CN103011228A - Preparation method of ultrafine coating light calcium carbonate - Google Patents
Preparation method of ultrafine coating light calcium carbonate Download PDFInfo
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- CN103011228A CN103011228A CN2012105879336A CN201210587933A CN103011228A CN 103011228 A CN103011228 A CN 103011228A CN 2012105879336 A CN2012105879336 A CN 2012105879336A CN 201210587933 A CN201210587933 A CN 201210587933A CN 103011228 A CN103011228 A CN 103011228A
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Abstract
The invention provides a preparation method of ultrafine coating light calcium carbonate. The preparation method comprises the following steps of: adding a compound dispersant to calcium hydroxide water slurry, then sending the slurry to grinding equipment to be ground and simultaneously filling carbon dioxide gas to carry out carbonization, and carbonizing the slurry until the pH value of the calcium hydroxide slurry is 6.5-7.5, thus obtaining the slurry containing ultrafine light calcium carbonate, wherein the compound dispersant comprises mixed phosphate salt, sodium polyacrylate and citrate; and the mixed phosphate salt is a mixture of dodecanol phosphomonoester and heptadecanol phosphodiester. The preparation method has the advantages that the prepared ultrafine light calcium carbonate slurry is directly used for coating without drying, thus not only saving the cost but also avoiding the problem of flocculation of ultrafine grains in the drying process; the ultrafine light calcium carbonate produced by the method has a small grain size; the slurry prepared from the ultrafine light calcium carbonate has low viscosity; and used for coating paper, the ultrafine light calcium carbonate can improve the quality of paper and reduce the production cost.
Description
Technical field
The present invention relates to a kind of preparation method of ultra-fine coating fine particle calcium carbonate.
Background technology
Paper Coating speed has obtained surprising progress in recent years, and particularly machine is coated with outward, and its operation has reached 1700m/min, even surpasses 2000m/min.Under such high-speed coating condition, a lot of coating qualities and operation problem can appear.Particularly White Board intensity and glossiness are had relatively high expectations.
Light calcium carbonate is a kind of important Inorganic Chemicals, and generally about 400 orders, grain diameter is large for the light calcium carbonate powder fineness of producing with common carborization, and coacervation is serious between the particle, has affected the application of light calcium carbonate.
CN1884085A discloses a kind of preparation method of superfine light calcium carbonate, in this patent employing phosphate ester salt, sodium polyacrylate, trolamine, trisodium phosphate, sodium polyphosphate or the Sodium hexametaphosphate 99 one or more are as dispersion agent simultaneous grinding in the calcium hydroxide slurry carbonization process, the median size of the calcium carbonate superfine powder that obtains is 0.2-2.0 μ m, wherein accounts for the 80-100% of total particle number less than the particle of 2 μ m.Yet the disclosed technology of this patent is applied in the high-speed coating process, and its contribution to indexs such as paper strength and glossiness still remains further to be improved.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of preparation method of ultra-fine coating light calcium carbonate, the defects that exists to overcome prior art.
Method of the present invention comprises the steps:
In the calcium hydroxide water slurry, add composite dispersing agent, then slurry is sent into grinding plant and ground, pass into carbon dioxide from the grinding plant bottom simultaneously and carry out carbonization, grinding and carbonization are carried out simultaneously;
Carbonization temperature is 10-70 ℃, and carbonization is 6.5-7.5 to the pH of calcium hydroxide slurry, i.e. acquisition contains the slurry of superfine light calcium carbonate;
Described composite dispersing agent is comprised of mixed phosphate ester salt, sodium polyacrylate and citrate.
Each constituent mass percentage composition is in the described composite dispersing agent: mixed phosphate ester salt 40-55%, sodium polyacrylate 30-40% and citrate 10-25%, and each component percentage composition sum is 100%;
The preferred acetylizad citrate of described citrate, preferably Triethyl citrate acetate or acetyl tributyl citrate;
Preferably, described mixed phosphate ester salt is the mixture of phosphoric acid lauryl alcohol monoester salt and phosphoric acid heptadecyl alcohol dibasic acid esters salt, and the mol ratio of described phosphoric acid lauryl alcohol monoester salt and phosphoric acid heptadecyl alcohol dibasic acid esters salt is 1:1～1.5;
Described mixed phosphate ester salt is ammonium salt, sodium salt or the sylvite of mixed phosphate ester;
The weight concentration of described calcium hydroxide water slurry is 5-25%, and the adding weight of described composite dispersing agent is the 0.05-3% of calcium hydroxide dry weight;
The median size of the superfine light calcium carbonate that obtains is 0.2-2.0 μ m, and wherein grain diameter accounts for the 95-100% of total particle number less than the particle of 2 μ m.
The contriver studies discovery, on the prior art basis, improve the dispersion agent prescription, compound a certain proportion of citrate, the superfine light calcium carbonate that grinding obtains is applied to Paper Coating, and the performances such as its paper smoothness, surface strength of paper, glossiness have remarkable enhancing.The prepared superfine light calcium carbonate of the present invention is used for paper making and cloth coating pigment.Be mainly used in the coating pigment of art paper, coated manila, ivory board, to replace expensive import kaolin and calcined kaolin.The prepared ultra-fine light calcium carbonate slurry of the present invention is directly used in coating and need not dries, and has not only saved cost, has also avoided the group wadding problem of ultra-fine grain in drying process.The superfine light calcium carbonate fine size that the method according to this invention is produced, it is low to make slurry viscosity, is used for the quality that Paper Coating can improve paper, reduces production costs.
Embodiment
Among the embodiment, if no special instructions, the content of component all is weight percentage.
Embodiment 1
In weight concentration is 5% calcium hydroxide (median size is 5 μ m) water slurry; be incorporated as 0.08% composite dispersing agent of calcium hydroxide dry weight, described composite dispersing agent is comprised of 40% the mixed phosphate ester sodium salt that contains 18 carbon atoms, 40% sodium polyacrylate and 20% Triethyl citrate acetate.The mixed phosphate ester sodium salt is the mixture of phosphoric acid lauryl alcohol monoester sodium salt and phosphoric acid heptadecyl alcohol dibasic acid esters sodium salt, and the mol ratio of monoesters and dibasic acid esters is 1:1.
Calcium hydroxide slurry is pumped into 300 liters of vertical grinding machines of two series connection with pneumatic diaphragm, and feed rate is 15 liter/mins of clocks.From every logical pure carbon dioxide gas in sand mill bottom, the flow of carbonic acid gas is 90 liter/mins of clocks, opens sand mill, and grinding and carbonization are carried out simultaneously simultaneously.The slurry carbonization that goes out second sand mill is good, and the pH of slurry is 7.0, and carbonization temperature is 70 ℃, and the median size of the calcium carbonate superfine powder that obtains is 0.2 μ m, and wherein the particle less than 2 μ m accounts for 99% of total particle number.
Embodiment 2
In weight concentration is 20% calcium hydroxide (median size is 10 μ m) water slurry; be incorporated as 2% composite dispersing agent of calcium hydroxide dry weight, described composite dispersing agent is comprised of 55% the mixed phosphate ester ammonium salt that contains 12 carbon atoms, 30% sodium polyacrylate and 15% Triethyl citrate acetate.The mixed phosphate ester ammonium salt is the mixture of phosphoric acid lauryl alcohol monoesters ammonium salt and phosphoric acid heptadecyl alcohol dibasic acid esters ammonium salt, and the mol ratio of monoesters and dibasic acid esters is 1:1.5 in the mixed phosphate ester ammonium salt.
Calcium hydroxide slurry is pumped into 80 liters vertical grinding machine of 5 series connection with pneumatic diaphragm, and feed rate is 8 liter/mins of clocks.From every logical pure carbon dioxide gas in sand mill bottom, the flow of carbonic acid gas is 50 liter/mins of clocks, opens sand mill, and grinding and carbonization are carried out simultaneously simultaneously.The slurry carbonization that goes out the 5th sand mill is good, and the pH of slurry is 6.9, and carbonization temperature is 45 ℃, and the median size of the calcium carbonate superfine powder that obtains is 0.2 μ m, and wherein the particle less than 2 μ m accounts for 100% of total particle number.
Comparative Examples 1
In weight concentration is 20% calcium hydroxide (median size is 10 μ m) water slurry, be incorporated as 1.5% the phosphoric acid ester ammonium salt that contains 12 carbon atoms of ultra-fine calcium hydroxide dry weight, be incorporated as simultaneously 0.5% sodium polyacrylate of calcium hydroxide dry weight, calcium hydroxide slurry is pumped into 80 liters vertical grinding machine of 5 series connection with pneumatic diaphragm, and feed rate is 8 liter/mins of clocks.From every logical pure carbon dioxide gas in sand mill bottom, the flow of carbonic acid gas is 50 liter/mins of clocks, opens sand mill, and grinding and carbonization are carried out simultaneously simultaneously.The slurry carbonization that goes out the 5th sand mill is good, and the pH of slurry is 6.7, and carbonization temperature is 45 ℃, and the median size of the calcium carbonate superfine powder that obtains is 0.4 μ m, and wherein the particle less than 2 μ m accounts for 99% of total particle number.
Application Example 1
Be coated with in the prescription at 18# machine chromo board face, use above-described embodiment superfine light calcium carbonate sample to replace U.S.'s china clay and calcined kaolin partly, the performance variation situations such as the physical index of investigation coating pattern and printability.Face is coated with experiment and adopts band ivory board midway, uses linear spreading rod to carry out face and is coated with glue spread 10g/m
2Compare with the coating pattern of original formulation.Coating rolling condition: get respectively above-mentioned coating pattern with twice of the hard press polish of small-sized rolling press (0.3Mpa, 90 ℃).
Table 1 face is coated with face and is coated with prescription
Table 2 coating pattern detects data
From the result, to compare with Comparative Examples under the similarity condition, above-described embodiment superfine light calcium carbonate partly replaces U.S.'s china clay and calcined kaolin, and the smoothness of pattern, coating glossiness, surface strength all are significantly improved.
Claims (7)
1. the preparation method of ultra-fine coating light calcium carbonate, it is characterized in that, comprise the steps: in the calcium hydroxide water slurry, to add composite dispersing agent, then slurry being sent into grinding plant grinds, pass into simultaneously carbon dioxide and carry out carbonization, grinding and carbonization are carried out simultaneously, carbonization temperature is 10-70 ℃, carbonization is 6.5-7.5 to the pH of calcium hydroxide slurry, i.e. acquisition contains the slurry of superfine light calcium carbonate;
Described composite dispersing agent is comprised of mixed phosphate ester salt, sodium polyacrylate and citrate;
Each constituent mass percentage composition is in the described composite dispersing agent: mixed phosphate ester salt 40-55%, sodium polyacrylate 30-40% and citrate 10-25%, and each component percentage composition sum is 100%;
Described mixed phosphate ester salt is the mixture of phosphoric acid lauryl alcohol monoester salt and phosphoric acid heptadecyl alcohol dibasic acid esters salt.
2. method according to claim 1 is characterized in that, described citrate is acetylizad citrate.
3. method according to claim 2 is characterized in that, described citrate is Triethyl citrate acetate or acetyl tributyl citrate.
4. method according to claim 1 is characterized in that, the mol ratio of described phosphoric acid lauryl alcohol monoester salt and phosphoric acid heptadecyl alcohol dibasic acid esters salt is 1:1～1.5.
5. method according to claim 4 is characterized in that, described mixed phosphate ester salt is ammonium salt, sodium salt or the sylvite of mixed phosphate ester.
6. each described method is characterized in that according to claim 1～5, and the weight concentration of described calcium hydroxide water slurry is 5-25%, and the adding weight of described composite dispersing agent is the 0.05-3% of calcium hydroxide dry weight.
7. method according to claim 6 is characterized in that, described grinding plant is sand mill or stirs mill, the grinding plant use of can connecting more than or two.
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| CN2012105879336A CN103011228A (en) | 2012-12-28 | 2012-12-28 | Preparation method of ultrafine coating light calcium carbonate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988794A (en) * | 2015-06-19 | 2015-10-21 | 赵兰 | Coating for improving smoothness of coated paper and application |
| CN110482586A (en) * | 2019-08-28 | 2019-11-22 | 广西合山市华纳新材料科技有限公司 | A kind of preparation method of light calcium carbonate for carbon-free copying paper |
| US10822442B2 (en) | 2017-07-17 | 2020-11-03 | Ecolab Usa Inc. | Rheology-modifying agents for slurries |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1526642A (en) * | 2003-03-05 | 2004-09-08 | 上海东升新材料有限公司 | Prepn of superfine light precipited calcium carbonate |
| CN1284729C (en) * | 2004-06-17 | 2006-11-15 | 北京化工大学 | Method for preparing superfine light calcium carbonate |
| CN1884085A (en) * | 2006-06-29 | 2006-12-27 | 上海东升新材料有限公司 | Process for preparing superfine light calcium carbonate |
| CN102502749A (en) * | 2011-10-20 | 2012-06-20 | 福建省万旗非金属材料有限公司 | Method for preparing rose calcium carbonate from low-grade limestone |
-
2012
- 2012-12-28 CN CN2012105879336A patent/CN103011228A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1526642A (en) * | 2003-03-05 | 2004-09-08 | 上海东升新材料有限公司 | Prepn of superfine light precipited calcium carbonate |
| CN1284729C (en) * | 2004-06-17 | 2006-11-15 | 北京化工大学 | Method for preparing superfine light calcium carbonate |
| CN1884085A (en) * | 2006-06-29 | 2006-12-27 | 上海东升新材料有限公司 | Process for preparing superfine light calcium carbonate |
| CN102502749A (en) * | 2011-10-20 | 2012-06-20 | 福建省万旗非金属材料有限公司 | Method for preparing rose calcium carbonate from low-grade limestone |
Non-Patent Citations (2)
| Title |
|---|
| 刘亚雄: "玫瑰形碳酸钙的合成及其应用", 《广东化工》 * |
| 韩艳敏等: "微波对玫瑰红型碳酸钙的制备及性能影响", 《广州化工》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988794A (en) * | 2015-06-19 | 2015-10-21 | 赵兰 | Coating for improving smoothness of coated paper and application |
| US10822442B2 (en) | 2017-07-17 | 2020-11-03 | Ecolab Usa Inc. | Rheology-modifying agents for slurries |
| CN110482586A (en) * | 2019-08-28 | 2019-11-22 | 广西合山市华纳新材料科技有限公司 | A kind of preparation method of light calcium carbonate for carbon-free copying paper |
| CN110482586B (en) * | 2019-08-28 | 2021-11-05 | 广西合山市华纳新材料科技有限公司 | Preparation method of light calcium carbonate for carbonless copy paper |
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Application publication date: 20130403 |