11 results about "Cement grinding" patented technology

The utility model discloses environment-friendly low-alkali cement grinding aid stirring equipment which comprises a stirring machine shell, an inner cavity is fixedly connected in the stirring machine shell, the top end of the inner cavity is in threaded connection with a first rotating shaft, a plurality of push type paddles are fixedly connected to the first rotating shaft in the vertical direction, and the first rotating shaft is in threaded connection with a second rotating shaft in the vertical direction. The top surface of the stirrer shell is fixedly connected with a motor I, and the output end of the motor I is fixedly connected with the rotating shaft I; a second rotating shaft is in threaded connection with the top end of the stirrer shell, a plurality of turbo type paddles are fixedly connected to the second rotating shaft in the vertical direction, a second motor is fixedly connected to the top face of the stirrer shell, and the output end of the second motor is fixedly connected with the second rotating shaft; liquid components are mixed with low shear force in the pre-stirring stage of the push-type paddle, the scrapers synchronously remove attachments on the wall of the cavity, and the turbo-type paddle rapidly crushes solid particles through high shear force and promotes uniform fusion of materials, so that the reaction activity of the grinding aid and the stability of a finished product are remarkably improved.

The application provides a cement cost determination method and device, electronic equipment and medium, and relates to the field of cement.The method comprises the following steps: obtaining target proportions of component cement ingredients according to each proportion constraint interval of the component cement ingredients and a preset proportion target; and determining the cement cost according to the target proportions of all component cement ingredients and the unit price of each component cement ingredient, in the case that a target particle size distribution of the target proportions meets a preset particle size distribution constraint interval, a target cement fineness of the target proportions meets a preset cement fineness constraint interval, and a target cement strength of the target proportions meets a preset cement strength constraint interval.The application seeks an optimal cement grinding ingredient scheme by taking the following conditions as constraints: suitable cement particle size distribution composition, lowest cement comprehensive cost, and lowest cement quality meeting standard requirements, so as to reduce the cement cost while ensuring that the constraints are met.

The utility model relates to cement processing technical field, and disclose a kind of cement grinding aid atomizing device, including connecting pipe, first shell and second shell, the second shell is arranged in the inside of first shell, the connecting pipe is fixedly connected in the end of first shell, the inner wall of first shell is fixedly connected with connecting ring, the second shell is fixedly connected in the inner wall of connecting ring, the top of first shell is fixedly connected with gas pipe, the gas pipe extends to the gap of first shell and second shell place. The utility model provides that the sliding fit of sealing piston and sealing seat forms dynamic sealing structure, when there is no air pressure, spring pushes sealing piston and press tightly and is set on the sidewall above sealing seat located bar-shaped mouth, blocks grinding aid passage, prevents leakage, when gas pipe is passed into compressed air, air pressure exceeds spring pre-tightening force, sealing piston moves and opens passage, realizes the automatic control of air pressure drive and sealing opening.

This invention discloses a precision grading intelligent cement grinding device, comprising: a support member, on which a sieve is provided for grinding and screening mixed materials, and on which a discharge member is provided for discharging the screened cement powder; in this invention, the sieve is equipped with a multi-layer stacked processing box and a conical worktable, and a linkage operation structure is formed by symmetrically arranged grinding rollers and push rods. The cement powder is precisely graded by means of vertically aligned screening holes, and the forward and reverse rotation modes are used to switch between material grinding and pushing and coarse material discharge functions. The multi-stage sieves connected in series can complete progressive fine grinding, which can not only ensure the uniformity of material grinding, but also strictly control the particle size distribution of cement powder, and is suitable for the grinding and processing needs of various raw materials.

The invention relates to the technical field of daub grinding equipment, and discloses a high-temperature daub raw material grinding and crushing device for high-temperature daub preparation. A grinding assembly; the grinding assembly comprises a mincing device, a grinding device, a crushing device and a circulating device. According to the high-temperature daub raw material grinding and crushing device for high-temperature daub preparation, by arranging the gap between the frustum-shaped grinding table and the box body, rotary grinding operation is achieved, multi-layer grinding of raw materials is achieved according to the multiple gaps of different sizes, upward conveying force can be provided for the raw materials through grinding spiral threads, and the grinding efficiency is improved. When some particles are too large and cannot be ground, the particles can be driven by the grinding spiral threads to move upwards, and then the pressing blocks moving up and down are used for crushing the particles in a pressing mode, so that the subsequent grinding process is guaranteed, and finally the overall raw material grinding effect is improved.

The application belongs to the technical field of dust collecting equipment, and particularly relates to a dust collecting device based on cement grinding aid production, which comprises a dust collecting main body, a partition plate fixedly connected in the dust collecting main body, and cloth bag devices uniformly distributed on the partition plate and detachably connected with the partition plate; the cloth bag devices are detachably connected with the partition plate, and a connecting seat provided with a through hole is arranged on the cloth bag devices; an elastic net is fixedly connected on the connecting seat, and a cloth bag is connected on the elastic net; a plurality of extruding plates for extruding the elastic net are uniformly distributed along the circumference in the elastic net, the movement direction of the extruding plates is close to or away from the central axis of the connecting seat, and the movement directions of adjacent extruding plates are opposite; a pulse dust cleaning structure for dust cleaning of the cloth bag is arranged on the dust collecting main body; the dust collecting device based on cement grinding aid production is integrated with mechanical dust cleaning and pulse gas dust cleaning, and effectively solves the problem of poor dust cleaning capacity of the existing dust collecting device based on cement grinding aid production.

This invention relates to the field of grinding aid technology, specifically to a low-carbon cement grinding aid formulation and preparation process. It is composed of bio-based modified xylan, modified composite solid waste filler, modified alkanolamine complex, chelating activating components, a low-carbon polyol system, and deionized water. The bio-based modified xylan is obtained by grafting and modifying xylan derived from agricultural waste. The modified composite solid waste filler is a mixture of modified phosphogypsum and modified red mud. The modified alkanolamine complex is an environmentally friendly system free of triethanolamine. The composition combines high-efficiency grinding aid with low-carbon and environmentally friendly characteristics. This invention breaks through the technical bottlenecks of traditional products, achieving excellent grinding enhancement performance and low-carbon and environmentally friendly characteristics through the synergistic effect of multiple components. It has a wide range of applicability, a simple production process, and good economic and social benefits.

The application relates to a high-berlet cement grinding aid stirring kettle sampling device and relates to the field of material sampling, which comprises a kettle body, one side of the kettle body is connected with a sampling pipe, the sampling pipe comprises sampling pipe No. 1 and sampling pipe No. 2 which are in communication with each other, valve No. 1 is installed on the sampling pipe No. 1, a piston block is slidably connected in the sampling pipe No. 2, valve No. 2 is installed at one end of the sampling pipe No. 2 which is away from the sampling pipe No. 1, an installation cavity is arranged between the piston block and the valve No. 2, the diameter of the installation cavity is larger than the inner diameter of the sampling pipe No. 2 and the diameter of the piston block, and an adjusting mechanism for driving the piston block to move towards or away from the installation cavity is connected to the sampling pipe No. 2. The application has the effect of ensuring that the stirring kettle is in a sealed state during sampling.

This invention discloses a method and system for controlling particle size distribution in cement grinding based on activity matching, belonging to the cement industry. The method includes: acquiring the actual particle size distribution of multiple material samples within different preset particle size ranges and the activity index at a preset reference age; classifying the material samples into high-activity, medium-activity, and low-activity materials based on the activity index at the preset reference age and establishing a mapping model between material activity and particle size range; according to the mapping model, separately grinding the high-activity, medium-activity, and low-activity materials to obtain each component material; obtaining an optimized mix proportion; monitoring the actual particle size distribution of the finished cement and calculating the activity matching degree using the optimized mix proportion and mapping model; determining whether the activity matching degree is greater than or equal to a preset threshold; if not, adjusting the optimized mix proportion or grinding parameters. This application avoids the waste of activity caused by excessively coarse particles in high-activity materials and also prevents energy waste caused by excessive grinding of low-activity materials.

The utility model discloses a cement fly ash batching system, including storage tank, manual valve, conveying chute, the lower extreme of storage tank is installed with the shell, the middle part of shell is installed with the blanking tube, the inside installation of shell has the breather board of inclination setting, the breather board is connected on the blanking tube upper end, the manual valve is connected with blanking tube, the export of manual valve is connected with automatic valve, the export of automatic valve is connected with rotor scale, the maintenance cover of manual valve is connected with manual valve through the compactor, the conveying chute is connected with the export of rotor scale, through the pneumatic valve control compressed air to enter the shell, and the compressed air is blown into the inside of storage tank after passing through the breather board, then the compressed air is discharged from the blanking tube, can drive fly ash to discharge from the storage tank, can alleviate fly ash wall sticking situation while improving the flowability of fly ash, and fly ash discharges stably.

This invention discloses a multi-arm polymer cement grinding aid, its preparation method, and its application. The preparation method involves mixing tetrahydroxyethyl ethylenediamine, an amino mercapto acid compound, and a polymerization inhibitor, stirring, and heating to 100–120°C. A catalyst and a dehydrating agent are added, and the mixture undergoes esterification for 3–8 hours. The resulting product is purified to obtain a primary amine chain transfer agent. Next, amino polyethylene glycol methyl ether, a diunsaturated carboxylic acid or anhydride, the primary amine chain transfer agent, and water are mixed, stirred, and heated to 30–50°C. An initiator is added, and simultaneously, an aqueous solution of unsaturated polyol ether and a reducing agent are added dropwise. The mixture is then kept at 50–60°C for 1–2 hours to obtain the multi-arm polymer cement grinding aid. This invention, considering the characteristics of vertical mill processes and the relationship between cement particle morphology and performance, utilizes the designability of organic molecular structures to synthesize a grinding aid that can stabilize the vertical mill material layer, improve grinding efficiency, increase the sphericity of cement particles ground in the vertical mill, reduce the water requirement for the standard consistency of cement ground in the vertical mill, improve the fluidity of cement slurry ground in the vertical mill, and increase cement strength.