CN102517178B - Preparing method of stilbene biphenyl fluorescent brightener - Google Patents

Preparing method of stilbene biphenyl fluorescent brightener Download PDF

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CN102517178B
CN102517178B CN201110378197.9A CN201110378197A CN102517178B CN 102517178 B CN102517178 B CN 102517178B CN 201110378197 A CN201110378197 A CN 201110378197A CN 102517178 B CN102517178 B CN 102517178B
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sodium
biphenyl
filter cake
fluorescent brightener
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CN102517178A (en
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王国森
容建明
诸建鑫
赖瑞全
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ZHEJIANG HONGDA CHEMICALS CO Ltd
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Abstract

A preparing method of a stilbene biphenyl fluorescent brightener comprises performing desalting secondary refining to a filter cake containing the stilbene biphenyl fluorescent brightener; pulping the filter cake; homogenizing serosity through a colloid mill or a high-pressure homogenizer so as to guarantee that fineness of particles in the serosity is 10-100mum; and finally performing spray drying to the serosity to obtain a product. Effective component(s) of the filter cake containing the stilbene biphenyl fluorescent brightener is/are one of or a mixture of a plurality of sulfonyl styryl biphenyl compounds. The preparing method enables the fluorescent brightener having high water solubility at a normal temperature to be obtained, and has the effects of saving energy and reducing production cost.

Description

The preparation method of stilbene biphenyl fluorescent brightener
Technical field
The present invention relates to a kind of preparation method of stilbene biphenyl fluorescent brightener.
Background technology
Along with improving constantly of living standard of urban and rural population level, the demand of liquid washing agent is in continuous lifting.At present, in liquid washing agent, white dyes main component used is 4,4 '-bis--(2-sodium sulfonate styryl) biphenyl, its solubleness (25 ℃) is at 15g/l-25g/l, in liquid washing agent production process, require the strength of solution of preparation greatly between 45-50g/l, because the solubleness of the white dyes of selling is in the market lower, this just requires to need to be warmed up to 60-70 ℃ in the process of its solution of preparation, the heat retaining property that the container of the solution preparing also requires, in order to avoid temperature declines, rear solute is separated out in solution.
Summary of the invention
The object of this invention is to provide a kind of preparation method of stilbene biphenyl fluorescent brightener, it can obtain the white dyes with highly water-soluble under normal temperature, thereby in the process of preparation whitening agent solution just without intensification, store the container of aimed concn whitening agent solution also without taking Insulation, the object that reach energy-conservation, reduces production costs.
For this reason, the invention provides a kind of preparation method of stilbene biphenyl fluorescent brightener, it is characterized in that: described preparation method comprises the following steps:
(1) by the filter cake containing stilbene biphenyl fluorescent brightener, the secondary refining that carries out desalination: first by this filter cake recrystallization in the aqueous solution of pH8-10; Then refining for the first time filter cake is continued to recrystallizing and refining in lower aliphatic alcohols, finally obtain the filter cake of saltiness < 0.5wt%;
(2) by the filter cake making beating stage in upper step: filter cake is water-soluble, make the aqueous solution, first add 1-10wt% dispersion agent to stir, and then add 1-10wt% stopping composition, continue to stir 30 minutes;
(3) again slurries are passed through to colloidal mill or high pressure homogenizer homogenizing, the particle fineness of guaranteeing particle in slurries is 10-100 μ m; In preferred described slurries, the particle fineness of particle is 20-40 μ m.
(4) final slurries are by the dry liquid washing agent white dyes product that obtains highly water-soluble of spraying;
Wherein the effective constituent of the filter cake of stilbene biphenyl fluorescent brightener is one or more mixture of the represented 4,4'-Bis[2-(2-sulfophenyl)ethenyl compound of Formula I:
Figure BDA0000111908570000011
The effective constituent of filter cake is the mixture of 4,4 '-bis--(2-sodium sulfonate styryl) biphenyl and 4,4 '-bis--(4-sodium sulfonate styryl) biphenyl, and both blending ratios are 1/4-4/1.
The effective constituent of filter cake is 4-(2-sodium sulfonate styryl)-4 '-(4-sodium sulfonate styryl)-biphenyl 40-60wt%, 4,4 '-bis--(2-sodium sulfonate styryl) biphenyl 20-30wt%, 4,4 '-bis--(4-sodium sulfonate styryl) biphenyl 20-30wt%.
Preferably the effective constituent of filter cake is 4-(2-sodium sulfonate styryl)-4 '-(4-sodium sulfonate styryl)-biphenyl 45-50wt%, 4,4 '-bis--(2-sodium sulfonate styryl) biphenyl 25-30wt%, 4,4 '-bis--(4-sodium sulfonate styryl) biphenyl 25-30wt%.
Described stopping composition is the mixture of salt, sodium sulfate, sodium carbonate, wilkinite, montmorillonite, zeolite, cyclodextrin or above several stopping composition.
Dispersion agent is negatively charged ion or nonionic type dispersion agent; Anionic dispersing agents is sodium methylene bis-naphthalene sulfonate, Sodium dodecylbenzene sulfonate, hexadecyl benzene sulfonic acid sodium salt, octadecyl benzene sulfonic acid sodium salt, sodium lauryl sulphate, alkyl polyoxyethylene ether sodium sulfate, sodium soap, Alkyl ethoxy carboxylate acid sodium, alkyl sodium sulfonate, oleoyl methyl taurine sodium;
Non-ionic dispersing agent is fatty alcohol and ethylene oxide condensate paregal O 25, high-carbon fatty alcohol (C12-18) polyoxyethylene (n=15-25), lipid acid (C16-18) polyoxyethylene ester, polyoxyethylene amine, sorbitan ester, span 40, sorbester p18 or Polyethylene Glycol-600-2000.
Described dispersion agent and weighting agent adding proportion are 2/3-3/2; Weighting agent is salt, anhydrous sodium sulphate or sodium carbonate; Described dispersion agent is sodium methylene bis-naphthalene sulfonate, paregal O 25 or both mixtures, and wherein sodium methylene bis-naphthalene sulfonate and paregal O 25 blending ratios are 1/4-4/1.
Preferably sodium methylene bis-naphthalene sulfonate and paregal O 25 blending ratios are 2/3-3/2.
The aqueous solution of described alkalescence with alkali be mineral alkali or organic bases; Mineral alkali is potassium hydroxide, sodium hydroxide, sodium carbonate or sodium bicarbonate; Organic bases is Monoethanolamine MEA BASF, diethanolamine or trolamine; Lower aliphatic alcohols is methyl alcohol, ethanol or propyl alcohol.
Should can be commercially available prod or prepare containing the filter cake of stilbene biphenyl fluorescent brightener, the preparation method of this filter cake is: according to needed finished product, in reactor, add ortho-sulfonic acid sodium phenyl aldehyde, the mixture of p-sulfonic acid sodium phenyl aldehyde or ortho-sulfonic acid sodium phenyl aldehyde and p-sulfonic acid sodium phenyl aldehyde, add again 4, 4 '-bis-(diethoxy phosphonium mesitoyl methyl) biphenyl, wherein adjacent (to) sodium sulfonate phenyl aldehyde and 4, 4 '-bis-(diethoxy phosphonium mesitoyl methyl) biphenyl is pressed the mol ratio of 2.3-2.5, add solvent DMF that raw material is fully dissolved, sodium methoxide solution in 40-50 degree dropping 30% fully reacts it, after being added dropwise to complete, continue stirring reaction 8-10 hour, cooling, filtration obtains product.
The method of the present patent application is by repeatedly refining to white dyes filter cake, disperse making beating, high pressure homogenizing, spraying drying and other steps, obtain the white dyes of highly water-soluble, it is at 25 ℃, the water-soluble 50g/l clear that reaches, like this in the process of preparation whitening agent solution just without intensification, the container of storage aimed concn whitening agent solution is also without taking Insulation, the object that reach energy-conservation, reduces production costs.
Embodiment
Embodiment 1
A preparation method for highly water-soluble stilbene biphenyl fluorescent brightener, is characterized in that: described preparation method comprises the following steps:
(1) will be 4 containing effective constituent, 4 '-bis--(2-sodium sulfonate styryl) biphenyl and 4,4 '-bis--secondary refining that 500 kilograms of (4-sodium sulfonate styryl) filter cakes of 1: 1 of biphenyl (wherein solid content 55%) carry out desalination: first this filter cake is placed in to reactor, add 1500 kilograms of distilled water, and add 40 kilograms of Monoethanolamine MEA BASFs, after being heated to dissolve completely, heat filtering, be refrigerated to 5 ℃, crystallization body, press filtration obtains cake filter; Again this cake filter is put into reactor, add 2000 kilograms of ethanol, first reflux 1 hour, then be refrigerated to 5 ℃, and crystallize out, being press-filtered out filter cake is 450 kilograms (solid contents 52%), the saltiness of this filter cake is 0.4%;
(2) by the filter cake making beating stage in upper step: this filter cake is dropped in defibrination still, and add 200 kilograms of distilled water to make solution, then add 25 and 6 kilograms of sodium methylene bis-naphthalene sulfonates of 4 kilograms of paregal Os, grinding made it even after 2 hours, add again 10 kilograms of salt, grind again after 30 minutes, form slurries;
(3) again slurries are passed through to high pressure homogenizer homogenizing, by high pressure homogenizer, the particle fineness that makes particle in described slurries is 30 μ m;
(4) final slurries are dry by spraying in spray tower, obtain the product of 252 kilograms, and the solubleness of this product at 25 ℃ reaches 45g/L after testing, becomes clear liquid.
Embodiment 2
A preparation method for highly water-soluble stilbene biphenyl fluorescent brightener, is characterized in that: described preparation method comprises the following steps:
(1) will be 4-(2-sodium sulfonate styryl)-4 '-(4-sodium sulfonate styryl)-biphenyl 50wt% containing effective constituent, 4, 4 '-bis--(2-sodium sulfonate styryl) biphenyl 25wt%, 4, the secondary refining that the filter cake 500 kilograms (wherein solid content 55%) of 4 '-bis--(4-sodium sulfonate styryl) biphenyl 25wt% carries out desalination: first this filter cake is placed in to reactor, add 1500 kilograms of distilled water, and add 40 kilograms of di-alcohol, after being heated to dissolve completely, heat filtering, be refrigerated to 5 ℃, crystallization body, press filtration obtains cake filter, again this cake filter is put into reactor, add 2000 kilograms of ethanol, first reflux 1 hour, then be refrigerated to 5 ℃, and crystallize out, is press-filtered out 445 kilograms of filter cakes (solid content 53%), and the saltiness of this filter cake is 0.35%,
(2) by the filter cake making beating stage in upper step: this filter cake is dropped in defibrination still, and add 205 kilograms of distilled water to make solution, then add 25 and 4 kilograms of sodium methylene bis-naphthalene sulfonates of 6 kilograms of paregal Os, grinding made it even after 2 hours, add again 10 kilograms of anhydrous sodium sulphate, grind again after 30 minutes, form slurries;
(3) again slurries are passed through to high pressure homogenizer homogenizing, by high pressure homogenizer, the particle fineness that makes particle in described slurries is 30 μ m;
(4) final slurries are dry by spraying in spray tower, obtain the product of 254 kilograms (E=1156), and the solubleness of this product at 25 ℃ reaches 50g/L after testing, becomes clear liquid.
Embodiment 3
A preparation method for highly water-soluble stilbene biphenyl fluorescent brightener, is characterized in that: described preparation method comprises the following steps:
(1) by effective constituent be 4-(2-sodium sulfonate styryl)-4 '-(4-sodium sulfonate styryl)-biphenyl 40wt%, 4, 4 '-bis--(2-sodium sulfonate styryl) biphenyl 30wt%, 4, the secondary refining that the filter cake 500 kilograms (wherein solid content 55%) of 4 '-bis--(4-sodium sulfonate styryl) biphenyl 30wt% carries out desalination: first this filter cake is placed in to reactor, add 1500 kilograms of distilled water, and add 40 kilograms of Monoethanolamine MEA BASFs, after being heated to dissolve completely, heat filtering, be refrigerated to 5 ℃, crystallization body, press filtration obtains cake filter, again this cake filter is put into reactor, add 2000 kilograms of methyl alcohol, first reflux 1 hour, then be refrigerated to 5 ℃, and crystallize out, being press-filtered out filter cake is 450 kilograms (solid contents 52%), the saltiness of this filter cake is 0.4%,
(2) by the filter cake making beating stage in upper step: this filter cake is dropped in defibrination still, and add 200 kilograms of distilled water to make solution, then add 6 kilograms of Polyethylene Glycol-600s and 4 kilograms of sodium methylene bis-naphthalene sulfonates, grinding made it even after 2 hours, add again 10 kilograms of sodium carbonate, grind again after 30 minutes, form slurries;
(3) again slurries are passed through to high pressure homogenizer homogenizing, by high pressure homogenizer, the particle fineness that makes particle in described slurries is 30 μ m;
(4) final slurries are dry by spraying in spray tower, obtain the product of 248 kilograms, and the solubleness of this product at 25 ℃ reaches 52g/L after testing, becomes clear liquid.
Embodiment 4
A preparation method for highly water-soluble stilbene biphenyl fluorescent brightener, is characterized in that: described preparation method comprises the following steps:
(1) will be 4 containing effective constituent, 4 '-bis--(2-sodium sulfonate styryl) biphenyl and 4,4 '-bis--secondary refining that 500 kilograms of (4-sodium sulfonate styryl) filter cakes of 4: 1 of biphenyl (wherein solid content 55%) carry out desalination: first this filter cake is placed in to reactor, add 1500 kilograms of distilled water, and add 38 kilograms of trolamines, after being heated to dissolve completely, heat filtering, be refrigerated to 5 ℃, crystallization body, press filtration obtains cake filter; Again this cake filter is put into reactor, add 2000 kilograms of ethanol, first reflux 1 hour, then be refrigerated to 5 ℃, and crystallize out, being press-filtered out filter cake is 456 kilograms (solid contents 52%), the saltiness of this filter cake is 0.4%;
(2) by the filter cake making beating stage in upper step: this filter cake is dropped in defibrination still, and add 200 kilograms of distilled water to make solution, then add 25 and 7.5 kilograms of sodium methylene bis-naphthalene sulfonates of 2.5 kilograms of paregal Os, grinding made it even after 2 hours, add again 10 kilograms of salt, grind again after 30 minutes, form slurries;
(3) again slurries are passed through to high pressure homogenizer homogenizing, by high pressure homogenizer, the particle fineness that makes particle in described slurries is 30 μ m;
(4) final slurries are dry by spraying in spray tower, obtain the product of 252 kilograms, and this product solubleness at 25 ℃ reaches 50g/L after testing, becomes clear liquid.
Embodiment 5
A preparation method for highly water-soluble stilbene biphenyl fluorescent brightener, is characterized in that: described preparation method comprises the following steps:
(1) will be 4 containing effective constituent, 4 '-bis--(2-sodium sulfonate styryl) biphenyl and 4,4 '-bis--secondary refining that 500 kilograms of (4-sodium sulfonate styryl) filter cakes of 1: 4 of biphenyl (wherein solid content 55%) carry out desalination: first this filter cake is placed in to reactor, add 1500 kilograms of distilled water, and add 38 kilograms of trolamines, after being heated to dissolve completely, heat filtering, be refrigerated to 5 ℃, crystallization body, press filtration obtains cake filter; Again this cake filter is put into reactor, add 2000 kilograms of ethanol, first reflux 1 hour, then be refrigerated to 5 ℃, and crystallize out, being press-filtered out filter cake is 456 kilograms (solid contents 52%), the saltiness of this filter cake is 0.4%;
(2) by the filter cake making beating stage in upper step: this filter cake is dropped in defibrination still, and add 200 kilograms of distilled water to make solution, then add 25 and 7.5 kilograms of sodium methylene bis-naphthalene sulfonates of 2.5 kilograms of paregal Os, grinding made it even after 2 hours, add again 10 kilograms of cyclodextrin, grind again after 30 minutes, form slurries;
(3) again slurries are passed through to high pressure homogenizer homogenizing, by high pressure homogenizer, the particle fineness that makes particle in described slurries is 30 μ m;
(4) final slurries are dry by spraying in spray tower, obtain the product of 249 kilograms, and this product solubleness at 25 ℃ reaches 50g/L after testing, becomes clear liquid.
Embodiment 6
A preparation method for highly water-soluble stilbene biphenyl fluorescent brightener, is characterized in that: described preparation method comprises the following steps:
(1) will be 4-(2-sodium sulfonate styryl)-4 '-(4-sodium sulfonate styryl)-biphenyl 60wt% containing effective constituent, 4, 4 '-bis--(2-sodium sulfonate styryl) biphenyl 20wt%, 4, the secondary refining that the filter cake 500 kilograms (wherein solid content 55%) of 4 '-bis--(4-sodium sulfonate styryl) biphenyl 20wt% carries out desalination: first this filter cake is placed in to reactor, add 1500 kilograms of distilled water, and add 20 kilograms of potassium hydroxide, after being heated to dissolve completely, heat filtering, be refrigerated to 5 ℃, crystallization body, press filtration obtains cake filter, again this cake filter is put into reactor, add 2000 kilograms of ethanol, first reflux 1 hour, then be refrigerated to 5 ℃, and crystallize out, being press-filtered out filter cake is 451 kilograms (solid contents 51%), the saltiness of this filter cake is 0.4%,
(2) by the filter cake making beating stage in upper step: this filter cake is dropped in defibrination still, and add 200 kilograms of distilled water to make solution, then add 10 kilograms of sodium lauryl sulphate, grinding made it even after 2 hours, add again 10 kilograms of cyclodextrin, then grind after 30 minutes, form slurries;
(3) again slurries are passed through to high pressure homogenizer homogenizing, by high pressure homogenizer, the particle fineness that makes particle in described slurries is 30 μ m;
(4) final slurries are dry by spraying in spray tower, obtain the product of 252 kilograms, and this product solubleness at 25 ℃ reaches 48g/L after testing, becomes clear liquid.
Embodiment 7
A preparation method for highly water-soluble stilbene biphenyl fluorescent brightener, is characterized in that: described preparation method comprises the following steps:
(1) will be 4-(2-sodium sulfonate styryl)-4 '-(4-sodium sulfonate styryl)-biphenyl 45wt% containing effective constituent, 4, 4 '-bis--(2-sodium sulfonate styryl) biphenyl 25wt%, 4, the secondary refining that the filter cake 500 kilograms (wherein solid content 55%) of 4 '-bis--(4-sodium sulfonate styryl) biphenyl 30wt% carries out desalination: first this filter cake is placed in to reactor, add 1500 kilograms of distilled water, and add 20 kilograms of sodium hydroxide, after being heated to dissolve completely, heat filtering, be refrigerated to 5 ℃, crystallization body, press filtration obtains cake filter, again this cake filter is put into reactor, add 2000 kilograms of methyl alcohol, first reflux 1 hour, then be refrigerated to 5 ℃, and crystallize out, being press-filtered out filter cake is 450 kilograms (solid contents 51%), the saltiness of this filter cake is 0.4%,
(2) by the filter cake making beating stage in upper step: this filter cake is dropped in defibrination still, and add 200 kilograms of distilled water to make solution, then add 25 and 2 kilograms of sodium methylene bis-naphthalene sulfonates of 8 kilograms of paregal Os, grinding made it even after 2 hours, add again 10 kilograms of cyclodextrin, grind again after 30 minutes, form slurries;
(3) again slurries are passed through to high pressure homogenizer homogenizing, by high pressure homogenizer, the particle fineness that makes particle in described slurries is 30 μ m;
(4) final slurries are dry by spraying in spray tower, obtain the product of 250 kilograms, and this product solubleness at 25 ℃ reaches 48g/L after testing, becomes clear liquid.

Claims (8)

1. a preparation method for highly water-soluble stilbene biphenyl fluorescent brightener, is characterized in that: described preparation method comprises the following steps:
(1) by the secondary refining that carries out desalination containing the filter cake of stilbene biphenyl fluorescent brightener: recrystallization in the aqueous solution that is first 8-10 by this filter cake in pH value; Then refining for the first time filter cake is continued to recrystallizing and refining in lower aliphatic alcohols, finally obtain the filter cake of saltiness < 0.5wt%;
(2) by the filter cake making beating stage in upper step: filter cake is water-soluble, make the aqueous solution, first add 1-10wt% dispersion agent to stir, and then add 1-10wt% stopping composition, continue to stir 30 minutes;
(3) again slurries are passed through to colloidal mill or high pressure homogenizer homogenizing, the particle fineness of guaranteeing particle in slurries is 10-100 μ m;
(4) final slurries are by the dry liquid washing agent white dyes product that obtains highly water-soluble of spraying;
Wherein the effective constituent of the filter cake of stilbene biphenyl fluorescent brightener is one or more mixture of the represented 4,4'-Bis[2-(2-sulfophenyl)ethenyl compound of chemical formula I:
Figure FDA0000464920400000011
Described dispersion agent is negatively charged ion or nonionic type dispersion agent; Anionic dispersing agents is sodium methylene bis-naphthalene sulfonate, Sodium dodecylbenzene sulfonate, hexadecyl benzene sulfonic acid sodium salt, octadecyl benzene sulfonic acid sodium salt, sodium lauryl sulphate, alkyl polyoxyethylene ether sodium sulfate, sodium soap, Alkyl ethoxy carboxylate acid sodium, alkyl sodium sulfonate or oleoyl N-methyltaurine sodium;
Non-ionic dispersing agent is fatty alcohol and ethylene oxide condensate, C16-18 polyoxyethylene carboxylate, polyoxyethylene amine, sorbitan ester, span 40, sorbester p18 or Polyethylene Glycol-600-2000;
Described stopping composition is salt, sodium sulfate, sodium carbonate, wilkinite, montmorillonite, zeolite or cyclodextrin, or the mixture of above several stopping composition.
2. the preparation method of stilbene biphenyl fluorescent brightener according to claim 1, it is characterized in that: the effective constituent of filter cake is 4,4 '-bis--(2-sodium sulfonate styryl) biphenyl and 4, the mixture of 4 '-bis--(4-sodium sulfonate styryl) biphenyl, both weight blending ratios are 1/4-4/1.
3. the preparation method of stilbene biphenyl fluorescent brightener according to claim 1, it is characterized in that: the effective constituent of filter cake is 4-(2-sodium sulfonate styryl)-4 '-(4-sodium sulfonate styryl)-biphenyl 40-60wt%, 4,4 '-bis--(2-sodium sulfonate styryl) biphenyl 20-30wt%, 4,4 '-bis--(4-sodium sulfonate styryl) biphenyl 20-30wt%.
4. the preparation method of stilbene biphenyl fluorescent brightener according to claim 3, it is characterized in that: the effective constituent of filter cake is 4-(2-sodium sulfonate styryl)-4 '-(4-sodium sulfonate styryl)-biphenyl 45-50wt%, 4,4 '-bis--(2-sodium sulfonate styryl) biphenyl 25-30wt%, 4,4 '-bis--(4-sodium sulfonate styryl) biphenyl 25-30wt%.
5. the preparation method of stilbene biphenyl fluorescent brightener according to claim 1, is characterized in that: the part by weight that described dispersion agent and weighting agent add is 2/3-3/2; Weighting agent is salt, anhydrous sodium sulphate or sodium carbonate; Described dispersion agent is sodium methylene bis-naphthalene sulfonate or fatty alcohol and ethylene oxide condensate, or both mixtures, and wherein the weight blending ratio of sodium methylene bis-naphthalene sulfonate and fatty alcohol and ethylene oxide condensate is 1/4-4/1.
6. the preparation method of stilbene biphenyl fluorescent brightener according to claim 5, is characterized in that: the weight blending ratio of sodium methylene bis-naphthalene sulfonate and fatty alcohol and ethylene oxide condensate is 2/3-3/2.
7. the preparation method of stilbene biphenyl fluorescent brightener according to claim 1, is characterized in that: the alkaline matter in the aqueous solution that described pH value is 8-10 is mineral alkali or organic bases; Mineral alkali is potassium hydroxide, sodium hydroxide, sodium carbonate or sodium bicarbonate; Organic bases is Monoethanolamine MEA BASF, diethanolamine or trolamine; Lower aliphatic alcohols is methyl alcohol, ethanol or propyl alcohol.
8. the preparation method of stilbene biphenyl fluorescent brightener according to claim 1, is characterized in that: in described slurries, the particle fineness of particle is 20-40 μ m.
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