322 results about "Coal waste" patented technology

The invention discloses a low-temperature methanol washing RTO tail gas treatment device adopting a self-circulation air cooling double-valve-plate butterfly valve, and relates to the technical field of waste gas treatment. By arranging the condensation impurity removal mechanism, when coal waste gas passes through one condensation assembly, low-temperature tail gas cleaned by the low-temperature methanol washing mechanism can flow through a plurality of heat exchange pipes in the condensation assembly at the same time, so that the temperature of the outer walls of the heat exchange pipes is rapidly reduced to be below zero DEG C; coal tar gas and water vapor flowing through the low-temperature heat exchange pipe can be quickly cooled and solidified after being in contact with the outer wall of the low-temperature heat exchange pipe, so that the effect of separating the coal tar gas and the water vapor from the tail gas is achieved; a cold source which cannot be utilized and can influence subsequent RTO furnace treatment in the part of tail gas is ingeniously used for separating energy of coal tar and water vapor in the waste gas, a refrigerating device does not need to be independently arranged in the cooling and condensing process of the coal tar and the water vapor, and the purposes of energy conservation and emission reduction are achieved.

The invention relates to the technical field of coal mine roadway tunneling and supporting, in particular to a tunneling and anchoring all-in-one machine suitable for complex geological roadways, which comprises a walking body part, a loading part, a conveying part, a cutting part, a drilling and anchoring platform and a dust removal and temporary supporting system, a rear support deviation adjusting system is arranged at the tail part of the walking body part; the cutting part is used for tunneling, the loading part is used for collecting coal cinder, and the transporting part is used for receiving and transporting coal cinder; the anchor drilling platform comprises a top anchor supporting unit and a side anchor supporting unit; the dust removal and temporary supporting system comprises a supporting frame body, a supporting top plate is arranged on the supporting frame body in a sliding mode, and a telescopic supporting top rod is arranged between the supporting frame body and the walking body part. The invention further provides an anchor protection method suitable for the complex geological roadway, and the problems that in the current weak surrounding rock coal roadway tunneling three-soft stratum, wall caving is prone to occurring, roof caving is prone to occurring, wall breaking is prone to occurring, anchor rod supporting of a low roadway is difficult, and bottom plate argillization equipment is prone to tail swinging are solved.

The invention provides an AI vision-based coal cinder amount intelligent detection early warning method and system, and the method comprises the steps: synchronously collecting the surface feature information, thermal radiation feature and internal structure information of a slag hopper of a slag conveyor through a dual-spectrum camera, and obtaining a dual-spectrum image; pixel-level coal cinder segmentation is carried out on the double-spectrum image; based on the segmentation result, counting the pixel proportion of the coal cinder area, and converting the pixel proportion into the actual coal cinder total amount proportion; identifying the segmented coal cinder area by adopting connected domain analysis, dynamically adjusting a size judgment threshold value through contour analysis and geometric feature extraction in combination with the bearing capacity of the slag conveyor, and determining whether large coal cinder exists or not; when the actual coal cinder total amount proportion is larger than the preset threshold value or large coal cinder exists, the risk level is generated to trigger the multi-level early warning control action, the actual coal cinder total amount proportion and the large coal cinder are automatically recognized through double-spectrum fusion segmentation, and early warning is given out when abnormity occurs, so that the accuracy and the real-time performance of coal cinder amount detection are effectively improved.

The invention provides an underground coal mine electric locomotive transportation system. The underground coal mine electric locomotive transportation system comprises an electric locomotive body, two rails, a cleaning assembly, a limiting assembly, a smearing assembly, a conveying device and a lifting device. According to the coal mine underground electric locomotive transportation system, the cleaning brush of the cleaning assembly makes contact with the surface of the rail, coal cinder and sundries on the surface of the rail can be removed in real time along with running of the electric locomotive body, it is avoided that abrasion of the rail is aggravated by the impurities, and the manual cleaning cost is reduced; the smearing assembly evenly smears a lubricant conveyed by the conveying device to the surface of the track through smearing cotton, and in cooperation with pretreatment of the cleaning assembly, track abrasion can be effectively reduced, the service life of the track is prolonged, and the manual maintenance frequency is reduced. The circular limiting block of the limiting assembly is attached to the inner side wall of the rail, abutting limiting is provided when the electric locomotive body deviates transversely, derailing is prevented, and the driving safety is improved.

The invention is applicable to the technical field of road construction, and provides a digging and filling method for highway subgrade construction, which comprises the following steps: T1, carrying out construction operation according to a construction drawing, digging a pavement through a digging machine to form a groove, and piling dug soil on the ground on two sides of the groove; t2, the grooves are evenly filled with filling materials such as stone, coal cinder and gravel; t3, the road roller is controlled to slowly move along the foundation pit, a soil returning device at the front end of the road roller is used for backfilling soil on the two sides of the foundation pit, and a compaction steel wheel at the rear end of the road roller is used for compacting the backfilled groove; the soil returning device comprises a fixing assembly and a backfilling assembly arranged on the fixing assembly in a sliding mode. According to the method, the rotating shaft is controlled to rotate to drive the two sets of spiral conveying blades with opposite spiral directions to synchronously rotate, most of soil on the two sides of the groove is conveyed into the groove, the two sets of bulldozing plates are driven to push the residual coating into the groove through linkage of all the parts, and the backfilling efficiency is improved.

This invention provides a coal mine wastewater retreatment device, comprising a treatment tank with two sets of symmetrically distributed support legs fixed at the bottom. A filter screen is installed inside the treatment tank. An inlet pipe is connected to the top of one side of the treatment tank, and an outlet pipe is connected to the bottom of the other side. An adsorption mechanism for removing iron-containing impurities is installed at the top of the treatment tank, comprising a magnetic column with two symmetrically distributed circular plates fixed to its outer side. The coal mine wastewater retreatment device provided by this invention solves the problem that existing treatment devices' filters are limited to filtering coal slag and are not suitable for cleaning iron-containing impurities in coal mine wastewater. This results in iron-containing impurities mixing inside the coal mine wastewater and entering the environment along with the wastewater discharge, leading to high iron content in the environmental water and making the water prone to turbidity due to reaction with oxygen in the air.

The application discloses a kind of coal mine underground mining wear-resistant active resistance-reducing drill pipe and its use method, including drill pipe body, spiral steel sheet is arranged around the outer wall of drill pipe body, spiral steel sheet is arranged along the length direction of drill pipe body, ball is rotationally arranged on the side wall of spiral steel sheet away from drill pipe body, part of ball is located in spiral steel sheet, another part is located outside spiral steel sheet.In using the application, after setting the position of drilling machine and the angle of holder, the drill bit is connected with the new wear-resistant resistance-reducing drill pipe, and then the drill bit and the drill pipe are clamped with the holder, the drill bit and the drill pipe are rotated and drilled into the coal wall or rock wall, the coal slag and rock slag generated during drilling are discharged from the drill hole through the spiral steel sheet, the rotatable ball embedded on the spiral steel sheet, the resistance during drilling process is reduced, the efficiency is improved, the drill pipe wear is reduced, and the friction heat is reduced.For the service life of drill pipe, drilling efficiency and construction safety, all have been improved.

The utility model belongs to the field of coal mine drilling blowout prevention holes, and aims to solve the problems that water and coal cinder in a hole easily and directly enter a main pipeline, gas fluctuation is easily caused by opening small negative pressure, and hidden dangers are caused to production efficiency and production safety in a traditional gas-water separation device. The utility model provides a common drill four-hole gas-water separator which comprises an upper-layer barrel, a lower-layer barrel and a pipeline connected between the upper-layer barrel and the lower-layer barrel. The upper surface of the upper-layer barrel body is provided with a pipe orifice for connecting a main pipeline negative pressure, an orifice blowout preventer, an orifice standby negative pressure and a hole wall standby negative pressure; the lower-layer barrel is located at the lower end of the upper-layer barrel, a second valve is arranged at the bottom of one side of the lower-layer barrel, and a first valve is arranged on a pipeline between the upper-layer barrel and the lower-layer barrel. The device is high in reliability, the problem that water and coal slag enter an extraction system in the drilling machine construction process can be effectively solved, and gas fluctuation caused by water drainage is avoided.

The utility model belongs to the field of transportation, particularly relates to a coal blocking device for a transshipment buffer area of a belt conveyor, and aims to solve the problems that some scattered coal mines can fall off in the transshipment process of an existing conveyor, follow-up transportation is affected, and waste is caused. According to the technical scheme, the device comprises a rack and a buffer plate, a rectangular hole is formed in the rack, a plurality of fixing plates are fixedly connected to the two sides of the top of the rack, the fixing plates are rotationally connected with the buffer plate, a collecting assembly is arranged below the rectangular hole, a fixing block is arranged at the top of the rack, and an adjusting assembly is arranged on the fixing block; when a conveyed coal mine falls off, the inclination degree of the buffer plate can be adjusted according to the size of the coal mine, the coal mine rapidly slides off through the inclined groove, the rotating plate can be pushed to rotate, one end of the adjusting screw pushes the buffer plate to swing in a small range, then residual coal cinder can be vibrated off through swing of the buffer plate, and the follow-up collecting process is facilitated.

The utility model belongs to the technical field of coal mine gas extraction, and discloses a gas drainage drill hole accumulated water and slag treatment device which comprises a water and slag storage box body, a slag accumulation net and a first layer of filter net are arranged in the water and slag storage box body from bottom to top, and a water and slag inlet, a water outlet and a slag outlet are formed in the side wall of the water and slag storage box body; the water and slag inlet is formed between the slag deposition net and the first-layer filter net and is used for mounting a first connecting pipe; the water outlet is formed in the bottom of the slag deposition net; the slag discharging opening is formed between the slag accumulating net and the first-layer filter net and is opposite to the water and slag inlet; a second connecting pipe is arranged at the top of the water and slag storage box and used for being connected with a negative pressure drainage pipe, and the negative pressure drainage pipe is used for sucking accumulated water and slag at the bottom of the gas drainage drill hole into the water and slag storage box through negative pressure. According to the utility model, the problem that the drainage pipeline is blocked due to accumulated water and coal slag after the drainage drill hole is opened is solved.

The present application provides an intelligent coal powder screening device, method, and system. In one example, a coal powder particle size detector is used to perform real-time detection of the coal powder particle size after being filtered by a dynamic screening device, determine the proportion of coal powder with a target particle size in the filtered coal powder, and send the target particle size proportion in the filtered coal powder to a controller; a coal powder separation device is used to separate the coal powder that has not passed through the dynamic screen, and the coal powder with a particle size larger than a specified value that has not passed through the dynamic screen is returned to the coal mill for re-grinding, and the remaining coal powder is conveyed to the screen of the dynamic screen for re-filtration, thereby reducing coal waste and improving coal powder screening efficiency; in addition, a coal powder concentration meter is used to measure the concentration of coal powder with a particle size larger than a specified value in the coal powder separation device in real time, and the coal powder concentration is sent to the controller, further improving coal powder filtration efficiency.

The utility model relates to the technical field of boiler continuous feeding mechanisms, in particular to a high-temperature and high-pressure boiler continuous feeding mechanism which is characterized in that coal cinder is placed in a drying mechanism, wet coal is dried by starting the drying mechanism, and the dried coal cinder is discharged to a feeding mechanism through the drying mechanism. The coal cinder is evenly placed in the boiler through cooperation of the feeding mechanism and the moving mechanism, the combustion rate of the coal cinder is increased, the coal loading box of the feeding mechanism is discharged by starting the auxiliary mechanism, and the practicability of the equipment is improved; a boiler is included; the device further comprises a drying mechanism, an exhaust mechanism, a feeding mechanism, a moving mechanism and an auxiliary mechanism, the boiler is located on the left side of the moving mechanism, the drying mechanism is installed on the moving mechanism, the exhaust mechanism is installed on the drying mechanism, the feeding mechanism is installed on the moving mechanism and located below the drying mechanism, and the auxiliary mechanism is installed on the moving mechanism. The auxiliary mechanism is located on the left of the drying mechanism.

The invention discloses a planting method for increasing the carbon sink capacity of a saline-alkali soil ecological system and application. A planting method for increasing the carbon sequestration capacity of a saline-alkali soil ecosystem adopts an agriculture and forestry composite planting mode, ricinus communis is planted in a forest land, the carbon sequestration capacity of the saline-alkali soil ecosystem is increased by matching a fertilizer and a soil conditioner, the fertilizer comprises a compound fertilizer, the nitrogen content of the compound fertilizer is 15-18%, the phosphorus content of the compound fertilizer is 15-18%, the potassium content of the compound fertilizer is 15-18%, the application amount of the compound fertilizer is 417-450 kg.ha <-1 >, and the application amount of the compound fertilizer is 20-30 kg.ha <-1 >. The soil conditioner comprises coal cinder charcoal or rice husk charcoal. According to the planting method, the soil carbon reserve can be increased, and the plant carbon sequestration amount and the ecological system carbon sequestration total amount are remarkably increased. A research result provides a theoretical basis for ecological restoration and sustainable utilization of the coastal saline-alkali soil, and shows that the aims of reducing saline-alkali obstacles and fixing carbon and increasing sink can be synchronously achieved through coupled application of biological measures and a soil improvement technology, and the method has important ecological practical value.

The utility model relates to the technical field of coal mine belt conveyors, in particular to a belt conveyor slag removal assembly used for a coal mine and a belt conveyor, the slag removal assembly comprises a base and a support, the support is installed on the base, and a through type first cavity is formed in the support; the top rollers are elastically mounted on the upper surface of the first cavity; the multiple cleaning brushes are elastically mounted on the lower surface of the first cavity; the first spraying assembly extends into the first cavity from the outside and can spray water to the cleaning brush; the sliding rail is installed on the base, and the support is installed on the sliding rail in a sliding mode; the reciprocating motion mechanism is installed on the base, connected with the support and used for driving the support to reciprocate on the sliding rail. The belt conveyor effectively solves the problem that coal cinder on the surface of the belt conveyor is not easy to clean in the prior art.

This utility model relates to the field of honeycomb briquette stove technology, and in particular discloses a honeycomb briquette stove with convenient slag removal, including a furnace frame and a furnace core mounted on the furnace frame for holding coal; it also includes a slag removal mechanism mounted on the furnace frame and used in conjunction with the furnace core. The slag removal mechanism includes a loading component, a slag pushing component movably mounted relative to the loading component, and a transmission mechanism that works in conjunction with the slag pushing component. The loading component is used to carry the coal located at the bottom of the furnace core. A first clearance space is provided between the loading component and the furnace core for the movement of the slag pushing component and the coal at the bottom of the furnace core. The user drives the slag pushing component to move back and forth through the transmission mechanism, so that the slag produced by the combustion of the coal at the bottom of the furnace core is pushed out. This utility model achieves rapid slag removal by setting a foot-operated transmission mechanism and using a mechanical slag pushing mechanism, avoiding the risks of manual operation and improving combustion efficiency; the setting of the limiting and dividing component further divides the slag during the removal process, preventing blockage and accumulation.

The application discloses a kind of three-proofing devices for coal mine, including outer tube, inner tube, slag discharge cylinder;Outer tube is connected with inner tube by positioning mechanism, and the outer end of slag discharge cylinder is provided with drill pipe sealing mechanism, and the peripheral portion close to the outer end of slag discharge cylinder is provided with gas extraction interface, coal slag discharge interface.The three-proofing device of the application can be installed on the drilling hole opening wall of gas extraction main pipeline construction, which can prevent fire, prevent back gas and prevent explosion;Among them, the drill pipe sealing assembly has the effect of blocking gas, so that it cannot enter the tunnel, which avoids the condition that gas leakage in drilling operation leads to the threat to the life safety of construction personnel, improves the safety of coal mining operation, and has perfect functionality, and has fixing and sealing effect simultaneously, effectively prevents gas leakage;And it is convenient to install, simple to disassemble, widely applicable, with large stroke range of expansion mechanism, can be applied to various aperture, can prevent spouting and outburst, further improves the use effect of the application.

The utility model relates to the technical field of coal cinder treatment, in particular to a high-pressure coal cinder flushing blanking device for a coal cleaning plant, which comprises a blanking hopper, a support plate, a water tank, a booster pump and a flushing component. And the water tank is arranged at the bottom of the supporting plate, and the booster pump is arranged at the top of the supporting plate. The flushing assembly is composed of a supporting frame, a motor, a rotating plate, a connecting rod and an L-shaped frame, a nozzle is installed on the L-shaped frame and communicates with a booster pump through a spraying pipe, and the input end of the booster pump communicates with the water tank. According to the device, through cooperation of the booster pump and the flushing assembly, automatic high-pressure flushing of coal cinder crust on the side wall of the blanking hopper is achieved, the labor intensity and potential safety hazards of manual cleaning are reduced, meanwhile, the flushing angle and the waste water flow guide design are optimized, and the cleaning range, the flushing quality and the system stability are improved.

The invention relates to the technical field of gas separation, and discloses a separation device for coal mine gas extraction, which comprises an upper separation tank body and a lower separation tank body which are communicated with each other, and the upper part of the upper separation tank body is provided with an extraction pipeline access pipe and an exhaust pipe; the spiral separation mechanism is used for separating gas and comprises a spiral plate, a vertical pipe is installed in the spiral plate, a spiral downward separation space is formed between the spiral plate and the vertical pipe, and the upper end of the separation space is sealed through a sealing plate; and the inclined separation filter frame is used for separating coal cinder. Mixed fluid can enter the separation space in the tangential direction and rotationally move downwards, slag and water are made to be prior to sedimentation of gas, fine coal slag and small water drops with small particle sizes in the gas can be centrifugally separated out, the gas discharged into the separation space can float upwards through the vertical pipe to be discharged, and the gas separation efficiency is improved. Therefore, fine coal cinder and small water drops with small particle sizes in the gas can be effectively separated.

The utility model provides a slag storing and discharging system of a drainage pipe. The slag storing and discharging system of the drainage pipe comprises a slag discharging box, an overflow pipe and a slag discharging pipe. When the slag storage and discharge system for the drainage pipe is used, liquid in the drainage pipe is discharged into the slag discharge box, coal slag in the liquid is precipitated in the slag discharge box and can be discharged through the slag discharge pipe, and the liquid in the slag discharge box can overflow from the overflow pipe below and then flow into the water drainage device. When the height of coal slag in the slag discharging box exceeds the height of the lowest overflow pipe or the lower overflow pipe is blocked, liquid in the slag discharging box can overflow from the upper overflow pipe. When an operator inspects or inspects on site, after liquid is discharged from the automatic water discharging device corresponding to the overflow pipe located on the upper portion, abnormity can be found in time, deslagging operation can be carried out, dredging maintenance can be carried out on the overflow pipe located on the lower portion, and the situation that liquid cannot be discharged from the interior of the deslagging box, and later gas drainage is affected is avoided.

This invention belongs to the field of coal mine gas control technology, and particularly relates to a connection device and method for laying protective casing in large-diameter boreholes in easily collapsed coal seams. The device includes a drill bit connector, a force converter, a plug, and a bearing. The axis of the drill bit connector is parallel to the axis of the drill bit. One side of the drill bit connector is connected to the drill bit. One side of the force converter has a hollow interior bearing, and the other side has a protective casing connection thread for connecting the protective casing. The plug passes through the bearing and connects to the other side of the drill bit connector. The method for laying the protective casing includes drilling; assembling the protective casing connection device; installing the protective casing connection device; laying the first section of protective casing; laying the protective casing throughout the entire borehole; and sealing the borehole. The protective casing in this invention changes from unidirectional movement within the borehole to bidirectional movement that allows for both forward and backward movement, reducing the difficulty of handling collapsed boreholes. The laying method changes the traditional top-insertion method to a pull-out method, laying the protective casing while retracting the drill rod, which can utilize the rotation and retraction of the drill rod to remove coal slag and collapsed coal blocks from the borehole.

The present application relates to the technical field of coal mine safety protection, and discloses a protection structure and method of gas extraction drilling, which comprises a box, a four-way pipe and an air bag. Two through holes are formed in the upper part of the box, one of which is connected with a second pipeline. The other end of the second pipeline is used for being connected with a negative pressure pipeline, so that gas is sucked into the negative pressure pipeline. The four-way pipe is connected above the box. The lower end of the four-way pipe is connected with the other through hole of the box through a first pipeline. One of the transverse ports of the four-way pipe is sealingly connected with a hole sealing pipe at the outlet of the drilling. The other transverse port is connected with a sealing sleeve for sealing the gap between the drilling tool. The air bag is connected with the four-way pipe. One side opening of the air bag is connected with the top longitudinal port of the four-way pipe through a third pipeline. The other side opening of the air bag is connected with a fourth pipeline for being connected with the negative pressure pipeline. With the ejection of gas, coal residue and coal residue water, the three are respectively introduced into the box and the air bag through the four-way pipe.

The utility model discloses an underground automatic drainage system for a coal mine, which comprises a filter box and a waste scraping mechanism, and the front side and the rear side of the upper surface of the filter box are respectively provided with a sliding chute; the waste scraping-out mechanism comprises lead screws, sliding seats, sliding rods, limiting blocks, scraping plates and first springs, the lead screws are rotationally connected to the front side and the rear side of the interior of the filtering box, the outer threaded faces of the two lead screws are in threaded connection with the interior of one sliding seat, and the sliding rods are slidably connected to the front side and the rear side of the sliding seat; the lower surfaces of the two sliding rods are fixedly connected with the upper surface of a scraper, the upper surfaces of the sliding rods are fixedly connected with limiting blocks, and the outer side faces of the sliding rods are movably sleeved with first springs. According to the automatic drainage system for the underground coal mine, when coal cinder is filtered, large coal cinder can directly fall into a waste box, and the waste scraping mechanism can scrape small coal cinder; the effect of cleaning the filter plate is achieved, and the filtering efficiency is not influenced.

The application discloses a coal mill slag discharging device, which comprises a slag discharging mechanism, the slag discharging mechanism comprises a slag discharging boom, the top end of the slag discharging boom is fixedly connected to the bottom surface of a coal mill, the bottom end of the slag discharging boom is fixedly connected with a slag discharging cylinder, the bottom end of the slag discharging cylinder is fixedly connected with an aggregation pipe, the bottom end of the aggregation pipe is fixedly connected with a slag discharging pipe, and the top surface of the slag discharging cylinder is fixedly connected with two slag falling pipes; the reverse flip reciprocating mechanism can reset the stirring mechanism, the one-way limiting mechanism can clamp the slag conveying structure in the process of resetting the stirring mechanism, reverse rotation of the slag conveying structure is avoided, one-way rotation of the slag conveying structure is ensured, continuous rotation of the slag conveying structure can timely and quickly discharge the coal slag in the coal mill, the influence of the coal slag on the coal mill is greatly avoided, the slag discharging process is fully automatic, manual operation is not needed, time and labor are saved, and the practicality of the coal mill slag discharging device is improved.

The utility model discloses an automatic cleaning device for attached belts, which can effectively collect dropped coal cinder by arranging a collecting hopper at a belt conveyor roller, connecting rods are hinged on two sides of the collecting hopper, the top ends of the connecting rods are hinged with a scraper blade, one end of the scraper blade is connected with the belt conveyor roller through a lifting rod, and a sliding block is arranged at the bottom end of the lifting rod. The sliding block is driven by the threaded rod, reciprocating motion can be adjusted, the scraping plate makes contact with a belt on a belt conveyor roller, the position of the scraping plate is adjusted through sliding of the sliding block, and therefore the angle of the scraping plate is adjusted, the scraping plate can effectively scrape off coal cinder attached to the belt, the coal cinder falls into the collecting hopper, and the trapezoidal conveying hopper is arranged at the bottom of the collecting hopper. Collected coal cinder can be conveyed to a feeding port of the spiral vertical conveyor through the material conveying pipe, the spiral vertical conveyor is driven by the driving motor, the coal cinder is conveyed into the conveying pipe from a discharging port, the conveying pipe is arranged at an angle, the coal cinder falls back to a conveying belt of the belt conveyor through sliding, and circulating conveying of materials is completed.

The invention provides a large-flow-state coal-based solid waste filling material as well as a preparation method and application thereof, and belongs to the technical field of building materials. The coal ash and the coal cinder are rich in silicon and aluminum components and can be compounded with the aeolian sand to prepare a large-flow-state material, the cohesiveness can be improved by exciting the gelatinization activity in a synergistic utilization mode, the framework effect of the aeolian sand and the coal cinder can be achieved, the shrinkage crack risk is effectively reduced, and the anti-cracking performance is improved. And a feasible path is provided for solid waste recycling and efficient utilization of the aeolian sand. According to the invention, coal-based solid wastes (fly ash, coal cinder and gypsum), aeolian sand and cement are used as main raw materials, and a water reducing component, a retarding component, an air entraining component and an expansion component are added; the large flow state, low shrinkage and good durability of the material are achieved through a gel system (low cement-high fly ash-gypsum synergistic excitation), aggregate grading (coal cinder-aeolian sand proportion control) and functional additive compounding, and an innovative solution is provided for bridge abutment back backfilling in cold regions.

The utility model discloses a waste recovery device, which comprises a recovery bin, a first material inlet, a second material inlet, a third material inlet, a fourth material inlet and a fifth material outlet, a screening part; comprising a screening plate arranged in a recovery bin, and a vibration component is arranged below the screening plate; the dispersing component comprises a transmission assembly arranged above the screening plate and a plurality of scraping plates arranged on the transmission assembly; according to the coal cinder screening device, after coal cinder falls onto the screening plate, the coal cinder is driven by the scraping plates to move towards the first discharging opening through cooperation between the screening component and the dispersing component, the coal cinder is prevented from being accumulated at the end, close to the feeding opening, of the screening plate, and in the process that the scraping plates drive the coal cinder to move, the scraping faces of the scraping plates move the coal cinder towards the two sides of the screening plate; the coal cinder can be evenly distributed on the screening plate, and the working efficiency of the screening plate is improved.

The invention provides a coal water slag metering device based on a crushing mechanism. The coal water slag metering device comprises a metering device body, and a motor is mounted on the metering device body; the metering device body is further provided with a flow adjusting hand wheel. A detection pipe is fixedly connected to an opening in one side of an output pipe of the metering device body, a particle sensor is fixedly connected to the top end of the detection pipe, and a smashing mechanism is fixedly connected to an input pipe of the metering device body. Through the arrangement of the protective cover, the cooling fins, the inlet and outlet pipe, the rotating machine core, the crushing motor, the roller ball sleeve and the grinding roller ball, large-particle coal slag in coal slurry can be prevented from entering the metering device, and normal work of the metering device is guaranteed.

The application discloses a coal-water separation device, which comprises a base and a caterpillar belt for moving the base, wherein the base is provided with a coal-water separation tank and a water storage tank, and the coal-water separation tank and the water storage tank are communicated through a drain pipe; a filter plate capable of floating is arranged in the coal-water separation tank, a V-shaped receiving plate is arranged below the filter plate, a filter core for secondary separation is arranged below the receiving plate, water separated in the coal-water separation tank flows into the water storage tank through the drain pipe, a coal discharging baffle is arranged on one side of the coal-water separation tank, and the coal discharging baffle is locked through a limiting lock rod; the coal-water separation device can realize coal-water separation and slag-water separation, can separate water from coal to a larger extent, and can collect the separated coal, slag and water, and is suitable for promotion and use.

FIELD: mining.SUBSTANCE: invention relates to methods for thermal monitoring of coal waste dumps. Temperature measurements are taken inside the dump (2) using temperature sensors (3) located in its near-surface zone (1). Temperature readings from the temperature sensors (3) are transmitted to the monitoring center (4), where the source of self-heating is identified by the recorded excess of the standardized maximum temperature of the dump in at least one of the locations of the temperature sensor. To clarify the contours of the self-heating source, measurements of the thermal field are taken along the profiles above the dump using unmanned aerial vehicles (6) with thermal imaging control equipment installed on them. The profiles for the flight of unmanned aerial vehicles are oriented along the lines connecting each point of placement of the temperature sensor, in which an excess of the standard maximum temperature of the dump is recorded, with the points of placement of the temperature sensors adjacent to it.EFFECT: increased accuracy and efficiency, as well as reduced labour intensity of establishing contours of self-heating centres of coal waste.1 cl, 1 dwg

The present invention provides a method for preparing normal temperature and low pressure biomass particles, which include the following raw materials in parts by mass: 20-30 parts of cow dung, 10-15 parts of black pine leaves, 5-8 parts of poplar sawdust, 15-20 parts of coal slag, 8-12 parts of vegetable oil, 3-6 parts of bonding aid, and 1-3 parts of combustion improver. The method for preparing normal temperature and low pressure biomass particles includes the following steps: uniformly stirring cow dung, black pine leaves, coal slag, poplar sawdust, vegetable oil, bonding aid, and combustion improver, crushing, and sieving to obtain a mixture; then inoculating a fermentation agent into the mixture, fermenting in a stacking fermentation manner, and obtaining a fermented product; extruding the fermented product into cylindrical particles and drying. The present invention successfully solves the problem of low calorific value of crop biomass fuel, which not only greatly improves the economic benefits of crop waste, but also increases the energy density of biomass fuel.