CN101033075A - Method of preparing ultra-fine lightweight calcium carbonate - Google Patents
Method of preparing ultra-fine lightweight calcium carbonate Download PDFInfo
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- CN101033075A CN101033075A CNA2007100214477A CN200710021447A CN101033075A CN 101033075 A CN101033075 A CN 101033075A CN A2007100214477 A CNA2007100214477 A CN A2007100214477A CN 200710021447 A CN200710021447 A CN 200710021447A CN 101033075 A CN101033075 A CN 101033075A
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- calcium carbonate
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- lime
- acid anhydride
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Abstract
This invention provides a method for preparing super-fine light CaCO3 with white lime as the raw material including: adding suitable dispersant of anhydrosorbitol aliphatic ester and excessive ammonium bicarbonate solid in white lime containing 5-35% water to generate superfine CaCO3 particles with the diameter of 0.01-0.10mum by deposition and conversion reactions, then adds CaCO3 surface active agent to rub it continuously to get activated super-fine light CaCO3 powder after cooling, in which, ammonia overflowing in the reaction re-generates ammonium bicarbonate deposition with CO2 in an absorption pool.
Description
Technical field:
The present invention relates to a kind of superfine light calcium carbonate preparation method.
Background technology:
Light calcium carbonate now has been widely used in the Industrial products such as rubber, plastics, papermaking, coating, printing ink as mineral filler.At present, family surplus the light calcium carbonate domestic production enterprise about 300 produces light calcium carbonate per year more than 1,300,000 tons.
Superfine light calcium carbonate is a kind of novel ultrafine solids material that grows up in the later stage eighties, and at present, the superfine light calcium carbonate industrialized preparing process mainly contains two kinds, and a kind of is with slaked lime slurry and CO
2It is prepared that carburizing reagent is carried out in the gas doping; Another kind of then to carry out replacement(metathesis)reaction with water-soluble Ca salt and carbonate under suitable condition prepared.More than two kinds of preparation methods exist subject matters such as water consumption is big, cost height.
Summary of the invention:
The present invention is raw material with the dry hydrate, adds bicarbonate of ammonia, prepares lime carbonate by the precipitation conversion reaction,
Ca(OH)
2(s)+NH
4HCO
3(s)＝CaCO
3(s)+NH
3(g)+2H
2O
(l)
The ammonia that is generated is introduced in the cuvette and is generated ammoniacal liquor, is used to absorb the CO that lime kilning produces
2Gas is settled out the bicarbonate of ammonia solid again.
The general macrobead calcium carbonate powder that generates of white lime and ammonium bicarbonate aqueous solution reaction, economic worth is little.The present invention adopts the mode of less water and grinding, and with sorbitan fatty acid ester as dispersion agent, the calcium carbonate granule that is generated is tiny, white lime when dispersion agent exists and excessive bicarbonate of ammonia solid generate the calcium carbonate superfine powder particle by lapping mode.
According to above-mentioned reaction mechanism, the present invention takes following technical scheme:
White lime with water content 5-35% is raw material, add an amount of dispersion agent sorbitan fatty acid ester, the amount of substance 1.05-1.50 times of bicarbonate of ammonia solid that adds white lime again stirs, room temperature 5-35 ℃ was ground 10-40 minute in encloses container, add lime carbonate surfactant aluminate coupling agent or titanate coupling agent again, be warming up to 110 ℃ and continue to grind 20-40 minute, obtain the superfine light calcium carbonate that activation treatment is crossed after the cooling, product cut size 0.01-0.10 micron.
When above-mentioned reaction is carried out, bubbling air will react ammonia, carbonic acid gas and the water vapour of overflowing and blow out and introduce in the cuvette with pipeline in the encloses container.Cuvette is used to absorb the carbon dioxide that ammonia and lime kilning produce and regenerates ammonium bicarbonate precipitation.
The dispersion agent that is added is a sorbitan fatty acid ester, can use in anhydrous sorbitol acid anhydride mono-laurate (Span-20), anhydrous sorbitol acid anhydride monopalmitate (Span-40), sorbitan monostearate (Span-60) and the anhydrous sorbitol acid anhydride monoleate (Span-80) any, addition is the 0.2-5.0% of slaked lime solids quality.
The present invention is that the carborization that will just directly prepare calcium carbonate superfine powder in widely used carbonic acid gas feeding slaked lime slurry is converted into indirect carborization, be white lime when dispersion agent exists and the bicarbonate of ammonia solid generate calcium carbonate superfine powder by lapping mode, the ammonia that reaction is overflowed regenerates ammonium bicarbonate precipitation with carbon dioxide reaction in cuvette.Compare with existing carborization, the present invention has the following advantages:
1, production technique does not need water substantially, thereby does not have the industrial sewage discharging yet, and water saving and environment protecting are obvious.
2, production unit is simple, has saved cost of investment greatly.
3, omitted filtration step, dry carried out synchronously, and the dry water yield of being evaporated reduced more than 30%, greatly reduced production cost with activation.
4, the carbon dioxide that lime kilning produced stores with the bicarbonate of ammonia form, not only economy but also convenient.
Embodiment:
Example 1: water content 5% white lime 200g, add anhydrous sorbitol acid anhydride monopalmitate (Span-40) 9.5g, adding bicarbonate of ammonia solid 300g again stirs, room temperature was ground 40 minutes in encloses container for 33 ℃, add aluminate coupling agent 5g again, be warming up to 110 ℃ and continue to grind 40 minutes, obtain the superfine light calcium carbonate that activation treatment is crossed after the cooling, 0.03 micron of product cut size.
Example 2: water content 35% dry hydrate 200g, add anhydrous sorbitol acid anhydride monoleate (Span-80) 0.4g, adding bicarbonate of ammonia solid 150g again stirs, room temperature was ground 10 minutes in encloses container for 16 ℃, add titanate coupling agent 2g again, be warming up to 110 ℃ and continue to grind 30 minutes, obtain the superfine light calcium carbonate that activation treatment is crossed after the cooling, 0.06 micron of product cut size.
Example 3: water content 15% dry hydrate 200g, add anhydrous sorbitol acid anhydride mono-laurate (Span-20) 1.7g, adding bicarbonate of ammonia solid 220g again stirs, room temperature was ground 20 minutes in encloses container for 5 ℃, add titanate coupling agent 3g again, be warming up to 110 ℃ and continue to grind 20 minutes, obtain the superfine light calcium carbonate that activation treatment is crossed after the cooling, 0.05 micron of product cut size.
Claims (2)
1, a kind of method for preparing superfine light calcium carbonate is characterized in that this method carries out as follows:
White lime with water content 5-35% is raw material, add an amount of dispersion agent sorbitan fatty acid ester, adding 1.05-1.50 times of bicarbonate of ammonia solid of white lime amount of substance again stirs, room temperature 5-35 ℃ was ground 10-40 minute in encloses container, add lime carbonate surfactant aluminate coupling agent or titanate coupling agent again, being warming up to 110 ℃ continues to grind 20-40 minute, obtain the superfine light calcium carbonate that activation treatment is crossed after the cooling, product cut size 0.01-0.10 micron, when above-mentioned reaction is carried out, bubbling air will react the ammonia of overflowing in the encloses container, carbonic acid gas and water vapour blow out and introduce in the cuvette with pipeline.
2, require 1 described preparation method according to letter of authorization, it is characterized in that the dispersion agent sorbitan fatty acid ester that is added is anhydrous sorbitol acid anhydride mono-laurate (Span-20) or anhydrous sorbitol acid anhydride monopalmitate (Span-40) or sorbitan monostearate (Span-60) and anhydrous sorbitol acid anhydride monoleate (Span-80), addition is the 0.2-5.0% of slaked lime solids quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100214477A CN100567159C (en) | 2007-04-13 | 2007-04-13 | A kind of method for preparing superfine light calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100214477A CN100567159C (en) | 2007-04-13 | 2007-04-13 | A kind of method for preparing superfine light calcium carbonate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101033075A true CN101033075A (en) | 2007-09-12 |
| CN100567159C CN100567159C (en) | 2009-12-09 |
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|---|---|---|---|
| CNB2007100214477A Expired - Fee Related CN100567159C (en) | 2007-04-13 | 2007-04-13 | A kind of method for preparing superfine light calcium carbonate |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101955191A (en) * | 2010-05-27 | 2011-01-26 | 王嘉兴 | Method for preparing light calcium carbonate and ammonia water from waste obtained in process of producing sodium cyanate by urea method |
| CN101955215A (en) * | 2010-05-27 | 2011-01-26 | 王嘉兴 | Method for preparing fine calcium carbonate and ammonia water from wastes obtained in production process of sodium cyanate by urea method |
| CN101955216A (en) * | 2010-05-27 | 2011-01-26 | 王嘉兴 | Method for preparing super fine calcium carbonate and ammonia water from waste obtained in process for producing sodium cyanate by urea method |
| CN101967002A (en) * | 2010-11-03 | 2011-02-09 | 安徽工业大学 | Method for simultaneously producing superfine calcium carbonate and ammonium carbonate |
| CN102421307A (en) * | 2009-04-29 | 2012-04-18 | 英美烟草(投资)有限公司 | Aerosol generating material for a smoking article |
| CN102666388A (en) * | 2009-10-02 | 2012-09-12 | 卡西技术合成矿物有限公司 | Production of calcium carbonate |
| CN103007721A (en) * | 2012-11-26 | 2013-04-03 | 东南大学 | Ammonia circulation-based method and device for carbonating fixation of CO2 in coal-fired flue gas |
| CN106145173A (en) * | 2016-06-24 | 2016-11-23 | 张文凯 | A kind of preparation method of calcium carbonate self-assembled structures |
| CN107325587A (en) * | 2017-07-13 | 2017-11-07 | 广西田东民泰实业有限责任公司 | The Nano calcium carbonate dedicated preparation method of silicone structure sealant |
| CN107488280A (en) * | 2017-09-30 | 2017-12-19 | 广西华洋矿源材料有限公司 | A kind of preparation method of calcium carbonate superfine powder and rubber composite |
| CN107549801A (en) * | 2017-08-24 | 2018-01-09 | 福格森（武汉）生物科技股份有限公司 | A kind of multilayer embeds solid lipid calcium particulate |
| CN109368680A (en) * | 2018-12-29 | 2019-02-22 | 青岛融创新材料工程研究院有限公司 | It is a kind of with lime stone prepare precipitated calcium carbonate method and its precipitated calcium carbonate obtained |
| CN112408448A (en) * | 2020-11-27 | 2021-02-26 | 广西合山市华纳新材料科技有限公司 | Preparation method of mulberry fruit-shaped calcite micron calcium carbonate |
-
2007
- 2007-04-13 CN CNB2007100214477A patent/CN100567159C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421307A (en) * | 2009-04-29 | 2012-04-18 | 英美烟草(投资)有限公司 | Aerosol generating material for a smoking article |
| CN102666388B (en) * | 2009-10-02 | 2014-12-31 | 卡西技术合成矿物有限公司 | Production of calcium carbonate |
| CN102666388A (en) * | 2009-10-02 | 2012-09-12 | 卡西技术合成矿物有限公司 | Production of calcium carbonate |
| CN101955215A (en) * | 2010-05-27 | 2011-01-26 | 王嘉兴 | Method for preparing fine calcium carbonate and ammonia water from wastes obtained in production process of sodium cyanate by urea method |
| CN101955216A (en) * | 2010-05-27 | 2011-01-26 | 王嘉兴 | Method for preparing super fine calcium carbonate and ammonia water from waste obtained in process for producing sodium cyanate by urea method |
| CN101955191A (en) * | 2010-05-27 | 2011-01-26 | 王嘉兴 | Method for preparing light calcium carbonate and ammonia water from waste obtained in process of producing sodium cyanate by urea method |
| CN101967002A (en) * | 2010-11-03 | 2011-02-09 | 安徽工业大学 | Method for simultaneously producing superfine calcium carbonate and ammonium carbonate |
| CN103007721B (en) * | 2012-11-26 | 2015-01-28 | 东南大学 | Ammonia circulation-based method and device for carbonating fixation of CO2 in coal-fired flue gas |
| CN103007721A (en) * | 2012-11-26 | 2013-04-03 | 东南大学 | Ammonia circulation-based method and device for carbonating fixation of CO2 in coal-fired flue gas |
| CN106145173A (en) * | 2016-06-24 | 2016-11-23 | 张文凯 | A kind of preparation method of calcium carbonate self-assembled structures |
| CN106145173B (en) * | 2016-06-24 | 2017-12-01 | 张文凯 | A kind of preparation method of calcium carbonate self-assembled structures |
| CN107325587A (en) * | 2017-07-13 | 2017-11-07 | 广西田东民泰实业有限责任公司 | The Nano calcium carbonate dedicated preparation method of silicone structure sealant |
| CN107549801A (en) * | 2017-08-24 | 2018-01-09 | 福格森（武汉）生物科技股份有限公司 | A kind of multilayer embeds solid lipid calcium particulate |
| CN107549801B (en) * | 2017-08-24 | 2020-11-13 | 福格森（武汉）生物科技股份有限公司 | Multilayer embedded solid lipid calcium particle |
| CN107488280A (en) * | 2017-09-30 | 2017-12-19 | 广西华洋矿源材料有限公司 | A kind of preparation method of calcium carbonate superfine powder and rubber composite |
| CN109368680A (en) * | 2018-12-29 | 2019-02-22 | 青岛融创新材料工程研究院有限公司 | It is a kind of with lime stone prepare precipitated calcium carbonate method and its precipitated calcium carbonate obtained |
| CN112408448A (en) * | 2020-11-27 | 2021-02-26 | 广西合山市华纳新材料科技有限公司 | Preparation method of mulberry fruit-shaped calcite micron calcium carbonate |
| CN112408448B (en) * | 2020-11-27 | 2023-04-07 | 广西合山市华纳新材料科技有限公司 | Preparation method of mulberry fruit-shaped calcite micron calcium carbonate |
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| Publication number | Publication date |
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| CN100567159C (en) | 2009-12-09 |
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