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100 results about "Disc mill" patented technology

A disc mill is a type of crusher that can be used to grind, cut, shear, shred, fiberize, pulverize, granulate, crack, rub, curl, fluff, twist, hull, blend, or refine. It works in a similar manner to the ancient Buhrstone mill in that the feedstock is fed between opposing discs or plates. The discs may be grooved, serrated, or spiked.

Chemical mechanical pulping process for whole corn stalk

The invention relates to a chemical mechanical clean pulping process with whole corn stalk as a raw material. Firstly, the cut corn stalk is subjected to pre-extraction in hot water, after solid-liquid separation, the stalk is squeezed, ground and washed, the washed stalk is subjected to three-section high-concentration normal-pressure slurry grinding after being subjected to pre-impregnating treatment, and high-yield and high-strength chemical mechanical pulp is obtained, wherein the corn stalk is cut in a conventional hay cutter; extraction in hot water is chemical-free heating autocatalyticextraction under normal pressure; the extrusion and grinding process is performed in a double-screw extrusion and grinding machine; pre-impregnation is impregnation with sodium hydroxide under normalpressure; three-section high-concentration normal-pressure slurry grinding is performed in a high-concentration normal-pressure disc mill. The process has the benefits that compared with conventionalcorn stalk pulping processes, the process does not require physical separation of stalks and leaves of the corn stalk and is applicable to pulping of the whole corn stalk, part of non-fiber components are separated while fiber components in raw materials are almost completely reserved, a few chemicals are consumed in the pulping process, the obtained pulp is high in yield and good in strength, and high-pressure environment is avoided in the whole process. Produced waste liquids can be directly used as raw materials for other procedures.
Owner:CHINA NAT PULP & PAPER RES INST CO LTD

Low-energy-consumption method for preparing fiberboards by using bio-enzyme to separate fibers

The invention discloses a low-energy-consumption method for preparing fiberboards by using a bio-enzyme to separate fibers. The method includes making woody raw materials, crop straws or bamboo into wood chips or crushed aggregates, and utilizing the bio-enzyme for pretreatment under a certain condition; dissolving the bio-enzyme in water at the temperature of 20-60 DEG C, wherein concentration of the bio-enzyme is 0.05-50%, a proportion of the wood chips or the crushed aggregates and a bio-enzyme solution is 10-50%, and treatment time is 5-120min; utilizing a disc mill to further separate the wood chips, the crushed aggregates or bamboo chips into fibers to replace a mode that a hot-grinding method in a conventional fiberboard preparation process is utilized to separate fibers to prepare the fiberboards. A principle that the bio-enzyme can degrade pectin and lignin in a fiber intercellular layer is creatively utilized to separate the fibers, so that compared with the hot-grinding method, the method has the advantages of cleanliness, environment protection, low energy consumption and low cost. Reduction of energy consumption and production cost during producing of the fiberboards is facilitated, and the low-energy-consumption method has good social benefit and economic benefit.
Owner:SOUTHWEST FORESTRY UNIVERSITY

Opposite netted disc mill

The invention aims to provide an opposite netted disc mill which has the advantages of energy saving, convenient arrangement, simple maintenance, stable performance, small occupied area and high output. The mill which comprises a frame, a motor and a speed reducer which are arranged at the bottom of the frame, and a stone inlet and a water inlet which are arranged above the frame is characterized in that: a stone salver which is arranged under millstones is connected with a stone outlet at one side of the central section of the frame, the coupling of the speed reducer is fixedly connected with the lower millstone, the upper millstone is connected with the frame through positioning pins, and springs are arranged surrounding the positioning pins; the upper millstone clings to the lower millstone, and netted mill courses are arranged on clinging surfaces; and the upper millstone is annular in shape, and the middle through hole is a stone channel. The motor is started to charge the stone from the stone inlet, and simultaneously water is charged from the water inlet; the stone enters a space between the upper millstone and the lower millstone through the middle through hole of the upper millstone, and the rotation of the lower millstone grinds the stone into stone flour; and the stone flour falls from a space between outer edges of the two millstones, and then is discharged from the discharge port through the inclined stone salver under the millstones.
Owner:莫虎林 +1

Cotton stalk bleach pulp with disinfection function and method of manufacturing the same

The invention relates to a bleached cotton-stalk pulp with function of disinfection and sterilization and the preparing method for the pulp, which is to solve the problem associated with prior paper pulp that can't disinfect and sterilize, and is a bleached cotton-stalk pulp made from cotton-stalk natural-color pulp by bleaching with hydrogen peroxide. In the bleached cotton-stalk pulp, additionally some nanometer titanium whiting powder is added. The added volume of the nanometer titanium whiting powder is 0.05-3% of the dry weight of the bleached cotton-stalk pulp. The preparing method comprises in sequence the following procedures: 1) crushing; 2) separating into cellulose bundles by a rubbing and separating machine; 3) adding water onto the cellulose bundles in a moistening bin, heating up to 90-100 centigrade till the cellulose bundles soften; 4) rough grinding by a hi-concentration disc mill, extruding out lignin and black liquid by a pulp-extruding machine to get pulp in natural color; 5) adding water onto the natural-color pulp in a reaction bin, milling and bleaching the pulp by hydrogen peroxide decolorizer, extruding out white liquid by a pulp-extruding machine to get bleached cotton-stalk pulp; 6) neutralizing the extruded black and white liquid, defecating with oxidizing flocculator, the clean water from that will be guided into the moistening bin and the reaction bin for circulating. The invention has the functions of disinfection and sterilization, can be used for making sanitary napkins, napkin paper, hand towels and wall paper, etc. with disinfection function.
Owner:山东亿同多欧纸业投资有限公司

Method for preparing inorganic ceramic membrane separation device from coal gangue

The invention discloses a method for preparing an inorganic ceramic membrane separation device from coal gangue. The process for removing impurities in the coal gangue through pickling comprises steps as follows: A, the coal gangue is mechanically crushed by a jaw crusher or a disc mill and subjected to ball milling by a ball mill; B, partial impurities are removed through pre-sintering at 400 DEG C; C, hydrochloric acid is slowly added to a beaker containing the pre-sintered coal gangue; D, the mixture is poured into a round-bottom flask after a reaction is stabilized and reacts for 2 h in an assembled pickling device; E, suction filtration is performed while the mixture is hot; F, repeated suction filtration is performed with clear water; G, a last-time filtrate is taken for measurement of PH until the filtrate is neutral and does not change color after an KSCN solution is added; H, the mixture is dried for use. The process for manufacturing a ceramic membrane comprises steps as follows: a, an aid is added to the pickled coal gangue for ball milling and mixing; b, decaying and pugging are performed; c, extrusion molding is performed; d, drying is performed; e, high-temperature sintering is performed. According to the method, component characteristics of the coal gangue are utilized, and a composite ceramic membrane tube with Al2O3 and SiO2 being the main components is developed and is used for high-temperature gas-solid separation in fields of industrial coal-fired boilers, metallurgy, building materials and the like.
Owner:GUIZHOU UNIV

Method for producing degradable mulching film paper by utilizing bamboo pulp

The invention provides a method for producing degradable mulching film paper by using bamboo pulp. The method comprises the following steps of pulping, concentrating, high-concentration pulping, seasonings feeding, forming on a net, squeezing, drying, coiling, rewinding and packaging; pulping is carried out by using 100% of bamboo fiber pulp at high concentration of 15-20%, pulping is carried outby using a medium-concentration disc mill, and the net concentration is set to be 0.18-0.45% and the net pH value is set to be 6.5-7.5. After forming on a net, squeezing is performed through a four-roller three-pressing area until the dryness is 45%-48%; the obtained mulching film paper has the advantages that the quantification is 40-80g/m<2>, the paper dryness is 8%-9%, the air permeability is 15-60mu m/Pa.s, the longitudinal tensile strength is 1.2-3.2 kN/m, the transverse tensile strength is 0.8-2 kN/m, the water absorption value is 35-50g/m<2>, and the paper tightness is 0.4-0.5 g/m<3>. According to the invention, bamboo fibers are used as a raw material, so that the raw material source of the mulching film paper is expanded, the situation of tension supply of wood pulp is relieved, and the performance of the mulching film paper is improved to a certain extent.
Owner:江西中竹生物质科技有限公司

High-consistency hydraulic disc mill

InactiveCN103255667AEasy to adjustConvenient refining specific pressurePulp beating/refining methodsHydraulic cylinderDisc mill
A high-consistency hydraulic disc mill comprises a spiral feed unit, a hydraulic adjusting unit and a high-consistency disc mill body, wherein the rotating speed of a conveying screw is adjusted by a variable-frequency and variable-speed motor, and feed quantity of the high-consistency disc mill is matched with the defibrination output of the high-consistency disc mill. The hydraulic adjusting unit is composed of an oil tank, a hydraulic pump, a solenoid directional valve, a pressure regulating valve, a pressure retaining valve, a hydraulic cylinder, a piston, a thrust cylinder, a cooler, the pressure regulating valve and a pressure gauge, wherein the hydraulic cylinder is fixed on a bearing body suspended frame, the piston is fixed on the thrust cylinder, one end of the thrust cylinder is fixed on an front bearing cover, and a mechanical limiting fine tuning nut is arranged at the other end of the thrust cylinder. The high-consistency disc mill body is composed of a machine shell, a machine cover, a fixed disc, a rotating disc, the bearing body suspending frame, a bearing body, a shaft, a coupler and a motor, wherein the fixed disc is fixed on the machine cover and the rotating disc is fixed on the shaft. Due to the fact that the hydraulic regulating unit which is provided with a pressure retaining return circuit regulates the advancing and the retreating of a knife and defibrination specific pressure, producing of high-consistency milled defibrination with the fixed specific pressure is achieved, energy is saved, and defibrination efficiency is improved.
Owner:SOUTH CHINA UNIV OF TECH

Method for producing degradable mulching film paper by utilizing fir leftover materials and branch material pulp

The invention provides a method for producing degradable mulching film paper by utilizing fir leftover materials and branch material pulp. The method comprises the following steps of: pulping, concentrating, pulping at high concentration, feeding seasonings, removing sand, forming on a net, squeezing, drying, coiling, rewinding and packaging, wherein 100% fir fiber pulp is pulped at high concentration of 22%, and then pulped by a medium-concentration disc mill, the net concentration is set to be 0.18-0.3%, the the net pH value is 6.5-7.5, after forming on a net, squeezing is performed througha four-roller three-pressing area until the dryness is 47-49%, the paper quantity of the obtained mulching film paper is 50-60 g/m<2>, the paper dryness is 8-9%, the air permeability is 30-45 [mu]m/Pa.s, the longitudinal tensile index is 38-42 N.m/g, the transverse tensile index is 22-28 N.m/g, the water absorption value is 30-45 g/m<2>, and the paper tightness is 0.38-0.43 g/m<3>. According to the invention, fir leftover materials and branch material fibers are used as raw materials, so that the raw material source of the mulching film paper is expanded, the situation of tension supply of rawwood is relieved, and the performance of the mulching film paper is improved to a certain extent.
Owner:江西中竹生物质科技有限公司

Treatment method for improving performance of producing methane through anaerobic fermentation of straw and application thereof

The invention belongs to the technical field of preparation of biogas through anaerobic fermentation and conversion of organic solid waste, and particularly relates to a treatment method for improving the performance of producing methane through anaerobic fermentation of straw and application thereof. Aiming at the problems that crop straws are difficult to degrade in the anaerobic fermentation process and the pretreatment cost is high, the invention provides an environment-friendly, simple, convenient and efficient forestry and agricultural residue pretreatment method. According to the method, acid liquor generated in the crop straw anaerobic fermentation acidification process is used for replacing traditional acid chemical reagents, raw materials are dippedand swelled, then a mechanical disc mill with low energy consumption is combined to pretreat the biomass raw materials, the complex structure of lignocellulose biomass can be effectively damaged, the cellulose crystallinity is reduced, the porosity of the raw materials is improved, and the gas production efficiency of the biomass is improved. According to the method, an anaerobic fermentation process and a biomass pretreatment process are combined, a new way is provided for efficient conversion of biomass resources to prepare the biogas, and the method has important significance for development of biogas engineering.
Owner:CHINA AGRI UNIV

Production method of black facial mask paper

The invention discloses a production method of black facial mask paper. The preparation method comprises the steps: S100, pulping: mixing softwood pulp fibers with nanoscale carbon black to form softwood pulp fiber-carbon black mixed pulp, respectively and continuously pulping the softwood pulp fiber-carbon black mixed pulp and hardwood pulp fibers by adopting a double-disc mill, and mixing the pulped softwood pulp fiber-carbon black mixed pulp and the pulped hardwood pulp fibers to prepare mixed pulp; S200, papermaking: diluting the mixed pulp, respectively adding calcium carbonate, a guar gum reinforcing agent and a guar gum retention aid through a short circulation system to form paper pulp, forming the paper pulp at a net part, and dehydrating the paper pulp at a squeezing part to obtain a wet paper sheet; and S300, drying: carrying out drying treatment on the wet paper sheet through a pre-drying drying cylinder to obtain a semi-dry paper sheet, coating a wet strength agent polyamide polyamine-epichlorohydrin resin PAE on a sizing part of the semi-dry paper sheet to obtain finished paper, carrying out drying treatment on the finished paper through a post-drying drying cylinder,and rolling to obtain the black facial mask paper. According to the production method of the black facial mask paper, the produced black facial mask paper has natural black appearance and is integrally uniform and breathable, wood pulp fibers and nanoscale carbon black are organically combined in the product, the facial mask paper is endowed with unique black appearance, and meanwhile, the oil stain adsorption, permeation and water replenishing capacities of a finally processed facial mask are enhanced.
Owner:MUDANJIANG HENGFENG PAPER CO LTD

Production process of high-strength environment-friendly liner cardboard paper

The invention belongs to the technical field of cardboard paper, and provides a production process of high-strength environment-friendly liner cardboard paper, which comprises the following steps: taking domestic bamboo fiber pulp, imported wet paper pulp, imported roll paper and national waste as raw materials according to a specific ratio; the wet paper pulp and the bamboo fiber pulp are mixed and pulped through a medium-concentration pulper, a sand remover, a pre-grinding pool, a disc mill and a post-grinding pool in sequence, and first mixed pulp is obtained; in the OCC pulping line, the cut roll paper and national waste are treated through an OCC pulper, a high-concentration sand remover, a discharging tower, a two-section coarse screen and a classifying screen in sequence to obtain long fibers and short fibers, and then the long fibers and the short fibers are subjected to aftertreatment to obtain long fiber pulp and short fiber pulp; and mixing the long fiber pulp, the short fiber pulp and the first mixed pulp, and performing papermaking to obtain the liner cardboard paper. According to the production process, national waste is mainly used, quantitative roll paper, wet paper pulp and bamboo fiber pulp are matched, and the production process is optimized, so that the cost is reduced, the production efficiency is improved, the quality of finished paper can be improved, and the problem that external waste import is limited is solved.
Owner:东莞理文造纸厂有限公司

Book and cultural paper pulping method

InactiveCN105648829ATake advantage ofMake full use of waste paper resourcesPulp bleachingSecondary cellulose fibresHigh concentrationDisc mill
The invention discloses a book and cultural paper pulping method which comprises a pulping step and a pulp mixing step. The book and cultural paper pulping method specifically comprises the following steps: (1) pulping: (a) preparing waste paper deinking pulp, namely pulping waste paper, coarsely screening for removing impurities, carrying out flotation deinking for removing ink particles, and entering a heat dispersion system after passing through a heavy impurity deslagging system and a primary multi-stage fine screening system, so that the sizes of large ink, dust and adhesives are reduced and the concentration reaches 28-32%; enabling the heat-dispersed pulp to enter a bleaching tower for oxidation bleaching; entering a rear flotation deinking system after bleaching, and separating the ink particles in the pulp; carrying out reductive bleaching to remove colored substances in the pulp until the concentration reaches 10%; mixing the pulp in a pulp storage tower; (b) preparing wood pulp, namely pulping a wood pulp block through a hydrapulper until the concentration is 4%-5%, enabling the pulp to enter an unloading pulp pool until the concentration reaches 3.5%, processing the pulp through a high-concentration grit catcher, processing the pulp through a disc mill and then entering the slurry pool for mixing; and (2) mixing pulp, namely mixing the pulp from the waste paper deinking pulp and the wood pulp at a ratio of 70%-80% to 20%-30% (v/v), and fully mixing until the concentration reaches 3.5%.
Owner:GUANGDONG HUATAI PAPER IND
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