CN111018503B - Ceramic sheet with high-strength green body and preparation method thereof - Google Patents
Ceramic sheet with high-strength green body and preparation method thereof Download PDFInfo
- Publication number
- CN111018503B CN111018503B CN201911329174.1A CN201911329174A CN111018503B CN 111018503 B CN111018503 B CN 111018503B CN 201911329174 A CN201911329174 A CN 201911329174A CN 111018503 B CN111018503 B CN 111018503B
- Authority
- CN
- China
- Prior art keywords
- green body
- ceramic sheet
- strength
- parts
- percent
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/602—Making the green bodies or pre-forms by moulding
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
Abstract
The invention discloses a preparation method of a ceramic sheet with a high-strength green body, which comprises the following process steps: 1) ball-milling the raw material components by a wet method according to the weight parts of the raw materials to obtain mixed slurry with the solid content of 55-59%; 2) mixing the slurry to obtain green body powder with the water content of 10-16%; 3) pressing and molding the green body powder material by a press to obtain a green body, and drying to obtain a high-strength ceramic sheet dry blank; 4) and firing and forming the high-strength ceramic sheet dry blank to obtain a ceramic sheet finished product. The invention effectively reduces the demand of high-quality clay raw materials in the formula, uses the volcanic ash to replace the high-quality clay raw materials as the main plastic raw materials, not only reduces the prepared finished products, but also ensures that the green strength of the prepared ceramic sheet is improved by over 100 percent and the dry strength is improved by over 200 percent through the special selection and the proportion of the specific raw material components, and the performance of the finished product is superior to the national standard requirement.
Description
Technical Field
The invention relates to the technical field of architectural ceramics, in particular to a ceramic sheet with a high-strength green body and a preparation method thereof.
Background
The innovation is open, the national economy of China is rapidly developed, the living standard of people is obviously improved, and a large amount of building ceramics are consumed in the process. High-quality clay resources are required to be consumed in the production process of the building ceramics, and according to statistics, the amount of high-quality clay consumed by the building ceramics in China is about 6000 million tons every year. The large-scale clay consumption not only destroys the environment, but also reduces the high-quality clay resources in China. Therefore, under the important strategic background of the nation that vigorously builds resource-saving and environment-friendly society, the main direction of the development of the building ceramics is to reduce the consumption of the clay and the thickness of the green body. As high-quality clay resources are gradually reduced, people have to use clay containing more barren materials, the plasticity of a formed blank is poor, the strength of the green blank and a dry blank is low, the product is easy to have the defects of edge deletion, corner falling, cracks and the like, and the production process requirement is difficult to achieve even if the forming pressure is increased. If improvement measures are taken with properly thinned ceramic products, the chance of damage or cracking during transport and use is greatly increased due to the thinness and low strength. However, along with the trend that the specifications of ceramic products are larger and thinner, how to improve the strength of the ceramic sheet blank is very important for the production of the ceramic sheet. At present, two methods are mainly used for improving the strength of a ceramic sheet blank: one method is to select high-quality clay and increase the clay consumption, so that not only more high-quality clay needs to be consumed, but also the exhaustion of high-quality clay resources is accelerated, and the raw material cost is increased; and the other method is to select a high-quality green body reinforcing agent to reduce the using amount of clay, and although the green body strength is improved, the improvement range is limited, and the manufacturing cost is also improved.
So far, there are patents related to the reinforcement of ceramic thin plate green body in the prior art: "a high-efficient ceramic body reinforcing agent and its preparation method and application" (CN105777142B), "a ceramic water reducing agent with body reinforcing effect and its preparation method" (CN106046275B), "a preparation method of ceramic body reinforcing agent with de-coagulation effect to slurry and its product application method" (CN107459358B), "a ceramic body reinforcing agent and its application" (CN102584253B), "a preparation method of modified polyvinyl alcohol copolymer cross-linking type ceramic body reinforcing agent" (CN105859945A), etc. In the patent technologies, an organic green body reinforcing agent synthesized by using organic materials is used, although the strength of a ceramic green body is increased by 30-80%, the amount of high-quality clay used is not reduced, and the synthesis cost of the reinforcing agent material is high, so that the wide application of the ceramic sheet is restricted.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned disadvantages of the prior art and providing a ceramic sheet having a high-strength green compact and a method for manufacturing the same.
The technical scheme adopted by the invention is as follows: a ceramic sheet with a high-strength green body comprises the following components in parts by weight: 30-55 parts of volcanic ash, 10-30 parts of potassium feldspar, 10-30 parts of albite, 15-25 parts of quartz, 2-4 parts of calcined alumina, 0.1-2 parts of a dispersing agent and 0.1-3 parts of sodium carboxymethylcellulose.
Specifically, the volcanic ash is taken as the main material, potassium feldspar, albite and quartz are taken as the auxiliary materials, and four non-clay raw materials are taken as the main materials of the ceramic sheet, so that the requirement for calcining alumina, namely the clay raw material, in the whole formula is greatly reduced. In other words, the volcanic ash with abundant reserves and low price is introduced to replace the high-quality clay raw material as the main plastic raw material, so that the raw material cost for producing the ceramic sheet is reduced, and the ecological problem of rapid depletion caused by disordered development of the high-quality clay is solved.
Meanwhile, China is a country with rich volcanic resources, is most abundant in northern China, particularly in Changbai mountain areas of Jilin province, and has better quality. The volcanic ash of Jilin is distributed in eight city and county areas such as Gainan, Jingyu, Kangsong, Changbai, Antu, Longjing, Hengjiang and Liuhe. The area with volcanic ash is about 6 ten thousand square kilometers, the volcanic ash covering thickness can reach more than forty meters, and the reserves are huge. Meanwhile, the volcanic ash of Jilin contains components such as high-activity silica, active alumina, calcium hydroxide and nontronite, and has the characteristics of light weight, developed pore structure, high specific surface area, outstanding adsorption performance and the like. When free moisture exists, the active silicon dioxide and the active aluminum oxide respectively react with calcium hydroxide in the drying process to generate reaction products such as calcium silicate hydrate, aluminum aluminate hydrate and the like, so that the powder material taking the volcanic ash as the main raw material can be subjected to semi-dry pressing forming to obtain a high-strength green blank and a high-strength dry blank. Meanwhile, the phase of the nontronite in the volcanic ash has the similar property with montmorillonite, is a clay mineral and has the characteristics of plasticity, water absorption expansion, syneresis and the like. Therefore, the volcanic ash can not only replace the clay raw material plasticity function, but also well enhance the green body.
As a further improvement of the scheme, the invention preferably adopts the Guilin volcanic ash, and the chemical composition of the Guilin volcanic ash is 65-68% of SiO by weight percentage211 to 13% of Al2O30.2-0.8% of Fe2O30.01 to 0.05% of TiO21 to 2% CaO, 1.5 to 2.5% MgO, 1.5 to 2.5% K2O, 2-4% of Na2O, 12.5-14% of loss on ignition. Further, the specific surface area of the volcanic ash is 40-70 m2A pore volume of 0.05 to 0.2cm, an average pore diameter of 3 to 10mm, and a pore volume of3Per g, it and other sourcesThe material has good adaptability and simultaneously shows excellent processing performance in the production process.
As a further improvement of the above scheme, the dispersant is selected from one of sodium phosphate, sodium hexametaphosphate, sodium tripolyphosphate and sodium polyacrylate, and after being dissolved in water, the dispersant is ionized into ions and adsorbed on the particle surface, so that an electric double layer structure is formed on the particle surface, the surface charge density is improved, and the van der waals attraction force between particles is overcome through the repulsion effect of the same kind of charges on the surface, and the dispersing effect is realized.
As a further improvement of the scheme, the thickness of the ceramic sheet is 3.0-6.0 mm, which accords with the trend that the ceramic product is thinner, and further plays a role in energy conservation and consumption reduction.
A method for preparing a ceramic sheet having a high-strength green body as described above, comprising the process steps of:
1) putting the raw material components in parts by weight into a ball mill, uniformly mixing, and performing wet ball milling for 0.5-24 h to obtain mixed slurry with the solid content of 55-59%;
2) sieving, aging, removing iron and spray drying the mixed slurry to obtain green body powder with the water content of 10-16%;
3) pressing and molding the green body powder material by a press to obtain a green body, and drying to obtain a high-strength ceramic sheet dry blank;
4) and (3) performing base glaze distribution, ink-jet decoration and surface glaze distribution on the surface of the high-strength ceramic thin plate dry blank, firing and forming, and then cooling, edging, polishing and waxing to obtain a ceramic thin plate finished product.
The volcanic ash has stronger plasticity, but the pore volume of the nano-pores contained in the volcanic ash is large, and a large amount of free water can be adsorbed in capillary pores, so that the phenomena of strong water absorption capacity and remarkably reduced solid content of the ceramic mixed slurry are caused. In the existing production technology of ceramic tiles, the ceramic mixed slurry with low solid content needs to be spray-dried into ceramic green body powder with the water content of 5.0-7.0% to meet the requirement of subsequent forming processing, so that the production energy consumption is greatly increased. Therefore, volcanic ash is not suitable as one of the main raw materials in the existing ceramic tile production technology. In fact, however, although the solid content of the ceramic slurry is significantly reduced by replacing the high-quality clay raw material with the volcanic ash, since the binding force of the free water adsorbed in the capillary in the volcanic ash is strong, most of the free water is firmly adsorbed in the capillary in the spray granulation process, and thus the volcanic ash adsorbed with a large amount of free water does not cause the disadvantage of poor dispersion performance of the ceramic green powder. The invention creatively adopts green body powder with the water content of 55-59% to perform compression molding, and free water adsorbed in capillaries in volcanic ash is extruded out in the compression process to cause a mucosa phenomenon, so as to obtain the high-strength ceramic sheet green body.
Specifically, the specific surface area of the green powder of the common ceramic sheet is 2-10 m2The volcanic ash is used as a main plastic raw material, so that green powder with a specific surface area larger than that of a common ceramic sheet can be obtained. Under the same forming pressure, the atomic attraction of the surface of the green compact powder particles with large specific surface area is larger than that of the surface of the ordinary green compact powder particles, so that the green compact strength can be improved; meanwhile, in the drying process, water slowly evaporated from capillaries of green body powder with large specific surface area reacts with active silicon dioxide and active aluminum oxide in the powder to generate reaction products such as calcium silicate hydrate and aluminum aluminate hydrate, so that the strength of the dried dry body is greatly improved. As a further improvement of the scheme, the specific surface area of the green body powder in the step 2) of the invention is 15-35 m2The specific surface area is much larger than that of common green powder, so that the green strength of the ceramic sheet is greatly improved.
As a further improvement of the scheme, the grain composition of the green body powder in the step 2) is controlled to be more than 20 meshes of grains and less than or equal to 1 percent, more than 40 percent and less than or equal to 40 meshes of grains and less than or equal to 60 percent, and less than 100 meshes of grains and less than or equal to 4.5 percent. Specifically, the raw materials with reasonable grain composition have uniform compactness and basically the same shrinkage rate at each part of the molded blank, and each part has substantially equivalent change condition after drying, so that drying cracks are not easy to generate.
As a further improvement of the scheme, the firing temperature of the firing forming in the step 4) is 1185-1215 ℃, and the firing time is 90-120 min. Specifically, the limitation of the firing forming process parameters not only enables the ceramic sheet to be fully densified, but also can promote the formation of mullite phases and further improve the strength of the mullite phases.
The invention has the beneficial effects that:
the invention effectively reduces the demand of high-quality clay raw materials in the formula, uses the volcanic ash to replace the high-quality clay raw materials as the main plastic raw materials, not only reduces the preparation of finished products, but also ensures that the green strength of the prepared ceramic sheet is improved by over 100 percent and the dry strength is improved by over 200 percent through the special selection and the proportion of the specific raw material components, and the performance of the finished products is superior to the national standard requirement.
The preparation method disclosed by the invention is simple in process, strong in controllability and beneficial to large-scale industrial production.
Detailed Description
The present invention is specifically described below with reference to examples in order to facilitate understanding of the present invention by those skilled in the art. It should be particularly noted that the examples are given solely for the purpose of illustration and are not to be construed as limitations on the scope of the invention, as non-essential improvements and modifications to the invention may occur to those skilled in the art, which fall within the scope of the invention as defined by the appended claims. Meanwhile, the raw materials mentioned below are not specified in detail and are all commercial products; the process steps or preparation methods not mentioned in detail are all process steps or preparation methods known to the person skilled in the art.
Example 1
A ceramic thin plate with a high-strength green body is 5.5mm thick and comprises the following components in parts by weight: 40 parts of volcanic ash, 25 parts of potassium feldspar, 15 parts of albite, 18 parts of quartz, 2 parts of calcined alumina, 2 parts of sodium tripolyphosphate dispersing agent and 0.5 part of sodium carboxymethylcellulose.
Wherein the chemical composition of the volcanic ash is 68 percent of SiO in percentage by weight211% of Al2O30.8% of Fe2O30.01% of TiO22% of CaO, 1.5% of MgO and 2.5% of K2O, 2% of Na2O, loss on ignition of 13%; the specific surface area of the volcanic ash is 41.3m2G, average pore diameter of 3.1mm, pore volume of 0.07cm3/g。
The preparation method comprises the following steps:
1) putting the raw material components in parts by weight into a ball mill, uniformly mixing, and performing wet ball milling for 24 hours to obtain mixed slurry with the solid content of 58.2%;
2) sieving, aging, removing iron, and spray drying to obtain slurry with water content of 13.5% and specific surface area of 20m2The raw blank powder per gram is prepared by controlling the grain composition of the raw blank powder to be 0.5 percent of grains with more than 20 meshes, 56.2 percent of grains with more than 40 meshes and 3.9 percent of grains with less than 100 meshes;
3) pressing and molding the green body powder material by a press to obtain a green body, and drying to obtain a high-strength ceramic sheet dry blank;
4) and (3) performing ground glaze distribution, ink-jet decoration and surface glaze distribution on the surface of the high-strength ceramic sheet dry blank, then performing firing molding at the firing temperature of 1190 ℃ for 120min, and then performing cooling, edge grinding, polishing and waxing to obtain the finished ceramic sheet of example 1.
10 parts of each of the samples of the ceramic sheet products of example 1 was subjected to a performance test, and the test results showed that the high-strength green ceramic sheet had an average flexural strength of 0.9MPa, the dry green had an average flexural strength of 3.5MPa, and the fired products had an average flexural strength of 42.5 MPa.
Comparative example 1
The common ceramic sheet is 5.5mm thick and comprises the following components in parts by weight: 25 parts of kaolin, 5 parts of ball clay, 10 parts of bentonite, 25 parts of potassium feldspar, 15 parts of albite, 18 parts of quartz, 2 parts of calcined alumina, 2 parts of sodium tripolyphosphate dispersing agent and 0.5 part of sodium carboxymethylcellulose.
The preparation method comprises the following steps:
1) putting the raw material components in parts by weight into a ball mill, uniformly mixing, and performing wet ball milling for 24 hours to obtain mixed slurry with the solid content of 61.5%;
2) sieving the mixed slurry and ageingRotting, removing iron and spray drying to obtain the product with the water content of 5.5 percent and the specific surface area of 5.4m2Per gram of green body powder, and meanwhile, the grain composition of the green body powder is controlled to be more than 20 meshes of grains accounting for 0.3 percent, more than 40 meshes of grains accounting for 54.2 percent, and less than 100 meshes of grains accounting for 4.3 percent;
3) pressing and molding the green body powder material by a press to obtain a green body, and drying to obtain a dry ceramic sheet blank;
4) and (3) performing ground glaze distribution, ink-jet decoration and surface glaze distribution on the surface of the dry ceramic sheet blank, firing at 1190 ℃ for 90min for molding, cooling, edging, polishing and waxing to obtain the finished ceramic sheet product of the comparative example 1.
The test results of 10 parts of the finished ceramic sheet samples in comparative example 1 were measured to determine the average breaking strength of the green ceramic sheet of 0.4MPa, the average breaking strength of the dried ceramic sheet of 1.1MPa, and the average breaking strength of the fired ceramic sheet of 39.5MPa, which are significant reductions in the respective properties compared with the test data in example 1.
Example 2
A ceramic sheet with a high-strength green body is 4.5mm thick and comprises the following components in parts by weight: 30 parts of volcanic ash, 30 parts of potassium feldspar, 10 parts of albite, 25 parts of quartz, 2 parts of calcined alumina, 0.1 part of sodium hexametaphosphate dispersant and 3 parts of sodium carboxymethylcellulose.
Wherein the chemical composition of the volcanic ash is 66.4 percent of SiO in percentage by weight212.3% of Al2O30.5% of Fe2O30.03% of TiO21.2% of CaO, 2.1% of MgO and 2.5% of K2O, 3.5% of Na2O, loss on ignition of 12.5%; the specific surface area of the volcanic ash is 59.6m2G, average pore diameter of 10.2mm, pore volume of 0.19cm3/g。
The preparation method comprises the following steps:
1) putting the raw material components in parts by weight into a ball mill, uniformly mixing, and performing wet ball milling for 0.5h to obtain mixed slurry with the solid content of 55.3%;
2) sieving the mixed slurry, aging, removing iron, and sprayingDrying to obtain a specific surface area of 15m with a water content of 16%2The raw material powder per gram is prepared by controlling the grain composition of the raw material powder to be 0.7 percent of grains with more than 20 meshes, 56.9 percent of grains with more than 40 meshes and 4.2 percent of grains with less than 100 meshes;
3) pressing and molding the green body powder material by a press to obtain a green body, and drying to obtain a high-strength ceramic sheet dry blank;
4) and (3) performing ground glaze distribution, ink-jet decoration and surface glaze distribution on the surface of the high-strength ceramic sheet dry blank, then performing firing molding at the firing temperature of 1215 ℃ for 90min, and then performing cooling, edge grinding, polishing and waxing to obtain the finished ceramic sheet product of the example 2.
The test results of the performance tests of 10 parts of the finished ceramic sheet samples of example 2 showed that the high-strength green ceramic sheet had an average flexural strength of 0.85MPa, the dry green had an average flexural strength of 3.2MPa, and the fired finished ceramic sheet had an average flexural strength of 44.3 MPa.
Example 3
A ceramic thin plate with a high-strength green body is 3.5mm thick and comprises the following components in parts by weight: 55 parts of volcanic ash, 10 parts of potassium feldspar, 30 parts of albite, 15 parts of quartz, 4 parts of calcined alumina, 2 parts of sodium polyacrylate dispersant and 0.1 part of sodium carboxymethylcellulose.
Wherein the chemical composition of the volcanic ash is 65.2 percent of SiO in percentage by weight212.9% of Al2O30.3% of Fe2O30.03% of TiO21.1% CaO, 2.4% MgO, 2.4% K2O, 3.8% of Na2O, loss on ignition of 13.9%; the specific surface area of the volcanic ash is 68.8m2A pore volume of 0.1cm, an average pore diameter of 5mm, and a pore volume of3/g。
The preparation method comprises the following steps:
1) putting the raw material components in parts by weight into a ball mill, uniformly mixing, and performing wet ball milling for 12 hours to obtain mixed slurry with the solid content of 56%;
2) sieving, aging, removing iron, and spray drying to obtain slurry with water content of 10% and specific surface area of 35m2Raw material of/gThe green body powder material, the grain composition of the green body powder material is controlled to be more than 20 meshes of grains accounting for 0.3 percent, more than 40 meshes of grains accounting for 50 percent and less than 100 meshes of grains accounting for 4 percent;
3) pressing and molding the green body powder by a press to obtain a green body, and drying to obtain a high-strength ceramic sheet dry blank;
4) and (3) performing ground glaze laying, ink-jet decoration and surface glaze laying on the surface of the high-strength ceramic sheet dry blank, then performing firing molding at the firing temperature of 1185 ℃ for 120min, and then performing cooling, edge grinding, polishing and waxing to obtain the ceramic sheet finished product in the example 3.
The test results of the performance tests of 10 parts of the finished ceramic sheet samples of example 3 showed that the high-strength green ceramic sheet had an average flexural strength of 0.93MPa, the dry green had an average flexural strength of 3.4MPa, and the fired finished ceramic sheet had an average flexural strength of 44.1 MPa.
The above embodiments are preferred embodiments of the present invention, and all similar processes and equivalent variations to those of the present invention should fall within the scope of the present invention.
Claims (6)
1. A ceramic sheet with a high-strength green body is characterized by comprising the following components in parts by weight: 30-55 parts of volcanic ash, 10-30 parts of potassium feldspar, 10-30 parts of albite, 15-25 parts of quartz, 2-4 parts of calcined alumina, 0.1-2 parts of a dispersing agent and 0.1-3 parts of sodium carboxymethylcellulose; the volcanic ash is Jilin volcanic ash, and the chemical components of the volcanic ash are 65-68% of SiO (silicon dioxide) in percentage by weight211 to 13% of Al2O30.2 to 0.8% of Fe2O30.01 to 0.05% of TiO21 to 2% CaO, 1.5 to 2.5% MgO, 1.5 to 2.5% K2O, 2-4% of Na2O, 12.5-14% of loss on ignition; the specific surface area of the volcanic ash is 40-70 m2A pore volume of 0.05 to 0.2cm, an average pore diameter of 3 to 10mm3/g。
2. The ceramic sheet having a high strength green body as set forth in claim 1, wherein: the dispersing agent is selected from one of sodium phosphate, sodium hexametaphosphate, sodium tripolyphosphate and sodium polyacrylate.
3. The ceramic sheet having a high strength green body as set forth in claim 1, wherein: the thickness of the ceramic thin plate is 3-6 mm.
4. A method for producing a ceramic sheet having a high-strength green body according to any one of claims 1 to 3, comprising the steps of:
1) putting the raw material components in parts by weight into a ball mill, uniformly mixing, and performing wet ball milling for 0.5-24 h to obtain mixed slurry with the solid content of 55-59%;
2) sieving, aging, removing iron and spray drying the mixed slurry to obtain green body powder with the water content of 10-16%; the specific surface area of the green body powder is 15-35 m2/g；
3) Pressing and molding the green body powder material by a press to obtain a green body, and drying to obtain a high-strength ceramic sheet dry blank;
4) and (3) performing base glaze distribution, ink-jet decoration and surface glaze distribution on the surface of the high-strength ceramic thin plate dry blank, firing and forming, and then cooling, edging, polishing and waxing to obtain a ceramic thin plate finished product.
5. The method of manufacturing a ceramic sheet having a high strength green body as set forth in claim 4, wherein: the grain composition of the green body powder in the step 2) is controlled to be more than 20 meshes and less than or equal to 1 percent, more than 40 percent and less than or equal to 40 meshes and less than or equal to 60 percent, and less than 100 meshes and less than or equal to 4.5 percent.
6. The method of manufacturing a ceramic sheet having a high strength green body as set forth in claim 4, wherein: the firing temperature of the firing forming in the step 4) is 1185-1215 ℃, and the firing time is 90-120 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329174.1A CN111018503B (en) | 2019-12-20 | 2019-12-20 | Ceramic sheet with high-strength green body and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911329174.1A CN111018503B (en) | 2019-12-20 | 2019-12-20 | Ceramic sheet with high-strength green body and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111018503A CN111018503A (en) | 2020-04-17 |
| CN111018503B true CN111018503B (en) | 2022-06-21 |
Family
ID=70211292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911329174.1A Active CN111018503B (en) | 2019-12-20 | 2019-12-20 | Ceramic sheet with high-strength green body and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111018503B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635215A (en) * | 2020-06-14 | 2020-09-08 | 佛山方竹科技有限公司 | Preparation process of ceramic sheet |
| CN112608162A (en) * | 2020-12-16 | 2021-04-06 | 洪湖美好超薄岩板新材料科技有限责任公司 | Preparation process of ultrathin rock plate |
| CN112759368B (en) * | 2021-01-25 | 2022-06-21 | 中国地质大学（北京） | Rare earth oxide reinforced and toughened ceramic rock plate and preparation method thereof |
| CN114702298B (en) * | 2022-04-28 | 2022-11-15 | 佛山欧神诺陶瓷有限公司 | Deep color whole-body landscape thick brick and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01305877A (en) * | 1988-06-01 | 1989-12-11 | Shigeki Shibano | Patterned volcanic ash ceramic |
| JPH09227213A (en) * | 1996-02-20 | 1997-09-02 | Eguchi Koichiro | Production of building material utilizing volcanic ash |
| JP2005343777A (en) * | 2004-05-31 | 2005-12-15 | Akira Oguri | Technical method for preparing multipurpose base material improving existing ceramic preparation with common raw material |
| WO2007126178A1 (en) * | 2006-05-01 | 2007-11-08 | Shin Jong Jin | Bubble ceremic material with low weight and method for preparing thereof |
| CN108033804A (en) * | 2017-10-30 | 2018-05-15 | 信益陶瓷(中国)有限公司 | A kind of slim ceramic tile and its preparation process |
| CN108892496B (en) * | 2018-07-03 | 2021-10-19 | 佛山欧神诺陶瓷有限公司 | Humidity-adjusting ceramic tile with high moisture absorption and release capacity and preparation method thereof |
| CN109485379B (en) * | 2018-12-11 | 2020-11-03 | 佛山欧神诺陶瓷有限公司 | Preparation method of ceramic tile with low firing shrinkage |
-
2019
- 2019-12-20 CN CN201911329174.1A patent/CN111018503B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111018503A (en) | 2020-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111018503B (en) | Ceramic sheet with high-strength green body and preparation method thereof | |
| CN101844910B (en) | Thin-wall light-weighted sanitary ceramic body and manufacturing method thereof | |
| CN108892490B (en) | Green body for enhancing bonding strength of paving and pasting ceramic tile and preparation method thereof | |
| CN101672079B (en) | Method for preparing high stone powder mixing quantity porous baked brick | |
| CN109336556A (en) | A kind of enhancing of architectural pottery prestressing force coating paste and preparation method thereof and architectural pottery product | |
| CN111606691A (en) | Method for producing light foamed ceramic partition board by using lithium slag | |
| CN114436625A (en) | Ultra-thin ceramic rock plate and preparation method thereof | |
| CN105294138A (en) | Doublet aluminum oxide micropowder and preparation method thereof | |
| CN112898003B (en) | High-strength siliceous brown glaze electric porcelain and preparation method thereof | |
| CN101671179A (en) | High strength and high wear-resistance zirconium-aluminum-silicon composite self-release glazed ceramic material and manufacture method thereof | |
| CN109608180B (en) | Decorative wallboard and one-time firing method and application thereof | |
| CN111453993A (en) | Super wear-resistant polished glaze and preparation method thereof | |
| CN114671677B (en) | Energy-saving high-hardness ceramic tile and production process thereof | |
| CN109320257B (en) | Preparation method of high-strength high-porosity porous silicon nitride ceramic | |
| CN110668845B (en) | Glazing method for reducing glaze shrinkage defects generated on ceramic surface | |
| CN106747380B (en) | Light heat-insulating ceramic decorative line and preparation method thereof | |
| CN101186489A (en) | High antifouling ceramic tile and preparation method thereof | |
| CN114133270B (en) | Hollow flat plate ceramic filter membrane and preparation method thereof | |
| CN114085082B (en) | Silicon carbide/black talcum composite ceramic membrane support and preparation method thereof | |
| CN105669168A (en) | Production method of ceramic grinding element for gypsum mill | |
| CN112939589B (en) | Thermal shock resistant ceramic brick and preparation method thereof | |
| CN112979307B (en) | Aluminum titanate ceramic precursor material, aluminum titanate dense ceramic, and method for producing same | |
| CN114349473A (en) | Preparation method of environment-friendly functional ceramic | |
| CN106747276B (en) | Manufacturing process of hollow nixing pottery | |
| CN115650698B (en) | Method for recycling waste porcelain and ceramic tile |
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 |