25 results about "Disc mill" patented technology

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 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 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.

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.

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.

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 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 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 utility model discloses a rumex hanus harvesting and fermenting integrated device which comprises a harvester and a harvesting frame, an air pipe is arranged at the front end of the harvesting frame, air holes are formed in the air pipe, a stirring tank is arranged in the harvester, the stirring tank is connected with a probiotic tank, a disc mill is arranged on the stirring tank, and an extrusion conveyor is arranged at the front end of the disc mill. A meshing shear is arranged at the inlet end of the extrusion conveyor, a trailer is connected to the rear portion of the harvester, a fermentation tank is arranged in the trailer, the bottom of a stirring tank is connected with the fermentation tank through a slurry pump, harvested azolla filliculoidas is directly sheared through the meshing shear, then probiotics are added into the stirring tank, and sufficient stirring and mixing are conducted. Finally, the stirred azolla filliculoidas is conveyed into a fermentation tank to be fermented, the whole process is completed from harvesting to filling fermentation together, and the transportation cost is reduced; in addition, the air pipe located at the front end of the harvesting frame can spray out air during harvesting, and dust removal is carried out on the azolla filliculoidas.

The invention provides paper pulp fiber mechanical force devillicating and brooming equipment, and relates to the technical field of pulping and papermaking, the paper pulp fiber mechanical force devillicating and brooming equipment comprises a disc mill support frame, a feeding driving motor, a disc mill driving motor, a disc mill guide part, a fixed millstone, a feeding dispersing mechanism and an adjusting driving mechanism; the feeding driving motor is fixedly connected to the upper part of the feeding box body; the disc mill driving motor is fixedly connected to the interior of the disc mill driving box; the disc mill material guide part is rotationally connected to the interior of the disc mill treatment box; the fixed grinding disc is fixedly connected to the inner side of the disc grinding treatment box; the feeding dispersing mechanism is arranged in the feeding box body; the adjusting driving mechanism is arranged in the disc mill treatment box, the treatment strength can be dynamically adjusted according to paper pulp with different characteristics, the adaptability of the equipment to various raw materials is improved, and the problems that when paper pulp with different characteristics is treated in the prior art, a millstone needs to be integrally replaced, time is consumed, the cost is high, and the productivity is affected due to shutdown are solved.

A method of producing moldable cellulosic fibers from a cellulosic fiber material, the method comprising: mechanically pre-treating a feedstock to form a fibrous material having a fiber length distribution such that at least 90% of the fibers have a length of less than about 40 millimeters; dewatering the fiber ingredient to produce a first filtrate and a dewatered fiber cake having a moisture content of less than about 50% (by weight); pulping the dehydrated fiber cake at a temperature in the range of 45 to 95 DEG C to produce a pulpified fiber material having a consistency of less than about 5% fiber (by weight); washing the pulpified fibrous material to produce a cake of cellulosic fibers having a consistency of at least 10% fibers (by weight) and a second filtrate; and refining the cake of cellulosic fibers in at least one disc mill to produce moldable cellulosic fibers.

The invention provides a method for treating oats. The present invention relates to a process for the preparation of oat granules, comprising the following steps: a) providing oat granules, b) heat treating the oat granules at a temperature of 95-100 DEG C, c) processing the oat granules in a disc mill to obtain ground oat granules, d) sizing the ground oat granules to obtain at least one finer product component and at least one coarser product component. The technical result consists in providing an oat flour having a low alcohol soluble glutenin content, in particular a compound that causes dietary sensitivity and disorders in patients diagnosed with celiac disease. The method is suitable for large-scale production, especially because the separation is carried out in a dry state. All the oat hulls can be recycled and used for different purposes, so that any part of the oat hulls does not need to be discarded.

The utility model provides a fan-shaped high-density disc mill abrasive disc, and relates to the technical field of papermaking. Comprising a mounting disc, a first fan-shaped abrasive disc, a second fan-shaped abrasive disc, a third fan-shaped abrasive disc and a fourth fan-shaped abrasive disc, and first fixing blocks are fixedly connected to the outer sides of one ends of the first fan-shaped abrasive disc, the second fan-shaped abrasive disc, the third fan-shaped abrasive disc and the fourth fan-shaped abrasive disc. According to the fan-shaped high-density disc mill abrasive disc, when the fan-shaped abrasive disc bodies need to be replaced, fixing of the abrasive disc bodies needing to be replaced can be relieved through the second fixing assemblies, then fixing of the two sides of the whole abrasive disc body of one abrasive disc body is relieved through the first fixing assemblies, the abrasive disc bodies needing to be replaced can be rapidly replaced, and after replacement is completed, the abrasive disc bodies needing to be replaced can be rapidly replaced. The replaced abrasive disc is fixed to other abrasive discs through the first fixing assembly, then the replaced abrasive disc is fixed to the installation disc through the second fixing assembly, installation is completed, operation is easy, the labor intensity of workers is reduced, and the replacement efficiency is improved.

The invention discloses high-bulk high-strength bamboo chemimechanical pulp and a preparation method thereof, and belongs to the field of pulping processes. The method comprises the following steps: carrying out polycondensation treatment on bamboo chips by adopting a sodium sulfite solution, and controlling polycondensation reaction conditions, wherein the yield of slurry is 70-80%, the content of lignin in extruded slurry is 20-30%, the content of a beta-O-4 structure in a lignin structure is reduced by less than 20%, the content of a beta-beta structure is reduced by less than 2%, and the content of a beta-5 structure is reduced by less than 0.5%. Extruding the treated material to discharge waste liquid to obtain extruded slurry; the extruded slurry is placed in an alkaline hydrogen peroxide solution for directional oxidation treatment, and the carboxyl value of ground wood lignin in the obtained oxidized slurry is controlled to be higher than 0.12 mol / kg; and finally, carrying out disc milling treatment to obtain the chemimechanical pulp. According to the preparation method disclosed by the invention, through a synergistic process of moderate polycondensation and directional oxidation, stable carbon-carbon bonds are constructed by polycondensation to support the bulk, and carboxyl is introduced by virtue of oxidation ring opening to enhance hydrogen bond combination between fibers, so that the bulk and the strength of the slurry are synchronously improved, and the technical bottleneck that the two are difficult to obtain simultaneously in a traditional process is broken through.

This invention belongs to the field of comprehensive utilization of biomass resources and pulping and papermaking technology, and relates to a pulping method based on coconut shell raw materials and its application in the production of corrugated packaging materials. The method includes: processing coconut shell raw materials through a twin-screw extrusion and kneading process to obtain a mixture; obtaining coconut fiber components through multi-stage sieving; subjecting the coconut fibers to hot water or alkaline cooking; grinding with a high-consistency disc mill or defragmenting with a fiber delamination machine, and sieving to obtain coconut pulp. The obtained coconut pulp is mixed with recycled fiber pulp, chemical additives are added, and the mixture is then used to produce corrugated base paper or boxboard. This invention achieves efficient and clean separation of coconut shell fibers through a combination of twin-screw extrusion and kneading + pre-hydrolysis / alkaline cooking + high-consistency refining / defragmentation processes, resulting in high pulp yield, good fiber morphology, and a maximum ring crush index of 8.3 N·m / g and a maximum bursting index of 3.4 kPa·m. 2 / g, opening up a new source of low-cost, renewable fiber raw materials for the pulp and paper industry.

This invention relates to the field of bamboo powder and polymer composite materials, specifically to a biodegradable film and bag modified bamboo powder / PBAT composite material and its preparation method. The composite material comprises the following raw materials in parts by weight: 5-20 parts modified bamboo powder, 0-6 parts polylactic acid resin, 65-85 parts PBAT polyester resin, 5-15 parts inorganic filler, and 0.5-2 parts lubricating dispersant. The modified bamboo powder is obtained by grinding bamboo powder in a disc mill, simultaneously adding a liquid ester coupling agent via spray, and then modifying it with ultraviolet irradiation. In this invention, during the ultrafine grinding of bamboo, an ester coupling agent is introduced via atomization, followed by ultraviolet irradiation to induce a free radical reaction, enhancing the hydrophobic modification effect of the ultrafine bamboo powder. This achieves efficient dispersion of the bamboo powder in the PBAT resin carrier, solving the problem of easy agglomeration, while ensuring excellent and stable blown film processing performance. The composite material can be applied to film and bag products such as mulch films, shopping bags, garbage bags, pet bags, and express delivery bags.