325 results about "Pulverized fuel ash" patented technology

The invention discloses a coal ash characteristic intelligent regulation and control method and system based on big data analysis, and relates to the technical field of coal ash characteristic regulation and control, and the method comprises the steps: obtaining coal ash parameter information, obtaining coal ash fusion characteristic temperature information based on a coal ash fusibility test according to the coal ash parameter information, and obtaining a coal ash viscosity-temperature characteristic curve based on the coal ash parameter information. According to the method, the fusibility of the coal ash is accurately analyzed by testing the fusibility of the coal ash cone, the fusibility of the coal ash in the actual production environment is accurately evaluated through the coal ash fusibility characteristic temperature, the accuracy of coal ash characteristic regulation and control is ensured through the coal ash characteristic regulation and control node, the coal ash characteristic regulation and control efficiency is improved, and the method is suitable for industrial production. The coal ash characteristic regulation and control mode is specifically limited through the coal ash regulation and control reagent proportion information, the situation that the coal ash characteristic regulation and control accuracy is affected by the superposition effect of different regulation and control reagents is avoided, and the coal ash characteristic regulation and control stability is improved.

The invention discloses an anti-skid device for a coal conveying belt of a power plant. The device comprises a conveying belt, a friction roller, a conveying belt shaft, a shaft bracket, a sliding seat and the like, the friction roller and the conveying belt shaft are inserted into two ends of the conveying belt, the shaft bracket sleeves two ends of the conveying belt shaft and is connected with the sliding seat, the conveying belt shaft at one end is connected with a speed reducer and a driving motor, and an adjusting assembly is arranged at the sliding seat to control the tension degree of the conveying belt and comprises a connecting seat, a screw, a nut and an adjusting motor. A linkage sweeping assembly is arranged on the inner wall of the lower portion of the conveying belt and comprises a second support, a rotating shaft, a rotating roller, sweeping belts and the like, the sweeping belts rotate to clean coal ash impurities through the combined driving assembly by means of conveying belt shaft power, and the two sweeping belts rotate in opposite directions to reduce sweeping dead corners. One side of the shaft bracket is provided with a central integrated controller and is connected with a rotating speed sensor which can monitor the rotating speed and control the adjusting motor to adjust the tension degree of the conveying belt according to the rotating speed. The device has the advantages of effective skid resistance, efficient cleaning, accurate tension degree adjustment and integrated control, and the stability and reliability of a coal conveying system of a power plant are improved.

The embodiment of the invention provides a coal conveying belt deviation rectifying device and a coal conveyor of a thermal power plant. The coal conveying belt deviation rectifying device comprises a base, a containing frame, a deviation rectifying roller assembly, an ash removing mechanism and a control box. The conveying carrier rollers are rotatably arranged on the rack in the width direction of the rack; the base and the placing frame are both arranged on the rack; the deviation rectifying roller assembly is rotatably arranged on the base in the height direction of the rack so as to rectify deviation of a belt. The ash removal mechanism is arranged at the top of the containing frame to remove coal ash on the surface of the conveying carrier roller, the control box is arranged in the middle of the top of the containing frame, and the control box corresponds to the ash removal mechanism and the deviation rectifying roller assembly in an electric signal mode. Therefore, the deviation correcting device for the coal conveying belt has the advantage of preventing and correcting the problems of belt abrasion and material leakage caused by deviation of the belt.

The utility model relates to screening equipment for utilizing fly ash-doped solid waste, which comprises a shell and a feed hopper fixedly arranged at the top of the shell in a penetrating manner, a discharge port and a slag discharge port are respectively formed in the lower half parts of two opposite side walls of the shell, and a discharge inclined plate and a slag discharge inclined plate are respectively and fixedly connected to the inner bottom walls of the discharge port and the slag discharge port. The discharging inclined plate and the slag discharging inclined plate partially extend into the shell, a vertical plate is fixedly connected to the inner bottom wall of the shell, and a guide plate is hinged to the top of the vertical plate. The utility model relates to the technical field of coal ash. After screening is completed, the electric push rod works to drive the guide plate to rotate, so that the guide plate is attached to the slag discharging inclined plate, then the two sieve plates rotate, unqualified coal ash falls onto the guide plate through a gap between the two sieve plates and is discharged through the slag discharging inclined plate and the slag discharging opening, and therefore the unqualified coal ash can be conveniently taken out; and the fly ash can be fully screened.

The invention relates to the technical field of dust removers, and discloses an anti-blocking heat-tracing-free device for a dust hopper of a dust remover, the anti-blocking heat-tracing-free device comprises a dust hopper mechanism and a feeding mechanism arranged on one side of the dust hopper mechanism, the dust hopper mechanism comprises an outer cylinder body and an inner cylinder body arranged on the inner wall of the outer cylinder body, the upper end of the outer cylinder and the upper end of the inner cylinder are jointly provided with an upper cylinder; the feeding mechanism comprises a feeding pipe communicated with the inner barrel and an anti-blocking device arranged on the feeding pipe, coal ash is fed into the inner barrel from the feeding pipe, impact force generated by the coal ash is applied to a first connecting fin and a second connecting fin and drives the first connecting fin and the second connecting fin to rotate, and the first connecting fin and the second connecting fin are connected with the anti-blocking device. Not only can the temperature in the device be uniformly stirred, but also the coal ash can be scattered, and the fluidization possibility is increased.

The invention discloses a coal slime flotation dosage dynamic prediction method and system based on multiple working conditions, and relates to the technical field of mineral processing process control, and the method comprises the steps: based on coal slime particle data, employing a density clustering algorithm to carry out preliminary dynamic division on real-time working conditions, generating initial working condition labels, and through a time sequence correlation analysis and dynamic correction mechanism, carrying out dynamic prediction on the real-time working conditions; optimizing the initial working condition label to generate a multi-working condition label; a flotation cell simulation model is constructed, advanced simulation is conducted according to the real-time working condition operation parameters, the clean coal ash value and the recovery rate in a future time window are predicted, dynamic calibration is conducted, and a chemical adding amount adjusting instruction is generated; and executing the dosage adjusting instruction, evaluating the coal slime flotation efficiency through a multi-dimensional flotation dynamic evaluation method, and dynamically optimizing the dosage adjusting instruction according to an evaluation result. A flotation cell mechanism model is established, a predicted value is dynamically calibrated through parameter inversion and extended Kalman filtering, a dosing instruction is generated in combination with MPC, and advanced precise regulation and control of clean coal quality and recovery efficiency are achieved.

The invention discloses a coal slime flotation dosing state evaluation method and system based on multi-modal data, and belongs to the technical field of mineral processing, and the method comprises the steps: collecting a flotation froth image and tailing ash content data in a coal slime flotation process, taking the collected data as multi-modal input data, labeling the data, and preprocessing the data; randomly dividing the multi-modal data set with the label into a training set and a test set according to a proportion of 6: 4, establishing a flotation dosing state evaluation model based on a deep learning network, training the model, and inputting the data into the model to obtain a dosing state of to-be-classified data; according to the coal slime flotation dosing state evaluation method and system based on the multi-modal data, comprehensive analysis is conducted by fusing the multi-modal data, accurate evaluation and optimization of the dosing state are achieved, accurate reference bases are provided for the coal slime flotation production process, and the production efficiency and the resource utilization rate are improved.

The utility model discloses an automatic bulk system for ash materials, which comprises a tank opening identifying and positioning piece, a controller and a bulk machine, the bulk machine is provided with a bulk head, the tank opening identifying and positioning piece and the bulk head are both electrically connected with the controller, a tank car parking station for parking and feeding of a tank car is arranged below the bulk head, and the tank car parking station is electrically connected with the controller. The tank opening identifying and positioning part is used for identifying a tank opening of the tank car and positioning along with the tank opening, and the controller is used for controlling the bulk head to move to be aligned with the tank opening according to positioning data of the tank opening identifying and positioning part, so that when the tank car is parked at the tank car parking station, the bulk head can move to the tank opening to be aligned with the tank opening. The tank opening of the tank car can be identified by the tank opening identifying and positioning piece, the tank opening is positioned, then three-dimensional coordinate information of the tank opening is transmitted to the controller, the bulk head is controlled by the controller to move to be aligned with the tank opening, and coal ash can be added into the tank car through the bulk head.

The invention belongs to the technical field of coal, and particularly discloses an alkaline agent for chemical deep deliming of ultra-pure coal and a preparation method and application of the alkaline agent, and the alkaline agent is prepared from a quaternary ammonium alkali solution, a strong alkali solution, an NH3.H2O solution and a sodium fluoride solution according to the volume ratio of (2-3): (1-2): (1-2): (2-3). Compared with the prior art, the compound agent has high alkalinity and complexing capacity, and after deep deliming is conducted through the compound agent, clean coal with the ash content being 2% + / -0.2% can be prepared into ultra-pure coal with the ash content being lower than 0.2%; the preparation method of the alkaline compound agent is simple and easy to operate, the obtained product is high in quality, the coal ash content of the prepared ultra-pure coal is smaller than 0.2%, deep deashing of the coal is achieved, and further comprehensive utilization of the coal is facilitated.

The invention provides a circulating fluidized bed boiler load self-adaptive control system and method, and belongs to the technical field of circulating fluidized bed boiler load self-adaptive control. In order to realize in-boiler temperature regulation based on dynamic conveying of settled ash in a boiler and realize efficient active matching of heat transfer capability in a quick response load process of the boiler, the technical scheme is that the top of a hearth of the circulating fluidized bed boiler is communicated with the top of a cyclone separator through a coal ash recovery pipeline, and the top of the cyclone separator is connected into a tail flue; an economizer is arranged in the middle of the tail flue, and a flue outlet is formed in the bottom of the tail flue; the bottom of the cyclone separator is connected with a circulating ash returning device through an outlet pipeline, a settled ash conveying hole is formed in the upper part or the side part of the circulating ash returning device, and a conveying pipeline is welded on the outer side of the settled ash conveying hole and is connected with the bottom of a hearth of the circulating fluidized bed boiler; the method is used for self-adaptive control of the load of the circulating fluidized bed boiler.

The invention relates to the technical field of coal engineering, in particular to a pulverized coal ash content detection method and system based on image recognition, and the method comprises the following steps: collecting a coal sample and preprocessing the coal sample; coal sample target images corresponding to different modes are obtained for the preprocessed coal sample; a trained detection model is obtained, the detection model is used for outputting a gray content predicted value and a gray content category based on an input image, the detection model comprises a feature adjustment module, a feature extraction module, a feature fusion module and an analysis output module which are connected in sequence, and the feature extraction module comprises a plurality of convolutional layer modules and a Transform self-attention layer module; each module in the feature extraction module is connected with the feature fusion module, and the analysis output module is used for outputting an ash content predicted value and an ash content category; and inputting the coal sample target images corresponding to different modes into the trained detection model to obtain ash content predicted values and ash content categories of the collected coal samples. By utilizing the method disclosed by the invention, the ash content of the slack coal product can be detected more quickly and accurately.

The invention relates to the technical field of pulverized coal screening, and discloses a thermal power plant pulverized coal screening device which comprises a shell, the top of the shell is fixedly connected with a feeding pipe communicating with the interior of the shell, a grinding assembly for conducting auxiliary grinding on pulverized coal is arranged in the feeding pipe, and the inner walls of the two sides of the shell are each fixedly connected with two fixing blocks; sliding holes are formed in the tops of the multiple fixing blocks, supporting rods are slidably connected into the sliding holes, and a first filter plate inclining downwards is fixedly connected to the top ends of the supporting rods. According to the coal ash screening device, coal ash with the diameter smaller than 20 micrometers can be absorbed, so that secondary screening of the coal ash is not needed, the screening efficiency of the coal ash is improved, the coal ash can be pulverized in an auxiliary mode, the size of the coal ash is reduced, and the using effect of the screening device is improved; and coal ash can be prevented from being accumulated in filter holes of the second filter plate to block the filter holes to affect air outlet of the fan, and normal use of the ash suction mechanism is guaranteed.

It has been unexpectedly discovered that the addition of a natural or other pozzolan to non-spec coal ash significantly improves the properties of the non-spec coal ash to the extent it can be certified under ASTM C618 and AASHTO 295, as either a Class F or Class C coal ash. The natural pozzolan may be a volcanic ejecta, such as pumice or perlite. Other pozzolans may also be used for this beneficiation process. Many pozzolans are experimentally tested and may be used to beneficiate non-spec coal ash into certifiable Class F coal ash. Additionally, this disclosure provides a method of converting a Class C coal ash to a more valuable Class F coal ash. This discovery will extend diminishing Class F coal ash supplies and turn non-spec coal ash waste streams into valuable, certified coal ash pozzolan which will protect and enhance concrete, mortars and grouts.

The utility model relates to the technical field of coal feeders, in particular to a coal feeder cleaning device which comprises mounting frames, rotating rollers are arranged between the mounting frames, a conveying belt is arranged on the rotating rollers, firstly, the conveying belt is driven by a driving motor to rotate, then coal briquettes are driven to be conveyed, and in the conveying process, the coal briquettes are conveyed through the conveying belt. The scraping plate is located at the bottom of the conveying belt, residual coal slag on the surface of the conveying belt can be scraped down through the scraping plate and falls into the collecting box, meanwhile, the driving motor can drive the driven wheel through transmission of the driving wheel and the belt, the driven wheel drives the brush rod to rotate, and coal ash on the surface of the conveying belt is swept down through the brush rod. According to the coal feeder, the conveying belt is arranged in the collecting box and falls into the collecting box, follow-up treatment is facilitated, manual sweeping is not needed, the tightness of the conveying belt can be adjusted through up-down adjustment of the adjusting roller, only the double-shaft motor needs to be started during adjustment, the adjusting process is simpler and faster, and the use efficiency of the coal feeder cannot be affected.

The invention discloses a powder selecting device for a power plant, and relates to the field of powder selecting devices, the powder selecting device comprises a main separating cylinder and a plurality of auxiliary separating cylinders, a communicating sleeve is mounted on the main separating cylinder, the plurality of auxiliary separating cylinders are all connected to the communicating sleeve, and air pipes are connected to the two auxiliary separating cylinders located on the same side. It needs to be explained that in the embodiment of the invention, when the coal ash is selected, the coal ash is effectively scattered through throwing and heating, and the coal ash is prevented from being affected with damp, agglomerated and adhered to the interior of the main separation barrel; through intermittent discharging, the coal ash can be dredged, and the problem that the bottom coal ash is too large in pressure intensity and blocks cannot be discharged is solved; besides, if the humidity of the coal ash is high and the heating wire cannot dry the coal ash in time, the adapter barrel can be closed in time, the problem that much humid coal ash enters the main separation barrel to cause blockage in the main separation barrel is avoided, meanwhile, workers can conveniently handle the coal ash in time, and therefore loss can be effectively avoided for a power plant.

The present invention relates to the technical field of coal ash component determination, and in particular to a method and system for coal ash component determination. The method comprises: performing X-ray diffraction on a coal ash sample to obtain an XRD pattern, detecting the XRD pattern to obtain multiple peak-finding windows; calculating the significance of significant peaks within the peak-finding windows, and using the peak-finding windows with significance levels within the significant interval as characteristic regions; heating the coal ash sample to a first temperature interval to obtain XRD patterns at different temperatures, and determining whether significant peaks within the characteristic region at the same position are overlapping peaks based on the obtained multiple XRD patterns; heating the coal ash sample from the first temperature interval to a second temperature interval to obtain XRD patterns at different temperatures, updating the positions of the peak-finding windows, and further determining the positions of overlapping peaks for coal ash component detection. The present invention takes into account the influence of overlapping peaks when analyzing coal ash components, thereby improving the accuracy of coal ash component analysis results.

The utility model discloses a pneumatic coal dressing auxiliary dust removal device which comprises pneumatic coal dressing equipment, and auxiliary dust removal devices are installed at the left end and the right end of the rear side of the pneumatic coal dressing equipment. According to the coal dust removal device, dust can be effectively removed from coal ash in the wind power coal dressing process by installing the auxiliary dust removal device, the good operation environment and the health of operators are ensured, water in the water storage ring can be atomized and sprayed out by arranging the atomization nozzle, then dust removal treatment can be carried out on the passing coal ash, and the dust removal efficiency is improved. Dust particles in coal ash can be rapidly adsorbed, water drops carrying the dust particles gradually settle to an annular plate and enter a recycling ring through a first through hole and a second through hole, a filter screen and a filter membrane arranged in the recycling ring can filter sewage, the sewage returns to a water storage ring through a water conveying pipe and a water pump to be recycled, and water resources are saved; and the bottom plate, the filter screen and the filter membrane are mounted through bolts and are convenient to disassemble and replace.

The present application relates to a kind of bauxite clinker kiln method and system for disposing aluminum ash, belong to metallurgical environmental protection technical field, the method includes the following steps: pretreatment aluminum ash, obtain fine powder aluminum ash;Fine powder aluminum ash is added to bauxite slurry, so that fine powder aluminum ash and the dry raw material and calcined coal ash in bauxite slurry are mixed, and mixed sintering is carried out, and then cooling is carried out, to obtain clinker;The present application carries out resource utilization to aluminum ash, replaces part of aluminum ore, and is used in the production of aluminum-based new material product, while reducing the production cost of aluminum-based new material product, realizes the harmless treatment of aluminum ash.

The utility model discloses a coal powder cleaning device for coal belt cleaning relates to cleaning device technical field. A coal powder cleaning device for coal belt cleaning, including belt conveying table and fixed base, belt conveying table fixed connection is at the top of fixed base, the ash cleaning structure is located on the fixed base, and the ash cleaning structure is including cleaning box, two support plates, two electric telescopic link, cleaning roller brush, driving motor and cleaning scraper, and the mechanical friction of cleaning roller brush removes the ash that sticks to the belt surface, and the cleaning scraper is scraped to remove the ash that remains the roller brush, effectively avoids secondary pollution, compared with single ash scraping plate cleaning, can handle big granular ash and adhered dust simultaneously, simultaneously, the negative pressure dust collection channel that exhaust fan, dust collection square pipe and dust collection mouth constitute can capture suspended fine dust in time, solve the problem that only rely on ash scraping plate cleaning leads to small granular dust to drift in traditional, realize the all -round cleaning to the ash on the belt surface.

The invention discloses a circulating blast furnace top gas high-temperature reforming system and method, and relates to the technical field of circulating blast furnaces. The circulating blast furnace top gas high-temperature reforming system comprises a circulating blast furnace, a gasification furnace device, a reformed gas treatment module and a waste heat recovery module, the gasification furnace device is connected with the circulating blast furnace, and the reformed gas treatment module is connected with the gasification furnace device and the circulating blast furnace. The reformer device is configured to receive the reformed gas discharged by the gasifier device, treat the reformed gas and then input the treated reformed gas into the circulating blast furnace; and the waste heat recovery module is configured to receive coal ash discharged by the gasification furnace device and preheat lump coal entering the gasification furnace device by utilizing waste heat of the coal ash. Based on the technical scheme disclosed by the invention, the heat utilization rate in the coal gasification process is remarkably improved, the energy consumption in the coal gas reforming process is reduced, and resource utilization and low-carbon clean development of metallurgical coal gas can be realized.

The utility model discloses a dust suppression device for a coal conveyor, which effectively realizes a better dust suppression effect and comprises a conveyor belt driven by the coal conveyor and used for conveying coal, a collecting box for collecting pulverized coal is arranged on the lower side of the conveyor belt, two rollers are abutted against the lower side of the conveyor belt, and the rollers are arranged on the lower side of the conveyor belt. The lower side of each roller is provided with a scraping plate used for scraping coal powder on the outer side of the roller, a movable adjusting plate is arranged in the collecting box, the bottom of each scraping plate is rotationally connected with the adjusting plate, and a spraying mechanism used for dust suppression is arranged in the collecting box. The device is simple and convenient to operate, the purpose of conveniently cleaning the conveying belt is effectively achieved, a worker can conveniently install the device and conveniently operate the device, the function of adjusting the pressing force is added, and collected coal ash can be conveniently removed.

A method for accurately and efficiently desodium of high-sodium coal, comprising the following steps: detecting the moisture M of the high-sodium raw coal to be treated t , calculating the total sodium content M of the wet basis coal sample Na , converting the total sodium content M of the dry basis coal sample Na , determining the Na2O content in the ash of the high-sodium raw coal to be treated; selecting the key factors affecting the desodium rate; establishing the relationship model between the key factors and the actual desodium rate; according to the Na2O content in the ash and the requirements of the standard, the desodium rate of the high-sodium raw coal to be treated is converted, and the Re target value is obtained; the Re target value is brought into the relationship model, and the selection and value of the key factors of the high-sodium raw coal to be treated during desodium treatment are obtained respectively, and finally the actual leaching desodium of the high-sodium raw coal to be treated is carried out to obtain low-sodium coal meeting the requirements. The method can accurately desodium, reduce cost, energy consumption and corrosion and pollution generated in the production process, and has important significance for guiding large-scale application of high-sodium coal desodium.

The embodiment of the invention provides a thermotechnical automatic production feeding device. The thermotechnical automatic production feeding device comprises an elevator and a feeding hopper fixedly connected to the surface of a conveying belt of the elevator. The covering part comprises a plurality of covering plates which are connected to the two sides of the elevator in a sliding mode and can synchronously move along with the feeding hopper, and the covering plates are used for covering the top of the feeding hopper in the lifting process of the feeding hopper. According to the feeding hopper, the covering component is arranged, and the covering plate of the covering component is located on the upper side of the feeding hopper in the lifting process of the feeding hopper and synchronously moves along with the feeding hopper, so that the effect of covering a coal mine in the feeding hopper is achieved, meanwhile, falling of coal briquettes and outward scattering of coal ash are prevented, and the working environment is optimized.

The utility model discloses a device for cleaning coal ash cakes on the inner wall of a boiler, and relates to the technical field of boiler cleaning. The device comprises a base, a collecting mechanism is arranged at the top of the base, a cleaning mechanism is arranged at the top of the collecting mechanism, the cleaning mechanism comprises a boiler tank body, a top plate is connected to the top of the boiler tank body in a height mode, a threaded block is fixedly connected to the top of the top plate, and a top plate is fixedly connected to the top of the top plate. A first motor is started to drive a threaded rod to rotate, at the moment, the threaded rod ascends or descends through a threaded block, a first fixing plate and a second sliding block are pushed to slide in a sliding rail, meanwhile, the first motor is driven to slide, and when the threaded rod moves, a rotating block located at the bottom of the threaded rod is driven to move, and meanwhile an auxiliary rod located on the outer surface of the threaded rod moves at the same time; when the auxiliary rod moves, the first sliding block can be driven to slide in the sliding groove, and meanwhile the ash removing scraper located on the outer wall of the auxiliary rod can slide on the inner wall of the boiler tank body so that coal ash can be agglomerated.

The present application belongs to the field of coal mine drilling, and particularly relates to a reamer for directional long drilling of coal seams; the reamer comprises a reamer barrel, a strip-shaped groove is uniformly formed on the inner wall of the reamer barrel along the circumferential direction, a cutter seat is slidably arranged in the strip-shaped groove, and a cutter wing is mounted on the cutter seat; a top plate penetrating through the cutter seat is further hingedly arranged on the cutter seat, a driving part for driving all the cutter seats to synchronously slide up and down in the strip-shaped groove is further arranged in the reamer barrel, and the cutter wing is used for adjusting the position of the cutter wing protruding from the outer wall of the reamer barrel and further adjusting the cutting diameter during the up-and-down sliding of the cutter seat in the strip-shaped groove; the driving part further cooperates with the top plate to drive the top plate to swing and remove the coal ash in the gap of the cutter wing; the present application reduces the abrasion from layered cutting, cooperates with self-cleaning and heat dissipation to maintain the cutting efficiency, dynamically adjusts the hole diameter and real-time performs the hole wall trimming during the reaming process, and forms a functional closed loop from the local to the whole to jointly solve the problems of tool life, chip removal and hole forming accuracy in the reaming of hard coal seams.

This invention discloses an artificial aggregate prepared using desulfurization solid waste, its preparation method, and its application, belonging to the field of solid waste resource utilization technology. The preparation method includes the following steps: ball milling desulfurization slag to obtain desulfurization slag powder; low-temperature pyrolysis treatment of waste incineration fly ash to obtain pretreated waste incineration fly ash; mixing desulfurization ash, desulfurization slag powder, and pretreated waste incineration fly ash to obtain a raw material mixture; adding water to the raw material mixture and pelletizing to obtain aggregate particles; subjecting the aggregate particles to air curing and mineralization curing sequentially to obtain the final product. This invention also discloses the artificial aggregate prepared by the above method and its application. The artificial aggregate prepared using desulfurization solid waste of this invention has high compressive strength and stable ion storage, which can solve the problems of low strength and high dependence on admixtures in existing coal ash-based aggregates, and has broad application prospects.

The present invention provides a coal ash detection device based on gamma rays, which includes a coal seam thickness regulation device, a controller, a laser rangefinder connected to the controller, a gamma ray source, a detector, an amplifier, a multi-channel analyzer, and an electric control machine system, belonging to the field of coal industry index detection. When the clean coal is transported to the belt conveyor, the coal seam thickness regulation device is responsible for adjusting the thickness of the coal seam to reduce the influence of high-density substances such as steel wires in the belt of the belt conveyor on the measurement results. The laser rangefinder sends the adjusted coal seam thickness signal to the controller, and the other end of the controller is connected to the starting device of the belt conveyor. When the coal seam thickness is low, the rotation speed of the belt conveyor is reduced. The detector includes a gamma ray source, a detector, a multi-channel analyzer, and an electric control machine system to achieve continuous measurement of ash content. The temperature sensor in the radiation source box is used to regulate the temperature of the radiation source box, reduce the influence of temperature on the measurement results, and improve the accuracy of the measurement results.

The utility model discloses a convenient exhaust valve coal ash cleaning device which comprises an exhaust pipeline, an exhaust valve and a cleaning branch pipe, the exhaust pipeline is provided with the exhaust valve, one side of the exhaust valve is communicated with the cleaning branch pipe, and the end of the cleaning branch pipe is provided with a first flange. A first sealing groove is formed in the end of the cleaning branch pipe, a first sealing ring is arranged in the first sealing groove, a second sealing groove is formed in the end face of the first flange, a second sealing ring is arranged in the second sealing groove, the first flange is fixedly connected with a blind plate flange, the blind plate flange and the first flange are fixedly installed, and sealing installation of the blind plate flange and the cleaning branch pipe is achieved. When ash needs to be cleaned, the blind flange is opened, and air or water is used for cleaning, so that the cost is reduced, the efficiency is improved, and the desired effect is achieved through an easy-to-operate method.

The invention provides anti-burst and anti-impact sacrificial concrete and a preparation method thereof. The sacrificial concrete is prepared from the following components in parts by weight: 600 to 700 parts of cement, 250 to 350 parts of superfine fly ash, 100 to 150 parts of silica fume, 900 to 1100 parts of quartz sand, 70 to 120 parts of barium ferrite, 140 to 170 parts of steel fiber, 4 to 20 parts of sisal fiber, 193 to 213 parts of water and 15 to 20 parts of water reducing agent. The preparation method comprises the following steps: sequentially mixing and stirring the raw materials, pouring, forming and curing. The sacrificial concrete disclosed by the invention has good sacrificial property, and the water content of raw materials is lower than 5%, so that the hydrogen yield in the interaction process of a reactor core melt and a sacrificial material is reduced; and the sisal hemp is heated to form gaps and channels, so that the high-temperature bursting resistance is improved.

The carriage for coal transportation comprises a carriage body, a water tank is arranged on the surface of one side of the carriage body, a water pump is installed at the top of the water tank, the input end of the water pump is connected into the water tank through a water pipe, the output end of the water pump is connected with a main water spraying pipe through a hose, and a nozzle base is arranged at the bottom of the main water spraying pipe in a penetrating mode. According to the coal surface spraying device, the water pump is adopted, water in the water tank is conveyed into the water spraying main pipe through the water pump, the nozzle base is arranged at the bottom of the water spraying main pipe in a penetrating mode, and the atomization nozzles are arranged at the bottom of the nozzle base, so that water can be sprayed to the surface of coal in the compartment body; a second synchronous motor drives a second threaded rod to reciprocate, a water spraying header pipe can be driven to reciprocate through a threaded connecting block, in the process, water can be sprayed to the surface of coal, fire caused by friction between the coal and the compartment body is prevented, safety is high, coal ash can be settled and prevented from rising, and environment pollution is avoided.