103results about How to "Promote resource utilization" patented technology

The invention discloses a method for degrading dioxin in fly ash and stabilizing heavy metals, which comprises the following steps: carrying out water washing treatment on the fly ash, and carrying out solid-liquid separation to obtain water washing slag; mixing the washed slag with water, adding zero-valent iron and sulfite, carrying out hydrothermal treatment, and carrying out solid-liquid separation to obtain hydrothermal slag and hydrothermal liquid; according to the method for degradation of dioxin in fly ash and stabilization of heavy metal in cooperation with degradation of dioxin in fly ash, under the combined action of zero-valent iron, chlorite and a hydrothermal environment, efficient degradation of dioxin in fly ash can be rapidly achieved under the lower reaction condition, stabilization of heavy metal in fly ash can be synchronously achieved, and the method is suitable for industrial production. The method has the advantages of being low in cost, mild in reaction condition, high in treatment efficiency, good in treatment effect, environmentally friendly and the like, can effectively solve the problems existing in the prior art, provides powerful support for harmless treatment and resource utilization of the waste incineration fly ash, and has wide engineering application prospects.

The invention provides a coalescence-selective filtration-deep bed filtration efficient oil-water separation system which comprises a coalescence system, a selective filtration system and a deep bed filtration system, oily wastewater enters a coalescer, and tiny oil droplets are coalesced into larger oil droplets through wetting coalescence and collision coalescence; the coalesced wastewater enters a selective filter, oil droplets and water respectively flow out through an oil channel and a water channel, and primary separation is realized; according to the present invention, the water after the primary separation enters the deep bed filter to achieve the deep separation, the efficient oil-water separation and the water quality standard discharge or reuse are achieved through the combination process of coalescence, selective filtration and deep bed filtration, and the system has advantages of high treatment efficiency, low energy consumption, less carbon emission, oil and water recycling, or water standard discharge.

The invention discloses a medical science popularization question and answer model fine tuning method, device, equipment, medium and product, and relates to the field of large language model fine tuning, the method comprises the following steps: cleaning data in a medical text question and answer data set, determining a cleaned instruction-input-output normal form data set, and using the data set as a fine tuning training data set; in a pre-trained large language model, positioning a QKV projection matrix in a multi-head self-attention mechanism and a weight matrix in a feedforward neural network; two low-rank matrixes are introduced into each matrix, the pre-trained large language model is finely tuned, and the finely tuned large language model is determined; the fine-tuned large language model is used for generating an answer according to question data in the process of using interaction between the user and the fine-tuned large language model, the large language model is finely tuned, the performance of processing a specific task is improved, the calculation cost is reduced, the grasp ability of the model for specific details is enhanced, and the user experience is improved. And the requirements of specific user groups or application scenes are met.

The invention discloses a method for synergistically hydro-thermally treating sludge based on tea residue and organic acid, which comprises the following steps: mixing sludge with organic acid and tea residue, and performing hydro-thermal treatment and dehydration treatment on the obtained mixed slurry to obtain filtrate and a mud cake. According to the method for carrying out the synergistic hydrothermal treatment on the sludge based on the tea residues and the organic acid, the hydrothermal reaction temperature can be remarkably reduced under the synergistic effect of the tea residues and the organic acid, meanwhile, the sludge is subjected to the synergistic hydrothermal treatment through the organic acid and the tea residues, the dehydration performance of the sludge can be effectively improved, and meanwhile generation of nondegradable organic matter such as melanoidins can be effectively inhibited; therefore, efficient, environment-friendly, recycling and low-cost treatment of the sludge can be realized by fully utilizing the characteristics of the organic acid and the tea residues and cooperating with a hydrothermal treatment technology, and the method has the advantages of low reaction temperature, high treatment efficiency, low energy consumption, good dehydration effect, greenness, environmental protection and the like; wide application prospects and popularization values are realized.

The invention discloses a slag permeability coefficient depth distribution prediction method considering a particle crushing effect, and belongs to the technical field of rock-soil body performance prediction. According to the invention, a dynamic triaxial test is carried out on a slag sample, and the dynamic evolution law of grain composition and breakage rate of slag at different depth sites after different vibration times of loading is explored. Meanwhile, a seepage test is carried out on the slag subjected to cyclic loading and crushing through a seepage erosion simulation test device, the critical hydraulic gradient of migration and structural damage of fine particles in the slag of different grades under the seepage erosion effect is explored, the degradation and damage mechanism of the slag is revealed, and a negative index continuous grade formula is used as a hub; according to the method, a prediction model of the particle crushing index and the permeability coefficient is constructed, and the internal mechanism of the particle crushing behavior and the permeability characteristic evolution of the slag roadbed under the cyclic load effect is disclosed, so that the predicted permeability coefficient is closer to the actual permeability coefficient, and the prediction precision is improved.

The invention relates to the technical field of preparation of phase-change materials, in particular to a steel slag-based porous ceramic composite phase-change material and a preparation method thereof.According to the preparation process, a sacrificial template method and a foaming agent pore-forming method are combined, waste polyurethane foam and waste wood pulp sponge are used as templates, industrial solid wastes (steel slag, fly ash and rice hull ash) are used as raw materials, and the steel slag-based porous ceramic composite phase-change material is prepared. The steel slag-based porous ceramic is prepared. The steel slag-based porous ceramic composite phase change material is prepared by using the prepared steel slag-based porous ceramic as a carrier vacuum adsorption phase change material. According to the invention, resource utilization of wastes is promoted, and environmental pollution caused by industrial solid wastes, biomass wastes and plastic wastes is reduced. The steel slag-based porous ceramic with abundant pore structures and the steel slag-based porous ceramic composite phase change material with good thermal performance and thermal cycle performance are prepared by adjusting the proportion of the raw materials, the porosity of the porous template and the impregnation vacuum degree. The preparation method is simple and suitable for large-scale production.

The invention provides a saline-alkali soil drilling and straw vertical burying integrated device and a vertical hole permeation enhancing improvement method, and belongs to the technical field of soil drilling and saline-alkali soil improvement. The saline-alkali soil drilling and straw vertical burying integrated equipment comprises a rack, the rack is sequentially provided with at least one set of drilling mechanism, feeding mechanism and soil covering mechanism from front to back, and the rack is connected with power equipment; the saline-alkali soil vertical hole permeation enhancement improvement method comprises the following steps that S1, straw bundles are manufactured; s2, flattening the land parcels; s3, drilling holes in the salinized soil to form vertical holes; s4, the straw bundles are placed in the vertical holes; s5, earthing and burying; s6, leaching the salinized soil, and accelerating vertical water and salt drainage by straw bundles; s7, after the straw bundles are buried for several years, the positions are changed, holes are drilled again, and new straw bundles are buried again; integrated automation of punching, feeding and soil covering can be achieved, and the straw vertical burying efficiency is improved; by adopting the vertical efficient permeation-increasing improvement method, the clay sandwich structure salinized soil can be efficiently, ecologically and continuously improved.

The invention provides a microbial fertilizer and a soil beneficial bacterium awakening method thereof. The microbial fertilizer comprises a hermetia illucens insect fertilizer, phosphate solubilizing bacteria, potassium solubilizing bacteria and nitrogen-fixing bacteria, the microbial fertilizer inoculant takes the hermetia illucens insect fertilizer as a basis and is supplemented with the phosphate solubilizing bacteria, the potassium solubilizing bacteria and the nitrogen-fixing bacteria; the phosphate solubilizing bacteria play a positive role in enhancing the phosphorus supply capability of the hermetia illucens insect fertilizer; the potassium bacteria play an important role in improving the potassium supply capability of the hermetia illucens insect fertilizer; the nitrogen-fixing bacteria have important significance for improving the nitrogen supply capability of the hermetia illucens insect fertilizer; the microbial fertilizer fungicide is guided to be used by a synergistic soil beneficial bacterium awakening method. The method comprises the following steps: detecting and knowing the basic conditions of the pH value, the organic matter content, the nutrient condition and the microbial community structure of soil in advance, and pretreating the soil to enable the soil to meet the conditions beneficial to microbial activity and plant root growth; a microbial fertilizer is applied according to the crop demand soil condition, a microbial agent is added to make full contact with the soil, and soil irrigation moisture preservation, monitoring and adjustment are kept.

The invention discloses a coal-series solid waste ceramsite-based water surface crop planting device and method for a coal mining subsidence water area, and the device comprises a plurality of ceramsite floating beds which are formed by connecting a plurality of ceramsite floating plate units through connecting pieces and are fixed through vertical fixing piles which are arranged at intervals; planting holes used for containing planting pots are formed in the inner areas of the ceramsite floating plate units, substrate layers composed of soil and ceramsite of different particle sizes are arranged in the planting pots, and appropriate aquatic economic crops are planted in the substrate layers. According to the coal-series solid waste ceramsite-based water surface crop planting device and method for the coal mining subsidence water area, a new solution is provided for solving the ecological environment and agricultural production problems of the coal mining subsidence water area through comprehensive utilization of waste resources and an ecological restoration technology.

The invention relates to the technical field of hydrometallurgy, in particular to a method for reducing the content of sulfuric acid in low-copper raffinate and recovering copper, which comprises the following steps: S1, pre-neutralizing; step S2, dense separation; s3, extracting to remove copper; and S4, neutralizing and removing iron. According to the method, high-acid-consumption waste materials generated in production activities of enterprises are used for reacting with sulfuric acid in the low-copper raffinate in advance, then the pre-neutralized low-copper raffinate is firstly extracted to recover copper, and then the raffinate is subjected to neutralization iron removal and cobalt precipitation production; the purposes of reducing consumption of alkaline auxiliary materials and production cost of a cobalt production system, improving the quality of cobalt salt, fully recycling copper in the low-copper raffinate, increasing the yield of cathode copper products and recycling waste materials are achieved, and the method has the advantages of being high in comprehensive utilization degree of resources, remarkable in economic benefit, simple in process and high in operability.

The invention discloses an efficient pretreatment system and method for kitchen waste, and the pretreatment system comprises a material receiving and conveying unit, a first-stage hydraulic pulping and sorting unit, a second-stage hydraulic pulping and sorting unit, a solid-liquid separation unit, a desanding unit, an oil-water separation unit and an impurity conveying unit. According to the system, kitchen waste can be efficiently crushed into fine slurry through the two-stage hydraulic pulping and sorting unit, the pulping effect and the impurity removal rate are improved, organic matter loss is reduced, the fine slurry is subjected to deslagging and refining through the solid-liquid separation unit and the sand removal unit in sequence, follow-up equipment blockage or damage can be avoided, the operation safety of the system is improved, and the service life of the system is prolonged. According to the system, solid-liquid separation and oil-water separation of the kitchen waste can be effectively realized, so that convenience is provided for subsequent resource utilization, and the resource utilization efficiency is improved; when the system is applied to kitchen waste treatment, the pulping effect can be improved, follow-up treatment is facilitated, the follow-up treatment process is simplified, and the kitchen waste treatment speed and efficiency are improved.

The invention belongs to the technical field of sandy soil modifying agents, and particularly relates to a sandy soil modifying agent and a sandy soil modifying method. The sandy soil improver comprises a functional bacterium suspension and a cementing liquid, the functional bacteria in the functional bacteria turbid liquid can perform biomimetic mineralization on calcium salt in the cementing liquid to generate inorganic cement calcium carbonate (the crystal form is calcite and / or vaterite), and the inorganic cement is a cementing component widely distributed in natural soil and can maintain high cementing strength and a stable structure of the sandy soil, so that the sand stabilization effect is realized. Secondly, the formed inorganic cement is consolidated on the surface layer of the sandy soil in the form of a crust layer, the main component of the crust layer is calcium carbonate, and the calcium carbonate is white or yellowish white and light in color and can significantly reduce the solar radiation effect, so that the earth surface soil temperature rise speed of the sandy soil is slowed down, the water evaporation is slowed down, the water retention is enhanced, and the drying and hardening of the surface crust layer are slowed down; and germination and growth of plant seeds are facilitated.

The invention relates to the technical field of solid waste treatment, and provides a closed-loop dechlorination and desalination method for incineration fly ash. Soluble and insoluble chlorine salts in the incineration fly ash are removed through alkali washing, and then heavy metals and chlorine salts in alkali washing waste liquid are removed through heavy metal removal, primary dechlorination and secondary dechlorination. The Ca-Al layered double hydroxides obtained in the process can be circularly used for removing heavy metals, and the recovered alkali solution can be circularly used for alkali washing. According to the method, the removal efficiency of chlorine salts, especially insoluble chlorine salts, in the incineration fly ash is remarkably improved, meanwhile, removal of sulfate is promoted, calcium in the fly ash is reserved, and resource utilization is facilitated. And meanwhile, secondary environmental pollution caused by wastewater is effectively prevented. The byproduct Ca-Al layered bimetal hydroxide has a wide application prospect in the fields of gas adsorption, wastewater purification, catalysis and the like due to unique interlayer ion exchange property and excellent adsorption capacity, and has a good economic value.

The invention discloses a method for restoring arsenic and halogenated hydrocarbon combined contaminated soil through oxidation enhanced leaching and a leaching agent. The leaching agent is composed of a first-stage leaching solution and a second-stage leaching solution. The first-stage leacheate eluting agent is composed of persulfate and strong base; the second-stage leacheate eluting agent is composed of organic acid and alcohol. According to the method, a two-stage leaching mode is adopted for the arsenic and halogenated hydrocarbon combined contaminated soil, synchronous removal of arsenic and halogenated hydrocarbon in the contaminated soil can be achieved through the oxidation strengthening synergistic interaction effect of the leaching agent, the toxicity of arsenic can be reduced, potential safety hazards in the subsequent waste liquid treatment process can be reduced, and the method is mild in condition and easy to implement. The method has the advantages of high removal rate, low cost and the like.

The invention discloses a spatial multilayer ultrahigh-pressure box-type dehydration system and a dehydration method. The system comprises a main rack, a material distributing and feeding device, a material distributing / discharging device, filter cloth, a filter pressing chamber, a filter chamber moving device, a filter chamber lifting hydraulic machine, a filter pressing hydraulic machine, a hydraulic station and a controller, the material distributing and feeding device, the material distributing / discharging device, the filter chamber moving device, the filter chamber lifting hydraulic machine and the filter pressing hydraulic machine are connected to the main machine frame, the material distributing and feeding device is installed on the material distributing / discharging device, the material distributing / discharging device is installed on the filter pressing chamber, the filter cloth is wound on the material distributing / discharging device, the filter pressing chamber is installed on the filter chamber moving device, and the filter pressing hydraulic machine is installed on the filter chamber lifting hydraulic machine. The filter chamber lifting hydraulic machine is installed below the material distributing / discharging device and the filter chamber moving device, the filter chamber moving device, the filter chamber lifting hydraulic machine and the filter pressing hydraulic machine are connected with the hydraulic station, and the material distributing and feeding device, the material distributing / discharging device, the filter chamber moving device, the filter chamber lifting hydraulic machine, the filter pressing hydraulic machine and the hydraulic station are electrically connected with the controller.

The invention belongs to the technical field of building engineering, and particularly relates to a building solid waste resource comprehensive utilization device which comprises a crushing box, a first-stage crushing mechanism and a second-stage crushing mechanism, the first-stage crushing mechanism comprises two oppositely-arranged first extrusion plates, and the opposite sides of the two first extrusion plates are each provided with a second extrusion plate; an extrusion gap is formed between each first extrusion plate and the corresponding second extrusion plate, a plurality of reset assemblies are arranged between each second extrusion plate and the sliding inner side wall of the crushing box, and thrust assemblies are arranged in cooperation with the reset assemblies and used for achieving synchronous linear reciprocating motion of the two second extrusion plates; the second-stage crushing mechanism is arranged on the lower sides of the two second extrusion plates and used for conducting secondary crushing treatment on the building solid waste from the first-stage crushing mechanism. According to the device, uniform crushing treatment can be conducted on concrete blocks of different sizes, the crushing efficiency is improved while the crushing effect is improved, and better practicability is achieved.

The invention discloses a preparation method of a heat-insulation reinforcing material for mine roadway guniting support. The preparation method comprises the following steps: crushing cotton straws, sieving, and drying until the mass is constant; the preparation method comprises the following steps: preparing an alkali activator solution formed by mixing NaOH and Na2SiO3; mixing and stirring slag powder and fly ash to obtain a slag-ash mixture; then carrying out solid-liquid mixing on the slag-ash mixture and an alkali activator solution, and adding 2-5% of quartz sand; after stirring, sequentially adding 20 to 28 percent of cotton straw, 0.35 to 0.45 percent of aluminum powder foaming agent and a proper amount of foam stabilizer; the water-cement ratio of the thermal insulation reinforcing material is (0.4-0.6): 1. The thermal insulation reinforcing material is used for shotcrete support of the mine laneway. According to the invention, light materials such as cotton straws are added, so that the guniting support material has better heat preservation and heat insulation effects. The cotton straw can also effectively prevent the expansion of internal cracks, and can better improve the strength and toughness of the material.

The invention relates to a preparation method of recycled aggregate pervious concrete, which comprises the following steps: sequentially crushing and screening waste concrete to obtain waste stone powder with the particle size of less than 0.075 mm and coarse aggregate with the particle size of 5-30 mm; the method comprises the following steps: washing and drying waste stone powder, adding glass powder and sodium hydroxide, and reacting to obtain a sodium silicate alkali activator; the preparation method comprises the following steps: firstly, adding coarse aggregate into a magnesium alginate aqueous solution, soaking until the coarse aggregate absorbs water to be saturated, sequentially adding sodium polyacrylate, mango butter and hydrogenated polyisobutene during soaking, stirring and mixing, then introducing carbon dioxide gas for carbonization, and carrying out post-treatment after carbonization is finished, so as to obtain recycled aggregate; and mixing the cement, the slag powder, the alkali activator, the machine-made sand, the recycled aggregate, the polycarboxylate superplasticizer and water to obtain the pervious concrete. The invention provides a preparation method for completely replacing natural coarse aggregate of the pervious concrete with the recycled aggregate, and the slag powder is used for replacing cement in a large proportion to serve as a cementing material, so that the high-strength and high-permeability all-waste aggregate green pervious concrete material can be prepared.

This utility model proposes a wastewater purification device for highway service areas, relating to the field of wastewater purification technology. The wastewater purification device includes: a toilet wastewater treatment structure, comprising a toilet wastewater equalization tank, an A / O biological treatment tank, and a filtration and disinfection unit; a catering wastewater treatment structure, comprising a catering wastewater equalization tank, an air flotation oil removal unit, and an grease recovery unit, wherein the air flotation oil removal unit is connected to the catering wastewater equalization tank, the grease recovery unit is connected to the air flotation oil removal unit, and the wastewater outlet of the air flotation oil removal unit is connected to the A / O biological treatment tank; and a car wash wastewater treatment structure, comprising a car wash wastewater equalization tank, a magnetic coagulation sedimentation unit, a membrane distillation unit, and a sludge treatment unit, wherein the inlet of the magnetic coagulation sedimentation unit is connected to the car wash wastewater equalization tank, and the magnetic coagulation sedimentation unit is simultaneously connected to the membrane distillation unit and the sludge treatment unit. This application achieves classified treatment, and the targeted process solves problems such as pollutant interference, equipment wear and tear, and overload during mixed treatment.

The invention discloses a rice-wheat rotation area liquid manure efficient returning planting method, which comprises the following steps: step 1, precisely metering and applying liquid manure subjected to innocent treatment, step 2, precisely applying the liquid manure by stages according to the fertilizer requirement rules of rice and wheat in different growth periods, and step 3, performing returning operation by combining injection type deep application and movable sprinkling irrigation equipment. 4, carrying out matched management after the liquid manure is applied; 5, carrying out a dynamic management closed loop of measurement, calculation, determination, application, monitoring and regulation; through system implementation and dynamic closed-loop management of three precise dimensions of opportunity, method and proportioning, ammonia volatilization and nitrogen and phosphorus runoff loss are greatly reduced, agricultural non-point source pollution is effectively controlled, soil organic matter is stably increased, chemical fertilizer investment can be remarkably reduced through precise replacement, the production cost is reduced, and the economic benefit is increased. Meanwhile, fertilizer utilization rate is increased, annual yield of rice and wheat is increased, and income is increased.

The agricultural mechanical weeding machine relates to the technical field of agricultural machinery and comprises a machine body, two rear wheels are rotatably connected to the rear portions of the front side and the rear side of the machine body, a front wheel set is fixedly connected to the left portion of the bottom of the machine body, and a cutting mechanism is fixedly connected to the bottom of the inner wall of the machine body. The right side of the machine body is fixedly connected with a handle, and the right side of the machine body is fixedly connected with a collecting mechanism. According to the agricultural mechanical weeding machine, by starting the second motor, the cutting blades can be driven to ascend and descend, meanwhile, the second gear and the first gear are meshed or separated, by starting the first motor, under the condition that the first gear and the second gear are meshed, the two cutting blades can be driven to rotate to cut weeds, and the weeding efficiency is improved. And under the condition that the first gear and the second gear are separated, the cutting blade cannot rotate at the moment, crops are better protected, and a better cutting effect is achieved.

The invention discloses a preparation method of retarded shrinkage alkali-activated slag-calcined coal gangue cement, and belongs to the technical field of concrete materials. Slag powder, calcined coal gangue fine powder and calcium carbonate whiskers are used as powder, and then a mixed alkaline activator prepared from water glass, sodium hydroxide and sodium carbonate is doped to prepare the retarding shrinkage-reducing alkali-activated slag-calcined coal gangue cement. The method can effectively solve the problems of short setting time and large shrinkage of the alkali-activated cement, and is expected to realize large-scale engineering application of the alkali-activated cement.

The invention discloses low-carbon red-mud-based fully-recycled concrete and a preparation method thereof, and relates to the technical field of low-carbon concrete materials. The concrete is prepared from the following raw materials in parts by mass: 50 to 70 parts of modified red mud, 30 to 50 parts of recycled micro powder, 130 to 150 parts of recycled sand serving as a fine aggregate, 280 to 300 parts of recycled coarse aggregate serving as a coarse aggregate, 40 to 50 parts of water, 1 to 3 parts of a multifunctional powder modifier and an alkali activator. The main raw material adopted by the invention is building or industrial solid wastes, the residual alkalinity of the red mud is utilized, the activity of the regenerated micro powder is excited, the dosage of an alkali activator is reduced, and the red mud replaces cement to serve as a cementing material. In addition, building reclaimed sand and recycled coarse aggregate are used as concrete aggregate, so that not only is building waste effectively utilized, but also dependence on natural resources is reduced, and the production cost is reduced. The method has the characteristics of low preparation cost, low carbon and environmental protection, and has good environmental benefits and economic benefits.

The invention provides a method for determining the optimal addition amount of a dewatering flocculant in river sludge, and belongs to the technical field of sludge treatment. The method comprises the following steps: firstly, removing large impurities in the river silt, stirring to obtain pretreated silt, then sampling the pretreated silt, measuring the silt sand content of the sampled sample, and finally substituting the measured silt sand content into a relational expression between the silt sand content and the optimal dosage of the dewatering flocculant, which is obtained by fitting, so as to obtain the optimal dosage of the dewatering flocculant. And calculating the optimal addition amount of the dewatering flocculant required for treating the river sludge. According to the method, the optimal addition amount of the flocculating agent in the sludge vacuum dehydration process is determined only according to the particle size distribution of the river sludge and mainly according to the sand content, the judgment mode is simple and easy to implement, and convenience is provided for resource utilization of the sludge.

This invention relates to a spatial multi-layer ultra-high pressure belt dewatering system and method, comprising a main frame, a feeding device, a feeding device, a filter belt, a filter belt traction machine, a filter press hydraulic press, a hydraulic station, and a controller. The feeding device, feeding device, filter belt traction machine, and filter press hydraulic press are connected and installed on the main frame; the output end of the feeding device is connected and installed above the feeding device. The dewatering method includes starting the equipment, feeding, filter press dewatering, and unloading. This invention offers higher dewatering efficiency and lower cost, making it a more effective organic waste dewatering device for reducing pollution and carbon emissions.

The invention discloses a method for preparing manganese sulfate from sulfur-free low-grade rhodochrosite. The method comprises the following steps: by taking low-grade rhodochrosite as a raw material, grinding and pretreating the low-grade rhodochrosite, mixing the low-grade rhodochrosite with water, adding acetic acid, fully stirring, heating and leaching, and carrying out solid-liquid separation after the reaction is finished, so as to obtain a liquid-phase manganese acetate mother solution and solid-phase sulfur-free manganese slag; sulfuric acid is added into the manganese acetate mother liquor, heating and reduced pressure distillation are conducted, acetic acid is vaporized and then condensed and recycled for ore leaching, and manganese sulfate is crystallized and separated out in the heating process to serve as a product. Sulfuric acid is not in direct contact with manganese ore, the manganese slag does not contain sulfur, resource utilization is facilitated, and the treatment cost of the manganese slag can be remarkably reduced; and residual acid in the slag can be neutralized by lime water to stably exist, so that the risk of secondary pollution is avoided. The concentration of the acetic acid is not high, cyclic utilization is achieved in the method, the production cost is reduced through recycling of the acetic acid, the resource utilization rate is further increased, and the method is particularly suitable for the manganese extraction process of low-grade rhodochrosite.

The application provides a kitchen waste sorting device, and belongs to the technical field of waste treatment. The kitchen waste sorting device comprises a material distribution mechanism, a plurality of plastic cutting members and a double-curved-surface stirrer, and a conical material distribution hopper is provided with an inlet pipe on the side. An air flotation tank is located above the conical material distribution hopper and is in communication with the top of the conical material distribution hopper. The sidewall of the air flotation tank is provided with a discharge pipe. A plastic conveying mechanism is located below the water surface of the air flotation tank at the bottom and is located obliquely above the air flotation tank at the top. A slag discharge mechanism comprises a discharge pipe and a screw conveyor. The integrated kitchen waste sorting device can realize efficient sorting of plastic, waste oil, food residue and waste water. The waste oil and food residue can be recycled, which is conducive to the recycling of kitchen waste and the subsequent solid waste and waste water treatment.

This invention belongs to the field of blast furnace carbon emission reduction technology and discloses a blast furnace carbon emission reduction ironmaking system and method, including: oxygen-enriched ironmaking with the participation of a mixed reaction gas with high CO2 concentration. Due to the use of CO2 in the blast furnace blast and pulverized coal carrier gas, the oxygen enrichment rate is increased, and the amount of biochar is increased, thereby improving the smelting intensity of the blast furnace, increasing the proportion of pulverized coal replacing coke (increasing the coal ratio and decreasing the coke ratio), reducing ironmaking costs, and reducing carbon emissions. Furthermore, due to the use of CO2 injection and oxygen-enriched ironmaking operations, the amount of air incorporated into the mixed reaction gas is reduced, increasing the concentration of CO and CO2 in the blast furnace gas, which is beneficial for subsequent capture, separation, purification, and resource utilization of different components in the blast furnace gas.

The invention relates to an agricultural residual film sorting method and system.The method comprises the steps that to-be-sorted materials containing agricultural residual films are subjected to first screening, and light materials are obtained; the light material is crushed, and a crushed material is obtained; the crushed materials are subjected to winnowing separation, and solid materials and air flow containing plastic membranes are obtained; and carrying out gas-solid separation on the gas flow containing the plastic membrane to obtain the plastic membrane. According to the device and the method, efficient and high-precision separation of the plastic film and the biomass in the agricultural residual film material can be realized, resource utilization of the plastic and the biomass is promoted, and the device and the method have remarkable social and economic benefits.

The invention relates to a hot slag air quenching granulation waste heat recovery system which comprises an air quenching chamber, a material conveying assembly, a membrane cooler, a boiler assembly and a discharging assembly. A buffer pool and a nozzle are arranged in the air quenching chamber. A plurality of discharging holes are formed in the bottom wall of the buffer pool. And hot slag enters the air quenching chamber and then falls to the material conveying assembly through the discharging hole. The nozzle is located below the buffer pool and used for scattering the hot slag into coarse sand. And the material conveying assembly is used for conveying the coarse sand into the membrane type cooler. And the membrane cooler is used for cooling the coarse sand to generate high-temperature water and inputting the high-temperature water into the boiler assembly. The boiler assembly includes a steam generator. The steam generator is used for enabling high-temperature water in the steam generator to form saturated steam and saturated water under heating of the boiler body. And the saturated steam is discharged through the discharging assembly. And the saturated water flows back to the membrane cooler and exchanges heat with the coarse sand again to form high-temperature water. Waste of water resources and waste heat resources is reduced, two byproducts of finished sand and saturated steam are generated, and the economical efficiency is good.