CN107445187A - A kind of preparation method of oyster shell whiting modified calcium carbonate - Google Patents
A kind of preparation method of oyster shell whiting modified calcium carbonate Download PDFInfo
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- CN107445187A CN107445187A CN201710499629.9A CN201710499629A CN107445187A CN 107445187 A CN107445187 A CN 107445187A CN 201710499629 A CN201710499629 A CN 201710499629A CN 107445187 A CN107445187 A CN 107445187A
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- oyster shell
- shell whiting
- calcium carbonate
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/185—After-treatment, e.g. grinding, purification, conversion of crystal morphology
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Abstract
The invention discloses a kind of preparation method of oyster shell whiting modified calcium carbonate, calcium carbonate is modified from oyster shell whiting, the anti-microbial property of oyster shell whiting is mainly utilized, in order to reduce cost, oyster shell whiting is processed into 2 10 μm of little particle, it is molten altogether with calcium carbonate again, in whipping process, oyster shell whiting is adsorbed in calcium carbonate surface, calcium carbonate is possessed extraordinary antibacterial effect, and solute effect of the modified calcium carbonate in water after handling might as well be a lot, not free settling.
Description
Technical field
The present invention relates to calcium carbonate technical field, more particularly to a kind of preparation method of oyster shell whiting modified calcium carbonate.
Background technology
Calcium carbonate is a kind of inorganic compound, is commonly called as：Lime stone, lime stone, stone flour, marble etc..Main component：Fang Xie
Stone, chemical formula are CaCO3, in neutrality, it is substantially insoluble in, is dissolved in hydrochloric acid.It is Common materials on the earth, is present in graupel
Also it is the main component of animal skeleton or shell in the rocks such as stone, calcite, chalk, limestone, marble, calcareous tufa.Carbonic acid
Calcium is important construction material, and industrial purposes is very wide.Calcium carbonate is to combine generation by calcium ion and carbanion, so
It is both calcium salt and carbonate.
According to the difference of calcium carbonate production method, calcium carbonate can be divided into powdered whiting, precipitated calcium carbonate, colloidal-carbon
Sour calcium and crystal calcium carbonate.
Powdered whiting is mechanically（Ground with Raymond mill or other high pressures）Directly crush natural calcite, lime
The cans such as stone, chalk, shell are made.Because the settling volume of the sedimentation volume ratio precipitated calcium carbonate of powdered whiting is small, institute
To be referred to as powdered whiting.Property：White powder.It is odorless, tasteless.Dew is empty unchanged in gas, proportion 2.710.Fusing point
1339℃.It is practically insoluble in water to dissolve in the water containing ammonium salt or di-iron trioxide, insoluble in alcohol.Meet spirit of vinegar, watery hydrochloric acid,
Intumescence occurs for dust technology, and dissolves.Heat resolve is calcium oxide (CaO) and carbon dioxide (CO2)。
Precipitated calcium carbonate is also known as winnofil, abbreviation fine particle calcium carbonate, is that the raw materials such as lime stone are calcined into generation lime（Mainly into
It is divided into calcium oxide）And carbon dioxide, add water digestion lime generation milk of lime（Main component is calcium hydroxide）, then it is passed through again
Carbon dioxide carbonization milk of lime generation precipitation of calcium carbonate, most afterwards through dehydration, dry and crush and be made.
Gel calcium carbonate is also known as modified calcium carbonate, is surface-treated calcium carbonate, calcene or calcene, calcium referred to as living,
It is to carry out surface modification to precipitated calcium carbonate or coarse whiting calcium carbonate with surface modifier and be made.Due to surface-modified dose of modification
Calcium carbonate afterwards typically all has strengthening action, i.e., so-called " activity ", so modified calcium carbonate is traditionally referred to as activity
Calcium carbonate.
Calcium hydroxide and hydrochloric acid reaction are generated calcium chloride by crystal calcium carbonate system, and calcium chloride produces after being carbonized with carbon dioxide
After calcium carbonate, then crystallized, separation, washing, dehydration, drying, screening, crystalline calcium carbonate finished product is obtained.
Calcium carbonate is that the extremely wide precious resources lime stone of purposes is trade name of the limestone as raw mineral materials.Limestone
On history of human civilization, wide, the characteristics of being easily obtained is distributed in nature with it and is widely used.As important building
Material has long production history, and in modern industry, lime stone is manufacture cement, lime, the primary raw material of calcium carbide, is smelting
Indispensable flux limestone in metal working industry, fat lime stone after superfine grinding, be widely used in papermaking, rubber, paint,
In the manufacture of the products such as coating, medicine, cosmetics, feed, sealing, bonding, polishing.According to incompletely statistics, manufacture of cement consumes
Lime stone and building stone, lime production, flux for metallurgy, the ratio between summation of calcium carbonate superfine powder consumption lime stone is 1: 3.Lime
Rock is non-renewable resources, and with the continuous progress of science and technology and the development of nanometer technology, the application field of lime stone will also
Further widen.
The single property of traditional calcium carbonate, with the continuous expansion in calcium carbonate applications field, the requirement to its performance
More and more higher, the present invention provide a kind of preparation method of the modified calcium carbonate with anti-microbial property.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of preparation method of oyster shell whiting modified calcium carbonate.
Oyster shell whiting is oyster shell whiting pulverized powder, and its 95% main component is calcium carbonate, also a small amount of amino acid and polysaccharide material
Matter.The high-grade material of food, cosmetics and interior decoration can be done, it is widely applicable to animal and fowl fodder and the addition of food calcium source
Agent, ornaments processing, drier etc..
Oyster shell whiting biology coating is house ornamentation interior wall coating emerging in recent years, is one of new application of oyster shell whiting, natural ring
Guarantor is its most important advantage.Its key property following points：
First, adsorption-decomposition function formaldehyde
Because the main component of oyster shell whiting is the calcified material such as calcium carbonate, calcium containing small amounts, calcium hydroxide, itself is again to be porous
Fibrous double helix structure, so there is the effect of really absorption, decomposing formaldehyde, while also can be by harmful gas in air
Body is such as：Benzene, TVOC, ammonia etc. are effectively removed.
2nd, air is purified
1st, the oyster shell whiting subparticle by bioactivation technical finesse constructs for porous fibrous double helix construction, can effectively go
Except harmful substances such as the free formaldehyde in air, benzene, ammonia and because of peculiar smell caused by pet, smoking, rubbish, Interior Space is purified
Gas.
2nd, the loose structure of oyster shell whiting is advantageous to that the interior wall ecological wall material with photocatalyst characteristic is made.
3rd, the maximum active factors remained in shell of the oyster shell whiting by bioactivation technical finesse, instead of tradition
The effect of photocatalyst.
3rd, odor eliminating function
The compound of calcium is used for eliminating smell agent in life, thus oyster shell whiting can to indoor smoke, infant, patient, pet,
The smell and indoor miscellaneous taste that mould is distributed all have the effective effect of dispelling, the oxidation especially distributed indoors to cigarette
Carbon and dust Capacity have suction-operated.
4th, antibacterial, bacteriostasis
Oyster shell whiting film by bioactivation technical finesse has extremely strong antibacterial and bactericidal action to Escherichia coli, in addition to sramana
Salmonella, yellow glucose fungus also have notable effect.Not only there is high performance antibiotic property, and with anti-corrosion, the function of anti-tick.
5th, antistatic performance
Oyster shell whiting biology coating using the natural many fine structures duct shell Jing Guo bioactivation technical finesse as raw material, its into
It is calcium to divide 100%, therefore has good antistatic performance.
6th, unique " aquatic respiration " function of adjusting air humidity
Oyster shell whiting itself by bioactivation technical finesse is high intensity, porous structure, so have good aquatic respiration function,
Metope does not condense under low pressure, high- humility state, and in the case of drying, the moisture stored within the walls can slowly be released
Put.Therefore its respiratory function is the conditioning agent of indoor humidity, the generation of condensation and microorganism is prevented, so being described as " to exhale
The coating of suction ".
7th, fire protection flame retarding.
Oyster shell whiting biology coating is made up of inorganic material, therefore is not burnt, even if fire occurs, oyster shell whiting simply occurs
Molten condition, any harmful gas fume etc. will not be produced.
8th, light pollution preventive
Oyster shell whiting is mixed colours from inorganic mineral pigments, and color is soft.When people is lived in the room of coating oyster shell whiting, metope is anti-
It is naturally soft to penetrate light, people does not allow to be also easy to produce visual fatigue, effectively protects the eyesight of you and household, especially to protecting children's vision
Significant effect.Oyster shell whiting wall color is lasting simultaneously, colour-fast using high temperature dye technology, and metope is for a long time as newly, added wall
In the life-span in face, wall decoration number is reduced, has saved room cost.
A kind of preparation method of oyster shell whiting modified calcium carbonate, comprises the following steps：
A, shell is crushed and is ground to below particle diameter 3mm, obtain oyster shell whiting；
B, by oyster shell whiting under the conditions of 710-725 DEG C, it is calcined 24-36h；
C, dispersant and water are added in oyster shell whiting, further grinds, dry, sieving, extracting screen underflow enters the next step, sieves
Upper thing continues to grind；
D, oyster shell whiting is added to the water and be total to micron-sized calcium carbonate powder in molten and water, 800-1500rpm stirrings 20-40min；
E, press filtration, filter cake is dried, you can.
Preferably, in described step C, dispersant is Sodium Polyacrylate.
Preferably, the addition of described Sodium Polyacrylate is the 1-3% of water, and oyster shell whiting is the 10-40% of water.
Preferably, in described step C, the mesh sieve of 1250 mesh -6000 is crossed.
Preferably, in described step D, the particle diameter of calcium carbonate powder is 50-500 μm.
Preferably, in described step D, the mass ratio of described micron order calcium carbonate and oyster shell whiting is（50-120）：1.
It is further preferred that in described step D, the particle diameter ratio of calcium carbonate powder and oyster shell whiting is（20-50）：1.
The pore opening and the porosity of oyster shell whiting are controlled, correlated response formula when oyster shell whiting is calcined is following, and (oxygen is sufficient
Under the conditions of)：
Organic matter=H2O+ carbohydrate+CO2(700 DEG C of ＞)；
CaCO3=CaO+CO2(900 DEG C of ＞).
By test, in of the invention, the stomata of oyster shell whiting is smaller, is more advantageous to the table that oyster shell whiting is attached to powdered whiting
Face, the antibacterial effect of manufactured modified calcium carbonate is also better, in order to form as far as possible small and more stomata on oyster shell whiting surface, this
Invention finds that design reaction temperature is preferred at 710-725 DEG C by experiment, and the reaction time is preferably controlled in 24-36h.
Beneficial effects of the present invention：
Beneficial effects of the present invention are compared with prior art：The present invention is modified from oyster shell whiting to calcium carbonate, mainly
Using the anti-microbial property of oyster shell whiting, but it is completely higher using oyster shell whiting substitution calcium carbonate cost, and in order to reduce in the present invention
Cost, oyster shell whiting is processed into 2-10 μm of little particle, then it is molten altogether with calcium carbonate, in whipping process, oyster shell whiting is adsorbed in carbonic acid
Calcium surface, calcium carbonate is set to possess extraordinary antibacterial effect, and solute effect of the modified calcium carbonate after processing in water
Get well a lot, not free settling.
Embodiment
Embodiment 1
A kind of preparation method of oyster shell whiting modified calcium carbonate, comprises the following steps：
A, shell is crushed and is ground to below particle diameter 3mm, obtain oyster shell whiting；
B, by oyster shell whiting under the conditions of 715 DEG C, it is calcined 30h；
C, dispersant and water are added in oyster shell whiting, further grinds, dry, sieving, extracting screen underflow enters the next step, sieves
Upper thing continues to grind；
D, oyster shell whiting is added to the water and be total to micron-sized calcium carbonate powder in molten and water, 1200rpm stirrings 35min；
E, press filtration, filter cake is dried, you can.
In described step C, dispersant is Sodium Polyacrylate.
The addition of described Sodium Polyacrylate is the 2% of water, and oyster shell whiting is the 15% of water.
In described step C, 2500 mesh sieves are crossed.
In described step D, the particle diameter of calcium carbonate powder is 100-200 μm.
In described step D, the mass ratio of described micron order calcium carbonate and oyster shell whiting is 80：1.
Embodiment 2
A kind of preparation method of oyster shell whiting modified calcium carbonate, comprises the following steps：
A, shell is crushed and is ground to below particle diameter 3mm, obtain oyster shell whiting；
B, by oyster shell whiting under the conditions of 710 DEG C, it is calcined 36h；
C, dispersant and water are added in oyster shell whiting, further grinds, dry, sieving, extracting screen underflow enters the next step, sieves
Upper thing continues to grind；
D, oyster shell whiting is added to the water and be total to micron-sized calcium carbonate powder in molten and water, 800rpm stirrings 40min；
E, press filtration, filter cake is dried, you can.
In described step C, dispersant is Sodium Polyacrylate.
The addition of described Sodium Polyacrylate is the 1% of water, and oyster shell whiting is the 10% of water.
In described step C, 1250 mesh sieves are crossed.
In described step D, the particle diameter of calcium carbonate powder is 350-500 μm.
In described step D, the mass ratio of described micron order calcium carbonate and oyster shell whiting is 120：1.
Embodiment 3
A kind of preparation method of oyster shell whiting modified calcium carbonate, comprises the following steps：
A, shell is crushed and is ground to below particle diameter 3mm, obtain oyster shell whiting；
B, by oyster shell whiting under the conditions of 725 DEG C, it is calcined 24h；
C, dispersant and water are added in oyster shell whiting, further grinds, dry, sieving, extracting screen underflow enters the next step, sieves
Upper thing continues to grind；
D, oyster shell whiting is added to the water and be total to micron-sized calcium carbonate powder in molten and water, 1500rpm stirrings 20min；
E, press filtration, filter cake is dried, you can.
In described step C, dispersant is Sodium Polyacrylate.
The addition of described Sodium Polyacrylate is the 3% of water, and oyster shell whiting is the 40% of water.
In described step C, 6000 mesh sieves are crossed.
In described step D, the particle diameter of calcium carbonate powder is 50-100 μm.
In described step D, the mass ratio of described micron order calcium carbonate and oyster shell whiting is 50：1.
Comparative example 1
Sieve in step C in embodiment 1 is set to 2500 mesh, the particle diameter of calcium carbonate powder in set-up procedure D, remaining condition is not
Become, the size of both particle diameters of research and the modified calcium carbonate anti-microbial property finally obtained（The bacteriostasis rate of Escherichia coli）Relation.
By data above it is recognised that in the anti-microbial property and preparation process of modified calcium carbonate prepared by the present invention, shell
Particle diameter ratio between powder and calcium carbonate powder has direct relation.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and modification can also be made, these improvement and modification
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of preparation method of oyster shell whiting modified calcium carbonate, it is characterised in that comprise the following steps：
A, shell is crushed and is ground to below particle diameter 3mm, obtain oyster shell whiting；
B, by oyster shell whiting under the conditions of 710-725 DEG C, it is calcined 24-36h；
C, dispersant and water are added in oyster shell whiting, further grinds, dry, sieving, extracting screen underflow enters the next step, sieves
Upper thing continues to grind；
D, oyster shell whiting is added to the water and be total to micron-sized calcium carbonate powder in molten and water, 800-1500rpm stirrings 20-40min；
E, press filtration, filter cake is dried, you can.
2. the preparation method of oyster shell whiting modified calcium carbonate as claimed in claim 1, it is characterised in that in described step C, point
Powder is Sodium Polyacrylate.
3. the preparation method of oyster shell whiting modified calcium carbonate as claimed in claim 2, it is characterised in that described Sodium Polyacrylate
Addition be water 1-3%, oyster shell whiting be water 10-40%.
4. the preparation method of oyster shell whiting modified calcium carbonate as claimed in claim 1, it is characterised in that in described step C, mistake
The mesh sieve of 1250 mesh -6000.
5. the preparation method of oyster shell whiting modified calcium carbonate as claimed in claim 1, it is characterised in that in described step D, carbon
The particle diameter of sour calcium powder is 50-500 μm.
6. the preparation method of oyster shell whiting modified calcium carbonate as claimed in claim 4, it is characterised in that in described step D, institute
The micron order calcium carbonate and the mass ratio of oyster shell whiting stated is（50-120）：1.
7. the preparation method of oyster shell whiting modified calcium carbonate as claimed in claim 4, it is characterised in that in described step D, carbon
The particle diameter ratio of sour calcium powder and oyster shell whiting is（20-50）：1.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107970876A (en) * | 2017-12-15 | 2018-05-01 | 浙江海洋大学 | A kind of preparation method that oyster shell whiting is modified with stearic acid |
| CN108452664A (en) * | 2018-01-30 | 2018-08-28 | 广东汇雄实业投资有限公司 | A kind of anion super fine calcium carbonate powder and its manufacture craft |
| CN108743412A (en) * | 2018-05-10 | 2018-11-06 | 桂林永福恒达实业有限公司 | A kind of preparation method of micro mist calcium carbonate suitable for toothpaste production |
| CN109251000A (en) * | 2018-11-19 | 2019-01-22 | 黎金莲 | Type parian wall covering is built in a kind of light steel house spray |
| CN111302374A (en) * | 2020-03-20 | 2020-06-19 | 惠州荣联华橡塑有限公司 | Preparation method of active superfine calcium carbonate powder |
| CN112480715A (en) * | 2020-12-08 | 2021-03-12 | 深圳市锦昊辉实业发展有限公司 | Modified heavy calcium carbonate and preparation method and application thereof |
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| CN105038322A (en) * | 2015-07-02 | 2015-11-11 | 池州青阳县龙酉钙业有限公司 | Modified calcium carbonate for automobile plastic and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107970876A (en) * | 2017-12-15 | 2018-05-01 | 浙江海洋大学 | A kind of preparation method that oyster shell whiting is modified with stearic acid |
| CN108452664A (en) * | 2018-01-30 | 2018-08-28 | 广东汇雄实业投资有限公司 | A kind of anion super fine calcium carbonate powder and its manufacture craft |
| CN108743412A (en) * | 2018-05-10 | 2018-11-06 | 桂林永福恒达实业有限公司 | A kind of preparation method of micro mist calcium carbonate suitable for toothpaste production |
| CN109251000A (en) * | 2018-11-19 | 2019-01-22 | 黎金莲 | Type parian wall covering is built in a kind of light steel house spray |
| CN111302374A (en) * | 2020-03-20 | 2020-06-19 | 惠州荣联华橡塑有限公司 | Preparation method of active superfine calcium carbonate powder |
| CN112480715A (en) * | 2020-12-08 | 2021-03-12 | 深圳市锦昊辉实业发展有限公司 | Modified heavy calcium carbonate and preparation method and application thereof |
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