CN101987737A - Method for preparing spectrum pure calcium carbonate - Google Patents
Method for preparing spectrum pure calcium carbonate Download PDFInfo
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- CN101987737A CN101987737A CN2009103052204A CN200910305220A CN101987737A CN 101987737 A CN101987737 A CN 101987737A CN 2009103052204 A CN2009103052204 A CN 2009103052204A CN 200910305220 A CN200910305220 A CN 200910305220A CN 101987737 A CN101987737 A CN 101987737A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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Abstract
The invention belongs to a method for preparing spectrum pure calcium carbonate, which comprises the steps: (1) preparing an ammonium carbonate solution, wherein distilled water is added to a plastic bucket and ammonia is fed into the plastic bucket to prepare ammonia water, and carbon dioxide gas is fed to prepare the ammonium carbonate solution for later use; (2) purifying calcium nitrate, wherein the calcium nitrate is added to the distilled water and heated to 50 to 60 DEG C to be dissolved, the pH value is regulated to 10 to 11 by utilizing calcium hydroxide, the mixture is filtered to prepare the purified calcium nitrate solution for later use; and (3) synthetizing the spectrum pure calcium carbonate, wherein the calcium nitrate solution after being purified in the step (2) is heated to 50 to 60 DEG C; the ammonium carbonate for later use in the step (1) is added under the being stirred; the pH value is controlled between 5 to 6; the solution is filtered; the ammonium carbonate solution is continuously added to the filtered solution until the precipitation is complete; and the precipitation is washed by the distilled water and dried to prepare the spectrum pure calcium carbonate. The method has the advantages of low impurity content, high purity and simple process procedure, and is the preparation method of the spectrum pure calcium carbonate with high production efficiency.
Description
Technical field
The invention belongs to inorganic synthetic field, especially a kind of preparation method of spectroscopically pure lime carbonate.
Background technology
Spectroscopically pure lime carbonate is used widely as a kind of single product silicon section glue, thick film appliance material and spectroscopically pure analytical reagent.The synthetic method of Cai Yonging in the past, calcium chloride and volatile salt effect obtain lime carbonate.Product purity is low, the foreign matter content height, this kind method produce product purity low, the foreign matter content height can only be applied to food Creta Preparata, starter, raising agent etc., can not satisfy the application of doing analytical reagent and synthetic high-end product.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the preparation method of the spectroscopically pure lime carbonate that a kind of foreign matter content is low, purity is high, processing step is simple, production efficiency is higher is provided.
The present invention is achieved through the following technical solutions:
A kind of preparation method of spectroscopically pure lime carbonate is characterized in that: this preparation method's step is:
(1), preparation sal volatile: distilled water is put into plastic tank feeding ammonia make ammoniacal liquor, relative density is controlled at 18～22Be, feeds carbon dioxide gas again, and pH value is controlled at 8～9, and it is standby to obtain sal volatile;
(2), purification nitrocalcite: nitrocalcite is put into distilled water, be heated to 50～60 ℃ of dissolvings, with calcium hydroxide pH value is transferred to 10～11, filter, the ca nitrate soln after obtaining purifying is standby;
(3), the pure lime carbonate of synthetic spectrum: the ca nitrate soln after step (2) purification is heated to 50～60 ℃, follow then to stir and add the standby volatile salt of step (1), pH value is controlled at 5～6, filter, it is complete to precipitation that the solution of continuation after filtering adds sal volatile, with distillation water washing and precipitating, drying, obtain spectroscopically pure lime carbonate.
And the weight ratio of described nitrocalcite and distilled water is 1: 1.
And described drying is to dry earlier, puts into baking oven 220 degree constant temperature again 3 hours.
Advantage of the present invention and beneficial effect are:
1, the preparation method of this spectroscopically pure lime carbonate adopts purification nitrocalcite and the pure lime carbonate of volatile salt synthetic spectrum, and this kind method can access the high lime carbonate of purity, and the preparation method is simple, and cost is lower, and is easy to control.
2, foreign matter content of the present invention is low, purity is high, processing step is simple, be the preparation method of the higher spectroscopically pure lime carbonate of a kind of production efficiency.
Embodiment
The present invention is described in further detail by following examples.Need to prove: following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
Embodiment 1
A kind of preparation method of spectroscopically pure lime carbonate the steps include:
(1), preparation sal volatile: 10Kg distilled water is put into plastic tank feeding ammonia make ammoniacal liquor, relative density is controlled at 18Be, feeds carbon dioxide gas again, and pH value is controlled at 8.5, and it is standby to obtain sal volatile;
(2), purification nitrocalcite: 2Kg nitrocalcite is put into 2000ml distilled water, be heated to 50 ℃ of dissolvings, with calcium hydroxide pH value is transferred to 10, filter, the ca nitrate soln after obtaining purifying is standby;
(3), the pure lime carbonate of synthetic spectrum: the ca nitrate soln after step (2) purification is heated to 50 ℃, follow then to stir and add the standby volatile salt of step (1), pH value is controlled at 5, filter, it is complete to precipitation that the solution of continuation after filtering adds sal volatile, with distillation water washing and precipitating 3 times, drying then, put into baking oven 220 degree constant temperature again 3 hours, obtain spectroscopically pure lime carbonate.
Embodiment 2
A kind of preparation method of spectroscopically pure lime carbonate the steps include:
(1), preparation sal volatile: 10Kg distilled water is put into plastic tank feeding ammonia make ammoniacal liquor, relative density is controlled at 22Be, feeds carbon dioxide gas again, and pH value is controlled at 9, and it is standby to obtain sal volatile;
(2), purification nitrocalcite: 1Kg nitrocalcite is put into 1000ml distilled water, be heated to 60 ℃ of dissolvings, with calcium hydroxide pH value is transferred to 11, filter, the ca nitrate soln after obtaining purifying is standby;
(3), the pure lime carbonate of synthetic spectrum: the ca nitrate soln after step (2) purification is heated to 60 ℃, follow then to stir and add the standby volatile salt of step (1), pH value is controlled at 6, filter, it is complete to precipitation that the solution of continuation after filtering adds sal volatile, with distillation water washing and precipitating 4 times, drying then, put into baking oven 220 degree constant temperature again 3 hours, obtain spectroscopically pure lime carbonate.
Claims (3)
1. the preparation method of a spectroscopically pure lime carbonate, it is characterized in that: this preparation method's step is:
(1), preparation sal volatile: distilled water is put into plastic tank feeding ammonia make ammoniacal liquor, relative density is controlled at 18～22Be, feeds carbon dioxide gas again, and pH value is controlled at 8～9, and it is standby to obtain sal volatile;
(2), purification nitrocalcite: nitrocalcite is put into distilled water, be heated to 50～60 ℃ of dissolvings, with calcium hydroxide pH value is transferred to 10～11, filter, the ca nitrate soln after obtaining purifying is standby;
(3), the pure lime carbonate of synthetic spectrum: the ca nitrate soln after step (2) purification is heated to 50～60 ℃, follow then to stir and add the standby volatile salt of step (1), pH value is controlled at 5～6, filter, it is complete to precipitation that the solution of continuation after filtering adds sal volatile, with distillation water washing and precipitating, drying, obtain spectroscopically pure lime carbonate.
2. the preparation method of spectroscopically pure lime carbonate according to claim 1 is characterized in that: the weight ratio of described nitrocalcite and distilled water is 1: 1.
3. the preparation method of spectroscopically pure lime carbonate according to claim 1 is characterized in that: described drying was put into baking oven 220 degree constant temperature 3 hours again for drying earlier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103052204A CN101987737A (en) | 2009-08-05 | 2009-08-05 | Method for preparing spectrum pure calcium carbonate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103052204A CN101987737A (en) | 2009-08-05 | 2009-08-05 | Method for preparing spectrum pure calcium carbonate |
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| CN101987737A true CN101987737A (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009103052204A Pending CN101987737A (en) | 2009-08-05 | 2009-08-05 | Method for preparing spectrum pure calcium carbonate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531016A (en) * | 2011-12-30 | 2012-07-04 | 湖南省产商品质量监督检验院 | Production method of food-grade calcium hydroxide |
| CN110078107A (en) * | 2019-04-23 | 2019-08-02 | 贵州红星发展股份有限公司 | It is a kind of using quick lime as the Calcium Carbonate Cyclic production method of raw material |
| CN111517783A (en) * | 2020-04-30 | 2020-08-11 | 合肥学院 | Method for preparing calcium carbonate-YSZ composite solid electrolyte by ultrasonic microwave combination method |
-
2009
- 2009-08-05 CN CN2009103052204A patent/CN101987737A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102531016A (en) * | 2011-12-30 | 2012-07-04 | 湖南省产商品质量监督检验院 | Production method of food-grade calcium hydroxide |
| CN110078107A (en) * | 2019-04-23 | 2019-08-02 | 贵州红星发展股份有限公司 | It is a kind of using quick lime as the Calcium Carbonate Cyclic production method of raw material |
| CN111517783A (en) * | 2020-04-30 | 2020-08-11 | 合肥学院 | Method for preparing calcium carbonate-YSZ composite solid electrolyte by ultrasonic microwave combination method |
| CN111517783B (en) * | 2020-04-30 | 2022-04-22 | 合肥学院 | A method for preparing calcium carbonate-YSZ composite solid electrolyte by ultrasonic microwave combination method |
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Application publication date: 20110323 |