CN114591634A - Preparation method of active calcium carbonate for PVC (polyvinyl chloride) pipes - Google Patents

Preparation method of active calcium carbonate for PVC (polyvinyl chloride) pipes Download PDF

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CN114591634A
CN114591634A CN202210373786.6A CN202210373786A CN114591634A CN 114591634 A CN114591634 A CN 114591634A CN 202210373786 A CN202210373786 A CN 202210373786A CN 114591634 A CN114591634 A CN 114591634A
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calcium carbonate
ball
preparation
hollow ball
steps
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孔少云
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Jiangsu Zhile Wind Industry Technology Co ltd
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Jiangsu Zhile Wind Industry Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/02—Compounds of alkaline earth metals or magnesium
    • C09C1/021—Calcium carbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
    • C09C3/043—Drying, calcination
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/10—Treatment with macromolecular organic compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
    • C08K3/26—Carbonates; Bicarbonates
    • C08K2003/265—Calcium, strontium or barium carbonate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes
    • 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

Abstract

The invention discloses a preparation method of active calcium carbonate for PVC pipes, which belongs to the field of active calcium carbonate preparation, can realize that the dispersion of calcium carbonate is realized by introducing dispersion double spheres for accommodating calcium carbonate slurry, and through actions such as rotation, magnetic field application and the like, the calcium carbonate is always kept in a dynamic dispersion state, the agglomeration phenomenon of the calcium carbonate is greatly improved, and a dispersing agent is introduced on the basis to further deepen the dispersion effect, so that a better activation effect can be obtained when the calcium carbonate is activated, the preparation time is integrally shortened, and the preparation efficiency is greatly improved.

Description

Preparation method of active calcium carbonate for PVC (polyvinyl chloride) pipes
Technical Field
The invention relates to the field of preparation of activated calcium carbonate, and particularly relates to a preparation method of activated calcium carbonate for PVC pipes.
Background
Calcium carbonate is an inorganic non-metallic material with very wide application, and especially, the superfine calcium carbonate product is widely applied to various fields of rubber, plastics, coating, printing ink, papermaking, food, medicine and the like due to the characteristics of easily available raw material sources, low price, high whiteness, excellent performance, small pollution in the production process, good filling processability and the like; the development and utilization of various functional active superfine calcium carbonate products are more hot spots of research and development in the current calcium carbonate industry.
When the superfine calcium carbonate is modified by a wet method, the calcium carbonate particles in the slurry are easy to coagulate and agglomerate into large particles due to small particle size, large specific surface area and high surface energy; if the calcium carbonate particles are adsorbed and agglomerated in the slurry, because the acting force of mutual adsorption of the agglomerated particles is very large, the agglomerated particles are difficult to separate by subsequent processing treatment, and the agglomerated false large particles exist in the prepared active ultrafine calcium carbonate product; under the same condition, the agglomeration phenomenon is more obvious when the slurry concentration is higher; the agglomeration phenomenon is more serious when the prepared calcium carbonate particles are smaller; the presence of agglomerated particles not only can cause the characteristics of the ultrafine calcium carbonate product to be damaged, but also can cause difficulties in subsequent processing of the product, and particularly can adversely affect the activation modification of the ultrafine calcium carbonate.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a preparation method of activated calcium carbonate for PVC pipes, which can realize the dispersion of calcium carbonate by introducing dispersion double spheres for accommodating calcium carbonate slurry and by rotating, applying a magnetic field and other actions, keep the calcium carbonate in a dynamic scattering state all the time, greatly improve the agglomeration phenomenon of the calcium carbonate, introduce a dispersing agent on the basis to further deepen the dispersion effect, obtain a better activation effect when activating the calcium carbonate, integrally shorten the preparation time and greatly improve the preparation efficiency.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A preparation method of activated calcium carbonate for PVC pipes comprises the following steps:
s1, uniformly mixing calcium carbonate powder with the granularity of less than or equal to 100nm and water to prepare calcium carbonate slurry with the weight concentration of 30%;
s2, conveying the calcium carbonate slurry into the dispersing double spheres, and then adding a pH value regulator into the calcium carbonate slurry to control the pH value to be 8;
s3, starting the dispersion double spheres to rotate, introducing carbon dioxide into the dispersion double spheres, and slowly dripping a dispersing agent in the process to prepare a calcium carbonate emulsion;
s4, keeping the action of the dispersed double spheres unchanged, then adding a modified activating agent, heating the dispersed double spheres to 75 ℃, and keeping the action for 30-60min to obtain a calcium carbonate activated material;
s5, pouring out the calcium carbonate activated material, filtering, drying and removing water to prepare the active superfine calcium carbonate.
Further, in step S2, the pH adjusting agent is tartaric acid.
Further, in the step S3, the dispersant is sodium polyacrylate, the sodium polyacrylate accounts for 12% of the total weight of the calcium carbonate powder, and the dripping time is controlled to be 5-10 min.
Further, two balls of dispersion include outer cavity ball, interior cavity ball, intake pipe, inlet pipe and rotating base, outer cavity ball is installed in the rotating base upper end, interior cavity ball is installed in outer cavity ball inboard, intake pipe and inlet pipe are all installed in outer cavity ball upper end, the intake pipe runs through outer cavity ball and communicates with interior cavity ball, the inlet pipe communicates with outer cavity ball, and the intake pipe is arranged in to leading in the cavity ball carbon dioxide, and after it entered into the thick liquid, can utilize gas shock to make the thick liquid take place turbulent phenomenon on the one hand, and on the other hand utilizes the impact force when the bubble bursts, can improve the dispersion effect to calcium carbonate to a certain extent.
Further, center department between outer hollow ball and the interior hollow ball is equipped with the well ferromagnetic ball that a plurality of annular array distribute, well ferromagnetic ball and outer hollow ball upper and lower both ends between equal fixedly connected with elasticity band, after the magnetism power is applyed to well ferromagnetic ball, well ferromagnetic ball can drive the elasticity band and implement the shearing action to the thick liquid, compare with traditional stirring mixture, can improve the dispersion effect to calcium carbonate between outer hollow ball and the interior hollow ball, especially to the calcium carbonate that has the reunion phenomenon, the dispersant also can obtain the promotion to the dispersion effect of calcium carbonate under the effect of dispersion double ball, the dispersion effect is more than single mixture addition by a lot.
Further, interior cavity ball includes the main ball, extends post and a plurality of electro-magnet in, it installs in the main ball inboard to extend the post, the electro-magnet evenly install extend in and on the post and corresponding with well ferromagnetic ball, can exert magnetic attraction to well ferromagnetic ball and subsequent air stopping magnetic ball through the electro-magnet to trigger the shearing action and the release of carbon dioxide to the thick liquid.
Furthermore, a plurality of horn holes which are uniformly distributed are formed in the main ball, the diameter of each horn hole is gradually increased from inside to outside, a gas-stop magnetic ball is movably embedded in each horn hole, the outer diameter of each gas-stop magnetic ball is smaller than the maximum inner diameter of each horn hole and larger than the minimum diameter of each horn hole, an air overflow net is fixedly connected to an opening on the inner side of each horn hole, a plurality of elastic supporting pads which are uniformly distributed are fixedly connected between each gas-stop magnetic ball and the air overflow net, a waterproof breathable film is fixedly connected to an opening on the outer side of each horn hole, the waterproof breathable film is tightly attached to the air-stop magnetic ball, the air-stop magnetic ball blocks the waterproof breathable film in a normal state, carbon dioxide is difficult to release into the slurry through the horn holes, the air-stop magnetic ball is adsorbed to integrally migrate outwards after magnetic attraction force is applied to the electromagnet, so that the air-stop magnetic ball leaves the waterproof breathable film to recover smoothly, and the carbon dioxide can enter the slurry through the waterproof breathable film under the air pressure relationship, thereby dispersing the calcium carbonate.
Furthermore, end the magnetism ball of ending includes well core, magnetism and inhales end and end of ending the gas, magnetism is inhaled the end and is connect in well core both ends with end of ending the gas end symmetry, and magnetism inhales the end and is located well core and be close to one side of excessive gas net, and magnetism inhales the end and can drive whole migration under the magnetic attraction effect, and end the gas end and play the shutoff effect to waterproof ventilated membrane, the difficult gas leakage phenomenon that appears.
Furthermore, the central core part is made of a hard material, the air stopping end is made of an elastic material, the coverage area of the air stopping end is larger than that of the waterproof breathable film, and the magnetic attracting end is made of a ferromagnetic material.
Further, in the step S4, the modifying activator is lauric acid, and the lauric acid accounts for 2.5% of the total weight of the calcium carbonate powder.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) the scheme can realize that the dispersion of calcium carbonate is realized by introducing the dispersion double balls for containing calcium carbonate slurry, and actions such as rotating, applying a magnetic field and the like, and the calcium carbonate is always kept in a dynamic scattering state, so that the agglomeration phenomenon of the calcium carbonate is greatly improved, and the dispersion effect is further deepened by introducing the dispersing agent on the basis, so that a better activation effect can be obtained when the calcium carbonate is activated, meanwhile, the preparation time is integrally shortened, and the preparation efficiency is greatly improved.
(2) Two balls of dispersion include outer hollow ball, interior hollow ball, the intake pipe, inlet pipe and rotating base, outer hollow ball is installed in the rotating base upper end, interior hollow ball is installed in outer hollow ball inboard, intake pipe and inlet pipe are all installed in outer hollow ball upper end, the intake pipe runs through outer hollow ball and communicates with interior hollow ball, inlet pipe and outer hollow ball intercommunication, the intake pipe is used for letting in carbon dioxide in the inside hollow ball, after it enters into the thick liquid, can utilize gas shock to make the thick liquid take place turbulent phenomenon on the one hand, on the other hand utilizes the impact force when the bubble bursts, can improve the dispersion effect to calcium carbonate to a certain extent.
(3) Center department between outer hollow ball and the interior hollow ball is equipped with the well ferromagnetic ball that a plurality of annular array distribute, well ferromagnetic ball and outer hollow ball upper and lower equal fixedly connected with elasticity band between both ends, after magnetic attraction is applyed to well ferromagnetic ball, well ferromagnetic ball can drive the elasticity band and implement the shearing action to the thick liquid, compare with traditional stirring mixture, can improve the dispersion effect to calcium carbonate between outer hollow ball and the interior hollow ball, especially to the calcium carbonate that has the reunion phenomenon, the dispersant also can obtain the promotion to the dispersion effect of calcium carbonate under the effect of two balls of dispersion, the dispersion effect is more than single mixture addition and is higher than a lot.
(4) Interior cavity ball includes the main ball, extends post and a plurality of electro-magnet in, and it is inboard in the main ball to extend the post, and the electro-magnet evenly mounted extends on the post in and corresponding with well ferromagnetic ball, can exert magnetic attraction to well ferromagnetic ball and subsequent magnetism ball that ends through the electro-magnet to trigger the shearing action and the release of carbon dioxide to the thick liquid.
(5) The main ball is provided with a plurality of uniformly distributed horn holes, the diameter of each horn hole is gradually increased from inside to outside, an air-stop magnetic ball is movably embedded in each horn hole, the outer diameter of each air-stop magnetic ball is smaller than the maximum inner diameter of each horn hole and larger than the minimum diameter of each horn hole, an air overflow net is fixedly connected to the opening position in each horn hole, a plurality of uniformly distributed elastic supporting pads are fixedly connected between each air-stop magnetic ball and each air overflow net, a waterproof breathable film is fixedly connected to the opening position outside each horn hole, the waterproof breathable film is tightly attached to the air-stop magnetic ball, the air-stop magnetic ball blocks the waterproof breathable film in a normal state, carbon dioxide is difficult to release into slurry through the horn holes, and after the electromagnet exerts magnetic attraction force, the air-stop magnetic ball is adsorbed to integrally migrate outwards, so that the air-stop breathable film is separated from the waterproof breathable film and is recovered to be unblocked, and the carbon dioxide can enter the slurry under the air pressure relationship through the waterproof breathable film, thereby dispersing the calcium carbonate.
(6) End air magnetic ball includes well core, magnetism and inhales the end and ends the gas, and magnetism is inhaled the end and is connect in well core both ends with the gas end symmetry, and magnetism inhales the end and is located well core and be close to one side of gas overflow net, and magnetism inhales the end and can drive whole migration under the magnetic attraction effect, and the gas end plays the shutoff effect to waterproof ventilated membrane, is difficult for appearing gas leakage phenomenon.
Drawings
FIG. 1 is a schematic flow diagram of the present invention;
FIG. 2 is a schematic diagram of the structure of the dispersion nanospheres of the present invention;
FIG. 3 is a cross-sectional view of the dispersion twinball of the present invention in its normal state;
FIG. 4 is a cross-sectional view of the present invention in a magnetic attraction state with two separate balls;
FIG. 5 is a schematic view of the flare portion of the present invention;
FIG. 6 is a schematic structural view of the air-stopping magnetic ball of the present invention.
The reference numbers in the figures illustrate:
the device comprises an outer hollow ball 1, an inner hollow ball 2, a main ball 21, an inner extension column 22, an electromagnet 23, an air inlet pipe 3, a feed pipe 4, a rotary base 5, a middle ferromagnetic ball 6, an elastic belt 7, an air stop magnetic ball 8, a middle core part 81, a magnetic suction end 82, an air stop end 83, an air overflow net 9 and a waterproof and breathable film 10.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
referring to fig. 1-2, a method for preparing activated calcium carbonate for PVC pipes includes the following steps:
s1, uniformly mixing calcium carbonate powder with the granularity less than or equal to 100nm with water to prepare calcium carbonate slurry with the weight concentration of 30%;
s2, conveying the calcium carbonate slurry into the dispersing double spheres, and then adding a pH value regulator into the calcium carbonate slurry to control the pH value to be 8;
s3, starting the dispersion double spheres to rotate, introducing carbon dioxide into the dispersion double spheres, and slowly dripping a dispersing agent in the process to prepare a calcium carbonate emulsion;
s4, keeping the action of the dispersed double spheres unchanged, then adding a modified activating agent, heating the dispersed double spheres to 75 ℃, and keeping the action for 30-60min to obtain a calcium carbonate activated material;
s5, pouring out the calcium carbonate activated material, filtering, drying and removing water to prepare the active superfine calcium carbonate.
In step S2, the pH adjuster is tartaric acid.
In the step S3, the dispersant is sodium polyacrylate accounting for 12% of the total weight of the calcium carbonate powder, and the dripping time is controlled to be 5-10 min.
Referring to fig. 2, the dispersing double balls include an outer hollow ball 1, an inner hollow ball 2, an air inlet pipe 3, a feeding pipe 4 and a rotating base 5, the outer hollow ball 1 is mounted at the upper end of the rotating base 5, the inner hollow ball 2 is mounted at the inner side of the outer hollow ball 1, the air inlet pipe 3 and the feeding pipe 4 are both mounted at the upper end of the outer hollow ball 1, the air inlet pipe 3 penetrates through the outer hollow ball 1 and is communicated with the inner hollow ball 2, the feeding pipe 4 is communicated with the outer hollow ball 1, and the air inlet pipe 3 is used for introducing carbon dioxide into the inner hollow ball 2.
Referring to fig. 3-4, a plurality of middle ferromagnetic balls 6 distributed in an annular array are arranged at the center between the outer hollow ball 1 and the inner hollow ball 2, elastic belts 7 are fixedly connected between the middle ferromagnetic balls 6 and the upper and lower ends of the outer hollow ball 1, and after magnetic attraction is applied to the middle ferromagnetic balls 6, the middle ferromagnetic balls 6 drive the elastic belts 7 to perform shearing action on slurry.
Interior hollow ball 2 includes main ball 21, extends interior post 22 and a plurality of electro-magnet 23, and interior post 22 of extending is installed in main ball 21 inboard, and electro-magnet 23 evenly installs and extends on post 22 and corresponding with well ferromagnetic ball 6 in extending, can exert magnetic attraction to well ferromagnetic ball 6 and subsequent air stopping magnetic ball 8 through electro-magnet 23 to trigger the shearing action and the release of carbon dioxide to the thick liquid.
Referring to fig. 5, a plurality of horn holes are uniformly distributed on a main ball 21, the diameter of the horn hole increases gradually from inside to outside, a gas-stop magnetic ball 8 is movably embedded in the horn hole, the outer diameter of the gas-stop magnetic ball 8 is smaller than the maximum inner diameter of the horn hole and larger than the minimum diameter of the horn hole, an air-overflow net 9 is fixedly connected to the opening of the horn hole, a plurality of uniformly distributed elastic supporting pads are fixedly connected between the gas-stop magnetic ball 8 and the air-overflow net 9, a waterproof breathable film 10 is fixedly connected to the opening of the outer side of the horn hole, the waterproof breathable film 10 and the gas-stop magnetic ball 8 are tightly attached to each other, the gas-stop magnetic ball 8 blocks the waterproof breathable film 10 in a normal state, carbon dioxide is difficult to release into slurry through the horn hole, and after magnetic attraction is applied by an electromagnet 23, the gas-stop magnetic ball 8 is adsorbed and integrally migrates outward, so that the waterproof breathable film 10 is recovered to be unblocked, carbon dioxide can enter the slurry through the waterproof, gas permeable membrane 10 under atmospheric pressure to disperse the calcium carbonate.
Referring to fig. 6, the air-stop magnetic ball 8 includes a middle core portion 81, a magnetic-attraction end 82 and an air-stop end 83, the magnetic-attraction end 82 and the air-stop end 83 are symmetrically connected to two ends of the middle core portion 81, the magnetic-attraction end 82 is located at a side of the middle core portion 81 close to the air-escape net 9, the magnetic-attraction end 82 can drive the whole body to move under the action of magnetic attraction, and the air-stop end 83 blocks the waterproof breathable film 10, so that air leakage is not likely to occur.
The middle core part 81 is made of hard material, the air stop end 83 is made of elastic material, the coverage area is larger than that of the waterproof breathable film 10, and the magnetic attraction end 82 is made of ferromagnetic material.
In step S4, the modifying activator is lauric acid, and the lauric acid accounts for 2.5% of the total weight of the calcium carbonate powder.
The invention can realize that the dispersion of calcium carbonate is realized by introducing the dispersion double spheres for accommodating calcium carbonate slurry, rotating, applying a magnetic field and other actions, and the like, and the calcium carbonate is always kept in a dynamic scattering state, thereby greatly improving the agglomeration phenomenon of the calcium carbonate, and further deepening the dispersion effect by introducing the dispersing agent on the basis, and then obtaining better activation effect when activating the calcium carbonate, simultaneously integrally shortening the preparation time and greatly improving the preparation efficiency.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.

Claims (10)

1. A preparation method of active calcium carbonate for PVC pipes is characterized by comprising the following steps: the method comprises the following steps:
s1, uniformly mixing calcium carbonate powder with the granularity less than or equal to 100nm with water to prepare calcium carbonate slurry with the weight concentration of 30%;
s2, conveying the calcium carbonate slurry into the dispersing double spheres, and then adding a pH value regulator into the calcium carbonate slurry to control the pH value to be 8;
s3, starting the dispersion double spheres to rotate, introducing carbon dioxide into the dispersion double spheres, and slowly dripping a dispersing agent in the process to prepare a calcium carbonate emulsion;
s4, keeping the action of the dispersed double spheres unchanged, then adding a modified activating agent, heating the dispersed double spheres to 75 ℃, and keeping the action for 30-60min to obtain a calcium carbonate activated material;
s5, pouring out the calcium carbonate activated material, filtering, drying and removing water to prepare the active superfine calcium carbonate.
2. The preparation method of the activated calcium carbonate for the PVC pipe according to claim 1, which is characterized by comprising the following steps: in step S2, the pH adjuster is tartaric acid.
3. The preparation method of the activated calcium carbonate for the PVC pipe according to claim 1, which is characterized by comprising the following steps: in the step S3, the dispersing agent is sodium polyacrylate which accounts for 12 percent of the total weight of the calcium carbonate powder, and the dripping time is controlled to be 5-10 min.
4. The preparation method of the activated calcium carbonate for the PVC pipe according to claim 1, which is characterized by comprising the following steps: two balls of dispersion include outer hollow ball (1), interior hollow ball (2), intake pipe (3), inlet pipe (4) and rotating base (5), install in rotating base (5) upper end outer hollow ball (1), interior hollow ball (2) are installed in outer hollow ball (1) inboardly, intake pipe (3) and inlet pipe (4) are all installed in outer hollow ball (1) upper end, intake pipe (3) run through outer hollow ball (1) and with interior hollow ball (2) intercommunication, inlet pipe (4) and outer hollow ball (1) intercommunication.
5. The preparation method of the activated calcium carbonate for the PVC pipe according to claim 4, wherein the preparation method comprises the following steps: the central point between outer hollow ball (1) and interior hollow ball (2) is equipped with middle ferromagnetic ball (6) that a plurality of annular array distribute, equal fixedly connected with elasticity band (7) between middle ferromagnetic ball (6) and the upper and lower both ends of outer hollow ball (1).
6. The preparation method of the activated calcium carbonate for the PVC pipe according to claim 5, wherein the preparation method comprises the following steps: the inner hollow ball (2) comprises a main ball (21), an inner extension column (22) and a plurality of electromagnets (23), wherein the inner extension column (22) is installed on the inner side of the main ball (21), and the electromagnets (23) are uniformly installed on the inner extension column (22) and correspond to the middle ferromagnetic ball (6).
7. The preparation method of the activated calcium carbonate for the PVC pipe according to claim 6, which is characterized in that: the horn hole of seting up a plurality of evenly distributed on main ball (21), and horn hole from interior to outer aperture increase gradually, the activity is inlayed in the horn hole has only gas magnetic ball (8), and just ends the external diameter of gas magnetic ball (8) and be less than the biggest internal diameter of horn hole and be greater than the minimum diameter of horn hole, horn hole inboard opening part fixedly connected with gas overflow net (9), the elasticity of a plurality of evenly distributed of fixedly connected with props the pad between only gas magnetic ball (8) and gas overflow net (9), horn hole outside opening part fixedly connected with waterproof ventilated membrane (10), and closely laminate between waterproof ventilated membrane (10) and gas magnetic ball (8).
8. The preparation method of the activated calcium carbonate for the PVC pipe according to claim 7, which is characterized by comprising the following steps: the air-stopping magnetic ball (8) comprises a middle core part (81), a magnetic suction end (82) and an air-stopping end (83), wherein the magnetic suction end (82) and the air-stopping end (83) are symmetrically connected to two ends of the middle core part (81), and the magnetic suction end (82) is positioned on one side, close to the air overflow net (9), of the middle core part (81).
9. The preparation method of the activated calcium carbonate for the PVC pipe according to claim 8, wherein the preparation method comprises the following steps: the middle core part (81) is made of a hard material, the air stopping end (83) is made of an elastic material, the coverage area of the air stopping end is larger than that of the waterproof breathable film (10), and the magnetic attraction end (82) is made of a ferromagnetic material.
10. The preparation method of the activated calcium carbonate for the PVC pipe according to claim 1, which is characterized by comprising the following steps: in the step S4, the modifying activator is lauric acid, and the lauric acid accounts for 2.5% of the total weight of the calcium carbonate powder.
CN202210373786.6A 2022-04-07 2022-04-07 Preparation method of active calcium carbonate for PVC (polyvinyl chloride) pipes Pending CN114591634A (en)

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