48results about How to "Simple pulping process" patented technology

The present invention features that after chemical treatment with alkali, the wood pulp is ground mechanically. Thus produced wood pulp has whiteness of 57-60 % (ISO), beating degree of 70-78 deg SR, breaking length greater than 2200 m, splitting index greater than 2.8 mN.sq.m square/g and wet weight of 4.0g. The present invention, as one optimized pulp grinding process, has simple process, low cost and high pulp grinidng effect.

The invention discloses a method for producing corrugated base paper pulp by utilizing scrap materials of a fibre board. The method comprises the main steps of: preparing, soaking, steaming, spirally extruding, chemically processing, grinding, eliminating, washing and purifying materials. A majority of free formaldehyde in the raw material is removed and recycled possibly in a pulping process; a little of chemical solution is added from the rear part of a twin screw extruder, and the liquid medicine is uniformly mixed with the fibre and then subjected to mild chemical reaction by utilizing high-concentration mixing action of an extruder and heat energy generated in extruding and mixing processes, so that the high pulping yield is kept, the damage to the fibre in a grinding process is alleviated, the excellent physical strength of the pulp fibre is ensured, and the pollution load in the pulping process is reduced at the same time.

The invention discloses a fiber for cement concrete, which comprises the following constituents that the water cement ratio is 0.35-0.45; the glue sand ratio is 1:0.5-1:1.2; the content of high-efficiency expansive agent is 8-10 percent of the dosage of cement; the content of the high-efficiency water reducing agent is 0.5-1 percent of the dosage of the cement; and the content of polypropylene fibers is 1 m, and 0.8-1.2kg of the polypropylene fibers are doped in sand pulp. The invention also discloses a production method of the fiber. The fiber is a high-strength prestressed anchor grouting material having high rupture strength, compressive strength and tensile strength, small brittleness, good cracking resistance and impermeability and high bonding shearing strength and bondability strength.

The present invention relates to a catalyzer for clean pulping and process for using the same. The composition of the catalyzer for clean pulping according to the present invention includes sodium salicylate, anion silicic acid softener, cooking aids, liquid(gaseous) chlorine and water. The process for using the catalyzer for clean pulping according to the present invention includes the following steps: 1, cutting and impurities removing for the raw material, 2, feed preparation and impurities removing, 3, dividing into fibers by refining, 4, catalysis copolymerization, 5, refining, 6, concentration and separation 7, pulp bleaching, 8, pulp washing and 9, finished pulp. All kinds of the herbs can be used for the raw material. The advantages of the present invention is shown as the following: it realizes the clean production; it does not need to digest and does not produce black liquor; the process is simple and is performed at normal temperature; the resource of crops is fully used; the effect of water conservation is remarkable; it can easily realize continuous production, modularization production and automatization production, and can realize industrialization.

The invention relates to a technology for pulping with biochemical solvent, with the technical course: use the nonwood fiber plant as the raw material, scatter it and clear the mixture away, through pulping, disc mill, potching and pulp washing to be the product brei. It has the characteristics that the pulping course is immersing the scattered material into biochemical solvent for 2-2.5h under the general temperature and pressure, it has simple technique convenient operation, low cost, and no pollution.

The invention discloses a method for preparing water coal semicoke grout by coal dust filling modification and a grading technology. The method comprises a step 1) of preparing coarse coal powder and fine coal grout, wherein the coarse coal powder is obtained by causing coal to be smashed through a crusher and then sieved through a 14-mesh sieve; the fine coal grout is obtained by the coal to be smashed through the crusher and undergo ball milling, the fine coal grout comprises fine coal dust, the concentration of the fine coal grout is 40%-60%, and the average grain diameter of the fine coal dust is smaller than or equal to 35 [mu]m; a step 2) of weighing the coarse coal powder, the fine coal grout and the semicoke according to a dry basis proportion of (2-5):(2-5):(2-3), adding water and dispersing agent in the fine coal grout obtained in the step 1), adding the coarse coal dust and the semicoke with stirring and finishing the operaitn in 5 min, and finally performing stirring for 5-10 min to obtain water coal semicoke grout with the viscosity of 500-1500 mPa.S. The method for preparing water coal semicoke grout by coal dust filling modification and the grading technology is simple in pulping process, improves water coal/semicoke grout performances including concentration and stability, the problem that plenty of semicoke is generated in a coal low-temperature dry distillation utilization technology and cannot be subjected to efficient clean utilization is solved, and the method has good industrial application prospect.

The invention discloses a manufacturing method of a battery positive plate. According to the technical scheme, the method is characterized by comprising the following steps: S1, pulping, namely, adding 30-34 parts by weight of a waterborne adhesive into a stirring cylinder, adding 70-80 parts by weight of deionized water, carrying out stirring and dispersing for 8-12min at the speed of 90-110rpm,adding 7-9 parts by weight of a conductive agent, carrying out stirring and dispersing for 8-12min at the speed of 90-110rpm, carrying out stirring and dispersing for 100-140min at the speed of 1000-1400rpm, adding 23-27 parts by weight of deionized water and 160-200 parts by weight of lithium manganate, carrying out stirring and dispersing for 8-12min at the speed of 90-110rpm, carrying out stirring and dispersing for 25-35min at the speed of 900-1100rpm, adding 105-135 parts by weight of lithium manganate, carrying out stirring and dispersing for 8-12min at the speed of 90-110rpm, carrying out stirring and dispersing for 80-100min at the speed of 900-1100rpm, and adjusting the viscosity by using deionized water to obtain slurry; and S2, flaking, namely, uniformly coating an aluminum foilwith the slurry, and carrying out drying and compacting to obtain a positive plate. Because a waterborne polyurethane adhesive is used to manufacture the positive plate, the pulping time is shortened, the pulping process is simplified, the production cost is reduced, and environmental friendliness and no pollution are realized.

The embodiment of the invention provides a sludge incineration treatment method. The sludge incineration treatment method comprises a sewage slurry associated burning incineration method and a synthetic sewage slurry atomization combustion method. The beneficial technical effects of the sludge incineration treatment method are embodied in: superiority: (1). simple slurry preparation process; (2).less slurry preparation equipment; (3). small floor space; (4). simple and convenient operation of the equipment; (5). reduction of production and operation cost; and (6) low requirements of fluidizedcombustion on quality standard of sewage slurry; efficiency: reducing cost and improving efficiency by stokehold slurry preparation, off-site slurry preparation reduction, storage, transportation andother processes; effectiveness: environmental protection technological process, win-win economic benefits, environmental benefits and social benefits; environmental protection: no wastewater discharge, no odor emission, and zero emission in production process; and advantage: respond to national environmental protection policy.

The invention relates to a pulping technology and particularly relates to a sodium silicate low-temperature reaction pulping technology. The pulping technology mainly comprises the following steps: (1) cutting and dedusting the pulping raw material; (2) breaking; (3) screening; (4) adding water and sodium silicate and mixing; (5) squeezing water and washing; (6) pulp grinding; and (7) bleaching. In the technology provided by the invention, the pulping cost is low, and the equipment investment is small; on the premise of no pollution, fiber in the pulping raw material is separated out at low cost; the added sodium silicate replaces sodium hydroxide in traditional technology, the preparation technology is simpler, the pulping water is not discharged, the white pulp yield exceeds 60%, the pulp whiteness is high, the drainability is good, and the tensile strength is high.

The invention relates to mask paper suitable for sensitive skin, and a preparation method thereof, and discloses a process for papermaking by using Qianjinfang medicine residue, wherein the process comprises: microwave pretreatment, fermentation, washing, paper making, medicinal ingredient extracting, paper modification, and the like. According to the present invention, the Qianjinfang medicine residue is used as the raw material for preparing fibers, the Qianjinfang medicine residue simultaneously has the characteristics of herbaceous plants and shrub raw materials, the microwave radiation method and the biological method are combined, the microwave radiation process, the temperature and the time in the pulping process, the papermaking process and the like are scientifically controlled, the performance of the paper prepared by using the method is good, harmful chemicals are not introduced during the whole process so as to ensure the hygienic properties of the paper, and the medicinalingredients are extracted from the pulping filtrate and are applied on the paper, such that the finally obtained product is not irritating to people with sensitive skin.

The invention relates to anti-inflammatory paper and a preparation method thereof, and discloses a process for papermaking by using Qianjinfang medicine residue, wherein the process comprises: microwave pretreatment, fermentation, washing, paper making, extraction of medicinal ingredients from filtrate, paper modification, and the like. According to the present invention, the Qianjinfang medicineresidue is used as the raw material for preparing fibers, the Qianjinfang medicine residue simultaneously has the characteristics of herbaceous plants and shrub raw materials, the microwave radiationmethod and the biological method are combined, the microwave radiation process, the temperature and the time in the pulping process, the papermaking process and the like are scientifically controlled,the paper prepared by using the method has good performance, harmful chemicals are not introduced during the whole process so as to ensure the hygienic properties of the paper, and the medicinal ingredients are extracted from the pulping filtrate and are applied on the paper, such that the finally obtained product has good anti-inflammatory effect.