155 results about "Co-processing" patented technology

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 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 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.

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 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 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.

This invention discloses a method for the co-treatment of semi-coke wastewater and medicinal residue, comprising: mixing and soaking the semi-coke wastewater and medicinal residue, and aging the mixture; pressing the aged mixture dry to achieve solid-liquid separation; mixing the separated solids into raw coal for coking; and subjecting the separated liquid to biochemical degradation treatment. This invention solves many problems existing in current semi-coke wastewater treatment methods, opens up broad pathways for the harmless application of medicinal residue, and achieves the effect of treating waste with waste. This invention is an innovative cross-industry collaboration with comprehensive improvements in energy and environmental protection.

The invention discloses a tunnel kiln calcination co-processing and recycling system and method based on multi-element solid waste coupling fuel, and relates to the technical field of resource recycling, the tunnel kiln calcination co-processing and recycling system comprises a pretreatment unit, a coupling dehydration and forming unit, a drying calcination and energy recovery unit and an ash recycling and agricultural closed loop unit. According to the tunnel kiln calcination co-processing and recycling system and method based on the multi-element solid waste coupling fuel, the coupling ratio of multi-element solid waste is scientifically designed, the fuel performance is improved by means of physical and chemical property complementarity, the tunnel kiln combustion requirement is met, energy consumption is reduced, efficiency is improved, and low-cost large-scale production is achieved; the tunnel kiln combustion and waste heat recovery system is cooperatively designed, the heat energy utilization efficiency is improved, energy waste is reduced, a closed-loop system of industrial solid waste treatment and agricultural circulation is constructed, a complete chain of solid waste treatment, soil improvement, feed production and livestock breeding is formed, the agricultural circulation connection problem is solved, and powerful support is provided for sustainable development.

The invention discloses a comprehensive recycling process of manganese resources, and relates to the technical field of industrial solid waste recycling, and the process comprises the following steps: regulating the particle size of electrolytic manganese residues by using a wet ultrafine crushing technology, and controlling the solid content of generated homogenized slurry; sulfur dioxide and the homogenized slurry are mixed and then injected into a multi-stage countercurrent absorber for a reaction, and a leaching solution is obtained; separating the leachate into a first filtrate and a manganese slag filter cake; separating the first filtrate into a manganese residue filter cake and a third filtrate; mixing the manganese slag filter cake to obtain purified slag; converting the purified slag into a recyclable raw material and a second filtrate used for a washing medium by using a refined manganese slag harmless treatment system; and converting the third filtrate into electronic-grade manganous-manganic oxide and ammonium sulfate products by using an ammonia element and a precipitator on the basis of a comprehensive resource recovery technology. According to the invention, a reduction activation-multiphase separation-cascade purification three-in-one cooperative treatment system is constructed.

The utility model relates to the technical field of sintering machines, in particular to a sintering machine gas-solid waste integrated cooperative processing device, which is characterized in that a crank rod is rotatably connected in a notched sleeve, a rectangular connecting rod is rotatably connected in the crank rod, an impact jacking block is rotatably connected at the upper end part of the rectangular connecting rod, and a screening barrel is slidably connected in the notched sleeve; the lower end of the screening barrel is fixedly connected with a hollow circular ring base, a driving motor drives a crank rod connected with the driving motor to do circular motion, a rectangular connecting rod is made to do reciprocating displacement, and under the reciprocating pulling effect of the rectangular connecting rod, a jacking block is impacted to do lifting sliding along with the rectangular connecting rod; when materials pass through the sieve plate, the hollow circular ring base can make contact with the hollow circular ring base and jack the hollow circular ring base, so that the hollow circular ring base drives the screening barrel to conduct reciprocating jacking action, the screening barrel shakes, the screening process of the waste materials is effectively accelerated, the speed of the materials passing through the sieve plate is increased, and the overall screening efficiency is improved.

The invention provides a hydraulic reclamation foundation treatment method based on cooperation of high-energy-level dynamic compaction and concrete pipe piles, and belongs to the technical field of geotechnical engineering foundation treatment. S2, layered progressive high-energy-level dynamic compaction treatment is carried out; s3, low-disturbance dry-type pneumatic hole forming is adopted; and S4, the PRC pipe pile is hammered and implanted, and a composite foundation is formed. According to the method, the gradient stiffness dynamic compaction layer and the low-disturbance PRC pipe pile are subjected to cooperative treatment, and integrated efficient improvement of a soil shallow layer and a deep base is achieved; a dry-type pneumatic pore-forming technology is adopted, the soil disturbance rate is controlled within 5%, and the disturbance problem of a traditional pore-forming technology on a pretreated soil body is effectively solved; the mechanical property of the hammering implanting technology is matched with that of the PRC pipe pile, it is precisely guaranteed that the pile end enters a bearing stratum through penetration control, meanwhile, the pile-soil interaction is enhanced, collaborative optimization of high crack resistance, high ductility and high durability is achieved through the mixed reinforcement design of the PRC pipe pile, and the PRC pipe pile is suitable for the special environment of coastal dredger fill.

The invention discloses a biomass gasification tar cooperative processing system and method.The system comprises a tar trapping unit, a supercritical conversion unit, a product separation unit, a methanol storage tank, a hydrocarbon product storage tank and an intelligent cooperative control unit, and a dynamic balance model is preset in the intelligent cooperative control unit; the electric field intensity of the electrostatic spraying device, the stirring rotating speed of the magnetic driving stirrer, the reaction pressure in the conversion reaction kettle and the opening and closing of the inerting protection device, the flow interlocking valve and the safety release valve are controlled to form dynamic balance and safety protection; and the preheater recovers supercritical reaction waste heat for preheating methanol, so that the energy consumption is reduced. According to the invention, closed loop of trapping, conversion and resource recovery of biomass gasification tar is realized, the tar is turned into wealth, and the problems that trapping and conversion are separated, operation conditions cannot be self-adaptive, energy consumption is high and safety risks are isolated are solved.

The invention discloses a foundry waste gas particulate matter trapping and waste heat recovery co-processing device, and belongs to the technical field of waste gas processing devices.The foundry waste gas particulate matter trapping and waste heat recovery co-processing device comprises a waste heat recovery mechanism, the waste heat recovery mechanism comprises a box with air inlets formed in the two ends, and a draught fan is fixedly installed at the center of the bottom of the inner wall of the box; an inclined plate arranged on the side wall of the box body is arranged over the draught fan, a vertical plate is integrally formed and connected to the position, close to the center of the box body, of one end of the inclined plate, one side of the vertical plate is connected with a slope surface, and a first rotating shaft and a second rotating shaft which are arranged on the two sides of the inner wall of the box body are arranged between the vertical plate and the pipeline air outlet; the first rotating shaft and the second rotating shaft are each provided with a baffle connected with airflow. The technical problems that waste gas particles cannot make full contact with the filter plate, the filter plate needs to be cleaned or replaced regularly, operation is inconvenient, and the filtering effect is easily affected when the filter plate is not cleaned in time can be solved.

The invention relates to the technical field of garbage treatment and separation equipment, in particular to a separation device for garbage resourceful treatment, which comprises a base plate, a crushing part, a filtering bottom cylinder part, a water adding cover part, a sliding material receiving part and a water-oil separator. The kitchen garbage is sequentially subjected to continuous cooperative treatment of crushing and scattering of the crushing cutter, secondary cutting of the edge of the side tooth cutter and relative grinding and refining of the upper grinding disc and the lower grinding disc in the same crushing part, the crushing process and the grinding process are matched with each other and are in ordered transition, high-fiber, hard particles and other components difficult to treat in the kitchen garbage can be fully refined, and the kitchen garbage can be fully crushed. And the uniformity and fluidity of waste slurry are remarkably improved, multi-stage collaborative crushing and fine grinding are achieved, the homogenization degree of waste treatment is remarkably improved, and a stable and reliable pretreatment basis is provided for subsequent solid-liquid separation and resource utilization of the filtering bottom cylinder part.

The production device comprises a processing cylinder, a pretreatment mechanism and a crusher, a discharge port is formed in the outer circumferential side of one end of the processing cylinder, the crusher is arranged at the end, away from the discharge port, of the processing cylinder and communicates with the processing cylinder, and the pretreatment mechanism comprises a plugging assembly, a first driving assembly and a processing assembly; the blocking and discharging assembly is arranged on the machining cylinder and located on the outer side of the discharging port, and the machining assembly is rotationally connected into the machining cylinder through the first driving assembly. Therefore, the integrated closed barrel structure is adopted, the crushing, grinding and mixing procedures are integrated, continuous cooperative treatment and smooth and controllable discharging of materials are achieved, the problems that traditional sectional equipment is difficult in cooperative control, easy to block during discharging and prone to dust pollution are solved, and the production efficiency and the product homogeneity are remarkably improved.

The invention discloses a recycling and harmless cooperative treatment method for iron resources in cyanidation tailings, which adopts a closed-loop process of stage magnetic separation, fluidized roasting, cooperative purification of tail gas and recycling of tailings, and basically comprises the following steps: pretreatment of raw materials, stage magnetic separation, fluidized roasting, cooperative treatment of waste gas and treatment of tailings. Wherein the staged magnetic separation adopts two-stage magnetic separation and controls the ore grinding fineness, the temperature, the CO concentration and the air flow are accurately controlled through fluidized roasting, waste gas is treated through an inconel process system, and tailings are used for preparing building materials or filling. Compared with a traditional process, the iron recovery rate is increased by 20% or above, the cyanide content of roasted iron ore concentrate is lower than 5 mg / kg, the sulfur content is lower than 0.5%, the environment and economy win-win situation is achieved, and the method is suitable for large-scale treatment of cyanidation tailings in the gold smelting industry.

This invention discloses a device and method for the co-processing of tailings and waste rock, backfilling and compaction, and in-situ quality testing, belonging to the field of resource utilization of mining solid waste. Tailings, waste rock, and large particulate waste are weighed and then enter a screening, dewatering, and water treatment and recycling system III. After dewatering, the tailings enter a tailings and solidifying agent mixing system IV, where it is mixed with one or more solidifying agents and / or reinforcing materials transported by a solidifying agent storage system V to form a slurry. The slurry enters a slurry backfilling bin through a silo conveying port and a slurry input channel. After being stirred again in the backfilling bin, it is guided and shaped by a plastic sheet and compacted by a walking compaction wheel. The screened waste rock enters a five-stage waste rock grading screening bin. The in-situ quality testing system samples and tests the strength of the backfilled and compacted area. This invention achieves integrated continuous operation of tailings and waste rock weighing and batching, screening and dewatering, solidification and mixing, slurry backfilling and shaping, waste rock damming, tailwater reuse for dust suppression, and backfill quality testing.

The invention discloses a collaborative purification system and method for carbon product roasting flue gas and desulfurization wastewater. The system comprises a wastewater supply and evaporation unit, a crystal salt adsorption and purification unit and a flue gas supply unit which are connected through pipelines. The method comprises the following steps: pre-treated desulfurization wastewater is atomized and sprayed into a full-evaporation spray cooling tower to be in direct contact with high-temperature roasting flue gas for evaporation, water vapor returns to a desulfurization system, generated micron-sized crystal salt enters an adsorption reactor along with the flue gas and is captured by a special adsorbent, and asphalt smoke in the flue gas is synergistically removed; and finally, gas-solid separation is realized through the bag type dust collector. According to the invention, waste is treated by waste, cooperative treatment of desulfurization wastewater zero discharge and flue gas purification is realized, the problem of crystalline salt trapping is solved, and the method has the remarkable advantages of high efficiency, economy and safety.

The invention discloses a method and a system for eliminating dust fog and improving visibility of a coal mine driving working face. The method comprises the following steps: performing air flow sealing control and primary purification at a tunneling dust production source through an onboard source control dust falling unit to generate an air flow containing fine particles and moisture; micron and submicron particles are deeply removed through the fine filtering unit, and high-humidity low-dust airflow is generated; liquid water is separated out through the condensation dehumidification unit, the temperature is adjusted, and clean low-humidity airflow is output. The system comprises an airborne source control dust fall unit, a fine filtering unit, a condensation dehumidification unit and a control module which work cooperatively, and environment parameters are dynamically monitored and adjusted. Through multi-stage cooperative treatment, dust diffusion is effectively controlled, fine particles are removed, humidity is reduced, haze is eliminated, roadway visibility and operation safety are improved, and the device is suitable for high-temperature and high-humidity complex environments and is suitable for coal mine and tunneling engineering.