346 results about "Coal processing" patented technology

The invention belongs to the technical field of coal processing, and particularly discloses an intelligent coal gangue and coal quality sorting method and system based on an image hyperspectral technology, and the method comprises the steps: obtaining a hyperspectral image on a to-be-detected sample transmission line, converting the hyperspectral image into a grayscale image, and extracting the edge information of a to-be-detected sample; segmenting a spectral image of each to-be-detected sample, and extracting position information of each to-be-detected sample at the same time; determining the dynamic position of each sample to be detected; transmitting sound waves to each to-be-tested sample, and receiving sound wave signals passing through each to-be-tested sample; preprocessing the spectral image and the sound wave signal of each to-be-detected sample, and respectively extracting spectral features, texture features, spatial features and sound wave features to form a comprehensive feature vector; and inputting the comprehensive feature vector into a trained coal gangue recognition model to obtain a coal gangue and coal recognition result. According to the method, the sorting precision of the coal gangue and the coal quality is remarkably improved, so that the model can still keep relatively high recognition precision in a complex environment.

The invention relates to the technical field of energy-saving coal mills, in particular to an automatic control system of an energy-saving coal mill, which comprises a pulverized coal processing module used for processing raw coal into pulverized coal through the energy-saving coal mill; the detection module comprises a pressure sensor and a temperature sensor; the pressure sensor is arranged in the energy-saving coal mill and is used for detecting the working pressure in the energy-saving coal mill; the temperature sensor is arranged in the energy-saving coal mill and is used for detecting the temperature in the energy-saving coal mill; the communication module is used for transmitting the detected sensor data to the control module; and the control module is respectively connected with the pulverized coal processing module, the detection module and the communication module, and is used for determining the pre-tightening force of the electric valve according to the variance of the response duration of the electric valve or determining the working pressure in the energy-saving coal mill according to the average delay duration of the operation of the energy-saving coal mill. The control stability of the energy-saving coal mill is improved.

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 invention discloses a method for inhibiting argillization in a coal washing process, and relates to the technical field of coal processing.The argillization inhibitor comprises filler and auxiliaries, the filler comprises sodium oleate and sodium hexametaphosphate, and the auxiliaries comprise a stabilizer, an antioxidant, a surfactant and an emulsifier; a layer of argillization inhibitor is sprayed on the surface of the coal in advance, so that the surface of the coal is covered with the argillization inhibitor, oil acid radical ions in the argillization inhibitor are adsorbed on the surface of the coal, the content of hydroxyl and hydrocarbon groups on the surface of the coal is increased, the hydrophobicity of the coal particles is improved, and therefore the coal particles are not prone to being dissolved; sodium hexametaphosphate in the argillization inhibitor can enhance the barrier effect among coal particles, so that the coal particles are in a dispersed state, the hydrophilicity of high-ash components in the coal is improved, the high-ash substances in the coal are inhibited from floating out along with clean coal, and the coal slime water treatment is facilitated. The purpose of reducing the ash content of the flotation clean coal is achieved.

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 invention relates to the technical field of coal processing, and discloses a micron particle grading device for a coal mill and a method thereof.The micron particle grading device comprises a grading mechanism, and the grading mechanism is installed above the coal mill; the grading mechanism comprises a grading shell, a grading top shell is mounted at the top of the grading shell, a powder outlet pipe is mounted at the top of the grading top shell, a mounting opening is formed in the top of the grading top shell, an upper cover is mounted in the mounting opening, a variable frequency motor is mounted at the top of the grading top shell, and a rotor is mounted in the upper cover. According to the micron particle grading device for the coal mill and the method of the micron particle grading device, the micron particle grading device is composed of a grading outer shell, a grading top shell, a powder outlet pipe, an upper cover, a variable frequency motor, a rotating blade set, a material returning hopper and the like; the device has the characteristics of uniform separation, high separation efficiency, improved pulverized coal fineness and improved pulverized coal combustion efficiency.

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 discloses a heavy medium magnetic separator for high-strength magnetic coal, which relates to the technical field of coal processing, and comprises a base, a magnetic separation pool arranged inside the base and a bracket installed on the top of the base, and also comprises: a magnetic separation roller; a driving mechanism, which comprises a first gear installed at one end of the magnetic separation roller, a gear ring installed on the inner wall of one side of the bracket and a first power component for driving the gear ring to rotate; an adjusting mechanism, which comprises two driving disks and a second power component for driving the two driving disks to rotate; by repeatedly dividing the magnetic material outside the magnetic separation roller, the granular impurities wrapped in the magnetic material are exposed, and the exposed granular impurities are removed by the suction force of the negative pressure air duct, so as to achieve the effect of automatically cleaning the magnetic material separated by the magnetic separation, thereby solving the problem that the magnetic material separated by the magnetic separation in the prior art contains a large number of tiny granular impurities and needs to be processed again, and effectively improving the efficiency and cleanliness of the magnetic separation of the magnetic material.

The invention relates to the technical field of coal processing, in particular to coal washing and selecting processing equipment and a washing and selecting method.The coal washing and selecting processing equipment comprises a jigging chamber, a sieve plate is fixedly arranged in the jigging chamber, the sieve plate is fixedly installed on the inner wall of the jigging chamber, a jigging component is arranged in the jigging chamber and comprises a water pressing plate, and a water pressing bag is fixedly installed at the top of the water pressing plate. Upward pulse water flow is dispersed through the water distribution effect of the multiple corrugated water insulation pads and the spoilers, the coal material jigging uniformity of the pulse water flow to the top of the sieve plate is better, the spoiler swings left and right through the action of the spoiler frame of the spoiler component, the upward pulse water flow among the spoilers flows upwards in a left-right wavy shape, and the coal material jigging uniformity of the sieve plate is improved. By means of the structure, the left-right vibration effect is generated in the upward jigging process of the coal materials, the coal materials are vibrated to be scattered, layering is better facilitated, meanwhile, the sinking speed of the light coal materials can be well reduced through left-right vibration, and the light coal materials are better layered.

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 coarse slime separation and dehydration combined equipment and a middling coal dissociation and re-separation process, and relates to the technical field of coal processing and mineral separation. A coarse coal slime sorting machine and a scraper vibration centrifugal dehydrator are combined to form innovative integrated equipment, the problems that in the prior art, coarse coal slime sorting precision is low, dehydration efficiency is not high, and the technological process is complex are solved, meanwhile, middling coal treatment is improved, and the utilization rate of the middling coal is improved. The combined process of multi-step crushing, screening, tempering and flotation is adopted, the separation effect of clean coal and gangue is remarkably improved, the recovery rate of clean coal is increased, and the carbon content in tailings is reduced. By means of the improved technological process, efficient recovery of the middling coal and the clean coal is achieved, and the purity of the clean coal and the overall resource utilization efficiency are 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 invention discloses a method and a system for determining coal blending schemes of different coal types of a thermal power plant. The method comprises the following steps: acquiring coal type data of a coal yard and historical operation data of fire coal processing equipment and a fire coal environmental protection system; according to the coal type data of the coal yard and the historical operation data of the fire coal processing equipment and the fire coal environmental protection system, establishing a coal blending scheme including the minimum heat value, the ignition stability, the sulfur content and the water content of the mixed coal entering the furnace; and establishing an objective function by taking the lowest comprehensive power supply cost as an objective, solving objective function values of the plurality of coal blending schemes, and obtaining a final coal blending scheme of the thermal power plant based on the objective function values. According to the method, various constraint conditions of coal blending are determined according to the current operation situation of unit equipment, so that the coal blending combustion scheme better conforms to the actual operation situation of a unit; the coal blending scheme is obtained by performing big data analysis on various data, the method is simple and feasible, the cost is relatively low, the blending proportion of economic coal types is improved, the power generation cost is reduced, the resource utilization efficiency is improved, and the sustainable development of energy is realized.

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 relates to a pebble coal deslagging system which comprises a coal hopper, a first-stage buffer device, a second-stage buffer device, a pulverized coal treatment device and a coal hopper conveying device, and the first-stage buffer device is installed in the coal hopper; the secondary buffer device is mounted at a discharge hole of the coal hopper, and the pulverized coal treatment device is communicated with the secondary buffer device; and the coal hopper conveying device is mounted below the secondary buffer device and is used for conveying the collecting hopper. The coal mill pebble coal slag discharging and conveying device has the beneficial effects of being compact in structure, reasonable in design, capable of achieving quick slag discharging and conveying of pebble coal of a coal mill, high in efficiency and low in manual labor intensity; meanwhile, pulverized coal generated in the deslagging process can be treated, the situation that the pulverized coal drifts in the environment and threatens the personal safety of operators is avoided, and safety and reliability are achieved.

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.