CN110132787A - A kind of detection method of paper grade (stock) agstone - Google Patents
A kind of detection method of paper grade (stock) agstone Download PDFInfo
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- CN110132787A CN110132787A CN201910482171.5A CN201910482171A CN110132787A CN 110132787 A CN110132787 A CN 110132787A CN 201910482171 A CN201910482171 A CN 201910482171A CN 110132787 A CN110132787 A CN 110132787A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N2015/0019—Means for transferring or separating particles prior to analysis, e.g. hoppers or particle conveyors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N2015/0288—Sorting the particles
Abstract
Inventor provide a kind of detection method of paper grade (stock) agstone, comprising the following steps: cross 100um sieve, cross 50um sieve and cross 10um sieve.Technical solution is respectively adopted tri- kinds of different pore size sieves of 100um, 50um, 10um and successively carries out water sieve to raw material limestone powder, the detection method is used to ensure raw material limestone powder lime mountain flour for different fineness mixing, substitute in paper technology as OCC raw material can reach preferable reservation and printing effect.
Description
Technical field
The present invention relates to field of papermaking, in particular to a kind of detection method of paper grade (stock) agstone.
Background technique
It to the detection of lime stone fineness is carried out with reference to " measurement of fineness of pulverized coal " (DL/T567.5-1995) method at present,
Due to big (most of at 50 μm or less), the intergranular mutual attraction of agstone grain diameter little particle agglomerate trend greater than
Grain own wt is unfavorable for the measurement operation that vibrating screen is directly sieved, and the result relative standard deviation referring to the standard detection is big,
It is not able to satisfy the requirement of Instructing manufacture.
Summary of the invention
For this reason, it may be necessary to provide a kind of quick, simple, accurate paper grade (stock) agstone detection method, to agstone into
Row ingredient inspection.To achieve the above object, a kind of detection method of paper grade (stock) agstone, including following step are inventor provided
It is rapid:
It crosses 100um sieve: weighing the agstone of 20.00g, pour into the standard screen that aperture is 100um, rinsed with tap water
The agstone being placed on stainless steel standard sieve is as clear as crystal to sieving water；The water and agstone for collecting 100um sieve, will stay
Have the stainless steel standard sieve of agstone after 100-105 DEG C of drying, separation stays in agstone on standard screen, and to its into
Row screen over-size weighs；It calculates 100um and tails over percentage；
It crosses 50um sieve: the water and agstone of 100um sieve will be crossed, pour into the standard screen that aperture is 50um, use tap water
It is as clear as crystal to sieving water to rinse the agstone being placed on stainless steel standard sieve；The water and agstone of 50um sieve were collected,
By there are the stainless steel standard of agstone sieves after 100-105 DEG C of drying, separation stays in agstone on standard screen, and right
It carries out screen over-size weighing；It calculates 50um and tails over percentage；
It crosses 10um sieve: the water and agstone of 50um sieve will be crossed, pour into the standard screen that aperture is 10um, rushed with tap water
It is as clear as crystal to sieving water to wash the agstone being placed on stainless steel standard sieve；By there are the stainless steel standard of agstone sieves to exist
After 100-105 DEG C of drying, separation stays in the agstone on standard screen, and carries out screen over-size weighing to it；10um is calculated to tail over
Percentage.
Further, testing result determines are as follows: tails over percentage less than 1%, 50um when 100um tails over percentage as 5%-
15%, 10um tail over percentage be 20-50% when, agstone meets the requirement of paper making raw material.It was discovered by researchers that in papermaking
In the process, the agstone mixed using different fineness can reach preferable reservation and printing effect.
Further, testing result determine are as follows: tail over percentage less than 0.1%, 50um tail over percentage be 9-11%,
10um tail over percentage be 28-32% when, agstone meets the requirement of paper making raw material.
Further, in tap water flushing process, spray cannot be splash.
Further, the calculating formula for tailing over percentage are as follows: tail over percentage=(screen over-size/20.00g) × 100%.
A kind of paper grade (stock) agstone is inventor provided, the paper grade (stock) agstone uses the inspection of any description above
Survey method is detected.
It is different from the prior art, tri- kinds of different pore size sieves of 100um, 50um, 10um are respectively adopted to original in above-mentioned technical proposal
Work stone limestone flour successively carries out water sieve, and deviation ratio is lower than 5%, using this method progress agstone raw material detection, easy to operate,
Quickly, accurately.The agstone for using the detection method to can guarantee that raw material limestone powder mixes for different fineness, in paper technology
The middle substitute as OCC raw material can reach preferable reservation and printing effect.
Specific embodiment
Technology contents, construction feature, the objects and the effects for detailed description technical solution, below in conjunction with specific reality
Example is applied to be explained in detail.
In a recent studies on of this department, discovery using agstone (calcium carbonate) partially replace OCC become slurry at
Point, good printing effect can be obtained.Researcher has found in further research, the quality of the fineness of agstone to paper pulp
It has a certain impact.The fineness of agstone is small, is conducive to paper-making fibre absorption, but agstone retention rate in the process of making
It can reduce, cause the waste of raw material；And agstone fineness is big, then paper roughness becomes larger, and influences the printing functionality of paper.
It was discovered by researchers that in the paper making process, the agstone (100um or less) mixed using different fineness can reach
To preferable reservation and printing effect.
A kind of paper grade (stock) agstone of embodiment 1
Cross 100um sieve: with the raw material limestone powder for weighing 20.00g in batch raw material limestone powder, pouring into aperture is
In the standard screen of 100um, the agstone that (flushing process does not splash spray) is placed on stainless steel standard sieve is rinsed with tap water
It is as clear as crystal to sieving water；The water and agstone for collecting 100um sieve, by there are the stainless steel standard of agstone sieves to exist
After 100-105 DEG C of drying, separation stays in the agstone on standard screen, and carries out screen over-size weighing to it；100um is calculated to tail over
Percentage；
It crosses 50um sieve: the water and agstone of 100um sieve will be crossed, pour into the standard screen that aperture is 50um, use tap water
It is as clear as crystal to sieving water to rinse the agstone that (flushing process does not splash spray) is placed on stainless steel standard sieve；It collected
50um sieve water and agstone, by there are the stainless steel standard of agstone sieve 100-105 DEG C drying after, separation stay in mark
Agstone on quasi- sieve, and screen over-size weighing is carried out to it；It calculates 50um and tails over percentage；
It crosses 10um sieve: the water and agstone of 50um sieve will be crossed, pour into the standard screen that aperture is 10um, rushed with tap water
It is as clear as crystal to sieving water to wash the agstone that (flushing process does not splash spray) is placed on stainless steel standard sieve；It will there are lime
For the stainless steel standard sieve of mountain flour after 100-105 DEG C of drying, separation stays in the agstone on standard screen, and tails over to it
Amount weighs；It calculates 10um and tails over percentage.
Tail over percentage=(screen over-size/20.00g) × 100%.
Testing result are as follows:
100um tails over that percentage is 0.5%, 50um tails over percentage 8%, to tail over percentage be 49% to 10um, the batch
Agstone meets the requirement of paper making raw material.
A kind of paper grade (stock) agstone of embodiment 2
Cross 100um sieve: with the raw material limestone powder for weighing 20.00g in batch raw material limestone powder, pouring into aperture is
In the standard screen of 100um, the agstone that (flushing process does not splash spray) is placed on stainless steel standard sieve is rinsed with tap water
It is as clear as crystal to sieving water；The water and agstone for collecting 100um sieve, by there are the stainless steel standard of agstone sieves to exist
After 100-105 DEG C of drying, separation stays in the agstone on standard screen, and carries out screen over-size weighing to it；100um is calculated to tail over
Percentage；
It crosses 50um sieve: the water and agstone of 100um sieve will be crossed, pour into the standard screen that aperture is 50um, use tap water
It is as clear as crystal to sieving water to rinse the agstone that (flushing process does not splash spray) is placed on stainless steel standard sieve；It collected
50um sieve water and agstone, by there are the stainless steel standard of agstone sieve 100-105 DEG C drying after, separation stay in mark
Agstone on quasi- sieve, and screen over-size weighing is carried out to it；It calculates 50um and tails over percentage；
It crosses 10um sieve: the water and agstone of 50um sieve will be crossed, pour into the standard screen that aperture is 10um, rushed with tap water
It is as clear as crystal to sieving water to wash the agstone that (flushing process does not splash spray) is placed on stainless steel standard sieve；It will there are lime
For the stainless steel standard sieve of mountain flour after 100-105 DEG C of drying, separation stays in the agstone on standard screen, and tails over to it
Amount weighs；It calculates 10um and tails over percentage.
Tail over percentage=(screen over-size/20.00g) × 100%.
Testing result are as follows:
100um tails over that percentage is 0.2%, 50um tails over percentage 13%, to tail over percentage be 43% to 10um, batch stone
Limestone flour meets the requirement of paper making raw material.
A kind of paper grade (stock) agstone of embodiment 3
Cross 100um sieve: with the raw material limestone powder for weighing 20.00g in batch raw material limestone powder, pouring into aperture is
In the standard screen of 100um, the agstone that (flushing process does not splash spray) is placed on stainless steel standard sieve is rinsed with tap water
It is as clear as crystal to sieving water；The water and agstone for collecting 100um sieve, by there are the stainless steel standard of agstone sieves to exist
After 100-105 DEG C of drying, separation stays in the agstone on standard screen, and carries out screen over-size weighing to it；100um is calculated to tail over
Percentage；
It crosses 50um sieve: the water and agstone of 100um sieve will be crossed, pour into the standard screen that aperture is 50um, use tap water
It is as clear as crystal to sieving water to rinse the agstone that (flushing process does not splash spray) is placed on stainless steel standard sieve；It collected
50um sieve water and agstone, by there are the stainless steel standard of agstone sieve 100-105 DEG C drying after, separation stay in mark
Agstone on quasi- sieve, and screen over-size weighing is carried out to it；It calculates 50um and tails over percentage；
It crosses 10um sieve: the water and agstone of 50um sieve will be crossed, pour into the standard screen that aperture is 10um, rushed with tap water
It is as clear as crystal to sieving water to wash the agstone that (flushing process does not splash spray) is placed on stainless steel standard sieve；It will there are lime
For the stainless steel standard sieve of mountain flour after 100-105 DEG C of drying, separation stays in the agstone on standard screen, and tails over to it
Amount weighs；It calculates 10um and tails over percentage.
Tail over percentage=(screen over-size/20.00g) × 100%.
Testing result are as follows:
100um tails over that percentage is 0.08%, 50um tails over percentage 10%, to tail over percentage be 30% to 10um, batch
Agstone meets the requirement of paper making raw material.
Embodiment 4-6,160g/m2Kraft paperboard prepares that (agstone is respectively adopted to be made by what embodiment 1-3 was detected
Paper agstone)
The standby slurry of OCC:
Using waste and old boxboard be raw material, including pulping, be screened and purified, heat partition, mill technical process be made OCC slurry
Material；
Wherein, in the mill step, defibrination is first carried out using high concentration disc mill, is ground through excessive concentrations disc mill
After slurry, the beating degree of slurry is 19-20SR.Defibrination is carried out with low concentration disc mill again；The grinding of the low dense disc mill is broom
Change type.Low concentration disc mill is changed to brooming type by the cutting type of script, guarantees fibre length to greatest extent as far as possible, guarantees paper
Intensity.
Slurry into starching under pressure, is introduced into rotary grinding disk in the tooth socket of circular portion again from disc mill center, at reflection shape
It moves in a circle, after encountering the blocking of sealing ring or dam, a part of slurry amount of being forced through abrasive disk space, the shape on the flank of tooth
At serous coat, while the abrasive action by land shear action and the flank of tooth, also rubs mutually between fiber.Most of slurry is rotated
Moving plate drive, stream is turned in turbulence type in the tooth socket to enter price fixing at a high speed, and flow outward along tooth socket, then by each
The effect (distortion power, shearing force, frictional force, kneading force, hydraulic blow power) of kind power, cuts off fiber by tearing, is crushed, and turns round
Song, wire-dividing broom purification are finally discharged from disc mill grout outlet to complete mashing effect.
It is with slurry: surface layer, sandwich layer and base pastes are made in OCC slurry；
The surface layer of kraft paperboard is starched, and the useless OCC slurry of U.S. accounts for 80%, wood pulp and accounts for 5%, agstone 15%；
The sandwich layer of kraft paperboard is starched, and the useless OCC slurry of state accounts for 80%, and wood pulp accounts for 10%, and the useless OCC slurry of U.S. accounts for 10%；
The bottom of kraft paperboard is starched, and the useless OCC slurry of U.S. accounts for 80%, wood pulp and accounts for 5%, agstone 15%；
It manufactures paper with pulp:
By above-mentioned slurry through wet end drainage and formation, press section press, preceding drying section be dry, sizing applicator sizing, after drying section
It dries, calender press polish, batch, rewinding, packaging and warehousing manufacture paper with pulp into paper.
Process of Applying Glue in the step of manufacturing paper with pulp, sizing applicator upper roller gelatin concentration are 10-12%, and lower roll glue solubility is
15%.
160g/m prepared by embodiment 4-62Kraft paperboard improves ink trap at paper surface, smoothness
It also improves, therefore also improves the surface layer printing performance of kraft paperboard.Wherein, the ink trap of embodiment 6 and smooth
Degree further improves compared with embodiment 4,5.
Inventor detects raw material limestone powder with the detection method by a large amount of experiment, research, this method letter
Single, quick, the agstone by detection method institute is that different fineness mixes, and OCC raw material can be used as in paper technology
Substitute, can reach preferable and retain and printing effect.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or the terminal device that include a series of elements not only include those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or end
The intrinsic element of end equipment.In the absence of more restrictions, being limited by sentence " including ... " or " including ... "
Element, it is not excluded that there is also other elements in process, method, article or the terminal device for including the element.This
Outside, herein, " being greater than ", " being less than ", " being more than " etc. are interpreted as not including this number；" more than ", " following ", " within " etc. understand
Being includes this number.
It should be noted that being not intended to limit although the various embodiments described above have been described herein
Scope of patent protection of the invention.Therefore, it based on innovative idea of the invention, change that embodiment described herein is carried out and is repaired
Change or the equivalent structure or equivalent process transformation made by using the contents of the present specification, directly or indirectly by the above technology
Scheme is used in other related technical areas, is included within scope of patent protection of the invention.
Claims (6)
1. a kind of detection method of paper grade (stock) agstone, which comprises the following steps:
It crosses 100um sieve: weighing the agstone of 20.00g, pour into the standard screen that aperture is 100um, be placed in tap water flushing
Agstone on stainless steel standard sieve is as clear as crystal to sieving water；The water and agstone for collecting 100um sieve, will there are stones
For the stainless steel standard sieve of limestone flour after 100-105 DEG C of drying, separation stays in the agstone on standard screen, and sieves to it
Surplus weighs；It calculates 100um and tails over percentage；
It crosses 50um sieve: the water and agstone of 100um sieve will be crossed, pour into the standard screen that aperture is 50um, rinsed with tap water
The agstone being placed on stainless steel standard sieve is as clear as crystal to sieving water；The water and agstone for collecting 50um sieve, will stay
Have the stainless steel standard sieve of agstone after 100-105 DEG C of drying, separation stays in agstone on standard screen, and to its into
Row screen over-size weighs；It calculates 50um and tails over percentage；
It crosses 10um sieve: the water and agstone of 50um sieve will be crossed, pour into the standard screen that aperture is 10um, set with tap water flushing
It is as clear as crystal to sieving water in the agstone on stainless steel standard sieve；By there are the stainless steel standard of agstone sieves in 100-
After 105 DEG C of drying, separation stays in the agstone on standard screen, and carries out screen over-size weighing to it；It calculates 10um and tails over percentage
Than.
2. detection method according to claim 1, which is characterized in that testing result determines are as follows: when 100um tails over percentage
Less than 1%, 50um tail over percentage be 5%-15%, 10um to tail over percentage be 20-50% when, agstone meets papermaking original
The requirement of material.
3. detection method according to claim 2, which is characterized in that testing result determines are as follows: when 100um tails over percentage
Less than 0.1%, 50um tail over percentage be 9-11%, 10um to tail over percentage be 28-32% when, agstone meets papermaking original
The requirement of material.
4. detection method according to claim 1, which is characterized in that in tap water flushing process, spray cannot be splash.
5. detection method according to claim 1, which is characterized in that the calculating formula for tailing over percentage are as follows: tail over hundred
Divide ratio=(screen over-size/20.00g) × 100%.
6. a kind of paper grade (stock) agstone, which is characterized in that the paper grade (stock) agstone is any described using claim 1-5
Detection method detected.
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