CN105401477A - Method for improving beating degree and strength through intensive defibering - Google Patents
Method for improving beating degree and strength through intensive defibering Download PDFInfo
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- CN105401477A CN105401477A CN201510709429.2A CN201510709429A CN105401477A CN 105401477 A CN105401477 A CN 105401477A CN 201510709429 A CN201510709429 A CN 201510709429A CN 105401477 A CN105401477 A CN 105401477A
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- 238000010009 beating Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000010902 straw Substances 0.000 claims abstract description 73
- 238000005516 engineering process Methods 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims description 42
- 229920001131 Pulp (paper) Polymers 0.000 claims description 36
- 238000005728 strengthening Methods 0.000 claims description 32
- 239000002002 slurry Substances 0.000 claims description 25
- 241000209140 Triticum Species 0.000 claims description 14
- 235000021307 Triticum Nutrition 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 50
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004537 pulping Methods 0.000 abstract description 5
- 230000000630 rising effect Effects 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 241000209094 Oryza Species 0.000 description 9
- 235000007164 Oryza sativa Nutrition 0.000 description 9
- 235000009566 rice Nutrition 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 238000004458 analytical method Methods 0.000 description 6
- 230000000877 morphologic effect Effects 0.000 description 6
- 230000000704 physical effect Effects 0.000 description 6
- 238000005070 sampling Methods 0.000 description 6
- 238000012163 sequencing technique Methods 0.000 description 6
- 238000010561 standard procedure Methods 0.000 description 6
- 244000007853 Sarothamnus scoparius Species 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 244000025254 Cannabis sativa Species 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000002154 agricultural waste Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
- D21D1/08—Beaters with means for driving the pulp quickly
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- Paper (AREA)
Abstract
The invention discloses a method for improving beating degree and strength through intensive defibering. The method uses an intensive defibering technology to defiber straw pulp, and beating degree of straw pulp can rise as high as 70 DEG SR without a pulping effect. The method is advantaged by extremely little fiber cutting, fast beating degree rising, high pulp strength, obvious quality improving effect, and energy conservation and high efficiency.
Description
Technical field
The invention belongs to straw pulp machinery processing technology field, particularly a kind of field of being discongested raising straw pulp beating degree and intensity by strengthening.
Background technology
The careless agricultural crop straw huge as China one class resource of paddy and wheat, it is used as paper making raw material and has considerable prospect.Constantly improve along with pulping technique constantly progress with to careless class pulping system existing problems, the slurrying level that cleans of careless class there has also been raising by a relatively large margin.China's timber resources seriously in short supply and govern for a long time pulp and paper industry development overall background under, as long as work paddy and wheat straw pulp being cleaned preparation is carried out, the field work of expanding of the guarantee of paddy and wheat straw pulp quality and application is carried out simultaneously, then greatly can alleviate the pressure of China's Papermaking Resource supply wretched insufficiency, accelerate straw pulp and paper mill industrial expansion paces, the level of Integral lifting China paper industry.
The preparation of grass class paper pulp, even if realize cleanly production completely, also can only say it is complete the process transformed from grass as raw material to paper pulp fiber.As for from careless class paper pulp to the application of paper product, then because its fiber is relatively short, be not easy wire-dividing broom purification, and containing more non-fiber cell, to becoming the dry linting of paper tape, falling the problems such as hair, physical strength is on the low side, making it substantially be confined to can only application in low and middle-end paper product, is acknowledged as the class paper pulp that added value is minimum.
Usually, the initial beating degree of careless class paper pulp is many at more than 30oSR.When using it for papermaking, the conventional mode discongested and slightly pull an oar is adopted to carry out processing namely entering paper manufacturing systems.This making beating processing mode is also too fast in order to not make straw pulp beating degree rise, fiber is produced and significantly cuts off, because the beating degree of paddy and wheat straw pulp is usually to after 45oSR, the physical strength of its pulping, particularly tearing strength just there will be decline, and making beating after this has fatefulue destruction to paddy and wheat straw pulp fiber.Therefore, the substantially all non-wire-dividing broom purification of paddy and wheat straw pulp is just used to papermaking, expects that it has positive contribution also just not know where to begin to paper physical intensity.If straw pulp has certain wire-dividing broom purification degree, can not reduce again the physical strength that it becomes paper, even also will obtain stronger paper strength is exactly a bottleneck problem urgently cracked.
Summary of the invention
The object of the invention is to provide a kind of being discongested by strengthening to improve the method that straw pulp beating degree improves pulp strength simultaneously, adopt good, the rare cut-out of outside fibrillating of the fiber after the method process, the good feature of paper strength, and processing procedure is energy-conservation, efficient.
The present invention is discongested by strengthening in the method improving straw pulp beating degree and intensity, and straw pulp is the paper pulp obtained as raw material through conventional chemical steaming using agricultural waste material straw, wheat straw.
The present invention discongests by strengthening the method improving straw pulp beating degree and intensity and carries out according to following concrete steps, and in literary composition, percentage is mass percent unless otherwise indicated:
(1) take a certain amount of straw pulp and be placed in beaker, add water and be adjusted to the fibrous suspension of mass percent concentration 3% ~ 10%;
(2) be transferred in Pulp dredger by mixing up the dense pulp suspension of slurry in step (1), be wherein provided with the shaft of band helical blade in fluffer, helical blade thickness is 10 ~ 15mm, and pitch is 40 ~ 60mm; Airtightly at 20 ~ 30 DEG C strengthening is carried out to pulp suspension discongest, regulate speed of discongesting and time to reach predetermined beating degree 38 ° of SR ~ 70 ° SR;
Wherein straw pulp is rice straw pulp, then beating degree is 40 ° of SR ~ 70 ° SR, if Straw Pulp then beating degree be 38 ° of SR ~ 60 ° SR.
(3) after strengthening has been discongested, turn down the speed to 60 of discongesting ~ 150r/min, with paddle motion, fiber collision does not occur to keep the slurry in fluffer to entwine, reduce the chance producing wadding agglomerate or dough, the now rotation of the stirring vane of fluffer does not affect the beating degree of slurry;
(4) get slurry measures slurry beating degree by national standard, when freeness value fails to reach set goals, repetition step (2), (3) continue to discongest slurry, till meeting predetermined freeness value;
(5) discongest the straw pulp of predetermined beating degree, carry out the handsheet of page, the mensuration of constant temperature and humidity page standard physical intensity by national standard.
It is 1500 ~ 5000r/min that described step (2) strengthens the speed of discongesting discongested, processing time 5 ~ 40min.
The present invention is relative to the advantage of prior art:
(1) for straw chemical pulp, Wheat Straw Pulp, discongest mode discongest with strengthening, the beating degree of rice straw pulp is the highest rises to 70 ° of about SR, and the beating degree of Straw Pulp is the highest rises to 60 ° of about SR;
(2) paddy and wheat straw pulp discongests the main rising by realizing its beating degree to the fibrillating of paper pulp fiber through strengthening, even if when arriving high beating degree, can ignore to the cutting action of fiber;
(3) physical strength of discongesting paper pulp always in the trend increased, to exceeding about 30% during comprehensive physical strength ratio tradition making beating during high beating degree.
The effect mainly dispersed paper pulp fiber that traditional defibering method plays paper pulp.Even if its discongesting fully wood pulp, also can only increase the beating degree of 1 to 2 ° of SR at most.Comparatively speaking, straw pulp after the tradition equipment of discongesting is discongested, maximum 55 ° of about the SR that can rise of the beating degree of straw, wheat straw can close to 50 ° of SR, and the required time of discongesting can be very long.Therefore, when needing the beating degree of paddy and wheat straw pulp to bring up to 45 ° of more than SR, all adopt the beater in laboratory or fiberizer strengthening making beating effect, accelerate fiber finer fibration by the cut-out increasing fiber and brooming reaches the object improving pulp freeness.But paddy and wheat straw pulp is because of the reason of cut staple of pulling an oar, and declining often just appears in its pulp strength before and after 45 ° of SR, and particularly the decline of the tearing strength of proportional relation is obvious with fibre length.This makes intensity own be greatly limited with regard to paddy and wheat straw pulp application added value on the low side.
To apply the fluffer of discongesting effect with strengthening be then hydraulic shear effect by enhancing and blade with the obtuse angle touching effect of fiber in slurry and pass through to improve and discongest blade rotational speed with the frequency strengthening hydraulic shear and collide with fiber and intensity, whole process of discongesting to avoid as pulping process sharp knife blade to the shear action of fibre cutting, thus keep paper pulp fiber length substantially constant always, the raising of the intensity of paper pulp fiber is played an important role; Discongesting in the process promoting beating degree, the rising of beating degree mainly by heteroproteose cell crack and the softening of fiber finer cell wall, outside fibrillating are used for realization, therefore the tearing of paper pulp, trend that anti-tensile, pop strength to 55 ° of SR all also presented increase in the past always, the rising of beating degree afterwards just becomes little to the impact of these several indexs, even if rice straw pulp has arrived the high beating degree of nearly 70 ° of SR, also substantially have no pulp strength to decline, and Straw Pulp is when discongesting the high beating degree of nearly 60 ° of SR, its pulp strength also rises to some extent.Based on these effects, discongested the application of technology by this strengthening, straw pulp not only can exempt the process of making beating, makes the beating degree of paper pulp rise to the scope of high beating degree, the physical strength of paper pulp can also be promoted simultaneously, its application in the middle of medium-to-high grade paper product can be expanded.
Detailed description of the invention
Below by embodiment, the invention will be further described illustrates, but scope is not limited to described content, and in embodiment, all percentage is mass percent unless otherwise indicated.
Embodiment 1: this discongests the method improving straw pulp beating degree and intensity by strengthening, particular content is as follows:
The present embodiment is with rice straw pulp for discongesting object, and after strengthening is discongested, measure its beating degree, pulp strength index, concrete steps are as follows:
(1) take straw pulp and add water and be adjusted to the fibrous suspension of mass percent concentration 10%, rubbing in preparation and be uniformly dispersed;
(2) discongest in groove by what mix up in step (1) that the dense pulp suspension of slurry is transferred to Pulp dredger, airtight good fluffer, wherein be provided with the shaft of band helical blade in fluffer, vane thickness is 10mm, pitch is 40mm, then 25 DEG C, strengthening is carried out to pulp suspension under 2000r/min and discongests 5min, to reach predetermined beating degree 40 ° of SR;
(3) revolution of fluffer in step (2) is turned down to 60r/min, open and discongest groove lid, from the slurry of Uniform Flow in groove, 20mL pulp suspension is got with special sampling cup, namely the paper pulp fiber that oven-dry weight is 2g is equivalent to, get altogether two parts for beating degree parallel determination, take a morsel for fibre morphology sign simultaneously, then stop fluffer rotating;
(4) pulp suspension got in step (3) is transferred to beating degree to measure in special 1000mL graduated cylinder, adds water to 1000mL, measure the freeness value of discongesting rear fibrous suspension by standard method, reach predetermined freeness value;
(5) fiber quality analyzer is utilized to measure the morphological parameters discongesting rear paper pulp fiber;
(6) take out the paper pulp of discongesting in step (4), wherein a part is used for carrying out Sequencing and analysis to physical property of pulp, and manufacturing paper with pulp of page is all undertaken by standard with the mensuration of physical index.
Discongest the result of rice straw pulp: beating degree: 40 ° of SR, average fiber length: 0.398mm, tear index: 4.68mNm
2/ g, tensile index: 54.9Nm/g, burst index: 2.54kPam
2/ g.
Embodiment 2: this discongests the method improving straw pulp beating degree and intensity by strengthening, concrete steps are as follows:
(1) take straw pulp and add water and be adjusted to the fibrous suspension of mass percent concentration 6%, rubbing in preparation and be uniformly dispersed;
(2) discongest in groove by what mix up in step (1) that the dense pulp suspension of slurry is transferred to Pulp dredger, airtight good fluffer, wherein be provided with the shaft of band helical blade in fluffer, vane thickness is 15mm, pitch is 50mm, then 20 DEG C, strengthening is carried out to pulp suspension under 3500r/min and discongests 25min, to reach predetermined beating degree 50 ° of SR;
(3) revolution of fluffer in step (2) is turned down to 100r/min, open and discongest groove lid, from the slurry of Uniform Flow in groove, 33.3mL pulp suspension is got with special sampling cup, namely the paper pulp fiber that oven-dry weight is 2g is equivalent to, get altogether two parts for beating degree parallel determination, take a morsel for fibre morphology sign simultaneously, then stop fluffer rotating;
(4) pulp suspension got in step (3) is transferred to beating degree to measure in special 1000mL graduated cylinder, adds water to 1000mL, measure the freeness value of discongesting rear fibrous suspension by standard method, reach predetermined freeness value;
(5) fiber quality analyzer is utilized to measure the morphological parameters discongesting rear paper pulp fiber;
(6) take out the paper pulp of discongesting in step (4), wherein a part is used for carrying out Sequencing and analysis to physical property of pulp, and manufacturing paper with pulp of page is all undertaken by standard with the mensuration of physical index.
Discongest the result of rice straw pulp: beating degree: 55 ° of SR, average fiber length: 0.398mm, tear index: 4.84mNm
2/ g, tensile index: 55.7Nm/g, burst index: 3.07kPam
2/ g.
Embodiment 3: the method improving straw pulp beating degree and intensity is discongested in this laboratory by strengthening, particular content is as follows:
The straw pulp that the present embodiment is discongested is rice straw pulp, and concrete steps are as follows:
(1) take straw pulp and add water and be adjusted to the fibrous suspension of mass percent concentration 3%, rubbing in preparation and be uniformly dispersed;
(2) discongest in groove by what mix up in step (1) that the dense pulp suspension of slurry is transferred to Pulp dredger, airtight good fluffer, wherein be provided with the shaft of band helical blade in fluffer, vane thickness is 12mm, pitch is 60mm, then 30 DEG C, strengthening is carried out to pulp suspension under 4500r/min and discongests 35min, to reach predetermined beating degree 70 ° of SR;
(3) revolution of fluffer in step (2) is turned down to 150r/min, open and discongest groove lid, from the slurry of Uniform Flow in groove, 66.7mL pulp suspension is got with special sampling cup, namely the paper pulp fiber that oven-dry weight is 2g is equivalent to, get altogether two parts for beating degree parallel determination, take a morsel for fibre morphology sign simultaneously, then stop fluffer rotating;
(4) pulp suspension got in step (3) is transferred to beating degree to measure in special 1000mL graduated cylinder, adds water to 1000mL, measure the freeness value of discongesting rear fibrous suspension by standard method;
(5) freeness value measured 65 ° of SR fail to reach set goals, then need to build notch, continue the slurry 5min discongested in groove, measure its freeness value, meet predetermined freeness value by step (2), (3);
(6) fiber quality analyzer is utilized to measure the morphological parameters discongesting rear paper pulp fiber;
(7) take out the paper pulp of discongesting in step (5), wherein a part is used for carrying out Sequencing and analysis to physical property of pulp, and manufacturing paper with pulp of page is all undertaken by standard with the mensuration of physical index.
Discongest the result of rice straw pulp: beating degree: 70 ° of SR, average fiber length: 0.397mm, tear index: 4.93mNm
2/ g, tensile index: 58.5Nm/g, burst index: 3.14kPam
2/ g.
Embodiment 4: the method improving straw pulp beating degree and intensity is discongested in this laboratory by strengthening, the present embodiment is with Straw Pulp for discongesting object, and after strengthening is discongested, measure its beating degree, pulp strength index, concrete steps are as follows:
(1) take Straw Pulp and add water and be adjusted to the fibrous suspension of mass percent concentration 10%, rubbing in preparation and be uniformly dispersed;
(2) discongest in groove by what mix up in step (1) that the dense pulp suspension of slurry is transferred to Pulp dredger, airtight good fluffer, wherein be provided with the shaft of band helical blade in fluffer, vane thickness is 10mm, pitch is 40mm, then 25 DEG C, strengthening is carried out to pulp suspension under 2000r/min and discongests 5min, to reach predetermined beating degree 38 ° of SR;
(3) revolution of fluffer in step (2) is turned down to 60r/min, open and discongest groove lid, from the slurry of Uniform Flow in groove, 20mL pulp suspension is got with special sampling cup, namely the paper pulp fiber that oven-dry weight is 2g is equivalent to, get altogether two parts for beating degree parallel determination, take a morsel for fibre morphology sign simultaneously, then stop fluffer rotating;
(4) pulp suspension got in step (3) is transferred to beating degree to measure in special 1000mL graduated cylinder, adds water to 1000mL, measure the freeness value of discongesting rear fibrous suspension by standard method, reach predetermined freeness value;
(5) fiber quality analyzer is utilized to measure the morphological parameters discongesting rear paper pulp fiber;
(6) take out the paper pulp of discongesting in step (4), wherein a part is used for carrying out Sequencing and analysis to physical property of pulp, and manufacturing paper with pulp of page is all undertaken by standard with the mensuration of physical index.
Discongest the result of Straw Pulp: beating degree: 38.4 ° of SR, average fiber length: 0.557mm, tear index: 5.25mNm
2/ g, tensile index: 62.2Nm/g, burst index: 3.46kPam
2/ g.
Embodiment 5: the method improving straw pulp beating degree and intensity is discongested in this laboratory by strengthening, the straw pulp that the present embodiment is discongested is rice straw pulp, and concrete steps are as follows:
(1) take straw pulp and add water and be adjusted to the fibrous suspension of mass percent concentration 6%, rubbing in preparation and be uniformly dispersed;
(2) discongest in groove by what mix up in step (1) that the dense pulp suspension of slurry is transferred to Pulp dredger, airtight good fluffer, wherein be provided with the shaft of band helical blade in fluffer, vane thickness is 12mm, pitch is 50mm, then 30 DEG C, strengthening is carried out to pulp suspension under 3500r/min and discongests 20min, to reach predetermined beating degree 52 ° of SR;
(3) revolution of fluffer in step (2) is turned down to 100r/min, open and discongest groove lid, from the slurry of Uniform Flow in groove, 33.3mL pulp suspension is got with special sampling cup, namely the paper pulp fiber that oven-dry weight is 2g is equivalent to, get altogether two parts for beating degree parallel determination, take a morsel for fibre morphology sign simultaneously, then stop fluffer rotating;
(4) pulp suspension got in step (3) is transferred to beating degree to measure in special 1000mL graduated cylinder, adds water to 1000mL, measure the freeness value of discongesting rear fibrous suspension by standard method;
(5) freeness value 49 ° of SR that (4) measure fail to reach set goals, then need to build notch, continue the slurry 5min discongested in groove, measure its freeness value, meet predetermined freeness value by step (2), (3);
(6) fiber quality analyzer is utilized to measure the morphological parameters discongesting rear paper pulp fiber;
(7) take out the paper pulp of discongesting in step (5), wherein a part is used for carrying out Sequencing and analysis to physical property of pulp, and manufacturing paper with pulp of page is all undertaken by standard with the mensuration of physical index.
Discongest the result of Straw Pulp: beating degree: 52 ° of SR, average fiber length: 0.551mm, tear index: 5.39mNm
2/ g, tensile index: 68.7Nm/g, burst index: 3.55kPam
2/ g.
Embodiment 6: this discongests the method improving straw pulp beating degree and intensity by strengthening, the straw pulp that the present embodiment is discongested is Straw Pulp, and concrete steps are as follows:
(1) take Straw Pulp and add water and be adjusted to the fibrous suspension of mass percent concentration 3%, rubbing in preparation and be uniformly dispersed;
(2) discongest in groove by what mix up in step (1) that the dense pulp suspension of slurry is transferred to Pulp dredger, airtight good fluffer, wherein be provided with the shaft of band helical blade in fluffer, vane thickness is 15mm, pitch is 60mm, then 20 DEG C, strengthening is carried out to pulp suspension under 4500r/min and discongests 40min, to reach predetermined beating degree 60 ° of SR;
(3) revolution of fluffer in step (2) is turned down to 150r/min, open and discongest groove lid, from the slurry of Uniform Flow in groove, 66.7mL pulp suspension is got with special sampling cup, namely the paper pulp fiber that oven-dry weight is 2g is equivalent to, get altogether two parts for beating degree parallel determination, take a morsel for fibre morphology sign simultaneously, then stop fluffer rotating;
(4) pulp suspension got in step (3) is transferred to beating degree to measure in special 1000mL graduated cylinder, adds water to 1000mL, measure the freeness value of discongesting rear fibrous suspension by standard method, reach predetermined freeness value;
(5) fiber quality analyzer is utilized to measure the morphological parameters discongesting rear paper pulp fiber;
(6) take out the paper pulp of discongesting in step (4), wherein a part is used for carrying out Sequencing and analysis to physical property of pulp, and manufacturing paper with pulp of page is all undertaken by standard with the mensuration of physical index.
Discongest the result of Straw Pulp: beating degree: 60 ° of SR, average fiber length: 0.548mm, tear index: 5.42mNm
2/ g, tensile index: 70.4Nm/g, burst index: 3.72kPam
2/ g.
Claims (3)
1. discongested the method improving straw pulp beating degree and intensity by strengthening, it is characterized in that concrete technology step is as follows:
(1) take straw pulp and add water and be adjusted to the fibrous suspension of mass percent concentration 3% ~ 10%;
(2) be transferred in Pulp dredger by mixing up the dense pulp suspension of slurry in step (1), wherein be provided with the shaft of band helical blade in fluffer, vane thickness is 10 ~ 15mm, pitch is 40 ~ 60mm, airtightly at 20 ~ 30 DEG C strengthening is carried out to pulp suspension discongest, regulate speed of discongesting and time to reach predetermined beating degree 38 ° of SR ~ 70 ° SR;
(3), after strengthening has been discongested, the speed to 60 of discongesting ~ 150r/min has been turned down;
(4) get slurry measures slurry beating degree by national standard, when freeness value fails to reach set goals, repetition step (2), (3) continue to discongest slurry, till meeting predetermined freeness value;
(5) discongest the straw pulp of predetermined beating degree, carry out the handsheet of page, the mensuration of constant temperature and humidity page standard physical intensity by national standard.
2. the method being discongested raising straw pulp beating degree and intensity by strengthening according to claim 1, be is characterized in that: straw pulp is straw chemical pulp or Wheat Straw Pulp.
3. the method being discongested raising straw pulp beating degree and intensity by strengthening according to claim 1, be is characterized in that: it is 1500 ~ 5000r/min that step (2) strengthens the speed of discongesting discongested, processing time 5 ~ 40min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510709429.2A CN105401477B (en) | 2015-10-28 | 2015-10-28 | It is a kind of that the method for improving straw pulp beating degree and intensity is discongested by reinforcing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510709429.2A CN105401477B (en) | 2015-10-28 | 2015-10-28 | It is a kind of that the method for improving straw pulp beating degree and intensity is discongested by reinforcing |
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| CN105401477A true CN105401477A (en) | 2016-03-16 |
| CN105401477B CN105401477B (en) | 2017-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108169412A (en) * | 2017-11-28 | 2018-06-15 | 昆明理工大学 | It is a kind of to characterize the method that tobacco material discongests performance complexity in papermaking-method reconstituted tobaccos slurry |
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| CN1095779A (en) * | 1994-04-12 | 1994-11-30 | 黑龙江省萝北县人民政府 | Non-alkali paper making process |
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| CN108169412B (en) * | 2017-11-28 | 2020-11-17 | 昆明理工大学 | Method for representing difficulty degree of fluffing performance of tobacco raw materials in paper-making reconstituted tobacco slurry |
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