CN112759364A - Foamed ceramic prepared by using perlite tailings as base material and preparation method thereof - Google Patents
Foamed ceramic prepared by using perlite tailings as base material and preparation method thereof Download PDFInfo
- Publication number
- CN112759364A CN112759364A CN202011564568.8A CN202011564568A CN112759364A CN 112759364 A CN112759364 A CN 112759364A CN 202011564568 A CN202011564568 A CN 202011564568A CN 112759364 A CN112759364 A CN 112759364A
- Authority
- CN
- China
- Prior art keywords
- foamed ceramic
- perlite
- parts
- tailings
- blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/1305—Organic additives
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
-
- 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
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1328—Waste materials; Refuse; Residues without additional clay
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B2235/3217—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
- C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
-
- 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
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates 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
- C04B2235/34—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
-
- 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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- 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
- C04B2235/442—Carbonates
-
- 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
- C04B2235/444—Halide containing anions, e.g. bromide, iodate, chlorite
- C04B2235/445—Fluoride containing anions, e.g. fluosilicate
-
- 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
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
-
- 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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Dispersion Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The foamed ceramic is prepared by stacking and sintering a plurality of sheets, and the base materials of the sheets are perlite tailings, foam stabilizer containing aluminum oxide and expanded perlite micropowder. The proportion that this application reduced the body through expanded perlite miropowder makes the foaming expansion rate of foamed ceramic body reduce to combine foam stabilizer to make foamed ceramic evenly expand and keep certain shape in the foaming process and prevent that foamed ceramic body from producing huge deformation and collapsing in the foaming process, satisfy foamed ceramic high temperature foaming under no mould frame strip spare.
Description
Technical Field
The application relates to a foamed ceramic prepared by using perlite tailings as a base material and a preparation method thereof.
Background
The foamed ceramic is generally prepared by taking solid wastes such as perlite tailings, polished porcelain slag, gold tailings, granite sawn mud and the like as main raw materials, introducing a proper amount of inorganic matters and adopting an advanced production process to foam at high temperature. The foamed ceramic has the functions of heat preservation, heat insulation, sound insulation, noise reduction, water resistance and moisture resistance at normal temperature due to the structural characteristics of closed holes.
The prior art for producing foamed ceramics in China generally fills granulated powder of the foamed ceramics in a mold frame which is formed by taking refractory materials such as cordierite-mullite or silicon carbide and the like as a bottom plate and a baffle plate, the granulated powder is isolated from the mold frame by alumina silicate refractory fiber paper, the mold frame carries the granulated powder to be put into a kiln to be fired together, the used mold frame kiln has high specific gravity and heavy weight, a large amount of heat is absorbed in the firing process, the proportion accounts for more than half of the total consumed heat, and natural gas at the firing section of the foamed ceramics in the unit of the traditional process is about 100-110 m-3And the energy consumption is huge, so that the production cost is high.
Disclosure of Invention
In order to solve the problems, the application provides a foamed ceramic prepared by using perlite tailings as a base material on one hand, the foamed ceramic is formed by stacking and sintering a plurality of sheets, and the base material of the sheets is the perlite tailings, a foam stabilizer containing aluminum oxide and expanded perlite micropowder. The proportion that this application reduced the body through expanded perlite miropowder makes the foaming expansion rate of foamed ceramic body reduce to combine foam stabilizer to make foamed ceramic evenly expand and keep certain shape in the foaming process and prevent that foamed ceramic body from producing huge deformation and collapsing in the foaming process, satisfy foamed ceramic high temperature foaming under no mould frame strip spare.
Preferably, the raw materials of the flake comprise the following substances in parts by mass: perlite tailings: 50-80 parts; expanded perlite micropowder: 15-25 parts; foam stabilizer: 5-15 parts; fluxing agent: 5-15 parts; foaming agent: 0.2-1 part, green body reinforcing agent: 0.01-0.1 portion. The important function of the foam stabilizer is to provide alumina, improve the viscosity of the high-temperature melt of the foamed ceramic, enable the foamed ceramic to uniformly expand and keep a certain shape, so that other minerals capable of providing alumina can be used as the foam stabilizer of the invention and can also be within the protection scope of the invention.
Preferably, the foam stabilizer is one or more of star kaolin, flint clay and bauxite in any proportion.
Preferably, the fluxing agent is one or more than two of potash feldspar, albite, talc, calcite, fluorite, lepidolite, zinc oxide, magnesium oxide, iron oxide and manganese oxide in any proportion; the fluxing agent contains zinc oxide.
Preferably, the foaming agent is one or two of black silicon carbide and green silicon carbide in any proportion, and the granularity of the foaming agent is not less than 1000 meshes.
Preferably, the blank reinforcing agent is one or more of CMA, HPMC and PVA in any proportion.
On the other hand, the application also discloses a preparation method of the foamed ceramic by using the perlite tailings as the base material, which comprises the following steps:
s1, material preparation: the raw materials are taken as follows according to parts by weight: perlite tailings: 50-80 parts; foam stabilizer: 5-15 parts; fluxing agent: 5-15 parts; foaming agent: 0.2-1 part, green body reinforcing agent: 0.01-0.1 part;
s2, wet grinding of a ball mill: the raw materials are as follows by mass ratio: ball: water 1: 2: 0.6, respectively putting the raw materials into a ball milling tank, wet-milling the mixture by a ball mill, and controlling the fineness to control the residue of a ten thousand-hole sieve to be not more than 5.0 wt%;
s3, granulation: carrying out spray granulation on the mixture after wet grinding, controlling the particle size to be not less than 80 wt% in a range of 40-80 meshes, and drying to obtain granulated powder, wherein the water content is not more than 7 wt%;
s4, secondary mixing: uniformly spreading 15-25 parts of expanded perlite micro powder on a granulation powder conveying belt according to the mass ratio, and uniformly mixing the expanded perlite micro powder and the granulation powder through a secondary drum sieve to obtain a mixture;
s5, dry pressing and forming: conveying the foamed ceramic mixture to a press by a belt conveyor and a bucket elevator, and pressing the foamed ceramic mixture into sheets by a dry pressing method;
s6, drying the blank: drying the slices in a drying roller kiln for 80-240min at a drying temperature not higher than 220 ℃ until the water content of the dried slices is not higher than 0.5 wt%;
s7, green body superposition: overlapping a plurality of sheets to form a blank;
s8, firing: coating a refractory coating on the bottom of the obtained blank, feeding the blank into a roller kiln, and carrying out die-free naked firing and high-temperature foaming firing to obtain a foamed ceramic blank;
s9, cold processing: the cooling work comprises cutting, edging, chamfering, slotting and the like, and the products after cold processing are subjected to color separation, grading, packaging and transferring into a warehouse. Through detection, the compressive strength of the foamed ceramic obtained by the method is more than 5MPa, and the volume weight is 300-3The water absorption is less than 1 percent, the fire endurance is more than 1h, the heat conductivity coefficient is 0.1-0.14w/(m.k), and the consumption of natural gas per cubic meter of product in a sintering section is 40-60Nm3。
Preferably, the thickness of the foamed ceramic blank is: 80-150 mm.
Preferably, the refractory coating is made of one or more than two of alumina, corundum and kaolin in any proportion.
Preferably, the sheet has a thickness of 15 to 25 mm.
This application can bring following beneficial effect: in the prior art, the sintered foamed ceramic is generally obtained by arranging powder with a certain thickness in a die frame made of refractory materials, and the die frame absorbs a large amount of heat and influences the heat dissipation effect of the foamed ceramic during annealing, thereby influencing the annealing speed. The invention uses expanded perlite, vitrified micro bubbles and foamed ceramic leftover particles as light filling agents to reduce the proportion of green bodies and reduce the expansion rate of foamed ceramics, and uses star kaolin or flint clay or bauxite as a formula to provide alumina as a foam stabilizer, thereby improving the viscosity and surface tension of high-temperature melts of the foamed ceramics, enabling the foamed ceramics to uniformly expand and keep the green bodies in shapes in the foaming process, and preventing the green bodies from excessively deforming and collapsing. By the method of stacking the plurality of sheets, a blank body formed by the plurality of layers of sheets is directly fed into a kiln for high-temperature foaming, so that the heat absorption of kiln furniture is reduced, the annealing time of the foamed ceramic is reduced, the energy consumption of a sintering section of the foamed ceramic is reduced to about 60 percent of that of the traditional process, and various properties of the foamed ceramic meet the use requirements, thereby improving the economic benefit of producing the foamed ceramic product by taking perlite tailings as a main raw material.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present application will be explained in detail through the following embodiments.
The present application itself comprises a formulation, a preparation method, but since the production method is based on the formulation, the following elucidation of the present application is made from the viewpoint of the preparation method, and the synthesis of the foamed ceramic of the present application comprises the following steps:
s1, material preparation: the raw materials are taken as follows according to parts by weight: perlite tailings: 50-80 parts; foam stabilizer: 5-15 parts; fluxing agent: 5-15 parts; foaming agent: 0.2-1 part, green body reinforcing agent: 0.01-0.1 part; under the condition that no special description is provided, the foam stabilizer is one or more than two of star kaolin, flint clay or bauxite in any proportion; the fluxing agent is one or more than two of potash feldspar, albite, talcum, calcite, fluorite, lepidolite, zinc oxide, magnesium oxide, iron oxide and manganese oxide in any proportion; the fluxing agent contains lepidolite; the foaming agent is one or two of black silicon carbide and green silicon carbide in any proportion, and the granularity of the foaming agent is not less than 1000 meshes; the blank reinforcing agent is one or more than two of CMA, HPMC and PVA in any proportion;
s2, wet grinding of a ball mill: the raw materials are as follows by mass ratio: ball: water 1: 2: 0.6, respectively putting the raw materials into a ball milling tank, wet-milling the mixture by a ball mill, and controlling the fineness to control the residue of a ten thousand-hole sieve to be not more than 5.0 wt%;
s3, granulation: carrying out spray granulation on the mixture after wet grinding, controlling the particle size to be not less than 80 wt% in a range of 40-80 meshes, and drying to obtain granulated powder, wherein the water content is not more than 7 wt%;
s4, secondary mixing: uniformly spreading 15-25 parts of expanded perlite micro powder on a granulation powder conveying belt according to the mass ratio, and uniformly mixing the expanded perlite micro powder and the granulation powder through a secondary drum sieve to obtain a mixture; the specific raw material composition is shown in table 1;
table 1:
s5, dry pressing and forming: conveying the foamed ceramic mixture to a press by a belt conveyor and a bucket elevator, and pressing the foamed ceramic mixture into sheets by a dry pressing method;
s6, drying the blank: drying the slices in a drying roller kiln for 80-240min at a drying temperature not higher than 220 deg.C, wherein the water content of the dried slices is not higher than 0.5 wt%, and the thickness of the slices is 15-25 mm;
s7, green body superposition: overlapping a plurality of sheets to form a blank;
s8, firing: feeding the bottom of the obtained blank body into a roller kiln, wherein the refractory coating is composed of one or more than two of alumina, corundum and kaolin in any proportion, and obtaining a foamed ceramic blank with the thickness of 80-150mm by adopting mould-free naked firing high-temperature foaming firing;
s9, cold processing: the cooling work comprises cutting, edging, chamfering, slotting and the like, and the products after cold processing are subjected to color separation, grading, packaging and transferring into a warehouse;
s10, performing product characterization on the obtained material, wherein specific parameters and measurement data are shown in a table 2.
Table 2:
note that: the compressive strength in Table 2 is equal to or greater than a value, which indicates that the measured value is between the value and the value + 1.
Therefore, the foamed ceramic prepared by using the perlite tailings as the main raw material by adopting the method has low volume weight and high strength, meets the use requirement of the partition board, has use value, avoids heat absorption of kiln furniture, and can obviously reduce the energy consumption of products.
Particularly, the selection of the foam stabilizer, the selection of the foaming agent, the addition mode of the expanded perlite micro powder and whether the modification treatment is carried out on the perlite, have important influence on the formation of the final foamed ceramic, the material property and the like.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A foamed ceramic prepared by using perlite tailings as a base material is characterized in that: the foamed ceramic is formed by stacking and sintering a plurality of sheets, and the base materials of the sheets are perlite tailings, foam stabilizer containing aluminum oxide and expanded perlite micropowder.
2. The foamed ceramic prepared by using perlite tailings as a base material according to claim 1, which is characterized in that: the raw materials of the slice comprise the following substances in parts by mass: perlite tailings: 50-80 parts; expanded perlite micropowder: 15-25 parts; foam stabilizer: 5-15 parts; fluxing agent: 5-15 parts; foaming agent: 0.2-1 part, green body reinforcing agent: 0.01-0.1 portion.
3. The foamed ceramic prepared by using perlite tailings as a base material according to claim 1, which is characterized in that: the foam stabilizer is one or more than two of star kaolin, flint clay or bauxite in any proportion.
4. The foamed ceramic prepared by using perlite tailings as a base material according to claim 1, which is characterized in that: the fluxing agent is one or more than two of potash feldspar, albite, talc, calcite, fluorite, lepidolite, zinc oxide, magnesium oxide, iron oxide and manganese oxide in any proportion; the fluxing agent contains zinc oxide.
5. The foamed ceramic prepared by using perlite tailings as a base material according to claim 1, which is characterized in that: the foaming agent is one or two of black silicon carbide and green silicon carbide in any proportion, and the granularity of the foaming agent is not less than 1000 meshes.
6. The foamed ceramic prepared by using perlite tailings as a base material according to claim 1, which is characterized in that: the blank reinforcing agent is one or more than two of CMA, HPMC and PVA in any proportion.
7. A preparation method of foamed ceramic using perlite tailings as base materials is characterized in that: the method comprises the following steps:
s1, material preparation: the raw materials are taken as follows according to parts by weight: perlite tailings: 50-80 parts; foam stabilizer: 5-15 parts; fluxing agent: 5-15 parts; foaming agent: 0.2-1 part, green body reinforcing agent: 0.01-0.1 part;
s2, wet grinding of a ball mill: the raw materials are as follows by mass ratio: ball: water 1: 2: 0.6, respectively putting the raw materials into a ball milling tank, wet-milling the mixture by a ball mill, and controlling the fineness to control the residue of a ten thousand-hole sieve to be not more than 5.0 wt%;
s3, granulation: carrying out spray granulation on the mixture after wet grinding, controlling the particle size to be not less than 80 wt% in a range of 40-80 meshes, and drying to obtain granulated powder, wherein the water content is not more than 7 wt%;
s4, secondary mixing: uniformly spreading 15-25 parts of expanded perlite micro powder on a granulation powder conveying belt according to the mass ratio, and uniformly mixing the expanded perlite micro powder and the granulation powder through a secondary drum sieve to obtain a mixture;
s5, dry pressing and forming: conveying the foamed ceramic mixture to a press by a belt conveyor and a bucket elevator, and pressing the foamed ceramic mixture into sheets by a dry pressing method;
s6, drying the blank: drying the slices in a drying roller kiln for 80-240min at a drying temperature not higher than 220 ℃ until the water content of the dried slices is not higher than 0.5 wt%;
s7, green body superposition: overlapping a plurality of sheets to form a blank;
s8, firing: coating a refractory coating on the bottom of the obtained blank, feeding the blank into a roller kiln, and carrying out die-free naked firing and high-temperature foaming firing to obtain a foamed ceramic blank;
s9, cold processing: the cooling work comprises cutting, edging, chamfering and grooving, and the products after cold processing are subjected to color separation, grading and package transferring into a warehouse.
8. The method for preparing the foamed ceramic based on the perlite tailings as claimed in claim 7, which is characterized in that: the thickness of the foamed ceramic blank is as follows: 80-150 mm.
9. The method for preparing the foamed ceramic based on the perlite tailings as claimed in claim 7, which is characterized in that: the refractory coating is formed by combining one or more than two of alumina, corundum and kaolin in any proportion.
10. The method for preparing the foamed ceramic based on the perlite tailings as claimed in claim 7, which is characterized in that: the thickness of the thin sheet is 15-25 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011564568.8A CN112759364A (en) | 2020-12-25 | 2020-12-25 | Foamed ceramic prepared by using perlite tailings as base material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011564568.8A CN112759364A (en) | 2020-12-25 | 2020-12-25 | Foamed ceramic prepared by using perlite tailings as base material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112759364A true CN112759364A (en) | 2021-05-07 |
Family
ID=75694612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011564568.8A Pending CN112759364A (en) | 2020-12-25 | 2020-12-25 | Foamed ceramic prepared by using perlite tailings as base material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112759364A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116283340A (en) * | 2022-12-12 | 2023-06-23 | 东北大学 | Technology for preparing foaming ceramic wallboard by using boric sludge without die bare firing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100889805B1 (en) * | 2007-09-19 | 2009-03-20 | 주식회사 엘디씨홀딩스 | Friendly environmental porous ceramic panel for construction materials and preparation method thereof |
| JP2011042544A (en) * | 2009-08-24 | 2011-03-03 | Toko Perlite Kogyo Kk | Method for producing ceramic |
| CN105399441A (en) * | 2015-12-11 | 2016-03-16 | 浙江省建筑科学设计研究院有限公司 | Perlite-based micropore-closed type foamed ceramic |
| CN111170759A (en) * | 2020-01-13 | 2020-05-19 | 山东晟世达科技有限公司 | Method for manufacturing non-mould naked-firing foamed ceramic |
| CN111484350A (en) * | 2019-11-12 | 2020-08-04 | 安徽省隆达建材科技有限公司 | Production process of sound-insulation noise-reduction foamed ceramic insulation board |
| CN111995423A (en) * | 2019-05-26 | 2020-11-27 | 广东罕王石和陶绿色建材科技有限公司 | Foamed ceramic terrazzo composite board and preparation method thereof |
| CN113307609A (en) * | 2021-06-07 | 2021-08-27 | 安徽省隆达建材科技有限公司 | High-strength foamed ceramic heat-insulation decorative plate and preparation method thereof |
-
2020
- 2020-12-25 CN CN202011564568.8A patent/CN112759364A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100889805B1 (en) * | 2007-09-19 | 2009-03-20 | 주식회사 엘디씨홀딩스 | Friendly environmental porous ceramic panel for construction materials and preparation method thereof |
| JP2011042544A (en) * | 2009-08-24 | 2011-03-03 | Toko Perlite Kogyo Kk | Method for producing ceramic |
| CN105399441A (en) * | 2015-12-11 | 2016-03-16 | 浙江省建筑科学设计研究院有限公司 | Perlite-based micropore-closed type foamed ceramic |
| CN111995423A (en) * | 2019-05-26 | 2020-11-27 | 广东罕王石和陶绿色建材科技有限公司 | Foamed ceramic terrazzo composite board and preparation method thereof |
| CN111484350A (en) * | 2019-11-12 | 2020-08-04 | 安徽省隆达建材科技有限公司 | Production process of sound-insulation noise-reduction foamed ceramic insulation board |
| CN111170759A (en) * | 2020-01-13 | 2020-05-19 | 山东晟世达科技有限公司 | Method for manufacturing non-mould naked-firing foamed ceramic |
| CN113307609A (en) * | 2021-06-07 | 2021-08-27 | 安徽省隆达建材科技有限公司 | High-strength foamed ceramic heat-insulation decorative plate and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116283340A (en) * | 2022-12-12 | 2023-06-23 | 东北大学 | Technology for preparing foaming ceramic wallboard by using boric sludge without die bare firing |
| CN116283340B (en) * | 2022-12-12 | 2024-02-09 | 东北大学 | Technology for preparing foaming ceramic wallboard by using boric sludge without die bare firing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111170759B (en) | Method for manufacturing non-mould naked-firing foamed ceramic | |
| CN109502981B (en) | Foamed ceramic composite board with gold tailings and granite tailings as main materials and preparation method thereof | |
| CN105669173A (en) | Thermal insulating decorative ceramic plate produced by comprehensive utilization of perlite waste and production method thereof | |
| CN111187094B (en) | Lithium-containing foamed ceramic, composite board using foamed ceramic and preparation method of composite board | |
| CN112759413A (en) | Foamed ceramic prepared by using polishing slurry as base material and preparation method thereof | |
| CN106699109A (en) | Foamed ceramic composite plate based on shale and copper tailings as main materials and production method of foamed ceramic composite plate | |
| CN109516773B (en) | Preparation method of light wallboard and multilayer light wallboard | |
| CN102795774A (en) | Method for manufacturing nano microcrystal sheet material by utilizing quartz sand | |
| CN110526683A (en) | A method of the composite foamed ceramic thermal insulation plate of crystallite is prepared using Ta Nb tailings | |
| CN107586124A (en) | High-strength light composite ceramic material and preparation method thereof | |
| CN108117376A (en) | A kind of preparation method of sintered perforated brick | |
| CN112759364A (en) | Foamed ceramic prepared by using perlite tailings as base material and preparation method thereof | |
| CN214658385U (en) | Foamed ceramic and high-strength foamed cement composite board | |
| CN112759417A (en) | Foamed ceramic prepared by using granite saw mud as base material and preparation method thereof | |
| CN109384455A (en) | A kind of the high-strength light wallboard and production method of once sintered decorative cover out | |
| CN111205074B (en) | Foamed ceramic containing cordierite framework and preparation method thereof | |
| CN113152816A (en) | Foamed ceramic and high-strength foamed cement composite board and preparation method thereof | |
| KR101398816B1 (en) | Artificial stone made from waste stone or lightweight aggregate of basalt | |
| CN107954693A (en) | A kind of refractory ceramics metallic composite | |
| CN112723900A (en) | Foamed ceramic prepared by using gold tailings as base material and preparation method thereof | |
| CN107459342B (en) | Periclase-silicon oxynitride composite refractory material for microwave metallurgical kiln car | |
| EP3309135A1 (en) | Method for producing large-sized foamed glass-crystalline blocks | |
| CN112174638A (en) | Novel preparation process of foamed ceramic raw material | |
| CN106747312A (en) | The production technology that a kind of high-strength building is laid bricks | |
| CN111153710B (en) | High-strength low-heat-conduction foamed ceramic, composite board using foamed ceramic and preparation method of composite board |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210507 |