512 results about "Cement grinding" patented technology

The invention discloses an intelligent regulation and control method applied to cement grinding particle gradation, and relates to the technical field of cement grinding control, and the method comprises the following steps: S1, collecting grinding system operation parameters in real time, including mill current, powder concentrator rotating speed, feeding amount, grinding sound signals and online particle size detection data; s2, calculating core characteristic parameters based on the operation parameters, wherein the core characteristic parameters comprise an effective crushing power index, a dynamic fine powder retention rate and an in-mill material filling state index; s3, inputting the core characteristic parameters into a grading prediction model, and outputting predicted particle size distribution; s4, generating an adjustment instruction through a hierarchical control strategy based on the predicted particle size distribution; and S5, outputting the adjustment instruction to an execution mechanism. The particle size distribution is accurately predicted by collecting and analyzing the operation parameters of the grinding system in real time and combining core characteristic parameters, closed-loop intelligent regulation and control are achieved, the grinding efficiency, stability and product quality are improved, and meanwhile the control precision is optimized.

The invention discloses a nano material modified alcohol amine grinding aid as well as a preparation method and application thereof, and the preparation method comprises the following steps: firstly, carrying out esterification reaction on alcohol amine and an acid small monomer containing double bonds to generate an esterification product; then, carrying out bulk polymerization on the esterification product and a silane coupling agent KH-570; and finally, combining the bulk polymerization product with the nano-material through a dehydration reaction of a silane coupling agent and hydroxyl on the surface of the nano-material to form the nano-material modified alcohol amine grinding aid. According to the invention, the nano material is directly grafted into the alcohol amine, so that the dispersity of the nano material in the cement grinding process can be effectively optimized, the friction force and energy consumption among cement particles can be reduced, the efficiency and stability of the cement production process can be improved, and the strength and durability of the cement product are improved.

The invention discloses a liquid cement grinding aid and a preparation method thereof, and belongs to the technical field of cement grinding aid preparation, the liquid cement grinding aid comprises the following raw materials by weight: 76-80% of water, 18-20% of hydrochloric acid and 2-4% of sodium hexametaphosphate. The preparation method of the liquid cement grinding aid comprises the following steps: uniformly mixing the raw materials according to the weight percentage, and carrying out activation reaction to prepare the liquid cement grinding aid. The cement grinding aid disclosed by the invention is prepared by mixing hydrochloric acid, water and sodium hexametaphosphate according to a specific proportion, and through scientific regulation and control of the synergistic effect of all the components, the cement grinding aid has good grinding aiding performance and remarkably improves the specific surface area and grinding aiding efficiency of cement; the component design fully considers the cement hydration process and the compatibility with the water reducing agent.

The invention relates to the technical field of cement production and manufacturing, aims at solving the problems that an existing grinding system is single in function and cannot have multiple cement grinding processes at the same time, and provides a composite multi-process cement grinding system and process and a cement production method. Wherein the composite multi-process cement grinding system comprises a roller press grinding system and a ball mill grinding system, and the composite multi-process cement grinding process comprises three grinding processes, namely a combined grinding process, a semi-final grinding process and a final grinding process; the cement production method comprises the following steps: separately grinding clinker and a mixed material by using two sets of cement grinding systems, and then mixing by using a mixing system to obtain a finished product. According to the invention, the limitation of a single grinding system is broken through, the operability of the system is improved through an ingenious switching means, and the advantages and functions of production through one system and coexistence of multiple technological processes are realized.

The invention relates to the technical field of powder selecting machines, and particularly discloses a composite powder selecting machine which comprises a first filtering bin, an airflow bin and a second filtering bin, a plurality of scraping plates are rotationally connected in the first filtering bin through a gear ring, a fixing ring is rotationally connected to the gear ring, a discharging opening is formed in the fixing ring, a first vertebral plate is fixedly connected in the first filtering bin, and a second vertebral plate is fixedly connected in the second filtering bin. The airflow bin is fixedly connected with a second filtering bin, a vertebral plate II and a conical part are fixedly connected in the second filtering bin, the second filtering bin is fixedly connected with a discharging bin, the vertebral plate II is fixedly connected with a material guide pipe, the gear ring is connected with a motor II through a gear, and the airflow bin is connected with an air pump through an air guide pipe. The cement grinding device has the beneficial effects that cement can be scattered through a stirring plate in the storage bin, coarse powder can be filtered out through a first vertebral plate in the first filtering bin and is discharged from a discharging port through a scraper blade, the cement can rotate along a second vertebral plate through the airflow bin, medium powder and fine powder are separated, and finally the medium powder and the fine powder are separated.

The invention discloses an enhanced cement grinding aid and a preparation method thereof, and belongs to the technical field of cement admixtures. The concrete additive is prepared from the following raw materials in parts by weight: 20-30 parts of an alcohol amine compound, 10-20 parts of ethylene glycol, 1-3 parts of a surfactant, 0.3-0.5 part of a defoaming agent, 3-5 parts of a macromolecular synergist, 1-3 parts of a polycarboxylate superplasticizer, 0.5-1.5 parts of molasses and 20-30 parts of water. The alcohol amine compound comprises triethanolamine and modified alcohol amine; the macromolecular synergist is a sodium alginate-beta-cyclodextrin macromolecular compound. According to the cement grinding aid, the cement grinding efficiency can be remarkably improved, and the machine-hour yield is improved by 24.5% or above; the 3-day strength of the cement is improved by 5.9 MPa or above, and the 28-day strength of the cement is improved by 10.7 MPa or above, so that the cement has a good market application prospect.

The invention provides a method and a system for preparing low-carbon cement by grading gradient utilization of coal gasification ash. The method comprises the following steps: dividing the coal gasification ash into carbon-rich ash, medium-carbon ash and carbon-poor ash according to the carbon content; feeding the carbon-rich ash and feed coal into a pulverized coal preparation workshop to prepare a first mixture serving as clinker calcination fuel; metering the medium-carbon ash residue, feeding the medium-carbon ash residue and other raw material components into a raw material preparation workshop, and grinding and drying; decomposing and calcining the uniformly mixed second mixture, and cooling to obtain clinker; and feeding a mixture of the clinker, other cement components and carbon-poor ash into a cement preparation workshop to prepare finished cement. Coal gasification ash materials with different characteristics are obtained by grading the carbon content of the coal gasification ash, and are respectively used in three process sections of cement raw material grinding, clinker calcining and cement grinding in combination with the characteristics of a cement production process, so that the coal gasification ash realizes large-dosage and large-scale utilization in the aspect of building material resources; the carbon emission in the cement clinker production process is reduced.

The invention relates to the technical field of cement grinding control, in particular to a cement grinding parameter adjusting method and system based on grain composition, which can improve the quality control capability and efficiency in the cement production process and reduce the production cost and environmental influence. The method comprises the following steps: collecting a cement grinding production sample in real time, and carrying out a screening test on the production sample to obtain real-time grain composition data of cement grinding; calculating an error between the real-time grain composition data and preset target grain composition data to obtain a grain composition error vector; obtaining a plurality of grain composition error vectors according to a preset frequency; aligning the error values of the same grain size at different time points in the plurality of grain size distribution error vectors to the same column, aligning the error values of each grain size at the same time point to the same row, and arranging according to a time sequence to obtain a cement grinding particle error characteristic matrix; and inputting the cement grinding particle error characteristic matrix into a pre-constructed particle grading error analysis model.

The invention discloses a preparation method of low-cost solid-waste-based sulphoaluminate cement, and relates to the technical field of cement preparation.The preparation method comprises the steps of solid waste pretreatment, ingredient design, raw material preparation, low-temperature calcination, clinker quenching and cement powdering.By means of the scheme design, high-aluminum / sulfur-rich solid waste such as red mud, desulfurized gypsum and fly ash is used for replacing 70% or above of natural raw materials, and the low-cost solid-waste-based sulphoaluminate cement is obtained; for example, expensive alumina, natural gypsum and the like, the cost of the raw materials can be directly reduced by more than 40%. Wherein the red mud is used as the waste residue of the aluminum oxide industry, the original treatment cost is very high, and the red mud is converted into an effective aluminum source nowadays, so that negative-cost raw material utilization is realized, and the waste residue treatment cost is also saved; the desulfurized gypsum is used as a power plant waste material to completely replace natural gypsum, so that the sulfur source cost is reduced by 60%. Through comprehensive calculation, the production cost of the clinker is reduced by 30-35% compared with that of the traditional sulphoaluminate cement.

The utility model discloses a conveying device for grinding aluminate cement, and belongs to the technical field of cement processing. The conveying device for aluminate cement grinding comprises a first machine frame, a second machine frame, conveying rollers and a conveying belt, wherein the first machine frame and the second machine frame are symmetrically erected; the conveying rollers are rotationally arranged between the first machine frame and the second machine frame and are distributed in a linear arrangement mode; the conveying belt is arranged on the outer sides of the conveying rollers in a sleeving mode; the driving motor is fixedly arranged on the first rack and used for driving one conveying roller to rotate, the quantifying mechanism is arranged above the conveying belt, and the conveying rollers are connected through the conveying belt and transmit power. According to the conveying device for aluminate cement grinding, the driving motor drives the conveying belt to convey materials, and meanwhile, the belt wheels are matched with the belt to drive the gears to be meshed, so that the cleaning brush cleans the surface of the conveying belt, residues of the materials on the conveying belt are reduced, and the conveying belt is kept clean.

The invention relates to the technical field of cement production equipment, in particular to a grading rotor speed regulation and control method and system based on a uniform flow field, which has the advantages of high dynamic adaptability, high accuracy, simplicity and convenience in operation, high predictability and high expandability by introducing the grading rotor speed regulation and control method based on the uniform flow field. The energy consumption and the maintenance cost are reduced, and the working efficiency of cement production grinding operation and the quality of cement products are improved; the method comprises the following steps: acquiring target granularity of grinding operation and cement material granularity distribution data; dividing the cement material particle size distribution data based on the target particle size to obtain cement material grading characteristic information, the cement material grading characteristic information including the target particle size, a target particle size mass ratio, a non-target particle size and a non-target particle size mass ratio; obtaining characteristic information of the graded rotor; and carrying out data fusion on the classification rotor characteristic information and the cement material classification characteristic information.

The utility model relates to the technical field of cement production, and discloses a cement grinding device for cement production, which comprises a fixed plate, the left end of the top of the fixed plate is fixedly connected with a base plate, the top of the base plate is fixedly connected with a motor, and the output end of the motor is fixedly connected with a first gear. The front end of the surface of the first gear is in meshed connection with a second gear, the inner diameter of the second gear is fixedly connected with a grinding tank, the right end of the top of the fixing plate is fixedly connected with a first supporting plate, the top of the first supporting plate is fixedly connected with a first supporting plate, and the top of the first supporting plate is fixedly connected with a weighing sensor. The top of the weighing sensor is fixedly connected with a material box, and the left end of the outer wall of the material box is fixedly connected with a U-shaped plate. According to the utility model, materials are placed in the material box through the material box, the weighing sensor, the air cylinder, the baffle and the transfer bin, then the weighing sensor weighs the materials, and the air cylinder is started to drive the baffle to move upwards.

The utility model relates to the technical field of cement grinding mill activation, and discloses a cement grinding mill activation ring baffle device which comprises an installation frame, a buffer rubber ring is fixedly connected to the outer portion of the installation frame, a lining plate is slidably connected to the interior of the installation frame, and an adjusting installation mechanism is arranged in the installation frame. An auxiliary adjusting mechanism is arranged on the front face of the mounting frame, in the using process, a worm rotates and is matched with a worm gear to enable a gear to rotate, the lining plate is conveniently limited, accordingly, mounting operation of workers is facilitated, the labor amount of the workers is reduced, a sliding rod moves and is matched with a spring to enable a clamping block to move, and the working efficiency is improved. Limiting installation and use of different center cones can be conveniently achieved, the use effect is improved, through rotation of a threaded rod, cooperation with a limiting rod, movement of a movable block, adjustment of the position of a contact block and cooperation with a buffer rubber ring, the device can be leveled while different cement grinding mills are installed and used, and accidents in the use process are avoided.

The utility model relates to the technical field of cement production, and discloses a cement grinding production device with a damping function, which comprises a machine body, a motor, a grinding roller, a screen and a discharge port are arranged in the machine body, and feeding ports are uniformly embedded in the top of the machine body at equal intervals; a material mixing plate is fixedly mounted in the machine body, and mixed material outlets are formed in the tail ends of the two sides of the material mixing plate; a rotating shaft is rotatably mounted in the machine body, a connecting plate is fixedly mounted on the rotating shaft, a rubber scraper is fixedly mounted on the connecting plate, and the rubber scraper is in direct contact with the surface of the mixing plate; and two discharging plates are rotationally mounted in the machine body. Materials can be fully mixed in the grinding device, the process of transferring the mixed materials is omitted, the mixing activity and the grinding activity are carried out at the same time, and the efficiency is higher.

The utility model relates to the technical field of cement grinding, and discloses a grinding device for cement processing, which comprises a grinding cylinder, a first grinding column and a second grinding column are sleeved on the inner arc surface of the grinding cylinder, the first grinding column is arranged at the top of the second grinding column, and a first funnel groove is arranged at the inner center of the first grinding column. And a second funnel groove is formed in the center of the interior of the second grinding column, a first conical grinding column and a second conical grinding column are rotationally connected to the interior of the first funnel groove and the interior of the second funnel groove correspondingly, and a rotating mechanism for rotating the first conical grinding column and the second conical grinding column is arranged in the grinding barrel. Through the arrangement of the springs, the first conical grinding column and the second conical grinding column can be more conveniently attached to the interiors of the first funnel groove and the second funnel groove during use, so that the cement grinding effect is improved, and grinding is finer.

The invention belongs to the technical field of cement grinding aids, and particularly relates to an efficient cement grinding aid and a preparation method thereof.The efficient cement grinding aid is prepared from, by weight, 15%-30% of polyhydric alcohol compounds, 10%-15% of organic acid salt, 12%-20% of a surfactant, 10%-15% of a reinforcing agent and 0.3%-5% of a defoaming agent; the invention further discloses a preparation method of the efficient cement grinding aid. The preparation method comprises the following preparation steps: S1, raw material pretreatment; s2, mixing and dispersing; s3, preparing solid raw material spherical particles; s4, dissolving; s5, adding nano silicon dioxide and modified starch; and S6, post-processing. The cement grinding aid disclosed by the invention can be used for refining cement particles and optimizing particle composition, so that the specific surface area of cement is increased, the problems of caking of raw materials and non-uniform local concentration are effectively avoided, and the mixing effect is improved.

The invention discloses a system and method for producing low-carbon cement through photovoltaic power generation hydrogen production. The system comprises a photovoltaic power generation system, a water electrolysis hydrogen production system, a raw material grinding system, a rotary kiln calcination system, a cement grinding system and a carbon resource utilization device. The photovoltaic system provides a clean power supply for the electrolysis device, and a solid oxide electrolytic tank is adopted to efficiently prepare hydrogen at high temperature; hydrogen is input into the rotary kiln through a multi-point injection and oxygen combustion-supporting structure to serve as unique fuel, and zero carbon emission in the cement calcination process is achieved; carbon dioxide in tail gas of the system is purified and then synthesized into methanol together with hydrogen, and an energy-carbon cycle closed-loop path is constructed; linkage optimization of photovoltaic output, electrolytic load, calcination heat intensity and carbon conversion efficiency is realized through a multi-stage waste heat recovery and intelligent control system; the method has the remarkable advantages in the aspects of improving the energy utilization efficiency, reducing carbon emission and promoting resource collaboration and intelligent control, and is suitable for construction of a novel green cement industrial platform.

The invention discloses a steel slag cement grinding aid and a preparation method and application thereof, and belongs to the technical field of concrete admixtures, the steel slag cement grinding aid comprises the following raw materials by mass: 80-90% of steel slag, 4-6% of an acid solution and 6-14% of magnesium aluminum silicate waste residue. The preparation method comprises the following steps: crushing the steel slag, and mixing and stirring the crushed steel slag, the acid solution and the magnesium aluminum silicate waste residue to obtain the steel slag cement grinding aid. The steel slag cement grinding aid prepared by the method provided by the invention is low in cost, non-toxic and non-corrosive, improves the grinding effect of a cement product, provides a way for solving the technical problem for waste slag and steel slag discharged by iron and steel enterprises, and has the effects of saving energy, reducing emission, reducing carbon emission, protecting the environment and improving the economic benefit. And moreover, the preparation method is advanced and is widely suitable for being used in cement enterprises.

The invention relates to the technical field of cement grinding aids, in particular to a composite liquid cement grinding aid and a preparation method of the composite liquid cement grinding aid. Maleic anhydride, triethanolamine, acrylic acid and isopentenyl polyoxyethylene ether are used as raw materials in a macromolecular grinding aid solution; a reaction product of maleic anhydride and triethanolamine can form a compound with special functional groups, the functional groups can be effectively adsorbed on the surfaces of cement particles, friction among the particles is reduced, the grinding efficiency is improved, and the dispersity and stability of the grinding aid can be further enhanced by adding acrylic acid and isopentenyl polyoxyethylene ether, so that the grinding aid has a good application prospect. The cement particles are more easily dispersed in water, the agglomeration phenomenon is reduced, and the refining of the cement particles is facilitated; according to the invention, sodium lignin sulfonate is modified by grafting diethanolamine, and on the basis of retaining the original dispersibility of sodium lignin sulfonate, a new functional group is introduced, so that the interaction between sodium lignin sulfonate and cement particles can be enhanced, and the grinding aiding effect is further improved.

The cement grinding mill dust collection device comprises a filter box and an ash discharge box, the bottom of the filter box communicates with the top of the ash discharge box, a dust collection opening is formed in one side of the filter box, an air draft mechanism is arranged on the other side of the filter box, the air draft mechanism penetrates through the side wall of the filter box and extends into an inner cavity of the filter box, and a filter mechanism is arranged in the inner cavity of the filter box. A beating mechanism is arranged on the outer side of the top of the filter box, one end of the beating mechanism penetrates through the top of the filter box and extends to an inner cavity of the filter box, and an ash discharging mechanism is arranged in an inner cavity of the ash discharging box. In the prior art, a large amount of dust is accumulated in a dust collection bag and blocks the dust collection bag, the actual effect of the dust removal mode is poor, so that the later dust collection efficiency is influenced, and in addition, the dust removal mode generally adopts continuous dust removal or manual dust removal, and the problem that the dust removal effect is influenced by excessive dust due to the fact that dust is not discharged in time during manual dust removal occurs.

The utility model relates to a uniform drying device for cement grinding aid, which comprises a tank body, a mounting cavity is arranged in the tank body, a barrel body is rotatably connected in the mounting cavity, a drying cavity is arranged in the barrel body, a rotating barrel is rotatably connected in the drying cavity, a spiral blade for conveying grinding aid powder is arranged on the periphery of the rotating barrel, and a material lifting blade is arranged on the inner wall of the barrel body. The multiple material lifting blades are arranged at intervals in the radial direction and the axial direction, a first connecting part which extends downwards and extends out of the mounting cavity is arranged at the bottom of the barrel body, the first connecting part is connected with a first driving mechanism, and a second connecting part which extends upwards and extends out of the mounting cavity is arranged at the top of the rotating barrel; the second connecting part is connected with a second driving mechanism which is used for driving the barrel to rotate. The cement grinding aid powder scattering device has the following advantages and effects that cement grinding aid powder can be scattered in the conveying process of the cement grinding aid powder, so that the cement grinding aid powder can be dried more sufficiently and uniformly.

The invention relates to the technical field of cement grinding aids, and particularly discloses an efficient composite Portland cement clinker grinding aid and application thereof. The grinding aid comprises a liquid A and a liquid B which are separated from each other. Wherein the solution A comprises a mixed solution of ethylene glycol and water and iron dihydrogen phosphate. Wherein the volume ratio of the ethylene glycol to the water is (3-3.7): 1, and the iron dihydrogen phosphate in the mixed solution is in a saturated state. The solution B comprises a sodium borohydride and / or potassium borohydride solution, a polycarboxylate superplasticizer and modified magnesium oxide powder. Wherein the mass fraction of the sodium borohydride and / or potassium borohydride solution is 3-5%, the mass fraction of the polycarboxylate superplasticizer in the solution B is 12-17%, and the content of the modified magnesium oxide powder is 4.5-7 g / L. The grinding aid disclosed by the invention can effectively eliminate the electrostatic effect of cement particles, reduce re-agglomeration among the particles and improve the dispersity of cement clinker particles, so that the grinding efficiency is improved.

The utility model relates to the field of cement processing, in particular to a solid waste cement mill tailing powder external mixing device which comprises a box body, a bottom block, a rotary drum, first spiral lifting drums and second spiral lifting drums, the box body is arranged at the upper end of the bottom block, the first spiral lifting drums distributed in a linear array mode are arranged at the lower end in the box body, and the rotary drum is arranged in the middle of the box body. And a spiral lifting cylinder II is rotationally mounted in the middle of the rotating cylinder. The device can utilize the treatment effects of continuously stirring admixtures to reduce caking and discharging to assist non-blocking, and solves the problems that an existing cement external mixing device lacks a large-range stirring and conveying effect, so that blocking and damp caking are easily caused when too many objects are added, smooth adding cannot be carried out, and the work progress is influenced.

The utility model belongs to cement grinding technical field, concretely relates to a continuous cement grinding device, including support platform, the upper end of support platform is provided with vertical roller mill, the right -hand member of support platform is provided with auger elevator, the lower end fixedly connected with the blanking box of support platform, the inner wall fixedly connected with screen cloth of blanking box, the right -hand member fixedly connected with the discharge box of blanking box, the feed pipe fixed connection of discharge box and auger elevator. The cooperation and use of vertical roller mill, screen cloth, auger elevator etc. structure can be used for roller grinding, screening, continuous roller grinding operation of gypsum, clinker etc. to reduce the difference of cement powder granularity, under the action of card slot, card etc. structure, the rotation adjustment of sealing disc, the spacing use can be carried out, and then the adaptability adjustment of the flow diameter of discharge pipe is carried out, and the subsequent continuous roller grinding operation treatment is convenient.

The invention relates to the technical field of cement, and discloses a nano-silica-containing cement grinding aid and a preparation method thereof.The nano-silica, sulfur-containing phenolic resin, lignin and water are added into a stirrer and stirred, and the nano-silica-containing cement grinding aid is obtained after stirring is finished. The adsorption of phenolic resin molecules on the surfaces of cement particles can reduce the surface energy of the particles and reduce aggregation and adsorption among the particles, so that the dispersity of materials in the grinding process is improved, the grinding efficiency of a mill can be improved, and meanwhile, the energy consumption is reduced; wherein the quaternary ammonium salt can form a layer of film on the surfaces of cement particles to reduce friction and aggregation among the particles, so that the dispersity and fluidity of the powder are improved, the fineness of the cement is improved, the energy consumption in the grinding process is also reduced, and the sulfur element contained in the cement is also beneficial to improving the grinding efficiency.

The present invention relates to the technical field of cement production, and specifically to a cement grinding device for cement production, comprising a body for grinding cement, wherein the bottom of the body is fixedly connected to a supporting leg, and the top of the body is connected to a feed hopper; both sides of the body are fixedly connected to a circulation box, and an outlet groove is provided on the upper side of the circulation box close to one side of the body, and cement clinker is ground by fixed rollers and movable rollers, and the ground cement clinker falls onto a screen plate, and at this time, the screen plate is lifted and lowered back and forth by first hydraulic cylinders on both sides to make the screen plate reciprocate back and forth, and the ground cement clinker is screened out through the screen plate, and unqualified large particles enter the lifting plate of the inner cavity of the circulation box through the first inclined plates and the first docking plates on both sides of the screen plate, so that the ground cement clinker can be screened, so as to avoid all the cement clinker being ground again after grinding, thereby improving work efficiency, reducing the load of the device, and increasing the service life of the device.

The utility model relates to the technical field of cement processing, in particular to an energy-saving cement grinding device which comprises a shell, supporting legs, an upper grinding disc and a lower grinding disc, an inner plate is fixedly connected to the inner wall of the shell, a motor is fixedly installed at the top of the inner plate, a bevel gear support is arranged at the output end of the motor, and the bevel gear support is fixedly connected with the supporting legs. A bevel gear set is rotationally connected into the bevel gear support, a first connecting shaft and a second connecting shaft are fixedly connected to the bottom of the second bevel gear and the bottom of the third bevel gear correspondingly, and a lower grinding disc is fixedly connected to the end, away from the second bevel gear, of the first connecting shaft. According to the cement grinding device, coaxial and opposite-direction rotation of the upper grinding disc and the lower grinding disc can be achieved through the arranged bevel gear set, energy is saved, cement grinding is more sufficient, and the grinding efficiency is improved. And through the arranged scraping plate, it can be guaranteed that cement enters a grinding area from holes formed in the upper grinding disc.

The utility model discloses an adjustable cement grinding device in the technical field of cement grinding, which comprises a box body, a grinding plate is arranged in the box body, the lower end of the box body is fixedly connected with a fixing plate, and the grinding plate is fixedly connected with the fixing plate; a sliding rod is movably connected to the fixing plate, sliding frames are movably connected to the two ends of the sliding rod, a connecting plate is fixedly connected to each sliding frame, a driving assembly is fixedly connected to the upper end of each connecting plate, a mounting block is movably connected to the driving assembly, and the mounting block is fixedly connected to the box body. The driving assembly can drive the rolling plate to descend according to actual use, so that the grinding fineness of the cement powder is adjusted; and through different rotating angles of a driving block, a driving groove enables a sliding rod to be located at different heights, cement powder is ground to different fine degrees, and the effect that the particle size can be adjusted when the cement powder is ground is achieved.

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 utility model relates to the technical field of cement processing, in particular to a cement grinding aid adding and adjusting assembly which comprises a box body, a hydraulic cylinder, a water tank and a mounting box, the mounting box is arranged on the outer wall of one side of the box body, the water tank is fixed in the mounting box, the hydraulic cylinder is arranged on one side of the water tank, a buffering groove is formed in the upper end of the hydraulic cylinder, and the buffering groove is communicated with the water tank. A piston is movably installed in the buffer tank, a water pump is arranged between the hydraulic cylinder and the water tank, and a wagon balance is arranged at the lower end of the box body. According to the cement grinding aid adding device, the constant-proportion variable-quantity adding effect of a cement grinding aid is achieved through cooperation of the structures, and the problems that an existing cement grinding aid adding device for a cement grinding mill lacks the self-adaptive effect of adding a proper amount of the cement grinding aid, so that the amount of the added grinding aid cannot reach the proper amount; the cement stirring effect is easily reduced; and resources are wasted.