90 results about "Coal processing" patented technology

The invention relates to the technical field of coal processing and utilization, and discloses a clean coal yield prediction method based on a support vector machine, which comprises a data acquisition module used for analyzing factors influencing the clean coal yield, acquiring related data and integrating the data into a data set, and a data preprocessing module connected with the data acquisition module and used for preprocessing the data. The data preprocessing module is used for randomly dividing a data set according to a 70% training set and a 30% test set and carrying out standardization and normalization preprocessing, the parameter optimization module is connected with the data preprocessing module and optimizes hyper-parameters of a support vector machine through an improved grey wolf algorithm, and the model building module is connected with the parameter optimization module and is used for building a model. The model building module is used for building and training a support vector regression model based on the optimized hyper-parameters, and the model verification module is connected with the model building module and uses a test set to verify the performance of the model. According to the method, the hyper-parameters of the support vector machine are optimized through the improved grey wolf algorithm, the problem that a traditional optimization method is prone to falling into local optimum is effectively avoided, and the precision of clean coal yield prediction is remarkably improved.

The invention discloses a coal crushing and screening equipment load adaptive cooperative control method, and relates to the field of coal processing, and the method comprises the steps: forming a coal database based on historical crushing data; the target coal type, the actual crushing coefficient and the actual quality are obtained; identifying to obtain a first crushing coefficient of the first sample state and a second crushing coefficient of the second sample state; constructing a crushing action function based on the test data; generating target power during actual crushing; and verifying the target power, and when the target power has the risk of insufficient crushing, correcting the target power of coal crushing to obtain a target corrected power. According to the method, the coal database is formed, the coal is identified, the crushing action function is constructed, the target power during actual crushing is generated, the target power is verified, the power during coal crushing is specifically set, and the power is corrected, so that the crushed coal particles can meet the production requirements.

The utility model relates to the technical field of drainage systems, in particular to a drainage system for a coal processing plant. Comprising a wastewater treatment unit, and further comprises a final treatment water outlet pool, a sampling detection unit, a diversion execution mechanism and a controller, the sampling detection unit comprises a sampling module and a water quality detection unit, and the final treatment pool is communicated with the wastewater treatment unit and used for storing treated coal processing wastewater; the sampling module is used for collecting a coal processing wastewater sample from a final treatment water outlet pool, the water quality detection unit is used for detecting water quality parameters in the coal processing wastewater sample, the shunting execution mechanism comprises a drainage electromagnetic valve and a reflux pump, a channel where the drainage electromagnetic valve is located is communicated with a drainage port, and a channel where the reflux pump is located is communicated with the wastewater treatment unit. The output end of the water quality detection unit is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the input ends of the drainage electromagnetic valve and the reflux pump.

The invention discloses a method for separating oil-rich coal into organic matter components with different condensation degrees based on hierarchical density, and relates to the technical field of coal processing layering. Under the action of external field driving force, non-overlapping density hierarchical components with different organic matter condensation degrees and heavy ash contents are quickly separated; the density of the high ash density component is greater than or equal to 1.6 g / cm; the density of the heavy organic component is greater than or equal to 1.4 g / cm and less than 1.6 g / cm; the density of the medium-light organic component is greater than or equal to 1.3 g / cm and less than 1.4 g / cm; the density of the light organic component is greater than or equal to 1.2 g / cm and less than 1.3 g / cm; the density of the light organic component is less than 1.2 g / cm < 2 >. According to the method, based on the organic structural characteristics of the oil-rich coal, accurate non-overlapping cutting of components with different organic condensation degrees of the oil-rich coal is realized by adopting physical external field force, so that the accuracy and repeatability of a layering result are ensured; and the oil-rich coal is efficiently and cleanly converted into high-added-value fine chemicals and high-end carbon materials.

The invention discloses a coal by-product resource utilization method based on reduction roasting-magnetic separation enrichment, and belongs to the technical field of coal processing by-product resource utilization. The invention provides a combustion oxidation decarburization-high-temperature reduction roasting-ore grinding dissociation-high gradient magnetic separation combined iron extraction process. Comprising the steps that liquefied slag is oxidized and decarbonized to generate ash (iron-containing minerals are oxidized into Fe2O3), reduction roasting is conducted (Fe2O3 is converted into Fe3O4), ore grinding dissociation is conducted (intergrowth of Fe3O4 and gangue minerals is dissociated, monomer dissociation is achieved, and the magnetic separation efficiency and the iron ore concentrate quality are improved), high-gradient magnetic separation is conducted (Fe3O4 concentrate and non-magnetic gangue tailings are obtained), and efficient iron extraction is achieved. In addition, effective recovery and efficient utilization of resources are achieved, heat generated in the oxidation decarburization and reduction roasting process is used for material drying, concentrate drying and steam generation, heat energy consumption is reduced, and efficient utilization of the combustion heat value is achieved.

The utility model provides a crushing device for coal processing, which relates to the technical field of coal processing and comprises a crushing device feed hopper and a crushing cabin assembly, a feed hopper distributing inclined plate is fixedly mounted in the crushing device feed hopper, and the crushing cabin assembly is fixedly mounted below the crushing device feed hopper. A driving motor is fixedly installed on the surface of the rear side of the crushing cabin assembly, a discharging hopper is integrally arranged on the side face of the crushing cabin assembly, and a discharging conveying hose is fixedly connected to the outer end of the discharging hopper. According to the scheme, sampled briquettes are fed into the feeding hopper of the crushing device in a manner of feeding through the conveying belt, and are separated through the feeding hopper separation inclined plate in the feeding hopper of the crushing device, so that the fed briquettes enter separately, and the briquettes cannot be stuck at a feeding opening and are crushed through the crushing cabin assembly firstly; and then the briquette coal is ground into fine powder, so that the internal texture of the briquette coal can be conveniently inspected.

The utility model discloses an anti-blocking rapping device of a raw coal bunker, and belongs to the technical field of raw coal processing. Comprising a material storage seat, the material storage seat is hemispherical, a material storage cavity is formed in the material storage seat, a vibrating block is arranged in the material storage cavity, the vibrating block is hemispherical, the bottom face of the vibrating block is attached to the bottom face of the material storage cavity, a cavity is formed in the vibrating block, four sets of sliding grooves are formed in the surface of the vibrating block, the sliding grooves communicate with the cavity, and vibrating plates are arranged in the sliding grooves in a sliding mode; a cavity is formed in the storage seat, a pair of connecting rods is mounted in the cavity, a first driving part is arranged between the pair of connecting rods and periodically extrudes four groups of rapping plates, the rapping plates are elastically connected with the pair of connecting rods, a discharging port is formed in the bottom surface of the storage seat, a blocking plate slides in the discharging port, and a discharging pipe is mounted on the bottom surface of the storage seat; and a second driving part is installed in the discharging pipe and drives the blocking plate to vertically move, a conical cavity is formed in the position, close to the top end of the discharging pipe, in the discharging pipe, and the conical cavity communicates with the discharging opening.

This invention provides a quantitative analysis method for clean coal and middlings based on LIBS molecular radiation characteristics. The steps include: collecting spectral data from lump raw coal samples; selecting standard coal samples, acquiring spectra using laser-induced breakdown spectroscopy (LIBS) and determining the reference spectrum of molecular free radicals, and extracting the characteristic intensities of molecular free radicals from the reference spectrum; extracting spectral intensities within the wavelength range corresponding to molecular free radicals from the spectral data of the raw coal samples; calculating the similarity between the raw coal sample spectrum and the molecular free radical spectrum in the reference spectrum; classifying the spectral data according to the similarity; preprocessing the classified spectral data and establishing a quantitative analysis model to obtain prediction results for different types of coal. This method can efficiently achieve rapid identification and industrial parameter analysis of clean coal and middlings in raw coal, significantly improving the automation and intelligence level of coal processing, and providing strong support for efficient energy utilization and energy conservation and emission reduction.

The utility model discloses an anti-scattering guide chute with a coal recovery function, which relates to the technical field of coal processing and comprises a mounting rack, a shielding frame is fixed at the bottom of the mounting rack, an anti-falling collecting mechanism is arranged on one side of the shielding frame, and a mounting mechanism is arranged on the outer side of the anti-falling collecting mechanism. The anti-falling collecting mechanism comprises a material guide frame fixed to the edge of the bottom of the shielding frame, and a falling-back pipe is fixed to the bottom of the material guide frame. According to the anti-scattering material guide groove with the coal recycling function, the abutting block is attached to the surface of the conveying belt, when the sampling head rotates for sampling, the abutting block is used for shielding, the scattering amount of coal is reduced, and when the conveying belt deforms, a small part of coal is squeezed and discharged into the material guide frame from the bottom of the abutting block and falls into a recycling box through a falling-back pipe; and therefore, the coal is fully prevented from being scattered to the ground, the clean environment is guaranteed, the coal falling from the conveying belt can be conveniently recycled, and the practicability of the device is improved.

The utility model belongs to the technical field of pulverized coal processing equipment, and particularly relates to a double-shaft pulverized coal mixing and kneading mechanism. The double-shaft type pulverized coal mixing and kneading mechanism comprises a mixing and kneading pot, a stirring assembly for mixing pulverized coal, liquid asphalt and water is installed in the mixing and kneading pot, the stirring assembly comprises a kneading cavity, the bottom of the kneading cavity is open, the kneading cavity is formed in the inner top of the mixing and kneading pot, and the stirring assembly is arranged in the kneading cavity. A mixing and kneading pot is installed on the upper portion of the mixing and kneading pot, a discharging assembly used for controlling discharging of kneaded pulverized coal is installed at the inner bottom of the mixing and kneading pot, the stirring assembly further comprises a motor, the motor is installed at the front end of the outer wall of the mixing and kneading pot, and the output end of the motor is fixedly connected with a first rotating shaft. And meanwhile, through cooperation with the discharging assembly, a discharging opening can be automatically opened and closed, rapid discharging is achieved, and the using convenience of the device is improved.

The utility model relates to the field of coal processing, and discloses a crushing device which comprises a storage mechanism used for storing coal raw materials and a crushing mechanism arranged in the storage mechanism and used for crushing the coal raw materials, and further comprises a filter screen arranged in the storage mechanism and located below the crushing mechanism, the filter is used for filtering coal raw materials; the cleaning mechanism is arranged on the storage mechanism, is positioned below the filter screen and is used for cleaning the filter screen; the cleaning mechanism comprises a pushing piece and a cleaning piece, wherein the pushing piece is arranged on the storage mechanism in a penetrating mode; the cleaning brush is arranged on the pushing part, is positioned below the filter screen and is used for cleaning impurities in the filter screen. According to the coal filtering device, the impurities left in the filter screen are cleaned, the cleanliness of the filter screen is kept, and the coal filtering efficiency of the filter screen is improved.

The utility model relates to the technical field of coal mining, and discloses a coal mine crushing device for coal mining, which comprises a main body provided with a feed port, a first discharge port, a second discharge port and a crushing and screening component, the crushing and screening assembly comprises a servo motor, and the servo motor is fixedly installed on the main body. According to the coal mine crushing device for coal mining, in order to achieve efficient crushing and precise screening of coal mine raw materials, the crushing and screening assembly is arranged; and in cooperation with a servo motor, a rotating rod, a first crushing roller, a front gear, a rear gear, a rotating rod, a second crushing roller, a transmission assembly, a movable rod, a pull rod, a rotating block, a fixed rod, a screening bin, a screen, a large spring, a baffle, a telescopic plate, a telescopic groove and a protective shell, the granularity uniformity of products is ensured, and the coal processing quality is effectively improved.

This utility model belongs to the technical field of coal processing equipment and discloses a powder and lump separation device for coal processing, including a separation box. A square frame is movably fitted onto the top of the middle section of the separation box. A triangular block is fixedly installed at the top of the square frame, and the outer surface of the triangular block is movably fitted onto the inner surface of the separation box. Screen plates are hinged to the tops of the left and right ends of the square frame. This utility model uses a rectangular plate, a vertical plate, a horizontal bar, a short rod, and a long rod. When the drive motor starts, the drive shaft will rotate the long rod. Since the short rod is movably fitted inside the long rod, as the long rod rotates, the inner wall of the long rod will generate a thrust on the outer surface of the short rod, pushing the short rod, along with the horizontal bar, vertical plate, and rectangular plate, towards the screen plate. This allows the unblocking rod at the bottom of the rectangular plate to clean the screen holes on the screen plate, preventing blockage and ensuring the normal operation of the separation equipment.

The utility model discloses a lifting device for coal processing, which comprises a lifting frame and a hopper arranged in the lifting frame, the bottom of the hopper is connected with a supporting seat, an arc-shaped groove is arranged in the supporting seat, the arc-shaped groove is connected with a connecting shaft in a sliding mode, two ends of the connecting shaft are connected with supporting wheels in a rotating mode, and the supporting wheels are connected with the lifting frame. The supporting wheel is matched with a supporting groove formed in the front side of the lifting frame, the lifting frame is connected with a driving mechanism used for driving the hopper to ascend and descend, the driving mechanism is connected with the connecting shaft, and the rear side of the lifting frame is connected with a guiding mechanism used for guiding the hopper. The guide mechanism comprises two guide rails, two guide grooves, two rotating wheels, two fixing shafts and a positioning mechanism, the rotating wheels are connected into the guide grooves, and the positioning mechanism is used for synchronously positioning the two guide rails. According to the utility model, the lifting and pouring of coal are smoother and coherent, the efficiency is high, the pouring at different height positions is realized, and the use in different occasions is met.

The invention relates to the technical field of coal processing, and discloses a coal vibration screening machine which comprises a mounting plate, an inclination angle adjusting assembly and a screening assembly, the inclination angle adjusting assembly comprises an adjusting driving part and a box body, the adjusting driving part is mounted on the mounting plate and connected with the outer side wall of the box body, and the box body is provided with a first feeding port and a plurality of discharging ports; the box body is hinged to the mounting plate, and the adjusting driving piece can drive the box body to rotate so as to change the inclination angle of the box body; the screening assembly is located in the box body and used for screening the coal in the first feeding port, and the screened coal is discharged from all the discharging ports correspondingly. The adjusting driving piece can drive the box body to rotate around the hinged position of the box body and the mounting plate, and therefore the inclination angle of the box body is changed. When the box body forms a reasonable inclination angle, the large coal can be effectively prevented from being accumulated and blocked on the screen surface under the double clamping of the gravity of the large coal and the vibration effect of the screening assembly, and the shutdown cleaning time in the screening process is shortened.

Embodiments disclosed herein relate to methods of processing coal. A method to process coal includes subjecting raw coal to a liquefaction process effective to form a pitch resin, subjecting the pitch resin to a variable crystallinity spinning process effective to form raw fiber, and subjecting the raw fiber to a carbonization process effective to form a low thermal conductivity carbon fiber.

The present application relates to coal processing technical field, proposed gravity interference bed sorting and leaching combined production device and production process of ash and chlorine reduction, combined production device includes base frame;Interference unit is set on the base frame, and the interference unit includes: cylinder, has interference chamber, and the interference chamber has water inlet and overflow port;Material feeding cylinder is arranged at the upper end of the cylinder and is communicated with the interference chamber, and the material feeding cylinder is used for guiding the material into the interference chamber;The flow disturbance piece is arranged in the interference chamber, and a plurality of flow disturbance holes for water flow are formed in the flow disturbance piece, and the flow disturbance piece separates the interference chamber into upper chamber and lower chamber;Through the above technical scheme, the problems that the coal dechlorination and the coal washing and selecting steps are carried out separately in the related art, the overall operation efficiency is slow, the water resources occupied are more, and the water resource utilization rate is low are solved.

The invention discloses a multi-coal-source coal blending data processing method based on a WSMOTE algorithm, and belongs to the technical field of coal processing data processing, and the method comprises the steps: data collection and classification: collecting multi-dimensional data of a raw coal floating and sinking test, a coal blending test and the like, carrying out the preprocessing, dividing the data into a missing data set and a complete data set, carrying out the interpolation optimization of a missing value, and carrying out the calculation of the complete data set. And carrying out adaptive processing according to data distribution types, or carrying out weighted combination normalization according to feature importance, analyzing the number and distribution characteristics of minority class samples, dynamically adjusting the neighbor sample size and the new sample synthesis amount, and completing data enhancement and standardization. According to the method, standardized parameters are dynamically adjusted to adapt to data distribution changes, abnormal values are accurately processed, the combined interpolation model is subjected to weight optimization, errors are reduced, and data integrity is improved. WSMOTE parameters are adaptively combined with data distribution to synthesize samples, data are balanced, and the over-fitting risk is reduced. In practical application, the quality of coal blending model training data can be improved, and optimization of a multi-coal-source coal blending scheme is assisted.

The utility model discloses a material recycling and conveying device for a coal conveying gallery, and relates to the technical field of coal processing, the material recycling and conveying device comprises a negative pressure source, an absorption assembly, a collection shell and a purging assembly, a collection cavity with a discharge port is formed in the collection shell, a filtering assembly and a flapping assembly are arranged in the collection cavity, and the negative pressure source is arranged in the collection cavity. The filtering assembly and the flapping assembly are arranged in the collecting cavity in a spaced mode, the filtering assembly is used for filtering air, and the flapping assembly is used for flapping the filtering assembly; according to the technical scheme provided by the utility model, the flapping component flaps the filtering component, so that dust attached to the filtering component is driven down, the dust is not easy to attach to the dust removal cloth bag, the dust removal cloth bag is not easy to block, and the blowing component is combined to jointly clean the accumulated dust on the filtering component, so that the dust removal efficiency is improved. The dust removal efficiency is improved.

This utility model relates to the field of coal washing and screening, and more particularly to an adjustable vibration frequency coal washing and screening machine. It includes a base, guide rods, a vibrating frame, a first telescopic spring, a vibrating motor, and a screen. Two guide rods are connected to the left and right sides of the base, and the vibrating frame is slidably connected between the guide rods. A first telescopic spring connects each guide rod to the vibrating frame. A vibrating motor is connected to the front of the vibrating frame, and the screen is slidably engaged with the upper and lower parts of the vibrating frame. This utility model installs the screen by engaging it with the vibrating frame and then fixing it with a limiting frame. The vibration frequency of the vibrating motor is then adjusted, and coal is poured onto the screen for washing and screening. This allows for simultaneous installation and fixing of the screen while adjusting the vibration frequency to wash and screen coal of different particle sizes and densities. It facilitates screen replacement, reduces maintenance costs, improves coal processing efficiency, and is easy to use.

The utility model discloses a fine crushing device for coal processing, which comprises a frame, a feed port and a discharge port, the feed port and the discharge port are arranged at the top end and the bottom end of the frame, two rotatable crushing rollers are connected in the frame and are distributed in a staggered manner, and a plurality of crushing grooves and a plurality of crushing bulges are arranged on the surfaces of the crushing rollers. A crushing area is formed by the crushing protrusions and the crushing grooves of the other crushing roller, the rack is connected with a scraping plate used for scraping materials on the surfaces of the two crushing rollers, and the rack is connected with a driving mechanism used for driving the two crushing rollers to rotate. Local high stress can be generated when materials are extruded by the edge of the crushing groove, the materials can be promoted to be broken, fine materials can be obtained, the machining quality is improved, a traditional smooth crushing roller design is replaced, meanwhile, residual materials on the crushing roller can be scraped by the scraping plate, the crushing roller is cleaned, the situation that the crushing efficiency is affected due to material accumulation is avoided, and the service life of the crushing roller is prolonged. The practicability is high.

The utility model relates to the technical field of coal mining and processing, in particular to a coal washing pool for coal processing, which comprises a water injection tank, the left end of the water injection tank is fixedly connected with a water inlet pipe, the inside of the water injection tank is fixedly connected with a partition plate, the right end of the water injection tank is fixedly connected with a washing pool, and the left side of the washing pool is fixedly connected with an inclined plate. The coal briquette cleaning device comprises a cleaning pool, the lower surface of the cleaning pool is fixedly connected with convex blocks which are distributed in a linear mode, the interior of the cleaning pool is rotationally connected with a rotating shaft, and the two ends of the rotating shaft penetrate through the surface of the cleaning pool. And meanwhile, a second gear is driven to rotate through a coupler, the second gear and a first gear drive a rotating shaft to rotate under the meshing effect, a stirring plate fixedly connected with the rotating shaft and a limiting wheel stir the cleaning liquid, and the effect of fully cleaning attachments on the surfaces of the coal briquettes is achieved.

The present application belongs to the technical field of coal processing and analysis, and provides a process method for coupling of coal pyrolysis and pulverized coal gasification, comprising: determining a pyrolysis reaction rate interval and a gasification rate interval; extracting carbon conversion efficiency under different char residence time in the coupling reaction of coal pyrolysis and pulverized coal gasification corresponding to the pyrolysis reaction rate interval and the gasification rate interval, constructing a char residence time-carbon conversion efficiency curve, identifying a carbon conversion efficiency inflection point, and linearly fitting the char residence time-carbon conversion efficiency curve to analyze and determine a minimum limited char gasification residence time, and combining the carbon conversion efficiency inflection point to determine a char gasification residence interval as a char residence time adjustment target of a next preset analysis period; in the next preset analysis period, according to the difference between the pyrolysis reaction rate interval and the gasification rate interval, performing dynamic update judgment and dynamic update operation of the char residence time adjustment target to ensure that the carbon conversion efficiency meets the standard and avoid energy waste.

The utility model discloses a coal crushing and screening device, which belongs to the technical field of coal processing, and comprises a working table, a crushing box arranged on the working table, a filter screen arranged between the crushing box and the working table, and a quantity control assembly arranged in the crushing box and used for intermittently discharging crushed materials, comprising a discharging shaft rotationally arranged in a crushing box and a plurality of discharging grooves formed in the discharging shaft at equal angles, and the crushing shaft in the crushing box and the discharging shaft are arranged in a transmission mode; the cleaning assembly is arranged in the workbench, is located on the lower side of the filter screen, is used for dredging the filter screen and comprises two steel brush plates rotationally arranged in the workbench; and the driving assembly is arranged on the workbench and used for driving the crushing box, the quantity control assembly and the cleaning assembly to work at the same time, so that the equipment is higher in screening and crushing efficiency, and the situation that a filter screen is blocked during screening and crushing, and consequently the working efficiency of the equipment is affected is avoided.

The utility model relates to the field of coal treatment, and discloses a pulse anti-blocking intercommunication bin for bin separation and peak regulation, which comprises a base, an anti-blocking structure is arranged at the center of the interior of the base, a first bin is arranged at one side of the center of the upper end face of the base, and a second bin is arranged at the other side of the center of the upper end face of the base. According to the anti-blocking structure composed of the two motors, the screw rod and the two gate valves, coal blocking is effectively prevented, when the gate valve of one bin is opened, the gate valve of the other bin is closed, and the motors drive the screw rod to rotate and push coal to flow, so that blocking is avoided, the fluidity of coal is improved, the service life of equipment is prolonged, and the anti-blocking effect is good. Through the fixing block, the electric telescopic rod, the connecting rod, the sliding groove and the U-shaped groove, accurate adjustment of a high-quality coal material opening and a low-quality coal material opening can be achieved, telescopic movement of the electric telescopic rod is achieved through cooperation of the connecting rod and the sliding groove, adjustment of the material openings is achieved, and flexibility and accuracy of adjustment of the material openings are improved.

The invention discloses an oil-rich pulverized coal fine grinding and screening device and method, and belongs to the technical field of oil-rich pulverized coal processing. The fine grinding and screening device for the oil-rich pulverized coal comprises a rack, a shell and a connecting shaft, and further comprises a cylindrical filter screen, wherein a gap is reserved between the cylindrical filter screen and the inner wall of the shell; the grinding part comprises two grinding mechanisms, each grinding mechanism comprises a grinding ring, a grinding wheel and a driving mechanism, the grinding rings are arranged at one end of the cylindrical filter screen, ring holes of the grinding rings communicate with ring holes of the cylindrical filter screen, the driving mechanisms are connected with the grinding wheels, and the driving mechanisms are used for driving the grinding wheels to axially roll on the inner walls of the grinding rings around the connecting shafts; the outer wall of the annular scraper is attached to the inner wall of the cylindrical filter screen; the reciprocating driving mechanism is used for driving the annular scraper to reciprocate in the axial direction of the connecting shaft. According to the fine grinding and screening device for the oil-rich pulverized coal, in the fine grinding and screening process of the oil-rich pulverized coal, the problem that the screening net is blocked due to the viscosity of the oil-rich pulverized coal can be solved, and the operation stability of equipment is improved.

The utility model discloses a cyclone type coal granularity grading processor, it includes base, drive assembly, separation cavity, cyclone assembly and collection subassembly. The separation cavity is provided with multistage spiral blade, splitter and guide strip, and the stable cyclone motion is formed through the power motor drive, realizes the multistage classification of coal particle, the spoiler enhances centrifugal force effect, and promotes the classification efficiency, the annular collection groove cooperates with the spiral conveying mechanism, avoids the blockage of the material guide pipe, and the slagging mouth and cooling fan are used for cleaning the impurity and reducing the operation temperature respectively. The application can improve the coal classification precision and equipment operation reliability, solve the problem of the insufficient precision of traditional grading device, ensure continuous and efficient operation simultaneously, and be applicable to the granularity grading treatment demand in the coal processing.

The application discloses a kind of methods for hydrothermal treatment regulation and control of phenolic hydroxyl in coal, it is related to the field of coal processing and utilization, the method comprises the following steps: S1, vacuum drying treatment is carried out to coal sample, and pretreated coal sample is obtained;S2, the pretreated coal sample is mixed with reaction medium and sealed, and a mixture is obtained;S3, the mixture is heated for hydrothermal reaction, and after heat preservation and pressure preservation, cooling, pressure relief, the solid product is taken out and washed to neutral, vacuum drying treatment is carried out, and the regulated and controlled coal sample is obtained.The process flow of the application is simple, the requirement for equipment is low, easy to enlarge implementation, only needs conventional high-pressure reaction kettle, without special atmosphere protection or complex separation device, can be directly applied on existing coal chemical industry hydrothermal treatment equipment, has better industrial adaptability, and then can be popularized to different coal kinds and scale production line, provides universal technical scheme for directional regulation and control of functional groups in coal, thereby powerfully promotes the process of fine processing and utilization of coal.

This utility model relates to the technical field of coal processing and mineral processing equipment, and discloses a high-efficiency and energy-saving coal flotation machine device, including a flotation tank. An installation plate is fixedly connected to the upper surface of the flotation tank. An agitator is fixedly installed on the upper surface of the right part of the installation plate, and an agitator motor is fixedly installed on the upper surface of the upper surface of the left part of the installation plate. An agitator belt is movably sleeved on the outer surface of the output shaft of the agitator motor. The end of the agitator belt away from the agitator motor is sleeved on the outer surface of the agitator. This utility model achieves self-cleaning by using the centrifugal force and gravity generated by the rotation of the equipment itself through a combination structure of friction blocks and springs built into the scraper. No additional power source is required. Friction heats up the surface temperature of the scraper, reducing the viscosity of the coal slurry. Combined with airflow purging and mechanical scraping, a triple self-cleaning mechanism is formed, which significantly reduces the frequency of manual cleaning and equipment downtime, and improves the efficiency of coal flotation.

This utility model relates to the field of coal processing technology, and in particular to a coal slurry water treatment device for coal washing and beneficiation. It includes a treatment tank, with a fixed plate fixedly connected to the upper front part of the treatment tank. A stirring device is fixedly connected to the right end of the side tank. A water inlet pipe and a water outlet pipe are fixedly connected to the upper and lower left ends of the treatment tank, respectively. A slot is formed at the upper end of the treatment tank, and a filter device is fixedly connected to the lower end of the fixed plate. The stirring device includes a drive motor, the output end of which passes through the side tank and is fixedly connected to a main gear. This coal slurry water treatment device for coal washing and beneficiation improves filtration efficiency through a liftable honeycomb filter and an easy-to-clean structure, and enhances mixing uniformity and reagent utilization through a wave-shaped annular stirring blade and a stable transmission structure, thus efficiently treating coal slurry water.