good energy-saving effect is achieved.

The invention belongs to a cement auxiliary and particularly relates to a cement grinding aid and a using method thereof. The cement grinding aid is prepared from the following components in parts by weight: 0.5-5 parts of modified cellulose, 1-5 parts of polyether polyol, 2-10 parts of hydramine substances, 1-9 parts of an enhancer, 2-10 parts of polyhydric alcohol, 0.1-1 part of urea and 14-45 parts of water. The grinding aid for a cement processing process provided by the invention plays a role of adjusting the particle sizes of cement, enhances the cement strength and reduces the energy consumption in the cement production process.

The invention relates to a Portland fly-ash cement and a preparation method thereof. In the method, an intermediate mineral--calcium sulfosilicate formed during the traditional firing process of sulphoaluminate cement clinker is used as a fly ash activity stimulator, and the Portland fly-ash cement is prepared from the following raw materials in percentage by weight: 40 to 68% of Portland cement clinker, 25 to 40% of fly ash, 2 to 6% of gypsum, and 5 to 14% of calcium sulfosilicate. The above-mentioned component materials are prepared in proportion, evenly mixed by a ball mill, and ground to such a fineness that sieving residue is less than or equal to 10% after passing a 200-mesh sieve, thereby obtaining the Portland fly-ash cement. The Portland fly-ash cement provided by the invention has the advantages that under the condition that a large amount of fly ash replaces the silicate cement clinker, the strength of cement is ensured and improved, the production cost of cement is reduced,and the pollution of the fly ash to the environment is reduced; meanwhile, silicate waste residues with high calcium sulfate content can be consumed in the preparation of calcium sulfosilicate mineral, the energy is saved, the consumption is reduced, the process is simple, the implementation is convenient and the like.

The invention relates to a cement composition and its preparation method. The raw materials and semi-finished products for cement production are different in grindability, are introduced into the cement composition in terms of different dispersity, and also have significantly different physical and chemical effects. The cement composition and its preparation method provided by the invention can maximumly give play to limestone, slag, and sorted coarse fly ash, is in favor of lowering the production cost of the cement composition and improving the comprehensive performance of the cement composition. The cement composition comprises portland cement clinker, gypsum, power plant desulfurization gypsum, limestone, slag, sorted coarse fly ash, boiler bottom slag and fluidized bed furnace slag, etc..

The invention belongs to cement auxiliaries, and particularly relates to a compound cement grinding agent and a method for applying the same. The compound cement grinding agent comprises, by weight, 5-20 parts of polycarboxylate, 1-9 parts of reinforcing agents, 1-10 parts of fatty alcohol polyoxyethylene ether sulfate, 0.1-1 part of urea and 14-45 parts of water. The compound cement grinding agent and the method have the advantages that the grinding agent is used in cement processing procedures, accordingly, cement particle diameter adjusting effects can be realized, the strength of cement can be improved, and energy consumption can be reduced in cement production procedures.

The invention relates to a composite grinding aid for cement production and a preparation method and application thereof. The grinding aid contains 1 to 10 percent weight of organic aid and 90 to 99 percent weight of inorganic matrix material. The organic aid comprises at least one of polycarboxylic acid and lignosulphonate, C2-C5 polyfatty alcohols, C2-C5 polyfatty alcohol amines and gluconate, and the inorganic matrix material comprises at least one of sodium silicate and sodium carbonate, sulfate, calcined gypsum and calcium oxide. The invention also discloses the preparation method and the application for the composite grinding aid. The product can remarkably improve early and later strengths of cement, reduce the electric consumption of the grinding, and reduce the using amount of clinker. The compressive strength of the cement is obviously improved, the grinding efficiency is improved by between 10 and 20 percent, and the water consumption of the standard consistency of the cement is kept unchanged basically when 10 to 15 percent of the using amount of the clinker is reduced. The composite grinding aid is particularly suitable for a cement production technology which uses pulverized fuel ash and furnace bottom slag of coal-fired power plants as a composite material.

The subject of the present invention is a composition comprising at least, in % expressed by weight relative to the total weight of composition, from 0.01 to 3% of polycarboxylic acid or one of the salts of said polycarboxylic acid comprising from 2 to 4 carboxyl groups per molecule; and from 97 to 99.99% of a Belite-Calcium-Sulphoaluminate-Ferrite clinker (BCSAF clinker).

The invention provides a cement reinforcing modifier. The mixing amount of cement is 0.1% to 0.5% by weight of the cement. The cement reinforcing modifier is prepared from the following components inpercentage by weight: 1% to 15% of liquid diethanol monoisopropanolamine or liquid triethanolamine, 1% to 10% of sodium gluconate or white sugar or brown sugar, 0.7% to 10% of sodium thiosulfate or sodium sulfate, 0. 3% to 5% of acetic acid, and 60% to 95% of carrier. The cement reinforcing modifier provided by the invention is added into the cement from a cement production ball mill or a verticalgrinding tail. The cement reinforcing modifier provided by the invention has the advantages of improving the strength of the cement, reducing the amount of clinker by 2% to 4%, reducing the cement producing cost, and reducing the water demand of standard consistency of cement by 2 to 4 ml. The cement reinforcing modifier provided by the invention is mixed with a concrete water reducing agent without the formation of precipitates, which can reduce the gradual loss; the ash and sand flying can be controlled by the cement reinforcing modifier when the floor is produced by the cement, and the surface hardness of the cement is improved.