52results about How to "Achieve re-use" patented technology

The invention provides an agriculture and forestry wet compound system and a comprehensive synergistic method for a rice farming aquatic product area. The agriculture and forestry wet compound system comprises an ecological rice field area, an ecological pond area, a forest and wet compound area, an aquatic product culture area and an ecological hydroponic area. The ecological paddy field area is communicated with the ecological pond area through a pipeline, the ecological pond area is communicated with the forest wetting composite area through a pipeline, the forest wetting composite area is communicated with the aquaculture area through a pipeline, and the aquaculture area is communicated with the ecological hydroponic area through a pipeline. Incoming water containing bottom mud, residual feed and biological debris in the ecological hydroponic area is communicated with the ecological rice field area through a pipeline. Based on different nutrient requirements of each unit, agriculture and forestry wet compounding is taken as a core, and the opposite relationship between water, fertilizer and bait requirements of a rice field and a culture pond and tail water pollution treatment is converted into a coupled adaptive multi-element cooperative relationship.

The invention discloses a potato planting watering device, and relates to the field of irrigation, the potato planting watering device comprises a mounting fixing plate, two groups of supporting mounting seats, a rotary fixing frame, a pipeline fixing sleeve, a watering pipeline and a watering sprayer, the two groups of supporting mounting seats are fixedly mounted at the upper end of the mounting fixing plate, and the rotary fixing frame movably penetrates through the supporting mounting seats; and the two pipeline fixing sleeves are fixedly mounted at one end of the rotary fixing frame. According to the watering device for potato planting, potato seedlings are irrigated with water to the maximum extent, excessive watering is avoided, watering in the early growth stage of potatoes is more convenient, branches and leaves of the tall potatoes are watered and irrigated, the branches and leaves of the potatoes are irrigated with water to the maximum extent, and the yield of the potatoes is improved. Potato watering in different periods is facilitated, excessive water is collected, the influence caused by excessive watering of potatoes is prevented, water collected in the backflow collecting box is pumped out and used along with a conveying water source, and water reutilization is achieved.

The invention provides an image segmentation model training method and device, equipment and a storage medium, and the method comprises the steps: carrying out the merging of a foreground image, mask information and a background image, obtaining a first annotation image, generating annotation information for an original image according to a target detector and a first segmentation model, obtaining a second annotation image, generating a high-confidence first training dataset and a low-confidence second training dataset according to the first annotation image and the second annotation image, training based on the first training dataset to obtain a target teacher model, and then segmenting the second training dataset through the target teacher model to obtain a third training dataset; and finally training a student model according to the third training data set to obtain a target image segmentation model. According to the method and the device, the utilization rate of the training data is effectively improved in a low-resource scene, and high-reliability labeling information is automatically added to the image.

The invention relates to a wafer cleaning device. The wafer cleaning device comprises a first cleaning tank, a second cleaning tank, a storage tank, a first heater and a controller, an SPM solution discharged by the second cleaning tank is stored through the storage tank, and the SPM solution is replaced by the first cleaning tank under the condition that the SPM solution is replaced by the second cleaning tank. According to the SPM cleaning equipment, the storage tank is controlled by the controller to convey the SPM solution heated to the preset temperature interval through the first heater into the first cleaning tank, so that the problem that the SPM solution cannot be further saved by tank-type or tank-type and single-chip SPM cleaning equipment is solved, the SPM solution is reused, and the SPM solution is further saved.

The invention provides a laterite-nickel ore gradient continuous leaching method which comprises the following steps: laterite-nickel ore sequentially passes through a fusion leaching area, a stable leaching area and an adjustable leaching area to be continuously leached in the material conveying direction of the laterite-nickel ore; acid liquor is added into the fusion leaching area and the stability leaching area; the temperature of the fusion leaching area is T1 and the reaction time is t1, the temperature of the stable leaching area is T2 and the reaction time is t2, and the temperature of the adjustable leaching area is T3 and the reaction time is t3; wherein T < 2 > < gt >; t3 > = T1, and t2gt; t3gt; t3gt; t1. According to the method, the high-pressure acid leaching process is subjected to partition treatment, the one-time leaching efficiency is improved, scaling is slowed down, accordingly, scaling of a reaction kettle can be reduced while further leaching of Fe and Al is inhibited, acid liquor and waste residues can be fully utilized, efficient leaching of nickel, cobalt and manganese is achieved, and waste heat generated after slurry is discharged from an adjustable leaching area can be recycled.

The invention discloses multipurpose overspeed quenching oil as well as a preparation method and application thereof, and relates to the technical field of quenching oil. The multipurpose overspeed quenching oil comprises the following components in parts by weight: 85-91 parts of base oil, 5-7 parts of a cooling accelerant, 0.5-2.0 parts of an antioxidant, 3-5 parts of a dispersing agent and 0.5-2.0 parts of an emulsifying agent. According to the technical scheme, the multifunctional overspeed quenching oil adopts the emulsifying agents with the cooling promoting effect in the workpiece quenching low-temperature stage, the emulsifying agents can promote the carried-out quenching oil to be fully emulsified to form emulsified liquid in the post-cleaning stage, floating oil is avoided, and therefore smoke generated in the tempering stage can be reduced; meanwhile, the emulsified liquid formed by the emulsified quenching oil has a certain antirust effect and can be used for preparing the cutting fluid, so that the quenching oil is recycled, the problem of waste liquid discharge of enterprises can be solved, and the production cost of the enterprises is effectively reduced.

The utility model relates to the related technical field of ventilation clerestory, in particular to an environment-friendly steel structure ventilation clerestory which comprises a clerestory frame, and an environment-friendly mechanism is arranged in the clerestory frame. According to the environment-friendly steel structure ventilation clerestory, through the arrangement of the clerestory frame, the environment-friendly mechanism, the ventilation groove, the daylighting panel, the illuminating lamp, a water collecting pool, a through hole, a water pipe, a groove and a water collecting tank, firstly, light energy is converted into electric energy through a photovoltaic panel and stored in a storage battery, and when the day is dark or at night, the storage battery can provide a power source for the illuminating lamp for illumination; when it rains, rainwater falls onto the daylighting panel from the ventilation grooves, the daylighting panel is obliquely installed, the rainwater flows into the water collecting tank from the grooves along the gradient of the daylighting panel, then the rainwater in the water collecting tank flows into the water pipe from the through holes and is stored in the water collecting tank through the water pipe, and therefore the rainwater is reused.

The invention relates to the technical field of intelligent air conditioners, and discloses a control method for an energy storage air conditioner, the energy storage air conditioner comprises a water chilling unit and a battery, and the water chilling unit is used for regulating and controlling the temperature of the battery. The control method for the energy storage air conditioner comprises the steps that the battery temperature and the water outlet temperature of the water chilling unit are obtained; determining a water outlet temperature compensation value according to the water outlet temperature and / or the battery temperature; determining a target water outlet temperature according to the water outlet temperature compensation value and a preset water outlet temperature; and regulating and controlling the operation frequency of the compressor according to the outlet water temperature and the target outlet water temperature. By regulating and controlling the frequency of the compressor, the outlet water temperature is close to or even maintained at the target outlet water temperature. The temperature of the battery is regulated and controlled through water circularly flowing in the water cooling unit, so that the battery works at the optimal working temperature, the capacity of the battery is improved, the service life of the battery is prolonged, meanwhile, water energy is recycled, and the utilization efficiency of energy is improved. The invention further discloses the energy storage air conditioner.

The invention discloses a high-salt-content wastewater evaporation heat exchange system which comprises an evaporation raw water tank, a horizontal pipe heat exchanger, an evaporation salt precipitation tank, a steam compressor, a condensate water barrel, a salt centrifugal machine and a filtrate barrel. The evaporation salting-out tank is provided with a salting-out circulating pipeline for communicating inside and outside; the salting-out circulating pump is used for driving high-salinity wastewater in the salting-out circulating pipeline and raw water introduced through the raw water inlet pipeline to flow into the evaporation salting-out tank from the first passage, and driving saturated salt slurry in the evaporation salting-out tank to enter the salting-out circulating pipeline; the steam compressor is used for compressing unsaturated secondary steam which is generated by the self-evaporation salt precipitation tank and input through the first steam pipeline and then conveying saturated high-temperature and high-pressure steam to the second steam pipeline; the filtrate return pipeline is communicated with the salting-out circulating pipeline, so that the filtrate flows back into the salting-out circulating pipeline again. According to the invention, the reutilization of heat at the later stage of the process is realized, the energy utilization rate is high, the energy waste is less, and the operation cost is reduced.

The present invention discloses a system for reducing the water content of heating steam by flash evaporation, comprising a cogeneration unit, a steam supply main pipeline, a steam supply branch pipeline and a flash evaporation device; the outlet of the cogeneration unit is connected to the steam supply main pipeline, the steam supply main pipeline is provided with a branch port, the branch port is connected to the steam supply branch pipeline inlet, the steam supply branch pipeline outlet is connected to the steam inlet of the flash evaporation device, and the steam outlet of the flash evaporation device is connected to the user. By passing high-pressure saturated steam with water into the flash evaporation device, flash evaporation is performed to supply steam with a lower pressure that meets the pressure requirements of the user, thereby reducing the water content of the steam, increasing the steam heat supply, and achieving energy saving and consumption reduction.

The invention provides a self-inflating communication buoy. The self-inflating communication buoy comprises an upper-section shell, a buoyancy section, a middle-section shell and an inflating equipment section, the upper section shell, the buoyancy section, the middle section shell and the inflation equipment section are fixedly connected in sequence from top to bottom; the upper section shell carries communication equipment, the buoyancy section carries an air bag, and a watertight connector is arranged in the middle section shell and used for data transmission and communication between the communication equipment and underwater equipment; automatic inflation equipment is arranged in the inflation equipment section, and when the buoy does not enter water, the air bag is in a contraction state; when the buoy enters water, the automatic inflation device is started to inflate the air bag, and therefore buoyancy is provided for the buoy. When not entering water, the buoy is small in size, the buoyancy is rapidly increased after the buoy enters water, and the buoy can float on the water surface for communication.

The utility model belongs to the technical field of engine tail gas treatment, and discloses an engine laboratory waste heat warm air system which is characterized in that a heating pipeline is arranged in a high-temperature waste gas exhaust pipe of an engine laboratory, water circulates in the heating pipeline, a radiator is arranged in the engine laboratory, and a water inlet of the radiator is communicated with a water outlet of the heating pipeline; a water outlet of the radiator is communicated with a water inlet of the heating pipeline; the driving piece is arranged between the heating pipeline and the radiator; high-temperature waste gas exchanges heat with the heating pipeline in the process of being exhausted through the high-temperature waste gas exhaust pipe, the heating pipeline recycles heat of the high-temperature waste gas through water flowing in the heating pipeline, hot water flows into the radiator through the heating pipeline, the heat is released into the engine laboratory through the radiator, and the purpose of heating is achieved. The heated hot water is driven by the driving piece to return to the heating pipeline, water circulation is achieved, the heating problem of the engine laboratory in winter is solved, energy reutilization is achieved, and resource waste is avoided.

The invention provides low-carbon cement-based microbial concrete. The low-carbon cement-based microbial concrete is prepared from the following components in parts by mass: 280 parts of super sulfate cement, 70 parts of II-grade fly ash, 166.4 parts of a microbial solution, 752 parts of sand, 1145 parts of stone, 2.1 parts of a water reducing agent, 0.158 part of an air entraining agent, 4.2 parts of calcium lactate and 1.16 parts of urea. The raw materials of the super sulfate cement are slag, ardealite and the like, the cost is low, industrial by-products can be recycled, the preparation process is simple, the CO2 emission in the preparation process is remarkably reduced compared with that of traditional Portland cement, and the cost is low. After the microorganisms are added, the defect of low early strength of the super sulfate cement concrete can be obviously improved, and the super sulfate cement concrete meets the requirements of actual engineering and is popularized and applied.

The present invention relates to a contact heat pump dryer, comprising a drying bin, a heat exchanger is arranged in the drying bin, a material feed port is arranged on the end surface of the drying bin, a material discharge port is arranged on the bottom surface of the drying bin, an air inlet duct and an air exhaust duct are arranged on the side walls of the drying bin respectively, the drying bin is rotatably arranged on a support frame, the drying bin is rotated on the support frame by a first driving device, a compressor, a filter, an electronic expansion valve, an evaporator and a compressor are arranged outside the drying bin; the drying bin rotates around the heat exchanger along an axis; electric valves are arranged between the material feed port and the drying bin, between the material discharge port and the drying bin, and in the air inlet duct; a temperature and humidity sensor is arranged in the drying bin, a controller is arranged on the outer wall of the drying bin, and the controller is electrically connected to the temperature and humidity sensor, the electric valve, the first suction fan and the first driving device respectively. The present invention has the advantages of strong practicability and simple structure.

The invention relates to the technical field of VOCs waste gas treatment, and discloses VOCs waste gas catalytic combustion treatment equipment with a built-in heat exchange structure, the VOCs waste gas catalytic combustion treatment equipment comprises a catalytic combustion unit and a plurality of adsorption units, activated carbon adsorption assemblies are arranged in the adsorption units and used for adsorbing organic compounds in waste gas, and in the same time period, the activated carbon adsorption assemblies are used for adsorbing the organic compounds in the waste gas. One part of the adsorption units are used for absorbing organic compounds in gas discharged from the filtering device, the other part of the adsorption units are standby, when absorption is saturated, desorption steam enters the saturated adsorption units for desorption after being heated by the catalytic combustion unit, and the standby adsorption units replace the desorption steam to participate in absorption of the organic compounds. Through the arrangement of the back flushing tank, gas in the back flushing tank is heated by utilizing heat of steam, so that air in the back flushing tank is heated to expand, and high-pressure airflow is generated to reversely purge the filter, on one hand, the effect of cleaning the filter is achieved, and on the other hand, heat generated by catalytic combustion is further effectively utilized.

The utility model discloses a biogas dehydration device which comprises a bottom plate, the top of the bottom plate is fixedly connected with a third supporting block, the top of the third supporting block is fixedly connected with a biogas residue box, a ventilation net is arranged on the surface of the biogas residue box, the top of the biogas residue box is fixedly connected with a supporting frame, and the top of the supporting frame is fixedly connected with a base. The top of the base is fixedly connected with a material pumping motor, the top of the biogas residue box is fixedly connected with a discharge pipe, the surface of the biogas residue box is fixedly connected with a drying device, the front face of the drying device is fixedly connected with a protective frame, the interior of the protective frame is fixedly connected with a small motor, and the back of the small motor is connected with a drying fan through a rotating shaft. According to the biogas dehydration device, the drying device is fixedly connected to the surface of the biogas residue box, biogas residues are discharged into the biogas residue box through the material pumping motor and the discharging pipe, the dehydrated biogas residues are dried, the biogas residues are conveniently recycled, the repeated utilization rate is good, and reutilization is achieved.

The invention provides a thermal protection system and method for improving the spreadability of a sweating gas film on the outer surface of an aircraft. The thermal protection system comprises an upstream sweating area, a middle suction area, a downstream sweating area and a measurement control unit. The upstream sweating area is located at the front edge of a nose cone or a rudder wing of the aircraft, and the middle suction area and the downstream sweating area are communicated through a pipeline and are sequentially arranged on the surface of the aircraft at the downstream of the upstream sweating area in the flying airflow direction; the measurement control unit is used for measuring the heat flow of the sweating area and regulating and controlling the primary sweating of the upstream sweating area, the suction of the middle suction area and the secondary sweating of the downstream sweating area by controlling the states of the electronic pressure stabilizing valve, the electronic stop valve and the micro piezoelectric pump; the suction area is arranged at the sweating downstream, so that the spreadability of a sweating gas film is improved; and a re-sweating area is arranged at the downstream of the suction area, and the suction area and the re-sweating area are linked through a piezoelectric pump, so that recycling of cooling gas is realized.

The utility model discloses a mill protection device with material splashproof baffle, including device main part, the top of device main part is along longitudinal respectively fixedly connected with first servo motor and second servo motor, the top of device main part is along horizontal distribution fixedly connected with first mounting plate and second mounting plate, and first mounting plate and second mounting plate are respectively connected with first roller and second roller through bearing rotation between first mounting plate and second mounting plate, first roller is fixedly connected with the output of second servo motor, and the output of second roller is fixedly connected with the output of first servo motor, and the top of first mounting plate and second mounting plate is fixedly connected with splashproof baffle symmetrically, and the outer wall of splashproof baffle is fixedly connected with a plurality of reinforcing ribs, the utility model discloses a splashproof baffle is set up, and splashproof baffle can in the process of mill use, and some in the process of use splashing material is blocked, and the health of operator is protected, and there is certain practicality.

The utility model belongs to the technical field of dust recovery, and particularly relates to a dust recovery system of a urea prilling tower. Comprising a liquid absorption device arranged at an air outlet in the top of a urea prilling tower, a collecting tank is arranged below the liquid absorption device, a circulating tank is arranged below the collecting tank, the collecting tank is communicated with the circulating tank through a circulating downcomer, and the circulating tank is communicated with the liquid absorption device through a circulating pump. The liquid absorbing device comprises a first atomizing nozzle layer, a second atomizing nozzle layer and a flushing nozzle layer which are sequentially arranged from bottom to top; a first-stage separator is arranged between the first atomizing nozzle layer and the second atomizing nozzle layer, a second-stage separator is arranged between the second atomizing nozzle layer and the flushing nozzle layer, a third-stage separator is arranged above the flushing nozzle layer, and the third-stage separator comprises a plurality of air coolers. According to the utility model, the content of urea dust discharged into the atmosphere is reduced, and the environment-friendly requirement is met.

The invention relates to the technical field of highway bridge engineering construction, in particular to a hollow slab girder internal mold for a highway bridge, which comprises a support assembly and a support pipe, the number of the supporting assemblies is multiple, the multiple supporting assemblies are arranged along a straight line, the corresponding ends of every two adjacent supporting assemblies in the multiple supporting assemblies are fixedly connected, the multiple supporting pipes are arranged in an annular array with the transverse axis of the multiple supporting assemblies as the axis, and every two adjacent supporting pipes are arranged in an attached mode. The hollow slab beam internal mold for the highway bridge has the advantages of being rapid to install, convenient to detach, high in material utilization rate and the like, and the construction efficiency and quality of highway bridge construction can be improved easily.

The invention provides a coal-fired power plant flue gas liquefaction energy storage and carbon dioxide capture system and a use method thereof.The system comprises a low-temperature water washing module used for cooling flue gas and recovering moisture and pollutants in the flue gas; the flue gas compression module compresses the flue gas and cools the flue gas through the interstage heat exchanger; the carbon dioxide separation module is used for separating liquid carbon dioxide from high-pressure flue gas; the energy storage module is used for cooling, expanding and liquefying the high-pressure flue gas and storing the high-pressure flue gas in a liquid flue gas storage tank; the energy release module separates the liquid flue gas into gaseous oxygen and liquid nitrogen, the oxygen is supplied to the boiler for combustion, and the nitrogen generates power through the expansion machine. According to the invention, water in flue gas is recovered by cleaning the flue gas with cold water; carbon dioxide in flue gas is captured by compressing the tail gas of the coal-fired power plant and cooling, and energy is stored by high-pressure flue gas from which carbon dioxide is removed through pressurization; the high-pressure flue gas is liquefied by cooling and expanding the high-pressure flue gas and is stored in a liquid storage tank; liquefied flue gas vaporization pushes the expansion machine to generate electricity and output electric energy, and the energy utilization rate is high.

The utility model relates to the field of bearing cleaning devices, and discloses a cleaning device for inner and outer rings of a bearing, which comprises a workbench, the top of the workbench is in sliding connection with an adjusting frame, the front side of the adjusting frame is fixedly connected with a rail rod, and the outer wall of the rail rod is in sliding connection with a plurality of cleaning device bodies. A water tank is fixedly connected to the rear side of the adjusting frame, telescopic hoses are arranged on the two sides of the water tank, a storage box is fixedly connected to the bottom of the inner wall of the adjusting frame, a stacking bin is fixedly connected to the front side of the storage box, a motor is fixedly connected to the rear side of the storage box, and a transmission rod is fixedly connected to the output end of the motor. And the outer wall of the transmission rod is fixedly connected with a cam. According to the cleaning device, the telescopic hose, the motor, the transmission rod, the cam and other components are used in cooperation, cleaning liquid with high cost can be effectively reused in the inclination process, sludge outside a washed lower bearing can be effectively classified, and the cleaning efficiency is improved.

The utility model relates to the field of numerical control lathe auxiliary mechanisms, in particular to a numerical control lathe cooling structure which comprises a liquid supply box arranged on the outer side of a machine body, the liquid supply box is communicated with a liquid supply pump, the liquid supply pump is provided with a liquid supply pipe, one end of the liquid supply pipe is communicated with the liquid supply pump, the other end of the liquid supply pipe is communicated with an output spray head, and the output spray head is fixed on the machine body. A base is arranged at the bottom end of the waste frame. A vibration motor is fixedly connected to the outer side of the waste frame. The bottom of the waste frame communicates with a conveying pipe, the end, away from the waste frame, of the conveying pipe penetrates through the machine body and then is connected into the liquid supply box, the horizontal height of the end, connected with the waste frame, of the conveying pipe is larger than that of the end, communicated with the liquid supply box, of the conveying pipe, and a filter screen is connected into the waste frame. And the cooling liquid can be applied to the next cooling liquid supply process, so that the cooling liquid is reused, the reutilization of resources is improved, and the environmental protection property of the equipment is improved.

The present invention relates to a method and device for removing dioxins from metal smelting tail gas by using electrolytic manganese slag, which belongs to the technical field of metallurgical environmental protection and solves the problems of substandard dioxin emission during electric furnace steelmaking production and low utilization rate of electrolytic manganese slag in the prior art. The method for removing dioxins from metal smelting tail gas by using electrolytic manganese slag is to spray the electrolytic manganese slag into the flue of metal smelting tail gas, and the electrolytic manganese slag catalytically degrades dioxins, wherein the injection amount of the electrolytic manganese slag is 150-200kg / min; wherein the tail gas volume of the metal smelting tail gas is 7000-10000m 3 / h. After degradation, the dioxin toxicity equivalent concentration in the flue gas is less than 0.1ng-TEQ / m 3 , dust concentration <15mg / m 3 , which is lower than the national emission standards.

The utility model relates to the technical field of food processing, and provides a sesame stir-frying device which comprises a drying oven, a stir-frying pan, a heat exchange assembly and an induced draft fan, the heat exchange assembly comprises a smoke pipe and an air pipe, the air pipe and the smoke pipe can exchange heat, one end of the smoke pipe faces the wok, an air outlet of the air pipe is communicated with the interior of the drying oven, and the induced draft fan is installed at the air outlet of the drying oven. According to the utility model, the recycling of energy is realized, the energy consumed in the sesame stir-frying process is saved, the sesame stir-frying cost is reduced, and the energy consumption is also reduced.

The utility model relates to the technical field of solid waste treatment, and particularly discloses a gasification melting system which comprises a melting furnace, a gasification furnace and a tail gas treatment mechanism. The melting furnace is communicated with the bottom of the gasification furnace through a first air pipe; the top of the gasification furnace is communicated with the melting furnace through a second air pipe; the melting furnace is communicated with the tail gas treatment mechanism through a third air pipe; and a pressure regulating air valve is arranged on the third air pipe. According to the scheme, gas generated after solid-liquid waste is combusted in the melting furnace can be exhausted into the gasification furnace to be combusted again; hot air flow generated by combustion in the gasification furnace can return to the melting furnace, so that the heat of the hot air flow is recycled, the energy utilization rate is increased, the resource utilization cost is reduced, and combustion tail gas is discharged through the tail gas treatment mechanism after sufficient combustion.

The seat assembly comprises an abutting structure and a draught fan, an air inlet of the draught fan is communicated with a first ventilation opening, an air outlet of the draught fan is communicated with a second ventilation opening, and the draught fan is used for sucking airflow, facing the side where a passenger is located, of the abutting structure through the first ventilation opening. And air flow is blown out towards the side, facing the passenger, of the abutting structure through the second ventilation opening. The cooling effect of the seat assembly can be improved.

The invention relates to the technical field of magnesia carbon bricks, and particularly discloses a low-carbon magnesia carbon brick and a preparation method thereof. The low-carbon magnesia carbon brick is prepared from the following raw materials in parts by mass: 65-75 parts of fused magnesia, 20-24 parts of waste magnesia carbon sand, 3-5 parts of graphite and 5-7 parts of a phenolic resin adhesive. Crushing the used magnesia carbon brick to obtain crude sand A, crude sand B and crude sand C with different particle size distributions, treating the crude sand to respectively prepare first-particle-size magnesia carbon sand, second-particle-size magnesia carbon sand and third-particle-size magnesia carbon sand, and mixing all the particle sizes of magnesia carbon sand to obtain waste magnesia carbon sand; the preparation method comprises the following steps: stirring and mixing fused magnesia, waste magnesia carbon sand, graphite and a phenolic resin adhesive, then transferring into a mold, carrying out pressurized compression molding, carrying out baking gun heat treatment, and baking to obtain the low-carbon magnesia carbon brick. The low-carbon magnesia carbon brick prepared from the waste magnesia carbon sand has low apparent porosity, the carbon introduction amount can be reduced, and reutilization of the used magnesia carbon brick is achieved.

The utility model discloses a floating type sponge city water storage landscape belt which comprises a water storage landscape belt body used for collecting rainwater, a water storage area used for storing the rainwater is arranged in the water storage landscape belt body, a landscape area is arranged above the water storage area, a landscape disc used for planting green plants is arranged in the landscape area, and the landscape disc is arranged above the water storage area. A viewing aisle for pedestrians to view and walk is arranged on the outer side of the landscape area, a space area below the viewing aisle is communicated with the water storage area through a communication port, and a protection plate is arranged at the top of the water purification area. According to the floating-type sponge urban water storage landscape belt, the water storage area capable of collecting rainwater is arranged below the landscape disc, rainwater can be collected, waterlogging in a city can be relieved, meanwhile, greening of the urban area can be achieved, and the floating-type sponge urban water storage landscape belt can be used in a limited space area of an old urban area. The purpose of combining greening and waterlogging prevention is achieved, and the sponge city structure is built.

The high-security horizontal explosion-proof tank door body and horizontal explosion-proof tank described in the present invention have a door panel that is a multi-section flat plate structure including a plurality of left-leaning plates and right-leaning plates. Whether it is a vertical plate or an annular plate, when the explosive in the explosion-proof tank explodes, the high-pressure gas will generate an explosion impact force on the explosion-proof tank door body. The explosion impact force on the explosion-proof tank door body acts on the left-leaning plate and the right-leaning plate respectively, and will generate horizontal components or radial components in opposite directions along the horizontal direction or radial direction. The horizontal components or radial components generated by the left-leaning plate and the right-leaning plate can balance each other, and can even generate horizontal components or radial components that keep the two door leaves closed at all times during the explosion impact, further improving the explosion-proof tank's ability to withstand shock waves from a structural perspective, thereby improving the safety of the door body.