47 results about "Disc mill" patented technology

The utility model discloses a broken paper disc mill switching management system which comprises a broken paper disc mill workshop and a core pulp disc mill workshop, two broken paper grinding discs are arranged in the broken paper disc mill workshop, and a broken paper feeding control valve for controlling feeding on-off is arranged on a feeding pipeline of each broken paper grinding disc. A first switching control valve and a second switching control valve are respectively connected between the feeding pipelines and the discharging pipelines of the two broken paper grinding discs through pipelines; a core pulp disc mill is arranged in the core pulp disc mill workshop, and a branch material distributing pipeline and a branch material returning pipeline which are used for conveying broke pulp to a disc mill at a material inlet and a material outlet of the core pulp disc mill when one of the two broke millstones is maintained are connected in series on a pipeline between the first switching control valve and the second switching control valve in a branch manner; a third switching control valve is connected between the branch material distributing pipeline and the branch material returning pipeline through a pipeline; through the control valve, switching replacement between the broken paper disc mill and the core pulp disc mill in broken paper processing is achieved.

The invention discloses a production method for reducing the proportion of long fibers of cream base paper, and belongs to the field of papermaking. The main technical scheme is as follows: raw materials comprise long fibers (one or more of cotton pulp, softwood pulp and bamboo pulp which are subjected to repulping and are ground by two serially connected disc mills until the beating degree is 25-35 degrees SR and the wet weight is 8.0-13.0 g), short fibers (hardwood pulp which is subjected to repulping and defibering and the beating degree is 15-20 degrees SR) and broken paper (subjected to repulping and defibering); adjusting the flow, mixing the three components according to the mass ratio of (8-20): (85-70): (15-0) in a pulp preparation pool, and uniformly grinding until the beating degree is 25-45 degrees SR; the white water reflux quantity is regulated and controlled in the process. And after the slurry is formed by a high-speed paper machine, wrinkling by using a ceramic or carbon steel scraper under the dryness of 55-85% at the wrinkling rate of 18-25%, and coiling and slitting to obtain the cream base paper. The quantification of the raw paper is 10-20g / m < 2 >, and the transverse dry tensile index is gt; 3.0 N.m / g, and the longitudinal wet tensile index gt; 3.0 N.m / g, and the softness lt; the bulk is gt; 6.60 m < 3 > / g, and the transverse liquid absorption height gt; and 75 mm / (100s). The process is optimized, the use amount of long fibers is remarkably reduced, meanwhile, it is ensured that the cream base paper has excellent strength and bearing performance, and the cost is remarkably reduced.

The invention provides a method for extracting lithium from lepidolite through mechanical activation, and relates to the technical field of extraction of lithium from lepidolite. The method comprises the following steps: firstly, mechanically activating lepidolite concentrate in a chrome steel disc mill, and then uniformly roasting the mechanically activated concentrate and potassium-sodium mixed salt to obtain clinker; and crushing the clinker to a proper size, mixing with pure water, heating, stirring, and carrying out solid-liquid separation to obtain a lithium extraction mother solution and filter residues. According to the method, mechanical activation and potassium and sodium salt mixed roasting have a synergistic effect, and efficient extraction of lithium in the lepidolite concentrate is achieved. The method has the characteristics of high lithium ore phase conversion and high lithium leaching rate.

The invention relates to a laboratory mill for grinding material, in particular designed as a cutting mill, impact mill, disc mill, knife mill, impact mill, centrifugal mill, rotor mill, rotor high-speed mill or mortar mill, comprising: a grinding mechanism (4) with a grinding mechanism housing (6) which defines a grinding chamber (18), and with a grinding mechanism rotor (16) which is rotatably driven in the grinding chamber (18) to grind the material to be ground with the grinding mechanism rotor (16) in the grinding chamber (18), wherein the grinding mechanism housing (6) has a material filling opening (26) which leads into the grinding chamber (18) in order to introduce the material to be ground from the outside through the material filling opening (26) into the grinding chamber (18), a drive motor for driving the grinding rotor in the grinding chamber (18), a grinding material feed hopper (28) which has a grinding material feed cone (30) and a funnel neck (32), wherein the grinding material feed hopper (28) is attached to the laboratory mill and the funnel neck (32) opens into the grinding material feed opening (26), such that the grinding material can be filled into the grinding material feed cone (30) and passes through the funnel neck (32) and the grinding material feed opening (26) into the grinding chamber (18), while the grinding rotor (16) rotates in the grinding chamber, a grinding material filling plunger (40) that can be inserted into the grinding material filling hopper (28), wherein the grinding material filling plunger (40) has a grinding material filling channel (50) through which the grinding material can be filled into the grinding chamber (18) when the grinding material filling plunger (40) is inserted into the funnel neck (32).

The invention discloses a method for preparing lithium sulfide through continuous combustion, which comprises the following steps of: melting metal lithium into a liquid state, and spraying the liquid state into a combustion chamber through a spray nozzle according to a certain speed to form lithium fog drops; elemental sulfur is heated to obtain sulfur steam, and the sulfur steam is introduced into the combustion chamber through a flow meter according to a certain flow speed; the sulfur steam reacts with the lithium fog drops in the combustion chamber to generate lithium sulfide coarse powder, and the generated lithium sulfide coarse powder is settled to a collector at the bottom of the combustion chamber; conveying lithium sulfide coarse powder obtained by the reaction to a millstone type grinding machine, and grinding in a nitrogen environment to obtain powdery lithium sulfide; the powdery lithium sulfide is put into an alumina crucible and then transferred into a push plate furnace to be sintered, and the high-purity lithium sulfide is obtained.Compared with the prior art, continuous operation can be achieved, and the per capita productivity is improved by 10 times or above; heat is self-circulated, and energy consumption is reduced by more than or equal to 80 The product purity is greater than or equal to 99.9%, and the side reaction result is 0.1%; and the process is closed, free of dust leakage and environment-friendly.

The invention belongs to the technical field of ink color paste for printing and dyeing, and discloses high-dispersity dye color paste and a preparation method and application thereof.The preparation method comprises the steps that S1, grinding is conducted, specifically, dye toner is subjected to two-stage mixing and two-stage grinding treatment, disperse dye toner enters a pneumatic mixer to be mixed and enters a first-stage disc type sand mill to be ground, and the particle size of the disperse dye toner is smaller than or equal to 1200 nm; the disperse dye toner is pneumatically conveyed to a second-stage pneumatic mixer for mixing and then enters a second-stage horizontal turbine sand mill for grinding, the particle size of the disperse dye toner is smaller than or equal to 500 nm, and PDI is smaller than or equal to 0.6; s2, preparation of a dispersing agent: adding a styrene-maleic anhydride copolymer and modified polyether into a closed container, then adding an initiator, and stirring to obtain the dispersing agent; s3, slowly adding the ground disperse dye toner into the dispersing agent, continuously stirring and dispersing, and ensuring that the temperature is 30-45 DEG C to obtain mixed slurry; s4, nanometer grinding: grinding the uniformly mixed slurry in a three-stage nanometer grinding system; and S5, toning. The invention has the advantage of good dispersion performance of the dye color paste.

The invention relates to a stirring mill (1), in particular in the form of a full-volume disc mill, comprising a grinding container (2), a stirring shaft (3) rotating therein about a horizontal axis (6), the stirring shaft carrying a plurality of grinding discs (4), which are connected to the stirring shaft in a rotationally fixed manner and are spaced apart from one another in the direction of the horizontal axis (6), wherein the grinding discs (4) each have an elongated opening or hole, characterized in that the stirred mill (1) has a driver in the region between the two grinding discs (4), which driver rotates synchronously with the grinding discs (4) during the grinding process and provides a movement component in a radially outward direction for at least a portion of the grinding body in contact therewith, the driving member directly moves the grinding body when the grinding body rotates (preferably in the radial direction).

The invention discloses a preparation method of insulating slurry. The preparation method comprises the following operation steps: S1, raw material selection: selecting Chinese fir with different growth years for cutting; s2, chipping is conducted; s3, washing with water; s4, performing cooking; s5, pulp screening; s6, oxygen removal: carrying out lignin removal treatment on the paper pulp obtained in the step S5 in an oxygen and alkaline environment; s7, pulping: pulping the pulp by adopting a Varley mill or a disc mill, so that fibers are fibrillated, and the mechanical property of the pulp is enhanced; and S8, sheet making and performance detection: performing sheet making on the pulp in the S7 to form paper, performing performance detection on the prepared paper, and taking the pulp corresponding to the paper with the performance meeting the requirement as the insulating pulp. On the basis of conventional sulfate pulping, raw material selection and beating degree control are systematically researched, the provided preparation method of the insulation pulp is provided, the tearing index in the quality indexes of paper made of the prepared fir insulation pulp is not lower than 11.0 mN.m < 2 > / g, the conductivity is not higher than 3.0 ms / m, and the requirements of existing standards are met.

According to the pulping system provided by the utility model, the structure of the pulping system is improved, so that different working conditions can be quickly switched according to the difference of product strength indexes, the pulping effect is ensured, and meanwhile, the waste of energy consumption is avoided. The utility model provides a pulping system which comprises a before-beating tower, a plurality of after-beating towers, a first disc mill and a second disc mill, the first disc mill and the second disc mill are used for supplying materials to the after-beating towers, and the pulping system can be switched between a first working condition and a second working condition. Under the first working condition, the before-knocking tower, the first disc mill and the second disc mill are sequentially communicated, and the first disc mill and the second disc mill jointly supply materials to the after-knocking tower; and in the second working condition, the first disc mill and the second disc mill are both directly communicated with the before-knocking tower, and the first disc mill and the second disc mill supply materials to the corresponding after-knocking tower.

The invention discloses an environment-friendly carton forming and processing technology which comprises the following steps that plant fiber raw materials such as wheat straw, reed, straw, wood and the like are processed into paper pulp meeting requirements through a mechanical pulping method (such as a stone and wood pulp grinding method and a disc mill pulping method); the collected waste paper is subjected to crushing, cleaning, deinking, screening, impurity removal and the like, so that the waste paper can be reformed into paper pulp suitable for manufacturing cartons. According to the environment-friendly carton forming and processing technology, the filter screen plate is used for conducting impurity separation on pulp, the situation that the pulp contains excessive impurities such as wood chips and bark is avoided, and the processing and forming quality of the environment-friendly carton is improved; and excessive impurities such as wood chips and barks can be concentrated to the upper end part of the slurry filter tank along the inclined surface of the filter screen plate and concentrated into the waste box from the inclined area of the upper end part of the slurry filter tank, so that the impurities are convenient to clean.

The invention relates to the technical field of production of insulating paperboards, in particular to a pulping process for improving the production efficiency of the insulating paperboards, and solves the problems of how to improve the pulping process, so that the product has good air permeability, water vapor is easy to discharge, the drying time is short, and the production efficiency is improved. A medium-concentration pulping process is adopted, according to the pulp feeding amount, the pulping concentration and the mill power, the abrasive disc combination is reasonably selected and matched, a DDR tandem type double-disc mill PLC is adopted for constant-power pulping, infiltration treatment is added before pulping, fiber cutting is effectively reduced, the fiber length is guaranteed, the mechanical strength is high, the air permeability is good, the drying time is shortened, and the production efficiency is improved.

The utility model relates to the technical field of papermaking, in particular to a pulping device with multiple disc mills connected in series and in parallel, which comprises a control disc mill system, a first disc mill and a second disc mill are arranged on one side of a control end of the control disc mill system, and a first rotating shaft and a second rotating shaft are fixedly arranged on the first disc mill and the second disc mill respectively. One end of the second rotating shaft is arranged at the control end of the control disc mill system, and a connecting assembly is arranged between the first rotating shaft and the second rotating shaft. The number of the rotating shafts for controlling the two disc mills is two, the connecting assembly is arranged between the two rotating shafts, and the connecting rod is inserted into or far away from the through hole in the fixed ring through sliding of the sliding ring in the connecting assembly, so that the purpose of connecting and separating the two rotating shafts is achieved.

The application relates to the technical field of insulation paper dispersion, and discloses a dispersion equipment for insulation paper pulp production, which comprises a tank body used for containing insulation paper pulp to be dispersed; a primary dispersion assembly arranged in the tank body and used for rotating and disturbing high-concentration high-flocculation paper pulp flowing into the tank body so as to reduce the paper pulp concentration and break large flocculation bodies; and a secondary dispersion assembly arranged in the tank body and located downstream of the primary dispersion assembly and used for applying shearing action to the paper pulp dispersed by the primary dispersion assembly so as to depolymerize fiber flocculation bodies in the paper pulp. The dispersion equipment for insulation paper pulp production aims to solve the problems that the existing disc mill has a narrow applicable concentration range due to the limitation of the mill disc type, the dispersion effect of the paper pulp with too heavy flocculation is poor, and the paper pulp with different concentrations and different flocculation degrees cannot be efficiently and uniformly dispersed in industrialized production.

This invention relates to the field of pulp and paper technology, specifically a method for recycling chemimechanical pulp residue. The method includes the following steps: S1: Pre-treating the chemimechanical pulp residue by separating wood chips, wood strips, and wood dust according to size using a drum-type grading screen; S2: Performing at least two stages of grinding on the pre-treated pulp residue, first coarsely grinding it into granules using a wood grinder, and then finely refining it into wood fibers using a high-speed refiner; S3: Performing multi-stage gradient screening on the wood fibers to remove different types of impurities; S4: Modifying the screened wood fibers using a low-consistency dual-disc mill to improve their water absorption and binding strength; S5: Mixing the modified wood fibers with long fibers and obtaining the finished fiber through a three-stage concentration process. This invention constructs a complete technical chain from graded pre-treatment to specific mixing and concentration, effectively solving the problems of equipment blockage caused by uneven pulp residue composition and poor binding strength of recycled fibers, achieving high yield and high-quality recycling of pulp residue.

This invention discloses a method for the efficient gradient pulping recycling and reuse of waste cotton textiles and the preparation of functional fibers. This invention belongs to the field of textile printing and dyeing processing. After being cut, waste cotton textiles undergo pre-impregnation with chemical agents, followed by gradient pulping treatment using a disc mill and a Walli beater, and bleaching to obtain cotton pulp fibers prepared from waste cotton textiles. This invention uses the various mechanical forces generated by the pulping machine to cause certain physical changes in the fibers, further refining, swelling, kneading, and crushing them, promoting the formation of individual fibers. Further bleaching removes color and other impurities to achieve fiber whiteness. Pulping increases the hydrogen bonding force between fibers, improving the strength and softness of the paper sheet, meeting the requirements for normal papermaking. Simultaneously, the high-quality cellulose obtained after treatment can be further chemically modified to prepare functional cellulose, providing more directions for cellulose reuse.

A method for recovering metals from waste wherein the material is sieved to separate non-fibrous feedstock. The non-fibrous feedstock is then crushed using a disc mill to further separate it, thereby obtaining a mixture consisting of a metallic fraction and a non-metallic residue. The metal fraction may then be collected. In addition, a system employing the method is used to efficiently process such materials.

The invention discloses a multi-stage sealing double-spindle nail disc mill which comprises a first spindle on the feeding side, a second spindle on the non-feeding side, a millstone annularly arranged at the joint of the first spindle and the second spindle and a cavity communicated with the millstone, the first spindle and the second spindle are coaxially and reversely rotated, a sealing structure is arranged at the joint of the millstone and the cavity, and the sealing structure is arranged in the center line direction of the millstone. The sealing structure sequentially comprises a first-stage sealing unit, a second-stage sealing unit and a third-stage sealing unit from the end away from the cavity to the end close to the cavity, the first-stage sealing unit is in contact type mechanical sealing, and the second-stage sealing unit and the third-stage sealing unit are in non-contact type air curtain sealing. By means of a contact-non-contact fused multi-stage sealing structure, powder is thoroughly isolated through a non-contact air curtain, a clean working environment is created for contact type main sealing, sealed powder is converted into sealed gas, and zero leakage is achieved under the working conditions of superfine powder, high pressure and high speed.

The invention discloses a semitransparent specialty paper green production process method based on an enzymatic pulping technology, and belongs to the technical field of specialty paper preparation. The invention discloses a semi-transparent specialty paper green production process method based on an enzymatic pulping technology. The semi-transparent specialty paper green production process method comprises the following steps: S1, respectively soaking wheat straw, coniferous wood, moso bamboo and bagasse in water, freezing, naturally unfreezing, and carrying out first crushing and mixing to obtain a first raw material; s2, adding water, thermophilic xylanase and chitosan into the first raw material, and carrying out first enzymolysis to obtain a first enzymolysis material; s3, carrying out second crushing on the first enzymolysis material, and extruding by a press to obtain a second raw material; s4, mixing the second raw material with tannic acid, and circularly passing through an enzymolysis column for second enzymolysis to obtain a second enzymolysis material; s5, carrying out magnetic treatment on the second enzymolysis material, and then grinding the second enzymolysis material into pulp by adopting a disc mill to obtain pulp; and S6, making the pulp into paper under the auxiliary treatment of a magnetic field. The prepared semitransparent specialty paper has high strength and a semitransparent effect, and T / Haze of the semitransparent specialty paper is close to about 2. The preparation method is low in energy consumption, almost no chemical reagent is adopted, part of enzyme and waste liquid can be repeatedly used, and the effects of energy conservation and environmental protection are achieved.

This invention relates to the fabrication and application of a robust, biodegradable, and recyclable straw protective film, belonging to the field of zinc-ion battery technology. The straw raw material, after hydrothermal and chemical pretreatment, is pulped using a disc mill and stored at low temperature. The pulp is then sulfonated to obtain a mechanical pulp through a chemical reaction. An ionic liquid is slowly added to the sulfonated mechanical pulp and dissolved. The mixture is transferred to a glass plate and coated onto a film using a film-coating machine. In-situ regeneration treatment retains lignin and attaches sulfonic acid groups to cellulose fibers, enhancing the water stability of the cellulose fibers and ensuring the integrity and mechanical strength of the SLC biofilm during long-term electrochemical cycling immersed in an aqueous electrolyte. The resulting SLC biofilm retains the rapid ion transport channels within the cellulose fibers, balances the Zn flux at the anode interface, and promotes Zn... 2+ Rapid three-dimensional diffusion at the nucleation interface significantly improves the cycling stability of the zinc electrode under high current density.

The invention belongs to the technical field of feeds, and particularly relates to a processing technology for preparing an ampelopsis grossedentata feed raw material by utilizing waste stem leaves of ampelopsis grossedentata. The specific process comprises the following steps: 1) crushing waste stems and leaves after ampelopsis grossedentata is picked to be less than 30cm by adopting a wet material crusher; 2) rolling the crushed ampelopsis grossedentata stems and leaves for 2-3 times by using a tooth type three-roller roller press to obtain rolled ampelopsis grossedentata stems and leaves; 3) carrying out disc milling on the rolled ampelopsis grossedentata stems and leaves for 2-3 times by using a disc mill (with rated power of 3500 W and rotating speed of 1500 revolutions per minute), and screening by using a screen to obtain ampelopsis grossedentata particles of less than 20 meshes; 4) adjusting the moisture of the ampelopsis grossedentata particles to about 50-60%, putting the ampelopsis grossedentata particles into a steam explosion reaction device, and maintaining for 3-5 minutes under the steam explosion pressure of 1-2 MPa to obtain steam-exploded ampelopsis grossedentata particles; 5) uniformly mixing the steam-exploded ampelopsis grossedentata particles, cellulase, saccharomyces cerevisiae powder and lactobacillus plantarum powder, and adjusting the moisture to 30-40%; and (6) loading into a fermentation tank or a breathing bag, and fermenting for 3-5 days to obtain the ampelopsis grossedentata feed raw material. The ampelopsis grossedentata feed raw material prepared by the invention has obvious sour and sweet smell, and compared with a control group, the ampelopsis grossedentata feed raw material has the advantages that the crude protein content is increased by 15.41%, the crude fiber content is reduced by 49.93%, the total flavone content is increased by 33.62%, the dihydromyricetin content is increased by 36.47%, and the ampelopsis grossedentata feed raw material has acid fragrance, has good antibacterial ability and antioxidant ability, and can be used for preparing the feed. The feeding nutritional value and the economic value of the ampelopsis grossedentata waste are effectively improved.

The utility model belongs to the technical field of papermaking abrasive discs, and particularly relates to a disc mill abrasive disc which comprises a first abrasive disc body and further comprises a second abrasive disc body movably installed on one side of the first abrasive disc body, polyethylene layers are fixedly arranged in the first abrasive disc body and the second abrasive disc body, and silicon carbide layers are fixedly arranged at the bottoms of the polyethylene layers. The high-speed steel layer is fixedly arranged at the bottom of the silicon carbide layer, the first abrasive disc and the second abrasive disc can be spliced, then the polyethylene layer is known due to excellent wear resistance, impact resistance, chemical stability and low friction coefficient, and the high-speed steel abrasive disc becomes an ideal abrasive disc material in papermaking machinery due to the characteristics; the high hardness, excellent wear resistance, high temperature resistance and corrosion resistance of the silicon carbide layer are utilized, then the high hardness of the high-speed steel layer is utilized to enhance the strength of the first abrasive disc and the second abrasive disc, the abrasive disc materials are good enough, the service life of the abrasive disc can be prolonged, and the working time of the abrasive disc is prolonged.

Laboratory mill (1) for grinding material, in particular designed as a cutting mill, impact mill, disc mill, knife mill, impact mill, centrifugal mill, rotor mill, rotor high-speed mill or mortar mill, comprising: a grinding mechanism (4) with a grinding mechanism housing (6) which defines a grinding chamber (18), and with a grinding mechanism rotor (16) which is rotatably driven in the grinding chamber (18) to grind the material to be ground with the grinding mechanism rotor (16) in the grinding chamber (18), wherein the grinding mechanism housing (6) has a material filling opening (26) which leads into the grinding chamber (18) in order to introduce the material to be ground from the outside through the material filling opening (26) into the grinding chamber (18), a drive motor for driving the grinding rotor (16) in the grinding chamber (18), a grinding material feed hopper (28) which opens into the grinding material feed opening (26), such that the grinding material can be filled into the grinding material feed hopper (28) and passes through the grinding material feed hopper (28) and the grinding material feed opening (26) into the grinding chamber (18), while the grinding rotor (16) rotates in the grinding chamber (18), a grinding material filling plunger (40) that can be inserted into the grinding material filling hopper (28), wherein the grinding material filling plunger (40) has a grinding material filling channel (50) through which the grinding material can be filled into the grinding chamber (18) when the grinding material filling plunger (40) is inserted into the grinding material filling hopper (28), wherein the grinding material filling plunger (40) has at least a section of a screw section (52) axially, in which the grinding material filling channel (50) runs in a helical or spiral manner in the grinding material filling plunger (40).

The present application belongs to the technical field of seaweed chemical industry, and particularly relates to a method for extracting alginate from brown algae by high-shear digestion. The method comprises the following steps: 1) digestion: adding brown algae into a high-shear digestion reactor for alkali digestion, wherein the high-shear reactor is a disc mill type reactor; and 2) obtaining a product: obtaining alginate from the digestion solution. Preferably, the rotation speed of the grinding disc is 500-1500 r / min. The present application realizes the coupling of physical shearing and chemical digestion of mechanical elements, breaks the raw materials through physical shearing to promote the mixing of materials and improve the digestion rate, accelerates the disintegration of the raw materials through chemical digestion, and reduces the action intensity of the mechanical elements, so that the mechanical elements do not need to be frequently replaced, thereby providing convenience for production operation.

The utility model provides a lead protection device of a bearing of a roller disc type coal mill. The lead protection device is characterized in that connectors are fixed on two sides of a metal tube; the bent pipe is connected to the connector, and a nut is arranged at the tail end of the bent pipe. The spring is wound on the metal tube; and the outer side wall of the spring is coated with a wear-resistant layer. According to the overall structure, the service life is prolonged, and meanwhile the use strength and the limiting protection capacity of the device are improved.

The invention relates to a disc mill comprising: a rotor disc which is connected to a rotary drive shaft with a central region in a floating manner; the first stator disc is located on the driving motor side, and a first abrasive disc gap is formed between the first stator disc and the rotor disc; the second stator disc is located on the side opposite to the driving motor side, and a second abrasive disc gap in fluid communication with the first abrasive disc gap is formed by the second stator disc and the rotor disc; a gap adjustment device adapted to move at least one of the first and second stator discs in an axial direction; the fiber pulp has fiber pulp inlet pressure when entering the disc mill on the driving motor side of the rotor disc and / or on the side opposite to the driving motor side, and the grinding teeth forming the first grinding disc gap and the second grinding disc gap have different grinding tooth structures. The difference of the grinding tooth structures leads to the fact that one grinding sheet gap has lower fiber pulp passing amount between the grinding teeth relative to the other grinding sheet gap and thus has higher pulp layer thickness so as to exactly offset unbalanced pulp pressure on two sides of the rotor disc caused by the combined action of the fiber pulp inlet pressure and the gap adjusting device.

The application provides a waste paper pulp adhesive control method, which comprises the following steps: conveying waste paper to a hydraulic pulper for disintegration, then conveying the waste paper to a high-concentration heavy-duty degritting device, a coarse screen machine, a low-concentration heavy-duty degritting device, a fine screen machine, a disc thickener, a hot disperser and a low-concentration disc mill in sequence for pulping, storing the pulp in a post-beating tank for stirring and storage after pulping, then conveying the pulp to a pressure screen for feeding and screening, then passing through a headbox, a wire part, a press part, a drying part, a sizing part, a coating part, a calender part and a winding part of a paper machine in sequence to form paper, wherein 2-5 kg / ton of dry pulp of bentonite with a mass concentration of 2-3% is added into the post-beating tank, and white water recycled from the wire part of the paper machine is subjected to deep air flotation treatment. By adding bentonite with a set concentration into the post-beating tank and cooperating with the deep air flotation treatment technology, the content of adhesive in the waste paper can be greatly reduced, and the adhesive removal rate can reach more than 94%.

The application discloses a large-scale size-reducing method for improving reaction performance of biomass raw materials, which comprises the following steps: steam treatment of biomass raw materials after water washing and soaking to obtain steamed materials; extrusion treatment of the steamed materials by a double-screw extrusion impregnation machine to obtain extruded materials, which are in the form of coarse wood filaments; water is added to the extruded materials to obtain materials with a solid content of 15-35%, which are ground by a disc mill under normal pressure; during the grinding process, fiber bundles in the biomass raw materials are microfilamentized to obtain biomass materials with improved reaction performance. By the combined use of the double-screw extrusion impregnation machine and the disc mill, the present application can cut fibers, reduce the particle size of the biomass raw materials, realize dissociation and floc separation of the fibers, expose more reaction sites, and improve the specific surface area and reaction performance of the biomass raw materials. In addition, the double-screw extrusion impregnation machine and the disc mill used in the present application are both suitable for large-scale and industrial production.

The invention relates to a method for removing organic pollutants through disc mill driven piezoelectric catalysis, to-be-treated organic pollutants and a piezoelectric catalyst are added on the surface of a polishing pad, the piezoelectric catalyst is used as a grinding material, and a gasket performs disc mill periodic motion on the surface of the polishing pad under the action of mechanical force driven by a disc mill, so that the surface of the polishing pad is polished. Pressure generated between the gasket and the polishing pad can drive the piezoelectric catalytic effect to remove organic pollutants to be treated. According to the scheme, the catalytic efficiency is remarkably improved, and the energy consumption is greatly reduced; solvent dependence can be avoided, and the application scene is expanded; non-biodegradable organic pollutants, even perfluorinated compounds, can be removed in a targeted manner; a piezoelectric catalysis technology driven in a new mode is developed, and a new thought is provided for popularization and application of the piezoelectric catalysis technology.

A paperboard core layer preparation process for performing accurate grinding treatment on chemi-mechanical pulp comprises a step of preparing the chemi-mechanical pulp through a chemi-mechanical pulp production line, and further comprises the following steps: pulp supply: the chemi-mechanical pulp production line provides the chemi-mechanical pulp to a double-disc mill; pulping: performing accurate grinding processing on the chemithermomechanical pulp by using the double-disc mill to obtain accurately ground chemithermomechanical pulp; material mixing: conveying the finely ground chemi-mechanical pulp to a core-layer pulp mixing tank, and mixing with chemi-mechanical pulp, waste pulp and chemical pulp in the core-layer pulp mixing tank to form mixed pulp; and paper making: conveying the mixed pulp to a PM32 paper machine for paper making. Accurately-ground chemi-mechanical pulp is added into the core layer through stable pulp preparation and is uniformly mixed with non-accurately-ground chemi-mechanical pulp and broken paper pulp, and the fiber length and the separating degree are balanced, so that the fiber interweaving capacity of the core layer is improved, the fibers are interwoven more tightly, the binding force between the fibers is enhanced, and the fiber bonding strength and the folding strength are improved. Compared with the prior art, the production cost can be greatly reduced on the premise of ensuring the performance of the paperboard.

The invention relates to a method for improving the retention rate of pulp by blending and grinding tobacco raw materials and medium and long fibers, and belongs to the technical field of paper-making process reconstituted tobacco. The method comprises the following steps: uniformly mixing extracted tobacco raw materials with medium and long fibers to obtain a mixed material; the mixed material is subjected to 1-3-level uniform rough hydrolysis through a disc mill under the dryness of 30%-50%, and a rough hydrolysis product is obtained; a disc mill is adopted to feed a rough hydrolysis product step by step to perform middle-concentration and high-concentration (5-15%) pulping, and the retention rate of the pulp is improved through the effects of adsorption, interception, combination and the like among pulp components. According to the method disclosed by the invention, the retention rate of the pulp is increased by 5.0%-30.0%, and the concentration of the under-net concentrated white water is reduced by 5.0%-60.0%.