CN107879633A - Green glass-ceramic and preparation method thereof - Google Patents
Green glass-ceramic and preparation method thereof Download PDFInfo
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- CN107879633A CN107879633A CN201711260307.5A CN201711260307A CN107879633A CN 107879633 A CN107879633 A CN 107879633A CN 201711260307 A CN201711260307 A CN 201711260307A CN 107879633 A CN107879633 A CN 107879633A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C4/00—Compositions for glass with special properties
- C03C4/02—Compositions for glass with special properties for coloured glass
Abstract
The invention discloses a kind of green glass-ceramic and preparation method thereof.This method includes：(1) red mud slag, chromium slag are mixed with adjusting material and carries out melt process, to obtain melt-mixed material；(2) melt-mixed material is subjected to clarification homogenizing processing, to obtain clarification homogenizing compound；(3) the clarification homogenizing compound is cast and made annealing treatment, to obtain parent glass；(4) parent glass is subjected to coring and Crystallizing treatment, to obtain green glass-ceramic.Thus, this method is using two kinds of zero cost solid waste red mud slags and poisonous chromium slag as the primary raw material for preparing green glass-ceramic, obtained green glass-ceramic beautiful appearance and bending strength is less than 0.5% not less than 95MPa, the porosity, so as to not only reduce the cost of material of green glass-ceramic, and realize the recycling of red mud slag and chromium slag.
Description
Technical field
The invention belongs to green glass-ceramic preparation field, and specifically, the present invention relates to green glass-ceramic and its system
Preparation Method.
Background technology
Red mud is the waste residue discharged in alumina producing industry, its complicated component, mainly contains CaO, Al2O3、SiO2、
Fe2O3、Na2O、TiO2Deng.Red mud at present is difficult to develop because alkali content is higher, and main processing ways are accumulation, are occupied
A large amount of soils, also generate serious environmental problem.
Using " molten point of rotary hearth furnace carbon thermal reduction-gas furnace " PROCESS FOR TREATMENT red mud, metallic iron and red mud slag can obtain.It is red
Mud slag mainly contains CaO, SiO2、Al2O3、Na2O、TiO2.The chemical composition of red mud slag is similar to calcium alkali silica devitrified glass,
With addition of the raw material that can be used as preparing devitrified glass after a certain amount of calcium source, silicon source, fluxing agent and fining agent melting homogenizing.Do not adding
In the case of adding colouring agent, devitrified glass prepared by red mud slag is generally nattierblue, though there is decorative pattern attractive in appearance, does not meet micro-
Crystal glass is as requirement of the building and ornament materials to color and luster, it is therefore desirable to which devitrified glass is coloured.
Chromium slag is a kind of poisonous solid slag that can be discharged in chromium salt production engineering, and its main chemical compositions has CaO
25-35 parts by weight, MgO 20-35 parts by weight, Al2O36-13 parts by weight, SiO25-15 parts by weight, Fe2O33-10 weight point,
Cr2O33-8 parts by weight, Cr6+0.4-2.4% parts by weight, a small amount of K2O and Na2O etc..Wherein Cr6+It is present in water miscible
Na2Cr2O7And acid soluble CaCrO4It is central, it is toxic component main in chromium slag, there is strong corrosivity and cause to human body
It is carcinous.The chromium slag that China stores up at present is higher than 6,000,000 tons, and annual still with the speed increase of few hundred thousand tonnes of, a large amount of stockpilings
Chromium slag under conditions of rain drop erosion, its dissolve Cr6+Poisonous waste water is formed to cause soil, underground water and rivers,lakes and seas
Serious pollution, therefore be the major issue that Environmental Protection in China work faces to the progress harmless treatment of chromium slag and recycling.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is to propose a kind of green glass-ceramic and preparation method thereof.This method uses two kinds of zero cost solid waste red mud slags
With poisonous chromium slag as the primary raw material for preparing green glass-ceramic, obtained green glass-ceramic beautiful appearance and bending strength
It is less than 0.5% not less than 95MPa, the porosity, so as to not only reduce the cost of material of green glass-ceramic, and realizes red
The recycling of mud slag and chromium slag.
In one aspect of the invention, the present invention proposes a kind of method for preparing green glass-ceramic, according to the present invention
Embodiment, this method includes：
(1) red mud slag, chromium slag are mixed with adjusting material and carries out melt process, to obtain melt-mixed material；
(2) melt-mixed material is subjected to clarification homogenizing processing, to obtain clarification homogenizing compound；
(3) the clarification homogenizing compound is cast and made annealing treatment, to obtain parent glass；
(4) parent glass is subjected to coring and Crystallizing treatment, to obtain green glass-ceramic.
The method for preparing green glass-ceramic according to embodiments of the present invention, the primary raw material red mud slag and chromium slag of use
Zero cost solid waste is belonged to, significantly reduces the financial cost of the technique, while alleviates the problem of relevant enterprise processing solid waste；
And the CaO and MgO in chromium slag can be used as calcium source and the chemical composition of magnesium source balance red mud slag.Red mud slag and chromium
CaO, MgO, SiO in slag2、Al2O3As the main chemical compositions of parent glass, TiO2And Cr2O3As main nucleating agent,
The poisonous hexavalent chromium remained in chromium slag can be reduced to nontoxic trivalent chromium by FeO and residual C in red mud slag, eliminate Cr VI
Toxicity, and Cr2O3Colouring agent that can be natural as devitrified glass makes devitrified glass turn into green appearance attractive in appearance, while Cr2O3
Principal crystalline phase center is wrapped in as nucleating agent, can not be leached, safety and environmental protection.Thus, this method is consolidated using two kinds of zero costs
Useless red mud slag and poisonous chromium slag are as the primary raw material for preparing green glass-ceramic, obtained green glass-ceramic beautiful appearance
And bending strength is less than 0.5% not less than 95MPa, the porosity, so as to not only reduce the cost of material of green glass-ceramic, and
And realize the recycling of red mud slag and chromium slag.
In addition, the method according to the above embodiment of the present invention for preparing green glass-ceramic can also have what is added as follows
Technical characteristic：
In some embodiments of the invention, in step (1), the red mud slag includes：The oxidation of 10-40 parts by weight
Calcium；The silica of 20-60 parts by weight；The aluminum oxide of 3-8 parts by weight；The sodium oxide molybdena of 1-7 parts by weight；The dioxy of 2-5 parts by weight
Change titanium；The ferrous oxide of 0.5-2 parts by weight；And the carbon residue of 0.1-0.5 parts by weight.Thus, it can be used for together with chromium slag
Green glass-ceramic is prepared, significantly improves the economic value of the solid waste, while avoids environmental problem caused by the solid waste.
In some embodiments of the invention, in step (1), the chromium cinder ladle includes：The calcium oxide of 25-35 parts by weight；
The magnesia of 20-35 parts by weight；The aluminum oxide of 6-13 parts by weight；The silica of 5-15 parts by weight；Three oxygen of 3-10 parts by weight
Change two iron；The chromium oxide of 3-8 parts by weight；The Cr VI of 0.4-2.4 parts by weight.Thus, it can be used for together with red mud slag
Green glass-ceramic is prepared, significantly improves the economic value of the solid waste, while avoids environmental problem caused by the solid waste.
In some embodiments of the invention, in step (1), the adjusting material includes：The titanium dioxide of 10-20 parts by weight
Silicon；The calcirm-fluoride of 1-3 parts by weight；The calcium sulfate of 2-6 parts by weight；And the potassium nitrate of 1-3 parts by weight.Thus, be advantageous to improve
The grade of green glass-ceramic.
In some embodiments of the invention, in step (1), the red mud slag and the chromium slag and the adjusting material
Mixing quality ratio be (50-70)：(10-25)：(10-40).Thus, it can further improve the grade of green glass-ceramic.
In some embodiments of the invention, in step (1), the temperature of the melt process is Celsius for 1450-1500
Degree, time 2-3h.Thus, it can further improve the grade of green glass-ceramic.
In some embodiments of the invention, in step (2), the temperature of the clarification homogenizing processing is 1400-1450
Degree Celsius, time 1-2h.Thus, it can further improve the grade of green glass-ceramic.
In some embodiments of the invention, in step (3), the temperature of the annealing is 500-600 degrees Celsius,
Time is not less than 2h.Thus, it can further improve the grade of green glass-ceramic.
In some embodiments of the invention, in step (4), the temperature of the coring processing is 620-690 degrees Celsius,
Time is 2-4h, and the temperature of the Crystallizing treatment is 730-860 degrees Celsius, time 2-4h.Thus, it can further improve green
The grade of devitrified glass.
In another aspect of the invention, the present invention proposes a kind of green glass-ceramic.According to an embodiment of the invention,
The green glass-ceramic is prepared using the above-mentioned method for preparing green glass-ceramic.Thus, solve red mud to melt
The recycling problem of two kinds of solid wastes of slag and poisonous chromium slag, while the green glass-ceramic of gained not only beautiful appearance and bending strength
It is less than 0.5% not less than 95MPa, the porosity.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the method flow schematic diagram according to an embodiment of the invention for preparing green glass-ceramic.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In one aspect of the invention, the present invention proposes a kind of method for preparing green glass-ceramic, according to the present invention
Embodiment, with reference to figure 1, this method includes：
S100：Red mud slag, chromium slag are mixed with adjusting material and carry out melt process
In the step, red mud slag, chromium slag are mixed with adjusting material and carry out melt process, to obtain melt-mixed material.
Inventor has found, uses zero cost solid waste red mud slag and chromium slag to significantly reduce the financial cost of the technique for primary raw material,
The problem of relevant enterprise processing solid waste is alleviated simultaneously；FeO and carbon residue in red mud slag can be used as reducing agent at high temperature
It is nontoxic trivalent chromium by hexavalent chrome reduction poisonous in chromium slag, and Cr2O3Colouring agent that can be natural as devitrified glass makes micro-
Crystal glass turns into green appearance attractive in appearance；CaO and MgO in chromium slag can be used as calcium source and magnesium source balances red mud slag
Chemical composition；Adjusting material has the function that to supplement silicon source, promotes raw materials melt, promotes the discharge of melt bubble and melt clarification.
According to one embodiment of present invention, red mud slag can include：The calcium oxide of 10-40 parts by weight；20-60 weight
The silica of part；The aluminum oxide of 3-8 parts by weight；The sodium oxide molybdena of 1-7 parts by weight；The titanium dioxide of 2-5 parts by weight；0.5-2 weights
Measure the ferrous oxide of part；And the carbon residue of 0.1-0.5 parts by weight.Thus, itself and chromium slag can be used to together prepare green microcrystalline
Glass, and hexavalent chrome reduction poisonous in chromium slag can be at high temperature by FeO in red mud slag and carbon residue as reducing agent
Nontoxic trivalent chromium, significantly improves the economic value of the solid waste, while avoids environmental problem caused by the solid waste.
According to still a further embodiment, chromium slag can include：The calcium oxide of 25-35 parts by weight；20-35 parts by weight
Magnesia；The aluminum oxide of 6-13 parts by weight；The silica of 5-15 parts by weight；The di-iron trioxide of 3-10 parts by weight；3-8 weights
Measure the chromium oxide of part；The Cr VI of 0.4-2.4 parts by weight.Thus, itself and red mud slag can be used to together prepare green microcrystalline
Glass, CaO and MgO in chromium slag can be used as calcium source and the chemical composition of magnesium source balance red mud slag, significantly improve this
The economic value of solid waste, while avoid environmental problem caused by the poisonous solid waste.
According to still another embodiment of the invention, adjusting material can include：The silica of 10-20 parts by weight；1-3 weight
The calcirm-fluoride of part；The calcium sulfate of 2-6 parts by weight；And the potassium nitrate of 1-3 parts by weight.Inventor has found that silica can supplement
The SiO of content deficiency in red mud slag and chromium slag2, calcirm-fluoride, calcium sulfate and potassium nitrate can promote raw materials melt, reduction melt to glue
Degree and promotion melt clarification.If dioxide-containing silica is too high, melt viscosity increases, and is unfavorable for the homogenizing of melt chemistry composition；If
Dioxide-containing silica is too low, can not form enough glass phases, the corrosivity of melt also can relative increase.Calcirm-fluoride, calcium sulfate
And potassium nitrate content is too high, melt corrosivity dramatically increases increase, and if calcirm-fluoride, calcium sulfate and potassium nitrate content are too low,
Can not be fully fluxing.
According to still another embodiment of the invention, the mixing quality ratio of red mud slag and chromium slag and adjusting material can be (50-
70)：(10-25)：(10-40).Inventor has found, fluxing, fining agent to contain when red mud slag and chromium slag content relative surplus
Relative deficiency is measured, melt viscosity is larger, it is difficult to is homogenized；Conversely, then fluxing, clarification agent content surplus, though melt viscosity is relatively low, holds
Easily homogenizing, but its high temperature corrosion is too strong, easily produces heavy corrosion to refractory material, is unfavorable for producing.
According to still another embodiment of the invention, the temperature of melt process can be 1450-1500 degrees Celsius, and the time can be with
For 2-3h.Inventor has found that if melting temperature is too low or the melting time is too short, melt viscosity is higher, and raw material is difficult to be homogenized；And if
Melting temperature is too high or the melting time is long, then melt corrosivity is stronger, and refractory material is difficult to bear.
S200：Melt-mixed material is subjected to clarification homogenizing processing
In the step, melt-mixed material is subjected to clarification homogenizing processing, to obtain clarification homogenizing compound.Invention human hair
Existing, during clarification homogenizing, the presence of adjusting material can accelerate clarification homogenizing efficiency, obtain clarification homogenizing compound.
According to one embodiment of present invention, the temperature of clarification homogenizing processing can be 1400-1450 degrees Celsius, and the time can
Think 1-2h.Inventor has found that clarifying temp is too high or settling time is too short, and not having receives melt cooling, melt volume
The effect that contracting, internal gas are discharged；And clarifying temp it is too low when, melt viscosity dramatically increases, and melt internal gas can not dash forward
Sticky melt is broken to be discharged；When settling time is long, corrosion of the melt to refractory material will dramatically increase.
S300：Clarification homogenizing compound is cast and made annealing treatment
In the step, clarification homogenizing compound is cast and made annealing treatment, to obtain parent glass.Invention human hair
It is existing, in the process, red mud slag and CaO, MgO, SiO in chromium slag2、Al2O3As the main chemical compositions of parent glass,
TiO2And Cr2O3As main nucleating agent, FeO and residual C in red mud slag can reduce the poisonous hexavalent chromium remained in chromium slag
For nontoxic trivalent chromium, the toxicity of Cr VI is eliminated.
According to one embodiment of present invention, the temperature of annealing can be 500-600 degrees Celsius, and the time can not be small
In 2h.Inventor has found, if annealing temperature is too high, crystallization can occur in advance for parent glass, and inside produces crystal, to follow-up
Technology for Heating Processing produce harmful effect；If annealing temperature is too low, the too fast easily fragmentation of parent glass cooling；Annealing time mistake
Short, parent glass internal stress is not discharged fully, the easy fragmentation of parent glass；And annealing time is long, production effect can be reduced
Rate.
S400：Parent glass is subjected to coring and Crystallizing treatment
In the step, parent glass is subjected to coring and Crystallizing treatment, to obtain green glass-ceramic.Invention human hair
It is existing, in the process, Cr2O3Colouring agent that can be natural as devitrified glass makes devitrified glass turn into green appearance attractive in appearance, together
When Cr2O3Principal crystalline phase center is wrapped in as nucleating agent, can not be leached, safety and environmental protection.
According to one embodiment of present invention, the temperature of coring processing can be 620-690 degrees Celsius, and the time can be 2-
4h, the temperature of Crystallizing treatment can be 730-860 degrees Celsius, and the time can be 2-4h.Inventor has found that coring processing as exists
Parent glass is incubated under certain nucleation temperature, makes to produce a large amount of uniform nucleus inside parent glass, Crystallizing treatment as exists
The parent glass for generating a large amount of nucleus is incubated under certain crystallization temperature, nucleus is grown into a large amount of uniform small crystalline substances
Body.Coring treatment temperature and Crystallizing treatment temperature is even is determined by the differential thermal analysis result of parent glass, it is too high or too low unfavorable
In the formation of nucleus and growing up for crystal, soaking time is long to cause crystal abnormal growth, and this will cause devitrified glass toughness
Reduce, fragility increase；And soaking time is too short, nucleus quantity can be than relatively low, and crystal can not fully grow up.
The method for preparing green glass-ceramic according to embodiments of the present invention, the primary raw material red mud slag and chromium slag of use
Zero cost solid waste is belonged to, significantly reduces the financial cost of the technique, while alleviates the problem of relevant enterprise processing solid waste；
And the CaO and MgO in chromium slag can be used as calcium source and the chemical composition of magnesium source balance red mud slag.Red mud slag and chromium
CaO, MgO, SiO in slag2、Al2O3As the main chemical compositions of parent glass, TiO2And Cr2O3As main nucleating agent,
The poisonous hexavalent chromium remained in chromium slag can be reduced to nontoxic trivalent chromium by FeO and residual C in red mud slag, eliminate Cr VI
Toxicity, and Cr2O3Colouring agent that can be natural as devitrified glass makes devitrified glass turn into green appearance attractive in appearance, while Cr2O3
Principal crystalline phase center is wrapped in as nucleating agent, can not be leached, safety and environmental protection.Thus, this method is consolidated using two kinds of zero costs
Useless red mud slag and poisonous chromium slag are as the primary raw material for preparing green glass-ceramic, obtained green glass-ceramic beautiful appearance
And bending strength is less than 0.5% not less than 95MPa, the porosity, so as to not only reduce the cost of material of green glass-ceramic, and
And realize the recycling of red mud slag and chromium slag.
According to an embodiment of the invention, the above-mentioned method for preparing green glass-ceramic at least have what follows advantage it
One：
The method for preparing green glass-ceramic according to embodiments of the present invention, take full advantage of solid waste red mud slag with it is poisonous
Chromium slag, significantly reduces the financial cost of the technique, while alleviates the problem of relevant enterprise processing solid waste；
The method for preparing green glass-ceramic according to embodiments of the present invention, utilizes the Cr in chromium slag2O3As colouring agent,
Without additionally adding, effective utilization to chromium slag is realized；
The method for preparing green glass-ceramic according to embodiments of the present invention, made using the FeO in red mud slag and carbon residue
It is at high temperature trivalent chromium by the hexavalent chrome reduction in chromium slag for reducing agent, eliminates the toxicity of Cr VI in chromium slag；
The method for preparing green glass-ceramic according to embodiments of the present invention, Cr2O3As nucleating agent, and it is wrapped in master
Crystalline phase center, it will not be leached by rainwater etc., safety and environmental protection.
In another aspect of the invention, the present invention proposes a kind of green glass-ceramic.According to an embodiment of the invention,
The green glass-ceramic is prepared using the above-mentioned method for preparing green glass-ceramic.Thus, solve red mud to melt
The recycling problem of two kinds of solid wastes of slag and poisonous chromium slag, while the green glass-ceramic of gained not only beautiful appearance and bending strength
It is less than 0.5% not less than 95MPa, the porosity.It is it should be noted that above-mentioned for preparing described by the method for green glass-ceramic
Feature and advantage be equally applicable to the green glass-ceramic, here is omitted.
Below with reference to specific embodiment, present invention is described, it is necessary to which explanation, these embodiments are only to describe
Property, without limiting the invention in any way.
Embodiment 1
From through " molten point of rotary hearth furnace reduction-gas furnace " red mud slag caused by processing red mud, chemical composition is CaO 16
Parts by weight, Al2O38 parts by weight, SiO237 parts by weight, the parts by weight of FeO 2, TiO25 parts by weight, Na2The parts by weight of O 4, residual C
0.2 parts by weight；From chromium slag, chemical composition is：The parts by weight of CaO 29, the parts by weight of MgO 28, Al2O39 parts by weight, SiO28 weights
Measure part, Fe2O37 parts by weight, Cr2O36 parts by weight, the parts by weight of Cr VI 1.5；The chemical composition of adjusting material is：SiO210 weight
Part, CaF22 parts by weight, CaSO43 parts by weight, KNO32 parts by weight.
The adjusting material of the red mud slag of 60 parts by weight, the chromium slag of 15 parts by weight and 1 parts by weight is well mixed, taken the photograph in 1460
Melting 3 times of homogenizing under family name's degree, then in 1420 degrees Celsius of lower 1 hours of clarification homogenizing, then by clarification homogenizing compound
Be cast among preheated mould and under 580 degrees Celsius anneal 2 hour parent glass derived above, finally by basic glass
Glass in 810 degrees Celsius of crystallization 2 hours, obtains green glass-ceramic in 650 degrees Celsius of coring 3 hours.Its color is bottle green,
Bending strength is 100MPa, and the porosity is less than 0.5%.
Embodiment 2
From through " molten point of rotary hearth furnace reduction-gas furnace " red mud slag caused by processing red mud, chemical composition is CaO 15
Parts by weight, Al2O38 parts by weight, SiO220 parts by weight, the parts by weight of FeO 2, TiO25 parts by weight, Na2The parts by weight of O 3, residual C
0.5 parts by weight；From chromium slag, chemical composition is：The parts by weight of CaO 26, the parts by weight of MgO 30, Al2O39 parts by weight, SiO29 weights
Measure part, Fe2O38 parts by weight, Cr2O36 parts by weight, the parts by weight of Cr VI 1；The chemical composition of adjusting material is：SiO212 weight
Part, CaF22 parts by weight, CaSO43 parts by weight, KNO32 parts by weight.
The adjusting material of the red mud slag of 65 parts by weight, the chromium slag of 12 parts by weight and 1 parts by weight is well mixed, taken the photograph in 1470
Melting 3 times of homogenizing under family name's degree, then in 1410 degrees Celsius of lower 1 hours of clarification homogenizing, then by clarification homogenizing compound
Be cast among preheated mould and under 580 degrees Celsius anneal 2 hour parent glass derived above, finally by basic glass
Glass in 830 degrees Celsius of crystallization 2 hours, obtains green glass-ceramic in 650 degrees Celsius of coring 3 hours.Its color is bottle green,
Bending strength is 95MPa, and the porosity is less than 0.5%.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
- A kind of 1. method for preparing green glass-ceramic, it is characterised in that including：(1) red mud slag, chromium slag are mixed with adjusting material and carries out melt process, to obtain melt-mixed material；(2) melt-mixed material is subjected to clarification homogenizing processing, to obtain clarification homogenizing compound；(3) the clarification homogenizing compound is cast and made annealing treatment, to obtain parent glass；(4) parent glass is subjected to coring and Crystallizing treatment, to obtain green glass-ceramic.
- 2. according to the method for claim 1, it is characterised in that in step (1), the red mud slag includes：The calcium oxide of 10-40 parts by weight；The silica of 20-60 parts by weight；The aluminum oxide of 3-8 parts by weight；The sodium oxide molybdena of 1-7 parts by weight；The titanium dioxide of 2-5 parts by weight；The ferrous oxide of 0.5-2 parts by weight；AndThe carbon residue of 0.1-0.5 parts by weight.
- 3. method according to claim 1 or 2, it is characterised in that in step (1), the chromium cinder ladle includes：The calcium oxide of 25-35 parts by weight；The magnesia of 20-35 parts by weight；The aluminum oxide of 6-13 parts by weight；The silica of 5-15 parts by weight；The di-iron trioxide of 3-10 parts by weight；The chromium oxide of 3-8 parts by weight；The Cr VI of 0.4-2.4 parts by weight.
- 4. according to the method for claim 1, it is characterised in that in step (1), the adjusting material includes：The silica of 10-20 parts by weight；The calcirm-fluoride of 1-3 parts by weight；The calcium sulfate of 2-6 parts by weight；AndThe potassium nitrate of 1-3 parts by weight.
- 5. according to the method for claim 1, it is characterised in that in step (1), the red mud slag and the chromium slag and The mixing quality ratio of the adjusting material is (50-70)：(10-25)：((10-40).
- 6. according to the method for claim 1, it is characterised in that in step (1), the temperature of the melt process is 1450-1500 degrees Celsius, time 2-3h.
- 7. according to the method for claim 1, it is characterised in that in step (2), the temperature of the clarification homogenizing processing is 1400-1450 degrees Celsius, time 1-2h.
- 8. according to the method for claim 1, it is characterised in that in step (3), the temperature of the annealing is 500- 600 degrees Celsius, the time is not less than 2h.
- 9. according to the method for claim 1, it is characterised in that in step (4), the temperature of the coring processing is 620- 690 degrees Celsius, time 2-4h, the temperature of the Crystallizing treatment is 730-860 degrees Celsius, time 2-4h.
- 10. a kind of green glass-ceramic, it is characterised in that the green glass-ceramic is using any one of claim 1-9 What described method was prepared.
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| CN (1) | CN107879633A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499203A (en) * | 2020-05-20 | 2020-08-07 | 冯承湖 | Method for manufacturing cast stone and cooperatively treating hazardous wastes by utilizing red mud |
| CN115716710A (en) * | 2021-08-25 | 2023-02-28 | 宝山钢铁股份有限公司 | Method for on-line harmless treatment of chromium-containing sludge by using thermal-state blast furnace slag |
-
2017
- 2017-12-04 CN CN201711260307.5A patent/CN107879633A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111499203A (en) * | 2020-05-20 | 2020-08-07 | 冯承湖 | Method for manufacturing cast stone and cooperatively treating hazardous wastes by utilizing red mud |
| CN115716710A (en) * | 2021-08-25 | 2023-02-28 | 宝山钢铁股份有限公司 | Method for on-line harmless treatment of chromium-containing sludge by using thermal-state blast furnace slag |
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