204results about How to "Realize resource utilization" patented technology

The invention belongs to the field of soil environment pollution simulation and prediction, and provides a prediction method based on a two-point chemical unbalanced model, which is used for quantitatively evaluating the effect of regulating and controlling the migration behavior of p-nitrophenol in acid red soil by straw stalk biochar. According to the method, a biochar-red soil composite medium system is constructed, a soil column leaching experiment is carried out to obtain penetration curve data, a two-point chemical unbalance model in CXTFIT software is utilized to carry out parameter inversion, and key parameters such as a retardation factor, a two-region distribution coefficient, a mass transfer coefficient and a liquid phase degradation coefficient are accurately identified. Model verification shows that the goodness of fit is high, and a parameter change rule reveals the inherent mechanism of enhancing the pollutant retention capacity, changing the proportion of fast and slow adsorption sites and influencing mass transfer kinetics by the biochar. Based on the verified model, the long-term migration behavior and pollution risk of p-nitrophenol under different environmental conditions can be simulated, and a scientific basis is provided for groundwater pollution control and remediation strategy optimization.

The invention relates to the technical field of asphalt preparation, in particular to SBS / waste rubber powder composite modified asphalt and a preparation method thereof.The preparation method comprises the following preparation steps that S1, matrix asphalt and modified SBS are mixed and dissolved, and after shear development, a first-order mixed and dissolved substance is obtained; s2, adding modified rubber powder into the first-order miscible substance, and shearing and developing to obtain a second-order miscible substance; and S3, adding a stabilizer into the second-order miscible substance, and stirring and cross-linking to obtain the SBS / waste rubber powder composite modified asphalt. Through the synergistic effect of the modified SBS and the modified rubber powder, the viscosity of a system is reduced, the network structure strength of the SBS is maintained, a stable physical-chemical composite network is formed in the asphalt, phase separation is not prone to occurring in the heat storage process, the low-temperature ductility of the asphalt is improved, and the composite modified asphalt still keeps good flexibility in a low-temperature environment.

The application relates to an acetic acid-regulated sodium metaaluminate-doped calcium-aluminum-phosphorus defluorination material based on eggshell, a preparation method and application thereof, and belongs to the technical field of defluorination water treatment. The method is as follows: eggshell powder, a phosphorus source and sodium metaaluminate are added into a mixed solvent composed of acetic acid and water, mixed and dispersed to form a uniform reaction system; the pH of the reaction system is adjusted to be alkaline; the adjusted reaction system is transferred into a closed reaction container to perform a solvothermal reaction; after the reaction is completed, the obtained solid product is separated and washed; and the washed product is dried. In the application, acetic acid is used for regulating the dissolution and conversion of the eggshell calcium source and the material crystallization process, sodium metaaluminate is used for introducing aluminum components and adjusting the material structure, so as to construct an Al-Ca-P synergistic defluorination system. The obtained material can be used for removing fluorine ions in fluorine-containing water bodies. The application has the dual characteristics of resource utilization of waste eggshells and preparation of defluorination functional materials, and has the advantages of simple process, easily-obtained raw materials and high application value.

The invention relates to the technical field of bacterial cellulose preparation, in particular to a composite flora for producing bacterial cellulose and a preparation method thereof, and the preparation method comprises the following steps: screening gluconobacter oxydans, obtaining culture medium preparation materials and preparation tools, preparing a slant culture medium set, preparing an enriched liquid culture medium set, and preparing composite flora mixed inoculation liquid. The method comprises the following steps: preparing a waste tobacco leaf leaching solution, extracting a proportional leaching solution from the waste tobacco leaf leaching solution according to a preset proportion, obtaining a mixed fermentation culture medium based on a preparation tool and the proportional leaching solution, and carrying out inoculation operation on a composite flora mixed inoculation solution by using the mixed fermentation culture medium to obtain a dry cellulose membrane; calculating the yield of the bacterial cellulose based on the dry cellulose membrane, and completing the preparation of the composite flora for producing the bacterial cellulose based on the yield of the bacterial cellulose. The method can be used for scientifically, efficiently and stably preparing the composite flora.

The invention discloses an agricultural non-point source pollution treatment system, and relates to the technical field of agricultural environmental protection and water treatment, and the agricultural non-point source pollution treatment system comprises an ecological ditch unit, an ecological pond unit, a connecting pipeline and a control unit; the ecological ditch unit is used for carrying out primary pretreatment on sewage through a plant enhanced corridor and an ecological filter dam to remove suspended solids and part of pollutants; the ecological reservoir pond unit realizes deep purification through a multi-stage process of flocculent precipitation, enhanced denitrification, ecological treatment and a stable area; the control unit intelligently regulates and controls water flow based on water quality monitoring data, water reaching the standard is directly reused in farmland or lakes, and water not reaching the standard enters a pond to be further treated. According to the invention, stepped deep removal of pollutants, cyclic utilization of water resources and self-adaptive operation of the system are realized, and the treatment efficiency and stability are improved.

This invention discloses a process for utilizing silica suboxide micropowder, its products, and applications. The process includes: (1) mixing silica suboxide micropowder, carbon nanotubes, a dispersant, and a solvent to obtain a raw material dispersion, stirring until uniform, then mechanically ball-milling the dispersion, and finally drying it to obtain a silica suboxide / carbon nanotube composite; (2) shaping the silica suboxide / carbon nanotube composite prepared in step (1) to obtain a silicon-based material / carbon nanotube agglomerate; and (3) carbon-coating the silicon-based material / carbon nanotube agglomerate prepared in step (2) to obtain a silicon-carbon composite material. The utilization process disclosed in this invention not only fully utilizes the micropowder resources, but also enables batteries assembled from silicon-carbon composite materials prepared using silica suboxide as raw materials to possess high initial efficiency, high reversible specific capacity, and excellent cycle stability, thus solving a series of problems existing in the direct use of silica suboxide micropowder in batteries.

The utility model discloses a kind of deep-frying smoke exhaust heat recovery structure, it is related to heat recovery field.The utility model includes: water storage component, the inside of water storage component is equipped with heat exchange component, one end of heat exchange component is equipped with smoke inlet pipe, the other end of heat exchange component is equipped with separation component, the inner wall of separation component is slidably cooperated with two filter components.The utility model is filtered to flue gas by being equipped with filter component, waste oil is separated from smoke, play the role of purifying flue gas, waste oil is stored in oil tank, so that staff can secondary processing to waste oil, for producing biodiesel or other industrial use, so not only recycle heat energy, but also realize the resource utilization of waste oil, improve overall economic benefit;Through the heat exchange component of being equipped with, heat is introduced into water storage component, water source in water storage component is heated for standby, greatly improve the utilization of heat.

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

This utility model belongs to the field of livestock breeding technology, and particularly relates to a disinfection device for the interior of livestock pens. It includes a pen and a column fixedly installed on the top of the pen. A canopy is fixedly connected to the top of the column, and a guardrail is fixedly installed on the front of the column. A partition is installed inside the pen, and a disinfection mechanism is installed on the top of the partition. The disinfection mechanism includes a water tank, a water pump box, a mounting frame, and a nozzle. This disinfection device for the interior of livestock pens, through the disinfection mechanism composed of a water pump box, water pipes, and nozzles, can automatically spray disinfectant water from the water tank, achieving automated disinfection inside the pen. It eliminates the need for manual operation of a handheld sprayer, significantly reducing labor input, improving disinfection efficiency, and reducing the risk of personnel contact: avoiding direct contact with disinfectants by workers, reducing the health hazards of long-term exposure to disinfectant environments, and ensuring the safety of operators.

The application relates to a method for preparing RM / Ni(OH)2 nanometer material based on red mud and application, and aims to utilize solid waste red mud (RM), slowly hydrolyze Na2O and CaO in the RM, take metal oxides such as Fe2O3, Al2O3 and TiO2 as supporting materials, in-situ grow Ni(OH)2 nanometer sheets on the RM surface through a one-step hydrothermal method, and prepare RM / Ni(OH)2 nanometer adsorption material. The adsorbent RM / Ni(OH)2 has the characteristics of high adsorption capacity, low cost and simple manufacturing process, can effectively adsorb dye wastewater, realizes resource utilization of the RM, provides a new idea for water dye pollution treatment and RM resource utilization, combines the advantages of high specific surface area and rich surface functional groups of the red mud and Ni(OH)2, and makes up for the shortage of limited adsorption capacity of the two. The raw material source is rich, the RM is not subjected to traditional acid-base treatment in the use process, secondary pollution caused by acid-base waste liquid to the environment is reduced, and the true "waste treatment with waste" is realized.

This invention relates to a method for the resource utilization of ammonia-containing waste generated during beryllium smelting, belonging to the technical field of wastewater and waste residue treatment and resource utilization. The method includes: mixing aluminum ammonium vanadium slag with beryllium washing wastewater; mixing the resulting aluminum ammonium vanadium beryllium solution with a calcium-containing transforming agent to obtain aluminum-calcium slag and aluminum ammonium vanadium purified solution; mixing solution A with beryllium precipitation wastewater and adding a calcium-containing alkaline substance to obtain a conditioning solution and gypsum slag; adding a decalcifying agent to the conditioning solution for precipitation and decalcification to obtain decalcified slag and decalcified solution; stripping the decalcified solution to obtain ammonia water and ammonia stripping mother liquor; solution A is an aluminum ammonium vanadium beryllium solution and / or aluminum ammonium vanadium purified solution; or, mixing the aluminum ammonium vanadium purified solution with beryllium precipitation wastewater and evaporating and crystallizing to obtain ammonium salts. This method fully utilizes the ammonia resources in the ammonia-containing waste generated during beryllium smelting, preparing ammonium salts or ammonia water, achieving full recycling of ammonia nitrogen in the production process.

The application discloses a gelatinous material prepared by using industrial waste residues and used for oilfield water layer plugging, a preparation method and a water plugging cement slurry, and relates to the technical field of oilfield water plugging materials. The gelatinous material is composed of 25-40 parts of superfine siliceous material, 50-65 parts of superfine calcareous material, 4-8 parts of superfine silico-aluminous material, 1-2 parts of nano calcium silicate, 2-4 parts of superfine expanding agent and 1-3 parts of starch density stabilizer in terms of weight percentage. The application solves the technical problems of low plugging strength, poor plugging effect, poor durability and high cost of the existing water plugging materials, and meets the oilfield water layer plugging requirements of different working conditions.

The application belongs to the technical field of methanol preparation, and particularly relates to a device and a preparation method for preparing methanol by combining carbon dioxide hydrogenation with chemical chain combustion, which comprises a power generation system, an electrolytic cell, a chemical chain combustion reactor, a pure oxygen supplement combustion chamber and a methanol reaction unit. The power generation system is connected with the electrolytic cell. Oxygen generated by electrolysis of the electrolytic cell is connected with the chemical chain combustion reactor through a first pipeline. Oxygen generated by electrolysis of the electrolytic cell is connected with the pure oxygen supplement combustion chamber through a second pipeline. The chemical chain combustion reactor is connected with a raw material pipeline. The top of the chemical chain combustion reactor is connected with the pure oxygen supplement combustion chamber through a third pipeline. The pure oxygen supplement combustion chamber is connected with the methanol reaction unit through a fourth pipeline. Hydrogen generated by electrolysis of the electrolytic cell is connected with the methanol reaction unit through a fifth pipeline. Reaction products are discharged through a sixth pipeline.

This invention discloses a ceramic filter media based on Yellow River sediment. By mass percentage, the ceramic filter media comprises the following components: 66-82 wt% Yellow River sediment, 9-15 wt% high-alumina bauxite, 3-7 wt% iron oxide, and 6-12 wt% sodium-based bentonite; the mass ratio of SiO2, Al2O3, and Fe2O3 in the above system is 40-58:8-20:5-12. This application provides a high-value-added utilization method for Yellow River sediment, realizing the resource utilization of Yellow River sediment and solving the problem of Yellow River sediment disposal. The ceramic filter media prepared in this application has wide applications, including in wastewater treatment processes such as aerated biological filters and constructed wetlands. By utilizing solid waste to treat water pollution, it achieves "treating pollution with waste."

The invention discloses a waterproof construction method for a cave dwelling building roof. The waterproof construction method comprises the following steps that firstly, part of original covering soil is dug; 2, mixing the excavated original covering soil with a curing agent, an additive and water to obtain flow-state solidified soil; and thirdly, a first layer of flow state solidified soil is poured on the compacted covering soil, then an adhesion agent is brushed, geogrids are laid, and then a second layer of flow state solidified soil is poured. According to the method, part of original covering soil of the cave dwelling building roof is excavated and prepared into the flow-state solidified soil, finally the flow-state solidified soil is poured back to the cave dwelling building roof, site spoil is utilized, resource utilization of building waste is achieved, and the method is economical and environmentally friendly; meanwhile, narrow gaps, pores and cracks which are difficult to treat by a traditional material are filled by utilizing the fluidity and the self-compaction characteristic of the fluid-state solidified soil; and furthermore, a solidified body formed after hardening has excellent anti-permeability performance, so that permeation of kiln crown covering soil water is effectively blocked, the stubborn disease of kiln crown covering soil water seepage is radically treated, and the material cost is reduced by more than 30% compared with that of a traditional method.

This disclosure relates to the field of titanium extraction technology from blast furnace slag, and particularly to a method for controlling the titanium carbide content using iron oxide powder, comprising the following steps: Step 1, when the slag generated by the carbon-blending of titanium-containing blast furnace slag reaches the smelting endpoint, a sample is taken to detect the mass percentage of titanium carbide in the slag; Step 2, when the mass percentage exceeds a set threshold, iron oxide powder is added to the slag to control the mass percentage within a reference range. This disclosure solves the problem of easy bending of titanium slabs with large aspect ratios during the upsetting process. This disclosure also solves the problem of high TiC content in existing titanium-containing blast furnace slag carbon-blending processes. By adding iron oxide powder to react with excess TiC in a directional manner, the TiC content can be stably controlled within a reference range, effectively reducing slag viscosity, ensuring smooth slag discharge, and avoiding safety hazards such as equipment blockage; at the same time, it improves the temperature control effect of the subsequent boiling chlorination reaction, and improves the efficiency and quality of subsequent titanium resource recovery.

This invention discloses a high-performance vitrified microsphere composite polystyrene particle insulation board and its preparation method, comprising the following steps: premixing hydrophobic vitrified microspheres and expandable polystyrene particles coated with expanded graphite at a mass ratio of (2.5~4):1 to obtain composite lightweight aggregate. The insulation board prepared by this invention, with a dry density of only 184-193 kg / m³, exhibits a compressive strength as high as 0.275-0.302 MPa, significantly superior to traditional inorganic insulation boards (0.15-0.25 MPa) and organic insulation boards (0.10-0.15 MPa); its thermal conductivity is as low as 0.034-0.041 W / (m·K), and its insulation efficiency is more than 40% higher than that of traditional inorganic materials, while also possessing Class A fire safety performance; furthermore, the process is simple and controllable, with an industrial solid waste utilization rate of up to 70%, demonstrating significant economic benefits and environmental value, and possessing broad prospects for widespread application.

This invention relates to a modified asphalt and its preparation method, comprising: (1) mixing styrene tar with a pretreatment solvent, allowing it to stand and separate into upper and lower liquid layers; (2) removing the pretreatment solvent from the upper and lower liquid layers respectively to obtain liquid phase Y1 and liquid phase Y2; (3) mixing waste rubber powder with liquid phase Y1 and reacting them, followed by solid-liquid separation to obtain solid phase G1, while simultaneously recovering the separated liquid phase Y3; (4) mixing solid phase G1 with liquid phase Y2 to obtain mixture G2; and (5) adding mixture G2 to the base asphalt to obtain modified asphalt. This invention pretreatment of hazardous waste styrene tar before its use as an additive improves the mixing effect of waste rubber powder and base asphalt, ensures product quality, realizes the resource utilization of styrene tar, and reduces production costs.

The present application relates to solid waste recycling technical field, provide a kind of based on coal-based solid waste's anti-dispersion grouting material and its preparation method and application, the material is made of coal gangue, fly ash, silica ash, cellulose, water reducing agent and alkali activator, wherein, alkali activator is made of deionized water, sodium hydroxide and water glass.The based on coal-based solid waste's anti-dispersion grouting material is prepared according to following steps: after mixing coal gangue, fly ash, silica ash, cellulose and water reducing agent, stirring treatment is carried out, and powder precursor is prepared;Alkali activator is added to the prepared powder precursor, and alkali activator is made of deionized water, sodium hydroxide and water glass, continue to stir to prepare the based on coal-based solid waste's anti-dispersion grouting material.The present application can prepare the anti-dispersion grouting material of excellent fluidity, stability and mechanical property, provides innovative path for the resource of coal-based solid waste, significantly reduces material cost, improves environmental benefits and engineering application value.

The application provides a construction method of a coastal cofferdam oyster breeding and fattening sewage purification system, and relates to the technical field of sewage purification systems. The method comprises the following steps: constructing a breeding pond; initially hardening the breeding pond; laying a sewage pipeline; reinforcing the hardening of the breeding pond; and laying a seepage-proof membrane. The system constructed by the method comprises a breeding pond, a sewage pipeline and a sewage pump. The construction of a breeding ridge and a sewage ditch structure at the bottom of the breeding pond, the hardening and seepage-proof treatment, the laying of the sewage pipeline at the bottom of the sewage ditch and the installation of the sewage pump make it possible to breed and fatten oysters in the coastal cofferdam, effectively solve the technical problems of sediment accumulation and water quality deterioration in the breeding pond, the unique floating ball type sewage valve design completely isolates the residual pollutants in the sewage pipeline from the clean breeding water body, completely eliminates secondary pollution and guarantees the growth and cultivation environment of oysters.

The application relates to a construction slag farmland resource utilization method, which comprises the following steps: 1) dry treatment and air drying of the slag: obtaining air-dried construction slag; 2) garden waste composting: obtaining a garden waste compost product; 3) preparation of a composite improvement medium; 4) preparation of improved dry and hot construction slag primary products by using the composite improvement medium, the air-dried construction slag and the garden waste compost product; and 5) standing and culturing of the improved dry and hot construction slag primary products to obtain improved planting soil. The application can solve the practical problems of difficult treatment of construction slag and garden waste, realize resource utilization of the construction slag in farmland, and meet the requirements of farmland resource protection, energy saving and emission reduction, environmental protection and economic benefits.

This disclosure pertains to the field of nuclear power technology, specifically relating to a wastewater treatment system for thermal power plants. The system provided by this disclosure enables the separate treatment of condensate polishing regeneration wastewater, reducing the difficulty of treating wastewater mixed with other wastewater; it achieves resource utilization of condensate polishing, giving pollutants resource-recovery characteristics, recovering resources in the form of ammonium sulfate and sodium chloride, saving solid waste disposal costs. This not only has environmental benefits but also brings economic benefits to the power plant, reducing overall wastewater treatment costs. Furthermore, the system of this disclosure occupies less space, is easier to use, and achieves flexibility in plant layout and intensive land use.

The application discloses a kind of light foam sandy soil based on low-temperature resistant microbial curing agent and its preparation method, the light foam sandy soil includes solid matter and liquid matter, the mass ratio of solid matter and liquid matter is 3.5-6:1, the proportion of each substance in solid matter is 78-84wt% of sandy soil, 12-18wt% of composite activator, 4-6wt% of bacterial foam adsorbent, and the liquid matter is cementing solution.The preparation method includes the following steps: preparing low-temperature resistant microbial curing agent;The prepared low-temperature resistant microbial curing agent is mixed uniformly with sandy soil to obtain solid matter;The obtained solid matter is mixed uniformly with cementing solution, i.e. to obtain light foam sandy soil based on low-temperature resistant microbial curing agent.The technical scheme of the application significantly improves the survival rate and mineralization efficiency of the strain in low-temperature environment, and the light foam sandy soil prepared using the technical scheme has a lower mass per unit volume, higher compressive strength and higher permeability resistance.

This invention provides a method for synthesizing dimethyl carbonate, belonging to the field of carbonate compound synthesis technology. The synthesis method of this invention does not require high temperature and high pressure conditions, and can be carried out at room temperature and pressure, significantly reducing energy consumption and equipment requirements. By coupling the reduction and oxidation reactions of photoelectrochemical carbon dioxide conversion, the synthesis energy barrier of dimethyl carbonate is lowered, improving energy utilization efficiency. Using greenhouse gas carbon dioxide as the main raw material, waste resource utilization is achieved, and the energy used is clean energy such as solar or electrical energy, avoiding pollution at the source. This invention couples the carbon dioxide conversion and dimethyl carbonate synthesis steps, realizing the recycling of the reactant methanol within the system, simplifying the process flow. The combined use of light and electrical energy produces a synergistic effect, improving the reaction rate and the selectivity of dimethyl carbonate.

The invention discloses activated carbon with biochemical sludge doped with organic matter and a preparation method thereof.The preparation method comprises the following steps that the biochemical sludge is subjected to dehydration pretreatment and fully mixed with the organic matter, then drying and smashing are conducted, and standby sludge particles are obtained; carbonizing the standby sludge particles at constant temperature, and grinding to obtain carbonized material powder; mixing the carbonized material powder with an activating agent, adding the mixture into deionized water, carrying out water-bath heating reaction, and filtering and drying a product; performing constant-temperature activation under the protection of inert gas to obtain an activated product; and placing the activated product in concentrated acid for ultrasonic treatment, and then washing, drying and crushing to obtain the product. According to the method, the biochemical sludge is prepared into the activated carbon, waste is turned into wealth, resource utilization of the biochemical sludge is achieved, the treatment cost of the biochemical sludge is saved, environmental benefits and economic benefits are achieved, and the obtained activated carbon is stable in structure, developed in pores, large in specific surface area and high in adsorbability.

This invention relates to the field of resource utilization technology for waste soil and discloses a method for combined lithium slag and carbide slag electroosmosis reinforcement of waste soil. The method involves mixing lithium slag and carbide slag in a specific ratio with waste soil to form modified soil with low moisture content, which is then cured using an electroosmosis device to achieve rapid reinforcement and resource utilization of the waste soil.

The invention discloses a novel biomolecular carbon material device for removing antibiotic pollutants in meat and vegetables as well as a preparation method and application of the novel biomolecular carbon material device. The novel biomolecular carbon material device is used for removing the antibiotic pollutants in the meat and vegetables. The biomolecular carbon material is prepared by the following steps: preparing biochar from coffee residues and tea residues through a specific firing process, pressing the biochar through a specific adhesive to form a spherical device, and drying the spherical device. The spherical device is placed in a container containing meat or vegetables, and antibiotic pollutants in the container can be effectively adsorbed. According to the invention, resource utilization of wastes is realized, a safe, efficient and environment-friendly method for removing antibiotic pollutants in meat and vegetables is provided, food safety is guaranteed, and the method has important application value in the field of food safety.

The invention discloses a preparation method of a carbon dioxide hydrogenation reaction catalyst. The preparation method of the oxygen carrier comprises the following steps: placing one or more of particles manually loaded with a copper element or natural ore particles and blank alumina pellets in a fluidized bed reactor according to a ratio, introducing methane gas, and jointly fluidizing at 600 DEG C for 2 hours; and after the reaction is finished and cooling, introducing nitrogen, and adjusting the gas speed until particles are layered to obtain the product catalyst. According to the method, inert particles which are originally wasted in the chemical looping combustion industry can become core components for preparing the catalyst, a special carrier does not need to be additionally purchased, the raw material cost of the catalyst is remarkably reduced, active elements on the surfaces of the prepared particles are uniformly loaded, the wear rate is smaller than 0.2% / h, and the method is a catalyst preparation method oriented to industrial application.

This invention belongs to the field of die casting in metallurgical processes, and particularly relates to a method for improving steel ingot yield using high-temperature CO2 gas. The method includes: 1) filling the steel ingot mold and runner with high-temperature CO2 before casting, and preheating the mold and runner to 400-700°C; 2) during casting, after the molten steel enters the ingot mold, the interior of the mold is a sealed space filled with CO2 atmosphere, and the CO2 heated by the molten steel is circulated back to the heat exchange furnace. No protective slag or heating agent is used during the casting process; 3) after casting, during the solidification process of the steel ingot, the high-temperature CO2 gas in the heat exchange furnace is used to replenish the CO2 gas in the ingot mold, resulting in slow solidification of the steel ingot and sufficient riser feeding. The advantages are: using high-temperature CO2 gas as an isolation, heat transfer, and insulation medium, and through a closed circulating heat exchange system, precise temperature and atmosphere control are achieved during the casting and solidification process of the steel ingot. By optimizing feeding and reducing waste, the steel ingot yield can be increased to over 90%.

This invention relates to the field of vegetation restoration in desertified areas of the Qinghai-Tibet Plateau, and particularly to a pelleting technology for calcium silicate-enhanced biochar-based feed oat seeds and its application in desertification remediation. The invention includes the following steps: S1: Preparation and functional modification of raw materials; a: Preparation of modified biochar carrier; b: Preparation of activated calcium silicate reinforcing agent; c: Preparation of a special composite binder; S2: Component design of the seed pelleting powder; S3: Multi-layered pelleting process; S4: Application in desertification remediation in high-altitude and cold regions. Based on the synergistic principle of rhizosphere microecological regulation and plant calcium silicate nutrient enhancement, this invention uses modified yak manure biochar as a carrier to construct a water- and fertilizer-retaining framework, and activated calcium silicate as a reinforcing agent to improve seedling mechanical strength. A multi-layer coating process achieves the spatiotemporal orderly release of functions. This invention increases the germination rate and survival rate of oats, improves stress resistance, and realizes the resource utilization of waste and soil improvement.