64 results about "Pulp treatment" patented technology

The invention relates to the technical field of papermaking wastewater treatment, in particular to a waste pulp residue treatment device for raw paper production, which comprises waste pulp treatment equipment for raw paper production, the waste pulp treatment equipment comprises a treatment tank, and the top side of the treatment tank is provided with automatic adding equipment matched with a stirring assembly for use. And driving equipment matched with the automatic adding equipment for use is mounted on the side wall of the treatment tank. According to the waste pulp residue treatment device for raw paper production, the stroke of driving equipment is prolonged, the displacement of the sliding frame is increased, so that the sliding base is pushed to act, the lifting table is actively triggered to ascend and descend through the connecting rod, the dosing action and the stirring strength are dynamically bound, automatic dosing is achieved when the stirring requirement is high, and invalid dosing is avoided; in addition, the lifting platform drives the stirring rod to rotate and axially reciprocate, waste slurry fiber agglomerates are effectively scattered, precipitation prevention is achieved, meanwhile, longitudinal eddy current can be formed through axial reciprocating of the stirring rod, agent diffusion is enhanced, the mixing efficiency is improved, the reaction period is shortened, and energy loss is reduced.

This application provides a method for applying a plant-extracted bioenzyme to paper pulp treatment. Specifically, it involves applying plant-extracted peroxidase to the pre-bleaching delignification treatment of mechanical pulps from bamboo, reeds, and eucalyptus using H2O2. Key parameters in the treatment process, such as enzyme dosage, treatment time, and H2O2 addition, are optimized. The optimal treatment scheme is determined by measuring the total lignin and surface lignin content and fiber morphology of the treated samples. This optimal scheme is more effective in improving the fiber strength and brightness of the treated pulp compared to conventional enzyme treatment methods. Furthermore, molecular docking simulations are performed using a model of the plant-extracted peroxidase and lignin model compounds (LMCs) with different degrees of polymerization to obtain information on the interaction between the enzyme and LMCs, revealing the mechanism of action between peroxidase and lignin. This provides reliable evidence and technical reference for the feasibility of using plant-extracted peroxidase to remove surface lignin from mechanical pulp and promote subsequent H2O2 bleaching.

The utility model relates to the technical field of decorative paper production, in particular to slurry treatment equipment for decorative paper production, which comprises a mixing box, a plurality of protective covers are fixed on the outer bottom wall of the mixing box, and an air bag column is communicated and hermetically fixed on the bottom wall of the mixing box in each protective cover. Each protective cover is fixedly provided with an air guide pipe in a communicating mode, a flow dividing pipe is jointly fixed to the multiple air guide pipes, and the flow dividing pipe is fixedly provided with a ventilation pipe in a communicating mode. When the slurry mixing device is used, slurry in the mixing box can be mixed, and the plurality of air bag columns are soft, so that long fibers in the slurry cannot be broken in the mixing process, and the toughness of decorative paper subsequently processed by the slurry is further ensured.

The present application relates to wet pressing moulding technical field, specifically to a kind of plant fiber paper pulp moulding and modified starch mixed moulding tableware production process, including the present application relates to a kind of plant fiber paper pulp moulding and modified starch mixed moulding tableware production process.The process first year of age Gramineae plant fiber pulp board is carried out pulping treatment, so that it has reasonable fiber knapping degree, then mixed configuration and dispense pulp concentration, during applying fluoride-free oil-proof agent to improve pulp quality.After uniform stirring continuously, prevent pulp fiber deposition, pulp is injected into forming mould, plant fiber is evenly distributed by vacuum effect, while excess moisture is backflowed, reaches about 70% moisture content.The process improves the stiffness of product by spraying process technology, which can be increased by 57% at most.The application of modified starch spraying surface process also avoids the problems of sizing filterability, blocking and sticking in pulp.The application of modified starch greatly improves the production efficiency of product.

The invention belongs to the technical field of wolframite flotation tailing sedimentation, and particularly relates to a wolframite tailing pulp treatment method which comprises the following steps that when the temperature is larger than or equal to 10 DEG C, a polyaluminum chloride solution is prepared; when the temperature is greater than or equal to 15 DEG C, preparing a polyacrylamide solution; then adding the polyaluminum chloride solution into the wolframite tailing pulp with the benzhydroxamic acid concentration of (5 + x) mg / L, uniformly stirring, then adding the polyacrylamide solution, uniformly stirring, and then carrying out flocculating settling; wherein the adding amount of the polyaluminum chloride in each cubic meter of the wolframite tailing pulp is (150 + 10x) g, the adding amount of the polyacrylamide in each cubic meter of the wolframite tailing pulp is (70 + 2x) g, and x is more than or equal to 0 and less than or equal to 5. According to the technical scheme, the dosage of the flocculating agent can be effectively reduced, and the tailing pulp treatment cost is reduced; loss of wolframite metal products during recycling of overflow water is effectively reduced; the settling rate of suspended matters is obviously improved, the content of the suspended matters in the overflow water is effectively reduced, and the muddy flow of the thickening pool is avoided.

The invention provides a high-performance insulating ultrathin vulcanized fiber paperboard preparation device and process, and relates to the technical field of fiber paperboard preparation, the high-performance insulating ultrathin vulcanized fiber paperboard preparation device comprises a plurality of fixed supporting legs, and the fixed supporting legs are fixedly connected to the lower end face of a repulping tank; the fixed plate is fixedly connected to the inner side of the upper end of the pulping tank body; the plurality of fixed side columns are fixedly connected to the inner side of the pulping tank body; the fixed bottom plate is fixedly connected to the inner sides of the multiple fixed supporting legs, and the problems that in the material repulping treatment stage of an existing ultra-thin vulcanized fiber paperboard preparation device, low-concentration repulping and high-concentration repulping need to be completed through different devices, and in the actual production process, in order to meet the requirements of repulping of different concentrations, the repulping efficiency is greatly improved are solved. The problems that in the prior art, various special pulping devices have to be purchased, the device purchasing and maintaining cost is increased, more space resources are occupied are solved, the using cost is reduced, and occupied space resources are reduced.

The invention discloses a paper pulp treatment device for corrugated paper production, and belongs to the technical field of paper pulp treatment. A paper pulp processing device for corrugated paper production comprises a preparation assembly used for mixing initial paper pulp and steam, a coarse grinding assembly used for coarse grinding of the initial paper pulp and a fine grinding assembly used for fine grinding of the coarse grinding paper pulp, and further comprises a buffering assembly arranged between the coarse grinding assembly and the fine grinding assembly. The buffer assembly is used for carrying out buffer storage and scattering on paper pulp subjected to coarse grinding, the coarse grinding assembly comprises a first compensation assembly, and the fine grinding assembly comprises a second compensation assembly; according to the invention, dynamic compensation can be respectively carried out on the grinding discs of the coarse grinding assembly and the fine grinding assembly through the arranged compensation assembly, and the problem that the grinding effect is influenced by gap increase caused by grinding surface abrasion is avoided, so that the problem that grinding does not reach the standard due to the gap increase after the grinding surface is abraded in the prior art is solved.

The utility model discloses a pulp mixing device of a mixed pulp disc mill. The pulp mixing device comprises an incoming material end, an incoming material signal identification assembly, a repulping assembly, a high-concentration slag removal assembly, an electromagnetic reversing assembly, a first paper pulp treatment pipeline, a second paper pulp treatment pipeline, a third paper pulp treatment pipeline, a surface layer mixing pool and a surface layer pulp forming pool, the bottom of the pulping assembly is communicated with a feeding port of the high-concentration slag removal assembly, the electromagnetic reversing assembly is arranged on an accepted pulp port of the high-concentration slag removal assembly, and the first paper pulp treatment pipeline, the second paper pulp treatment pipeline and the third paper pulp treatment pipeline are all communicated with the electromagnetic reversing assembly; the first paper pulp processing pipeline, the second paper pulp processing pipeline and the third paper pulp processing pipeline are used for conducting defibering and disc grinding on fibers with different lengths respectively, so that paper pulp with fibers with the same length is produced, the proper beating degree of finished pulp is achieved, produced paper is good in smoothness, and the quality is improved.

The invention provides a method for producing high-bulk and thick kitchen paper by adopting bamboo pulp, and belongs to the technical field of papermaking, and the method comprises the following steps: S1, feeding bamboo pulp fibers into a pulping machine for pulping treatment to obtain pretreated pulp; s2, diluting the pretreated pulp with white water in a pre-papermaking pulp tank, and adding a wet strength agent to obtain finished pulp; s3, spraying the finished pulp to an included angle area of a forming net and a blanket, and then forming a wet paper sheet after extrusion dehydration of the forming net and the blanket, suction dehydration of a vacuum suction roller, shoe type press dehydration and ultrahigh vacuum shaping dehydration; s4, the wet paper sheet is sequentially subjected to high-temperature gas hood recovery hot air penetration, a drying cylinder and high-temperature gas hood hot air drying treatment, and paper is formed; and S5, wrinkling the dried paper by using a scraper, scraping the wrinkled paper away from the drying cylinder, and winding the wrinkled paper into a mother roll after the wrinkled paper enters a winding part through an arc-shaped roller, so as to obtain the kitchen paper. The kitchen paper is produced from 100% bamboo pulp or full bamboo pulp raw materials, and is high in bulk, good in water absorption and excellent in softness.

The present application relates to the technical field of papermaking equipment, and discloses an environment-friendly papermaking equipment and a papermaking process thereof, which comprises an equipment shell, a detachable cover body is arranged on the top of the equipment shell, a pulp inlet is arranged on the cover body, a pulp filtering mechanism is arranged on the upper portion of the equipment shell, a multi-stage adjusting type grinding mechanism is arranged on the middle upper portion of the equipment shell and connected with the pulp filtering mechanism, a multi-directional pulp mixing mechanism is arranged on the middle portion of the equipment shell, a cyclone mechanism is arranged on the lower portion of the equipment shell, a pulp outlet is arranged on the bottom of the equipment shell, a driving mechanism is arranged on the bottom of the equipment shell, the driving mechanism is drivingly connected with the cyclone mechanism and the multi-directional pulp mixing mechanism, and the driving mechanism is drivingly connected with the multi-stage adjusting type grinding mechanism through a linkage mechanism. The present application has the advantages of compact structure, low energy consumption, energy saving and environmental protection, and good pulp treatment effect.

The invention belongs to the technical field of cellulose, and particularly relates to type II bacterial cellulose slurry as well as a preparation method and application thereof. Compared with the prior art, the preparation method has the advantages that the bacterial cellulose gel is modified to be converted into a cellulose type II from a cellulose type I, the stacking structure and the hydrophilic performance of a bacterial cellulose molecular chain are changed, and the bacterial cellulose pulp from the nanometer level to the millimeter level is further obtained through pulping treatment; the product is milky white, odorless, tasteless, controllable in granularity and adjustable in hydrophilic performance, can be quickly dispersed after being added with water and stirred, and can be applied to the fields of preparation of degradable materials, reinforcement of composite materials, papermaking and packaging industry, biomedicine and health, daily chemical industry, cosmetics and the like; and the preparation method greatly reduces the dosage of the poor alkali solvent and the recovery energy consumption, is simple in process, does not need special equipment, and is green and environment-friendly.

The invention provides a manufacturing method of a high-performance corrugated board, which comprises the following steps of: crushing a waste paper raw material into coarse pulp, performing wet classification on the coarse pulp by adopting screening equipment, and separating out long fiber pulp with the average fiber length of more than or equal to 50mm and short fiber pulp with the average fiber length of less than 50mm; carrying out light pulping treatment on the separated long fiber pulp; adding a reinforcing adhesive into the pretreated long fiber slurry while stirring to prepare core layer slurry; adding a functional auxiliary agent into the obtained short fiber slurry to prepare surface layer slurry; conveying the prepared core layer slurry to a corrugated forming machine, and coating a layer of adhesive glue on the surface of a corrugated peak of a formed corrugated core layer; the paper surface layers are attached to the upper surface and the lower surface of the treated corrugated core layer respectively, a wet paperboard blank is formed, and a multi-section variable-line-pressure squeezing technology is adopted for dewatering and shaping; and the wet paperboard blank is dried. The technical problems that a traditional corrugated board is low in strength and consumables are wasted are solved.

The utility model discloses a convenient to clean's net front centrifugal screen, including base, the base is fixed with the box, the inside rotation of box is equipped with centrifugal cylinder, the upper end opening of box is equipped with the filter box for carrying out the filtration to the paper pulp to the top of box, the filter box is equipped with the funnel shape's feeding opening of penetration, be equipped with the filter mechanism in the feeding opening, the filter mechanism includes the filter screen of detachable setting in the feeding opening, compared with prior art, the utility model has the beneficial effects that: the utility model discloses a convenient to clean's net front centrifugal screen through design detachable filter screen and lifting mechanism cooperation, effectively avoided the paper pulp waste and greatly simplified the cleaning process of centrifugal cylinder and screen cloth, and the design of the crushing knife and the scraper is combined, not only improves the filtration effect of the paper pulp, but also prevents the filter screen from being blocked, the overall optimization paper pulp processing efficiency and quality, reduces the maintenance cost.

The invention discloses ultralow-gram-weight environment-friendly composite kraft paper and a preparation method thereof, and the preparation method comprises the following steps: (1) raw material preparation: in parts by weight, wood pulp accounts for 40%-45% of the raw materials, and kraft paper regenerated pulp accounts for 55%-60% of the raw materials; (2) slurry treatment: adding a chemical additive into the mixed slurry obtained in the step (1), and uniformly stirring to obtain slurry to be put on a net; (3) forming a net part: feeding the to-be-meshed pulp into the net part of a double-net paper machine; (4) squeezing: feeding the wet paper web formed by the net part into a squeezing part, and sequentially squeezing the wet paper web through a first squeezing roller, a second squeezing roller and a third squeezing roller; (5) drying; (6) surface sizing treatment; and (7) coiling and forming to obtain the environment-friendly composite kraft paper with ultralow gram weight. According to the technical scheme provided by the invention, the ratio of the ultra-low gram weight kraft paper pulp is greatly reduced, but the strength still meets the packaging scene use requirements of chemical fertilizers, cement and other industrial woven bags, so that the purposes of environmental protection, cost reduction and efficiency improvement are achieved.

The invention discloses a comprehensive utilization method of white water. The method comprises the following steps: making paper for daily use and generating first white water; the non-woven fabric is produced, and second white water is generated; filtering the first white water to obtain first clear white water, and filtering the second white water to obtain second clear white water; spraying at least one part of the first clear white water serving as spraying water to a forming net used in non-woven fabric production; at least one part of the second clear white water is used for pulp dispersing treatment or pulp preparing treatment in the production of the household paper, the first white water in the production process of the household paper with the high chemical content is used for spraying in the production process of the non-woven fabric, and the second white water in the production process of the non-woven fabric with the low chemical content is used for pulp dispersing and pulp preparing. And meanwhile, the water consumption in the production process of the white water and the white water can be balanced, so that the clean water consumption in the whole production system is reduced.

The invention belongs to the technical field of development of natural biomass degradable film materials, and particularly relates to a preparation method of a high-performance corn straw fiber-based mulching film material.The preparation method comprises the steps that corn straw is pretreated with a urea solution, washed with water, dried, soaked with water and then subjected to defibrination treatment and pulping treatment, and the high-performance corn straw fiber-based mulching film material is obtained; the high-performance corn straw fiber-based mulching film material is prepared from corn straw as a main raw material, a reagent in the treatment process is a weak-base low-toxicity reagent, and the high-performance corn straw fiber-based mulching film material is prepared from corn straw as a main raw material. The high-performance corn straw fiber-based mulching film material has the advantages that the high-value utilization of corn straw resources is realized, and meanwhile, the prepared high-performance corn straw fiber-based mulching film material also has a relatively short degradation period, is basically non-toxic to crop growth and soil, also has a certain weed suppression function due to light resistance, and has good application potential in the field of subsequent planting of field economic crops.

The utility model relates to ore pulp mother liquor separation equipment and belongs to the technical field of ore pulp treatment. Comprising an equipment body which forms a cavity; the flow stabilizing assembly is arranged in the cavity in a sliding mode; the cavity is divided into a first cavity body and a second cavity body which are independent from each other by the flow stabilizing assembly; the first cavity is connected with a liquid inlet assembly; the flow stabilizing assembly floats along the axis of the equipment body under the control of the liquid level height of the mother liquid in the first cavity; the second cavity is provided with an air pressure control assembly, the air pressure control assembly is configured to release air in the second cavity, and the air release flow Q is in negative correlation with the pressure P in the second cavity; and the ultrasonic assembly is arranged at the bottom of the equipment body. Under the condition of high liquid level, the flow stabilizing assembly can more effectively inhibit the fluctuation of the liquid level, so that the mother liquor separation process is stable and efficient, and the problem of poor separation effect caused by the fluctuation of the liquid level due to ultrasonic waves in the prior art is solved.

A base plate for a pulp processing unit includes a plate having an upper axial surface, a lower axial surface, and a plurality of openings extending through the plate from the upper axial surface to the lower axial surface. Each of the plurality of openings has a shape, a size, and an angle. The shape is a cross-sectional shape, a size equal to a maximum cross-sectional dimension, and the angle is an angle formed between a center line of each of the plurality of openings and an axial line parallel to a center axis of the base plate. The shape, size, orientation of shape, angle, or combination thereof of the plurality of openings varies depending on the position of the openings on the base plate. The invention further discloses a paper pulp processing unit comprising the bottom plate.

The utility model relates to a degradable composite paper board blank suitable for carton processing, which comprises a base layer straw paperboard, a bamboo fiber layer is distributed on the base layer straw paperboard, a polylactic acid film layer is distributed on the bamboo fiber layer, a starch-based waterproof layer is coated on the polylactic acid film layer, and the starch-based waterproof layer is coated on the starch-based waterproof layer. Adhesive layers are distributed among the base layer straw paperboard, the bamboo fiber layer and the polylactic acid film layer to form a composite laminate structure, the base layer straw paperboard is of a honeycomb composite structure, and the bamboo fiber layer is a net-shaped laminate formed by weaving a plurality of bamboo fiber strips in a crossed mode. Therefore, the configuration of almost full degradation can be realized, after the whole paper box is degraded, the effective degradation within 180 days can be met, and the pulping treatment requirement after the finished paper box is discarded is met. The whole material is mainly made of plant base materials, and the environment-friendly requirement in the manufacturing period is met. And after being processed into the paper box, the paper box can meet the daily supporting and using requirements of the paper box.

The application discloses a chemical precipitation method using magnesium oxide and a metal hydroxide product, and the chemical precipitation method comprises the following steps: S1, obtaining a pre-reaction solution capable of being used for a precipitation reaction, and obtaining a pulp solution containing ions of a target metal in the pre-reaction solution; S2, mixing magnesium oxide powder and the pulp solution, and obtaining a first slurry through a pulp treatment; and S3, putting the first slurry into a reactor to perform a precipitation reaction, and generating a precipitated slurry containing a metal hydroxide of the target metal. In the magnesium oxide powder, a first part of the magnesium oxide powder has a higher average activity than that of the whole magnesium oxide powder. The method is used to solve the problem of serious activity attenuation of the magnesium oxide slurry, improve the precipitation efficiency of the target metal in the precipitation reaction, increase the content of the target metal in the metal hydroxide product, and reduce the single consumption of the magnesium oxide and the content of magnesium impurities in the product.

The present invention provides an oral pulp cleaning and treatment method and a pulp treatment system thereof, which relate to the technical field of the oral industry, including: fusing multimodal images such as CBCT and OCT to construct a four-dimensional risk model to guide path planning; performing adaptive and precise debridement under closed-loop feedback of multiple sensors such as pressure, acoustics, and chemistry; designing and 3D printing personalized restorations that are compatible with biomechanics through topological optimization algorithms; and finally achieving long-term stability monitoring and early failure warning of affected teeth through implantable passive sensors. The present invention also discloses an intelligent processing system for implementing this method. Through an integrated intelligent processing process, the present invention significantly improves the safety, success rate, and long-term survival rate of complex root canal treatments.

The present invention discloses a pulp processing device for producing boxboard, which relates to the technical field of papermaking production. The device comprises a soaking box, one side of the soaking box is concave to form a beating cylinder, the outer side of the beating cylinder is provided with a discharge valve, a beating assembly is provided in the beating cylinder, a kneading basin is fixedly installed inside the soaking box, a lifting seat is provided above the kneading basin and the lifting seat is lifted and lowered by a lifting driver, a pressure rod is rotatably installed inside the lifting seat, and a kneading head is installed at the bottom end of the pressure rod. The present invention uses an inclined guide rod to guide the rack rod in an inclined manner, so that the rack rod moves laterally while following the lifting and lowering of the lifting seat, and drives the kneading head to rotate while lifting and lowering, kneading the shredded paper soaked in the kneading basin to form a thicker pulp, and the pulp flows to the beating cylinder to be beaten by the beating assembly, thereby improving the processing efficiency of the pulp, enhancing the processing quality of the pulp, and improving the quality of the boxboard finally produced.

The present application relates to the technical field of lithium residue treatment, and particularly relates to a comprehensive recycling method of lithium residue. The method comprises the following steps: performing pulp treatment on the lithium residue to obtain a suspension; performing grading treatment on the suspension to obtain coarse-grained lithium residue and fine-grained lithium residue; performing lithium flotation treatment on the coarse-grained lithium residue to obtain lithium concentrate and primary flotation tailings; performing grinding treatment on the primary flotation tailings to obtain grinding material; mixing the grinding material and the fine-grained lithium residue, and then performing weak magnetic separation treatment to obtain iron concentrate and tailings after weak magnetic separation; performing strong magnetic separation treatment on the tailings after weak magnetic separation to obtain weak magnetic material and tailings after strong magnetic separation; performing gravity separation treatment on the weak magnetic material to obtain tantalum-niobium concentrate and iron-rich material; and performing sulfur flotation treatment on the tailings after strong magnetic separation to obtain silicon-aluminum powder and gypsum. The present application provides a comprehensive recycling method of lithium residue, which recycles lithium concentrate and tantalum-niobium under grading treatment, and the products have high grade and recovery rate, and efficient comprehensive recycling of lithium residue is realized.

The utility model relates to the technical field of pulping treatment, in particular to a slag removal system of a paper machine. Comprising a water tank communicated with five sections of slag slurry pipes, a dilution assembly is arranged at the lower end in the water tank and communicated with a clear filtrate pipe, a high-pressure pump is installed on the clear filtrate pipe, an outlet of the water tank is communicated with an outlet pipe, the outlet pipe is communicated with an inlet of a slag separator, the clear filtrate pipe is communicated with an inlet pipe, and the inlet pipe is communicated with a flushing pipeline of the slag separator. A pulp outlet pipe of the slag separator is communicated with the pulp flowing box, and a slag outlet pipe of the slag separator is communicated with the jumping screen. According to the system, the residue pulp of the fifth residue removal section is placed in the water tank to be stored, the residue remover is additionally arranged to remove residues of the residue pulp in the water tank, accepted pulp discharged by the residue remover enters the papermaking system, and pulp residues discharged by the residue remover are further subjected to liquid removal through the jumping screen, so that the pulp residues are conveniently analyzed, and the working state of the impurity removal section of the pulping system is judged.

The utility model relates to an ore pulp separation detection tank, and relates to the technical field of ore pulp treatment, the ore pulp separation detection tank comprises a tank body, a discharge pipe and a water outlet pipe, the discharge pipe is used for discharging solids of a deposition layer in the tank body, the water outlet pipe is used for discharging liquid of a clear water layer in the tank body, and a detection assembly used for detecting the water clarity degree is arranged in the tank body; a flocculating agent pipe for inputting a flocculating agent into the tank body is arranged at the upper end of the tank body, a mounting plate is arranged at the upper end of the tank body, a frequency converter connected with the detection assembly is arranged at the lower end of the mounting plate, and the frequency converter is used for controlling the adding amount of the flocculating agent according to a detection result of the detection assembly. The method has the effects of simplifying operation and saving manpower.

The invention discloses a paper pulp feeding device for paper pulp molding production, and relates to the technical field of equipment for paper pulp molding production and processing. The pulping device comprises a feeding block, and a pulping mechanism is arranged in the feeding block. Paper pulp fibers are further crushed through the pulp grinding mechanism, roughly-machined paper pulp is conveyed into the feeding block through a first flange, a feeding pipe, a connecting pipe and air pressure, an output shaft and a driven rod are driven by a driving motor to rotate, so that the driven block rotates along with the driven rod, and when the driven block rotates, the driven block is driven to rotate. A driven block drives a movable cutter to be periodically attached to a fixed cutter, through the arrangement of the mechanism, the problem that paper pulp is deposited in the device is effectively avoided, the effect of stirring the paper pulp can be achieved, the stability of the device during use is improved, the maintenance frequency is reduced, paper pulp fibers can be cut up when the device feeds the paper pulp, and the paper pulp is more stable. The quality of paper pulp molding is improved, and the paper pulp processing steps are optimized.

This invention relates to a papermaking process for cultural paper, and relates to the technical field of papermaking. The process includes initial pulp preparation, pulp treatment, papermaking, and post-treatment steps. By using softwood pulp and poplar mechanical pulp to establish a fiber skeleton, and using chitosan grafted with acrylamide-maleic anhydride copolymer to enhance fiber bonding, a stable wet-end chemical environment is established to ensure efficient retention of fillers. This application achieves high ash content and high bulk while improving paper strength, resulting in cultural paper with good surface integrity and stable physical properties.

The invention provides a copper ore middling reselection flotation process, and relates to the technical field of ore pulp treatment, the copper ore middling reselection flotation process comprises the following steps: S1, copper ore middling ore pulp is guided into a flotation column for flotation, primary foam and primary ore pulp are obtained through flotation, and the primary ore pulp is guided into an intermediate storage device along a first material guide pipeline for storage; s2, the secondary ore pulp is guided into a flotation machine along a second material guiding pipeline for flotation, and secondary foam and secondary ore pulp are obtained; wherein the circulation rate in the second material guide pipeline is increased to increase the primary ore pulp flowing into the flotation machine, and the circulation rate in the second material guide pipeline is reduced to reduce the primary ore pulp flowing into the flotation machine; the circulation rate in the second material guide pipeline is reduced for a long time, and the second end of the diversion sampling device is controlled to periodically move up and down in the middle storage device to realize uniform material guide. Waste of middling resources can be reduced, the recovery rate of copper metal is increased, and tailings loss is reduced.

The utility model discloses a corrugated board processing waste treatment device which comprises a bottom plate, fixing frames are fixedly connected to the two sides of the top of the bottom plate, and sleeves are rotationally connected to the interiors of the fixing frames. The fixing frames are arranged on the two sides of the top of the bottom plate, the sleeves are rotationally connected into the fixing frames, the first bevel gears are sleeved with the fixing frames, and the fixing frames are meshed with the second bevel gears, so that threaded rods in threaded connection with the sleeves can drive the treatment barrel to achieve height adjustment, floating waste can be effectively pressed into water through the movable frame and the pressing plate frame, and the soaking effect is improved; and through cooperation of a cylinder, a cover plate, a cutting rod and a first motor, the soaked waste can be fully cut and smashed into paper pulp, the bottom of the treatment cylinder communicates with a discharging valve so that the paper pulp can be conveniently discharged and collected, the device is good in treatment effect, the space occupied by the waste can be effectively reduced, efficient treatment of the corrugated board machining waste can be conveniently achieved, and the practicability is high. The device has the advantages of convenience in use and good treatment effect.

The invention belongs to the technical field of perovskite solar cells, and particularly relates to a preparation method and application of alpha-phase FAPbI3 crystallis.The preparation method comprises the steps that a divalent lead source, formamidine hydriodate, hydriodic acid and hypophosphorous acid react at the room temperature in a water phase environment, and a delta-phase FAPbI3 crude product is obtained after filtering; then, the crude product is sequentially subjected to washing, anti-solvent extraction and pulping treatment, and a delta-phase FAPbI3 purified product is obtained; and finally, the delta-phase FAPbI3 purified product is subjected to annealing treatment, so that the delta phase is converted into an alpha phase, and the high-purity alpha-phase FAPbI3 microcrystal is obtained. The invention provides a preparation scheme of the alpha-phase FAPbI3 microcrystal which is simple in process, low in cost and easy for large-scale production, and the alpha-phase FAPbI3 microcrystal has a wide application prospect in photoelectric devices such as solar cells and the like.