CN115677325A - Preparation process of nano rock plate with clear granular sensation and nano rock plate - Google Patents
Preparation process of nano rock plate with clear granular sensation and nano rock plate Download PDFInfo
- Publication number
- CN115677325A CN115677325A CN202211635310.1A CN202211635310A CN115677325A CN 115677325 A CN115677325 A CN 115677325A CN 202211635310 A CN202211635310 A CN 202211635310A CN 115677325 A CN115677325 A CN 115677325A
- Authority
- CN
- China
- Prior art keywords
- powder
- parts
- blank
- spot
- rock plate
- 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.)
- Granted
Links
Images
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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention discloses a preparation process of a nano rock plate with clear granular sensation and the nano rock plate, belonging to the field of ceramic rock plate manufacture, wherein the preparation process comprises the following steps: (1) ball-milling powder: respectively ball-milling the blank-based powder and the spot powder into slurry according to the formula proportion, and ageing for more than 48 hours; (2) spray drying: feeding the slurry into a spray drying tower for spray drying, and sieving the powder with a 30-mesh rotary screen; (3) mixing: adding the powder into a drum screen, and mixing the powder with a 60-mesh drum screen and a 100-mesh drum screen; (4) pressing: the powder material passes through a 50-mesh sieve before entering a press and is pressed; and (5) drying: (6) firing and post-treatment: obtaining the nano rock plate with clear particles. Compared with the existing ceramic rock plate with the spot size of the whole body blank of about 30 meshes, the nano rock plate prepared by the invention has finer and clearer whole body spot texture and granularity, and can meet the requirement of higher-end home decoration.
Description
Technical Field
The invention relates to the field of ceramic rock plate processing, in particular to a preparation process of a nano rock plate with clear granular sensation.
Background
The ceramic rock plate is a novel ceramic product, the oversized specification of the ceramic rock plate can bear texture elements which are more abundant than those of the traditional ceramic tile, and the ceramic rock plate has the advantages of simple and elegant decorative effect, less left seams and the like, so that the ceramic rock plate occupies a larger proportion in the market of high-end household products.
The prior manufacturers process the rock plate green brick powder into powder through ball milling and spray drying, form through pattern texture through material distribution by a material distribution vehicle, and produce ceramic rock plates after pressing and firing, wherein the ceramic rock plates have good decorative effect. Most of spots on the whole body blank of the existing ceramic rock plate are about 30 meshes, spot powder is thinned to 60-100 meshes in order to further improve the fineness of the grains of the whole body spots, and then the spot powder and blank base powder are mixed, distributed, pressed and sintered to obtain the nano rock plate with clear and fine granular feeling and whole body grains, which is a brand new ceramic rock plate.
However, since the powder used for the nano-rock plate has extremely fine granularity, most of the powder is hollow particles, the surface area of the powder is large, the moisture is relatively dry, the friction force between the powder and the water is large, and different production problems occur in subsequent mixing, distributing and pressing processing procedures.
(1) In the mixing and distributing process, the spot powder and the blank base powder need to be mutually and uniformly dispersed, the higher the uniform dispersion degree is, the clearer the granular feel of the spots is, but the fine powder has light weight and is easy to agglomerate, the spot powder agglomerates to form spots with non-uniform grain sizes, and the fineness of the granular feel is reduced; meanwhile, the fine powder has poor fluidity, so that the material distribution is uneven and not dispersed, the flatness and the density of the blank after the material distribution are directly influenced, and the blank is easy to deform, crack and other quality problems in the firing process due to the inconsistent density of the blank.
(2) In the pressing process, spots and textures are easily blurred, so that the spots have unclear granular feel and the overall textures are blurred and not fine.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a preparation process of a nano rock plate with clear granular sensation.
The second purpose of the invention is to provide a nano rock plate prepared by the preparation process of the nano rock plate with clear granular sensation.
One of the purposes of the invention is realized by adopting the following technical scheme: a preparation process of a nano rock plate with clear granular sensation comprises the following steps:
(1) Ball milling powder: respectively ball-milling the blank-based powder and the spot powder into slurry according to a formula ratio, respectively flowing the obtained slurry into respective slurry tanks, uniformly stirring, and aging for more than 48 hours;
(2) Spray drying: respectively feeding the blank slurry and the spot slurry aged in the slurry pool in the step (1) into a spray drying tower through a slurry pump of the spray drying tower, performing spray drying through the spray drying tower to obtain blank-based powder and spot powder, respectively sieving the blank-based powder and the spot powder through a 30-mesh rotary screen, and taking the powder with the surplus of the screen to respectively obtain the blank-based powder and the spot powder with the required grading of the nano rock plate;
(3) Mixing: simultaneously adding the blank base powder and the spot powder prepared in the step (2) into a drum screen, uniformly mixing the blank base powder and the spot powder through a 60-mesh drum screen, then through a 100-mesh drum screen and a screen mesh, and filtering to obtain blank powder with uniform particles;
in the step (1) or (3), a step of adding a powder modifier is further included; in the step (1), before ball milling, powder modifier is respectively and uniformly mixed in the blank base powder and the spot powder, and the dosage of the powder modifier is 1-3% of the blank base powder and the spot powder respectively according to mass percentage; in the step (3), the powder modifier, the blank-based powder and the spot powder are simultaneously added into a drum screen to be mixed, and the amount of the powder modifier is 0.5-1% of the total amount of the blank-based powder and the spot powder in percentage by mass;
(4) Pressing: before entering a press, passing the green body powder mixed in the step (3) through a 50-mesh sieve, taking the rest powder, and feeding the powder into the press through a pipeline for press forming;
(5) And (3) drying: conveying the green body pressed and formed in the step (4) into a drying kiln for drying;
(6) And (3) firing: and (4) feeding the blank dried in the step (5) into a calcining kiln for calcining to obtain the nano rock plate with clear particles.
Further, in the step (1), the blank-based powder material is prepared from the following components in parts by weight: 10-30 parts of potassium-sodalite particles, 5-15 parts of potassium sand, 5-15 parts of ultrawhite stone particles, 1-10 parts of superplastic sand, 10-30 parts of selected sand, 15-30 parts of kaolin, 10-20 parts of high-white kaolin, 1-10 parts of high-alumina powder, 1-10 parts of high-viscosity clay, 5-15 parts of Fubai sand, 0.1-5 parts of raw talc, 0.1-1.5 parts of dispergator, 0.1-2 parts of reinforcing agent and 0-5 parts of pigment for blank;
the spot powder is prepared from the following components in parts by weight: 10-30 parts of potassium-sodalite particles, 5-15 parts of potassium sand, 5-15 parts of ultra-white stone particles, 1-10 parts of strong plastic sand, 10-30 parts of selected sand, 15-30 parts of kaolin, 10-20 parts of high-white kaolin, 1-10 parts of high-alumina powder, 1-10 parts of high clay, 5-15 parts of Fubai sand, 0.1-5 parts of raw talc, 0.1-1.5 parts of dispergator, 0.1-2 parts of reinforcing agent and 0-5 parts of pigment for blank;
wherein, the water content of the slurry obtained by ball milling of the blank-based powder and the spot powder is 48-52%, the flow rate is 10-30 seconds, the specific gravity is 1.40-1.60g/ml, and the fineness of the slurry is 0.6-0.8% of the balance of a 250-mesh sieve.
Further, in the step (2), the pressure of the spray tower slurry pump is 18-22 kg/s; the aperture of a spray sheet of a spray gun head used in the spray drying tower is 1.1-1.4mm, and the thickness of a spinning sheet of the spray gun head is 6-8mm; the temperature in the spray tower is maintained at 380-450 ℃.
Further, in the step (2), the gradation of the blank-based powder and the spot powder is that: less than 0.5% of 40 meshes, 5-7% of 60 meshes, 70-85% of 100 meshes, 9-20% of 120 meshes and 3-4% of water.
Further, in the step (3), the mixing mass ratio of the blank-based powder to the spot powder is (7-9): 1.
further, in the step (1) or (3), the powder modifier comprises a component (B) in a weight ratio of 1: (2-5) sodium polypropylene sulfonate and alkylphenol ethoxylates.
Further, in the step (4), the molding pressure is 550 to 560kg/cm 2 The forming speed was 11.5 times/min.
Further, in the step (5), the drying temperature is 250-300 ℃, and the drying is carried out until the moisture content is less than or equal to 0.3%.
Further, in the step (6), the calcining temperature is 1150-1250 ℃ and the calcining time is 90-120min.
The second purpose of the invention is realized by adopting the following technical scheme: the nano rock plate with clear granular sensation is characterized by being prepared by the preparation process of the nano rock plate.
Compared with the prior art, the invention has the beneficial effects that:
(1) Compared with the existing ceramic rock plate with the through body blank spot size of about 30 meshes, the gradation of the blank base powder and the spot powder of the nano rock plate completely selects 60-100 meshes of powder, so that the through body spot of the nano rock plate has finer texture and clearer granularity, and can meet the requirement of higher-end home decoration.
(2) The nano rock plate is extremely fine in powder, the fine powder is light in weight and easy to agglomerate, and the fine powder is poor in fluidity, so that the cloth is uneven and not dispersed. The process adjustment specifically comprises: and (3) adjusting the grading of the blank base powder and the spot powder to be uniform in different processing links in a sieving mode so as to meet the requirement on fineness of the powder. And then, by adding the powder modifier, the problems of agglomeration and poor fluidity of the superfine powder are solved, the uniformity of the spot particle size is improved, the granular sense definition and fineness are improved, the flatness and the density of the blank after the cloth are improved, the quality problems of deformation, cracking and the like in the firing process are avoided, and the problem of spot texture blurring generated in the pressing process is also avoided.
Drawings
FIG. 1 is a photograph of a nano-rock plate with a clear granular sensation obtained in example 2 of the present invention;
FIG. 2 is a photograph of a conventional ceramic rock plate according to comparative example 7 of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
In the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified.
The invention provides a preparation process of a nano rock plate with clear granular sensation, which comprises the following steps:
(1) Ball milling powder: respectively ball-milling the blank-based powder and the spot powder into slurry according to a formula ratio, respectively flowing the obtained slurry into respective slurry tanks, uniformly stirring, and aging for more than 48 hours;
as a further embodiment, the green base powder is prepared from the following components in parts by weight: 10-30 parts of potassium-sodalite particles, 5-15 parts of potassium sand, 5-15 parts of ultra-white stone particles, 1-10 parts of strong plastic sand, 10-30 parts of selected sand, 15-30 parts of kaolin, 10-20 parts of high-white kaolin, 1-10 parts of high-alumina powder, 1-10 parts of high clay, 5-15 parts of Fubai sand, 0.1-5 parts of raw talc, 0.1-1.5 parts of dispergator, 0.1-2 parts of reinforcing agent and 0-5 parts of pigment for blank;
the spot powder is prepared from the following components in parts by weight: 10-30 parts of potassium-sodalite particles, 5-15 parts of potassium sand, 5-15 parts of ultrawhite stone particles, 1-10 parts of superplastic sand, 10-30 parts of selected sand, 15-30 parts of kaolin, 10-20 parts of high-white kaolin, 1-10 parts of high-alumina powder, 1-10 parts of high-viscosity clay, 5-15 parts of Fubai sand, 0.1-5 parts of raw talc, 0.1-1.5 parts of dispergator, 0.1-2 parts of reinforcing agent and 0-5 parts of pigment for blank;
wherein, the water content of the slurry obtained by ball milling of the blank-based powder and the spot powder is 48-52%, the flow rate is 10-30 seconds, the specific gravity is 1.40-1.60g/ml, and the fineness of the slurry is 0.6-0.8% of the balance of a 250-mesh sieve.
(2) And (3) spray drying: respectively feeding the blank slurry and the spot slurry aged in the slurry pool in the step (1) into a spray drying tower through a slurry pump of the spray drying tower, performing spray drying through the spray drying tower to obtain blank-based powder and spot powder, respectively sieving the blank-based powder and the spot powder through a 30-mesh rotary screen, and taking the powder with the surplus of the screen to respectively obtain the blank-based powder and the spot powder with the required grading of the nano rock plate;
as a further embodiment, the pressure of the spray tower slurry pump is 18-22 kg/s; the aperture of a spray sheet of a spray gun head used in the spray drying tower is 1.1-1.4mm, and the thickness of a spinning sheet of the spray gun head is 6-8mm; the temperature in the spray tower is maintained at 380-450 ℃.
As a further embodiment, the base powder and the spot powder are both graded as follows: less than 0.5 percent of 40 meshes, 5-7 percent of 60 meshes, 70-85 percent of 100 meshes, 9-20 percent of 120 meshes and 3-4 percent of water content.
In the step, the internal structure and the technological parameters of the spray gun head of the original equipment are adjusted, the size of the hole diameter in the spray gun head is reduced, the thickness of the vortex sheet is improved, the pressure of slurry supplied to a spray drying tower is increased, and therefore the 60-100-mesh powder grain composition required for producing the nano rock plate is obtained, the powder loss rate is reduced to 15-30% from more than 50%, the powder utilization rate is greatly improved, and the raw material loss cost is reduced. Meanwhile, under the condition of keeping original equipment, the requirement of raw material production and processing of a new product of the nano rock plate can be met only by changing the internal structure of the spray gun head, and the equipment investment cost is reduced.
(3) Mixing: simultaneously adding the blank base powder and the spot powder prepared in the step (2) into a drum screen, uniformly mixing the blank base powder and the spot powder through a 60-mesh drum screen, then through a 100-mesh drum screen and a screen mesh, and filtering to obtain blank powder with uniform particles; the mixing mass ratio of the blank-based powder to the spot powder is (7-9): 1.
(4) Pressing: before entering a press, passing the green body powder mixed in the step (3) through a 50-mesh sieve, taking the rest powder, and feeding the powder into the press through a pipeline for press forming; the molding pressure is 550-560kg/cm 2 The forming speed was 11.5 times/min.
(5) And (3) drying: and (5) conveying the green body subjected to compression molding in the step (4) into a drying kiln for drying at the temperature of 250-300 ℃ until the moisture content is less than or equal to 0.3%.
(6) And (3) firing: and (4) delivering the blank dried in the step (5) into a calcining kiln for calcining at 1150-1250 ℃ for 90-120min to obtain the nano rock plate with clear particles.
Compared with the existing ceramic rock plate with the through blank spot size of about 30 meshes, the blank base powder and the spot powder of the nano rock plate are completely selected from 60-100 meshes of powder in the gradation, so that the through spot texture of the nano rock plate is finer and smoother, and the requirement of higher-end home decoration can be met. In order to completely select 60-100 meshes of powder for blank powder gradation, in the invention, in the step (2) of spray drying, the blank-based powder and the spot powder are prepared and then respectively pass through 30 meshes of rotary screens, so that agglomerated large-particle powder formed in the spray drying process is removed. In the step (3), after the blank-based powder and the spot powder are prepared, the blank-based powder and the spot powder pass through a 60-mesh roller screen and then pass through a 100-mesh roller screen to remove 120-mesh ultrafine particle powder, so that the grading consistency of the blank-based powder and the spot powder of the nano rock plate is ensured, the sedimentation and layering phenomena and uneven mixing caused by different powder specific gravities in the mixing and pressing processes are avoided, and the spot powder can be uniformly dispersed in the blank-based powder. In the step (4) of pressing, the blank powder obtained after mixing the blank-based powder and the spot powder enters a press and is sieved by a 30-mesh sieve, so that the powder which is agglomerated due to self weight accumulation in the powder transfer process is removed, because the fine powder is stacked, part of the fine powder is agglomerated due to self weight accumulation in the belt transportation process, and part of the fine powder is agglomerated due to friction, or part of the fine powder is agglomerated due to the fact that the fine powder has water and viscosity, therefore, the influence of inconsistent spot granularity caused by agglomeration of the powder can be further effectively reduced by additionally arranging a sieving step before entering the press, and the definition and the fineness of the spot granules of the nano rock plate are improved.
As a further preferred scheme, the nano rock board provided by the invention has the advantages that the used powder is extremely fine, the fine powder is light in weight and easy to agglomerate, and the fine powder is poor in fluidity, so that the cloth is not uniform and dispersed.
Specifically, one of the following two ways of adding a powder modifier for modification treatment can be adopted:
the first method comprises the following steps: adding a powder modifier before ball milling in the step (1), and uniformly mixing the powder modifier in the raw material powder by adopting a wet mixing mode. Because the nano rock plate raw material powder comprises blank base powder and spot powder for forming chromatic aberration, and the ball milling process is independent and separated, the added powder modifier needs to be added in a separate adding mode according to the weight of each powder, and the specific operation and addition are as follows: in the step (1), before ball milling, powder modifier is respectively and uniformly mixed in the blank-based powder and the spot powder, and the dosage of the powder modifier is 1-3% of the blank-based powder and the spot powder respectively according to the mass percentage; the powder modifier comprises the following components in a weight ratio of 1: (2-5) sodium polypropylene sulfonate and alkylphenol ethoxylates.
And the second method comprises the following steps: because the dry powder is obtained in the step (2), a dry mixing mode is adopted, in the step (3), the powder modifier, the blank-based powder and the spot powder are simultaneously added into a drum screen for dry mixing, and the using amount of the powder modifier is 0.5-1% of the total amount of the blank-based powder and the spot powder in percentage by mass; the powder modifier comprises the following components in a weight ratio of 1: and (2-5) sodium polypropylene sulfonate and alkylphenol polyoxyethylene.
The modification treatment principle of the invention improves the agglomeration and fluidity problems of powder materials by screening the modifier, compared with the conventional modifier sodium stearate, the invention utilizes the compounding of sodium polyacrylate sulfonate and alkylphenol polyoxyethylene to generate steric hindrance between the surfaces of extremely fine powder materials, when the fine powder particles are close to each other, the fine powder particles are mutually staggered in a sliding way to generate a certain repulsive force, thereby effectively protecting the powder materials from agglomeration, further improving the fluidity of the powder materials and achieving the effect of high dispersion of the powder materials.
The invention also provides a nano rock plate with clear granular sensation, which is prepared by the preparation process of the nano rock plate.
The following are specific examples of the present invention, and raw materials, equipments and the like used in the following examples can be obtained by purchasing them unless otherwise specified.
Examples 1 to 3 and comparative examples 1 to 7
The ceramic rock plates were processed according to the preparation processes of examples 1 to 3 and comparative examples 1 to 7, respectively. The compositions of the green-based powder and the spot powder used in the above examples were identical, unless otherwise specified. The blank-based powder material is prepared from the following components in parts by weight: 22 parts of potassium and sodalite grains, 13 parts of potassium sand, 12 parts of ultrawhite stone grains, 8 parts of strong plastic sand, 18 parts of selected sand, 26 parts of kaolin, 13 parts of high white kaolin, 7 parts of high aluminum powder, 8 parts of high clay, 12 parts of Fubai sand, 2.5 parts of raw talc, 0.8 part of dispergator, 1.2 parts of reinforcing agent and 2 parts of pigment for blank. The spot powder is prepared from the following components in parts by weight: 15 parts of potassium-sodalite particles, 9 parts of potassium sand, 13 parts of ultra-white stone particles, 8 parts of strong plastic sand, 25 parts of selected sand, 26 parts of kaolin, 18 parts of high-white kaolin, 8 parts of high-aluminum powder, 8 parts of high clay, 12 parts of Fubai sand, 2 parts of raw talc, 1.5 parts of dispergator, 1.5 parts of reinforcing agent and 1 part of pigment for blank. Wherein the dispergator is common water glass. The reinforcing agent is lignin. The coloring materials for the green compacts used in the green compact base powders of examples 1 to 3 and comparative examples 1 to 7 were mixed in a mass ratio of 1:1.2:1, the black pigment consisting of iron oxide, cobalt oxide and manganese dioxide metal oxide, and the blank pigment used by the spot powder is zirconium silicate; the spray tower mud pump selected for this example is a spray tower mud pump of the type of a waysite pump 1600-75. The model of the selected spray drying tower is BSJ10000 phi 11000 multiplied by H10500.
Example 1
A preparation process of a nano rock plate with clear granular sensation comprises the following steps:
(1) Ball-milling powder: respectively and uniformly mixing a powder modifier in the blank-based powder and the spot powder before ball milling, respectively ball milling the blank-based powder and the spot powder mixed with the powder modifier into slurry according to a formula proportion, respectively flowing the obtained slurry into respective slurry pools, uniformly stirring, and ageing for more than 48 hours; wherein, the water content of the slurry obtained by ball milling of the blank-based powder and the spot powder is 49 percent, the flow rate is 15 seconds, the specific gravity is 1.45g/ml, and the fineness of the slurry is 0.65 percent of the rest of the 250-mesh sieve. The using amount of the powder modifier is 1.5 percent of the respective blank base powder and spot powder according to the mass percentage; the powder modifier comprises the following components in a weight ratio of 1:2 sodium polypropylene sulfonate and alkylphenol polyoxyethylene.
(2) Spray drying: respectively feeding the blank slurry and the spot slurry aged in the slurry pool in the step (1) into a spray drying tower through a slurry pump of the spray drying tower, performing spray drying through the spray drying tower to obtain blank-based powder and spot powder, respectively sieving the blank-based powder and the spot powder through a 30-mesh rotary screen, and taking the powder with the surplus of the screen to respectively obtain the blank-based powder and the spot powder with the required grading of the nano rock plate; wherein the pressure of the spray tower slurry pump is 18 kg/s; the aperture of a spray sheet of a spray gun head used in the spray drying tower is 1.4mm, and the thickness of a spinning disk of the spray gun head is 6mm; the temperature inside the spray tower was maintained at 380 ℃. The gradation of the blank base powder and the spot powder is as follows: 0.4% of 40 meshes, 6% of 60 meshes, 79.7% of 100 meshes, 13.9% of 120 meshes and 3.5% of water content.
(3) Mixing: simultaneously adding the blank base powder and the spot powder prepared in the step (2) into a drum screen, uniformly mixing the blank base powder and the spot powder through a 60-mesh drum screen, then through a 100-mesh drum screen and a screen mesh, and filtering to obtain blank powder with uniform particles; the mixing mass ratio of the blank-based powder to the spot powder is 9:1.
(4) Pressing: before entering a press, passing the green body powder mixed in the step (3) through a 50-mesh sieve, taking the rest powder, and feeding the rest powder into the press through a pipeline for press forming; the molding pressure is 550kg/cm 2 The forming speed was 11.5 times/min.
(5) And (3) drying: and (5) conveying the green body subjected to the press forming in the step (4) into a drying kiln for drying at the drying temperature of 260 ℃ until the moisture content is less than or equal to 0.3%.
(6) Firing and post-treatment: and (4) feeding the blank dried in the step (5) into a calcining kiln for calcining at 1150-1250 ℃ for 110min, and polishing and waxing after calcining to obtain the nano rock plate with clear particles.
Example 2
A preparation process of a nano rock plate with clear granular sensation comprises the following steps:
(1) Ball-milling powder: respectively and uniformly mixing a powder modifier in the blank-based powder and the spot powder before ball milling, respectively ball milling the blank-based powder and the spot powder mixed with the powder modifier into slurry according to a formula proportion, respectively flowing the obtained slurry into respective slurry pools, uniformly stirring, and ageing for more than 48 hours; wherein, the water content of the slurry obtained by ball milling of the blank-based powder and the spot powder is 50 percent, the flow rate is 24 seconds, the specific gravity is 1.56g/ml, and the fineness of the slurry is 0.7 percent of the rest of a 250-mesh sieve. The using amount of the powder modifier is 1.5 percent of the respective blank base powder and spot powder according to the mass percentage; the powder modifier comprises the following components in a weight ratio of 1:5 sodium polypropylene sulfonate and alkylphenol polyoxyethylene.
(2) Spray drying: respectively feeding the blank slurry and the spot slurry aged in the slurry pool in the step (1) into a spray drying tower through a slurry pump of the spray drying tower, performing spray drying through the spray drying tower to obtain blank-based powder and spot powder, respectively sieving the blank-based powder and the spot powder through a 30-mesh rotary screen, and taking the powder with the surplus of the screen to respectively obtain the blank-based powder and the spot powder with the required grading of the nano rock plate; wherein the pressure of the spray tower slurry pump is 22 kg/s; the diameter of a spray sheet of a spray gun head used in the spray drying tower is 1.3mm, and the thickness of a spinning sheet of the spray gun head is 6mm; the temperature inside the spray tower was maintained at 380 ℃. The gradation of the blank base powder and the spot powder is as follows: 0.3 percent of 40 meshes, 5 percent of 60 meshes, 85 percent of 100 meshes, 9.7 percent of 120 meshes and 3.8 percent of water content.
(3) Mixing: simultaneously adding the blank base powder and the spot powder prepared in the step (2) into a drum screen, uniformly mixing the blank base powder and the spot powder through a 60-mesh drum screen, then through a 100-mesh drum screen and a screen mesh, and filtering to obtain blank powder with uniform particles; the mixing mass ratio of the blank-based powder to the spot powder is 8:1.
(4) Pressing: before entering a press, passing the green body powder mixed in the step (3) through a 50-mesh sieve, taking the rest powder, and feeding the powder into the press through a pipeline for press forming; the molding pressure is 560kg/cm 2 The forming speed was 11.5 times/min.
(5) And (3) drying: and (4) conveying the green body subjected to compression molding in the step (4) into a drying kiln for drying, wherein the drying temperature is 280 ℃, and drying is carried out until the moisture content is less than or equal to 0.3%.
(6) And (3) sintering and post-treatment: and (4) delivering the blank dried in the step (5) into a calcining kiln for calcining at 1150-1250 ℃ for 120min, and polishing and waxing after calcining to obtain the nano rock plate with clear particles, as shown in figure 1.
Example 3
A preparation process of a nano rock plate with clear granular sensation comprises the following steps:
(1) Ball milling powder: respectively ball-milling the blank-based powder and the spot powder into slurry according to a formula ratio, respectively flowing the obtained slurry into respective slurry tanks, uniformly stirring, and aging for more than 48 hours; wherein, the water content of the slurry obtained by ball milling of the blank-based powder and the spot powder is 52 percent, the flow rate is 28 seconds, the specific gravity is 1.55g/ml, and the fineness of the slurry is 0.8 percent of the rest of the 250-mesh sieve.
(2) Spray drying: feeding the blank slurry and the spot slurry aged in the slurry pool in the step (1) into a spray drying tower through a slurry pump of the spray drying tower respectively, performing spray drying through the spray drying tower to obtain blank-based powder and spot powder, respectively sieving the blank-based powder and the spot powder through a 30-mesh rotary screen, and taking the powder with the surplus of the screen to obtain the blank-based powder and the spot powder with the required grading of the nano rock plate respectively; wherein the pressure of the spray tower slurry pump is 18 kg/s; the aperture of a spray sheet of a spray gun head used in the spray drying tower is 1.1mm, and the thickness of a spinning disk of the spray gun head is 8mm; the temperature inside the spray tower was maintained at 450 ℃. The gradation of the blank base powder and the spot powder is as follows: 0.45% of 40 meshes, 6.5% of 60 meshes, 73.4% of 100 meshes, 19.65% of 120 meshes and 3% of water content.
(3) Mixing: simultaneously adding the blank base powder, the spot powder and the powder modifier in the formula amount prepared in the step (2) into a drum screen, uniformly mixing the blank base powder, the spot powder and the powder modifier in the formula amount through the 60-mesh drum screen, then through the 100-mesh drum screen and a screen mesh, and filtering to obtain blank powder with uniform particles; the mixing mass ratio of the blank-based powder to the spot powder is 8:1. according to the mass percentage, the using amount of the powder modifier is 0.8 percent of the total amount of the blank-based powder and the spot powder; the powder modifier comprises the following components in a weight ratio of 1:3 sodium polypropylene sulfonate and alkylphenol polyoxyethylene.
(4) Pressing: before entering a press, passing the green body powder mixed in the step (3) through a 50-mesh sieve, taking the rest powder, and feeding the powder into the press through a pipeline for press forming; the molding pressure is 555kg/cm 2 The forming speed was 11.5 times/min.
(5) And (3) drying: and (4) conveying the green body subjected to compression molding in the step (4) into a drying kiln for drying at the drying temperature of 270 ℃ until the moisture content is less than or equal to 0.3%.
(6) Firing and post-treatment: and (3) delivering the blank dried in the step (5) into a calcining kiln for calcining at 1150-1250 ℃ for 100min, and polishing and waxing after calcining to obtain the nano rock plate with clear particles.
Comparative example 1
Compared with the example 2, the ceramic rock plate of the comparative example 1 has the following differences in the manufacturing process: the screening process in the steps (2), (3) and (4) is lacked, namely the 30-mesh roller screen is not passed through in the step (2), the 60-mesh roller screen is not passed through in the step (3), and then the 100-mesh roller screen is passed through, the 50-mesh screen is not passed through before entering the press in the step (4), and the rest steps and conditions are basically the same as those in the example 2.
Comparative example 2
Compared with the example 2, the ceramic rock plate of the comparative example 2 has the following differences in the manufacturing process: in the step (1), no powder modifier is added, and the rest of the steps and conditions are basically the same as those in the example 2.
Comparative example 3
Compared with the example 2, the ceramic rock plate of the comparative example 3 has the following differences in the manufacturing process: in the step (1), the powder modifier is a single reagent, namely sodium polypropylene sulfonate; the rest of the steps and conditions were substantially the same as in example 2.
Comparative example 4
Compared with the example 2, the ceramic rock plate manufacturing process difference of the comparative example 4 is that: in the step (1), the powder modifier is a single reagent, namely alkylphenol ethoxylates; the rest of the steps and conditions were substantially the same as in example 2.
Comparative example 5
Compared with the example 2, the ceramic rock plate manufacturing process difference of the comparative example 5 is that: in the step (1), the powder modifier is a compound reagent, but the dosage of the powder modifier is 0.5 percent of the mass percentage of the nano rock plate raw material powder; the rest of the steps and conditions were substantially the same as in example 2.
Comparative example 6
Compared with example 2, the ceramic rock plate of comparative example 6 is different in the manufacturing process: in the step (1), the powder modifier is a compound reagent, but the dosage of the powder modifier is 5 percent of the mass percentage of the nano rock plate raw material powder; the remaining steps and conditions were substantially the same as in example 2.
Comparative example 7
Compared with the example 2, the ceramic rock plate manufacturing process difference of the comparative example 7 is that: the spray drying in the step (2) adopts the conventional spray drying condition of the existing ceramic rock plate (the spot granularity is about 30 meshes), namely the aperture of a spray sheet of a spray gun head is 2.8mm, the thickness of a spinning disk of the spray gun head is 4mm, the pressure of a slurry pump of a spray tower is 14 kg/s, and no powder modifier is added; the amount of the green body pigment in the green body powder of comparative example 7 was 3 times the amount of the green body pigment in the green body powder of example 2, and the remaining steps and conditions were substantially the same as those of example 2, to obtain a conventional ceramic rock plate, as shown in FIG. 2.
After the spray drying in the step (2) of the comparative example, the moisture content of the obtained powder is 5.5%, and the gradation is as follows: 4% of 40 meshes, 53.4% of 60 meshes, 41.3% of 100 meshes and 1.3% of 120 meshes.
Evaluation of Effect and detection of Performance
The flexural strength, the surface particle dispersion density and the blank defects of the ceramic rock plates prepared in the examples 1 to 3 and the comparative examples 1 to 7 are detected, wherein the flexural strength is detected according to the GB/T4100-2015 standard, the surface particle dispersion density is represented by a grade of 1 to 5, and the grade 1 represents that the surface particles are relatively loose but have agglomeration; grade 5 indicates that the particles are uniformly distributed and have no agglomeration, and the higher the grade number is, the more uniform the particle distribution is, the less agglomeration is, and the higher the particle definition is. The blank defects refer to the phenomena of layering, cracking, pinholes on the surface and the like of the finished blank. The test items and results are shown in table 1 below.
Table 1 shows the data of the performance test of the ceramic rock plates of each example
As shown in the above table, the nano rock plate prepared in examples 1 to 3 has excellent yield in flexural strength and surface particle dispersion density, and the spots on the nano rock plate have clear and fine particle sense and transparent texture.
Compared with the example 2, the ceramic rock plate of the comparative example 1 has the following differences in the manufacturing process: the screening process in the steps (2), (3) and (4) is absent, namely the powder contains part of undersize particles, so that part of small spots can be blurred and unclear, in addition, the powder also contains part of larger particles, so that part of spots are the same as spots of conventional products and have no greasy feeling, and the two spots with different sizes on the ceramic rock plate are integrally mixed together, so that the sizes of the whole spots are uneven and the fineness is poor.
Compared with the example 2, the ceramic rock plate of the comparative example 2 has the following differences in the manufacturing process: in the step (1), no powder modifier is added, green body powder is agglomerated due to self weight accumulation and transfer friction, or fine powder is agglomerated due to the fact that the fine powder has water and has viscosity, so that spots on the ceramic rock plate are increased in granularity and are not uniformly distributed, and the definition and the fineness of the spots are influenced.
Compared with example 2, the ceramic rock plate manufacturing process of comparative examples 3 to 4 is different in that: the powder modifier in the step (1) is a single reagent, and the single powder modifier reduces the powder agglomeration phenomenon to a certain extent, but still influences the definition and the fineness of spot particles.
Compared with the example 2, the ceramic rock plate manufacturing process difference of the comparative examples 5 to 6 is that: in the step (1), the powder modifier is a compound reagent, but the dosage of the powder modifier is 0.5 percent or 5 percent of the mass percentage of the nano rock plate raw material powder; the compound reagent reduces the agglomeration phenomenon of powder to a certain extent, but the dosage of the compound reagent still influences the definition and the fineness of spot particles.
Compared with example 2, the ceramic rock plate of comparative example 7 has the following differences: the spray drying in the step (2) adopts the conventional spray drying condition of the existing ceramic rock plate (the spot granularity is about 30 meshes), namely the aperture of a spray sheet of the spray gun head is 2.8mm, the thickness of a spinning sheet of the spray gun head is 4mm, and the pressure of a slurry pump of a spray tower is 14 kg/s; and no powder modifier is added. The spot granularity of the whole body blank of the existing ceramic rock plate is larger, and the integral texture can not reach the fineness and the definition required by the invention.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (10)
1. A preparation process of a nano rock plate with clear granular sensation is characterized by comprising the following steps:
(1) Ball-milling powder: respectively ball-milling the blank-based powder and the spot powder into slurry according to a formula ratio, respectively flowing the obtained slurry into respective slurry tanks, uniformly stirring, and aging for more than 48 hours;
(2) Spray drying: respectively feeding the blank slurry and the spot slurry aged in the slurry pool in the step (1) into a spray drying tower through a slurry pump of the spray drying tower, performing spray drying through the spray drying tower to obtain blank-based powder and spot powder, respectively sieving the blank-based powder and the spot powder through a 30-mesh rotary screen, and taking the powder with the surplus of the screen to respectively obtain the blank-based powder and the spot powder with the required grading of the nano rock plate;
(3) Mixing: simultaneously adding the blank base powder and the spot powder prepared in the step (2) into a drum screen, uniformly mixing the blank base powder and the spot powder through a 60-mesh drum screen, then through a 100-mesh drum screen and a screen mesh, and filtering to obtain blank powder with uniform particles;
in the step (1) or (3), a step of adding a powder modifier is further included; in the step (1), before ball milling, powder modifier is respectively and uniformly mixed in the blank base powder and the spot powder, and the dosage of the powder modifier is 1-3% of the blank base powder and the spot powder respectively according to mass percentage; in the step (3), the powder modifier, the blank-based powder and the spot powder are simultaneously added into a drum screen to be mixed, and the amount of the powder modifier is 0.5-1% of the total amount of the blank-based powder and the spot powder in percentage by mass;
(4) Pressing: before entering a press, passing the green body powder mixed in the step (3) through a 50-mesh sieve, taking the rest powder, and feeding the powder into the press through a pipeline for press forming;
(5) And (3) drying: conveying the green body pressed and formed in the step (4) into a drying kiln for drying;
(6) And (3) firing: and (4) feeding the blank dried in the step (5) into a calcining kiln for calcining to obtain the nano rock plate with clear particles.
2. The process for preparing nano rock plate with clear granular sensation according to claim 1, wherein in the step (1), the blank-based powder material is prepared from the following components in parts by weight: 10-30 parts of potassium-sodalite particles, 5-15 parts of potassium sand, 5-15 parts of ultra-white stone particles, 1-10 parts of strong plastic sand, 10-30 parts of selected sand, 15-30 parts of kaolin, 10-20 parts of high-white kaolin, 1-10 parts of high-alumina powder, 1-10 parts of high clay, 5-15 parts of Fubai sand, 0.1-5 parts of raw talc, 0.1-1.5 parts of dispergator, 0.1-2 parts of reinforcing agent and 0-5 parts of pigment for blank;
the spot powder is prepared from the following components in parts by weight: 10-30 parts of potassium-sodalite particles, 5-15 parts of potassium sand, 5-15 parts of ultra-white stone particles, 1-10 parts of strong plastic sand, 10-30 parts of selected sand, 15-30 parts of kaolin, 10-20 parts of high-white kaolin, 1-10 parts of high-alumina powder, 1-10 parts of high clay, 5-15 parts of Fubai sand, 0.1-5 parts of raw talc, 0.1-1.5 parts of dispergator, 0.1-2 parts of reinforcing agent and 0-5 parts of pigment for blank;
wherein, the water content of the slurry obtained by ball milling of the blank-based powder and the spot powder is 48-52%, the flow rate is 10-30 seconds, the specific gravity is 1.40-1.60g/ml, and the fineness of the slurry is 0.6-0.8% of the rest of the 250-mesh sieve.
3. The process for preparing nano rock plate with clear granular sensation according to claim 1, wherein in the step (2), the pressure of the spray tower mud pump is 18-22 kg/s; the diameter of a spray sheet of a spray gun head used in the spray drying tower is 1.1-1.4mm, and the thickness of a spinning sheet of the spray gun head is 6-8mm; the temperature in the spray tower is maintained at 380-450 ℃.
4. The process for preparing nano rock plate with clear granular sensation according to claim 1, wherein in the step (2), the base powder and the spot powder are both graded as follows: less than 0.5 percent of 40 meshes, 5-7 percent of 60 meshes, 70-85 percent of 100 meshes, 9-20 percent of 120 meshes and 3-4 percent of water content.
5. The process for preparing nano rock plate with clear granular sensation according to claim 1, wherein in the step (3), the mixing mass ratio of the blank-based powder to the spot powder is (7-9): 1.
6. the process for preparing nano rock plate with clear granular sensation according to claim 1, wherein in the step (1) or (3), the powder modifier comprises the components with weight ratio of 1: (2-5) sodium polypropylene sulfonate and alkylphenol ethoxylates.
7. The process for preparing nano rock plate with clear granular sensation according to claim 1, wherein in the step (4), the forming pressure is 550-560kg/cm 2 The forming speed was 11.5 times/min.
8. The process for preparing nano rock plate with clear granular sensation according to claim 1, wherein in the step (5), the drying temperature is 250-300 ℃, and the drying is carried out until the moisture content is less than or equal to 0.3%.
9. The process for preparing a nano rock plate with a sharp granular sensation according to claim 1, wherein in the step (6), the calcination temperature is 1150-1250 ℃ and the calcination time is 90-120min.
10. A nano-rock plate with a distinct granular sensation, which is prepared by the process for preparing a nano-rock plate according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211635310.1A CN115677325B (en) | 2022-12-19 | 2022-12-19 | Preparation technology of ceramic rock plate with clear granular sense and ceramic rock plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211635310.1A CN115677325B (en) | 2022-12-19 | 2022-12-19 | Preparation technology of ceramic rock plate with clear granular sense and ceramic rock plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115677325A true CN115677325A (en) | 2023-02-03 |
| CN115677325B CN115677325B (en) | 2023-06-23 |
Family
ID=85056640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211635310.1A Active CN115677325B (en) | 2022-12-19 | 2022-12-19 | Preparation technology of ceramic rock plate with clear granular sense and ceramic rock plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115677325B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015105217A (en) * | 2013-12-02 | 2015-06-08 | 国立大学法人 名古屋工業大学 | Dispersion processing method of nanoparticle slurry by coarse particle addition |
| KR101577657B1 (en) * | 2014-08-29 | 2015-12-28 | 주식회사 네오엔비즈 | Surface-modified nanodiamond, method of modifying a surface of a nanodiamond, and method of preparing nanodiamond dispersion |
| CN107129283A (en) * | 2017-05-12 | 2017-09-05 | 南京工业大学 | A kind of photocuring 3D printing high solid loading ceramic slurry and its preparation technology |
| CN107244875A (en) * | 2017-05-18 | 2017-10-13 | 深圳市博之雅新材料科技有限公司 | It is new to prevent returning halogen fire-proof plate |
| CN113979789A (en) * | 2021-11-29 | 2022-01-28 | 广东金牌陶瓷有限公司 | Preparation process of golden velvet texture ceramic rock plate and ceramic rock plate |
| CN114105613A (en) * | 2021-12-10 | 2022-03-01 | 广东嘉联企业陶瓷有限公司 | Large-particle spot fully-permeable ceramic rock plate and manufacturing process thereof |
| CN114853459A (en) * | 2022-05-18 | 2022-08-05 | 东莞市唯美陶瓷工业园有限公司 | Preparation method of granite spot brick and granite spot brick |
| CN115124322A (en) * | 2022-07-18 | 2022-09-30 | 广东嘉联企业陶瓷有限公司 | Light-transmitting white stone rock plate and production process thereof |
| CN115385657A (en) * | 2022-07-18 | 2022-11-25 | 广东嘉联企业陶瓷有限公司 | Ultra-thin rock plate with embossment texture |
-
2022
- 2022-12-19 CN CN202211635310.1A patent/CN115677325B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015105217A (en) * | 2013-12-02 | 2015-06-08 | 国立大学法人 名古屋工業大学 | Dispersion processing method of nanoparticle slurry by coarse particle addition |
| KR101577657B1 (en) * | 2014-08-29 | 2015-12-28 | 주식회사 네오엔비즈 | Surface-modified nanodiamond, method of modifying a surface of a nanodiamond, and method of preparing nanodiamond dispersion |
| CN107129283A (en) * | 2017-05-12 | 2017-09-05 | 南京工业大学 | A kind of photocuring 3D printing high solid loading ceramic slurry and its preparation technology |
| CN107244875A (en) * | 2017-05-18 | 2017-10-13 | 深圳市博之雅新材料科技有限公司 | It is new to prevent returning halogen fire-proof plate |
| CN113979789A (en) * | 2021-11-29 | 2022-01-28 | 广东金牌陶瓷有限公司 | Preparation process of golden velvet texture ceramic rock plate and ceramic rock plate |
| CN114105613A (en) * | 2021-12-10 | 2022-03-01 | 广东嘉联企业陶瓷有限公司 | Large-particle spot fully-permeable ceramic rock plate and manufacturing process thereof |
| CN114853459A (en) * | 2022-05-18 | 2022-08-05 | 东莞市唯美陶瓷工业园有限公司 | Preparation method of granite spot brick and granite spot brick |
| CN115124322A (en) * | 2022-07-18 | 2022-09-30 | 广东嘉联企业陶瓷有限公司 | Light-transmitting white stone rock plate and production process thereof |
| CN115385657A (en) * | 2022-07-18 | 2022-11-25 | 广东嘉联企业陶瓷有限公司 | Ultra-thin rock plate with embossment texture |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115677325B (en) | 2023-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107756608B (en) | Dry particle glaze cloth stone-like brick and preparation method thereof | |
| CN107935386B (en) | Granular dry particle glaze, granular dry particle glaze cloth stone-like brick and preparation method thereof | |
| WO2017133080A1 (en) | Low-shrinkage, high-strength, and large ceramic plate and manufacturing method thereof | |
| CN109927161B (en) | Full-through micro-powder intelligent multi-tube distribution ceramic tile and preparation method thereof | |
| CN102476183B (en) | Preparation method for flake-like aluminium powder pigment | |
| CN109849163B (en) | Stereoscopic glazed brick prepared from edge scraping waste and manufacturing method thereof | |
| CN113400442B (en) | Method for manufacturing glazed tile by using solid powder | |
| CN107685383A (en) | A kind of production technology of Antique Imitation Tiles ceramics | |
| CN111574228A (en) | Whole-body-effect dry-particle ink-jet stone-like brick and preparation method thereof | |
| CN110104952A (en) | A kind of super abrasive Dali stone ceramic tile formula and processing technology | |
| CN107116675A (en) | Dry method illusion-colour particle, Ceramic Tiles of micro mist composite decoration and preparation method thereof | |
| CN113307604A (en) | Preparation method of dark granite ceramic tile and dark granite ceramic tile | |
| CN113800768B (en) | Dry-method particle glaze for ceramic rock plate and preparation method and application thereof | |
| CN101328078B (en) | Special glaze-coated sand process of high strength porcelain insulator | |
| CN115677325A (en) | Preparation process of nano rock plate with clear granular sensation and nano rock plate | |
| CN109455750A (en) | A kind of modified abrasive light calcium and preparation method thereof | |
| CN115849870B (en) | Spot powder for nanometer Dan Yanban and preparation method thereof | |
| KR101100619B1 (en) | A method of pcc with new form and a method of control for particle | |
| CN112897936A (en) | Artificial quartz stone line board and preparation method thereof | |
| CN112300776A (en) | Fracturing propping agent with corundum-anorthite as main crystal phase and preparation method thereof | |
| CN109678499A (en) | A method of using clout prepare in density high-strength multipurpose zirconium silicate compounded microbeads | |
| CN116041040A (en) | Powder preparation process for improving utilization rate of nano Dan Yanban powder | |
| CN106866160B (en) | Natural stone imitation polished brick and preparation process thereof | |
| US2934455A (en) | Process for coloring coarse aggregate | |
| CN114804630B (en) | Dry grain, dry grain glaze, high-hardness high-wear-resistance rock plate and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |