CN104927398A - Preparation method of active light calcium carbonate - Google Patents
Preparation method of active light calcium carbonate Download PDFInfo
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- CN104927398A CN104927398A CN201410256730.8A CN201410256730A CN104927398A CN 104927398 A CN104927398 A CN 104927398A CN 201410256730 A CN201410256730 A CN 201410256730A CN 104927398 A CN104927398 A CN 104927398A
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- calcium carbonate
- light calcium
- preparation
- lime
- calcene
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Abstract
The invention discloses a preparation method of active light calcium carbonate. According to the invention, limestone is crushed and calcined, such that lime is prepared; lime is refined, and a calcium hydroxide solution with a concentration of 15-20% is prepared; with a carbonation method, light calcium carbonate is prepared; and wet modification is carried out, such that the active light calcium carbonate is obtained. According to the invention, the light calcium carbonate prepared with the carbonation method is modified with an added modification agent and with a wet method. The operation process is simple; cost is low; and the obtained finished product has a small particle size. With an aluminum-titanium composite coupling agent, the interaction with inorganics and organics is increased, such that a good interface layer can be formed between light calcium carbonate and a resin product, and a final product is provided with good dispersion property and good mechanical properties.
Description
Technical field
The present invention relates to a kind of preparation method of calcium carbonate, particularly relate to a kind of preparation method of calcene.
Background technology
Calcium carbonate is a kind of mineral filler be most widely used in polymer composite, in rubber, plastic working, add appropriate mineral filler, can improve the performances such as the rigidity of goods, wear resistance, hardness, thermotolerance, dimensional stabilizing.But mineral filler has the surface property of hydrophilic oleophobic, the polarity difference of macromolecular material and filler is large, affinity is poor, when calcium carbonate is used as to add in the product such as rubber, plastics in mineral filler, the performance index of the product such as rubber, plastics may be caused not up to standard, therefore the necessary calcium carbonate developed for mineral filler aspect.
Summary of the invention
Technical problem to be solved by this invention is: the preparation method providing a kind of calcene, and calcene particle diameter prepared by the method is little, good dispersity, and preparation process is not long, and cost is low.
In order to solve the problem, technical scheme of the present invention is a kind of preparation method of calcene, and its preparation process is as follows:
1) granularity is become by limestone crushing to be 80 ~ 120mm, Wingdale after fragmentation is sent into calcining kiln and carries out calcination processing, and pass into air in calcining kiln, finally obtain lime, reacted kiln gas is collected calcining temperature 800 ~ 1100 DEG C, calcination time 2h simultaneously;
2) lime that above-mentioned steps obtains is made refined lime;
3) select above-mentioned steps to obtain refined lime to be added to the water, make the aqua calcis that concentration is 15% ~ 20%;
4) by step 1) in the kiln gas that obtains send into fly-ash separator and process, then be passed into step 3) in aqua calcis in, through washing drying treatment, prepare light calcium carbonate;
5) by water-soluble for the light calcium carbonate obtained in step, make the solution that concentration is 20% ~ 30%, and add the composite coupler of 1% ~ 3% Solute mass in solution, after stirring 20 ~ 30min, washing is dry;
6) by step 5) in the dried powder of washing send in calcining case and toast, pulverize after cooling.
Further, described step 2) in lime adopt Method of Soda salt refining technology to obtain.
Further, described step 4) fineness of light calcium carbonate that obtains is 5000 ~ 6000 orders.
Further, described step 4) and step 5) between be provided with iron removal, by step 4) in the light calcium carbonate that obtains through tramp iron separator process.
Further, described step 5) in composite coupler be aluminium titanium composite coupler.
Beneficial effect of the present invention: carborization obtains light calcium carbonate and carries out modification at employing wet method interpolation properties-correcting agent, operating process is simple, cost is low, the finished product grain size obtained is little, utilize aluminium titanium composite coupler to add and inorganics and organic interaction simultaneously, can make to form good interfacial layer between light calcium carbonate and resene product, make the good dispersity of final product, good mechanical property.
Embodiment
Embodiment 1
Granularity is become by limestone crushing to be 80 ~ 120mm, Wingdale after fragmentation is sent into calcining kiln and carries out calcination processing, and in calcining kiln, pass into air, finally obtain lime, reacted kiln gas is collected calcining temperature 800 ~ 1100 DEG C simultaneously, calcination time 2h, to obtain lime above adopts Method of Soda salt refining technology to make refined lime, and make the aqua calcis that concentration is 15%, and pass into the kiln gas (kiln gas here is first sent into fly-ash separator and processed) obtained in calcining kiln, finally by washing drying treatment, prepare light calcium carbonate (fineness of light calcium carbonate is 5000 ~ 6000 orders), by the light calcium carbonate that obtains through tramp iron separator process, removing iron wherein, by water-soluble for the light calcium carbonate obtained, make the solution that concentration is 20%%, and in solution, add the aluminium titanium composite coupler of 1% Solute mass, after stirring 20min, washing is dry, to wash in dried powder feeding calcining case and toast, storing temperature is 200 ~ 220 DEG C, prevent that temperature is too high causes Decomposition of Calcium Carbonate, pulverize after cooling.
Embodiment 2
Granularity is become by limestone crushing to be 80 ~ 120mm, Wingdale after fragmentation is sent into calcining kiln and carries out calcination processing, and in calcining kiln, pass into air, finally obtain lime, reacted kiln gas is collected calcining temperature 800 ~ 1100 DEG C simultaneously, calcination time 2h, to obtain lime above adopts Method of Soda salt refining technology to make refined lime, and make the aqua calcis that concentration is 18%, and pass into the kiln gas (kiln gas here is first sent into fly-ash separator and processed) obtained in calcining kiln, finally by washing drying treatment, prepare light calcium carbonate (fineness of light calcium carbonate is 5000 ~ 6000 orders), by the light calcium carbonate that obtains through tramp iron separator process, removing iron wherein, by water-soluble for the light calcium carbonate obtained, make the solution that concentration is 25%, and in solution, add the aluminium titanium composite coupler of 2% Solute mass, after stirring 25min, washing is dry, to wash in dried powder feeding calcining case and toast, storing temperature is 200 ~ 220 DEG C, prevent that temperature is too high causes Decomposition of Calcium Carbonate, pulverize after cooling.
Embodiment 3
Granularity is become by limestone crushing to be 80 ~ 120mm, Wingdale after fragmentation is sent into calcining kiln and carries out calcination processing, and in calcining kiln, pass into air, finally obtain lime, reacted kiln gas is collected calcining temperature 800 ~ 1100 DEG C simultaneously, calcination time 2h, to obtain lime above adopts Method of Soda salt refining technology to make refined lime, and make the aqua calcis that concentration is 20%, and pass into the kiln gas (kiln gas here is first sent into fly-ash separator and processed) obtained in calcining kiln, finally by washing drying treatment, prepare light calcium carbonate (fineness of light calcium carbonate is 5000 ~ 6000 orders), by the light calcium carbonate that obtains through tramp iron separator process, removing iron wherein, by water-soluble for the light calcium carbonate obtained, make the solution that concentration is 30%, and in solution, add the aluminium titanium composite coupler of 3% Solute mass, after stirring 30min, washing is dry, to wash in dried powder feeding calcining case and toast, storing temperature is 200 ~ 220 DEG C, prevent that temperature is too high causes Decomposition of Calcium Carbonate, pulverize after cooling.
Above three embodiments of the present invention have been described in detail, but described content being only the preferred embodiment of the invention, the practical range for limiting the invention can not being considered to.All equalizations done according to the invention application range change and improve, and still all should belong to patent covering scope of the present invention.
Claims (5)
1. a preparation method for calcene, is characterized in that, its preparation process is as follows:
1) granularity is become by limestone crushing to be 80 ~ 120mm, Wingdale after fragmentation is sent into calcining kiln and carries out calcination processing, and pass into air in calcining kiln, finally obtain lime, reacted kiln gas is collected calcining temperature 800 ~ 1100 DEG C, calcination time 2h simultaneously;
2) lime that above-mentioned steps obtains is made refined lime;
3) select above-mentioned steps to obtain refined lime to be added to the water, make the aqua calcis that concentration is 15% ~ 20%;
4) by step 1) in the kiln gas that obtains send into fly-ash separator and process, then be passed into step 3) in aqua calcis in, through washing drying treatment, prepare light calcium carbonate;
5) by water-soluble for the light calcium carbonate obtained in step, make the solution that concentration is 20% ~ 30%, and add the composite coupler of 1% ~ 3% Solute mass in solution, after stirring 20 ~ 30min, washing is dry;
6) by step 5) in the dried powder of washing send in calcining case and toast, pulverize after cooling.
2. the preparation method of calcene according to claim 1, is characterized in that, described step 2) in lime adopt Method of Soda salt refining technology to obtain.
3. the preparation method of calcene according to claim 2, is characterized in that, described step 4) fineness of light calcium carbonate that obtains is 5000 ~ 6000 orders.
4. the preparation method of calcene according to claim 3, is characterized in that, described step 4) and step 5) between be provided with iron removal, by step 4) in the light calcium carbonate that obtains through tramp iron separator process.
5. the preparation method of calcene according to claim 4, is characterized in that, described step 5) in composite coupler be aluminium titanium composite coupler.
Priority Applications (1)
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| CN201410256730.8A CN104927398A (en) | 2014-06-10 | 2014-06-10 | Preparation method of active light calcium carbonate |
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| CN201410256730.8A CN104927398A (en) | 2014-06-10 | 2014-06-10 | Preparation method of active light calcium carbonate |
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| CN104927398A true CN104927398A (en) | 2015-09-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107434855A (en) * | 2017-08-10 | 2017-12-05 | 青阳县永诚钙业有限责任公司 | A kind of preparation method of activated Calcium carbonate |
| CN109134931A (en) * | 2018-07-27 | 2019-01-04 | 常州大学 | A kind of synthesis of aluminium titanium composite coupler and its preparation and application method of functional modification carbosphere material |
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Application publication date: 20150923 |