CN102268832A - Pulping and papermaking process for producing middle-grade and high-grade cultural paper by using larch chemical-mechanical pulp - Google Patents
Pulping and papermaking process for producing middle-grade and high-grade cultural paper by using larch chemical-mechanical pulp Download PDFInfo
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Abstract
The invention relates to a pulping and papermaking process for manufacturing bleaching chemical-mechanical pulp by using larch and producing middle-grade and high-grade cultural paper by using the chemical-mechanical pulp. The pulping and papermaking process is characterized by comprising the following steps of: harvesting the larch, removing peels and leaves from the larch, and chipping the larch; immersing the larch by using sodium sulfite aqueous solution; refining the immersed larch into uncolored chemical-mechanical pulp through two-section high-concentration defibrination and subsequent high-concentration defibrination; and performing two-section hydrogen peroxide bleaching to produce the middle-grade and high-grade cultural paper such as offset paper, duplicating paper and copper plate body paper. By the method, process parameters of the larch chemical-mechanical pulp and papermaking conditions of using the chemical-mechanical pulp are established through optimization, so that the larch can be applied to the middle-grade and high-grade cultural paper; therefore, a technical scheme is provided for effectively using larches in countries, such as China, Russia and the like.
Description
Technical field
The present invention relates to a kind made from larch floats the whitening machine slurry and uses thisization machine to starch the papermaking of the medium-to-high grade cultural paper of manufacturing paper with pulp.
Background technology
Larch is the Pinaceae needlebush, grows in the cold climate in the Northern Hemisphere.They are chief species of Russia and Canadian boreal forest, at northeast China also raised growth.That larchwood have is firm, waterproof and durable quality.But compare with dragon spruce and northern pine tree, larch has some inferior positions on papermaking is used, though fiber is long more coarse, and cell wall thickness, heartwood containing ratio height, and contain the flavonoids polyphenol substance, it is difficult to make boiling and bleaching all compare.Yet the global timber resources particularly shortage of needlebush makes papermaking circle personage constantly seek new seeds or original seeds is more effectively utilized, and this wherein just comprises larchen research interest, and is particularly in Canada, Russian and Chinese.
Therefore it is generally acknowledged that sulfate pulp-making is best suited for larchen pulping process, all is with sulfate pulp-making in the slurry factory that is raw material with the larch, but generally speaking, is that the slurry factory of raw material is seldom with the larch, and mainly in Russia.Most of Russia produce larch sulfate commercial pulp, and perhaps viscose in sulfate sheet lining and the corrugated liner, has only minority to produce the acid accumulator sulfite slurry, offers newsprint.The Northeast China has slurry factory of a few family to utilize larch production sulfate pulp, offers sack kraft paper and cardboard, though Canada utilizes the degree of larch slurrying not as good as Russia, shortage of Quebec timber and larchen plantation have driven the research of larch high yield pulp.The larch plantation of China is mainly based on larch-tree, and some research work concentrates on the sulfate pulp-making of larch-tree.China more and more payes attention to the production of high yield pulp in recent years, is used for Production and Packaging paper and cardboard.
Summary of the invention
Purpose of the present invention will be opened up the more application of larch in field of papermaking just, the application from the application extension of newsprint, sack kraft paper, corrugated paper to cultural paper, and adopt the high yield pulp technology of saving the forest reserves.The objective of the invention is to realize by technical scheme of the present invention.
First aspect the present invention relates to a kind ofly be used for the method for the change machine slurry that fine paper makes from larch preparation, may further comprise the steps:
A) with harvested larch peeling defoliation, be cut into wood chip then,
B) a certain amount of wood chip is packed in the retort, feed steam, decatize wood chip at least 5 minutes,
C) after the decatize, under greater than the temperature of 20 degree, wood chip was flooded 5 minutes with the maceration extract that mainly contains sodium sulfite at least, discharges maceration extract then,
D) impregnated wood chip is sent to screw extruder, with compression and remove excess liquid,
E) under the pressure that improves, with wood chip refining in high concentration plate mill of compression, obtaining having the paper pulp of required freedom,
F) by with peroxide bleaching and/or dithionite bleaching slurry, whiteness is reached more than 60%.
One preferred embodiment in, in the step b), the temperature of steam is 100-110 ℃, steaming time is 10-20 minute.
One preferred embodiment in, in the step c), weight in the over dry wood chip is benchmark, the addition of sodium sulfite is 20-30%, the ratio of the volume of maceration extract and the weight of wood chip is 5: 1 to 6: 1, dipping can carry out under 60 ℃ temperature 20-30 minute, and maceration extract during dipping circulates, and wherein the unit of the ratio of the weight of the volume of maceration extract and wood chip is for rising: kilogram.
One preferred embodiment in, step c) directly is elevated to temperature 130-150 ℃ after also randomly being included in dipping, carries out liquid and steams 5-30 minute, discharges the dipping black digestion liquid then, and the wood chip that liquid steamed is washed.Perhaps behind dipping, discharge maceration extract, feed 130-150 ℃ steam then, carried out decatize 5-10 minute.
One preferred embodiment in, in the step d), using compression ratio is two screw extruders of 1: 2 to 1: 4, between two screw extruders, randomly has 100-130 ℃ preheater.
One preferred embodiment in, in the step e), randomly carry out two sections high dense pressurized refinings, wherein first section pressure is 300mbar, second section pressure is 150mbar, the gap of adjusting between the mill is 200-500mlCSF with the freedom that obtains slurries.
One preferred embodiment in, randomly use two sections hydrogen peroxide bleachings in the step f), the condition of wherein said two sections hydrogen peroxide bleachings is identical or different, is respectively: 3%-5%H
2O
2, 1.5%-3%NaOH and other auxiliary agents.
One preferred embodiment in, described other auxiliary agents are an amount of sodium metasilicate, magnesium sulfate and DTPA.
Second aspect the invention still further relates to the change machine slurry that makes with method of the present invention.
The third aspect the invention still further relates to the change machine slurry application in fine paper that makes with method of the present invention, and its use amount is at least 5 weight %, between the preferred 10-20%, in total be benchmark with the slurry amount.
Fourth aspect the invention still further relates to a kind of fine paper, and it comprises at least 5 weight %, the change machine slurry that the usefulness method of the present invention of preferred 10-20% weight makes, in total be benchmark with the slurry amount.
The present invention mainly be for production that larch is applied to cultural paper provide a kind of may, promptly produce and float the whitening machine slurry.Larch mostly is a sulfate pulp-making at present, is mainly used in sack kraft paper.
The specific embodiment
Following term herein has following implication:
" change machine slurry " refers to chemi-mechanical pulp.
" white liquid " refers to and is used for larch wood chip impregnated chemical solution, also is sodium sulfite solution.
" black liquor " refers to the filtered fluid after larch wood chip dipping or the boiling, comprises the material and the remaining sodium sulfite of stripping from wood chip.
" over dry wood chip " refers to the weight of wood chip after 105 ℃ of oven dry, standard method ISO638.
" CSF " refers to Canadian Standard Freeness, promptly Canadian freedom, and it is a kind of measurement to Pulp Drainage Properties, standard method ISO5267-2.
" liquid steaming " refers to the liquid boiling.
" liquor ratio " refers to the ratio of liquid phase and solid phase, is the ratio between maceration extract volume and the over dry wood chip weight here, and unit is for rising: kilogram.
All liq when " maceration extract " refers to the wood chip dipping comprises white liquid (forming white liquid with an amount of water dilution sodium sulfite in advance), and the moisture that auxiliary agent and wood chip contain, described auxiliary agent is DTPA (diethylene triamine pentacetic acid (DTPA)) and/or AQ (anthraquinone) for example." starch dense " and refer to the over dry content of fiber in copying pulp material suspension.
" compression ratio " refers to the volume ratio before and after the wood chip extruding.
Of the present inventionly be used for the method for the change machine slurry that fine paper makes, may further comprise the steps from larch preparation:
A) with harvested larch peeling defoliation, be cut into wood chip then,
B) a certain amount of wood chip is packed in the retort, feed steam, decatize wood chip at least 5 minutes,
C) after the decatize, under greater than the temperature of 20 degree with wood chip with the maceration extract that mainly contains sodium sulfite at least 5 minutes, discharge maceration extract then,
D) impregnated wood chip is sent to screw extruder, with compression and remove excess liquid,
E) under the pressure that improves, with wood chip refining in high concentration plate mill of compression, obtaining having the paper pulp of required freedom,
F) by with peroxide bleaching and/or dithionite bleaching slurry, whiteness is reached more than 60%.
Preferably, in the step b), the temperature of steam is 100-110 ℃, and steaming time is 10-20 minute.
Preferably, in the step c), weight in the over dry wood chip is benchmark, the addition of sodium sulfite is 20-30%, the ratio of the volume of maceration extract and the weight of wood chip is 5: 1 to 6: 1, dipping can carry out under 60 ℃ temperature 20-30 minute, and maceration extract during dipping circulates, and wherein the unit of the ratio of the weight of the volume of maceration extract and wood chip is for rising: kilogram.
Preferably, the maceration extract of step c) also contains DTPA and/or AQ except sodium sulfite.
Preferably, step c) directly is elevated to temperature 130-150 ℃ after also randomly being included in dipping, carries out liquid and steams 5-30 minute, discharges the dipping black digestion liquid then, and the wood chip that liquid steamed is washed.Perhaps behind dipping, discharge maceration extract, feed 130-150 ℃ steam then, carried out decatize 5-10 minute.
Preferably, in the step d), the use compression ratio is two screw extruders of 1: 2 to 1: 4, between two screw extruders, randomly has 100-130 ℃ preheater.
Preferably, in the step e), randomly carry out two sections high dense pressurized refinings, wherein first section pressure is 300mbar, and second section pressure is 150mbar, and the gap of adjusting between the mill is 200-500mlCSF with the freedom that obtains slurries.
Preferably, randomly use two sections hydrogen peroxide bleachings in the step f), the condition of wherein said two sections hydrogen peroxide bleachings is identical or different, is respectively: 3%-5%H
2O
2, 1.5%-3%NaOH and other auxiliary agents.
Preferably, described other auxiliary agents are an amount of sodium metasilicate, magnesium sulfate and DTPA.
Second aspect the invention still further relates to the change machine slurry that makes with method of the present invention.
The third aspect the invention still further relates to the change machine slurry application in fine paper that makes with method of the present invention, and its use amount is at least 5 weight %, between the preferred 10-20%, in total be benchmark with the slurry amount.
Fourth aspect the invention still further relates to a kind of fine paper, and it comprises at least 5 weight %, the change machine slurry that the usefulness method of the present invention of preferred 10-20% weight makes, in total be benchmark with the slurry amount.
More specifically, the method with making of larch machine slurry of the present invention may further comprise the steps:
A) with larch harvesting back peeling defoliation, be whittled into average 20-22 millimeters long, the wood chip of 5.8 millimeters thick through chipping machine; And adopt the standard method of SCAN-CM 40:01 to filter out accepted chips.
B) a certain amount of wood chip is packed into wood chip steams in the jar in advance, feeds the steam of 100-110 ℃ (preferably being 105 ℃), decatize 10-20 minute;
C) in advance the sodium sulfite powder is mixed with the aqueous solution of 30-60g/L, promptly white liquid;
D) white liquid is joined wood chip by certain consumption and liquor ratio and steam in advance in the jar, add the dipping temperature of hot mixt, keep white liquid constantly to circulate, flooded 20-30 minute to 40-60 ℃ (preferably being 60 ℃); Weight in the over dry wood chip is benchmark, the consumption of described sodium sulfite is 20-30 weight %, and liquor ratio is 5: 1 to 6: 1, preferably is 6: 1, wherein liquor ratio refers to the ratio between the weight of the cumulative volume of white liquid and water and over dry wood chip, and unit is for rising: kilogram;
E) behind the dipping, directly discharge the dipping black liquor,
F) by the spiral pusher wood chip is sent to one section screw extruder, compression ratio is 1: 2～4, extrudes liquid.Preheater by 100-130 ℃ (preferably being 105 ℃ or 130 ℃) then, enter second section screw extruder, compression ratio is 1: 2～4 (preferably being 1: 2), last wood chip enters high concentration plate mill, starch dense 25～35%, by adjusting disk mill gap, produce the slurry that freedom is 200-500ml CSF through two sections pressurized refinings, wherein first of two sections pressurized refinings section pressure is 250-350mbar (preferred 300mbar), second section pressure is 100-200mbar (preferred 150mbar), this slurry obtains the change machine slurry that freedom is approximately 100-200mlCSF further by high consistency refining (starching dense 15-25%).
G) with the larchization machine slurry process bleaching that obtains, the ISO whiteness is reached more than 65%.
Preferably, described method directly is warmed up to 130-150 ℃ after also randomly being included in dipping in step e), carries out liquid and steams 5-30 minute, after liquid steams and finishes, discharges the dipping black digestion liquid again, and the wood chip that liquid steamed is washed.Perhaps behind dipping, discharge maceration extract, feed 130-150 ℃ steam then, carried out decatize 5-10 minute.
Preferably, described method also is included in uses two sections hydrogen peroxide bleachings in the step g), the ISO whiteness is reached more than 65%, and the condition of wherein said two sections hydrogen peroxide bleachings is identical or different, for: 3%-5%H
2O
2, 1.5%-3%NaOH and other auxiliary agents.
Preferably, described other auxiliary agents are an amount of sodium metasilicate, magnesium sulfate and DTPA.
Preferably, the condition of two sections hydrogen peroxide bleachings is respectively: first section 5%H
2O
2/ 2.5%NaOH/3.3%Na
2SiO
3/ 0.05%MgSO
4/ 0.4%DTPA, second section 3%H
2O
2/ 1.9%NaOH/2.1%Na
2SiO
3/ 0.05%MgSO
4/ 0.4%DTPA.
Preferably, the condition of two sections hydrogen peroxide bleachings is respectively: two sections are 5%H
2O
2/ 2.5%NaOH/3.3%Na
2SiO
3/ 0.05%MgSO
4/ 0.4%DTPA.
Preferably, be benchmark in the weight of over dry wood chip, the consumption of described sodium sulfite is 20 weight % or 30 weight %
Preferably, first section pressure of described two sections pressurized refinings is 300mbar, and second section pressure is 150mbar.
Further set forth the present invention below in conjunction with specific embodiment.But, should be understood that these embodiment only are used to the present invention is described and do not constitute limitation of the scope of the invention.The test method of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.Except as otherwise noted, all percentages are weight percentage.
Application example 1:
With Russian larch (from Muscovite Havarovsk and Baikal, the century-old age of tree) harvesting, peeling defoliation, chip after, getting 453.9kg over dry wood chip (the over dry content 49.5%) wood chip of packing into steams in the jar in advance, (pressure and temperature of saturated vapor has relation to feed 105 ℃ saturated vapor, 105 ℃ pressure is 0.12Mpa, feeding speed is inessential, just be full of can), decatize 10 minutes.By liquor ratio (6: 1) and sodium sulfite addition 20.4% and the pre-configured white liquid 2260L (concentration 41g/L) of DTPA addition 0.51% (all based on the over dry wood chip) adding, moisture (463L) in DTPA 1.78L (DTPA with 40% weight ratio calculates concentration 1.3g/L) and the wood chip is formed maceration extract (about altogether 2723L).Be warmed up to 60 ℃, dipping is 30 minutes in the process of constantly circulation.The dipping black liquor is discharged in the dipping back.Wood chip directly is sent to one section screw extruder by the spiral pusher, and compression ratio is 1: 2.Enter two sections screw extruders by preheater (130 ℃) then, compression ratio is 1: 2.Last wood chip enters high concentration plate mill (starching dense 30%).By regulating abrasive disk space (cutter of manually advancing and retreat is regulated abrasive disk space, for example, is adjusted to 0.398mm from 0.194mm), (pressure is respectively 300mbar, and 150mbar) producing freedom is the change machine slurry of about 200mlCSF through two sections pressurized refinings.This change machine slurry further passes through the change machine slurry that high consistency refining (starching dense 20%) obtains the about 100mlCSF of freedom.
The larchization machine slurry that obtains is through two sections hydrogen peroxide bleachings (first section 5%H
2O
2/ 2.5%NaOH/3.3%Na
2SiO
3/ 0.05%MgSO
4/ 0.4%DTPA, second section 3%H
2O
2/ 1.9%NaOH/2.1%Na
2SiO
3/ 0.05%MgSO
4/ 0.4%DTPA, the ISO whiteness reaches 75.7%.Other main performances of this slurry have: bulk 2.17cm
3/ g, tensile strength index 34.4Nm/g, tear index 7.5mNm2/g.Test all according to standard method ISO3688 ISO5269-1 and ISO5270.
Experimental result shows, larchization machine slurry after the bleaching adds high-grade culture to after replacing 10% commodity poplar machine slurry in the prescription of paper with 10% ratio (total relatively oven dry stock), improve paper bulk and deflection, and do not influenced other paper properties.
Be the result of laboratory lab scale below:
Wherein quantitatively measure according to the ISO536 method; Thickness is measured according to the ISO534 method; Ash content is measured according to the ISO1762 method; The tensile strength index is measured according to the ISO5270 method; Tear index is measured according to the ISO1974 method; Bending break stiffness is measured according to the ISO2493 method; The ISO whiteness is measured according to the ISO2470 method; Opacity is measured according to the ISO2471 method.
Application example 2:
With the harvesting of Russian larch, peeling defoliation, chip after, get 451kg over dry wood chip (the over dry content 61.2%) wood chip of packing into and steam in advance in the jar, feed 105 ℃ steam, decatize 20 minutes.By liquor ratio (6: 1) and sodium sulfite addition 30% and the pre-configured white liquid 2420L (concentration 55.9g/L) of DTPA addition 0.75% (all based on the over dry wood chip) adding, moisture (286L) in DTPA 2.6L (DTPA with 40% weight ratio calculates concentration 1.3g/L) and the wood chip is formed maceration extract (about altogether 2706L).Be warmed up to 60 ℃, dipping is 30 minutes in the process of constantly circulation.The dipping black liquor is discharged in the dipping back.The steam that feeds 130 ℃ then carried out decatize 5 minutes.After the decatize, wood chip directly is sent to one section screw extruder by the spiral pusher, extrudes liquid, and compression ratio is 1: 2.Enter two sections screw extruders by preheater (130 ℃) then, compression ratio is 1: 2.Last wood chip enters high concentration plate mill (starching dense 30%%).By control disk mill gap (it is 0.202mm that the cutter of manually advancing and retreat is controlled abrasive disk space)), (pressure is respectively 300mbar, and 150mbar) producing freedom is the change machine slurry of about 300mlCSF through two sections pressurized refinings.This change machine slurry further passes through the change machine slurry that high consistency refining (20%) obtains the about 100mlCSF of freedom.
The larchization machine slurry that obtains is through two sections hydrogen peroxide bleachings (first section 5%H2O2/2.5%NaOH/3.3%Na2SiO3/0.05%MgSO4/0.4%DTPA, second section 3%H2O2/1.9%NaOH/2.1%Na2SiO3/0.05%MgSO4/0.4%DTPA), the ISO whiteness reaches 74.1%.Other main performances of this slurry have: bulk 2.06cm
3/ g, tensile strength index 40.6Nm/g, tear index 6.2mNm2/g.
Experimental result shows, larchization machine slurry after the bleaching adds high-grade culture to after replacing 10% commodity poplar machine slurry and/or 10% staple fibre chemical wood pulp in the prescription of paper with the ratio (total relatively oven dry stock) of 10-20%, most of paper properties all makes moderate progress, and has kept the paper total quality.
Be the result of laboratory lab scale below:
Application example 3:
With the harvesting of Russian larch, peeling defoliation, chip after, get 419.9kg over dry wood chip (the over dry content 58.4%) wood chip of packing into and steam in advance in the jar, feed 105 ℃ steam, decatize 20 minutes.By liquor ratio (6: 1) and sodium sulfite addition 20% and DTPA addition 0.51% and the pre-configured white liquid 2220L (concentration 38.6g/L) of AQ addition 0.10% (all based on the over dry wood chip) adding, (DTPA with 40% weight ratio calculates DTPA 1.65L, concentration 1.3g/L), the moisture (299L) in AQ 0.933kg (concentration 45% weight ratio) and the wood chip is formed maceration extract (about altogether 2519L).Be warmed up to 60 ℃, dipping is 30 minutes in the process of constantly circulation.Behind the dipping, continue to be warmed up to 150 ℃, boiling is 30 minutes under liquid circulation, discharges black liquor then, uses twice of clear water displacement washing.Wood chip after the washing directly is sent to one section screw extruder by the spiral pusher, extrudes liquid, and compression ratio is 1: 2.Enter two sections screw extruders by preheater (130 ℃) then, compression ratio is 1: 2.Last wood chip enters high concentration plate mill (starching dense 30%).(cutter of manually advancing and retreat is regulated abrasive disk space by adjusting disk mill gap, for example, be adjusted to 0.204mm from 0.189mm), (pressure is respectively 300mbar, and 150mbar) defibrination (starching dense is 30%) is produced the change machine slurry that freedom is about 500mlCSF through two sections pressure.This change machine slurry further passes through the change machine slurry that high consistency refining (starching dense 20%) obtains the about 200mlCSF of freedom.
(two sections are 5%H to the larchization machine slurry that obtains through two sections hydrogen peroxide bleachings
2O
2/ 2.5%NaOH/3.3%Na
2SiO
3/ 0.05%MgSO
4/ 0.4%DTPA, the ISO whiteness reaches 65.3%.Other main performances of this slurry have: bulk 1.86cm
3/ g, tensile strength index 43.1Nm/g, tear index 6.7mNm2/g.
Experimental result shows, larchization machine slurry after the bleaching adds high-grade culture to after replacing 10% commodity poplar machine slurry and/or 10% long fiber/staple fibre chemical wood pulp in the prescription of paper with the ratio (total relatively oven dry stock) of 10-20%, except whiteness 4 units (still at ISO more than 86%) that descend, unobvious other paper properties that do not influence.The paper total quality reaches medium-to-high grade cultural paper requirement.
Be the result of laboratory lab scale below:
Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after having read above-mentioned teachings of the present invention, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Claims (11)
1. one kind is used for the method for the change machine slurry that fine paper makes from larch preparation, may further comprise the steps:
A) with harvested larch peeling defoliation, be cut into wood chip then,
B) a certain amount of wood chip is packed in the retort, feed steam, decatize wood chip at least 5 minutes,
C) after the decatize, under greater than the temperature of 20 degree, wood chip was flooded 5 minutes with the maceration extract that mainly contains sodium sulfite at least, discharges maceration extract then,
D) impregnated wood chip is sent to screw extruder, with compression and remove excess liquid,
E) under the pressure that improves, with wood chip refining in high concentration plate mill of compression, obtaining having the paper pulp of required freedom,
F) by with hydrogen peroxide bleaching and/or dithionite bleaching slurry, whiteness is reached more than 60%.
2. method as claimed in claim 1 is characterized in that, in the step b), the temperature of steam is 100-110 ℃, and steaming time is 10-20 minute.
3. method as claimed in claim 1, it is characterized in that, in the step c), weight in the over dry wood chip is benchmark, the addition of sodium sulfite is 20-30%, and the ratio of the weight of maceration extract volume and wood chip is 5: 1 to 6: 1, and dipping can carry out under 60 ℃ temperature 20-30 minute, maceration extract during dipping circulates, and wherein the unit of the ratio of the weight of the volume of maceration extract and wood chip is for rising: kilogram.
4. method as claimed in claim 1 is characterized in that, step c) directly is elevated to temperature 130-150 ℃ after also randomly being included in dipping, carries out liquid and steams 5-30 minute, discharges the dipping black digestion liquid then, and the wood chip that liquid steamed is washed; Perhaps behind dipping, discharge maceration extract, feed 130-150 ℃ steam then, carried out decatize 5-10 minute.
5. method as claimed in claim 1 is characterized in that, in the step d), the use compression ratio is two screw extruders of 1: 2 to 1: 4, between two screw extruders, randomly has 100-130 ℃ preheater.
6. method as claimed in claim 1 is characterized in that, in the step e), randomly carry out two sections high dense pressurized refinings, wherein first section pressure is 300mbar, and second section pressure is 150mbar, and the gap of adjusting between the mill is 200-500mlCSF with the freedom that obtains slurries.
7. method as claimed in claim 1 is characterized in that, randomly uses two sections hydrogen peroxide bleachings in the step f), and the condition of wherein said two sections hydrogen peroxide bleachings is identical or different, is respectively: 3%-5%H
2O
2, 1.5%-3%NaOH and other auxiliary agents.
8. method as claimed in claim 7 is characterized in that, described other auxiliary agents are an amount of sodium metasilicate, magnesium sulfate and DTPA.
9. the change machine slurry that makes of the method for claim 1.
10. the change machine slurry application in fine paper that makes of the method for claim 1, its use amount is at least 5 weight %, between the preferred 10-20%, in total be benchmark with the slurry amount.
11. a fine paper, it comprises at least 5 weight %, the change machine slurry that the method for claim 1 of preferred 10-20% weight makes, in total be benchmark with the slurry amount.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107414989A (en) * | 2017-07-31 | 2017-12-01 | 四川永丰纸业股份有限公司 | A kind of method that displacement cooking produces high yield pulp1 true qualities bamboo pulp |
| CN111021124A (en) * | 2019-12-27 | 2020-04-17 | 广西大学 | Method for reducing yellowing value of sulfonated chemi-mechanical pulp paper by adopting α -amylase pretreatment |
| CN111021131A (en) * | 2019-12-27 | 2020-04-17 | 广西大学 | Method for reducing yellowing value of sulfonated chemi-mechanical pulp paper by adopting protease pretreatment |
| CN115710839A (en) * | 2022-11-19 | 2023-02-24 | 山东天和纸业有限公司 | Production method of ultrahigh-bulk printing paper |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0639434B2 (en) * | 1993-08-18 | 2004-01-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for the manufacture of medium density wood fibre boards (MDF) |
| CN1563564A (en) * | 2004-03-16 | 2005-01-12 | 山东轻工业学院 | Method for producing chemical wood pulp |
-
2011
- 2011-07-15 CN CN 201110197834 patent/CN102268832B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0639434B2 (en) * | 1993-08-18 | 2004-01-07 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for the manufacture of medium density wood fibre boards (MDF) |
| CN1563564A (en) * | 2004-03-16 | 2005-01-12 | 山东轻工业学院 | Method for producing chemical wood pulp |
Non-Patent Citations (2)
| Title |
|---|
| 石海强 等: "浅谈CTMP制浆技术的研究进展", 《黑龙江造纸》, no. 3, 30 September 2002 (2002-09-30) * |
| 管永刚 等: "对我国落叶松制浆的展望", 《国际造纸》, vol. 19, no. 3, 30 June 2000 (2000-06-30) * |
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| CN111021124A (en) * | 2019-12-27 | 2020-04-17 | 广西大学 | Method for reducing yellowing value of sulfonated chemi-mechanical pulp paper by adopting α -amylase pretreatment |
| CN111021131A (en) * | 2019-12-27 | 2020-04-17 | 广西大学 | Method for reducing yellowing value of sulfonated chemi-mechanical pulp paper by adopting protease pretreatment |
| CN115710839A (en) * | 2022-11-19 | 2023-02-24 | 山东天和纸业有限公司 | Production method of ultrahigh-bulk printing paper |
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