206 results about "Co-processing" patented technology

The invention belongs to the technical field of inter-cooling water treatment, and relates to a system and method for cooperatively treating inter-cooling water through multi-stage bypasses. Comprising a gradient filtering unit, a modified adsorption unit and a composite adsorption unit which are sequentially connected, a bottom outlet of the gradient filtering unit is connected with a bottom inlet of the modified adsorption unit; a top outlet of the modified adsorption unit is connected with a top inlet of the composite adsorption unit; the gradient filtering unit sequentially comprises a manganese sand layer and a quartz sand layer from top to bottom; the modified adsorption unit is filled with a coal gangue modified straw biochar material; the composite adsorption unit is internally filled with a microcapsule-embedded calcium alginate-vinasse biochar composite material. According to the invention, three-stage cooperative treatment of iron suspended matter interception, sulfate radical adsorption and iron ion chelation is realized, and low-cost, green and sustainable indirect cooling water deep purification is realized by using the solid waste-based functional material.

The invention relates to a method for preparing a cement admixture resistant to mine water erosion by microwave synergistic chemical modification of fly ash, and belongs to the technical field of industrial solid waste recycling and building materials.According to the method, fly ash particles are mechanically activated and crushed, and a composite modifier treatment and gradient microwave activation technology is combined, so that the cement admixture resistant to mine water erosion is prepared; the activity of the fly ash and the erosion resistance of the cement-based material are obviously improved. The preparation process comprises the following steps: carrying out multi-stage mechanical grinding on the fly ash to obtain ultrafine powder; adding a composite modifier containing a mineral active component, an organic-inorganic composite modifier and a nano functional material for chemical activation; microwave irradiation and nitrogen quenching are adopted to cooperatively process and reconstruct the microstructure of the material; and finally forming through a microwave-steam coupling curing process. The obtained cement admixture can effectively solidify corrosive ions in mine water, improve the durability of traditional cement in a complex ion environment, and realize bulk resource utilization of fly ash solid waste.

The invention relates to the field of solid waste co-processing and utilization, and particularly discloses complex-phase gypsum-based self-leveling mortar and a preparation method thereof. The mortar comprises the following raw materials in parts by mass: 75-95 parts of complex-phase gypsum, 3-25 parts of an auxiliary cementing material and 0.5-2.5 parts of an auxiliary mixture, the complex-phase gypsum comprises semi-hydrated gypsum, dihydrate gypsum and anhydrous gypsum; the auxiliary gelling material is a mixed compound material of ordinary Portland cement, aluminate cement, a calcium sulphoaluminate cementing material and sulphoaluminate cement; the additive mixture comprises one or more of a retarder, a water-retaining agent, a suspension / stabilizer, a water reducing agent, a flow promoter, a defoaming agent, a water repellent and an exciting agent. The gypsum-based self-leveling mortar prepared by the invention integrates the advantages of single semi-hydrated gypsum and single anhydrous gypsum, realizes the characteristics of high early strength and high later strength, and has the advantages of high strength, good wear resistance and low cost.

The present invention relates to the technical field of metal production or refining, and provides a non-ferrous metal smelting slag recovery and treatment system and method, the method comprising: performing reduction activation treatment on the molten slag, cutting the slag flow by a guide plate and combining mechanical vibration to strengthen the reduction reaction; using ultrasound and gradient magnetic fields to collaboratively sort metal particles; forming a vortex flow field by a rotating spray gun to achieve directional alloy precipitation, and continuously discharging the alloy melt; converting the tailings into glassy building aggregates; recovering the waste heat and quenching the flue gas, using a high-temperature resistant filter bag to capture zinc-containing dust, and then removing sulfides and heavy metals through a graded absorption process. The system comprises an activation reactor, a sorting tower, a precipitation furnace, and a flue gas treatment unit, and each device realizes the collaborative treatment of molten materials through a sealed conveying structure. The present invention realizes the efficient dissociation and recovery of valuable metals, the full-quantity resource utilization of tailings, and the control of the depth of flue gas pollution, significantly improving the resource circulation efficiency and environmental friendliness.

The utility model discloses a chemical looping reaction system for co-processing sintering flue gas and coal gas, which comprises a sintering flue gas reactor, the upper part of the sintering flue gas reactor is connected with a first gas-solid separator, the lower part of the first gas-solid separator is connected with a first material return valve, the first material return valve is connected with a coal gas reactor, and the middle lower part of the coal gas reactor is provided with an overflow port; the overflow port is connected with the sintering flue gas reactor through an overflow pipe, and the sintering flue gas reactor and the coal gas reactor are filled with oxygen carriers. The device has the beneficial effects that the sintering flue gas and various coal gases of the steel mill can be cooperatively treated; heat and oxygen of the sintering flue gas are recycled; pollutants such as NOx, SO2, CO and dioxin in the sintering flue gas are treated; high-quality steam is produced for heat supply or power generation; and CO2 generated by coal gas combustion is enriched.

The invention provides a coal-fired boiler industrial steam supply system and a use method thereof, and relates to the field of industrial steam supply, the coal-fired boiler industrial steam supply system comprises: a combustion optimization module, which is used for realizing efficient combustion and reducing pollutant generation through dynamic combustion optimization and pollutant feedforward inhibition; the pollution co-processing module is used for realizing efficient removal of pollutants and cyclic utilization of resources through multi-stage co-pollution processing logic; the intelligent steam supply module is used for realizing efficient distribution of steam and energy utilization through a demand-driven steam network and energy gradient recovery; and the autonomous control module is used for realizing autonomous optimization and fault pre-judgment of the system through digital twin mirroring and swarm intelligence decision. Through the combustion optimization module and the pollution cooperative processing module, combustion characteristic prediction through machine learning is realized, and in combination with reverse adjustment of pollutant generation trend, dual optimization of combustion efficiency and environmental protection performance is realized, and the response speed and operation stability of the system are improved.

The invention discloses a method for cooperatively treating dross through graded smelting and oxidizing roasting, and relates to the technical field of pyrometallurgy, and the method specifically comprises the following steps: (1) smelting copper dross, and settling lead liquid to obtain lower-layer metal lead and upper-layer dross; and (2) putting the upper-layer dross into a converter, and sequentially carrying out oxidizing roasting and reduction smelting to obtain copper matte and lead bullion. According to the method, a two-stage process framework for improving the copper grade through smelting pot layering and converter deep lead removal is created for the first time, natural sedimentation layering of the lead liquid and the waste residues is achieved through the smelting pot by means of the density difference of molten substances, and metal and impurity phases are effectively separated; by means of the method, the lead liquid closed-loop circulation system improves the lead recovery rate to 97% or above, and the final copper grade of matte is improved to 55%-65%.

The application discloses a kind of for tantalum niobium tailings in tin metal recovery's synergistic treatment system, specifically related to metallurgical solid waste resource utilization technical field, acoustic-electricity perception pre-agglomeration module exports pre-agglomeration probability index according to pre-agglomeration threshold value;Heat resistance chromatography module exports the temperature field and fluidized void fraction distribution of suspected agglomeration area;Inhibiting ingredient self-adapting module calculates inhibitor addition rate according to distribution;Wind material decoupling adjustment module exports decoupled wind speed and feed rate set value according to addition rate and bed pressure drop;Chain negative feedback blocking module detects pressure drop deviation to generate feedback correction, superimposed to wind speed set value and reversely adjust feed rate set value, while used to update pre-agglomeration threshold value;The application realizes the online identification of agglomeration precursor, accurate danger area precision inhibiting and the closed-loop cooperation of wind material decoupling, inhibits the nonlinear deterioration of coking loss flow, makes tin recovery rate keep stable when tailings fluctuation, and reduces inhibitor consumption and manual intervention.

A co-treatment system for multi-source organic waste. The system comprises a frame, a coarse crusher, a mixer, a screw feeder, a fine crusher, a material collecting compartment, and a discharging device; the material collecting compartment is connected to and mounted at the upper portion of the frame; the fine crusher is located at the lower portion of the material collecting compartment and connected to and mounted at the lower portion of the frame; the coarse crusher, the mixer, and the screw feeder are fixedly connected from top to bottom and mounted on the frame beside the material collecting compartment; the screw feeder is connected and mounted between the mixer and the fine crusher; the material collecting compartment is connected to an output end of the fine crusher; the discharging device is connected to an output end below the material collecting compartment. By simplifying the structural design, the present invention reduces the space occupied by the system, reduces the manufacturing cost, improves the use and operation convenience of the system by means of highly automated structural design, and is conducive to the popularization of a device.

This utility model discloses a furnace ash acidic water treatment system, including a furnace ash conveying mechanism, a treatment mechanism connected downstream of the furnace ash conveying mechanism, and an intelligent control system. The treatment mechanism is also connected to an acidic water source for the synergistic treatment of acidic water and furnace ash. The intelligent control system is connected to the furnace ash conveying mechanism and the treatment mechanism to form a control and regulation loop that collects, stores, calculates, and regulates the output. This utility model combines the treatment of furnace ash and acidic water in an acrylonitrile co-processing unit, achieving "waste-to-waste" treatment, reduction of waste, and resource utilization, reducing the consumption of alkaline solutions for acidic water, and improving the economic efficiency of the system. Simultaneously, the intelligent control system enables automated operation of the system, reduces the frequency of manual operation, and solves the problems of over-adjustment, frequent adjustment, and instability that easily occur in traditional PID logic control, achieving rapid, stable, and precise control of the system.

The application discloses carbonized activated steel slag, a preparation method and application in preparation of cement clinker. The preparation method of the carbonized activated steel slag comprises the following steps: activating treatment of the steel slag by using an activating liquid, pH adjustment to 7-8 after first stirring, and then second stirring, filtration, washing, drying, grinding, and sieving to obtain the activated steel slag; and carbonization of the activated steel slag to obtain the carbonized activated steel slag. Through the chemical treatment and CO2 solidification cooperative treatment on the steel slag, the existing form of CaO in the steel slag is changed from multi-element to single-element, the existing form of CaO is optimized, the complex chemical composition of the steel slag is simplified, the steel slag is replaced by limestone as a raw material for calcining cement clinker, the utilization rate of the limestone is reduced, the utilization rate of the steel slag in the field of building materials is improved, and the performance of the cement is effectively improved.

The invention discloses a heat storage type gas oxidation destroying device based on coal gangue waste heat driving, and relates to the technical field of coal mine solid waste resource utilization and gas treatment, the heat storage type gas oxidation destroying device comprises a support, the support is provided with a coal gangue combustion unit, a gas preheating unit, a heat storage oxidation unit, a gas pretreatment unit and an intelligent control unit, the coal gangue combustion unit comprises a discharged material conveying device, the coal gangue which is a solid waste is innovatively used as a core waste heat source, heat energy released by combustion of the coal gangue indirectly preheats heat storage oxidation destruction of low-concentration gas, and cooperative treatment of the two kinds of waste is achieved. On one hand, the resource utilization rate of the coal gangue is greatly improved, and spontaneous combustion pollution is avoided; and on the other hand, methane in ventilation air methane is efficiently decomposed, emission of massive greenhouse gas can be reduced every year, the dual environmental protection targets of solid waste reduction and gas waste purification are achieved from the source, and the environment cooperative treatment effect is remarkably superior to that of a traditional independent treatment mode.

The invention discloses a steel pickling wastewater and incineration fly ash harmless cooperative treatment method which comprises the following steps: S1, adding incineration fly ash into steel pickling wastewater to form mixed slurry, adjusting the pH value of a system to be alkaline, and performing ultrasonic oscillation to obtain pretreated mixed slurry; s2, the mixed slurry obtained in the step S1 is subjected to a low-temperature hydrothermal reaction under the stirring condition, and a solid-liquid mixed system is obtained; and S3, cooling the solid-liquid mixed system obtained in the step S2 to room temperature, adding an oxidizing agent, and carrying out Fenton reaction.

The application relates to the technical field of blast furnace ironmaking, and particularly relates to a method for electric furnace smelting and solid waste cooperative treatment. The method comprises the following steps: pre-treating electric furnace oxidized slag to obtain electric furnace oxidized slag micro powder; first mixing the electric furnace oxidized slag micro powder, electric furnace dust removal ash and water, and controlling the proportion of the electric furnace oxidized slag micro powder and the electric furnace dust removal ash, and then standing to obtain first material; second mixing the first material, low-rank coal and waste graphite electrode, and controlling the proportion of the first material, the low-rank coal and the waste graphite electrode, and then performing balling treatment to obtain carbon-internal-proportioning pellets; performing reduction treatment on the carbon-internal-proportioning pellets, and controlling the process parameters of the reduction treatment to obtain metallized pellets and zinc oxide powder; and performing grinding and magnetic separation on the metallized pellets to obtain metallic iron powder and active tailings. The application solves the technical problems of low Fe recovery rate of existing electric furnace slag and low Zn element recovery rate of electric furnace dust removal ash.

The invention provides industrial kiln flue gas desulfurization and denitrification co-treatment equipment, and aims to effectively reduce emission of harmful substances and improve the flue gas treatment effect. The equipment comprises a combustion furnace, a ceramic filter, a catalytic converter, an absorber and a dust removal system. Smoke generated by the combustion furnace is introduced into the dust removal tank through the smoke dust pipe, spraying treatment is conducted under the action of the nozzles of the spraying pipe, and dust and harmful substances are effectively removed. Through the synergistic effect of the ceramic filter, the catalytic converter and the absorber, the desulfurization and denitrification functions are achieved. A sliding block, an annular sliding groove and a ball groove are arranged in the dust removal tank, friction and energy consumption are reduced, and the service life of equipment is prolonged. The water pump and the circulating water pipe ensure effective utilization of water resources, and waste is avoided. The filter plate enhances the dust removal effect, and the air blower and the motor driving device on the base improve the flue gas guiding and water flow conveying efficiency. The device ensures effective utilization of energy through accurate control, meets the requirement of environmental protection, and is widely applied to flue gas treatment of industrial kilns.

This invention discloses a method for the green co-processing of lithium slag and carbonaceous solid waste, relating to the field of slag treatment technology. The method includes: ball milling and mixing lithium slag, carbonaceous solid waste, and magnesium powder to obtain a reaction precursor; heating the reaction precursor under a protective atmosphere and negative pressure to produce solid products and flue gas containing beryllium, thallium, and fluorine; first, absorbing the flue gas containing beryllium, thallium, and fluorine with acid to obtain a beryllium-thallium acid washing solution; then absorbing the remaining fluorine-containing acidic tail gas with alkali to obtain a fluoride salt solution; mixing the solid product with the alkali solution, stirring, heating, washing to neutrality, and drying to obtain a porous material. This method practices the concept of "treating waste with waste," simultaneously solving the problems of gypsum decomposition, detoxification and fixation of toxic components, tail gas purification, and resource utilization through co-processing, achieving deep harmlessness of lithium slag, and significantly improving resource utilization and economic benefits.

The present invention relates to a collaborative treatment process for zinc-containing steel mill fly ash and red mud, comprising the following steps: uniformly mixing the zinc-containing steel mill fly ash to be treated with red mud in a mass ratio of 1-3:1, forming pellets to obtain pellets; adding the pellets, a reducing agent, and a flux to a molten bath smelting furnace, bubbling oxygen-enriched air, and smelting to obtain zinc-containing flue gas and molten iron; condensing the zinc-containing flue gas to obtain zinc liquid; and then smelting the zinc liquid and casting ingots to obtain zinc ingots. The present invention utilizes zinc-containing steel mill fly ash and red mud to directly smelt and produce pig iron and zinc ingots, greatly shortening the existing disposal process, obtaining high-value-added products, and simultaneously realizing the resourceful treatment of zinc-containing steel mill fly ash and red mud.

The present invention belongs to the field of metallurgical mineral processing technology and relates to a method for the coordinated treatment and comprehensive recycling of multiple smelting waste residues, comprising the following steps: (1) mixing raw materials to obtain a mixed material, which is then fed into an oxygen-enriched side-blown smelting furnace; (2) blowing oxygen-enriched air from primary tuyere on both sides of the furnace body of the oxygen-enriched side-blown smelting furnace to cause the materials to collide and react in the molten pool, ultimately obtaining flue gas, hot-melting furnace slag, and matte products; (3) electrolyzing the matte to produce refined copper and rare metals; (4) quenching the hot-melting furnace slag with water to obtain iron concentrate, slag concentrate, and waste tailings; and (5) feeding the flue gas into a waste heat boiler for treatment to obtain fine smoke, lump smoke, and flue gas. The present invention achieves the coordinated treatment of multiple waste residues, realizes clean disposal and resource-based, high-value, and harmless comprehensive recycling, achieves a win-win situation in terms of economic and environmental benefits, has great promotion and application value, and is exemplary in promoting the emission reduction and harmless utilization of gold smelting waste.

The invention relates to a method and system for cooperatively treating fluorine-containing wastewater by using steel slag, and the method comprises the following steps: adding a fluorine removal agent into the fluorine-containing wastewater, and carrying out preliminary coagulation to form a first fluorine-containing mixed solution; adding steel slag into the first fluorine-containing mixed solution, and stirring to form a second fluorine-containing mixed solution; adding a flocculating agent into the second fluorine-containing mixed solution, and carrying out flocculation treatment; and precipitating the mixed solution subjected to flocculation treatment to realize mud-water separation. By means of the efficient adsorption performance of the steel slag on fluoride and the chemical precipitation effect of active ingredients such as calcium and magnesium contained in the steel slag and fluorine ions, the treatment effect of a conventional fluorine removal technology is doubly enhanced. And moreover, the steel slag is recycled to replace part of the defluorination agent, so that the agent consumption cost is remarkably reduced, and the total amount of solid waste which finally needs to be treated is reduced as the steel slag participates in the treatment process as solid waste, so that the circular economy concept of treating waste with waste is really realized.

The invention discloses a global energy complementation and solid waste cooperative treatment system based on day and night time difference satellite microwaves, and belongs to the technical field of new energy scheduling and environment-friendly solid waste treatment. According to the system, on the basis of a satellite microwave transnational energy complementation scheduling architecture based on day and night time difference, photovoltaic surplus abandoned electricity is converted into microwave signals, transnational directional transmission is realized through a low-orbit relay satellite cluster, and meanwhile, surplus microwave energy is transmitted to realize transnational energy complementation. And solid wastes such as household garbage, excrement in a septic tank and sludge in a sewage treatment plant are subjected to closed anaerobic microwave cracking treatment. According to the system, five core modules of new energy waste electricity collection, microwave conversion emission, low-orbit relay satellite cluster, ground microwave receiving rectification and intelligent time difference scheduling control are reserved, a microwave solid waste cracking treatment module and a product separation and recovery module are additionally arranged, solid waste can be automatically separated into condensate water, combustible gas, fuel oil and sterile carbon residues, and full resource utilization is achieved. The two problems of photovoltaic abandoned electricity waste and solid waste pollution are synchronously solved, fossil energy consumption is zero, secondary pollution is avoided, the new energy utilization rate is greatly increased, the traditional solid waste treatment bottleneck is thoroughly broken through, and an integrated innovative solution is provided for global low-carbon energy development and ecological environment protection.

The present invention discloses a method and device for the coordinated treatment of waste plastic oil cans and iron-zinc dust sludge, wherein the device for the coordinated treatment of waste plastic oil cans and iron-zinc dust sludge comprises a washing device, a crushing device, a first screening device, a strong mixer, a briquetting machine, a drying device, a rotary hearth furnace, a flue gas quenching tower and a dust collector; the present invention uses waste plastic oil cans to replace part of the coke as a reducing agent, and utilizes a rotary hearth furnace and the iron-zinc dust sludge for coordinated treatment, which can not only achieve efficient recovery of iron and zinc, but also solve the pollution problem of waste plastic oil cans in steel plants to a certain extent, save energy and raw materials, and further reduce the cost of the coordinated treatment of the rotary hearth furnace.

The invention is applicable to the field of waste asphalt regeneration, and provides a waste asphalt regeneration and solid waste co-treatment reaction kettle system which comprises a pretreatment module, a main reaction module, a product separation module and a waste heat recovery module, the main reaction module comprises a reaction kettle body, a driving assembly, a gradient stirring assembly, a gradient stirring assembly, an ultrasonic microwave synergistic assembly and a dynamic regulation and control assembly; according to the invention, the mixing time is shortened to 1 / 3 of that of a traditional process, the gradient stirring assembly cooperates with a combined baffle through three stages of paddles (a flow guide propeller, a radial diffusion paddle and a bottom scraping and sweeping paddle), a three-dimensional flow field of'axial lifting-radial diffusion-bottom sweeping 'is constructed, only 8-10min is needed from feeding to uniform mixing (the uniformity is greater than 95%) of materials, and the mixing efficiency is greatly improved. And compared with a traditional anchor type stirring device (more than 30 minutes), the stirring time is shortened by 67%. Flow field simulation analysis shows that the flow velocity gradient of materials in the kettle is smaller than or equal to 0.5 m / s (the flow velocity gradient of traditional equipment is larger than 1.2 m / s), no obvious dead zone (the volume ratio of the dead zone is smaller than 3%) exists, and it is ensured that each particle can make contact with a reaction medium.

The invention discloses a collaborative treatment method for high-salt wastewater and blast furnace bag ash produced as a by-product of steel production, comprising the following steps: washing the blast furnace bag ash with high-salt wastewater, adding a reagent, and filtering to obtain a primary leaching slag and a primary leachate; washing the primary leaching slag with industrial water, adding a reagent, and filtering to obtain a secondary leaching slag and a secondary leachate; treating the secondary leaching slag with a rotary hearth furnace process to obtain metallized pellets and zinc oxide powder; mixing the primary leachate and the secondary leachate and using them as high-salt wastewater to wash the blast furnace bag ash again; when the chlorine content of the primary leachate is ≥15wt.%, purifying and removing impurities, and performing step-by-step evaporation and crystallization to prepare KCl and NaCl products. The present invention can fully recover the valuable components in the high-salt wastewater and blast furnace bag ash, realize the collaborative resource utilization of the high-salt wastewater and blast furnace bag ash, turn waste into treasure, and help achieve zero discharge of wastewater and solid waste in the steel process.

The invention discloses a method for preparing iron-containing furnace charge from high-proportion specular iron ore concentrate in a near-zero-carbon mode, and belongs to the technical field of ferrous metallurgy. According to the method, after surface activation pretreatment is conducted on the specular iron ore concentrate, the specular iron ore concentrate is evenly mixed with iron-containing and carbon-containing dust and magnetite concentrate, and then the mixture is further evenly mixed with an organic-inorganic composite binder and water to form a mixed material; carrying out compression molding and low-temperature consolidation on the mixture to obtain a cold-pressed block; according to the method, the high-proportion specular iron ore concentrate can be prepared into the cold pressing block which is high in strength, good in reduction performance and low in reduction expansion, and compared with an existing specular iron ore concentrate high-temperature agglomeration treatment process, the method is short in technological process and low in preparation temperature (lt); the method has the advantages of low temperature (300 DEG C), extremely low carbon emission, capability of cooperatively treating iron-containing and carbon-containing solid waste resources while treating specular iron ore concentrate on a large scale, and provision of a new technical route for green and low-carbon transformation in the iron and steel industry.

This invention discloses a system and process for the resource recovery of fly ash from municipal solid waste incineration. The system includes a feeding buffer unit, a slurry-washing unit, a low-temperature detoxification unit, a water treatment unit, and a tailings resource recovery unit. The slurry-washing unit includes a primary washing and dewatering device and a secondary washing and dewatering device. The filtrate from the primary washing and dewatering device is sent to the water treatment unit, and the solid ash from the secondary washing and dewatering device is fed into the preheating tank of the low-temperature detoxification unit. The low-temperature detoxification unit includes a preheating tank, a detoxification reactor, an energy recovery component, and a dewatering device arranged sequentially. The steam exhaust port of the detoxification reactor is connected to the preheating tank. The filtrate outlet of the dewatering device is connected to the preheating tank, and the ash outlet of the dewatering device is connected to the tailings resource recovery unit. The solid material outlet of the water treatment unit is connected to the preheating tank. This invention systematically solves the problem of synergistic treatment of chlorides, heavy metals, and dioxins in fly ash, and simultaneously achieves the resource recovery of fly ash and secondary pollutants.

The invention discloses a process for co-processing copper slag and fly ash by using steelmaking refining slag, which comprises the following steps: mixing fly ash generated by a coking plant with copper slag for pelletizing, adding pellets with the diameter of 5-20mm into the refining slag, and carrying out co-processing on the copper slag and the fly ash by using physical heat and high-alkalinity mineral structure of the steelmaking refining slag, heavy metal elements in the copper slag are reduced and recycled to serve as raw materials of the iron and steel industry for resource utilization, arsenic compounds in the alkaline steel slag and the copper slag react to form calcium arsenate, harmless conversion of harmful components in the copper slag is achieved, meanwhile, the technology optimizes the technological structure of the refining slag, the risk in the resource utilization process of the refining slag is reduced, and the economic benefit is increased. And economic benefits and environmental protection benefits are huge.

This invention relates to the field of flue gas treatment technology, specifically to a low-temperature demisting and dewhitening synergistic purification device for waste incineration flue gas treatment. The device includes a housing assembly, inside which a low-temperature demisting cylinder, a synergistic dewhitening cylinder, and an emission cylinder are sequentially arranged, all three connected by a common ventilation pipe. A first spiral guide rod and a second spiral guide rod are rotatably installed in the ventilation pipe located on one side of the low-temperature demisting cylinder and at the interval between the low-temperature demisting cylinder and the synergistic dewhitening cylinder, respectively. The end of the first spiral guide rod extends outside the ventilation pipe and is fixedly mounted with a drive motor. The low-temperature demisting cylinder contains a first flow equalization plate, a filter disc, a condenser tube assembly, and a demisting component. This invention connects the low-temperature demisting cylinder, the synergistic dewhitening cylinder, and the emission cylinder in series to form a three-stage synergistic treatment process, achieving stratified purification and dewhitening of flue gas, significantly improving the purification efficiency and operational stability of waste incineration flue gas, while reducing energy consumption and maintenance costs.

The present application relates to the technical field of solid waste resource utilization, and specifically discloses a kind of fly ash and pickling waste liquid collaborative quality grading carbon fixation process system, design 7-step collaborative quality grading carbon fixation process system, achieve the integration of multiple waste collaborative treatment and high-value product preparation.The process is strong in pertinence, outstanding in innovation, respectively adapts to power plant fly ash pretreatment, steel plant solid waste reduction, CCUS carbon emission reduction, steel plant hazardous waste disposal, high-end building material production and other scenes, and can also realize reagent circulation, efficient separation of silicon and aluminum, greatly reducing chemical reagent consumption.The carbon fixation efficiency of the process is ≥80%, the key reagent circulation loss rate is <5%, the prepared white cement whiteness is ≥90, the 28d compressive strength is ≥60MPa, high-value products such as white carbon black and calcium carbonate are simultaneously produced, realizing the collaborative disposal of power, steel and building material industry waste, providing technical support for cross-industry green recycling under the "double carbon" policy.

The utility model provides a modifier mixing device for saline-alkali land treatment, which belongs to the field of saline-alkali land treatment and comprises a barrel, a grinding component is arranged at the top of the barrel, and an auxiliary component is arranged below the grinding component. The grinding assembly comprises an inlet hopper, a grinding pipe, a grinding motor, a grinding shaft, a grinding wheel, a feeding groove, a grinding part and an auxiliary grinding block, and the inlet hopper is arranged at the top of the barrel. A rotary driving device at the bottom of the barrel provides power, a transmission rod drives a rotary disc body with a shunting channel at the top to uniformly disperse materials, and the crushing efficiency is improved by matching with an accurate gap; the adjustable flow guide component on the lower portion prevents material accumulation, the detachable collecting device at the tail end conveniently receives finished products through a spiral connector, the clean operation environment is ensured, and finally continuous cooperative processing from raw material input to finished product collection is achieved.

This invention discloses a preparation process for a high-density tungsten-cobalt cemented carbide, relating to the field of cemented carbide preparation technology. The process includes the following steps: S1: Batching: Tungsten carbide powder, cobalt powder, and a forming agent are precisely weighed according to a preset mass percentage and placed in a high-efficiency mixing device for pre-mixing to ensure that the components are initially and uniformly dispersed, resulting in a stable tungsten-cobalt mixture. This invention employs a multi-stage densification process involving wet ball milling, spray drying, die pressing, and cold isostatic pressing. This not only ensures that the mixture particles are sufficiently refined and uniformly dispersed, producing spherical composite powder with excellent flowability and significantly reducing internal defects in the formed blank, but also further enhances the density and uniformity of the blank through cold isostatic pressing, providing a good foundation for subsequent full densification during sintering, effectively reducing the porosity of the finished alloy and improving the overall structural stability.