CN101475199A - Industrial preparation of calcium carbonate nano bead string - Google Patents
Industrial preparation of calcium carbonate nano bead string Download PDFInfo
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- CN101475199A CN101475199A CNA2009100140504A CN200910014050A CN101475199A CN 101475199 A CN101475199 A CN 101475199A CN A2009100140504 A CNA2009100140504 A CN A2009100140504A CN 200910014050 A CN200910014050 A CN 200910014050A CN 101475199 A CN101475199 A CN 101475199A
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Abstract
The invention discloses an industrial preparation method for calcium carbonate nanometer beads, which is an industrial preparation method for nanometer calcium carbonate with a bead-shaped structure, and comprises the following steps that: (1) natural limestone is crushed and calcined, then is added with hot water for digestion, and passes through a sieve for refining to be prepared into a refined calcium hydroxide material liquid; (2) the calcium hydroxide slurry is sent into a reactor system, proper kiln gas is aerated for carbonization reaction, the concentration of carbon dioxide in the kiln gas is between 10 and 50 percent, and a crystal control agent composition A and a crystal control agent composition B are added before the carbonization or at an initial carbonization stage; and (3) an obtained product is filtered, dried and crushed to obtain the bead-shaped nanometer calcium carbonate. The diameter of the bead-shaped nanometer calcium carbonate is between 20 and 50nm, the slenderness ratio is between 10 and 30, and the BET specific surface area is larger than 30m<2>/g. The bead-shaped nanometer calcium carbonate has good dispersivity, improves the mechanical property of materials, and improves the barrier property of the materials to various gases and liquids, so the bead-shaped nanometer calcium carbonate can be widely applied to industries such as rubber, plastic, coating, printing ink, paper making, sealing gum and the like.
Description
Technical field
The present invention relates to a kind of industrial production process that nano level has beading structure precipitated chalk of producing.
Background technology
The nano-calcium carbonate calcium material is meant the ultrafine powder lime carbonate of particle size size at 1～100nm.Because the super-refinement of Nano particles of calcium carbonate, its crystalline structure and surface electronic structure change.Studies show that the bigger distorting stress of existence in its microlitic structure in a large number, produced quantum size effect that common light calcium carbonate did not have and surface effects, it is compared with conventional material at aspects such as mechanics, photo-thermal resistance and fusing points demonstrate high-performance.But as a kind of inorganic functional material with nano level structure, because itself is different with the interfacial property of organic polymer material matrix and have a very big surface energy, make both affinitys poor, cause the appearance of problems such as the bad easy reunion of the dispersion of nano-calcium carbonate in organic polymer material, crosslinked and functional difference, finally influenced the application of nano-calcium carbonate.
In order to satisfy the application requiring of nano-calcium carbonate in high-end industries such as organic polymer material, expand its Application Areas, must improve its dispersiveness and affinity in organic materials by special morphology control and surface treatment means.When lime carbonate crystal grain can be grown by single direction on specific crystal face, formation has beading or fibrous packaging assembly, so this packaging assembly just can overcome the agglomeration of single particle in application process to a certain extent, improves its dispersiveness at application system; In the processing of organic polymer material, mostly there is stronger mechanically mixing process, some tie points in the beading structure nano lime carbonate can rupture, these breaking points have higher activity, have strengthened the affinity of itself and application system, finally can improve the physicals of product.
United States Patent (USP) (US 4,157,379) goes out to have the fibrous carbonic acid calcium particle of nano level structure by two step Carbonization Preparation.At first, adding 2Na.EDTA or other organic acid sequestrants form soliquid as crystal control agent in milk of lime; Then, add soluble metal salt, under the condition of control pH value, carry out carburizing reagent.The diameter of preparing precipitated chalk is between 10～100nm, and length-to-diameter ratio is 10～30, but because preparation technology adopts two-step approach, the technological operation more complicated is unfavorable for suitability for industrialized production.
It is crystal control agent that United States Patent (USP) (US2004/0166047A1) adopts citric acid, polyacrylic acid or poly aspartic acid, under lower temperature, obtain having the lime carbonate fiber composition of nano-grade size by the single stage method carbonization of milk of lime, comprise nano bead string, nano-plates or its mixture.The calcium carbonate nano bead string diameter of preparing is 20～50nm, and length-to-diameter ratio is that the static dried product of 10～30,75 ℃ of vacuum is that the cryogenic nitrogen adsorption method is measured through BET (Brunauer-Enmet-Teller), and its BET specific surface area is 20～50m
2/ g.
Summary of the invention
Purpose of the present invention just provides the industrial production process that a kind of production has the beading structure, has good distribution performance nano-calcium carbonate.
Technical scheme of the present invention comprises the following steps: that (1) is with weight ratio CaCO
3For: MgCO 85-99%,
3For: after 0.1-3% natural limestone fragmentation, the calcining, be mixed with refining calcium hydroxide feed liquid after the hot water that adds 50-90 ℃ digests, sieves, the concentration of refining calcium hydroxide feed liquid is 30-120g/l;
(2) will make with extra care calcium hydroxide slurry and send into reactor assembly, feeding the kiln gas flow is 300-900m
3/ h carries out carburizing reagent, 10-50 ℃ of carbonization temperatures, and concentration of carbon dioxide is 10-50% in the kiln gas, carbonization preceding or carbonization initial stage interpolation crystal control agent composition A and composition B, kiln gas passes to reaction to be finished; The ratio of composition A and composition B addition is 0:1～2:1; The total addition of composition A and composition B be in the slurry contained calcium hydroxide quality 0.5～5%;
(3) product that obtains according to the described method of step (2) after filtration, make the beading nano-calcium carbonate after drying and the fragmentation;
(4) an amount of combination C of product heating back adding that obtains according to (2) described method carries out surface treatment, the total addition of composition C be in the feed liquid lime carbonate quality 2-10%, composition C can be mixed with the aqueous solution earlier, the mass ratio of composition C and water is 1:5-1:15, the surface-treated temperature is 60～95 ℃, after surface treatment finishes after filtration, make catenate nm-class active calcium carbonate after drying and the fragmentation.
In step 2) in, composition A is selected from one or more mixture of sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, sodium lauryl sulfate, aerosol-OT and sodium dibutyl naphthalene sulfonate, composition B is selected from one or more mixture of Trisodium Citrate, ammonium citrate, tripoly phosphate sodium STPP, Potassium tripolyphosphate, trisodium phosphate and potassium pyrophosphate, and the ratio of composition A and composition B addition is comparatively favourable less than 1:1 in the carbonization process.
In step 4), composition C is one or more the mixture in stearic acid and sodium hydroxide, palmitinic acid and sodium hydroxide and oleic acid and the sodium hydroxide, the addition of composition C be in the feed liquid lime carbonate quality 1～10%, addition is comparatively favourable greater than 2%.
According to above-mentioned preferred version, the calcium hydroxide feed liquid generates the precipitated chalk with nano level characteristic dimension by under special appearance control agent and strict process control after carburizing reagent, be the beading structure, diameter is 20～50nm, and length-to-diameter ratio is 10～30, and the BET specific surface area is greater than 30m
2/ g.The nano-calcium carbonate with beading structure that the present invention produces is as functional filler, has good dispersiveness, can improve the mechanical property of material, and because it has bigger specific surface area, can improve the barrier properties of material, therefore can well be applied in the industries such as rubber, plastics, coating, printing ink, papermaking all gases and liquid.
Description of drawings
The transmission electron microscope photo of the beading nano-calcium carbonate of Fig. 1 embodiment 1.
The transmission electron microscope photo of the beading nano-calcium carbonate of Fig. 2 embodiment 2.
The transmission electron microscope photo of the treated carbonates nano bead string of Fig. 3 embodiment 3.
The transmission electron microscope photo of the treated carbonates nano bead string of Fig. 4 embodiment 4.
Embodiment
Embodiment 1
With CaCO
3Content is 96%, MgCO
3After content was 0.7% natural limestone fragmentation, calcining, the hot water that adds 60 ℃ digested, crosses 250 mesh sieves, was mixed with refining calcium hydroxide feed liquid after the thin up modulation again, and the concentration of described refining calcium hydroxide feed liquid is 80g/l.
To 20m
3Reactor in add 14m
3The above-mentioned calcium hydroxide slurry of concentration then adds 10 kilograms of trisodium phosphates, and the feeding carbonated is that the kiln gas of 25% (volumetric concentration) carries out carbonization, and the flow control of kiln gas is at 650m
3/ h, the temperature of reaction of whole carbonization process must not be higher than 40 ℃.When carbonization when the pH value reaches 8, add and continue carbonization to reaction after 8 kilograms of sodium lauryl sulphate and finish, homodisperse calcium carbonate slurry is stand-by, entire reaction is no more than 3 hours.
With calcium carbonate slurry filter, 150 ℃ of dryings, fragmentation, the beading nano-calcium carbonate.This product is shown in the transmission electron microscope of Fig. 1, and the diameter of product is at 30～50nm, and length-to-diameter ratio is 10～30, and the BET specific surface area is 36m
2/ g.This product is dispersed better, whiteness is high, and is mobile good, is applicable to the high grade coated paper functional filler.
Embodiment 2
With CaCO
3Content is 96%, MgCO
3After content was 0.7% natural limestone fragmentation, calcining, the hot water that adds 70 ℃ digested, crosses 250 mesh sieves, was mixed with refining calcium hydroxide feed liquid after the thin up modulation again, and the concentration of described refining calcium hydroxide feed liquid is 70g/l.
To 20m
3Reactor in add 12m
3Above-mentioned calcium hydroxide slurry then adds 20 kilograms of trisodium phosphates, and the feeding carbonated is that the kiln gas of 25% (volumetric concentration) carries out carbonization, and the flow control of kiln gas is at 800m
3/ h, the temperature of reaction of whole carbonization process must not be higher than 40 ℃.Carbonic acid gas passes to carbonization to reaction to be finished, and it is stand-by to get homodisperse calcium carbonate slurry, and entire reaction is no more than 3 hours.
With calcium carbonate slurry filter, 150 ℃ of dryings, fragmentation, the beading nano-calcium carbonate.The diameter of product is at 30～50nm, and length-to-diameter ratio is 10～30, and the BET specific surface area is 32m
2/ g.
Embodiment 3
With CaCO
3Content is 96%, MgCO
3After content was 0.7% natural limestone fragmentation, calcining, the hot water that adds 60 ℃ digested, crosses 250 mesh sieves, was mixed with refining calcium hydroxide feed liquid after the thin up modulation again, and the concentration of described refining calcium hydroxide feed liquid is 80g/l.
To 20m
3Reactor in add 14m
3Above-mentioned calcium hydroxide slurry adds 40 kilograms of trisodium phosphates, and the feeding carbonated is that the kiln gas of 40% (volumetric concentration) carries out carbonization, and the flow control of kiln gas is at 800m
3/ h, the temperature of reaction of whole carbonization process must not be higher than 40 ℃.When carbonization when the pH value reaches 8, add and continue carbonization to reaction behind 5 kilograms of sodium laurylsulfonates and finish, homodisperse calcium carbonate slurry is stand-by, entire reaction is no more than 3 hours.
With calcium carbonate slurry filter, 150 ℃ of dryings, fragmentation, the beading nano-calcium carbonate.This product is shown in the transmission electron microscope of Fig. 2, and the diameter of product is at 20～40nm, and length-to-diameter ratio is 10～30, and the BET specific surface area is 45m
2/ g.This good product dispersibility, whiteness height, mobile good, be applicable to the high grade coated paper functional filler.
Embodiment 4
With CaCO
3Content is 96%, MgCO
3After content was 0.7% natural limestone fragmentation, calcining, the hot water that adds 60 ℃ digested, crosses 250 mesh sieves, was mixed with refining calcium hydroxide feed liquid after the thin up modulation again, and the concentration of described refining calcium hydroxide feed liquid is 70g/l.
To 20m
3Reactor in add 12m
3Above-mentioned calcium hydroxide slurry adds 30 kilograms of trisodium phosphates, and the feeding carbonated is that the kiln gas of 40% (volumetric concentration) carries out carbonization, and the flow control of kiln gas is at 700m
3/ h, the temperature of reaction of whole carbonization process must not be higher than 40 ℃.Carbonic acid gas passes to carbonization to reaction to be finished, and it is stand-by to get homodisperse calcium carbonate slurry, and entire reaction is no more than 3 hours.
With calcium carbonate slurry filter, 150 ℃ of dryings, fragmentation, the beading nano-calcium carbonate.The diameter of product is at 20～40nm, and length-to-diameter ratio is 10～30, and the BET specific surface area is 34m
2/ g.
Embodiment 5
According to embodiment 1 preparation calcium carbonate slurry.110 kilograms of stearic acid and 60 kilograms of palmitinic acids added in 85 ℃ of hot water of 200 kilograms, then adding 25 kilograms of sodium hydroxide, to be mixed with modification liquid stand-by.The modification liquid for preparing is added in the calcium carbonate slurry that has been heated to 90 ℃ constant temperature modification 3 hours.After slurries filtration after the modification, 150 ℃ of dryings, the fragmentation the treated carbonates nano bead string.This product is shown in the transmission electron microscope of Fig. 3, and the diameter of product is at 30～50nm, and length-to-diameter ratio is 10～30, and the BET specific surface area is 33m
2/ g.This product is better dispersed, has remarkable toughening effect, is applicable to the plastic material functional filler.
Embodiment 6
According to embodiment 3 preparation calcium carbonate slurries.150 kilograms of stearic acid and 50 kilograms of oleic acid added in 200 kilograms 85 ℃ the hot water, then adding 30 kilograms of sodium hydroxide, to be mixed with modification liquid stand-by.The modification liquid for preparing is added in the calcium carbonate slurry that has been heated to 90 ℃ constant temperature modification 3 hours.After slurries filtration after the modification, 150 ℃ of dryings, the fragmentation the treated carbonates nano bead string.This product is shown in the transmission electron microscope of Fig. 3, and the diameter of product is at 20～40nm, and length-to-diameter ratio is 10～30, and the BET specific surface area is 39m
2/ g.This product is better dispersed, has good reinforcing action, is applicable to the rubber item functional filler.
Claims (3)
1, a kind of industrial production process of calcium carbonate nano bead string is characterized in that it may further comprise the steps:
(1) with weight ratio CaCO
3For: MgCO 85-99%,
3For the hot water that adds 50-90 ℃ after: 0.1-3% natural limestone fragmentation, the calcining is mixed with refining calcium hydroxide feed liquid after digesting, sieving, refining calcium hydroxide feed concentration is 30-120g/l;
(2) will make with extra care calcium hydroxide slurry and send into reactor assembly, feeding the kiln gas flow is 300-900m
3/ h carries out carburizing reagent, 10-50 ℃ of carbonization temperatures, and concentration of carbon dioxide is 10-50% in the kiln gas, carbonization preceding or carbonization initial stage interpolation crystal control agent composition A and composition B, kiln gas passes to reaction to be finished; The ratio of composition A and composition B addition is 0:1～2:1; The total addition of composition A and composition B be in the slurry contained calcium hydroxide quality 0.5～5%;
(3) product that obtains according to the described method of step (2) after filtration, make the beading nano-calcium carbonate after drying and the fragmentation;
(4) an amount of combination C of product heating back adding that obtains according to (2) described method carries out surface treatment, the total addition of composition C be in the feed liquid lime carbonate quality 2-10%, composition C can be mixed with the aqueous solution earlier, the mass ratio of composition C and water is 1:5-1:15, the surface-treated temperature is 60～95 ℃, after surface treatment finishes after filtration, make catenate nm-class active calcium carbonate after drying and the fragmentation.
2, the industrial production process of calcium carbonate nano bead string according to claim 1 is characterized in that composition A is selected from one or more mixture of sodium laurylsulfonate, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, sodium lauryl sulfate, aerosol-OT and sodium dibutyl naphthalene sulfonate; Composition B is selected from one or more mixture of Trisodium Citrate, ammonium citrate, tripoly phosphate sodium STPP, Potassium tripolyphosphate, trisodium phosphate and potassium pyrophosphate.
3, the industrial production process of calcium carbonate nano bead string according to claim 1 is characterized in that composition C is one or more the mixture in stearic acid and sodium hydroxide, palmitinic acid and sodium hydroxide and oleic acid and the sodium hydroxide.
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|---|---|---|---|
| CNA2009100140504A CN101475199A (en) | 2009-01-21 | 2009-01-21 | Industrial preparation of calcium carbonate nano bead string |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701255A (en) * | 2012-06-21 | 2012-10-03 | 石家庄市红日钙业有限公司 | Method for high-concentration carbonization production of spherical nano calcium carbonate |
| CN102732065A (en) * | 2011-04-15 | 2012-10-17 | 池州凯尔特纳米科技有限公司 | Preparation method of PVC special-purpose functional filler superfine active calcium carbonate with low oil absorption |
| CN102757075A (en) * | 2012-05-23 | 2012-10-31 | 湖北工业大学 | Method for preparing calcium carbonate powders of different structures and shapes |
| CN104975348A (en) * | 2015-07-20 | 2015-10-14 | 常州碳酸钙有限公司 | Method for producing nano calcium carboante whiskers based on sodium butylnaphthalene sulfonate and sodium sulfate binary composite crystal form controlling agent |
| CN104975339A (en) * | 2015-07-20 | 2015-10-14 | 常州碳酸钙有限公司 | Method for preparing nano calcium carbonate whiskers by use of binary complex crystal form control agent of sodium salicylate and ammonium nitrate |
| CN105883880A (en) * | 2016-04-07 | 2016-08-24 | 安徽江东科技粉业有限公司 | Preparation method of sheet superfine calcium carbonate for paper coating |
| CN106458624A (en) * | 2014-04-30 | 2017-02-22 | 欧米亚国际集团 | Production of precipitated calcium carbonate |
| CN107555460A (en) * | 2017-09-18 | 2018-01-09 | 广西合山东来化工科技有限公司 | A kind of Nano calcium carbonate dedicated preparation method of rubber tyre |
| CN108178176A (en) * | 2018-01-28 | 2018-06-19 | 宁波普莱斯帝金属制品有限公司 | A kind of preparation method of calcium carbonate dumbbell shaped nano particle composite material |
| CN108328639A (en) * | 2018-01-28 | 2018-07-27 | 宁波普莱斯帝金属制品有限公司 | A kind of preparation method of calcium carbonate bone rod-like nano particle |
| CN108455645A (en) * | 2018-01-28 | 2018-08-28 | 宁波普莱斯帝金属制品有限公司 | A kind of preparation method of calcium carbonate peanut shape nano particle composite material |
| CN111393879A (en) * | 2020-04-20 | 2020-07-10 | 池州市贵兴非矿新材料有限公司 | Light calcium carbonate modification process |
| CN111909539A (en) * | 2020-06-18 | 2020-11-10 | 芜湖卓越纳米新材料股份有限公司 | Industrial preparation method for improving affinity of nano calcium carbonate for adhesive |
| CN112408448A (en) * | 2020-11-27 | 2021-02-26 | 广西合山市华纳新材料科技有限公司 | Preparation method of mulberry fruit-shaped calcite micron calcium carbonate |
| CN113104878A (en) * | 2021-05-10 | 2021-07-13 | 华东理工大学 | Preparation method of light calcium carbonate for cigarette paper |
| CN115181432A (en) * | 2022-08-04 | 2022-10-14 | 安徽省宣城市华纳新材料科技有限公司 | Surface treatment method of nano calcium carbonate for improving thixotropy of filled PVC paste |
| CN116375071A (en) * | 2023-03-30 | 2023-07-04 | 苏州盛耀塑胶新材料有限公司 | Production process of superfine calcium carbonate |
-
2009
- 2009-01-21 CN CNA2009100140504A patent/CN101475199A/en active Pending
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| CN102732065A (en) * | 2011-04-15 | 2012-10-17 | 池州凯尔特纳米科技有限公司 | Preparation method of PVC special-purpose functional filler superfine active calcium carbonate with low oil absorption |
| CN102757075A (en) * | 2012-05-23 | 2012-10-31 | 湖北工业大学 | Method for preparing calcium carbonate powders of different structures and shapes |
| CN102757075B (en) * | 2012-05-23 | 2014-05-07 | 湖北工业大学 | Method for preparing calcium carbonate powders of different structures and shapes |
| CN102701255A (en) * | 2012-06-21 | 2012-10-03 | 石家庄市红日钙业有限公司 | Method for high-concentration carbonization production of spherical nano calcium carbonate |
| CN106458624A (en) * | 2014-04-30 | 2017-02-22 | 欧米亚国际集团 | Production of precipitated calcium carbonate |
| CN104975348A (en) * | 2015-07-20 | 2015-10-14 | 常州碳酸钙有限公司 | Method for producing nano calcium carboante whiskers based on sodium butylnaphthalene sulfonate and sodium sulfate binary composite crystal form controlling agent |
| CN104975339A (en) * | 2015-07-20 | 2015-10-14 | 常州碳酸钙有限公司 | Method for preparing nano calcium carbonate whiskers by use of binary complex crystal form control agent of sodium salicylate and ammonium nitrate |
| CN105883880A (en) * | 2016-04-07 | 2016-08-24 | 安徽江东科技粉业有限公司 | Preparation method of sheet superfine calcium carbonate for paper coating |
| CN107555460A (en) * | 2017-09-18 | 2018-01-09 | 广西合山东来化工科技有限公司 | A kind of Nano calcium carbonate dedicated preparation method of rubber tyre |
| CN108328639A (en) * | 2018-01-28 | 2018-07-27 | 宁波普莱斯帝金属制品有限公司 | A kind of preparation method of calcium carbonate bone rod-like nano particle |
| CN108178176A (en) * | 2018-01-28 | 2018-06-19 | 宁波普莱斯帝金属制品有限公司 | A kind of preparation method of calcium carbonate dumbbell shaped nano particle composite material |
| CN108455645A (en) * | 2018-01-28 | 2018-08-28 | 宁波普莱斯帝金属制品有限公司 | A kind of preparation method of calcium carbonate peanut shape nano particle composite material |
| CN111393879A (en) * | 2020-04-20 | 2020-07-10 | 池州市贵兴非矿新材料有限公司 | Light calcium carbonate modification process |
| CN111909539A (en) * | 2020-06-18 | 2020-11-10 | 芜湖卓越纳米新材料股份有限公司 | Industrial preparation method for improving affinity of nano calcium carbonate for adhesive |
| CN112408448A (en) * | 2020-11-27 | 2021-02-26 | 广西合山市华纳新材料科技有限公司 | Preparation method of mulberry fruit-shaped calcite micron calcium carbonate |
| CN112408448B (en) * | 2020-11-27 | 2023-04-07 | 广西合山市华纳新材料科技有限公司 | Preparation method of mulberry fruit-shaped calcite micron calcium carbonate |
| CN113104878A (en) * | 2021-05-10 | 2021-07-13 | 华东理工大学 | Preparation method of light calcium carbonate for cigarette paper |
| CN115181432A (en) * | 2022-08-04 | 2022-10-14 | 安徽省宣城市华纳新材料科技有限公司 | Surface treatment method of nano calcium carbonate for improving thixotropy of filled PVC paste |
| CN115181432B (en) * | 2022-08-04 | 2023-05-26 | 安徽省宣城市华纳新材料科技有限公司 | Surface treatment method for improving thixotropic property of filled PVC paste by nano calcium carbonate |
| CN116375071A (en) * | 2023-03-30 | 2023-07-04 | 苏州盛耀塑胶新材料有限公司 | Production process of superfine calcium carbonate |
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Open date: 20090708 |