CN102432054A - Method for producing light calcium carbonate slurry and light calcium carbonate paste - Google Patents
Method for producing light calcium carbonate slurry and light calcium carbonate paste Download PDFInfo
- Publication number
- CN102432054A CN102432054A CN2011102959531A CN201110295953A CN102432054A CN 102432054 A CN102432054 A CN 102432054A CN 2011102959531 A CN2011102959531 A CN 2011102959531A CN 201110295953 A CN201110295953 A CN 201110295953A CN 102432054 A CN102432054 A CN 102432054A
- Authority
- CN
- China
- Prior art keywords
- calcium carbonate
- light calcium
- slurry
- paste
- agent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Paper (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention relates to a method for producing light calcium carbonate slurry and light calcium carbonate paste. The method mainly comprises the following steps that 1, warm water and lime undergo a hydration reaction to produce Ca(OH)2 slurry; 2, the Ca(OH)2 slurry orderly passes through sieves having different mesh numbers at least more than twice, wherein the sieve having a small mesh number is used prior to the sieve having a large mesh number, and then passes through a cyclone separator, wherein a raw slurry baume degree is in a range of 10 to 14Be; and 3, the Ca(OH)2 slurry treated by the step 2 is fed into a carbonization tower, and reacts with a mixed gas of CO2 and N2; when a temperature of the reaction solution rises to a temperature of 50 DEG C, a crystal form control and desulfurizing agent is added into the reaction solution and CO2 is fed into the reaction solution; when the reaction is finished, a desulfurizing agent, a metal ion chelating agent and a pH conditioning agent are orderly added into the products; a carburization process is carried out for 5 minutes; and a centrifugal dehydration process and a drying process are carried out so that the light calcium carbonate paste is obtained. The method provided by the invention has the advantages that a yield and whiteness are high; through the added reagents, feeding time can be controlled automatically so that a light calcium carbonate paste crystal shape is complete and light calcium carbonate paste crystal sizes are uniform; solid content is controlled in dehydration so that the light calcium carbonate paste can be obtained without drying; and the light calcium carbonate slurry and light calcium carbonate paste have obvious prospects of application in a paper industry.
Description
Technical field
The present invention relates to a kind of chemical synthesis process, mainly be a kind of be the working method of the pulpous state and the paste light calcium carbonate of raw material with calcium hydroxide.
Background technology
Light calcium carbonate is a kind of inorganic chemical product with extensive use; Add opaqueness and the brightness papermaking calcium that filler can improve paper in the traditional and common papermaking; All using as raw material with water-ground limestone, paper applications research changes neutral examination glue into from acidity examination glue.In recent years, the producer that popularity is higher, with water-ground limestone gradate for light calcium carbonate be raw material.Traditional Production of Light Calcium Carbonate product settling volume is low, particle diameter is thick, will dry the complex process poor product quality after the dehydration.
Summary of the invention
The object of the invention will overcome the deficiency of above-mentioned technology just, and the working method of a kind of pulpous state and paste light calcium carbonate is provided.The pulpous state of producing and the chemical property good stability of paste light calcium carbonate, purity height; Objectionable constituent such as impurity and heavy metal are few; Complete crystalline structure (being spindle shape or spherical) is arranged, even particle size distribution, the flowability of preparation and good dispersivity; The paper of preparation is not only smooth but also have higher whiteness and bulk, and suitable papermaking utilizes pulpous state and paste.
The present invention solves the technical scheme that its technical problem adopts: the working method of this pulpous state and paste light calcium carbonate, and this method steps is following:
(1), the water crossed with filter process under 20-50 ℃, 5-10 by volume: 1 generates ca (oh) 2 slurries with lime after hydration reaction;
(2), to the big screen cloth of different numbers more than the secondary at least that passes through, the impurity in removal Ca (oh) 2 slurries obtains epigranular to Ca (oh) 2 slurries according to little; The highly purified slurry of giving birth to; Through wet cyclone, further remove impurity, comprise nonmetal arsenic; Heavy metals such as lead, the degree Beaume of giving birth to slurry reaches 10-14Be °;
(3), Ca (oh) 2 slurries are squeezed into carbonating tower by volume pump; React from carbonating tower bottom feeding CO2 and N2 gas mixture; When treating that solution temperature rises to 50 ℃, add crystal control agent and desulfuration agent, the volume percent of add-on is 0.3%; In solution, feeding CO2 concentration is the kiln gas of 28-35%, is 7 until pH value; Reaction adds desulfuration agent, metal ion chelation agent after finishing successively, crosses carbon 5 minutes after the pH value regulator, desulfuration agent, metal ion chelation agent, and the volume percent of the add-on of pH value regulator is respectively 0.07%, 0.004% and 0.3%; Centrifuge dehydration is carried out in the product filtration, got pulpous state and paste lime carbonate (control moisture when dehydration, the raising solid content just need not dried and can be obtained this product) after the drying; This is reflected at liquid phase and carries out, and adopts the continous way process, and its concrete operations condition is carbonization pressure: 0.08-0.103MPa, and CO2 concentration is 28-35% in the kiln gas, carbonization temperature 50-60 ℃.
As preferably, said lime by Wingdale 1000-1100 ℃ down calcining obtain, it is raw material that Wingdale adopts the fine and close Wingdale of purity >=99.5%.
As preferably, in step 2) described in Ca (oh) 2 slurries according to little to big screen cloth through three different meshes, be respectively 125 orders, 200 orders and 320 orders.
As preferably, ydrogen peroxide 50 is all adopted in described crystal control agent and desulfuration agent, and metal ion chelation agent is a Sodium hexametaphosphate 99, and the pH value regulator is a phosphoric acid.
Add opaqueness and the brightness that filler can improve paper in the papermaking, improve smoothness of paper and uniform state, increase the flexibility of paper; Reduce the water absorbability and the deformation extent of paper, also help simultaneously and reduce production costs, white titanium pigment has higher refractive index and scattering coefficient; It is good papermaking filler; But, generally only be used for high-grade thin page or leaf printing paper, to improve the opaqueness of paper because it costs an arm and a leg; And lime carbonate is cheap owing to it, and can improve the opaqueness of paper, the oil suction performance of ink of increase paper equally, has certain cost advantage as papermaking filler.
The effect that the present invention is useful is: output capacity is higher, whiteness is high, and its quality index reaches the top standard of home products.Come control automatically to advance the slurry time through the reagent that adds, the crystal shape of guaranteeing to generate paste lime carbonate is complete, crystallographic dimension is even.The control solid content just need not dried and can be got this product when dehydration, has filled up domestic blank.It is particularly remarkable to use manufacturing pulpous state and paste lime carbonate in paper industry, to use, and with pulpous state and paste lime carbonate coatings formulated flowability and good dispersibility, the paper of preparation is smooth have again higher whiteness, opaqueness and bulk.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with for example.Should be appreciated that described hereinly, and be not used in qualification the present invention for example only in order to explaining the present invention.
Embodiment: the working method of this pulpous state and paste light calcium carbonate may further comprise the steps:
1), with the water of filter process under 40 ℃ 7: 1 by volume with lime CaO, after hydration reaction, generate Ca (oh) 2 slurries, said lime by Wingdale 1000-1100 ℃ down calcining obtain; Wherein Wingdale employing high purity, heavy metal and the atomic fine and close Wingdale of impurity amount thereof are raw material, and specific targets are following: purity>=99.5%, heavy metal≤20ppm; Iron level≤80ppm; Lead content≤2ppm, arsenic content≤2ppm, Mg content≤0.3%.
2), Ca (oh) 2 slurries are complied with the little screen cloth that arrives big through three different meshes, are respectively 125 orders, 200 orders and 320 orders, remove the impurity in Ca (oh) 2 slurries; Obtaining epigranular, high purity is to give birth to slurry; Through wet cyclone, further remove impurity, comprise nonmetal silicon; Heavy metals such as lead, degree Beaume reach 1500 milliliters of 11.5Be ° of Ca (oh) 2 solution;
3), Ca (oh) 2 slurries squeeze into carbonating tower by volume pump, feed CO2 from the carbonating tower bottom, the N2 gas mixture reacts, when treating that solution temperature rises to 50 ℃; Adding ydrogen peroxide 50 0.3% (volume percent), in solution, feed CO2, is 7 until pH value; After reaction finished, adding volume percent successively was desulfuration agent hydrogen peroxide 0.07%, metal ion chelation agent hexa metaphosphoric acid potassium 0.004%; PH value regulator phosphoric acid 0.3% 4 hours afterwards carries out centrifuge dehydration with the product filtration, uses the sem observation crystal formation; Median size is the fusiform lime carbonate of 7.5cm, meets pulpous state and paste production requirement.
Table 1 slurry and packing quality ratio result
Analysis of experimental data
Can draw following analysis by above-mentioned experimental data:
(1) aspect optical property: filler level pulpous state fine particle calcium carbonate and filler level coarse whiting are copied the pattern whiteness and are more or less the same, and the main whiteness owing to used filler level coarse whiting is higher; But aspect opaqueness, the opaqueness of pattern that fine particle calcium carbonate is copied is higher, mainly is because fine particle calcium carbonate is higher than the optical scattering coefficient of coarse whiting, can improve the opaqueness of page behind the adding pulpous state fine particle calcium carbonate.
(2) aspect physicals: with its bulk of filler level pulpous state pattern that fine particle calcium carbonate is copied apparently higher than filler level coarse whiting; Hygroscopicity value all is lower than filler level coarse whiting; This is because the median size of filler level fine particle calcium carbonate is big than filler level coarse whiting; Has littler specific surface area accordingly; Adsorption to the AKD sizing agent is stronger than coarse whiting, thereby has reduced tensile index, fracture length, tear index, burst index and all be higher than filler level coarse whiting, and all the other indexs are suitable basically.
Being seen by the ash content index that (3) when identical amount of filler, filler level fine particle calcium carbonate is higher than the ash content of filler level coarse whiting, mainly is because the particle diameter of filler level coarse whiting is little, and when page dehydration moulding, it is poor that fiber is held back fine particle; And the particle diameter of filler level fine particle calcium carbonate is big, and paper fibre is had good bridging action, so be superior to filler level coarse whiting at filler level fine particle calcium carbonate aspect the ash content reservation.
(4) in addition; Because the water-ground limestone particle diameter is little and be the cubic structure mostly; Relative light calcium carbonate is to the wearing and tearing of its shaping and more serious than light calcium carbonate to the pickup of press felt, so the light calcium carbonate filler has better maneuverability aborning.
Conclusion: (1) pulpous state and paste lime carbonate are controlled between the 62%--68% through carbonization, dehydration solid content, need not dry direct the packing with the ton bag and mail to the client.Carry out slurrying again and add water, about 30% can water saving, and secondly manufacturer will volatilize between the expense thing moisture content solid content control 62%-68%, and manufacturer also can reach the reduction coal consumption of saving energy and reduce the cost.(2) compare with water-ground limestone, add and fill out light calcium carbonate, paper has higher bulk, reaches at 19.6% o'clock at greyness of paper, and bulk is higher by 15% than heavy lime carbonate.(3) use light calcium carbonate to add when filling out, have advantage than heavy lime carbonate aspect raising paper opaqueness, ash content and the reduction hygroscopicity value.(4) in general, because the ash content of light calcium carbonate keeps higher and has better production run property, can reduce production costs to a certain extent.
It is understandable that, for a person skilled in the art, technical scheme of the present invention and inventive concept are equal to replacement or change the protection domain that all should belong to the appended claim of the present invention.
Claims (4)
1. the working method of pulpous state and paste light calcium carbonate, it is characterized in that: this method steps is following:
(1), the water crossed with filter process under 20-50 ° of C, 5-10:1 and lime generate ca (oh) 2 slurries after hydration reaction by volume;
(2), to the big screen cloth of different numbers more than the secondary at least that passes through, the impurity in removal Ca (oh) 2 slurries obtains epigranular to Ca (oh) 2 slurries according to little; The highly purified slurry of giving birth to; Through wet cyclone, further remove impurity, the degree Beaume of giving birth to slurry reaches 10-14Be °;
(3), Ca (oh) 2 slurries squeeze into carbonating tower by volume pump, feed CO2 from the carbonating tower bottom and the N2 gas mixture reacts, when treating that solution temperature rises to 50 ° of C; Add crystal control agent and desulfuration agent; The volume percent of add-on is 0.3%, in solution, feeds CO2, is 7 until pH value; Reaction adds desulfuration agent, metal ion chelation agent after finishing successively, crosses carbon 5 minutes after the pH value regulator, desulfuration agent, metal ion chelation agent, and the volume percent of the add-on of pH value regulator is respectively 0.07%, 0.004% and 0.3%; Centrifuge dehydration is carried out in the product filtration, got pulpous state and paste lime carbonate after the drying; This is reflected at liquid phase and carries out, and adopts the continous way process, and its concrete operations condition is carbonization pressure: 0.08-0.103MPa, and CO2 concentration is 28-35% in the kiln gas, carbonization temperature 50-60 ° of C.
2. the working method of pulpous state according to claim 1 and paste light calcium carbonate is characterized in that: said lime is calcined acquisition by Wingdale under 1000-1100 ° of C, and it is raw material that Wingdale adopts the fine and close Wingdale of purity >=99.5%.
3. the working method of pulpous state according to claim 1 and paste light calcium carbonate is characterized in that: in step 2) described in Ca (oh) 2 slurries according to little to big screen cloth through three different meshes, be respectively 125 orders, 200 orders and 320 orders.
4. the working method of pulpous state according to claim 1 and paste light calcium carbonate is characterized in that: ydrogen peroxide 50 is all adopted in described crystal control agent and desulfuration agent, and metal ion chelation agent is a Sodium hexametaphosphate 99, and the pH value regulator is a phosphoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102959531A CN102432054A (en) | 2011-09-28 | 2011-09-28 | Method for producing light calcium carbonate slurry and light calcium carbonate paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102959531A CN102432054A (en) | 2011-09-28 | 2011-09-28 | Method for producing light calcium carbonate slurry and light calcium carbonate paste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102432054A true CN102432054A (en) | 2012-05-02 |
Family
ID=45980464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102959531A Pending CN102432054A (en) | 2011-09-28 | 2011-09-28 | Method for producing light calcium carbonate slurry and light calcium carbonate paste |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102432054A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016369A (en) * | 2014-12-30 | 2015-11-04 | 建德市云峰碳酸钙有限公司 | Production method for pasty calcium carbonate for papermaking |
| CN103897434B (en) * | 2014-04-19 | 2016-03-30 | 芮城新泰纳米材料有限公司 | The preparation method that plastic master batch is Nano calcium carbonate dedicated |
| CN105948094A (en) * | 2016-04-27 | 2016-09-21 | 深圳市第四能源科技有限公司 | Process for controlling particle size of nano calcium carbonate for sulfur fixation by alternating magnetic field |
| CN107459053A (en) * | 2017-08-10 | 2017-12-12 | 青阳县永诚钙业有限责任公司 | A kind of production method of paste calcium carbonate |
| CN107739530A (en) * | 2017-09-30 | 2018-02-27 | 广西华洋矿源材料有限公司 | A kind of special high thixotropic nano calcium carbonate preparation method of coating |
| CN109667189A (en) * | 2017-10-13 | 2019-04-23 | 东升新材料（山东）有限公司 | A kind of preparation method of chrysanthemum shape precipitated calcium carbonate filler |
| CN109665553A (en) * | 2017-10-13 | 2019-04-23 | 东升新材料（山东）有限公司 | A kind of preparation method of cubic light calcium carbonate filler |
| CN114620753A (en) * | 2021-11-29 | 2022-06-14 | 浙江天石纳米科技股份有限公司 | Low-carbon process method for producing light calcium carbonate by comprehensively utilizing chemical reaction heat |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724379A (en) * | 2005-06-13 | 2006-01-25 | 建德市天石碳酸钙有限责任公司 | Process for producing toothpaste grade light-weight calcium carbonate |
| CN1749168A (en) * | 2005-10-21 | 2006-03-22 | 颜鑫 | Continuous bubbling carbonizing new process for producing super fine active calcium carbonate |
| CN101318682A (en) * | 2008-06-30 | 2008-12-10 | 上海东升新材料有限公司 | Stephanoporate calcium carbonate, preparing method and application thereof |
-
2011
- 2011-09-28 CN CN2011102959531A patent/CN102432054A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724379A (en) * | 2005-06-13 | 2006-01-25 | 建德市天石碳酸钙有限责任公司 | Process for producing toothpaste grade light-weight calcium carbonate |
| CN1749168A (en) * | 2005-10-21 | 2006-03-22 | 颜鑫 | Continuous bubbling carbonizing new process for producing super fine active calcium carbonate |
| CN101318682A (en) * | 2008-06-30 | 2008-12-10 | 上海东升新材料有限公司 | Stephanoporate calcium carbonate, preparing method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 胡小芳等: "碳化法制备纳米碳酸钙工艺研究进展", 《广州化工》, vol. 33, no. 5, 31 January 2005 (2005-01-31) * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103897434B (en) * | 2014-04-19 | 2016-03-30 | 芮城新泰纳米材料有限公司 | The preparation method that plastic master batch is Nano calcium carbonate dedicated |
| CN105016369A (en) * | 2014-12-30 | 2015-11-04 | 建德市云峰碳酸钙有限公司 | Production method for pasty calcium carbonate for papermaking |
| CN105948094A (en) * | 2016-04-27 | 2016-09-21 | 深圳市第四能源科技有限公司 | Process for controlling particle size of nano calcium carbonate for sulfur fixation by alternating magnetic field |
| CN107459053A (en) * | 2017-08-10 | 2017-12-12 | 青阳县永诚钙业有限责任公司 | A kind of production method of paste calcium carbonate |
| CN107739530A (en) * | 2017-09-30 | 2018-02-27 | 广西华洋矿源材料有限公司 | A kind of special high thixotropic nano calcium carbonate preparation method of coating |
| CN109667189A (en) * | 2017-10-13 | 2019-04-23 | 东升新材料（山东）有限公司 | A kind of preparation method of chrysanthemum shape precipitated calcium carbonate filler |
| CN109665553A (en) * | 2017-10-13 | 2019-04-23 | 东升新材料（山东）有限公司 | A kind of preparation method of cubic light calcium carbonate filler |
| CN109665553B (en) * | 2017-10-13 | 2022-04-01 | 东升新材料（山东）有限公司 | Preparation method of cubic light calcium carbonate filler |
| CN114620753A (en) * | 2021-11-29 | 2022-06-14 | 浙江天石纳米科技股份有限公司 | Low-carbon process method for producing light calcium carbonate by comprehensively utilizing chemical reaction heat |
| CN114620753B (en) * | 2021-11-29 | 2023-08-18 | 浙江天石纳米科技股份有限公司 | Low-carbon process method for producing light calcium carbonate by comprehensively utilizing chemical reaction heat |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102432054A (en) | Method for producing light calcium carbonate slurry and light calcium carbonate paste | |
| US11447641B2 (en) | Fibrous structured amorphous silica including precipitated calcium carbonate and compositions of matter made therewith | |
| CN107686118B (en) | Method for preparing calcium silicate powder by liquid-phase dynamic hydrothermal synthesis method | |
| KR101401099B1 (en) | Lightweight calcium carbonate, process for producing the same, and printing paper containing the same | |
| CN104326480B (en) | The method that a kind of use waterglass and lime slurry prepare microporous calcium silicate | |
| CN102677177A (en) | Preparation method of calcium sulfate hemihydrate crystal whiskers high in length diameter ratio | |
| EP3221512B1 (en) | Method of producing a filler | |
| CN101913613A (en) | Process for synthesizing aciform wollastonite powder by desiliconizing alkaline liquor | |
| CN103938488A (en) | Method for preparing porous calcium silicate/ fiber co-milled filled paper | |
| CN101318685A (en) | Method for preparing ultra-fine active nano-calcium carbonate with low-ore grade limestone activation of activation tank | |
| US10017421B2 (en) | Method for preparing active calcium silicate | |
| CN101318682A (en) | Stephanoporate calcium carbonate, preparing method and application thereof | |
| CN109052446B (en) | Method for preparing calcium-aluminum hydrotalcite by using industrial waste residues as raw materials | |
| CN100572662C (en) | A kind of composite calcium carbonate and preparation method thereof | |
| CN105271290B (en) | Method for preparing analcite through high-alumina fly ash | |
| CN101935865A (en) | Preparation method of high length-diameter ratio calcium carbonate whiskers | |
| CN100467381C (en) | Flake light calcium carbonate and its preparing method and application | |
| CN102838141A (en) | Process for producing magnesium hydrate by removing silicon and aluminum from magnesite | |
| CN111320182B (en) | Composition for preparing microporous calcium silicate, microporous calcium silicate and preparation method thereof | |
| JP5946105B2 (en) | Phosphorus recovery material and phosphorus recovery method | |
| CN114921851A (en) | Calcium carbonate whisker prepared by carbide slag carbonization and preparation method thereof | |
| CN109667189B (en) | Preparation method of chrysanthemum-shaped light calcium carbonate filler | |
| CN102943306A (en) | Calcium carbonate whisker synthesizing and modified integrating method based on sol-gel method | |
| CN105084376A (en) | Method for recycling alkali generated when calcium silicate is prepared from low-modulus water glass | |
| CN112760483B (en) | Method for metal smelting separation and co-production of high-purity calcium product and high-purity calcium product prepared by method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120502 |