280 results about "Clean coal" patented technology

The invention relates to a clean coal calorific value prediction method, device and equipment, a medium and a product, and is applied to the technical field of computers. The method comprises the following steps: acquiring a dense medium density influence parameter of a target coal material; in the dense medium separation process of the target coal material, the dense medium density influence parameters are predicted and analyzed based on a preset clean coal heat value prediction model, and a clean coal heat value prediction result of the target coal material is obtained; the clean coal calorific value prediction model at least comprises a first sub-model, and the first sub-model is used for predicting a first prediction result corresponding to the target coal material based on the time sequence characteristics of the dense medium density influence parameters. Through dynamic change of dense medium density influence parameters, a set value of the dense medium density is adjusted in time, so that a clean coal calorific value prediction result can be reflected accurately in real time. The hysteresis problem caused by determining a calorific value result by chemical examination after dense medium separation is avoided, and the prediction in the separation process can dynamically adapt to complex working conditions. Therefore, the accuracy of clean coal calorific value prediction is improved.

The invention discloses a raw coal quality data optimization and reconstruction method based on clean coal ash content feedback, and belongs to the technical field of computers. Data completion is achieved through the generative adversarial network; a generator predicts missing raw coal data according to the high-sampling-frequency clean coal ash content, and a discriminator evaluates the authenticity of the data. According to the method, the characteristic that the clean coal ash sampling rate is higher in the dense medium separation process is used for guiding data reconstruction; meanwhile, a composite loss function including adversarial loss, reconstruction loss and regression loss is designed, and the generation quality is improved. The method effectively solves the problem of raw coal quality data missing in the coal dressing process, and has high engineering application value.

The invention discloses a cyclone separation and moving particle bed coupled pulverized coal pyrolysis oil gas high-temperature dust removal system, and belongs to the technical field of coal clean utilization. The system comprises a cyclone separator, a fine filtration unit, a filter material cyclic regeneration unit and an intelligent control unit, the fine filtration unit comprises a particle bed, a particle bin is arranged at the top end of the particle bed, and a composite filter material layer is arranged on the particle bed; a dust-containing high-temperature oil gas pipeline and a pretreatment high-temperature oil gas pipeline are arranged at the top end of the cyclone separator, dust-containing high-temperature oil gas is introduced into the cyclone separator through the dust-containing high-temperature oil gas pipeline to be pretreated, and the pretreated dust-containing high-temperature oil gas is introduced into the particle bed through the pretreatment high-temperature oil gas pipeline to be finely filtered; and a coke breeze discharge pipe is arranged at the bottom of the cyclone separator. The invention is used for solving the technical problem of low gas-solid separation efficiency at high temperature caused by the adoption of a single filter material in the existing pulverized coal dust removal system.

The invention relates to the technical field of coal ash reduction and chlorine removal, and provides a dense-medium shallow-slot separation ash reduction and leaching chlorine reduction joint production device and a production process, a separation piece is provided with an overflow port, and the overflow port is used for conveying clean coal; a frame; the conveying part is arranged on the rack, is positioned below the overflow port and is used for conveying clean coal; the first storage bucket is rotationally arranged on the rack, and the first storage bucket is provided with a plurality of first water leakage holes; the second storage barrel is arranged on the rack and located in the first storage barrel, the conveying part leads to the second storage barrel, the second storage barrel is provided with a second water leakage hole, after the first storage barrel rotates, the first water leakage hole is communicated with or canceled from the second water leakage hole, and after the first water leakage hole is canceled from the second water leakage hole, the second storage barrel is used for storing water and clean coal; the first water leakage hole and the second water leakage hole are communicated and then used for discharging water. By means of the technical scheme, the problem that in the prior art, the heavy medium shallow groove separation ash reduction and chlorine removal effect is poor is solved.

The invention discloses coal mine screening equipment for coal mining and a use method, and the equipment comprises a multi-source sensing module which is used for obtaining the original data of various physical characteristics of raw coal in real time; the data fusion and feature extraction module is used for extracting a fusion feature vector used for representing the key difference between the coal and the gangue; the decision-making unit is used for generating a sorting control instruction aiming at the current batch of raw coal in real time; the execution module is used for carrying out coal and gangue separation on the coal flow; the feedback module is used for feeding back clean coal product quality indexes and tailing data detected in real time to the decision-making unit; multi-dimensional information such as mineral components, moisture and lumpiness is fused through the multi-source sensing module, comprehensive analysis is carried out through the data fusion and intelligent recognition model, the limitation of a single sensing mode can be overcome, the recognition precision and reliability of coal and gangue are improved, efficient sorting is achieved from the source, and the recognition efficiency of coal and gangue is improved. The effects of improving the purity of a clean coal product and reducing the coal carrying rate of the gangue are directly achieved.

The invention relates to the technical field of coal sorting, and discloses a coal vibration airflow collaborative sorting method and system based on multi-target collaborative control, and the system comprises a data acquisition unit, a data processing unit and an execution adjustment unit; wherein the data acquisition unit is used for synchronously acquiring multi-dimensional operation data; the data processing unit performs fusion operation on the multi-dimensional operation data to obtain estimated values of bed stratification degree and real-time cutting density, and performs rolling prediction based on a prediction model to obtain an optimization control instruction; the execution adjustment unit receives the optimization control instruction to adjust the apparent wind speed distribution of each subarea to stabilize bed layering, dynamically adjusts the vibration frequency and amplitude to maintain particle migration balance, corrects the longitudinal and transverse inclination angles to suppress backmixing, and adjusts the discharge boundary. The problems of separation boundary drifting and backmixing are effectively avoided, and the stability of clean coal ash content and cutting density is ensured.

The invention relates to a method for preparing ultra-pure coal through combination of grinding and flotation. The method comprises the following steps: carrying out primary surface modification and flotation to remove most of gangue; fine silt on the surfaces of the coal particles is removed through scrubbing and ore grinding, and the hydrophobicity of the coal is improved by combining secondary surface modification and flotation; the coal quality is judged according to the ash content of secondary flotation clean coal, if the ash content is larger than 3%, dissociation ore grinding and grading are conducted, and it is guaranteed that coal and gangue are fully dissociated; double-emulsion surface modification is adopted to enhance the dispersibility of the agent, and finally, the ultra-pure coal with the ash content smaller than 1% is obtained through three-time flotation and four-time flotation. Through the synergistic effect of scrubbing ore grinding, dissociation ore grinding and multi-section flotation, the dissociation efficiency and flotation selectivity of coal and gangue are effectively improved, the method adapts to coal quality fluctuation, and the yield of ultra-pure coal is increased.

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

The invention provides a data stream active sampling and predicting method for a product ash content index in a coal dense medium separation process. The method comprises the following steps: S1, preprocessing coal dense medium separation data; s2, establishing a dynamic cache window in the sorted data stream to perform synchronous clustering; s3, establishing a feature memory dictionary, and constructing a centralized kernel space by using data in the feature memory dictionary to obtain a dictionary data feature micro-mode direction and a feature main mode direction; s4, calculating the projection of the real-time data point in the feature micro-mode direction, and judging whether active sampling is carried out or not; s5, obtaining the projection of the dictionary data in the main mode direction by using the kernel principal component information in the S4, constructing an evaluation function, and judging whether to sort active sampling or not; s6, taking the maximum sample set of the value function as a new feature memory dictionary; and S7, strengthening the weight of the actively sampled sample, recursively constructing a random weight neural network through a Woodbury formula, and predicting the clean coal ash content in the label data stream until the data stream is finished.

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 relates to the field of intelligent control of coal preparation plants, and discloses an intelligent dry separation dynamic optimization method and system for a coal preparation plant. According to the method, raw coal property data and environmental parameters are obtained, and a standardized data matrix is generated through multi-source data fusion processing; generating a parameter suggestion set based on the deep learning network and performing feasibility verification; searching the parameter space by adopting an intelligent optimization algorithm to generate an optimized parameter combination; and finally, dynamic adjustment of process parameters is realized through instruction conversion and packaging. Intelligent decision making and dynamic optimization of the coal dressing process are achieved, the method has the advantages of being high in data processing precision, parameter optimization efficiency and system response speed and the like, the clean coal recovery rate can be remarkably increased, energy consumption is reduced, and safe and stable operation of production is ensured.

The invention belongs to the field of clean coal separation, relates to a data analysis technology, and aims to solve the problem that raw coal in dense medium coal separation cannot be automatically matched with suspension density in the prior art, in particular to a suspension density intelligent matching and decision control system based on raw coal ash content. The decision control platform is in communication connection with a density test module, a density matching module, a weight analysis module and a storage module; before clean coal separation, the ash content of raw coal is obtained and marked as an original value, the initial density of suspension liquid of the raw coal subjected to dense medium coal separation is marked as a density value, the clean coal ash content and the coal separation duration in the dense medium coal separation process are marked as a fine separation value and a coal separation value correspondingly, and a test period is generated; and marking all dense medium coal preparation processes in the test period as test processes. According to the method, the suspension liquid density can be tested and analyzed in the clean coal separation process, and the corresponding initial suspension liquid density can be directly matched according to the category and ash content of raw coal.

The invention discloses an intelligent coal gangue sorting control method based on image analysis, and particularly relates to the technical field of coal gangue sorting control, and the method comprises the steps: obtaining appearance image data and internal structure data of coal gangue, preprocessing the obtained data, and extracting appearance image features and internal structure features of the coal gangue; inputting the extracted coal gangue appearance image features and internal structure features into the trained coal gangue type recognition model for coal gangue type recognition; automatically triggering a corresponding sorting instruction based on an identification result; according to the method, the sorting efficiency, the sorting precision, the clean coal yield and the gangue discharge rate in the coal gangue sorting operation are calculated, a dynamic quality evaluation system is established, and optimization is triggered when it is detected that the sorting control quality coefficient corresponding to the related index deviates from expectation, so that the sorting accuracy is effectively improved; the reliability and stability of the coal gangue sorting operation process are effectively improved, and the resource utilization rate can be remarkably increased.

The invention discloses an automatic cleaning coal conveying belt conveyor, which relates to the technical field of coal conveying equipment and comprises a belt conveyor body, an automatic cleaning structure and a water recycling structure. The belt conveyor body provides a coal conveying foundation support; the automatic cleaning structure carries a water scraping structure, a washing structure and an ash sweeping structure through a guide rod, slides along the guide rod to be matched with a belt to operate, progressive cleaning from floating ash removal, stubborn stain washing to water scraping is achieved, all the cleaning structures are matched with water receiving or material guiding components, and it is guaranteed that clean waste is collected in order; the water recycling structure achieves recycling, filtering and circulating supply of cleaning water through the water tank, the filter screen and the submersible pump, and water resources are saved. The cleaning effect is improved through multi-stage collaborative cleaning, belt abrasion is reduced by means of an elastic adaptive structure, the environmental protection property and economical efficiency are enhanced in combination with the water circulation design, and the device is suitable for efficient and automatic cleaning of various coal conveying belts.

The invention discloses a coal gasification fine slag and coal slime collaborative flotation treatment method based on assistance of oily sludge, and relates to the technical field of industrial solid waste resource utilization. The method comprises the following steps: 1) pretreating the oily sludge; (2) mixing the fine coal gasification slag and the oily sludge, pulping and grinding; 3) preparing ore pulp; and 4) flotation separation. According to the method, oil-containing sludge is used for replacing part of a traditional flotation reagent, efficient enrichment of carbonaceous and oil in the coal gasification fine slag and coal slime and separation of inorganic gangue are achieved through the steps of pretreatment, mixing, flotation and the like, and a clean coal product with the ash content smaller than or equal to 10% and the heat value larger than or equal to 7000 kilocalories and tailings with the oil content smaller than or equal to 1% (the lowest value can be 0.5% or below) and the ash content larger than or equal to 80% are obtained. According to the method, the dosage of traditional flotation reagents can be greatly reduced, the treatment cost is reduced, synergistic recycling and harmlessness of the three kinds of solid waste are achieved at the same time, and economic and environmental benefits are achieved.

The utility model discloses a blast furnace charging bucket gas recovery device which comprises a charging bucket, one side of the charging bucket is connected with a dust remover used for filtering gas through a pipeline, one side of the dust remover is connected with a high-pressure clean gas pipe network through a pressure equalizing pipe, and the surface of the high-pressure clean gas pipe network is connected with a low-pressure clean gas outer net through a first connecting pipe. The bottom of the high-pressure clean gas pipe network is connected with a first water tank, the bottom of the low-pressure clean gas outer network is connected with a second water tank, through connection between the multiple water tanks and the pipe network, it is ensured that gas can flow smoothly in the system, the problem of gas leakage is reduced, gas leakage is effectively prevented through the liquid seal principle of a U-shaped pipe, and the service life of the system is prolonged. And the joint of the bleeder and the second water tank is communicated with a low-pressure clean gas outer net through a third connecting pipe, and multiple pipelines work cooperatively, so that the gas can be fully collected and conveyed to a corresponding pipe network, and the gas recovery efficiency is remarkably improved.

The utility model discloses a steady-state rectification coarse slime separation device which comprises a product separation and collection area. The product sorting and collecting area is divided into a gangue collecting tank, a clean coal collecting tank and a fine coal slime collecting tank by a first partition plate and a second partition plate; discharge holes are formed in the bottoms of the gangue collecting tank, the clean coal collecting tank and the fine coal slime collecting tank; and a control valve is mounted on each discharge hole. The method has the advantages that under the action of laminar steady-state water flow, gangue particles are high in settling speed and first settle to the gangue collecting tank; coarse coal slime particles settle slowly and sink gradually in a layered mode after gangue particles settle and are separated, coarse coal slime particles overflow from the first partition plate to the clean coal collecting tank to be settled and collected, fine coal slime settle at the relatively slowest speed and overflow to the fine coal slime collecting tank through the second partition plate, and therefore the stable state that materials with specific particle sizes are separated according to density is formed. Therefore, gangue particles, coarse coal slime and fine coal slime are separated and collected in different areas, and the separation process is completed.

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 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 utility model relates to a track coal turning and cleaning vehicle belongs to coal cleaning equipment technical field, including frame, the wheel of rotating to be established in the bottom of frame a plurality, and install in the coal cleaning mechanism of frame, the coal cleaning mechanism includes the first coal turning plate and second coal turning plate of fixedly established in the frame and the inclination, the first coal turning plate lower edge is flush with the track surface, the length size of second coal turning plate is greater than the length size of first coal turning plate, the lower edge of second coal turning plate extends to the internal space of both sides track, the utility model discloses can drive coal cleaning vehicle to move through power mechanism, first coal turning plate moves first and turns out the coal in the track portion, to reduce the coal turning bearing of second coal turning plate, second coal turning plate can turn out the coal in the track and discharge track after moving, cooperate with the track surface and wipe clean mechanism and wipe the track, can turn coal and clean coal to the track, prevent the derailment of subsequent vehicle due to track coal, improve the safety performance of track.

The invention relates to the technical field of raw coal flushing, and discloses a coal dressing cyclone feeding flushing device which comprises a supporting groove seat. The inclined cylinder screen A is rotationally connected to the interior of the supporting groove base, and an inclined cylinder screen B is rotationally connected to the exterior of the inclined cylinder screen A; connecting the driving mechanism; the spiral plate is fixedly connected to the interior of the inclined drum screen A; a flushing mechanism; the lifting plates are fixedly connected to the inner side of the inclined cylinder screen B in the circumferential direction and are distributed at equal intervals in the axial direction of the inclined cylinder screen B; and a coal grinding mechanism. The spiral plate can rotate along with the inclined cylinder screen A and push coarse clean coal, the coarse clean coal can be prevented from being accumulated in the inclined cylinder screen A through boosting of the spiral plate, uniform movement of the coarse clean coal can be ensured, the coarse clean coal which uniformly moves in the inclined cylinder screen A can be flushed step by step through the flushing spray head, and the cleaning efficiency is improved. And mud impurities, fine dust and soluble pollutants in the coarse clean coal are removed, so that the separation precision and long-term stable operation of the dense medium cyclone are guaranteed.

The invention relates to the technical field of coal mine flotation, and discloses a coal mine screening flotation device which comprises a barrel, a vibrating screen body fixedly connected to the surface of the barrel, an air blower fixedly connected to the surface of the barrel in the direction away from the gravity center of the earth surface, and a driving mechanism arranged on the barrel and used for conducting flotation treatment on coal fed into the barrel in the working state. The reversing mechanism is arranged at the output end of the air blower and comprises a Y-shaped pipe fixedly connected to the output end of the air blower, one end of the Y-shaped pipe is fixedly connected with a fixed pipe, the end of the fixed pipe is fixedly connected with an annular pipe, and a plurality of L-shaped pipes are fixed to the surface of the annular pipe in the circumferential direction at equal intervals. Through the arrangement of the reversing mechanism, high-speed airflow generated by the small-caliber spray pipe forms reverse rotational flow towards the barrel bottom of the barrel body, a coal gangue mixture deposited at an edge'dead zone 'can be effectively pried and cleaned, the problem of clean coal loss caused by bottom deposition of a traditional flotation machine is thoroughly solved, and therefore the clean coal recovery rate is remarkably improved.

The utility model relates to the technical field of ultrasonic cleaning machines, in particular to a rough cleaning mechanism of an ultrasonic cleaning machine for cleaning a coal mine filter element, which comprises a machine body, a rough cleaning tank is arranged outside the machine body, a placing basket is placed inside the rough cleaning tank, and a moving mechanism comprises a supporting column, a rotating shaft, a moving shaft and a connecting rope. The rotating mechanism comprises a gear, a rack, a limiting frame and a guide hole, after cleaning is completed, the moving shaft winds the connecting rope, the connecting rope drives the containing basket connected with the connecting plate to move upwards, and when the containing basket is moved out of the rough cleaning tank, the containing basket is moved to the position above the fine cleaning tank; a worker lifts the placing basket through mechanical transmission, manpower consumption is reduced, labor intensity is reduced, meanwhile, the lifting process of the placing basket is stable and orderly through mechanical transmission, the shaking risk of the placing basket is reduced, filter element damage caused by mutual collision between filter elements is prevented, and then the service life and the filtering performance of the filter elements are guaranteed.

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 relates to the technical field of coal mine separation, and discloses a separation device for ore decontaminating of a coal preparation plant, which comprises a retention barrel, a discharging hopper fixedly arranged at the top of the retention barrel, and a plurality of guide assemblies arranged in the retention barrel at intervals in the vertical direction, each guide assembly comprises a diversion bin fixedly connected to the inner wall of the retention barrel, a curve notch is formed in the flow dividing bin, the extending path of the curve notch is in an S shape, the channel width of the curve notch is gradually decreased in the gravity direction, and a first jet pipe facing the inner side curved surface of the curve notch is arranged at the S-shaped bent position of the curve notch. Through the arrangement of the guide assembly and the distribution assembly, in the coal mine separation process, a first jet pipe is used for jetting a coal mine mixture in a curved notch, gangue and coal dust and coal slime wrapped by coal are scrubbed, the utilization path is prolonged, and beneficial materials in the sunken position of the gangue are flushed when the gangue rolls back and jumps, so that the separation efficiency of the gangue is improved, and the separation efficiency of the gangue is improved. And the fine-grain clean coal mixed in the gangue layer is gently washed out, floats upwards and is recycled.

The invention discloses a microemulsion collecting agent applying jatropha curcas oil to low-rank coal flotation and preparation and application of the microemulsion collecting agent, and belongs to the technical field of low-rank coal flotation, the microemulsion collecting agent is composed of jatropha curcas oil biodiesel, a surfactant, a cosurfactant and water, and the preparation method of the microemulsion collecting agent comprises the steps that 1, crude jatropha curcas oil and methyl alcohol are subjected to transesterification in the presence of a basic catalyst, the jatropha curcas oil biodiesel is obtained; (2) dissolving a surfactant in water to prepare a solution; (3) mixing the jatropha curcas oil biodiesel with a surfactant solution, adding a cosurfactant, and stirring at room temperature to form a microemulsion; and (4) the microemulsion is filtered, and the microemulsion collecting agent is obtained. The collecting agent solves the problems that a low-order bituminous coal flotation collecting agent is low in selectivity, poor in collecting performance, large in agent dosage, low in clean coal yield and high in ash content, and has good industrial application and popularization prospects.

The coarse slime TBS separation and desliming equipment comprises a separation machine, the separation machine comprises a separation barrel, the top of the separation barrel is provided with an overflow weir, the bottom of the overflow weir is communicated with an overflow cavity, one side of the overflow cavity is provided with a desliming box body through a connecting flange, and the bottom of the desliming box body is provided with a discharge port; when low-density clean coal sorted by a sorting machine flows into the desliming box body along with ore pulp, the ore pulp is decelerated through the flow guide inclined plate, fine-particle high-ash fine silt floats to the upper layer, the clean coal without the fine-particle high-ash fine silt is settled to the bottom layer, and the settled clean coal is discharged from the silt discharging opening, enters the grading desliming assembly and flows along the S-shaped directional runner plate; the fine silt is intercepted by the grading screen with the gradually decreased aperture, and qualified low-ash particles fall into the clean coal collecting tank and are discharged from the discharge port, so that the high-ash fine silt intercepting efficiency is greatly improved, the ash content of clean coal products is effectively reduced, the high-ash fine silt is smoothly discharged, and the clean coal recovery rate and the product quality are improved.

The utility model belongs to the technical field of coal chemical industry, and particularly relates to a closed dry-method discharging device for a dry distillation process of silty coal. A closed type dry-method discharging device for a powder coal dry distillation process comprises a discharging bin support foundation, a second-section sealed type discharging bin, a first-section sealed type discharging bin and a powder coal dry distillation chamber tail are sequentially arranged above the discharging bin support foundation, the upper portion of the first-section sealed type discharging bin is fixedly connected with the powder coal dry distillation chamber tail, and the lower portion of the first-section sealed type discharging bin is fixedly connected with the powder coal dry distillation chamber tail. The lower portion of the first-section sealed discharging bin is fixedly connected with the upper portion of the second-section sealed discharging bin, a first-section discharging bin air-water adjusting pipe and a first-section discharging bin inner spraying pipe are arranged on the side wall of the upper portion of the first-section sealed discharging bin, and a second-section discharging bin air-water adjusting pipe and a second-section discharging bin inner spraying pipe are arranged on the side wall of the upper portion of the second-section sealed discharging bin. According to the utility model, by using a two-section air sealing and extinguishing structure, the production energy consumption can be reduced, and the quality of clean coal can be improved at the same time.

The utility model relates to the technical field of coal cleaning, in particular to a coal floating ash cleaning device which comprises a rack. The belt conveying mechanism is arranged on the rack in the length direction of the rack; the spraying mechanism is arranged on the rack and located above the belt conveying mechanism; the rolling brush mechanism is arranged on the rack and located above the belt conveying mechanism; the water circulation mechanism is connected with the spraying mechanism and is arranged below the belt conveying mechanism; the rotary material stirring barrel is rotationally mounted on the rack and located above the feeding end of the belt conveying mechanism; wherein the belt conveying mechanism can drain water. The heavy coal washing device effectively solves the problem that heavy coal washing equipment in the prior art is not suitable for coal floating ash cleaning.

The application discloses a kind of full-automatic coal flow quick separation gangue in-situ filling system and filling method, and filling system includes: heavy medium separator, selected clean coal conveyor, selected gangue conveyor, goaf gangue conveyor and rear filling conveying equipment;The feed inlet of heavy medium separator is located below the external raw coal crusher;The conveying belt of selected clean coal conveyor is located near the top of heavy medium separator;The conveying belt of selected gangue conveyor is located near the bottom of heavy medium separator;The discharge end of goaf gangue conveyor is located above the feed end of rear filling conveying equipment, and the discharge end of rear filling conveying equipment is located above goaf.The raw coal and gangue of raw coal flow are quickly separated from the mining source, and the separated gangue is directly conveyed to goaf for in-situ filling, which realizes gangue separation and local treatment, reduces the pollution to the ground environment, surface subsidence, and reduces the production and transportation cost of mine.