CN101440586B - Paper-making method by mechanical fibration of maize straw - Google Patents
Paper-making method by mechanical fibration of maize straw Download PDFInfo
- Publication number
- CN101440586B CN101440586B CN2008102365442A CN200810236544A CN101440586B CN 101440586 B CN101440586 B CN 101440586B CN 2008102365442 A CN2008102365442 A CN 2008102365442A CN 200810236544 A CN200810236544 A CN 200810236544A CN 101440586 B CN101440586 B CN 101440586B
- Authority
- CN
- China
- Prior art keywords
- mass ratio
- defibrator
- raw material
- slurry
- cornstalk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The invention relates to a method for making paper by mechanical-split fiberization of corn stalks. The method comprises: a first step of crushing and cutting a corn stalk raw material and removing sand and dust in the raw material by water washing; a second step of filtering and dehydrating the raw material processed by the first step and adding a penetrating agent into the raw material for pre-impregnation; a third step of delivering the corn stalk raw material subjected to pre-impregnation to a thermofiner for coarse grinding for splitting the stalks into pulp; a fourth step of diluting, screening, squeezing and filtering the coarsely ground pulp for separating coarse pulp and fine pulp; a fifth step of delivering the coarse pulp screened out to the thermofiner for hot grinding again and delivering the hotly ground coarse pulp and the fine pulp into a refiner for refining; a sixth step of separating fiber pulp obtained after fine grinding by screening, delivering coarse pulp into a secondary pulping machine for pulping, and squeezing, filtering and condensing the fine pulp for further use in paper making; and a seventh step of flowing the pulp onto a wire and making paper with a paper making machine to produce paper case boards or high-strength semi-chemical corrugated paper. The method has the characteristics of low cost, environmental protection, and 70 to 80 percent reduction in water consumption.
Description
Technical field
The invention belongs to string paper technical field, be specifically related to a kind of cornstalk Mechanical Method and divide the papermaking process of silk fiberization.
Background technology
One of maximum purposes of string is exactly to be used for papermaking, and rice wheat straw bar is the main raw material of China's papermaking always.Because rice wheat straw bar is fewer and feweri in recent years, its price is more and more higher, thereby causes the cost of papermaking more and more higher.Utilize the papermaking of cornstalk fibration once to have the people to carry out some researchs in China.Its method mainly is to adopt chemical method fibration technology, and will carry out complicated skin stalk separation circuit, passes through processing such as boiling, washing, screening, bleaching again, owing to production cost height, the low using value that never has of yield.
The major defect that chemical method exists is: seriously polluted, and unresolved environmental issue; Complex manufacturing; Become the paper yield low, the fibration rate is generally at 45%-50%; The production cost height.
And cornstalk is seldom used by papermaking too much because of leaf and myelomere impurity, in addition, the paper of producing with the cornstalk fibration problems such as difficulty of decolouring in addition, come unstuck, therefore be not suitable for producing cultural paper, simultaneously, because the cornstalk average fiber length is short, intensity is low, the skin stalk is difficult to be separated, difficult reason of breaking fiber also should not be used to produce high-grade unbleached paper, as sack kraft paper, brown paper.Therefore,, almost treated coldly comprehensively, be nobody shows any interest in for a long time for this special papermaking material of cornstalk.
Summary of the invention
In order to overcome the deficiency of above-mentioned original technology, the object of the present invention is to provide a kind of cornstalk Mechanical Method to divide the papermaking process of silk producd fibers, have that high yield, cost are low, characteristics of environmental protection, water saving 70%～80%.
To achieve these goals, the technical solution used in the present invention is: a kind of cornstalk Mechanical Method is divided the papermaking process of silk fiberization, may further comprise the steps:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 25mm～30mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 1%～3% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 150～160 ℃, and penetration period is 2～3 hours.
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 15 ° of SR～20 ° SR, input concentration mass ratio during the defibrator corase grind is 25%～30%, the defibrination temperature is 110～130 ℃, defibrator corase grind power is 50～1000Kw, and the corase grind time is: from being fed to discharging 1～2 minute.
In the 4th step, thin up slurry concentration mass ratio to 1.5%～2.5%, and the screen cloth press filtration of process 0.25mm～0.30mm divide and sift out thick slurry and screened stock.
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 20%～25%, the defibrination temperature is 90～110 ℃, the beating degree of mill disposed slurry is 25 ° of SR～30 ° SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 35 ° of SR～38 ° SR.
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 1.5%～2.0%, and be the screen centrifuge screening the pulp of 0.15mm～0.20mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock is through press filtration and be concentrated to 3.0% of the mass ratio～4.0% o'clock standby paper of copying.
In the 7th step, copy paper with two cylinders of 1575mm～2400mm or fourdrinier machine online and produce boxboard or high-strength corrugated base paper.Can select different paper machines according to the output size.
The cardboard of being produced has higher intensity when making carton, wherein the fracture length of base board is 3.80～3.92km, and ring crush index is 7.5～10.0N.m/g, is better than the cardboard that other fibration method is produced.
In addition, the adding mass ratio is 30%～40% secondary stock in above-mentioned the 6th step, and waste paper material concentration mass ratio is 3%～5%, can produce its physical property testing result to be: quantitative 150g/m
2, vertical fracture length 〉=4.0km, tightness 〉=0.53g/m
3, horizontal ring crush index 〉=8.5N.m/g, burst index 〉=2.5kPa.m
2The cardboard of/g.
The present invention is because the employing cornstalk is a raw material of papermaking fiber, the cost of producing paper only is 900～1200 yuan/ton, have the low characteristics of cost, because adopting hot water is that liquid immersion cornstalk, Mechanical Method are exchanged views the branch silk fiber and turned to the master, the fiber yield rate of making can reach 65%～75%, the pH value of its waste water is 6.8～7.3, and the leachable in the waste water mainly is some a spot of pectin and carbohydrate organic matter, after precipitation flocculation, can recycle or as agricultural irrigation, have that cost is low, characteristics of environmental protection, water saving 70%～80%.
The specific embodiment
Below in conjunction with specific embodiment production method of the present invention is described in further detail.
Embodiment one
A kind of cornstalk Mechanical Method is divided the papermaking process of silk fiberization, may further comprise the steps:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 25mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 1% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 150 ℃, and penetration period is 2 hours.
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 15 ° of SR, input concentration mass ratio during the defibrator corase grind is 25%, the defibrination temperature is 110 ℃, defibrator corase grind power is 50Kw, and the corase grind time is: from being fed to discharging 1 minute.
In the 4th step, thin up slurry concentration mass ratio to 1.5%, and the screen cloth press filtration of process 0.25mm divide and sift out thick slurry and screened stock.
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 20%, the defibrination temperature is 90 ℃, the beating degree of mill disposed slurry is 25 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 35 ° of SR.
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 1.5%, and be the screen centrifuge screening the pulp of 0.15mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 3.0% o'clock standby paper of copying of mass ratio.
The 7th step, on the two cylinder twin-tub paper machines of 1880mm, copy high-strength corrugated base paper, that copy paper quantitatively is 115g/m
2, tightness is 0.53g/cm
3, the fracture length in the tensile strength of its paper is 3.80km, ring crush index is 10.N.m/g.
Embodiment two
A kind of cornstalk Mechanical Method is divided the papermaking process of silk fiberization, and its production stage comprises:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 28mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 2% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 155 ℃, and penetration period is 2.5 hours.
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 17.5 ° of SR, input concentration mass ratio during the defibrator corase grind is 27.5%, the defibrination temperature is 120 ℃, defibrator corase grind power is 475Kw, and the corase grind time is: from being fed to discharging 1.5 minutes.
In the 4th step, thin up slurry concentration mass ratio to 2%, and the screen cloth press filtration of process 0.275mm divide and sift out thick slurry and screened stock.
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 23%, the defibrination temperature is 110 ℃, the beating degree of mill disposed slurry is 27.5 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 36.5 ° of SR.
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up is 1.75% to the concentration mass ratio, and be the screen centrifuge screening the pulp of 0.18mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 3.5% o'clock standby paper of copying of mass ratio.
The 7th step, to copy paper in the online of 1575mm twin cylinder machine and produce boxboard or high-strength corrugated base paper, the quantitative of its paper is 250g/m
2, fracture length 3.87km, ring crush index are 8.5N.m/g, burst index is 2.5kPa.m
2/ g.
Embodiment three
A kind of cornstalk Mechanical Method is divided the papermaking process of silk fiberization, and its production stage comprises:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 30mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 3% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 160 ℃, and penetration period is 3 hours.
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 20 ° of SR, input concentration mass ratio during the defibrator corase grind is 30%, the defibrination temperature is 130 ℃, defibrator corase grind power is 1000Kw, and the corase grind time is: from being fed to discharging 2 minutes.
In the 4th step, thin up slurry concentration mass ratio to 2.5%, and the screen cloth press filtration of process 0.30mm divide and sift out thick slurry and screened stock.
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 25%, the defibrination temperature is 110 ℃, the beating degree of mill disposed slurry is 30 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 38 ° of SR.
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 2.0%, and be the screen centrifuge screening the pulp of 0.20mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 4.0% o'clock standby paper of copying of mass ratio.
The 7th step, on the 2400mm fourdrinier machine, copy high-strength corrugated base paper, that copy paper quantitatively is 110g/m
2, tightness is 0.52g/cm
3, the fracture length in the tensile strength of its paper is 3.92km, ring crush index is 7.5N.m/g.
Embodiment four
A kind of cornstalk Mechanical Method is divided the papermaking process of silk fiberization, and its production stage comprises:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 25mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 1% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 150 ℃, and penetration period is 2 hours.
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 15 ° of SR, input concentration mass ratio during the defibrator corase grind is 25%, the defibrination temperature is 110 ℃, defibrator corase grind power is 50Kw, and the corase grind time is: from being fed to discharging 1 minute.
In the 4th step, thin up slurry concentration mass ratio to 1.5%, and the screen cloth press filtration of process 0.25mm divide and sift out thick slurry and screened stock.
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 20%, the defibrination temperature is 90 ℃, the beating degree of mill disposed slurry is 25 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 35 ° of SR.
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 1.5%, and be the screen centrifuge screening the pulp of 0.15mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 3.0% o'clock standby paper of copying of mass ratio.
In addition, the adding mass ratio is 30% secondary stock in this step, and waste paper material concentration mass ratio is 3%, and the cornstalk slurry becomes the mixing pulping with secondary stock and prepares to copy paper.
The 7th step, on the two cylinder twin-tub paper machines of 1880mm, copy high-strength corrugated base paper, that copy paper quantitatively is 150g/m
2, vertical fracture length 〉=4.0km, tightness 〉=0.53g/m
3, horizontal ring crush index 〉=8.5N.m/g, burst index 〉=2.5kPa.m
2/ g.
Embodiment five
A kind of cornstalk Mechanical Method is divided the papermaking process of silk fiberization, and its production stage comprises:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 28mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 2% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 155 ℃, and penetration period is 2.5 hours.
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 17.5 ° of SR, input concentration mass ratio during the defibrator corase grind is 27.5%, the defibrination temperature is 120 ℃, defibrator corase grind power is 475Kw, and the corase grind time is: from being fed to discharging 1.5 minutes.
In the 4th step, thin up slurry concentration mass ratio to 2%, and the screen cloth press filtration of process 0.275mm divide and sift out thick slurry and screened stock.
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 23%, the defibrination temperature is 110 ℃, the beating degree of mill disposed slurry is 27.5 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 36.5 ° of SR.
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up is 1.75% to the concentration mass ratio, and be the screen centrifuge screening the pulp of 0.18mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 3.5% o'clock standby paper of copying of mass ratio.
In addition, the adding mass ratio is 35% secondary stock in this step, and waste paper material concentration mass ratio is 3.5%, and the cornstalk slurry becomes the mixing pulping with secondary stock and prepares to copy paper.
The 7th step, to copy paper in the online of 1575mm twin cylinder machine and produce boxboard or high-strength corrugated base paper, the quantitative of its paper is 250g/m
2, vertical fracture length 〉=4.0km, tightness 〉=0.53g/m
3, horizontal ring crush index 〉=8.5N.m/g, burst index 〉=2.5kPa.m
2/ g.
Embodiment six
A kind of cornstalk Mechanical Method is divided the papermaking process of silk fiberization, and its production stage comprises:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 30mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 3% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 160 ℃, and penetration period is 3 hours.
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 20 ° of SR, input concentration mass ratio during the defibrator corase grind is 30%, the defibrination temperature is 130 ℃, defibrator corase grind power is 1000Kw, and the corase grind time is: from being fed to discharging 2 minutes.
In the 4th step, thin up slurry concentration mass ratio to 2.5%, and the screen cloth press filtration of process 0.30mm divide and sift out thick slurry and screened stock.
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 25%, the defibrination temperature is 110 ℃, the beating degree of mill disposed slurry is 30 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 38 ° of SR.
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 2.0%, and be the screen centrifuge screening the pulp of 0.20mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 4.0% o'clock standby paper of copying of mass ratio.
In addition, the adding mass ratio is 40% secondary stock in this step, and waste paper material concentration mass ratio is 4%, and the cornstalk slurry becomes the mixing pulping with secondary stock and prepares to copy paper.
The 7th step, on the 2400mm fourdrinier machine, copy high-strength corrugated base paper, that copy paper quantitatively is 110g/m
2, vertical fracture length 〉=4.0km, tightness 〉=0.53g/m
3, horizontal ring crush index 〉=8.5N.m/g, burst index 〉=2.5kPa.m
2/ g.
Claims (8)
1. a cornstalk Mechanical Method is divided the papermaking process of silk fiberization, it is characterized in that, may further comprise the steps:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 25mm～30mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 1%～3% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 150～160 ℃, and penetration period is 2～3 hours;
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 15 ° of SR～20 ° SR, input concentration mass ratio during the defibrator corase grind is 25%～30%, the defibrination temperature is 110～130 ℃, defibrator corase grind power is 50～1000Kw, and the corase grind time is: from being fed to discharging 1～2 minute;
In the 4th step, thin up slurry concentration mass ratio to 1.5%～2.5%, and the screen cloth press filtration of process 0.25mm～0.30mm divide and sift out thick slurry and screened stock;
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 20%～25%, the defibrination temperature is 90～110 ℃, the beating degree of mill disposed slurry is 25 ° of SR～30 ° SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 35 ° of SR～38 ° SR;
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 1.5%～2.0%, and be the screen centrifuge screening the pulp of 0.15mm～0.20mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock is through press filtration and be concentrated to 3.0% of the mass ratio～4.0% o'clock standby paper of copying;
In the 7th step, copy paper with two cylinders of 1575mm～2400mm or fourdrinier machine online and produce boxboard or high-strength corrugated base paper.
2. a kind of cornstalk Mechanical Method according to claim 1 is divided the papermaking process of silk fiberization, it is characterized in that, the adding mass ratio is 30%～40% secondary stock in described the 6th step, and waste paper material concentration mass ratio is 3%～5%.
3. a kind of cornstalk Mechanical Method according to claim 1 is divided the papermaking process of silk fiberization, it is characterized in that, may further comprise the steps:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 25mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 1% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 150 ℃, and penetration period is 2 hours;
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 15 ° of SR, input concentration mass ratio during the defibrator corase grind is 25%, the defibrination temperature is 110 ℃, defibrator corase grind power is 50Kw, and the corase grind time is: from being fed to discharging 1 minute;
In the 4th step, thin up slurry concentration mass ratio to 1.5%, and the screen cloth press filtration of process 0.25mm divide and sift out thick slurry and screened stock;
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 20%, the defibrination temperature is 90 ℃, the beating degree of mill disposed slurry is 25 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 35 ° of SR;
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 1.5%, and be the screen centrifuge screening the pulp of 0.15mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 3.0% o'clock standby paper of copying of mass ratio;
The 7th step, on the two cylinder twin-tub paper machines of 1880mm, copy high-strength corrugated base paper, that copy paper quantitatively is 115g/m
2, tightness is 0.53g/cm
3, the fracture length in the tensile strength of its paper is 3.80km, ring crush index is 10N.m/g.
4. a kind of cornstalk Mechanical Method according to claim 1 is divided the papermaking process of silk fiberization, it is characterized in that, may further comprise the steps:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 28mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 2% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 155 ℃, and penetration period is 2.5 hours;
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 17.5 ° of SR, input concentration mass ratio during the defibrator corase grind is 27.5%, the defibrination temperature is 120 ℃, defibrator corase grind power is 475Kw, and the corase grind time is: from being fed to discharging 1.5 minutes;
In the 4th step, thin up slurry concentration mass ratio to 2%, and the screen cloth press filtration of process 0.275mm divide and sift out thick slurry and screened stock;
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 23%, the defibrination temperature is 110 ℃, the beating degree of mill disposed slurry is 27.5 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 36.5 ° of SR;
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up is 1.75% to the concentration mass ratio, and be the screen centrifuge screening the pulp of 0.18mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 3.5% o'clock standby paper of copying of mass ratio;
The 7th step, to copy paper in the online of 1575mm twin cylinder machine and produce boxboard or high-strength corrugated base paper, the quantitative of its paper is 250g/m
2, fracture length 3.87km, ring crush index are 8.5N.m/g, burst index is 2.5kPa.m
2/ g.
5. a kind of cornstalk Mechanical Method according to claim 1 is divided the papermaking process of silk fiberization, it is characterized in that, may further comprise the steps:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 30mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 3% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 160 ℃, and penetration period is 3 hours;
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 20 ° of SR, input concentration mass ratio during the defibrator corase grind is 30%, the defibrination temperature is 130 ℃, defibrator corase grind power is 1000Kw, and the corase grind time is: from being fed to discharging 2 minutes;
In the 4th step, thin up slurry concentration mass ratio to 2.5%, and the screen cloth press filtration of process 0.30mm divide and sift out thick slurry and screened stock;
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 25%, the defibrination temperature is 110 ℃, the beating degree of mill disposed slurry is 30 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 38 ° of SR;
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 2.0%, and be the screen centrifuge screening the pulp of 0.20mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 4.0% o'clock standby paper of copying of mass ratio;
The 7th step, on the 2400mm fourdrinier machine, copy high-strength corrugated base paper, that copy paper quantitatively is 110g/m
2, tightness is 0.52g/cm
3, the fracture length in the tensile strength of its paper is 3.92km, ring crush index is 7.5N.m/g.
6. a kind of cornstalk Mechanical Method according to claim 1 is divided the papermaking process of silk fiberization, it is characterized in that, may further comprise the steps:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 25mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 1% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 150 ℃, and penetration period is 2 hours;
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 15 ° of SR, input concentration mass ratio during the defibrator corase grind is 25%, the defibrination temperature is 110 ℃, defibrator corase grind power is 50Kw, and the corase grind time is: from being fed to discharging 1 minute;
In the 4th step, thin up slurry concentration mass ratio to 1.5%, and the screen cloth press filtration of process 0.25mm divide and sift out thick slurry and screened stock;
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 20%, the defibrination temperature is 90 ℃, the beating degree of mill disposed slurry is 25 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 35 ° of SR;
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 1.5%, and be the screen centrifuge screening the pulp of 0.15mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 3.0% o'clock standby paper of copying of mass ratio;
In addition, the adding mass ratio is 30% secondary stock in this step, and waste paper material concentration mass ratio is 3%, and the cornstalk slurry becomes the mixing pulping with secondary stock and prepares to copy paper;
The 7th step, on the two cylinder twin-tub paper machines of 1880mm, copy high-strength corrugated base paper, that copy paper quantitatively is 150g/m
2, vertical fracture length 〉=4.0km, tightness 〉=0.53g/m
3, horizontal ring crush index 〉=8.5N.m/g, burst index 〉=2.5kPa.m
2/ g.
7. a kind of cornstalk Mechanical Method according to claim 1 is divided the papermaking process of silk fiberization, it is characterized in that, may further comprise the steps:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 28mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 2% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 155 ℃, and penetration period is 2.5 hours;
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 17.5 ° of SR, input concentration mass ratio during the defibrator corase grind is 27.5%, the defibrination temperature is 120 ℃, defibrator corase grind power is 475Kw, and the corase grind time is: from being fed to discharging 1.5 minutes;
In the 4th step, thin up slurry concentration mass ratio to 2%, and the screen cloth press filtration of process 0.275mm divide and sift out thick slurry and screened stock;
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 23%, the defibrination temperature is 110 ℃, the beating degree of mill disposed slurry is 27.5 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 36.5 ° of SR;
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up is 1.75% to the concentration mass ratio, and be the screen centrifuge screening the pulp of 0.18mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 3.5% o'clock standby paper of copying of mass ratio;
In addition, the adding mass ratio is 35% secondary stock in this step, and waste paper material concentration mass ratio is 3.5%, and the cornstalk slurry becomes the mixing pulping with secondary stock and prepares to copy paper;
The 7th step, to copy paper in the online of 1575mm twin cylinder machine and produce boxboard or high-strength corrugated base paper, the quantitative of its paper is 250g/m
2, vertical fracture length 〉=4.0km, tightness 〉=0.53g/m
3, horizontal ring crush index 〉=8.5N.m/g, burst index 〉=2.5kPa.m
2/ g.
8. a kind of cornstalk Mechanical Method according to claim 1 is divided the papermaking process of silk fiberization, it is characterized in that, may further comprise the steps:
The first step is pulverized the cornstalk raw material and is prescinded, and length is 30mm, then raw material is washed to remove the grains of sand and the dust in the raw material;
Second step, behind the cornstalk raw material filtering means dehydration in the first step, in the cornstalk raw material, add mass ratio and be 3% bleeding agent and soak into processing in advance, bleeding agent is that mass ratio is the compound that 20% fatty alcohol and 80% polyoxyethylene ether are formed, temperature is increased to 160 ℃, and penetration period is 3 hours;
The 3rd step, to send into the defibrator corase grind through the cornstalk raw material after the saturation process, make stalk be separated into the slurry that beating degree is 20 ° of SR, input concentration mass ratio during the defibrator corase grind is 30%, the defibrination temperature is 130 ℃, defibrator corase grind power is 1000Kw, and the corase grind time is: from being fed to discharging 2 minutes;
In the 4th step, thin up slurry concentration mass ratio to 2.5%, and the screen cloth press filtration of process 0.30mm divide and sift out thick slurry and screened stock;
The 5th step, divide the crude fibre that sifts out to enter the second road defibrator and continue defibrator process, the refining concentration mass ratio is 25%, the defibrination temperature is 110 ℃, the beating degree of mill disposed slurry is 30 ° of SR, and the screened stock that comes with the first road fiberizer through the slurry after the two road defibrator defibrator process enters the correct grinding pulp grinder and finish grindes that to form beating degree be 38 ° of SR;
The 6th step, fibre stuff behind the correct grinding is carried out screening and separating by pulp screen, thin up concentration mass ratio to 2.0%, and be the screen centrifuge screening the pulp of 0.20mm through the seam that sieves, thick slurry is sent back to second road fiberizer defibrination again, and screened stock passes through press filtration and is concentrated to the 4.0% o'clock standby paper of copying of mass ratio;
In addition, the adding mass ratio is 40% secondary stock in this step, and waste paper material concentration mass ratio is 4%, and the cornstalk slurry becomes the mixing pulping with secondary stock and prepares to copy paper;
The 7th step, on the 2400mm fourdrinier machine, copy high-strength corrugated base paper, that copy paper quantitatively is 110g/m
2, vertical fracture length 〉=4.0km, tightness 〉=0.53g/m
3, horizontal ring crush index 〉=8.5N.m/g, burst index 〉=2.5kPa.m
2/ g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102365442A CN101440586B (en) | 2008-12-31 | 2008-12-31 | Paper-making method by mechanical fibration of maize straw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102365442A CN101440586B (en) | 2008-12-31 | 2008-12-31 | Paper-making method by mechanical fibration of maize straw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101440586A CN101440586A (en) | 2009-05-27 |
| CN101440586B true CN101440586B (en) | 2011-06-08 |
Family
ID=40725172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102365442A Expired - Fee Related CN101440586B (en) | 2008-12-31 | 2008-12-31 | Paper-making method by mechanical fibration of maize straw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101440586B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694078B (en) * | 2009-10-16 | 2011-04-20 | 东北农业大学 | Plant fiber mulching film raw material and pollution-free manufacture method thereof |
| CN103669058B (en) * | 2013-11-13 | 2016-05-04 | 华南理工大学 | A kind of Chinese medicine slag resource utilization method |
| CN105274891B (en) * | 2015-10-22 | 2017-04-12 | 岳阳市天成植物制浆技术研发有限公司 | Traditional Chinese medicine (TCM) biological agent cold pulping method |
| CN106239671B (en) * | 2016-08-19 | 2018-01-19 | 中国水稻研究所 | A kind of step fiberization process of agricultural crop straw two and its application |
| CN109176822B (en) * | 2018-09-30 | 2021-06-22 | 中科国兴（绵阳）科技有限公司 | Method for preparing carton by using straw fiber filaments |
| CN111535064B (en) * | 2020-04-17 | 2022-03-22 | 华夏瑞天(北京)生物科技有限公司 | Method for preparing ecological fiber by using industrial wastewater containing water-soluble silicon element and application |
| CN113005800A (en) * | 2020-12-16 | 2021-06-22 | 江西中竹生物质科技有限公司 | Process for refining paper pulp by using corn straw crude fiber pulp |
| CN113771173B (en) * | 2021-09-15 | 2023-09-08 | 内蒙古工业大学 | Preparation method of completely degradable coating fiberboard based on soybean straw |
| CN114263062A (en) * | 2021-12-31 | 2022-04-01 | 王锡鹏 | Method for preparing straw pulp by continuous hot grinding machine |
-
2008
- 2008-12-31 CN CN2008102365442A patent/CN101440586B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101440586A (en) | 2009-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101440586B (en) | Paper-making method by mechanical fibration of maize straw | |
| CN101498112A (en) | Method for producing packaging paper by all cotton stalk mechanical pulping | |
| CA2414522C (en) | Method for preparing pulp from cornstalk | |
| CN101694075B (en) | Low energy consumption clean paper pulp extracting method and papermaking process thereof | |
| CN106223094A (en) | Mixed pulp paper technology | |
| CN105780568A (en) | Pulp making technology through performing biological enzyme softening lignin removal twice combined with mechanical method | |
| EP3126567B1 (en) | A continuous process for production of cellulose pulp from grass-like plant feedstock | |
| EP1604060A1 (en) | Method for producing corn stalk pulp and paper products from corn stalk pulp | |
| Cappelletto et al. | Papermaking pulps from the fibrous fraction of Miscanthus x Giganteus | |
| CN101492891B (en) | Method for producing and bleaching slasher sizing with oil windmill palm empty fruit fibre | |
| CN101503867B (en) | Method for producing wrapping paper by oil palm empty fruit bunches mechanical pulping | |
| JP2001519486A (en) | Method for processing straw into pulp and paper product obtained therefrom | |
| Fang et al. | Wheat straw pulping for paper and paperboard production | |
| CN110904709A (en) | Production method of high-whiteness waste paper deinking and bleaching paper pulp | |
| CN100424260C (en) | Mechanical cold method for making paper pulp | |
| CN112176750A (en) | P-RC APMP pulping method for hardwood mixed wood | |
| CN106192515A (en) | A kind of strong pulp and preparation technology thereof | |
| CN104611983A (en) | Production method of myopia-preventing paper | |
| CN102561094B (en) | Method for making pulp and paper by using cornstalk xylose residue | |
| CN103255664B (en) | A kind of technique of extracting high-quality fiber from reclaimed waste paper | |
| CN112878096A (en) | Production process of high-yield poplar chemi-mechanical pulp | |
| KR20210081553A (en) | Manufacturing method of non-wood environment-friendly pulp and dried pulp using coffee ground and waste papers and paper manufactured by the pulp | |
| US1716006A (en) | Method of producing cellulose and paper from straw, esparto, reed, and similar raw materials | |
| CN111945473A (en) | Production method and production system of high-strength corrugated base paper | |
| CN105696394A (en) | Environment-friendly pulping method for producing kraft cardboard paper for fine dried noodles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20141231 |
|
| EXPY | Termination of patent right or utility model |