CN1227413C - Non-ionic type particle retention aid and filter aid system and its use in paper making process - Google Patents
Non-ionic type particle retention aid and filter aid system and its use in paper making process Download PDFInfo
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Abstract
The present invention relates to a non-ionic type particle preservation and filtration auxiliary system for paper making, which is composed of two components of polyethylene glycol oxide (PEO) and inorganic mineral substances compounded by weight. When in use, one of the inorganic mineral substances and the PEO is added in paper pulp first, and after sufficient and uniform stirring, the other substance is added. An obtained mixture is stirred uniformly, and after a shearing process, paper is fabricated. The present invention not only can enhance the preservation rate of fine fibers and filling materials, increase the water separation capability of a net part of a paper making machine and improve the evenness of paper pages, but also has stronger capability for resisting the interference of anion impurities in the process of paper making and still has better preservation and filtration effects in a wet end chemistry system with more anion substances. The present invention overcomes the interference of the anion impurities, and enables paper-making industry to easily realize the full hermitic circulation of white water and the 'zero release' of paper making waste water. In addition, the non-ionic type particle preservation and filtration auxiliary system enables non traditional water resources, such as sea water, brackish water, etc., to become the water resources for the paper-making industry.
Description
One, technical field
The present invention relates to the retention aid and filtering aid system that a kind of paper industry is used, specifically relate to a kind of nonionic microparticle retention and drainage system of paper grade (stock) and the using method in paper-making process thereof.
Two, background technology
In paper industry, because global forest resource decrease, shortage appears in timber long fiber quantity; Along with people pay much attention to the benefit of ecological environment, with serious pollution paper industry also changes to " green technology for making paper " direction, and the loss of a large amount of sewage discharges and fiber fines proposes bigger challenge to " green technology for making paper " again.And in paper manufacturing systems, compare with press section, drying section and curled portion etc., it is even more important that wet end seems, especially wet end chemistry.Effective use of the shaping of page and the quality of water filtering performance, other chemical assistants, good fiber fines retention and the zero-emission of paper waste etc. all need one efficiently retention aid and filtering aid system realize.In the present existing retention aid and filtering aid system many kinds are arranged, comprise single composition, two composition and Microparticle Retention System.
Microparticle Retention System is the new retention system that occurs in recent years.This system is cationic polyacrylamide or the cationic starch that adds high molecular in copying the paper system before the high shear force, behind high shear point, and adding anionic microparticles (cataloid, bentonite).Particulate retention system not only can improve retention, reduce production costs, significantly improve the drainability of web part of paper machine, improve the speed of a motor vehicle, quality, and can improve the press section dewatering speed, improve the evenness of page, paper strength can obviously not descend with the raising of filler retention, plays a positive role at aspects such as treatment paper machine white water recovery in addition yet.Main microparticulate systems is the Hydrocol system of being made up of polyacrylamide and modified alta-mud, the Composzil system of forming by cationic starch and anionic colloid silicon, and the Hydrozil system of forming by cationic starch and aluminum sulfate, wherein the Hydrozil system only can be used under alkali condition.
Above-mentioned various system plays a role in the time of all can not existing at the electric charge interfering material of woody batching and high concentration well.In recent years, because a large amount of uses of mechanical pulp, celluloid ink slurry and secondary stock make paper making wet part contain more anionic impurity.Microparticle Retention System adopts the principle of charge neutrality more, anionic impurity more for a long time in system, just be difficult to bring into play its usefulness, though can eliminate the interference of anionic impurity by adding anion catching agent, but add anion catching agent and can increase production cost on the one hand, can make that on the other hand the control of wet end chemistry is complicated.And in the wet end chemistry of papermaking, the source of anionic impurity is very extensive, and its fluctuation is very big, and also the charge balance to wet end chemistry brings very burden.
PEO/ phenolic resins retention system is a kind of new retention system, produces hydrogen bond association by phenolic hydroxyl group in the phenolic resins (PFR) of the oxygen atom of ehter bond in polyethylene glycol oxide (PEO) molecule, forms network structure, plays the poly-effect of wadding.Just because of the PEO system has this special cohesion mechanism, it is compared with single high molecular polymer retention agent, following characteristics are arranged: 1. can in the pH value scope of broad, use; 2. easily recently adjust retentions such as paper formation or raising filler by two set of dispense in the change system; 3. for containing the more paper stock of anionic property material, can utilize the effect of its lignifying compound instead of part PFR that contains, thereby can give full play to the retention aid and filtering aid function producing newsprint and containing in the paper of more groundwood pulp, this is the maximum feature of this system.Just because of the PEO system has These characteristics, make it in newsprint production, obtain certain application.But PEO/ phenolic aldehyde retention system also exists fatal weakness, because the ability of the anti-shearing force of PEO/ phenolic aldehyde retention system is relatively poor, therefore applying on high-speed paper machine has been subjected to certain restriction.Itself does not possess a series of advantage of Microparticle Retention System the retention system of polyethylene glycol oxide/phenolic resins yet.
The totally-enclosed circulation of plain boiled water is that paper industry realizes one of most important sign of cleaner production, it is under the condition of the totally-enclosed circulation of plain boiled water that present paper industry whitewater closure circulating system faces a maximum difficult problem, the run-up of mixing of the anion of system inside, cationic demand is more and more higher, high molecular polymer can not be stretched out in water, influenced bridging action.Cause some cationic retention system (as CPAM), even the retention effect of the Microparticle Retention System (as CPAM+ bentonite, cationic starch+Ludox, cationic starch+aluminium polychloride) that just occurs in the eighties of last century the nineties sharply descends, thereby further has influence on into the performance of paper.
China is a very inhomogenous country of distribution of water resources, the critical shortage of water resource, some areas in China have become a bottleneck that restricts local paper industry economic development as Shandong, and the water resource of certain areas has changed the resource of strategic type into from general resource.
Three, summary of the invention
1, Fa Ming purpose
Retention aid and filtering aid system provided by the invention can overcome existing variety of problems of above-mentioned system and obstacle, form a kind of microparticle retention and drainage system of resisting the nonionic of the interference of anionic impurity in the paper-making process, not only can improve the retention of fiber fines and filler, and can increase the water separation capability of web part of paper machine, improve the evenness of page; Also can increase whitewater closure circulation degree simultaneously, reduce the water consumption of papermaking.
In addition, the present invention has enlarged the scope of paper industry water, makes the water resource of non-traditional types such as some seawater, brackish water become the resource of paper industry water.
2, technical scheme
A kind of microparticle retention and drainage of nonionic efficiently system of paper grade (stock) is characterized in that this system is made up of following two kinds of components and consumption, and its consumption is a percetage by weight:
A kind of component is a non-ionic polymer, and the addition of this polymer in paper pulp is the 0.0025-0.08% of over dry slurry weight;
Another kind of component is the zeopan inorganic mineral that has layer structure, and the addition of this inorganic mineral in paper pulp is the 0.1-10% of over dry slurry weight.
Above-mentioned said high molecular polymer is polyethylene glycol oxide (PEO), and its mean molecule quantity is 100-1300 ten thousand; The zeopan inorganic mineral that has layer structure is bentonite, imvite, attapulgite clay, sepiolite, zeolite.
The application process of a kind of microparticle retention and drainage of nonionic efficiently system in paper-making process, its step is as follows:
1. paper pulp is discongested the form slurry aaerosol solution;
2. in pulp suspension, add the zeopan inorganic mineral of layer structure earlier, fully stir;
3. add the high molecular polymer of nonionic again, stir, produce flocculation;
4. after shearing, manufacture paper with pulp into paper.
Perhaps 2. in pulp suspension, add the high molecular polymer of nonionic earlier, fully stir in above-mentioned steps
Evenly, 3. add the zeopan inorganic mineral of layer structure then again in step, stir, produce flocculation.
The above-mentioned steps 2. zeopan inorganic mineral of the middle layer structure that adds is bentonite, imvite, attapulgite clay, sepiolite, zeolite, and the addition in pulp suspension is the 0.1-10% of over dry slurry weight.The 3. middle high molecular polymer that adds of above-mentioned steps is a polyethylene glycol oxide, and addition is the 0.0025-0.08% of over dry slurry weight in pulp suspension.
Interpolation order aspect about polyethylene glycol oxide (PEO) and inorganic mineral adopts to add inorganic mineral earlier in slurry, after add the method for PEO, the retention and drainage effect of this method is better.PEO and inorganic mineral mass-energy make paper pulp fiber and filler produce flocculation reaction, form the poly-group of big wadding, after shear action, form the poly-group of little wadding, meanwhile, existing inorganic mineral mass-energy and PEO wad a quilt with cotton poly-ly again in the slurry, form particulate wadding poly structure, the floc sedimentation of this particulate wadding poly structure, can be at the fiber fines that improves paper pulp and the retention of filler, when increasing the water separation capability of web part of paper machine, improve the evenness of page, thereby form a kind of microparticle retention and drainage system of nonionic.The microparticle retention and drainage system of this nonionic has the interference performance of anionic impurity in the stronger opposing paper-making process, still has retention and drainage effect preferably in the more wet end chemistry system of anionic species.
Polyethylene glycol oxide is the heavy polymer that the ring-opening polymerization of oxirane heterogeneous catalysis forms.Its molecular formula is
Polymer properties depends primarily on the size of mean molecule quantity.Because there is C-O-C ether in polyethylene glycol oxide, therefore have the compliance that the polyethers resin has usually, and because of a large amount of oxygen atoms on major key, so can with electron acceptor or some inorganic electrolyte formation association complex.
A kind of new Microparticle Retention System that the present invention utilizes polyethylene glycol oxide and inorganic filler to form, on the one hand utilize the retention agent of this nonionic of polyethylene glycol oxide can resist the anionic impurity characteristics of interference, the evenness that has kept original Microparticle Retention System on the other hand fully is good, retention, help filter can adapt to the advantage of various different operating environment.
The present invention also has breakthrough on the generation type of Microparticle Retention System, and general microparticle system all is to add cationic polymer earlier to form the poly-group of big wadding, and then after shearing, adds the inorganic filler of reinforcing yin essence ion-type, and it is poly-to form the particulate wadding.And the formation of the particulate of this research is to utilize polyethylene glycol oxide and inorganic mineral qualitative response, form the poly-group of big wadding, inorganic mineral mass-energy and PEO wad a quilt with cotton poly-again after shearing, form particulate wadding poly structure, inorganic mineral is the assistant of double base flco system, is again to form wad a quilt with cotton the again major impetus source of poly structure of particulate.Therefore application aborning will be more simple.
3, beneficial effect
The present invention compares with existing retention aid and filtering aid system, has following obvious advantage:
1. the present invention is a kind of microparticle retention and drainage system of the nonionic of forming with polyethylene glycol oxide (PEO) and inorganic mineral.This retention filter system is a kind of Microparticle Retention System of nonionic, and it not only can improve the retention of fiber fines and filler, increases the water separation capability of web part of paper machine, improves the evenness of page, thereby reduces production costs, and improves product quality and yield; And it has the interference capability of anionic impurity in the stronger opposing paper-making process, still has retention and drainage effect preferably in the more wet end chemistry system of anionic species.
2. the particulate generation type of this invention and original cationic Microparticle Retention System are different.It is to utilize polyethylene glycol oxide and inorganic filler to form flocculation system, inorganic filler can produce to wad a quilt with cotton again and gather with polyethylene glycol oxide after shearing, form particulate wadding poly structure, inorganic filler is the assistant of double base wadding aggressiveness system, is again to form wad a quilt with cotton the again major impetus source of poly structure of particulate.Therefore application aborning will be more simple.
3. this invention has overcome the interference of anionic impurity, makes paper industry realize the totally-enclosed circulation of plain boiled water easily, realizes " zero-emission " of paper waste.For reducing the paper industry water consumption, preserve the ecological environment, realize that positive contribution is made in the cleaner production of paper industry.
4. this invention enlarges the scope of the water of paper industry, make the water resource of non-traditional types such as some seawater, brackish water become the resource of paper industry water, fundamentally solve the puzzlement of paper industry water, make some water-deficient area, edge development paper industries that new selection arranged.
Four, the specific embodiment
Retention aid and filtering aid system among the present invention, be at ambient temperature with the polyethylene glycol oxide (PEO) of nonionic and inorganic mineral, detect (or loss) situation of keeping of the drainability and the fiber fines of paper pulp with dynamic drainage instrument (DDJ) simulation wet end of machine system, and change electrochemical conditions, add the influence of different chemical assistants and inorganic, organic interfering material body series.The concrete implementation method of the present invention is as follows:
The mensuration of tiny constituent content in the paper pulp:
Adopt with dynamic drainage experiment similar methods paper pulp is carried out screen experiments, the used pulp density of screen experiments is 0.5%, speed of agitator is decided to be 1500rpm, to avoid the producing wadding polymers between the fiber, and water washes sample under high-speed stirred, calculates tiny components contents in the paper pulp according to the amount of contained tiny component in the filtrate again.Tiny component computing formula is as follows:
This tiny component average content of testing used secondary stock is about 23%.
Tiny component retention:
A certain amount of slurry and filler and inorganic mineral are added in the dynamic drainage instrument, rotating speed with 1500rpm mixes it earlier, under the speed of 750rmp, add PEO again, begin to access filtrate (before accessing, emitting 10ml earlier) after stirring about 10s, 30s stops to access, weigh, filter, dry, survey ash content (calcination 3h in 800 ℃ Muffle furnace) subsequently, calculate the retention of fines according to the TAPPI standard method.The TAPPI standard method is:
Tiny component retention %=[1-(500 * W
2)/(W * W
1)] * 100
Wherein: the filtrate that W-30 collected in second is heavy, g
W
1The amount of whole tiny components in the-500ml slurry, g
W
2The amount of tiny component in the filtrate of collecting in-30 seconds, g
Drainability:
A certain amount of slurry and inorganic substances are added in the dynamic drainage instrument, and the mixing power with 1500rpm mixes it earlier, adds PEO again under the speed of 750rpm, transfers to behind the stirring 30s and surveys beating degree in the Schopper-Riegler beating degree tester.
The preparation of artificial seawater:
Adopt the prescription (1940) of Lyma and Fleing, inorganic salt content 3.448%
| Salt | The gram number | The salt number | The gram number |
| NaCl | 23.476 | NaHCO 3 | 0.192 |
| MgCl 2 | 4.981 | KBr | 0.096 |
| Na 2SO 4 | 3.917 | H 3BO 3 | 0.026 |
| CaCl 2 | 1.102 | SrCl 2 | 0.024 |
The preparation of anionic impurity in the simulation plain boiled water:
Adding lignosulfonates or lignosulfonates separately mixes as the anionic interfering material in the plain boiled water by a certain percentage with wood sugar.
Embodiment 1 PEO/ bentonite system is to slurry water filtering performance and retention influence
Here, the interpolation of PEO and inorganic mineral is adopted in proper order and add inorganic mineral earlier in slurry, adds the method for PEO again.
Earlier be that to discongest into concentration be 0.5% pulp solution for the deinked pulp of 49 ° of SR with beating degree, adding 25% again (weighs bone dry fiber, as follows) talcum powder, measuring 400ml pours in the dynamic drainage instrument, add inorganic mineral again, under 1500 rev/mins rotating speed, stir, rotating speed is turned down 750 rev/mins then, adding polyethylene glycol oxide (PEO) sheared 30 seconds, under 25 ℃ of temperature, the pH value of slurry is controlled at 7.0, measures the total retention of water filtering performance, fines of slurry and the retention of filler.(following examples and example 1 are together)
Inorganic mineral in this example is a sodium bentonite, and addition is 0.06g (is equivalent to over dry slurry heavy 3%); The molecular weight of PEO is 6,000,000, and addition is 0.2mg (is equivalent to bone dry fiber heavy 0.01%), the drainability of slurry than not with the condition improved of retention agent nearly twice, be reduced to 27 ° of SR from 49 ° of SR of magma; The total retention of fines of crossing 120 order nets is 53.8%, and filler retention reaches 57.8%.
The addition of embodiment 2 different PEO is to the drainage of slurry and the influence of retention performance
Other implementation condition is with embodiment 1, just the inorganic mineral in this example is an attapulgite clay, addition is 0.08g (is equivalent to over dry slurry heavy 4%), and the addition of PEO is as shown in table 1, and the result of total retention of the drainability of its slurry and fines and filler retention is as shown in table 1:
The addition of the different PEO of table 1 is to the drainage of slurry and the influence of retention performance
| The addition % of PEO | 0.005 | 0.010 | 0.015 | 0.025 | 0.05 | 0.075 | |
| Beating degree ° SR | Do not shear | 27 | 24 | 23 | 22 | 24 | 25 |
| Shear | 32 | 25 | 25 | 24 | 24 | 24 | |
| Retention % | The total retention of fines | 72.1 | 78.0 | 86.9 | 91.1 | 93.2 | 92.8 |
| Filler retention | 52.2 | 73.3 | 80.2 | 81.3 | 83.2 | 84.3 | |
As can be seen from Table 1, along with the increase of the consumption of PEO, the water filtering performance of slurry, the total retention of fines and filler retention all have raising in various degree, illustrate that the consumption of PEO has bigger influence to this Microparticle Retention System.
The consumption of the inorganic mineral that embodiment 3 is different is to the influence of slurry drainage and retention performance
Other implementation condition is with embodiment 1, just the inorganic mineral in this example is an attapulgite clay, addition is as shown in table 2, and the addition of PEO is 0.01% (to the over dry slurry), and the result of total retention of the drainability of its slurry and fines and filler retention is as shown in table 2:
The consumption of the attapulgite clay that table 2 is different is to the influence of slurry drainage and retention performance
| The addition % of attapulgite clay | 0.3 | 1.0 | 2.0 | 3.0 | 4.0 | 5.0 | 7.0 | |
| Beating degree ° SR | Do not shear | 39 | 35 | 33 | 32 | 29 | 27 | 26 |
| Shear | 42 | 38 | 35 | 34 | 31 | 27 | 26 | |
| Retention % | The total retention of fines | 45.7 | 52.6 | 59.6 | 73.1 | 78.0 | 80.4 | 85.2 |
| Filler retention | 37.2 | 44.6 | 57.2 | 68.8 | 73.3 | 75.2 | 82.1 | |
As can be seen from Table 2, under the situation that PEO remains unchanged, along with the increase of the consumption of attapulgite clay, the water filtering performance of slurry, the total retention of fines and filler retention all have raising in various degree, illustrate that the consumption of attapulgite clay has certain influence to this Microparticle Retention System.
Embodiment 4 pH values are to the retention aid and filtering aid Effect on Performance of this system
Other implementation condition is with embodiment 1, just the inorganic mineral in this example is an attapulgite clay, addition is 0.08g (is equivalent to over dry slurry heavy 4%), the addition of PEO is 0.01% (to the over dry slurry), just change the pH value of copying paper, in the scope of pH value from 2 to 12, the result of total retention of the drainability of its slurry and fines and filler retention is as shown in table 3.From the experimental result of table 3 as can be seen, the pH value of this system is little to the influence of drainability and retention, illustrates that this system both can be suitable for acid papermaking, also can be suitable for neutral and alkali papermaking.
The different pH value of table 3 is to the drainage of slurry and the influence of retention performance
| PH value | 2 | 4 | 6 | 7 | 8 | 10 | 12 | |
| Drainability ° SR | Static | 21 | 25 | 25 | 24 | 26 | 27 | 25 |
| Shear | 30 | 36 | 36 | 36 | 36 | 37 | 36 | |
| Retention % | The total retention of fines | 60.2 | 65.0 | 60.4 | 62.1 | 78.0 | 70.0 | 72.6 |
| Filler retention | 41.6 | 72.2 | 63.8 | 68.5 | 73.3 | 57.4 | 63.8 | |
Embodiment 5 inorganic salts are to the retention aid and filtering aid Effect on Performance of this system
Other implementation condition is with embodiment 1, just the inorganic mineral in this example is an attapulgite clay, addition is 0.08g (is equivalent to over dry slurry heavy 4%), the addition of PEO is 0.01% (to the over dry slurry), pH value of slurry remains on 7.0, just in joining the process of slurry, adds artificially made's seawater (inorganic salt concentration 3.448%), seawater shared ratio in paper making water is as shown in the table, and the retention of slurry drainability and fines (with example 3) sees the following form.The result shows that inorganic salts are little to the influence of drainability and retention.
The addition of table 4 seawater is to the drainage of slurry and the influence of retention performance
| Seawater addition % | 0 | 20 | 40 | 60 | 80 | 100 | |
| Drainability ° SR | Static | 24 | 30 | 26 | 25 | 26 | 28 |
| Shear | 25 | 31 | 31 | 28 | 28 | 32 | |
| Retention % | The total retention of fines | 62.1 | 62.5 | 64.9 | 62.9 | 61.8 | 56.6 |
| Filler retention | 68.5 | 59.0 | 57.7 | 55.9 | 54.2 | 51.8 | |
Embodiment 6 anionic impurities are to this system retention aid and filtering aid Effect on Performance
Other enforcement bar is with embodiment 2, just in slurry, add before the inorganic mineral attapulgite clay, add water-soluble anionic type material earlier, lignosulfonates and wood sugar, addition is as shown in the table, and the drainability of slurry and the retention of fines (with example 3) see the following form.The result shows that the anionic material does not almost have influence on water filtering performance and retention, and in the more wet end chemistry system of anionic impurity, this retention aid and filtering aid system still can have been given play to effect preferably like this.
Table 5 anionic impurity is to the drainage of slurry and the influence of retention performance
| Lignosulfonates | Lignosulfonates+wood sugar | ||||||||||||
| Anionic species amount mg/ L | Wood sugar | 120 | 240 | 360 | 480 | 720 | 960 | ||||||
| Lignosulfonates | 12. 5 | 25 | 37. 5 | 50 | 75 | 100 | 12. 5 | 25 | 37. 5 | 50 | 75 | 100 | |
| Drainability ° SR | Static | 36 | 31 | 26 | 27 | 27 | 26 | 32 | 26 | 28 | 28 | 31 | 30 |
| Shear | 38 | 41 | 39 | 39 | 38 | 44 | 41 | 39 | 39 | 40 | 39 | 38 | |
| Retention % | The total retention of fines | 41. 2 | 44. 6 | 55. 1 | 58. 1 | 62. 3 | 55. 7 | 50. 3 | 52. 0 | 56. 7 | 66. 8 | 60. 3 | 58. 0 |
| Filler retention | 48. 5 | 50. 1 | 57. 1 | 70. 6 | 52. 0 | 49. 6 | 56. 9 | 70. 5 | 73. 4 | 79. 1 | 61. 1 | 57. 1 | |
Embodiment 7 these systems are to the influence of the evenness index of handsheet paper
The pulping method of handsheet is in this example: earlier a certain amount of slurry is poured in the dynamic drainage instrument, fully stirred add filler, inorganic mineral under 750rpm after, add PEO again and sheared 30 seconds, then slurry is transferred to ZQJ
1-B pattern is copied and got the shaping of manufacturing paper with pulp in the device, and is dry under the 0.9kgf vacuum, obtains handsheet.
The proportioning of the mixing wood pulp that uses in this example is the bleached sulphate softwood pulp: BRATSK=3: 7, beating degree are respectively 43 ° of SR, 35 ° of SR, and mixing beating degree is 37 ° of SR, and the secondary stock of use is identical with example 1.Inorganic mineral in this example is an attapulgite clay, and its addition is 4%, (to the over dry slurry), Substance 50g/m
2, talcum powder 25% (to bone dry fiber) is the evenness index that the evenness instrument of AMBERTEC-B FORMATION TESTER is measured the handsheet under the different PEO consumptions with model:
| The addition % of PEO | Evenness index g/m 2 | |
| Deinked pulp | Mix wood pulp | |
| 0 | 3.43 | 4.94 |
| 0.005 | 3.39 | 4.89 |
| 0.010 | 3.57 | 5.18 |
| 0.015 | 3.50 | 4.85 |
| 0.020 | 3.44 | 5.15 |
| 0.025 | 3.35 | 5.17 |
| 0.030 | 3.66 | 5.08 |
From top result, along with the increase of the consumption of PEO, no matter be paper of manufacturing paper with pulp with secondary stock or the paper of manufacturing paper with pulp with the mixing wood pulp, the variation of their evenness index is all little, compares maximum deviation with blank sample 0.23 and 0.24g/m
2, illustrate that this retention aid and filtering aid system is little to the evenness influence of paper, be a kind of Microparticle Retention System of nonionic.It can also keep paper that evenness is preferably arranged in the retention while of fiber fines that improves slurry and filler.
Claims (5)
1, a kind of nonionic microparticle retention and drainage system of paper grade (stock) is characterized in that this system is made up of following two kinds of components and consumption, and its consumption is a percetage by weight:
A kind of component is the polyethylene glycol oxide of nonionic, and its mean molecule quantity is 100-1300 ten thousand, and the addition of this polyethylene glycol oxide in paper pulp is the 0.0025-0.08% of over dry slurry weight.
Another kind of component is the zeopan inorganic mineral that has layer structure, and the addition of this inorganic mineral in paper pulp is the 0.1-10% of over dry slurry.
2, the microparticle retention and drainage system of paper grade (stock) according to claim 1 is characterized in that the zeopan inorganic mineral that has layer structure in retention aid and filtering aid system is formed is bentonite, imvite, attapulgite clay, sepiolite, zeolite.
3, the using method of a kind of nonionic microparticle retention and drainage system in paper-making process, its step is as follows:
1. paper pulp is discongested the form slurry aaerosol solution;
2. in pulp suspension, add the zeopan inorganic mineral of layer structure earlier, fully stir;
3. add the polyethylene glycol oxide of nonionic again, stir, produce flocculation;
4. after shearing, manufacture paper with pulp into paper.
Perhaps 2. in pulp suspension, add the polyethylene glycol oxide of nonionic earlier, stir, 3. add the zeopan inorganic mineral of layer structure then in step again, stir, produce flocculation in above-mentioned steps.
4, method according to claim 3, the zeopan inorganic mineral that it is characterized in that the layer structure that adds in 2. in above-mentioned steps is bentonite, imvite, attapulgite clay, sepiolite, zeolite, and the addition in pulp suspension is the 0.1-10% of over dry slurry weight.
5, method according to claim 3 is characterized in that the polyethylene glycol oxide that adds in 3. in above-mentioned steps, and addition is the 0.0025-0.08% of over dry slurry weight in pulp suspension.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102154938A (en) * | 2011-05-04 | 2011-08-17 | 南京林业大学 | Polyethylene oxide-silica sol dual-retention drainage system |
| CN102330385A (en) * | 2011-09-15 | 2012-01-25 | 浙江华邦特种纸业有限公司 | Non-ionic-type particle retention aid and filter aid system in paper making and application method thereof |
| CN102888784B (en) * | 2012-09-20 | 2014-09-03 | 蚌埠凤凰滤清器有限责任公司 | Filter filtering paper and preparation method thereof |
| CN102921387A (en) * | 2012-10-26 | 2013-02-13 | 浙江海亮环境材料有限公司 | Particle retention and filtration aid agent for papermaking |
| CN107254804B (en) * | 2017-06-07 | 2019-08-30 | 天门顺康纸业有限公司 | A kind of preparation method of composite papermaking sticking agent |
| CN114318937A (en) * | 2020-09-27 | 2022-04-12 | 牡丹江市海洋新材料科技有限责任公司 | Novel method for combined use of soluble silicate, polyaluminium chloride and flocculant in multiple fields |
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Assignee: Zhejiang Winbon Special Paper Co., Ltd. Assignor: Zhou Xiaofan Contract fulfillment period: 2009.2.18 to 2014.3.1 contract change Contract record no.: 2009330000445 Denomination of invention: Non-ionic type particle retention aid and filter aid system and its use in paper making process Granted publication date: 20051116 License type: Exclusive license Record date: 2009.3.9 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.2.18 TO 2014.3.1; CHANGE OF CONTRACT Name of requester: ZHEJIANG HUABANG SPECIALITY PAPER CO., LTD. Effective date: 20090309 |
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