CN113830810A - Light calcium carbonate forging process - Google Patents
Light calcium carbonate forging process Download PDFInfo
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- CN113830810A CN113830810A CN202010577641.9A CN202010577641A CN113830810A CN 113830810 A CN113830810 A CN 113830810A CN 202010577641 A CN202010577641 A CN 202010577641A CN 113830810 A CN113830810 A CN 113830810A
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- limestone
- forging
- steel balls
- calcium carbonate
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Links
- 238000005242 forging Methods 0.000 title claims abstract description 85
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 48
- 229910000019 calcium carbonate Inorganic materials 0.000 title claims abstract description 34
- 235000019738 Limestone Nutrition 0.000 claims abstract description 93
- 239000006028 limestone Substances 0.000 claims abstract description 93
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000003756 stirring Methods 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 239000012535 impurity Substances 0.000 claims abstract description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 80
- 239000000292 calcium oxide Substances 0.000 claims description 40
- 235000012255 calcium oxide Nutrition 0.000 claims description 40
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000000243 solution Substances 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 25
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 20
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 20
- 239000012670 alkaline solution Substances 0.000 claims description 15
- 239000002244 precipitate Substances 0.000 claims description 15
- 238000012216 screening Methods 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000001569 carbon dioxide Substances 0.000 claims description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000011259 mixed solution Substances 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000005054 agglomeration Methods 0.000 abstract 1
- 230000002776 aggregation Effects 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- -1 coatings Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000593 microemulsion method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
- C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
-
- 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
- Y02P20/10—Process efficiency
Abstract
The invention discloses a light calcium carbonate forging process, and particularly relates to the technical field of light calcium carbonate, which comprises the following steps: taking a certain amount of limestone, removing impurities, and taking out the crushed limestone powder. When the calcium carbonate is forged by limestone at high temperature, the limestone needs to be ground into powder firstly, so that the limestone can be conveniently heated, then a plurality of steel balls are poured into the powdery limestone, the steel balls and the limestone powder are fully mixed through manual stirring, then the mixture is poured into a forging furnace, the forging furnace needs to be continuously rotated in the process of heating the forging furnace, so that the forging furnace can be uniformly heated, in the rotating process, the steel balls can stir the limestone powder, the phenomenon of agglomeration in the forging process is avoided, the steel balls have high thermal conductivity, the heat can be quickly transferred into the limestone, the heating efficiency of the limestone is increased, and the occurrence of impurities is reduced.
Description
Technical Field
The invention relates to the technical field of light calcium carbonate, in particular to a light calcium carbonate forging process.
Background
Light calcium carbonate is used as an important inorganic powder material, is widely applied to the fields of plastics, rubber, adhesives, coatings, cosmetics, textiles, sewage purification and the like, and the industrial demand is increasing day by day. The preparation method of the light calcium carbonate mainly comprises a carbonization method and a double decomposition method, and also comprises a micro-emulsion method, an emulsion membrane method and a sol-gel method.
However, in the process of calcining the light calcium carbonate provided by the technical scheme, the limestone needs to be decomposed at high temperature, the requirement on the temperature is relatively high, the limestone cannot be completely decomposed easily, and certain impurities exist.
Disclosure of Invention
In order to overcome the above defects in the prior art, embodiments of the present invention provide a light calcium carbonate forging process, when calcium carbonate is forged by limestone at a high temperature, the limestone needs to be ground into powder, so as to be heated, then a plurality of steel balls are poured into the powdered limestone, and the steel balls and the limestone powder are fully mixed by manual stirring, and then the mixture is poured into a forging furnace.
In order to achieve the purpose, the invention provides the following technical scheme: a light calcium carbonate forging process comprises the following specific operation steps:
the method comprises the following steps: taking a certain amount of limestone, removing impurities, pouring the limestone into a pulverizer for pulverizing, and taking out pulverized limestone powder after a certain time;
step two: screening the crushed limestone powder through a screen, screening out limestone powder with larger particles, and crushing for the second time until the limestone is completely crushed and qualified;
step three: pouring a plurality of steel balls with the same specification and size into limestone powder, and manually stirring the steel balls and the limestone until the steel balls and the limestone are fully mixed;
step four: pouring the steel balls and the limestone after full mixing into a forging furnace, heating the forging furnace through flame combusted by a combustion chamber, and simultaneously starting a motor on one side of the forging furnace to drive the forging furnace to rotate in the heating process;
step five: placing an exhaust pipe at one end of the forging furnace into an alkaline solution, and introducing carbon dioxide generated in the forging process into the alkaline solution to absorb the carbon dioxide;
step six: after the limestone is forged at high temperature, generating quicklime, pouring the forged quicklime out of a forging furnace, placing the quicklime in a cooling chamber for cooling for a period of time, manually picking out steel balls in the quicklime, cleaning the steel balls by clear water, and recovering the steel balls;
step seven: pouring quicklime into clear water, stirring for a certain time by a stirrer until the quicklime is completely dissolved in the water, pouring a sodium carbonate solution, continuously stirring by the stirrer, and standing for a period of time after the solutions are fully mixed;
step eight: filtering white precipitate generated by standing the mixed solution through a filter screen, putting the white precipitate into an oven, drying for a period of time, and taking out to obtain the light calcium carbonate.
In a preferred embodiment, the time for crushing the limestone in the crusher in the first step is 2h-3h, and the processes for removing impurities from the limestone in the first step are cleaning, filtering and screening.
In a preferred embodiment, the qualified limestone particles in the second step have the diameter size of 0.3mm-0.5mm, and the secondary crushing time in the second step is 1h-2 h.
In a preferred embodiment, the diameter of the steel balls in the step three is 1mm-2mm, the number of the steel balls in the step three is 50-80, and the time for the manual stirring in the step three is 20min-30 min.
In a preferred embodiment, the temperature of the forging furnace in the forging process in the fourth step is 600-800 ℃, the heating time of the forging furnace in the fourth step is 3-5 h, and the rotating speed of the forging furnace driven by the motor in the fourth step is 60 r/min.
In a preferred embodiment, the alkaline solution in the step five is specifically sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 0.03mol/L-0.05 mol/L.
In a preferred embodiment, the temperature of the cooling chamber in the sixth step is 20-30 ℃, and the cooling time of the quicklime in the cooling chamber in the sixth step is 5-8 h.
In a preferred embodiment, the ratio of the sodium carbonate solution to the quicklime solution prepared in the step seven is 1: 1, the stirring time of the stirrer in the seventh step is 30-50 min.
In a preferred embodiment, the material of the filter screen in the step eight is gauze, the temperature of the oven in the step eight is 80-100 ℃, and the drying time of the white precipitate in the oven in the step eight is 1-2 h.
The invention has the technical effects and advantages that:
when forging calcium carbonate through the lime stone at high temperature, need grind into the powder with lime earlier, be convenient for heat the lime stone, then pour a plurality of steel balls into in powdered lime stone, stir through manual, make steel ball and lime stone powder intensive mixing, pour into the forging furnace in succession, at the in-process that heats the forging furnace, need the rotation that the forging furnace does not stop, make the forging furnace can thermally equivalent, and at the pivoted in-process, the steel ball can stir lime stone powder, avoid at the forging in-process, the phenomenon of caking appears, and the steel ball has higher heat conductivity, can be rapidly with in heat conduction limestone, the heating efficiency of lime stone has been increased, reduce impurity appearance.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the invention provides a light calcium carbonate forging process, which comprises the following specific operation steps:
the method comprises the following steps: taking a certain amount of limestone, removing impurities, pouring the limestone into a pulverizer for pulverizing, and taking out pulverized limestone powder after a certain time;
step two: screening the crushed limestone powder through a screen, screening out limestone powder with larger particles, and crushing for the second time until the limestone is completely crushed and qualified;
step three: pouring a plurality of steel balls with the same specification and size into limestone powder, and manually stirring the steel balls and the limestone until the steel balls and the limestone are fully mixed;
step four: pouring the steel balls and the limestone after full mixing into a forging furnace, heating the forging furnace through flame combusted by a combustion chamber, and simultaneously starting a motor on one side of the forging furnace to drive the forging furnace to rotate in the heating process;
step five: placing an exhaust pipe at one end of the forging furnace into an alkaline solution, and introducing carbon dioxide generated in the forging process into the alkaline solution to absorb the carbon dioxide;
step six: after the limestone is forged at high temperature, generating quicklime, pouring the forged quicklime out of a forging furnace, placing the quicklime in a cooling chamber for cooling for a period of time, manually picking out steel balls in the quicklime, cleaning the steel balls by clear water, and recovering the steel balls;
step seven: pouring quicklime into clear water, stirring for a certain time by a stirrer until the quicklime is completely dissolved in the water, pouring a sodium carbonate solution, continuously stirring by the stirrer, and standing for a period of time after the solutions are fully mixed;
step eight: filtering white precipitate generated by standing the mixed solution through a filter screen, putting the white precipitate into an oven, drying for a period of time, and taking out to obtain the light calcium carbonate.
Further, the time for crushing the limestone in the crusher in the first step is 2 hours, and the processes of removing impurities from the limestone in the first step comprise cleaning, filtering and screening.
Further, the qualified limestone particles in the second step are 0.3mm in diameter, and the secondary crushing time in the second step is 1 h.
Further, the diameter of the steel balls in the third step is 1mm, the number of the steel balls in the third step is 50, and the time for manual stirring in the third step is 20 min.
Further, the temperature of the forging furnace in the forging process in the fourth step is 600 ℃, the heating time of the forging furnace in the fourth step is 3 hours, and the rotating speed of the forging furnace driven by the motor in the fourth step is 60 r/min.
Further, in the fifth step, the alkaline solution is specifically a sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 0.03 mol/L.
Further, the temperature of the cooling chamber in the sixth step is 20 ℃, and the cooling time of the quicklime in the cooling chamber in the sixth step is 5 hours.
Further, the ratio of the sodium carbonate solution to the quicklime prepared in the step seven is 1: and 1, stirring by the stirrer in the seventh step for 30 min.
Further, the filter screen in the eighth step is made of gauze, the temperature of the oven in the eighth step is 80 ℃, and the drying time of the white precipitate in the oven in the eighth step is 1 hour.
Example 2:
the invention provides a light calcium carbonate forging process, which comprises the following specific operation steps:
the method comprises the following steps: taking a certain amount of limestone, removing impurities, pouring the limestone into a pulverizer for pulverizing, and taking out pulverized limestone powder after a certain time;
step two: screening the crushed limestone powder through a screen, screening out limestone powder with larger particles, and crushing for the second time until the limestone is completely crushed and qualified;
step three: pouring a plurality of steel balls with the same specification and size into limestone powder, and manually stirring the steel balls and the limestone until the steel balls and the limestone are fully mixed;
step four: pouring the steel balls and the limestone after full mixing into a forging furnace, heating the forging furnace through flame combusted by a combustion chamber, and simultaneously starting a motor on one side of the forging furnace to drive the forging furnace to rotate in the heating process;
step five: placing an exhaust pipe at one end of the forging furnace into an alkaline solution, and introducing carbon dioxide generated in the forging process into the alkaline solution to absorb the carbon dioxide;
step six: after the limestone is forged at high temperature, generating quicklime, pouring the forged quicklime out of a forging furnace, placing the quicklime in a cooling chamber for cooling for a period of time, manually picking out steel balls in the quicklime, cleaning the steel balls by clear water, and recovering the steel balls;
step seven: pouring quicklime into clear water, stirring for a certain time by a stirrer until the quicklime is completely dissolved in the water, pouring a sodium carbonate solution, continuously stirring by the stirrer, and standing for a period of time after the solutions are fully mixed;
step eight: filtering white precipitate generated by standing the mixed solution through a filter screen, putting the white precipitate into an oven, drying for a period of time, and taking out to obtain the light calcium carbonate.
Further, the time for crushing the limestone in the crusher in the first step is 2.5 hours, and the processes of removing impurities from the limestone in the first step comprise cleaning, filtering and screening.
Further, the qualified limestone particles in the second step are 0.4mm in diameter, and the secondary crushing time in the second step is 2 hours.
Further, the diameter of the steel balls in the third step is 1.5mm, the number of the steel balls in the third step is 60, and the time for manual stirring in the third step is 25 min.
Further, the temperature of the forging furnace in the forging process in the fourth step is 700 ℃, the heating time of the forging furnace in the fourth step is 4 hours, and the rotating speed of the forging furnace driven by the motor in the fourth step is 60 r/min.
Further, in the fifth step, the alkaline solution is specifically a sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 0.04 mol/L.
Further, the temperature of the cooling chamber in the sixth step is 25 ℃, and the cooling time of the quicklime in the cooling chamber in the sixth step is 6 hours.
Further, the ratio of the sodium carbonate solution to the quicklime prepared in the step seven is 1: and 1, stirring by the stirrer in the seventh step for 40 min.
Further, the filter screen in the eighth step is made of gauze, the temperature of the oven in the eighth step is 90 ℃, and the drying time of the white precipitate in the oven in the eighth step is 1.5 hours.
Example 3:
the invention provides a light calcium carbonate forging process, which comprises the following specific operation steps:
the method comprises the following steps: taking a certain amount of limestone, removing impurities, pouring the limestone into a pulverizer for pulverizing, and taking out pulverized limestone powder after a certain time;
step two: screening the crushed limestone powder through a screen, screening out limestone powder with larger particles, and crushing for the second time until the limestone is completely crushed and qualified;
step three: pouring a plurality of steel balls with the same specification and size into limestone powder, and manually stirring the steel balls and the limestone until the steel balls and the limestone are fully mixed;
step four: pouring the steel balls and the limestone after full mixing into a forging furnace, heating the forging furnace through flame combusted by a combustion chamber, and simultaneously starting a motor on one side of the forging furnace to drive the forging furnace to rotate in the heating process;
step five: placing an exhaust pipe at one end of the forging furnace into an alkaline solution, and introducing carbon dioxide generated in the forging process into the alkaline solution to absorb the carbon dioxide;
step six: after the limestone is forged at high temperature, generating quicklime, pouring the forged quicklime out of a forging furnace, placing the quicklime in a cooling chamber for cooling for a period of time, manually picking out steel balls in the quicklime, cleaning the steel balls by clear water, and recovering the steel balls;
step seven: pouring quicklime into clear water, stirring for a certain time by a stirrer until the quicklime is completely dissolved in the water, pouring a sodium carbonate solution, continuously stirring by the stirrer, and standing for a period of time after the solutions are fully mixed;
step eight: filtering white precipitate generated by standing the mixed solution through a filter screen, putting the white precipitate into an oven, drying for a period of time, and taking out to obtain the light calcium carbonate.
Further, the time for crushing the limestone in the crusher in the first step is 3 hours, and the processes of removing impurities from the limestone in the first step comprise cleaning, filtering and screening.
Further, the qualified limestone particles in the second step are 0.5mm in diameter, and the secondary crushing time in the second step is 2 hours.
Further, the diameter of the steel balls in the third step is 2mm, the number of the steel balls in the third step is 80, and the time for manual stirring in the third step is 30 min.
Further, the temperature of the forging furnace in the forging process in the fourth step is 800 ℃, the heating time of the forging furnace in the fourth step is 4 hours, and the rotating speed of the forging furnace driven by the motor in the fourth step is 60 r/min.
Further, in the fifth step, the alkaline solution is specifically a sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 0.05 mol/L.
Further, the temperature of the cooling chamber in the sixth step is 30 ℃, and the cooling time of the quicklime in the cooling chamber in the sixth step is 8 hours.
Further, the ratio of the sodium carbonate solution to the quicklime prepared in the step seven is 1: and 1, stirring by the stirrer in the seventh step for 40 min.
Further, the filter screen in the eighth step is made of gauze, the temperature of the oven in the eighth step is 90 ℃, and the drying time of the white precipitate in the oven in the eighth step is 2 hours.
According to the light calcium carbonate prepared in examples 1-3, a certain amount of samples were selected and tested for various data, and the following table was obtained:
as can be seen from the above table, the preparation method of calcium carbonate in example 1 has high heat conduction efficiency, fast heating speed, and high purity of the finished calcium carbonate product.
Finally, it should be noted that: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. A light calcium carbonate forging process is characterized in that: the specific operation steps are as follows:
the method comprises the following steps: taking a certain amount of limestone, removing impurities, pouring the limestone into a pulverizer for pulverizing, and taking out pulverized limestone powder after a certain time;
step two: screening the crushed limestone powder through a screen, screening out limestone powder with larger particles, and crushing for the second time until the limestone is completely crushed and qualified;
step three: pouring a plurality of steel balls with the same specification and size into limestone powder, and manually stirring the steel balls and the limestone until the steel balls and the limestone are fully mixed;
step four: pouring the steel balls and the limestone after full mixing into a forging furnace, heating the forging furnace through flame combusted by a combustion chamber, and simultaneously starting a motor on one side of the forging furnace to drive the forging furnace to rotate in the heating process;
step five: placing an exhaust pipe at one end of the forging furnace into an alkaline solution, and introducing carbon dioxide generated in the forging process into the alkaline solution to absorb the carbon dioxide;
step six: after the limestone is forged at high temperature, generating quicklime, pouring the forged quicklime out of a forging furnace, placing the quicklime in a cooling chamber for cooling for a period of time, manually picking out steel balls in the quicklime, cleaning the steel balls by clear water, and recovering the steel balls;
step seven: pouring quicklime into clear water, stirring for a certain time by a stirrer until the quicklime is completely dissolved in the water, pouring a sodium carbonate solution, continuously stirring by the stirrer, and standing for a period of time after the solutions are fully mixed;
step eight: filtering white precipitate generated by standing the mixed solution through a filter screen, putting the white precipitate into an oven, drying for a period of time, and taking out to obtain the light calcium carbonate.
2. The light calcium carbonate forging process according to claim 1, characterized in that: the time for crushing the limestone in the crusher in the first step is 2-3 h, and the processes of cleaning, filtering and screening the limestone in the first step are carried out.
3. The light calcium carbonate forging process according to claim 1, characterized in that: the diameter of the qualified limestone particles in the second step is 0.3mm-0.5mm, and the time for secondary crushing in the second step is 1h-2 h.
4. The light calcium carbonate forging process according to claim 1, characterized in that: the diameter of the steel balls in the third step is 1mm-2mm, the number of the steel balls in the third step is 50-80, and the time for manual stirring in the third step is 20min-30 min.
5. The light calcium carbonate forging process according to claim 1, characterized in that: the temperature of the forging furnace in the forging process in the fourth step is 600-800 ℃, the heating time of the forging furnace in the fourth step is 3-5 h, and the rotating speed of the forging furnace driven by the motor in the fourth step is 60 r/min.
6. The light calcium carbonate forging process according to claim 1, characterized in that: and in the fifth step, the alkaline solution is specifically a sodium hydroxide solution, and the concentration of the sodium hydroxide solution is 0.03-0.05 mol/L.
7. The light calcium carbonate forging process according to claim 1, characterized in that: the temperature of the cooling chamber in the sixth step is 20-30 ℃, and the cooling time of the quicklime in the cooling chamber in the sixth step is 5-8 h.
8. The light calcium carbonate forging process according to claim 1, characterized in that: the ratio of the sodium carbonate solution to the quicklime prepared in the step seven is 1: 1, the stirring time of the stirrer in the seventh step is 30-50 min.
9. The light calcium carbonate forging process according to claim 1, characterized in that: the material of the filter screen in the eighth step is gauze, the temperature of the oven in the eighth step is 80-100 ℃, and the drying time of the white precipitate in the oven in the eighth step is 1-2 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010577641.9A CN113830810A (en) | 2020-06-23 | 2020-06-23 | Light calcium carbonate forging process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010577641.9A CN113830810A (en) | 2020-06-23 | 2020-06-23 | Light calcium carbonate forging process |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103027211A (en) * | 2012-12-25 | 2013-04-10 | 衢州市易凡设计有限公司 | Steam heating furnace |
| CN107285358A (en) * | 2017-08-10 | 2017-10-24 | 青阳县永诚钙业有限责任公司 | A kind of method that precipitated calcium carbonate is prepared based on lime stone |
-
2020
- 2020-06-23 CN CN202010577641.9A patent/CN113830810A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103027211A (en) * | 2012-12-25 | 2013-04-10 | 衢州市易凡设计有限公司 | Steam heating furnace |
| CN107285358A (en) * | 2017-08-10 | 2017-10-24 | 青阳县永诚钙业有限责任公司 | A kind of method that precipitated calcium carbonate is prepared based on lime stone |
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