221 results about "Coal processing" patented technology

The invention relates to the technical field of pulverized coal processing, in particular to a low-quality coal high-precision dry-method deashing and upgrading method and process, and the method comprises the following process steps: S1, conveying and pretreatment; s2, vibrating and blowing; s3, primary screening; s4, screening for the second time; s5, dewatering and drying; s6, monitoring, regulating and controlling; and S7, collection and recovery. Comprising a shell and a spiral feeder, two vibration motors are symmetrically installed on the shell, two damping bases are symmetrically installed at the bottom end of the shell, the device further comprises a pretreatment mechanism, and the pretreatment mechanism is arranged on the shell and the spiral feeder. According to the device, coal powder can be preheated and preliminarily crushed and separated, so that preparation is made for the subsequent dewatering and drying process, the coal powder can be promoted to be subjected to secondary crushing and separation in the subsequent flowing and drying process, and unqualified coal powder and dust in the coal powder are separated, discharged and recycled; therefore, the overall quality of pulverized coal drying and deashing is effectively improved.

The utility model relates to a duplex loosening mechanism for frozen coal, which belongs to the technical field of coal processing equipment and comprises a fixed frame, a duplex driving assembly is arranged at the lower end of the fixed frame, and a plurality of loosening heads are arranged at the lower end of the duplex driving assembly. And a plurality of lifting oil cylinders which are fixedly connected with the upper end of the duplex driving assembly are arranged in the fixed rack. The duplex driving assembly comprises a protective shell, a loosening connecting plate is arranged between the protective shell and the loosening head, and a loosening head driving motor fixedly connected with the loosening connecting plate is arranged at the rear end of the loosening head. The device has the characteristics of compact structure, convenience in operation and good running stability. The problem of crushing frozen coal is solved. And the situation that coal is bonded into blocks is avoided, and coal unloading and box body cleaning during train coal conveying are facilitated.

The utility model discloses a dust falling device of a coal washer, which relates to the technical field of coal treatment and comprises a device main body, the device main body comprises a detachable structure for maintenance, a filtering box body connected with the device main body, a dust falling box body connected with the filtering box body, a dust collection assembly connected with the dust falling box body, a dust falling assembly connected with the dust collection assembly and a filtering mechanism connected with the filtering box body; the dust suppression device has the advantages that smoke, dust and particulate matter in the device body are detected in real time through the smoke sensor, when it is detected that the concentration of the smoke, the dust and the particulate matter is higher than 3 mg / m < 3 >, a second motor in the dust suppression assembly is started immediately, the second motor drives a second rotating shaft to rotate clockwise from a vertical state to a transverse state, and the dust suppression effect is achieved. The processor starts the high-pressure pump, and the water outlet pipe and the mist nozzle at the bottom of the square water collecting plate suck water in the water tank for dust fall spraying.

The utility model discloses a screening device for coal processing, which relates to the technical field of coal processing and comprises a base, a support frame is fixedly mounted at the top of the base, a guide hopper is fixedly mounted at the upper end of the support frame, and a feeding mechanism is fixedly mounted in the middle of the rear side of the guide hopper. By the adoption of the structure, materials are guided into the guide hopper and then discharged to the arc-shaped filter screen, the obliquely-arranged filter screen assists in filtering and screening, the two sets of filter screens are different in hole diameter, the hole diameter of the upper end is large, the hole diameter of the lower end is small, classified screening is achieved, screened coal is fed into the collecting frame through the discharging frame, efficient classified filtering is achieved, and in the screening process, the screening efficiency is improved. The first motor is started to drive the rotating shaft to rotate, the scraping plate scrapes the interior of the filter screen, filter screen holes are effectively prevented from being blocked, the overall filtering and screening efficiency is improved, and the device is exquisite in design, easy and convenient to operate and capable of remarkably improving the coal processing quality and efficiency and is important equipment in the coal processing field.

The invention relates to the technical field of weathered coal processing, in particular to a humic acid co-production process for pre-selection optimization of weathered coal. The process comprises a pre-selection device, a reaction device, a solid-liquid separation device, a drying device, a heat supply device and a control system. The weathered coal is accurately graded through the weathered coal multi-stage screening device and the weathered coal winnowing device, impurities are removed through the weathered coal feeder and the sodium hydroxide and other additive filling device, solid-liquid separation is conducted through the centrifugal separator, drying treatment is conducted through the humic acid drying machine, and humic acid and activated carbon are generated through the coal-fired steam boiler. The intelligent control system adjusts operation parameters of all devices through the central processing unit, and the resource utilization rate, the energy efficiency and the product quality are improved.

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 utility model relates to the technical field of coal processing and crushing, and discloses a crushing device for coal processing, which is characterized in that one side of a sliding plate far away from a sliding chute is fixedly connected with a supporting rod, one side of the supporting rod far away from the sliding plate is connected with a connecting plate, and the middle part of the connecting plate is fixedly connected with a cylinder I; a first hydraulic rod is fixedly connected to the output end of the first air cylinder, a pressing plate is fixedly connected to the side, away from the first air cylinder, of the first hydraulic rod, and a rolling cone is fixedly connected to the side, away from the first hydraulic rod, of the pressing plate. According to the coal crushing device, a first air cylinder is arranged, a hydraulic rod drives a pressing plate and a grinding cone to move up and down so as to grind and crush coal, and a first driving motor is arranged, so that a reciprocating lead screw rotates, and a sliding plate reciprocates along a sliding groove and the reciprocating lead screw through limiting of a bottom plate; and the sliding plate drives the supporting rod, the connecting plate, the first air cylinder, the first hydraulic rod, the pressing plate and the grinding cone to move in a reciprocating mode for grinding and smashing, and the effect of the coal processing and smashing device can be effectively improved.

The invention relates to the technical field of coal processing, in particular to a coal preparation plant production process monitoring method based on digital twinning, which comprises the following steps: establishing a hierarchical model comprising an equipment physical structure, a process logic chain and material rheological characteristics, and constructing a digital twinning body; the method comprises the following steps: acquiring vibration, current, density and pressure data through an industrial Internet of Things terminal deployed at a key node of equipment, mapping the data to a digital twinborn node according to a hierarchical relationship, and generating a dynamic twinborn data set; performing multi-source data fusion and coupling analysis based on the dynamic twin data set to obtain a state evaluation result including an equipment health state level, a process deviation degree and an energy efficiency index; and extracting simulation parameters based on a state evaluation result, executing parameter rehearsal simulation in the digital twin, generating an optimal control instruction, and issuing the optimal control instruction to a physical execution mechanism, thereby realizing comprehensive monitoring of the equipment state, the process index and the energy consumption, and improving the process stability, the equipment safety and the energy utilization efficiency.

The invention discloses a method for extracting gallium, germanium and rhenium from coal processing byproducts. The method comprises the following steps: crushing and grinding coal processing byproducts, mixing the coal processing byproducts with chemicals, and baking at high temperature; after the coal processing byproducts are completely cooled, leaching and filtering the coal processing byproducts by using ultrapure water or a dilute acid solution to obtain a leaching solution containing gallium, germanium and rhenium; the method comprises the following steps: extracting, concentrating and evaporating to obtain a gallium-germanium-rhenium concentrated solution, preliminarily separating a germanium solution, a gallium solution and a rhenium solution respectively by a chlorination distillation method and a chemical precipitation method, and finally purifying the preliminarily separated gallium-germanium-rhenium solution to obtain high-purity gallium, germanium and rhenium products. By adopting the method, the extraction efficiency of the Gallium-Gallium-Gallium-Gallium is improved, the process is environment-friendly, the economic benefit is remarkable, and the comprehensive utilization of the coal associated solid waste is further realized.

The invention provides a dry distillation device and a dry distillation method for converting power coal into coking coal, and relates to the technical field of coal processing. The dry distillation device for converting the power coal into the coking coal comprises a dry distillation furnace main body, a material conveying system and a gas collecting and processing system, a plurality of layers of horizontally-arranged dry distillation trays are arranged in the dry distillation furnace main body, heaters are arranged at the bottoms of the dry distillation trays, the dry distillation trays are connected and supported through supporting rods, and vibration motors are installed on the dry distillation trays; and the distributor is positioned at the upper part of the dry distillation furnace main body and can uniformly distribute materials to the dry distillation trays on each layer. By arranging the multiple layers of dry distillation trays and the vibration motor, materials can be uniformly heated in the dry distillation process, so that the dry distillation efficiency and the coking quality are improved; the heater is rapid in heating and temperature rise; the gas collection and treatment system can effectively collect and treat gas generated in the dry distillation process, reduces environmental pollution, and realizes recycling of resources at the same time.

The utility model discloses a coal cleaning device with a screening function, which relates to the technical field of coal processing and comprises a rack, a net chain conveying belt is arranged at the upper end of the rack, a first mounting plate is fixedly mounted at the lower end of the rack, and a water tank is fixedly mounted at the upper end of the first mounting plate. A circulating pump is fixedly installed on the back face of the machine frame, supporting plates are symmetrically and fixedly installed at the upper end of the machine frame, and cleaning pipes are fixedly installed on the opposite sides of the supporting plates. By the adoption of the structure, after cleaned coal enters the mesh screen frame through the guide plate, due to the fact that the springs are installed between the mesh screen frame and the first connecting column and between the mesh screen frame and the second connecting column, under the vibration effect of the vibration motor at the lower end of the mesh screen frame, the inclined mesh screen frame can be combined with the barrier strips to be conveyed downwards point by point, and the coal conveying efficiency is improved. And crushed materials in the coal are sieved out in the conveying process, so that the coal does not need to be sieved after being transferred, and the processing efficiency of the coal is greatly 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 provides a mining crusher with a cleaning function, and relates to the field of crushing equipment for coal processing, the mining crusher comprises a crushing box, the crushing box comprises a feed hopper and a discharge port, two crushing rollers are rotatably connected in the crushing box, the outer surface of the crushing box is provided with a driving assembly, and the driving assembly is connected with the crushing rollers; telescopic assemblies are symmetrically arranged on the crushing box and connected with scraping assemblies used for scraping and cleaning coal on the surfaces of the crushing rollers. According to the device, the crushing roller can be automatically cleaned, effective cleaning is achieved in the mode that scraping and high-pressure air injection are combined, then the follow-up using effect of the crushing roller is stable, the total cleaning time is shortened, and compared with a manual brush cleaning mode, the labor intensity can be greatly reduced; and compared with a water spraying cleaning mode, the phenomenon that coal materials are adhered in the crushing box after being cleaned is avoided, the dual cleaning effect is good, and the subsequent using effect of the mining crushing equipment is better.

The utility model discloses a coal processing screening device which comprises a screening machine, the bottom of the screening machine is fixedly connected with a supporting frame, the two sides of the interior of the supporting frame are each provided with a movable frame, and the front face and the back face of each movable frame are both connected with the inner wall of the supporting frame in a sliding mode. A plurality of transmission boxes are fixedly connected to the interior of the moving frame, moving blocks are slidably connected to the interiors of the transmission boxes, connecting rods are fixedly connected to the inner sides of the moving blocks, the inner sides of the connecting rods penetrate to the exteriors of the transmission boxes and are fixedly connected with guide wheels, and rebounding devices are fixedly connected to the outer sides of the moving blocks; the outer side of the rebound device is fixedly connected with the inner wall of the transmission box, and sliding blocks are fixedly connected to the front face and the back face of the movable frame. The material receiving frame can be effectively aligned, and the phenomenon that when the material receiving frame is pushed in for material receiving, the material receiving frame is prone to skew and material leakage, a user needs to frequently adjust the material receiving frame, and the practicability of the drum screening machine is reduced is prevented.

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.

This invention discloses a device for thoroughly mixing sludge and raw coal, relating to the field of raw coal processing technology. It includes a U-shaped frame plate, with a left support plate fixedly connected to the upper surface of the U-shaped frame plate near the left side wall. A circular cavity column is fixedly connected to the inner side of the right side wall of the U-shaped frame plate, and an arc-shaped sliding groove is formed on the right side wall of the U-shaped frame plate. The mixing mechanism of this invention, through the collaborative operation of hollow plates, transverse partitions, and perforations, utilizes the high-speed flow of sludge within a continuous S-shaped channel cavity to successfully achieve top-to-bottom sprinkling of raw coal placed between multiple hollow plates, thereby achieving thorough mixing of sludge and raw coal. The hollow plates divide the raw coal into multiple narrow areas, allowing for more thorough sprinkling of the sludge onto the raw coal, avoiding dead zones during the sprinkling process, and greatly improving the mixing efficiency of sludge and raw coal. Furthermore, the mechanism is ingeniously designed, has low manufacturing costs, and is conducive to widespread application.

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 belongs to the technical field of coal mining, particularly relates to an automatic control coal mine processing and transporting device and method, and provides the following scheme for solving the problems that when the load on the cross section of a conveying belt is not uniform, the conveying belt tends to deviate towards the side with the heavy load or the high load, so that equipment abrasion is accelerated, and the transporting efficiency is reduced. Comprising a conveying belt support, and support trundles are fixedly connected to one side of the conveying belt support; the conveying motor is fixedly connected to one side of the conveying belt support, the two sides of the conveying belt support are each connected with two tool blocks through bolts, and one sides of the two opposite tool blocks are connected with the same conveying roller through bearings. The automatic control coal mine processing and transporting device and method have the effects that when the load on one side of the coal conveying belt is too high, the flattening plate automatically adjusts the inclination direction, high-position coal is pushed to the low position, dynamic balance of the load on the cross section is achieved, deviation of the conveying belt is restrained from the source, abrasion is reduced, and the transporting efficiency is improved.

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 invention belongs to the technical field of coal treatment equipment, and particularly relates to a mining vertical grinding device which comprises a grinding mechanism and a powder selecting mechanism, the grinding mechanism comprises a shell, a grinding disc and a grinding roller, the grinding disc and the grinding roller are arranged in an inner cavity of the shell, the powder selecting mechanism comprises a connecting cylinder arranged on the shell and a grader arranged in the inner cavity of the shell, and the inner cavity of the shell is slidably connected with a telescopic cylinder. The telescopic cylinder is fixedly connected with the connecting cylinder, one side of the shell is fixedly connected with a hydraulic cylinder, and the output end of the hydraulic cylinder is fixedly connected with the telescopic cylinder. The technical means that the hydraulic cylinder is matched with the telescopic cylinder is adopted, when the equipment treats high-humidity coal briquettes, the telescopic cylinder ascends to enable the connecting cylinder and the grader arranged in the inner cavity of the connecting cylinder to ascend synchronously, and when hot airflow carries materials to ascend through ascending of the grader, coarse particles are settled and separated at a low position due to gravity and inertia; therefore, the probability that coarse particles impact the grader can be reduced, the grader can better process fine powder, and the overall separation efficiency of equipment can be improved conveniently.

The utility model belongs to the field of coal processing relates to a kind of on-line processing different coal quality's coal mixing machine, including support frame, support frame is installed with coal mixing cavity, the top of coal mixing cavity is provided with feed hopper, and the bottom of coal mixing cavity is provided with discharge port, and stirring mechanism is arranged in coal mixing cavity;Stirring mechanism includes flange, stirring shaft, multiple installation rods and stirring body, and stirring shaft is fixedly connected on the upper surface of flange, and multiple installation rods are fixedly connected on the side wall of stirring shaft, and stirring body is installed on the surface of installation rod, and stirring body is cylindrical structure.The utility model effectively reduces the adhesion of sticky wet material on stirring column, shortens the contact time of material and stirring column, and reduces the sticky problem caused by moisture.

The utility model discloses flotation equipment in the technical field of coal processing equipment, and the flotation equipment comprises a pool body, a motor is fixedly arranged at the top of the pool body, a reciprocating screw rod is driven by the movable end of the motor, the reciprocating screw rod is connected with a ball nut, the ball nut is fixedly connected with a fixing plate, and an air cylinder is fixedly arranged on the fixing plate; a filter screen is driven by the movable end of the air cylinder; the tank body is fixedly provided with a partition plate, and the top of the partition plate is fixedly connected with a plurality of partition plates in sequence from top to bottom. According to the scheme, the height of the filter screen is changed through the air cylinder, foam layers of different water levels are met by detaching the partition plate, and therefore the foam layers of different water levels are cleaned.

The present invention discloses a flotation clean coal blender and a blending method thereof, belonging to the technical field of coal processing. A flotation clean coal blender comprises a frame, and also comprises: a conveying part, the conveying part comprises a flotation clean coal belt conveyor and a jigging clean coal belt conveyor, the flotation clean coal belt conveyor and the jigging clean coal belt conveyor are arranged on the frame in order from top to bottom; a drying box, the drying box is connected to the frame and is placed outside the flotation clean coal belt conveyor; a crushing drum, the crushing drum is fixedly connected to the frame and is placed at the end of the flotation clean coal belt conveyor, and a crushing assembly is arranged in the crushing drum; a receiving hopper, the receiving hopper is fixedly connected to the frame and is placed at the end of the jigging clean coal belt conveyor; the present invention solves the problems of high moisture content of flotation clean coal and uneven mixing of mixed clean coal, prevents flotation clean coal filter cakes from agglomerating again after being crushed separately, ensures the uniformity and stability of mixed clean coal, improves the appearance of clean coal products, and avoids coal quality disputes.

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 environment-friendly coal drying and purifying integrated equipment, and relates to the technical field of coal processing, the environment-friendly coal drying and purifying integrated equipment comprises a shell, the middle part of the right side wall of the shell is provided with a slag discharging groove, the right side of the slag discharging groove is provided with a slag collecting frame fixedly connected with the right side wall of the shell, and the upper part of the interior of the shell is provided with a vibration crushing assembly; a purifying and screening assembly is arranged in the middle of the interior of the shell, and a stirring and drying assembly is arranged on the lower portion of the interior of the shell. According to the coal crushing and drying device, through the arrangement of the vibration crushing assembly, the crushing roller vibrates up and down, coal particles are crushed into smaller particle sizes, the crushing efficiency is improved, the area of the crushed coal particles is increased, and the drying efficiency is improved; and all parts of the coal can make uniform contact with hot air, the drying efficiency is further improved, impurities in the coal are effectively filtered out through the arranged purifying and screening assembly, and the purity of the coal is improved.

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.

The utility model discloses a coal sample preparation drying pretreatment device, which relates to the technical field of coal processing and comprises a treatment box, a roller is rotatably arranged on the inner wall of the treatment box, a drying mechanism is arranged in the roller, and a driving box is fixedly arranged on the side surface of the treatment box. A driving motor for driving the roller to rotate is fixedly mounted on the inner wall of the driving box; the drying mechanism comprises a heat conduction pipe rotationally connected to the inner wall of the roller, and a plurality of hollow rods are fixedly installed on the surface of the heat conduction pipe. The roller is arranged in the treatment box, coal can be driven to roll through the roller, the coal is scattered through the heat conduction pipe and the hollow rods on the surface of the heat conduction pipe, and meanwhile the coal in the roller is heated through the heat conduction spray heads on the surfaces of the hollow rods; the coal can be uniformly and fully dried, and the coal drying pretreatment efficiency is improved.

The utility model relates to the technical field of coal treatment equipment, in particular to a coal desulfurization treatment device which comprises a barrel, an annular shell is assembled on the surface of the inner wall of the barrel, an annular seat is rotatably mounted on the surface of the outer side end of the annular shell, and an inclined frame for transmission is assembled on the surface of the outer wall of the annular seat. A scraping plate abutting against the surface of the inner wall of the barrel is assembled at one end, far away from the ring seat, of the inclined frame; when the treatment equipment for coal desulfurization is used, the ring seat on the ring shell in the cylinder can rotate, and then the ring seat conveniently drives the scraping plate abutting against the inner wall of the cylinder to rotate through the inclined frame, so that the scraping plate can scrape the inner wall of the cylinder, and the condition that coal dust adheres to the inner wall of the cylinder is conveniently reduced; and subsequent smooth discharge is facilitated, so that the coal desulfurization treatment equipment can operate more stably and smoothly.

The utility model discloses a coal slime buffering barrel with a surface modification function in the technical field of coal processing and utilization, which comprises an outer barrel, a sleeve stator frame and an inner barrel are fixedly connected inside the outer barrel from top to bottom in the axial direction, and the top of the outer barrel is fixedly connected with a speed reducing motor through a rack. The output end of the gear motor is coaxially connected with the stirring impeller through a coupler, and the stirring impeller is provided with two stages of scrubbing impellers which are located in the sleeve stator frame and the inner barrel respectively. By intensively scrubbing the impellers in multiple stages in the coal slime buffer barrel, the process of modifying the surface of the coal slime can be completed in the buffer barrel, so that the investment of subsequent coal slime mixing equipment and civil engineering investment are reduced, the coal slime flotation technological process is simplified, and the coal slime flotation efficiency is improved.

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.