CN103146228A - Method for preparing ultrafine uniform calcium silicate filler used for papermaking by utilizing flyash - Google Patents
Method for preparing ultrafine uniform calcium silicate filler used for papermaking by utilizing flyash Download PDFInfo
- Publication number
- CN103146228A CN103146228A CN2013100618531A CN201310061853A CN103146228A CN 103146228 A CN103146228 A CN 103146228A CN 2013100618531 A CN2013100618531 A CN 2013100618531A CN 201310061853 A CN201310061853 A CN 201310061853A CN 103146228 A CN103146228 A CN 103146228A
- Authority
- CN
- China
- Prior art keywords
- calcium silicate
- silicate powder
- powder suspension
- machine
- ultra
- 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.)
- Pending
Links
Abstract
The invention relates to a method for preparing an ultrafine uniform calcium silicate filler used for papermaking by utilizing flyash. The method comprises the following steps of: firstly preparing a water-containing calcium silicate suspension liquid; introducing the water-containing calcium silicate suspension liquid into a pre-hanging machine or a vacuum pulp washer for solid-liquid separation and washing; filtering the washed calcium silicate suspension liquid by a 400 meshes to 800 meshes of screen for removing large particle coarse slag; adding a dispersing agent of (poly ethylene oxide) PEO, delivering the mixture to a deflocculation machine after uniformly mixing; and drying after deflocculation in the deflocculation machine to prepare the ultrafine uniform calcium silicate filler. The calcium silicate micro powder prepared by applying the method has the characteristics of superfineness, uniform particle size, uniform shape, low wear value, high whiteness, stable physical and chemical properties and low impurity content.
Description
Technical field
The invention belongs to pulp technology for making paper, be specifically related to a kind of method of utilizing the standby ultra-fine even calcium silicate filling material of paper grade (stock) of coal ash for manufacturing.
Background technology
In the chemical composition of flyash, silicone content is the highest, is secondly aluminium, exists with the double salt form of complexity, and solubility in acid is relatively poor.Iron level is relatively low, exists with oxide form, and solubility in acid is good.Refine from flyash processing the novel active silicate that forms, can be applicable to the industries such as papermaking, pottery, chemical industry, building, metallurgy, automobile, machinery, electronics, agricultural.
In the prior art, Chinese invention patent CN101591023A " a kind of method of utilizing aluminous fly-ash to prepare calcium silicate micro power ", the core content of this patent of invention is to utilize aluminous fly-ash to prepare calcium silicate micro power.But the Calucium Silicate powder specific surface area that the method is produced is excessive, surpasses 150m
2/ g, granularity is more than 15 μ m.The thick floccule mass aggressiveness of this flyash coproduction Calucium Silicate powder is directly used in papermaking and adds and fill out, and inevitable bonding force with fiber is not enough, affects into the surface strength of paper, causes dry linting to fall hair.Simultaneously, the calcium silicate micro power specific surface area of this method preparation is excessive, and adsorptivity is excessively strong, and is stronger to the absorption of papermaking workshop section chemical, strengthened the consumption of chemical, increased production cost.One of gordian technique of flyash coproduction Calucium Silicate powder is exactly size-grade distribution and the microtexture problem that solves Calucium Silicate powder, makes it refinement and has the specific regularity of distribution, adds the requirement of filling out to reach papermaking.
Summary of the invention
The object of the invention is to propose a kind of method of utilizing the standby ultra-fine even calcium silicate filling material of paper grade (stock) of coal ash for manufacturing.Use the calcium silicate micro power that the method is produced, have ultra-fine, epigranular, the pattern homogeneous, wear(ing)value is little, whiteness is high, physicochemical property are stable, the characteristics that foreign matter content is low.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
1) according to application number be: 200810112618.1, publication number is: the moisture Calucium Silicate powder suspension of " a kind of method of utilizing aluminous fly-ash to prepare calcium silicate micro power " preparation of CN101591023A;
2) the moisture Calucium Silicate powder suspension of gained is passed into pre-on-hook or vacuum pulp washing machine and carry out solid-liquid separation and washing, the Calucium Silicate powder suspension after washing is crossed 400 orders～800 eye mesh screens with 5%～40% mass concentration, removes the thick slag of macrobead;
3) add the dispersion agent polyoxyethylene PEO of relative Calucium Silicate powder oven-dry weight 0.1%～1% in the Calucium Silicate powder suspension after sieve, be pumped to cracking flossing machine after mixing, separate the wadding post-drying and make ultra-fine even calcium silicate filling material in cracking flossing machine.
It is 0.01～0.1% dispersant solution that described dispersion agent first is mixed with mass concentration.
Separating the wadding time in described cracking flossing machine is 1～60min.
Described bake out temperature is 100～500 ℃.
Advantage and positively effect that the present invention has compared with the prior art are: one, under the prerequisite of the pattern that does not change the calcium silicate micro power that makes, can efficiently reduce the particle diameter of flyash coproduction calcium silicate micro power and the homogeneity of granularity.Moisture Calucium Silicate powder suspension passes into pre-on-hook or vacuum pulp washing machine carries out solid-liquid separation and washing, and cross screen cloth, can remove the thick slag of macrobead, reduces foreign matter content.The interpolation of dispersion agent and the use of cracking flossing machine can solve formed group cotton-shaped adhesion oversize particle structure in flyash coproduction Calucium Silicate powder building-up process efficiently, make the Calucium Silicate powder that makes obtain separating the wadding refinement and have certain size-grade distribution, add the service requirements of filling out to adapt to field of papermaking, thereby make the standby ultra-fine even calcium silicate filling material technology of paper grade (stock) of coal ash for manufacturing more perfect.After wadding a quilt with cotton by solution, the particle diameter of calcium silicate micro power can be reduced to 1～5 μ m, and size distribution is narrower, and before not separating wadding, median size is up to 20～30 μ m, and size distribution is wider.Two, can effectively reduce the specific surface area of filler, the calcium silicate micro power specific surface area that makes through this method can be reduced to 60m
2Below/g, thereby solve the excessive adsorption problem to chemical that it in use produces.Three, can reduce the wear(ing)value of calcium silicate micro power, reduce it in use to the wearing and tearing of equipment, have important practical significance.
Embodiment
Below in conjunction with embodiment, the present invention is further elaborated.
Following examples aluminous fly-ash used all adopts SiO
2Massfraction is 49.74%, Al
2O
3Massfraction is 31.92%, Fe
2O
3Content is that 1.83% flyash is raw material, raw material is carried out the magnetic separator deironing process, and makes Fe
2O
3Content is lower than 1%;
Embodiment 1:
1) according to application number be: 200810112618.1, publication number is: the moisture Calucium Silicate powder suspension of " a kind of method of utilizing aluminous fly-ash to prepare calcium silicate micro power " preparation of CN101591023A;
2) the moisture Calucium Silicate powder suspension of gained is passed into pre-on-hook or vacuum pulp washing machine and carry out solid-liquid separation and washing, the Calucium Silicate powder suspension after washing is crossed 800 eye mesh screens with 5% mass concentration, removes the thick slag of macrobead;
3) get the dispersion agent polyoxyethylene PEO of Calucium Silicate powder suspension mesosilicic acid calcium oven-dry weight 0.1%, be mixed with mass concentration and be 0.02% dispersant solution, then dispersant solution is joined and be pumped to cracking flossing machine 30min after mixing in the Calucium Silicate powder suspension after sieving, makes ultra-fine even calcium silicate filling material in 300 ℃ of oven dry separate wadding in cracking flossing machine after.
The calcium silicate micro power that makes is detected, obtains its part physical properties as follows:
Median size: 4.1 μ m; Specific surface area: 58.2m
2/ g; Whiteness: 89.8ISO; 400 mesh screen residues (%) 2.1%; Wear(ing)value (mg/2000 time):＜3.0
Embodiment 2:
1) according to application number be: 200810112618.1, publication number is: the moisture Calucium Silicate powder suspension of " a kind of method of utilizing aluminous fly-ash to prepare calcium silicate micro power " preparation of CN101591023A;
2) the moisture Calucium Silicate powder suspension of gained is passed into pre-on-hook or vacuum pulp washing machine and carry out solid-liquid separation and washing, the Calucium Silicate powder suspension after washing is crossed 400 eye mesh screens with 20% mass concentration, removes the thick slag of macrobead;
3) get the dispersion agent PEO of Calucium Silicate powder suspension mesosilicic acid calcium oven-dry weight 0.5%, be mixed with mass concentration and be 0.06% dispersant solution, then dispersant solution is joined and be pumped to cracking flossing machine 1min after mixing in the Calucium Silicate powder suspension after sieving, makes ultra-fine even calcium silicate filling material in 100 ℃ of oven dry separate wadding in cracking flossing machine after.
Embodiment 3:
1) according to application number be: 200810112618.1, publication number is: the moisture Calucium Silicate powder suspension of " a kind of method of utilizing aluminous fly-ash to prepare calcium silicate micro power " preparation of CN101591023A;
2) the moisture Calucium Silicate powder suspension of gained is passed into pre-on-hook or vacuum pulp washing machine and carry out solid-liquid separation and washing, the Calucium Silicate powder suspension after washing is crossed 500 eye mesh screens with 30% mass concentration, removes the thick slag of macrobead;
3) get the dispersion agent polyoxyethylene PEO of Calucium Silicate powder suspension mesosilicic acid calcium oven-dry weight 0.8%, be mixed with mass concentration and be 0.01% dispersant solution, then dispersant solution is joined and be pumped to cracking flossing machine 40min after mixing in the Calucium Silicate powder suspension after sieving, makes ultra-fine even calcium silicate filling material in 500 ℃ of oven dry separate wadding in cracking flossing machine after.
Embodiment 4:
1) according to application number be: 200810112618.1, publication number is: the moisture Calucium Silicate powder suspension of " a kind of method of utilizing aluminous fly-ash to prepare calcium silicate micro power " preparation of CN101591023A;
2) the moisture Calucium Silicate powder suspension of gained is passed into pre-on-hook or vacuum pulp washing machine and carry out solid-liquid separation and washing, the Calucium Silicate powder suspension after washing is crossed 600 eye mesh screens with 10% mass concentration, removes the thick slag of macrobead;
3) get the dispersion agent PEO of Calucium Silicate powder suspension mesosilicic acid calcium oven-dry weight 1%, be mixed with mass concentration and be 0.08% dispersant solution, then dispersant solution is joined and be pumped to cracking flossing machine 60min after mixing in the Calucium Silicate powder suspension after sieving, makes ultra-fine even calcium silicate filling material in 400 ℃ of oven dry separate wadding in cracking flossing machine after.
Embodiment 5:
1) according to application number be: 200810112618.1, publication number is: the moisture Calucium Silicate powder suspension of " a kind of method of utilizing aluminous fly-ash to prepare calcium silicate micro power " preparation of CN101591023A;
2) the moisture Calucium Silicate powder suspension of gained is passed into pre-on-hook or vacuum pulp washing machine and carry out solid-liquid separation and washing, the Calucium Silicate powder suspension after washing is crossed 700 eye mesh screens with 40% mass concentration, removes the thick slag of macrobead;
3) get the dispersion agent polyoxyethylene PEO of Calucium Silicate powder suspension mesosilicic acid calcium oven-dry weight 0.3%, be mixed with mass concentration and be 0.1% dispersant solution, then dispersant solution is joined and be pumped to cracking flossing machine 10min after mixing in the Calucium Silicate powder suspension after sieving, makes ultra-fine even calcium silicate filling material in 200 ℃ of oven dry separate wadding in cracking flossing machine after.
Claims (4)
1. one kind is utilized coal ash for manufacturing for the method for the ultra-fine even calcium silicate filling material of paper grade (stock), it is characterized in that comprising the following steps:
1) the moisture Calucium Silicate powder suspension of preparation;
2) the moisture Calucium Silicate powder suspension of gained is passed into pre-on-hook or vacuum pulp washing machine and carry out solid-liquid separation and washing, the Calucium Silicate powder suspension after washing is crossed 400 orders～800 eye mesh screens with 5%～40% mass concentration, removes the thick slag of macrobead;
3) add the dispersion agent polyoxyethylene PEO of relative Calucium Silicate powder oven-dry weight 0.1%～1% in the Calucium Silicate powder suspension after sieve, be pumped to cracking flossing machine after mixing, separate the wadding post-drying and make ultra-fine even calcium silicate filling material in cracking flossing machine.
2. the method for utilizing the standby ultra-fine even calcium silicate filling material of paper grade (stock) of coal ash for manufacturing according to claim 1 is characterized in that: it is 0.01～0.1% dispersant solution that described dispersion agent first is mixed with mass concentration.
3. the coal ash for manufacturing that utilizes according to claim 1 is for the method for the ultra-fine even calcium silicate filling material of paper grade (stock), and it is characterized in that: separating the wadding time in described cracking flossing machine is 1～60min.
4. the coal ash for manufacturing that utilizes according to claim 1 is for the method for the ultra-fine even calcium silicate filling material of paper grade (stock), and it is characterized in that: described bake out temperature is 100～500 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100618531A CN103146228A (en) | 2013-02-27 | 2013-02-27 | Method for preparing ultrafine uniform calcium silicate filler used for papermaking by utilizing flyash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100618531A CN103146228A (en) | 2013-02-27 | 2013-02-27 | Method for preparing ultrafine uniform calcium silicate filler used for papermaking by utilizing flyash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103146228A true CN103146228A (en) | 2013-06-12 |
Family
ID=48544568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100618531A Pending CN103146228A (en) | 2013-02-27 | 2013-02-27 | Method for preparing ultrafine uniform calcium silicate filler used for papermaking by utilizing flyash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103146228A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103833A (en) * | 2016-09-27 | 2018-06-01 | 郑州源冉生物技术有限公司 | A kind of preparation method of paper grade (stock) compounded mix |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747439A (en) * | 2011-04-21 | 2012-10-24 | 中国科学院合肥物质科学研究院 | Disperse nanocomposite and preparation method thereof |
-
2013
- 2013-02-27 CN CN2013100618531A patent/CN103146228A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747439A (en) * | 2011-04-21 | 2012-10-24 | 中国科学院合肥物质科学研究院 | Disperse nanocomposite and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108103833A (en) * | 2016-09-27 | 2018-06-01 | 郑州源冉生物技术有限公司 | A kind of preparation method of paper grade (stock) compounded mix |
| CN108103833B (en) * | 2016-09-27 | 2020-11-03 | 太和县鸿盛纸业有限公司 | Preparation method of composite filler for papermaking |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102106815B1 (en) | Microfibrous cellulose content | |
| CN107630385B (en) | Microfibrous cellulose aggregate, process for producing same, and process for remanufacturing microfibrous cellulose dispersion | |
| CN101634120B (en) | Method for improving performance of paper stock in retention and drainage aiding | |
| CN109133072B (en) | Method for preparing hydrophobic silica aerogel by using iron tailings as raw materials at ultra-fast speed | |
| CN104452425B (en) | Microfiber cellulose enveloped and retained high filling papermaking process | |
| CN102351230A (en) | Preparation method of ultrafine active heavy calcium carbonate | |
| CN110092386B (en) | Method for purifying attapulgite clay | |
| CN110980754B (en) | Preparation method of natural sodium bentonite | |
| CN102876086A (en) | Wet-process surface treatment method for superfine heavy calcium carbonate | |
| CN102817282B (en) | Pulp, pulp manufacturing method, body paper and papermaking method | |
| CN103012850A (en) | One-step process for preparing surface organic modified nanometer mineral fiber | |
| US10017421B2 (en) | Method for preparing active calcium silicate | |
| CN113462201B (en) | Bentonite inorganic gel for washing powder and preparation method thereof | |
| CN108172419B (en) | enhanced diaphragm paper for super electrolytic capacitor and preparation method thereof | |
| CN1613818A (en) | Production for superfine kaolin | |
| CN103146228A (en) | Method for preparing ultrafine uniform calcium silicate filler used for papermaking by utilizing flyash | |
| CN114263069A (en) | Low-voltage low-loss electrolytic capacitor paper and preparation method and application thereof | |
| CN112458791B (en) | Corrugated paper processing technology for improving easy glue opening of corrugated paper surface sizing agent | |
| CN105951198B (en) | The preparation method of the polyester fiber of activated carbon containing waste wool | |
| CN101514265A (en) | Mixed calcium carbonate, preparation method and application thereof | |
| CN108004054B (en) | Softening functional particle for washing powder and preparation method thereof | |
| CN111215025A (en) | Composite adsorbent and preparation method and application thereof | |
| CN106283861A (en) | A kind of retention aid for paper making and preparation method thereof | |
| CN104294703B (en) | A kind of modified abrasive calcium carbonate and production method thereof | |
| JPH0457795B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130612 |