CN112723900A - Foamed ceramic prepared by using gold tailings as base material and preparation method thereof - Google Patents

Foamed ceramic prepared by using gold tailings as base material and preparation method thereof Download PDF

Info

Publication number
CN112723900A
CN112723900A CN202011564612.5A CN202011564612A CN112723900A CN 112723900 A CN112723900 A CN 112723900A CN 202011564612 A CN202011564612 A CN 202011564612A CN 112723900 A CN112723900 A CN 112723900A
Authority
CN
China
Prior art keywords
foamed ceramic
gold tailings
parts
base material
prepared
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.)
Withdrawn
Application number
CN202011564612.5A
Other languages
Chinese (zh)
Inventor
王凯
范士猛
郑树清
管鹏飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Shengshida Technology Co ltd
Original Assignee
Shandong Shengshida Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Shengshida Technology Co ltd filed Critical Shandong Shengshida Technology Co ltd
Priority to CN202011564612.5A priority Critical patent/CN112723900A/en
Publication of CN112723900A publication Critical patent/CN112723900A/en
Withdrawn legal-status Critical Current

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
    • 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
    • C04B33/00—Clay-wares
    • C04B33/02—Preparing or treating the raw materials individually or as batches
    • C04B33/13—Compounding ingredients
    • 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
    • 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
    • C04B2235/3262—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
    • C04B2235/3436—Alkaline earth metal silicates, e.g. barium silicate
    • C04B2235/3445—Magnesium silicates, e.g. forsterite
    • 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
    • C04B2235/36—Glass starting materials for making ceramics, e.g. silica 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
    • C04B2235/38—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
    • C04B2235/444—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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54—Particle size related information
    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
    • 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
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/606—Drying
    • 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)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

The foamed ceramic is prepared by stacking and sintering a plurality of sheets, wherein the sheet base materials are gold tailings, a foam stabilizer containing aluminum oxide and a light filler, the content of the aluminum oxide in the gold tailings is not less than 6 wt%, and the content of the calcium oxide in the gold tailings is not more than 2 wt%. The application utilizes SiO in gold tailings2And Al2O3The high-temperature melting is carried out to form a glass phase with a certain viscosity, the mutual adhesion of the thin sheets is promoted, not only the gold tailing material is used as a foaming main body, but also the functional material for thin sheet overlapping firing is used, the specific gravity of the blank body is reduced through the light filling agent, so that the foaming expansion rate of the foamed ceramic is reduced, the foamed ceramic is uniformly expanded and kept in a certain shape in the foaming process by utilizing the foam stabilizer, and the phenomenon that the foamed ceramic is uniformly expanded and kept in a certain shape is preventedThe foaming ceramic blank body is greatly deformed and sticks to a stick in the foaming process, so that the requirement of high-temperature foaming of the foaming ceramic under the condition of no mould frame strip is met.

Description

Foamed ceramic prepared by using gold tailings as base material and preparation method thereof
Technical Field
The application relates to a foamed ceramic prepared by using gold 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 gold tailings as a base material, wherein the foamed ceramic is formed by stacking and sintering a plurality of sheets, the sheet base material comprises the gold tailings, a foam stabilizer containing aluminum oxide and a light filler, the content of the aluminum oxide in the gold tailings is not lower than 6 wt%, and the content of the calcium oxide in the gold tailings is not higher than 2 wt%. The application utilizes SiO in gold tailings2And Al2O3The high-temperature melting is carried out to form a glass phase with a certain viscosity, the mutual bonding effect of the thin sheets is promoted, not only gold tailing materials are used as a foaming main body, but also the gold tailing materials are used as functional materials for thin sheet stacking burning, the specific gravity of the blank body is reduced through the light filling agent, so that the foaming expansion rate of the foamed ceramic is reduced, the foamed ceramic is uniformly expanded and keeps a certain shape in the foaming process by utilizing the foam stabilizing agent, the foamed ceramic blank body is prevented from generating large deformation in the foaming process and being stuck to a stick, and the high-temperature foaming of the foamed ceramic under the condition of no mould frame strip is met.
Preferably, the raw materials of the flake comprise the following substances in parts by mass: gold tailings: 40-60 parts; light filler: 20-30 parts of a solvent; foam stabilizer: 12-25 parts; fluxing agent: 10-20 parts; foaming agent: 0.2-1 part, green body reinforcing agent: 0.01-0.1 portion.
Preferably, the foam stabilizer is one or more of star kaolin, flint clay and bauxite in any proportion. An important function of the foam stabilizer is to provide alumina, improve the viscosity of high-temperature melt of the foamed ceramic, and enable the foamed ceramic to expand uniformly and keep a certain shape.
Preferably, the light filler is one or two of vitrified micro bubbles and foamed ceramic leftover material particles in any proportion. The light filling agent has the important functions of reducing the specific gravity of the foamed ceramic blank and the expansion rate of the foamed ceramic, and meanwhile, the light filling agent can fully react with the foamed ceramic and be melted into a whole in the foaming process without influencing the pore structure of the foamed ceramic.
Preferably, the fluxing agent is one or more of potash feldspar, albite, talc, calcite, fluorite, lepidolite, zinc oxide, magnesium oxide, iron oxide and manganese oxide in any proportion.
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 using the gold 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: gold tailings: 35-50 parts; foam stabilizer: 12-35 parts; fluxing agent: 10-20 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 foamed ceramic and the green body binder raw materials into a ball milling tank, and wet milling the mixture by a ball mill, wherein the fineness is controlled to ensure that the residue of a ten thousand-hole sieve is not more than 5.0 wt%;
s3, granulation: carrying out spray granulation on the mixture obtained after wet grinding of the foamed ceramic to obtain granulated powder, controlling the particle size to be 40-80 meshes and not less than 80 wt%, and drying to obtain the water content of not more than 7 wt%;
s4, secondary mixing: uniformly and flatly paving 20-30 parts of light filler on a granulating powder conveying belt according to the mass ratio, and uniformly mixing the light filler and the granulating 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 into sheets of 15-25mm 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 sintering the blank into a foamed ceramic blank by adopting a dieless naked sintering high-temperature foaming process;
s9, cold processing: the method comprises the steps of cutting, edging, chamfering and grooving, and the products after cold machining are subjected to color separation, grading and package 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 300-500 kg/m3The water absorption rate is less than 1%, the fire endurance is more than 1h, the heat conductivity coefficient is 0.1-0.14 w/(m.k), and the consumption of unit product natural gas in a sintering section is 40-60 m3。
Preferably, the thickness of the foamed ceramic blank is: 80-150 mm;
preferably, the refractory coating is composed of one or more than two components of alumina, corundum and kaolin in any proportion.
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 the vitrified micro bubbles and the foamed ceramic leftover particles as the light filling agent to reduce the proportion of green body and the expansion rate of the foamed ceramicAnd the star kaolin or the flint clay or the bauxite is used as a formula to provide the aluminum oxide as a foam stabilizer, so that the viscosity and the surface tension of the high-temperature melt of the foamed ceramic are improved, the foamed ceramic uniformly expands in the foaming process, the blank keeps the shape, and the blank is prevented from being excessively deformed and collapsed. By the method of stacking a plurality of slices, SiO in the gold tailings is fully utilized2And Al2O3The high-temperature melting is carried out to form a glass phase with a certain viscosity, the mutual bonding effect of the sheets is promoted, so that the bonding force between layers is improved when the sheets are stacked and roasted, a blank body formed by a plurality of layers of sheets is directly fed into a kiln for high-temperature foaming, 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 all properties of the foamed ceramic meet the use requirements, so that the economic benefit of producing the foamed ceramic product by taking gold tailings as a main raw material is improved.
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: gold tailings: 35-50 parts; foam stabilizer: 12-35 parts; fluxing agent: 10-20 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 foamed ceramic and the green body binder raw materials into a ball milling tank, and wet milling the mixture by a ball mill, wherein the fineness is controlled to ensure that the residue of a ten thousand-hole sieve is not more than 5.0 wt%;
s3, granulation: carrying out spray granulation on the mixture obtained after wet grinding of the foamed ceramic to obtain granulated powder, controlling the particle size to be 40-80 meshes and not less than 80 wt%, and drying to obtain the water content of not more than 7 wt%;
s4, secondary mixing: uniformly and flatly paving 20-30 parts of light filler on a granulating powder conveying belt according to the mass ratio, and uniformly mixing the light filler and the granulating powder through a secondary drum sieve to obtain a mixture, wherein the specific components are shown in table 1;
table 1:
Figure BDA0002860369940000041
s5, dry pressing and forming: conveying the foamed ceramic mixture to a press by a belt conveyor and a bucket elevator, and pressing into sheets of 15-25mm 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: and (2) 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, a non-mold naked firing high-temperature foaming firing foaming ceramic blank is adopted, and the thickness of the foaming ceramic blank is as follows: 80-150 mm;
s9, cold processing: cutting, edging, chamfering and grooving, and color separating, grading and packaging the cold-processed product and transferring the product 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:
Figure BDA0002860369940000051
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 gold 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 the heat absorption of kiln furniture, can obviously reduce the energy consumption of products, fully utilizes the characteristics of substances in the gold tailings, and plays an important role in integrating the gold tailings after superposition roasting.
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 gold tailings as a base material is characterized in that: the foamed ceramic is formed by stacking and sintering a plurality of sheets, wherein the base materials of the sheets are gold tailings, a foam stabilizer containing aluminum oxide and a light filler, the content of the aluminum oxide in the gold tailings is not lower than 6 wt%, and the content of the calcium oxide in the gold tailings is not higher than 2 wt%.
2. The foamed ceramic prepared by using gold tailings as a base material according to claim 1, wherein the foamed ceramic is prepared by using gold tailings as a base material, and the foamed ceramic comprises the following components in parts by weight: the raw materials of the slice comprise the following substances in parts by mass: gold tailings: 40-60 parts; light filler: 20-30 parts of a solvent; foam stabilizer: 12-25 parts; fluxing agent: 10-20 parts; foaming agent: 0.2-1 part, green body reinforcing agent: 0.01-0.1 portion.
3. The foamed ceramic prepared by using gold tailings as a base material according to claim 1, wherein the foamed ceramic is prepared by using gold tailings as a base material, and the foamed ceramic comprises the following components in parts by weight: 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 gold tailings as a base material according to claim 1, wherein the foamed ceramic is prepared by using gold tailings as a base material, and the foamed ceramic comprises the following components in parts by weight: the light filling agent is one or two of vitrified micro bubbles and foaming ceramic leftover material particles in any proportion.
5. The foamed ceramic prepared by using gold tailings as a base material according to claim 1, wherein the foamed ceramic is prepared by using gold tailings as a base material, and the foamed ceramic comprises the following components in parts by weight: 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.
6. The foamed ceramic prepared by using gold tailings as a base material according to claim 1, wherein the foamed ceramic is prepared by using gold tailings as a base material, and the foamed ceramic comprises the following components in parts by weight: 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.
7. The foamed ceramic prepared by using gold tailings as a base material according to claim 1, wherein the foamed ceramic is prepared by using gold tailings as a base material, and the foamed ceramic comprises the following components in parts by weight: the blank reinforcing agent is one or more than two of CMA, HPMC and PVA in any proportion.
8. A preparation method of foamed ceramic using gold tailings as a base material is characterized by comprising the following steps: the method comprises the following steps:
s1, material preparation: the raw materials are taken as follows according to parts by weight: gold tailings: 35-50 parts; foam stabilizer: 12-35 parts; fluxing agent: 10-20 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 foamed ceramic and the green body binder raw materials into a ball milling tank, and wet milling the mixture by a ball mill, wherein the fineness is controlled to ensure that the residue of a ten thousand-hole sieve is not more than 5.0 wt%;
s3, granulation: carrying out spray granulation on the mixture obtained after wet grinding of the foamed ceramic to obtain granulated powder, controlling the particle size to be 40-80 meshes and not less than 80 wt%, and drying to obtain the water content of not more than 7 wt%;
s4, secondary mixing: uniformly and flatly paving 20-30 parts of light filler on a granulating powder conveying belt according to the mass ratio, and uniformly mixing the light filler and the granulating 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 into sheets of 15-25mm 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 sintering the blank into a foamed ceramic blank by adopting a dieless naked sintering high-temperature foaming process;
s9, cold processing: the method comprises the steps of cutting, edging, chamfering and grooving, and the products after cold machining are subjected to color separation, grading and package transferring into a warehouse.
9. The method for preparing the foamed ceramic based on the gold tailings as claimed in claim 8, wherein the method comprises the following steps: the thickness of the foamed ceramic blank is as follows: 80-150 mm.
10. The method for preparing the foamed ceramic based on the gold tailings as claimed in claim 8, wherein the method comprises the following steps: the refractory coating is composed of one or more than two components of alumina, corundum and kaolin in any proportion.
CN202011564612.5A 2020-12-25 2020-12-25 Foamed ceramic prepared by using gold tailings as base material and preparation method thereof Withdrawn CN112723900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011564612.5A CN112723900A (en) 2020-12-25 2020-12-25 Foamed ceramic prepared by using gold tailings as base material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011564612.5A CN112723900A (en) 2020-12-25 2020-12-25 Foamed ceramic prepared by using gold tailings as base material and preparation method thereof

Publications (1)

Publication Number Publication Date
CN112723900A true CN112723900A (en) 2021-04-30

Family

ID=75616271

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011564612.5A Withdrawn CN112723900A (en) 2020-12-25 2020-12-25 Foamed ceramic prepared by using gold tailings as base material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN112723900A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101367591B1 (en) * 2013-04-25 2014-02-27 (주)엔바이로솔루션 Fabrication method of blistered ceramic
CN109095887A (en) * 2018-08-30 2018-12-28 山东晟世达新材料有限公司 A kind of ultralight foamed ceramic thermal insulation material and preparation method thereof
CN109502981A (en) * 2018-12-11 2019-03-22 山东晟世达新材料有限公司 Golden tailing and granite tailing are the foamed ceramic composite plate and preparation method thereof of major ingredient
CN109534849A (en) * 2019-01-17 2019-03-29 武汉理工大学 A method of exterior insulation is prepared using gold tailings
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
CN111205074A (en) * 2020-01-13 2020-05-29 山东晟世达科技有限公司 Foamed ceramic containing cordierite framework and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101367591B1 (en) * 2013-04-25 2014-02-27 (주)엔바이로솔루션 Fabrication method of blistered ceramic
CN109095887A (en) * 2018-08-30 2018-12-28 山东晟世达新材料有限公司 A kind of ultralight foamed ceramic thermal insulation material and preparation method thereof
CN109502981A (en) * 2018-12-11 2019-03-22 山东晟世达新材料有限公司 Golden tailing and granite tailing are the foamed ceramic composite plate and preparation method thereof of major ingredient
CN109534849A (en) * 2019-01-17 2019-03-29 武汉理工大学 A method of exterior insulation is prepared using gold tailings
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
CN111205074A (en) * 2020-01-13 2020-05-29 山东晟世达科技有限公司 Foamed ceramic containing cordierite framework and preparation method thereof

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
CN106365651B (en) The preparation method of spherical aggregate enhancing refractory material
CN112759413A (en) Foamed ceramic prepared by using polishing slurry as base material and preparation method thereof
CN102267262B (en) Glass magnesium board and manufacturing 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
CN109081683A (en) A kind of big plate of environment-friendly ceramic and preparation method thereof
CN102838376A (en) Preparation method of light-weight closed-pore ceramic heat insulating board
CN110526683A (en) A method of the composite foamed ceramic thermal insulation plate of crystallite is prepared using Ta Nb tailings
CN109320213A (en) A kind of high-compactness refractory ceramic product and its preparation process
KR20210090187A (en) Method for preparing ceramic particulate mixture
CN112759364A (en) Foamed ceramic prepared by using perlite tailings as base material and preparation method thereof
CN111943642B (en) High-strength foamed ceramic and preparation method thereof
CN112759417A (en) Foamed ceramic prepared by using granite saw mud as base material and preparation method thereof
KR20210092746A (en) Ceramic Particulate Mixture Containing Coal-Fired Fly Ash
CN109384455A (en) A kind of the high-strength light wallboard and production method of once sintered decorative cover out
CN108911765B (en) Method for artificially synthesizing and manufacturing mullite casting sand by taking flint clay as main material
CN111153711A (en) Foamed ceramic with high fire resistance limit and capable of being rapidly cooled and preparation method thereof
CN111205074B (en) Foamed ceramic containing cordierite framework and preparation method thereof
CN112723900A (en) Foamed ceramic prepared by using gold tailings as base material and preparation method thereof
CN113152816A (en) Foamed ceramic and high-strength foamed cement composite board and preparation method thereof
CN214658385U (en) Foamed ceramic and high-strength foamed cement composite board
EP3309135A1 (en) Method for producing large-sized foamed glass-crystalline blocks

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
WW01 Invention patent application withdrawn after publication

Application publication date: 20210430

WW01 Invention patent application withdrawn after publication