CN110409214A - Calcium sulfate crystal whiskers part replaces the technology of pulpboard papermaking - Google Patents
Calcium sulfate crystal whiskers part replaces the technology of pulpboard papermaking Download PDFInfo
- Publication number
- CN110409214A CN110409214A CN201810389079.XA CN201810389079A CN110409214A CN 110409214 A CN110409214 A CN 110409214A CN 201810389079 A CN201810389079 A CN 201810389079A CN 110409214 A CN110409214 A CN 110409214A
- Authority
- CN
- China
- Prior art keywords
- paper
- calcium sulfate
- sulfate crystal
- crystal whiskers
- papermaking
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/46—Non-siliceous fibres, e.g. from metal oxides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
- D21H17/29—Starch cationic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/31—Gums
- D21H17/32—Guar or other polygalactomannan gum
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
- D21H17/45—Nitrogen-containing groups
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Paper (AREA)
Abstract
The present invention relates to a kind of paper technologies: with a kind of inorganic microfiber calcium sulfate crystal whiskers part substituted plant fiber papermaking.The group that hydrogen bond is connect will can be generated with the hydroxyl of plant fiber on calcium sulfate crystal whiskers surface graft, according to the situation of manufacturing paper with pulp of specific paper, paper-making process is added under cationic starch, cation guar gum, cationic polyacrylamide, the auxiliary of silica solution (above four kinds or part).For the replacement rate of plant fiber up to 20% or more, retention of the calcium sulfate crystal whiskers in paper can be papermaking enterprise save the cost at least 100 yuan/ton of paper up to 85%.Particularly, it if this technology is widely popularized, will effectively conserve forests.
Description
Technical field
The invention belongs to pulp and paper technologies
Background technique
Calcium sulfate crystal whiskers are also known as crystal whisker of gypsum, are a kind of inorganic microfibers, there is following features: nontoxic, very big length
Diameter ratio, good dimensional stability, heat resistance, chemical resistance, rigidity, anti-flammability and electrical insulating property.If it is made an addition to paper
Zhang Zhong will assign paper new performance, it might even be possible to make some speciality papers；The calcium sulfate crystal whiskers of rigidity are added in paper pulp, will
Paper-making process fines retention is improved, slurry consumption is reduced, reduces wastewater treatment expense；Slurrying industry is energy consumption rich and influential family, uses sulphur
Sour calcium pyroborate part replaces plant fiber papermaking, by the effectively save energy；Calcium sulfate crystal whiskers price is more much lower than plant fiber, and
And do not have to mashing consumption electric energy, plant fiber papermaking is replaced to part, will take good income for papermaking enterprise；It is most important
, plant fiber papermaking is replaced with calcium sulfate crystal whiskers part, will effectively be conserved forests.
Currently, the laboratory research for thering are many people to carry out exploration to application of the calcium sulfate crystal whiskers in papermaking, due to
Calcium sulfate crystal whiskers are stiff and chemical key connection can not be generated between plant fiber, so in paper after being added to paper
In retention it is not high, and decline paper strength.There are no see that laboratory retention reaches economically feasible up to now
Report, the technology that can let alone actually use.
The present invention, which has successfully carried out production actual use, makes calcium sulfate under the premise of guaranteeing that paper quality does not decline
Whisker reaches 20% or more the, retention in paper instead of rate and has reached 85% to plant fiber.
Summary of the invention
This technology carries out surface modification treatment to calcium sulfate crystal whiskers first, can generate hydrogen with the hydroxyl of plant fiber in grafting
The group of key, be then aided with again cationic starch, cation guar gum, cationic polyacrylamide, silica solution (above four kinds or
Person part, according to specific paper kind and condition selection of manufacturing paper with pulp) carry out paper-making process addition.
Calcium sulfate crystal whiskers are dispersed in water, then plus water (requires) to suitable concentration according to the technique of specific producer,
Then selected according to the specific paper kind and papermaking process of paper plant: being proportionally added into cationic guar solution and be gelatinized it is positive from
Sub- starch is pumped into paper manufacturing streams, is mixed into suitable concentration (according to specific paper with silica solution after cationic polyacrylamide dissolution
Depending on the technique of factory, speed), the fan pump pumping hole of white water chest is added to by metering pump (or other continuous metering modes)；Sun
In the dispersion that calcium sulfate crystal whiskers are added together with cation guar gum, cationic starch in cationic polyacrylamide；Without sun
Ionic starch, cation guar gum are directly added into the dispersion of calcium sulfate crystal whiskers after cationic polyacrylamide, silica solution dissolution
In system.Whisker dispersion be added paper-making process, can intermittent addition dosing chamber, white water chest can also be added to on-line continuous
Fan pump pumping hole.
The adding proportion (relative to paper machine over dry yield) of each chemical assistant:
Cationic starch: 0.05% to 0.2%
Cation guar gum: 0.05% to 0.15%
Cationic polyacrylamide: 0.03% to 0.3%
Silica solution: 0.03% to 0.3%
Specific most suitable ratio needs to do selection adjustment according to the product variety of paper plant, speed, technique.
The beneficial effects of the present invention are: calcium sulfate crystal whiskers replace 20% or more plant fiber (retention up to 85%), reduce
Beating energy consumption is 100 yuan/ton of paper mill save the cost or more；Because the interests in paper mill drive, this technology will be adopted generally
With, if all papermaking enterprises all replace 20% plant fiber with sulfuric acid lid whisker, will reduce papermaking forest cutting capacity 20%, cut
Our unique earth are protected on the spot.
Detailed description of the invention
Fig. 1 is embodiment one.
Fig. 2 is embodiment two.
Fig. 3 is embodiment three.
Fig. 4 is example IV.
Fig. 5 is embodiment five.
Fig. 6 is embodiment six.
Specific embodiment
Embodiment one
In Fig. 1, calcium sulfate crystal whiskers aqueous dispersion is added in starch-guar gum solution, and storage is sent to after being mixed evenly
Pond, then white water chest is sent to by metering pump；Cationic polyacrylamide solution and silica solution pass through metering respectively and are pumped into mixing pit,
Fan pump mouth is pumped by a metering again.
Embodiment two
In Fig. 2, cationic polyacrylamide solution is added in calcium sulfate crystal whiskers+starch+guar gum mixing pit, and silicon
Colloidal sol is individually pumped into fan pump mouth by metering.
Embodiment three
In Fig. 3, after calcium sulfate crystal whiskers, starch-guar gum solution mixing, the dosing chamber of paper manufacturing streams is pumped by diaphragm
It is mixed with paper pulp, fan pump mouth is pumped by metering after cationic polyacrylamide, silica solution mixing.
Example IV
In Fig. 4, calcium sulfate crystal whiskers, starch-guar gum solution, cationic polyacrylamide solution, in unified mixing pit
Then middle mixing is mixed by the dosing chamber that diaphragm is pumped into paper manufacturing streams with paper pulp；Silica solution is individually sent to punching slurry by metering pump
Pumping hole.
Embodiment five
In Fig. 5, calcium sulfate crystal whiskers aqueous dispersion is added in silica solution, cationic polyacrylamide solution, same mixed
It closes and is mixed in pond, then mixed by the dosing chamber that diaphragm is pumped into paper manufacturing streams with paper pulp.
Embodiment six
In Fig. 6, calcium sulfate crystal whiskers aqueous dispersion is added in silica solution, cationic polyacrylamide solution, same mixed
It closes and is mixed in pond, then mixed by the fan pump mouth that diaphragm is pumped into paper manufacturing streams with paper pulp.
Claims (1)
1. a kind of paper technology: with calcium sulfate crystal whiskers part substituted plant fiber papermaking；Calcium sulfate crystal whiskers surface graft can be with plant
The hydroxyl of fibres forms the group of hydrogen bond；Auxiliary material using cationic starch, cation guar gum, cationic polyacrylamide,
Silica solution；Addition manner is to be intermittently added dosing chamber or continuous online addition white water chest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810389079.XA CN110409214A (en) | 2018-04-26 | 2018-04-26 | Calcium sulfate crystal whiskers part replaces the technology of pulpboard papermaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810389079.XA CN110409214A (en) | 2018-04-26 | 2018-04-26 | Calcium sulfate crystal whiskers part replaces the technology of pulpboard papermaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110409214A true CN110409214A (en) | 2019-11-05 |
Family
ID=68346038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810389079.XA Pending CN110409214A (en) | 2018-04-26 | 2018-04-26 | Calcium sulfate crystal whiskers part replaces the technology of pulpboard papermaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110409214A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110934323A (en) * | 2020-01-07 | 2020-03-31 | 湖北中烟工业有限责任公司 | Method for preparing tobacco sheets by compounding gypsum whiskers |
| CN113799514A (en) * | 2021-09-24 | 2021-12-17 | 广州松源实业有限公司 | Environment-friendly paper file box with mould-proof and insect-proof functions |
-
2018
- 2018-04-26 CN CN201810389079.XA patent/CN110409214A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110934323A (en) * | 2020-01-07 | 2020-03-31 | 湖北中烟工业有限责任公司 | Method for preparing tobacco sheets by compounding gypsum whiskers |
| CN113799514A (en) * | 2021-09-24 | 2021-12-17 | 广州松源实业有限公司 | Environment-friendly paper file box with mould-proof and insect-proof functions |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191105 |