244 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 cooperatively treating chromium-containing sludge by using a waste dust collecting bag and blast furnace dust. The method comprises the following steps: roasting the waste dust collecting bag to obtain roasted ash of the waste dust collecting bag; mixing the roasting ash and blast furnace fly ash; adding the mixed material 1 into the chromium-containing waste liquid, and carrying out plate-frame pressure filtration to obtain a mixed material 2; the method comprises the following steps: cutting iron ore into blocks, drying, roasting after drying, quickly water-cooling a roasted product, grinding after water-cooling, and magnetically separating a ground product to obtain spinel iron ore concentrate containing ferrochrome and low-chromium tailings. According to the method, the waste dedusting cloth bag and the blast furnace dedusting ash are used as curing agents, curing of heavy metal chromium in the chromium-containing sludge is achieved, the leaching rate of hexavalent chromium and total chromium in the obtained product is far lower than the standard limit value, harmless treatment of the chromium-containing sludge is achieved, the purpose of treating waste with waste is achieved, the obtained ferrochrome spinel can be recycled through magnetic separation, and the method is environmentally friendly. The produced low-chromium tailings can be directly buried or used as building materials.

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 invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment system and a wastewater treatment method, which realize a closed-loop system of'wastewater treatment-energy recovery-resource regeneration 'cooperative treatment by combining a microbial fuel cell with a sludge pyrolysis technology. According to the system, organic matters in wastewater are converted into electric energy by utilizing a microbial fuel cell system, meanwhile, the concentration of pollutants is reduced, generated sludge is subjected to two-stage pyrolysis after being subjected to dehydration pretreatment to prepare biochar, the biochar can be used for soil improvement, water purification and the like, and synthesis gas generated by pyrolysis is used for power generation to supplement energy consumption of the system. The resource utilization rate is effectively increased, the sludge yield is reduced, the treatment cost is reduced, and good environmental benefits and economic benefits are achieved.

The invention belongs to the technical field of ferrous metallurgy, and particularly relates to a production method of low-silicon sulfur-added high-aluminum gear steel which comprises the following chemical components in percentage by weight: 0.15%-0.20% of C, 0.06%-0.12% of Si, 1.35%-1.55% of Mn, 0.035%-0.055% of S, 1.10%-1.20% of Cr, 0.035%-0.055% of Al, 0.012%-0.016% of N, less than or equal to 0.0010% of O and the balance of Fe and inevitable residual elements. The overall process route of the production method comprises the steps of converter primary smelting, tapping pre-calcification and sulfurization, LF refining slagging, RH vacuum treatment and continuous casting protection pouring. By optimizing the composition of the refining slag, controlling the sulfur content in stages and co-processing calcium and aluminum, the continuous casting castability problem of the low-silicon sulfur-added high-aluminum gear steel is effectively solved, and the liquid level fluctuation percent of pass of a crystallizer is greater than 99%.

The invention discloses a method for cooperatively treating a lead-copper anode slime mixture through a noble lead furnace and a top-blown furnace, which comprises the following steps: mixing copper-lead anode slime according to a certain proportion, conveying the copper-lead anode slime into the noble lead furnace for melting, dividing the copper-lead anode slime into a reducing slag layer and a noble lead layer in a reducing atmosphere in the furnace, conveying the slag material into a slag converter through a chute, precious lead is conveyed into the top-blowing silver separating furnace through a chute to be oxidized and refined, and reducing slag is subjected to slag material secondary sedimentation in the slag converter. Later-stage slag, tellurium slag, alloy cleaning slag and crude silver are produced through deep oxidation refining, the later-stage slag returns to a bismuth system for treatment, the tellurium slag returns to a tellurium system for treatment, the alloy cleaning slag returns to a refining furnace for treatment, and the crude silver returns to gold, silver, platinum and palladium for treatment. The bottom blowing smelting furnace, the antimony production system and the bismuth production system are organically combined for cooperative treatment, liquid lead slag material chute stepped closed conveying is achieved in the production process, the production period can be shortened, the metal amount occupation pressure is reduced, the gold and silver direct recovery rate is increased, the working environment is improved, the labor intensity is reduced, and the production cost is reduced.

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 present invention relates to the technical field of waste treatment, and provides a co-treatment system and method for oil-based drill cuttings and red mud waste, mainly including: a mixing device, a forming device, a pyrolysis device, a coke quenching device and a screening device connected in sequence. The mixing device is used to obtain a mixture of oil-based drill cuttings and red mud; the forming device is used to form the mixture into pyrolysis raw materials; the pyrolysis device is used to pyrolyze the pyrolysis raw materials to generate pyrolysis solid-phase products; the coke quenching device is used to cool down the pyrolysis solid-phase products; the screening device is used to screen the cooled pyrolysis solid-phase products to obtain granular pyrolysis solid-phase products, and the pyrolysis solid-phase products are red mud drill cuttings-based iron-carbon materials. The present invention realizes the co-treatment of two kinds of wastes, namely oil-based drill cuttings and red mud, achieves the purpose of treating waste with waste, and has the characteristics of simple operation, stable and reliable, energy-saving and environmental protection, etc.

A co-processing that includes converting oil drilling waste into a material with technical characteristics that can be used as fuel or alternative raw material for a specific petrochemical process. In the co-process, the components that make up the waste such as solid, oil, and water are recovered. The co-process is a self-sustaining process, reducing gas emissions into the atmosphere, accompanied by savings in the operating cost of the process.

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 present invention discloses a method for filtering high-oil solid wastewater using an old landfill body and a method for preparing a carbon source supplement liquid. The present invention uses urban domestic wet garbage as the raw material of the carbon source supplement liquid and cooperates with the landfill body, and can simultaneously process the wet garbage slurry with high oil and high impurities and the old leachate with high nitrogen and low carbon-nitrogen ratio, solving the key problems in the operation and management of the garbage plant and effectively improving the leachate treatment capacity. The wet garbage slurry is taken for pretreatment, and the landfill body is used as a carrier for anaerobic fermentation and screening filtration to prepare a high-quality carbon source supplement liquid, which helps to supplement the problem of low carbon content in the old leachate and ensures the quality of the sewage treatment effluent. At the same time, the effluent will not cause an increase in COD, total nitrogen, and total phosphorus. The carbon source supplement liquid provided by the present invention does not require additional raw material acquisition costs, and the slurry and the old leachate are processed in a coordinated manner, thereby improving the overall efficiency of the garbage treatment plant.

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.

The invention relates to the technical field of environmental governance and resource recycling, in particular to a multi-source solid waste cooperative treatment system and method. The multi-source solid waste cooperative treatment system comprises a household garbage treatment system, a building garbage treatment system, an industrial solid waste treatment system and a cooperative treatment system. The household garbage treatment system, the construction garbage treatment system and the industrial solid waste treatment system are each provided with a waste classifying and sorting unit, all kinds of waste are reasonably classified and pretreated, and then the waste is subjected to cooperative treatment through the cooperative treatment system. Finally, a waste recycling system which is comprehensive in coverage, efficient in operation, standard and orderly is established, the value of various waste resources can be fully excavated, and the industrial scale and quality of resource recycling can be remarkably improved.

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.

The invention discloses a dredged soil resource utilization method and a solid waste building material product, and relates to the field of solid waste treatment. The overall water content of the material is reduced through cooperative treatment of solid waste, the property of the dredged soil is improved by using the curing agent, the activity of the dredged soil is optimized, and the treated dredged soil is applied to building material production, so that comprehensive utilization of the dredged soil is realized, and the obtained building material product has the advantages of high strength, high consumption and economic benefit and has a wide application prospect. And harmless resource utilization of the dredged soil can be realized.

The invention discloses a method for harmlessly treating hazardous waste desulfurizer by using an Ouye furnace. The method reduces sulfur in the hazardous waste desulfurizer into elemental sulfur by using the reducing atmosphere of the Ouye furnace system. The sulfur is fixed and slaged through a chemical reaction in the furnace. The slag is economically treated as a building material. The production process of the invention is stable, and the treatment volume of the waste desulfurizer is large. The discharge of secondary pollutants is eliminated, and the method has obvious environmental benefits. The coordinated treatment of the waste desulfurizer by the Ouye furnace breaks through the process limit of the traditional coordinated treatment of solid waste / hazardous waste by using a cement rotary kiln, and achieves the goal of large-scale coordinated treatment of the waste desulfurizer in the metallurgical furnace - the Ouye furnace, develops a new way to treat solid waste / hazardous waste, and achieves low cost, harmless treatment in a reducing atmosphere without generating secondary pollution of dioxins, large treatment capacity, and high-value treatment of solid waste / hazardous waste, filling the gaps at home and abroad.

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 belongs to the technical field of coal chemical industry and environmental protection, and particularly discloses a system and method for co-processing high-COD wastewater and sludge through coal water slurry gasification. The mixing and conveying unit is used for mixing the mixed liquid of the pretreatment unit with coal slurry to form homogeneous slurry; a combustion control unit; sludge and high-COD wastewater are fully mixed through the pretreatment unit, then pretreated mixed liquid and coal slurry are mixed through the mixing and conveying unit to form homogeneous slurry, finally, the homogeneous slurry is atomized and then enters the gasification furnace, oxygen is introduced into the gasification furnace, the homogeneous slurry is fully combusted, and the high-COD wastewater is obtained. Homogeneous mixing and complete combustion of the high-COD wastewater, the biochemical sludge and the coal slurry are achieved, the treatment cost of the sludge and the high-COD wastewater is reduced, meanwhile, heat values and carbon in the sludge and the high-COD wastewater are recycled, the organic wastewater treatment efficiency is effectively improved, the property of the coal water slurry is not changed, and the yield of wet gas can be guaranteed.

The invention relates to the technical field of sludge treatment and resource recycling, and discloses a sludge semi-drying and leather solid waste blending combustion system and method.The sludge semi-drying and leather solid waste blending combustion system comprises a sludge pretreatment unit, a drying unit, a leather processing solid waste pretreatment unit, a blending combustion unit and a pollutant treatment unit; the drying unit is used for drying sludge, the leather processing solid waste pretreatment unit comprises a semi-dry leather solid waste pretreatment unit and a dry leather leftover material pretreatment unit, the leather leftover material mixing unit is connected with the broken leather and dried sludge mixing unit, and the pollutant treatment unit is used for purifying the blending combustion unit. The pollutant treatment unit comprises a particulate matter treatment unit and a desulfurization and denitrification unit which are communicated with each other. According to the invention, cooperative treatment of the sludge and the leather processing solid waste is realized, the energy utilization efficiency is improved, and the treatment cost and environmental pollution are reduced.

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.

A wet purification method and device for coal oxygen-enriched fly ash melting tail gas, belonging to the field of purification technology. The high-temperature tail gas released by the coal oxygen-enriched fly ash melting furnace is cooled to below 120-150°C by a quench tower; enters the water scrubber in turn for pre-dust removal, acid removal, and cooling to below 80°C; passes through a wet electrostatic precipitator for deep dust removal; passes through an oxidation absorption tower for denitration, desulfurization, and mercury removal, and cools to 50-70°C; passes through an alkali scrubber for further deacidification, and finally the purified tail gas is discharged into a chimney through an induced draft fan; the wastewater discharged from the water scrubber and the oxidation absorption tower is purified separately to obtain metal chlorides, sulfates, and nitrates for recycling. The present invention can fully and effectively give play to the advantages of integrated coordinated treatment of deacidification, denitration, mercury removal, and dust removal, so as to achieve standard flue gas and even ultra-clean emissions; wastewater purification treatment obtains reusable salts to achieve resource utilization.

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.