CN101037215A - Preparation process of light calcium carbonate serosity - Google Patents
Preparation process of light calcium carbonate serosity Download PDFInfo
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- CN101037215A CN101037215A CN 200710038419 CN200710038419A CN101037215A CN 101037215 A CN101037215 A CN 101037215A CN 200710038419 CN200710038419 CN 200710038419 CN 200710038419 A CN200710038419 A CN 200710038419A CN 101037215 A CN101037215 A CN 101037215A
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- calcium carbonate
- preparation process
- polyphosphate
- solid content
- filter cake
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
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Abstract
The present invention provides a preparation technology of light calcium carbonate slurry, which comprises the steps of that: (1)the Ca(OH)2 solution is obtained by slaking lime, and is sieved by sieve with 160~320 meshes to obtain Ca(OH)2 fine slurry which is diluted to a concentration of 100~150 g/l; (2)the Ca(OH)2 fine slurry obtained from step (1)is injected into a carburizing reaction kettle, and white granulated sugar having Ca(OH)2 with a solid content of 0.01~1% is injected into the carburizing reaction kettle; (3)a mix gas of carbon dioxide and air, which has a temperature of 10~20 DEG C, a carbon dioxide volume concentration of 15~35% and a carbon dioxide flow quantity of 200~500ml/min, is passes into the carburizing reaction kettle; (4)the slurry after carburizing is pressing filtered to obtain the calcium carbonate filter cake; (5)the calcium carbonate filter cake is subjected a high shear force treatment method, at the same time, polyphosphate is added therein to obtain a calcium carbonate slurry having a solid content of 40~65%, wherein the dosage of polyphosphate is 0~5 % of the content of calcium carbonate. The calcium carbonate slurry of the present invention has a high concentrate and can be stored for a long term.
Description
Technical field
The present invention proposes a kind of new technology for preparing light calcium carbonate serosity, a kind of preparation process of light calcium carbonate serosity that refers in particular to the energy prolonged preservation and have high concentration.
Background technology
At present, domestic in order to produce light calcium carbonate serosity with higher concentration.Often adopt first drying to obtain lime carbonate dry powder, be dissolved in the mode in the water again.Thereby caused complex process, cost improves, the problem that output minimizing etc. makes producer relatively have a headache.For addressing the above problem the present invention a kind of new technical scheme is proposed.
Summary of the invention
The object of the present invention is to provide a kind of new preparation technology of calcium carbonate serosity, this technology can be with simple technology, and cheap cost is prepared has high concentration, the calcium carbonate serosity of energy prolonged preservation.
The present invention is achieved through the following technical solutions: a kind of preparation process of light calcium carbonate serosity wherein, makes Ca (OH) by sieving
2Refining adds white sugar in carbonization process, add polyphosphate in high shear treatment, in turn includes the following steps:
(1) calcined limestone generates calcium oxide, and calcium oxide is sent into material feeder, is digested to Ca (OH)
2Solution gets Ca (OH) after the sub-sieving separating of 160～320 mesh sieves
2Refining, dilution Ca (OH)
2Refining makes that its concentration is 100～150g/L;
(2) with the Ca (OH) of (1) gained
2Refining joins in the carburizing reagent still, adds Ca (OH)
2The white sugar of solid content 0.01～1%;
(3) the feeding temperature is 10～20 ℃ carbonic acid gas and an Air mixing gas, and wherein, the volumetric concentration of carbonic acid gas is 15～35%, and flow is 200～500ml/ minute, to reacting completely;
(4) slurries after the carbonization are carried out press filtration, obtain calcium carbonate filter cake;
(5) calcium carbonate filter cake is carried out high shear force and handle, can add polyphosphate simultaneously, its consumption is 0～5% of a calcium carbonate content, makes the calcium carbonate serosity of solid content 40～65%.
On the such scheme basis, the CaCO in the described step (4)
3The filter cake solid content is 35-65%.
High shear treatment method of the present invention comprises a kind of or its combination in high-speed stirring, ball milling, the high speed dispersion.
What described polyphosphate consumption was more excellent is 0.5～5% of calcium carbonate content, can be a kind of or its mixture in trisodium phosphate, sodium polyphosphate, tripoly phosphate sodium STPP, tripolyphosphate magnesium, the aluminium triphosphate etc.
The calcium carbonate serosity very high concentrations that the present invention makes compared with the prior art, solid content reaches 40～65%, and in addition, this kind slurries can prolonged preservation.
Embodiment
Embodiment 1
A kind of preparation process of light calcium carbonate serosity adds polyphosphate in high shear treatment, in turn include the following steps:
(1) gets the bucket that lime 3000g puts into 20L, add water and be digested to Ca (OH)
2Solution, 1 hour after 200 order sieving separating obtain Ca (OH)
2Refining, dilution Ca (OH)
2Refining, making its concentration is 120g/l;
(2) with concentration be the Ca (OH) of 120g/l
2Refining 8L joins in the carburizing reagent still of 10L, opens agitator, adds Ca (OH) simultaneously
2The white sugar of solid content 0.2%;
(3) the feeding temperature is 10～20 ℃ carbonic acid gas and an Air mixing gas, wherein, the volumetric concentration of carbonic acid gas is 25%, flow is 300ml/ minute, open air compressor machine and air door simultaneously, beginning carbonization, the slurries that negate is answered phenolphthalein reagent titration, the phenolphthalein bleach then is reacted to terminal point;
(4) slurries after the carbonization are put into press filtration in the cloth bag, obtain the calcium carbonate filter cake of solid content 40%;
(5) filter cake is put into carries out high shear force in the homogenizer and handle, add the 28.8g polyphosphate simultaneously, its consumption is behind 3%, 5 minute of lime carbonate solid content, makes the calcium carbonate serosity of solid content 40%.
Embodiment 2
A kind of preparation process of light calcium carbonate serosity adds polyphosphate in high shear treatment, in turn include the following steps:
(1) gets the bucket that lime 3000g puts into 20L, add water and be digested to Ca (OH)
2Solution, 1 hour after 200 purpose sieve get Ca (OH) after separating
2Refining, dilution Ca (OH)
2Refining, making its concentration is 130g/l;
(2) with concentration be the Ca (OH) of 130g/l
2Refining 8L joins in the carburizing reagent still of 10L, opens agitator, adds Ca (OH) simultaneously
2The white sugar of solid content 0.1%;
(3) the feeding temperature is 10～20 ℃ carbonic acid gas and an Air mixing gas, wherein, the volumetric concentration of carbonic acid gas is 25%, flow is 200ml/ minute, open air compressor machine and air door simultaneously, beginning carbonization, the slurries that negate is answered phenolphthalein reagent titration, the phenolphthalein bleach then is reacted to terminal point;
(4) slurries after the carbonization are put into press filtration in the cloth bag, obtain the calcium carbonate filter cake of solid content 60%;
(5) filter cake is put into carries out high shear force in the high speed dispersor and handle, add the 10.4g polyphosphate simultaneously, its consumption is behind 1%, 2 minute of lime carbonate solid content, makes the calcium carbonate serosity of solid content 60%.
Claims (5)
1, a kind of preparation process of light calcium carbonate serosity in turn includes the following steps:
(1) calcined limestone generates calcium oxide, and calcium oxide is sent into material feeder, is digested to Ca (OH)
2Solution gets Ca (OH) after the sub-sieving separating of 160～320 mesh sieves
2Refining, dilution Ca (OH)
2Refining, controlling concn are 100～150g/L;
(2) with the Ca (OH) of (1) gained
2Refining joins in the carburizing reagent still, adds Ca (OH)
2The white sugar of solid content 0.01～1%;
(3) the feeding temperature is 10～20 ℃ carbonic acid gas and an Air mixing gas, and wherein, the volumetric concentration of carbonic acid gas is 15～35%, and flow is 200～500ml/ minute, to reacting completely;
(4) slurries after the carbonization are carried out press filtration, obtain calcium carbonate filter cake;
(5) calcium carbonate filter cake is adopted the high shear force treatment process, add polyphosphate simultaneously, its consumption is 0～5% of a calcium carbonate content, makes the calcium carbonate serosity of solid content 40～65%.
2, a kind of preparation process of light calcium carbonate serosity according to claim 1 is characterized in that: the CaCO in the described step (4)
3The filter cake solid content is 35-65%.
3, preparation process of light calcium carbonate serosity according to claim 1 is characterized in that: described high shear treatment method comprises a kind of or its combination in high-speed stirring, ball milling, the high speed dispersion.
4, preparation process of light calcium carbonate serosity according to claim 1 is characterized in that: described polyphosphate consumption is 0.5～5% of a calcium carbonate content.
5, preparation process of light calcium carbonate serosity according to claim 4 is characterized in that: described polyphosphate is a kind of or its mixture in trisodium phosphate, sodium polyphosphate, tripoly phosphate sodium STPP, tripolyphosphate magnesium, the aluminium triphosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710038419 CN101037215A (en) | 2007-03-23 | 2007-03-23 | Preparation process of light calcium carbonate serosity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710038419 CN101037215A (en) | 2007-03-23 | 2007-03-23 | Preparation process of light calcium carbonate serosity |
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| Publication Number | Publication Date |
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| CN101037215A true CN101037215A (en) | 2007-09-19 |
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| CN 200710038419 Pending CN101037215A (en) | 2007-03-23 | 2007-03-23 | Preparation process of light calcium carbonate serosity |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395812A (en) * | 2013-07-11 | 2013-11-20 | 大连理工大学 | Method for controlling shape of calcium carbonate in solid carbonization process |
| CN105036171A (en) * | 2015-08-06 | 2015-11-11 | 广西碳酸钙产业化工程院有限公司 | Novel technology for continuously producing light calcium carbonate |
| CN107686122A (en) * | 2017-09-19 | 2018-02-13 | 中南大学湘雅医院 | Macro preparation technology and application method of soft agglomerated calcium carbonate nano powder |
| CN110697753A (en) * | 2019-10-23 | 2020-01-17 | 王亚双 | Method for preparing high-concentration calcium carbonate slurry from alkali recovery white mud and recycling calcium carbonate slurry |
-
2007
- 2007-03-23 CN CN 200710038419 patent/CN101037215A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395812A (en) * | 2013-07-11 | 2013-11-20 | 大连理工大学 | Method for controlling shape of calcium carbonate in solid carbonization process |
| CN105036171A (en) * | 2015-08-06 | 2015-11-11 | 广西碳酸钙产业化工程院有限公司 | Novel technology for continuously producing light calcium carbonate |
| CN107686122A (en) * | 2017-09-19 | 2018-02-13 | 中南大学湘雅医院 | Macro preparation technology and application method of soft agglomerated calcium carbonate nano powder |
| CN110697753A (en) * | 2019-10-23 | 2020-01-17 | 王亚双 | Method for preparing high-concentration calcium carbonate slurry from alkali recovery white mud and recycling calcium carbonate slurry |
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Open date: 20070919 |