CN103159246A - Light calcium carbonate produced by using shells - Google Patents
Light calcium carbonate produced by using shells Download PDFInfo
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- CN103159246A CN103159246A CN2013101272102A CN201310127210A CN103159246A CN 103159246 A CN103159246 A CN 103159246A CN 2013101272102 A CN2013101272102 A CN 2013101272102A CN 201310127210 A CN201310127210 A CN 201310127210A CN 103159246 A CN103159246 A CN 103159246A
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- shell
- calcium carbonate
- light calcium
- shells
- filter
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Abstract
A great variety of mussel shellfishes exist in the coastal region of China, the shellfish breeding industry rapidly develops (the annual output is up to ten million tons), and the shell resource is rich. However, at current, shells are mainly applied to home decoration, handcraft manufacture and feed additive industry, the total utilization ratio is not up to 20%, and a great number of shell resources are not sufficiently utilized. A shell contains calcium carbonate serving as a main component, and if the shell is simply and chemically treated to obtain light calcium carbonate, a new approach is opened up for the comprehensive utilization of the shell, not only can the energy source be saved, but also the environmental friendliness is achieved. A method for producing the light calcium carbonate by utilizing the shells comprises the following main process steps of: alkali washing, acid hydrolysis, filtering, layered separation, secondary acid hydrolysis, reacting, filtering and drying, and the light calcium carbonate is obtained through the process steps. Compared with a heating synthesis method, the method provided by the invention has the advantages that the light calcium carbonate produced by using the method is remarkable in energy-saving effect; and the method provides a powerful basis for the comprehensive utilization of the shells.
Description
Technical field
What the present invention proposed is to utilize shell to produce the method for light calcium carbonate.
Background technology
China's Coastal Areas shell seafood is of a great variety, shell aquaculture development swift and violent (annual production reaches ten million ton), shell aboundresources.Yet, at present the utilization of shell mainly being rested on home decoration, handicraft making and feed interpolation industry, overall utilization is less than 20%, and a large amount of shell resources are not fully utilized.The major ingredient of shell is calcium carbonate, obtains light calcium carbonate if shell can be processed through simple chemical process, undoubtedly a new way, not only save energy but also protection of the environment has been opened up in the comprehensive utilization of shell.
The main technique route that utilizes shell to produce light calcium carbonate is: alkali cleaning, and acidolysis is filtered, multi_layer extraction, the secondary acidolysis, reaction is filtered, and drying can obtain light calcium carbonate through above-mentioned operation.The light calcium carbonate that the method is produced compares that to add the thermal synthesis method energy-saving effect remarkable, and this experimental technique provides strong foundation for the comprehensive utilization of shell.
Summary of the invention
What the present invention proposed is to utilize shell to produce the method for light calcium carbonate, and the method main process is: 1, alkali cleaning, filtration, washing step; 2, hydrolysis procedure; 3, filter progress; 4, multi_layer extraction operation; 5, secondary hydrolysis procedure; 6, reaction process; 7, filtration, drying process.
The scheme that the present invention takes is:
Alkali cleaning, filtration washing step:
Shell is added in beaker, add 3% SPC-D solution, make liquid level surpass shell, soak time is 2 hours, filters, washes.
Hydrolysis procedure:
The bulk shell is broken into pieces put into there-necked flask, drip 36% hydrochloric acid with dropping funnel, shell is wanted excessive 1% left and right.
Filter progress:
Filter with Büchner funnel, unnecessary shell recycles.
The multi_layer extraction operation:
Filtrate is put into separating funnel, standing demix, the calcium chloride water bottom telling.
The secondary hydrolysis procedure:
The bulk shell is broken into pieces put into there-necked flask, drip 12% hydrochloric acid with dropping funnel, produce carbon dioxide.
Reaction process:
Carbon dioxide is passed in above-mentioned calcium chloride water, and reaction generates light calcium carbonate, and this reaction cycle back and forth will reach the purpose of batch production light calcium carbonate.
Filtration, drying process:
Above-mentioned substance filtration, drying are obtained light calcium carbonate.
Description of drawings
Fig. 1 utilizes shell to produce the method process flow chart of light calcium carbonate.
Embodiment
Alkali cleaning, filtration washing step:
1000 gram shells are added in the beaker of 2,500 milliliters, add 3% SPC-D 1,500 ml solns, make liquid level surpass shell, soak time is 2 hours, filters, washing.
Hydrolysis procedure:
500 gram shells are put into 2000 milliliters of there-necked flasks, drip 400 milliliters of 36% hydrochloric acid with dropping funnel, time for adding is 2 hours.
Filter progress:
Filter with Büchner funnel, unnecessary shell recycles.
The multi_layer extraction operation:
Filtrate is put into separating funnel, standing demix, the calcium chloride water bottom telling.
The secondary hydrolysis procedure:
500 gram shells are put into there-necked flask, drip 400 milliliters of 36% hydrochloric acid with dropping funnel, produce carbon dioxide.
Reaction process:
Carbon dioxide is passed in above-mentioned calcium chloride water, and reaction generates light calcium carbonate, and this reaction cycle back and forth will reach the purpose of batch production light calcium carbonate.
Filtration, drying process:
Above-mentioned substance filtration, drying are obtained light calcium carbonate.
Claims (7)
1. alkali cleaning, filtration washing step:
Shell is added in beaker, add 3% SPC-D solution, make the liquid level of liquid surpass shell, soak time is 2 hours, filters, washes.
2. hydrolysis procedure:
The bulk shell is broken into pieces put into there-necked flask, drip 36% hydrochloric acid with dropping funnel, shell is wanted excessive 1% left and right.
3. filter progress:
Filter with Büchner funnel, unnecessary shell recycles.
4. multi_layer extraction operation:
Filtrate is put into separating funnel, standing demix, the calcium chloride water bottom telling.
5. secondary hydrolysis procedure:
The bulk shell is broken into pieces put into another there-necked flask, drip 36% hydrochloric acid with dropping funnel, produce carbon dioxide.
6. reaction process:
Carbon dioxide is passed in above-mentioned calcium chloride water, and reaction generates light calcium carbonate, and this reaction cycle back and forth will reach the purpose of batch production light calcium carbonate.
7. filter, drying process:
Above-mentioned substance filtration, drying are obtained light calcium carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127210.2A CN103159246B (en) | 2013-04-15 | 2013-04-15 | Shell is utilized to produce precipitated calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310127210.2A CN103159246B (en) | 2013-04-15 | 2013-04-15 | Shell is utilized to produce precipitated calcium carbonate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103159246A true CN103159246A (en) | 2013-06-19 |
| CN103159246B CN103159246B (en) | 2016-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310127210.2A Expired - Fee Related CN103159246B (en) | 2013-04-15 | 2013-04-15 | Shell is utilized to produce precipitated calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103159246B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446185A (en) * | 2013-08-29 | 2013-12-18 | 北海市源龙珍珠有限公司 | Method for preparing soluble pearl calcium by use of pearl shells |
| CN107709241A (en) * | 2015-05-28 | 2018-02-16 | 汉田大学产学协力机构 | The method of trickle fragment and the material using the trickle fragment manufacture of shell are manufactured using shell |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS649811A (en) * | 1987-07-01 | 1989-01-13 | Masanobu Makise | Production of salt-free calcium chloride |
| EP1179506A2 (en) * | 2000-08-09 | 2002-02-13 | Jealsa Rianxeira, S.A. | Procedure for industrial use of mussel shells |
| CN102604433A (en) * | 2012-02-14 | 2012-07-25 | 浙江大学 | Preparation method of aldehyde modified shell micro powder |
| CN102773140A (en) * | 2011-05-09 | 2012-11-14 | 王志平 | Manufacturing method for ultrafine shell powder |
-
2013
- 2013-04-15 CN CN201310127210.2A patent/CN103159246B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS649811A (en) * | 1987-07-01 | 1989-01-13 | Masanobu Makise | Production of salt-free calcium chloride |
| EP1179506A2 (en) * | 2000-08-09 | 2002-02-13 | Jealsa Rianxeira, S.A. | Procedure for industrial use of mussel shells |
| CN102773140A (en) * | 2011-05-09 | 2012-11-14 | 王志平 | Manufacturing method for ultrafine shell powder |
| CN102604433A (en) * | 2012-02-14 | 2012-07-25 | 浙江大学 | Preparation method of aldehyde modified shell micro powder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103446185A (en) * | 2013-08-29 | 2013-12-18 | 北海市源龙珍珠有限公司 | Method for preparing soluble pearl calcium by use of pearl shells |
| CN107709241A (en) * | 2015-05-28 | 2018-02-16 | 汉田大学产学协力机构 | The method of trickle fragment and the material using the trickle fragment manufacture of shell are manufactured using shell |
| US20180148343A1 (en) * | 2015-05-28 | 2018-05-31 | Hanbat National University Industry-Acdemic Cooperatioon Foundation | Method for producing microplates from shells, and material produced by using the microplates |
| CN110467211A (en) * | 2015-05-28 | 2019-11-19 | 汉田大学产学协力机构 | The method of subtle fragment is manufactured using shell and utilizes the material of the subtle fragment manufacture of shell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103159246B (en) | 2016-08-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160810 Termination date: 20180415 |