CN107902907A - Red microcrystalline glass and preparation method thereof - Google Patents

Red microcrystalline glass and preparation method thereof Download PDF

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Publication number
CN107902907A
CN107902907A CN201711261544.3A CN201711261544A CN107902907A CN 107902907 A CN107902907 A CN 107902907A CN 201711261544 A CN201711261544 A CN 201711261544A CN 107902907 A CN107902907 A CN 107902907A
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parts
weight
red
glass
microcrystalline glass
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CN201711261544.3A
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Inventor
马冬阳
陈士朝
孙辉
边妙莲
李亚奇
苏双青
吴道洪
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Jiangsu Province Metallurgical Design Institute Co Ltd
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Jiangsu Province Metallurgical Design Institute Co Ltd
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Priority to CN201711261544.3A priority Critical patent/CN107902907A/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
    • C03B32/02—Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
    • 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
    • C03C1/04—Opacifiers, e.g. fluorides or phosphates; Pigments
    • 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
    • C03C10/0063—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 containing waste materials, e.g. slags
    • 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 red microcrystalline glass and preparation method thereof, this method includes：(1) red mud slag is mixed with the adjusting material containing cupric oxide, to obtain mixed material；(2) mixed material is heated to melting and kept the temperature, to obtain melting charge；(3) melting charge is clarified, to obtain clarification material；(4) cast molding is expected into the clarification and anneals, to obtain black parent glass；(5) the black parent glass is heat-treated, to obtain red microcrystalline glass.The red microcrystalline glass that in beautiful color, intensity is high and the porosity is small can be prepared using this method, realize the resource reutilization of red mud slag.

Description

Red microcrystalline glass and preparation method thereof
Technical field
The invention belongs to devitrified glass preparation field, and specifically, the present invention relates to red microcrystalline glass and its preparation side Method.
Background technology
Red mud is the waste residue discharged in alumina producing industry, its complicated component, mainly contain CaO, Al2O3, SiO2, Fe2O3, Na2O, TiO2 etc..Red mud at present is difficult to develop since alkali content is higher, and main processing ways are accumulation, thus, A large amount of soils are occupied, also generate serious environmental problem.
Red mud slag is the product that red mud is obtained by " rotary hearth furnace carbon thermal reduction-gas furnace melts office reason red mud " technique, The technique is by red mud with addition of carbon dust and other auxiliary agent pelletizings, and pelletizing enters rotary hearth furnace and carries out carbon thermal reduction at high temperature, in red mud Fe2O3 will be reduced to metal Fe, and reduction gained metallized pellet divides stove to carry out slag sluicing system, obtains into combustion type high temperature melting Metal Fe and two kinds of products of red mud slag containing FeO.
Red mud slag is mainly containing CaO, MgO, SiO2, Al2O3, Na2O, TiO2, FeO and a small amount of residual C.The change of red mud slag Study it is point similar to calcium alkali silica devitrified glass, after a certain amount of calcium source, silicon source, fluxing agent batch mixing, by melting, clarifying, Cast molding annealing and heat treatment step can prepare calcium alkali silica devitrified glass, but the residual C in slag may reduce FeO For metal Fe, the coefficient of expansion of metal Fe is much larger than the coefficient of expansion of glass matrix, and glass matrix can be caused to be sent out in heat treatment Raw fragmentation, it is therefore necessary to promote metal Fe to be converted to FeO using oxidant.
In addition in the case where not adding colouring agent, devitrified glass prepared by red mud slag is generally nattierblue, though there is U.S. The decorative pattern of sight, but devitrified glass is not met as requirement of the building and ornament materials to color and luster, it is therefore desirable to devitrified glass is carried out Coloring.Red microcrystalline glass, but the colouring agent can be promoted to generate by being incorporated the red stains such as cadmium red into adjusting material Boiling point is very low, there is stronger volatilization phenomenon, can cause the waste of raw material and the lifting of financial cost.
Therefore, the technology of preparing of existing red microcrystalline glass is further improved.
The content of the invention
It is contemplated that solve at least some of the technical problems in related technologies.For this reason, the present invention One purpose is to propose a kind of red microcrystalline glass and preparation method thereof.It can be prepared using this method in beautiful color, strong Degree height and the small red microcrystalline glass of the porosity, realize the resource reutilization of red mud slag.
In one aspect of the invention, the present invention proposes a kind of method for preparing red microcrystalline glass, according to the present invention Embodiment, this method includes：
(1) red mud slag is mixed with the adjusting material containing cupric oxide, to obtain mixed material；
(2) mixed material is heated to melting and kept the temperature, to obtain melting charge；
(3) melting charge is clarified, to obtain clarification material；
(4) cast molding is expected into the clarification and anneals, to obtain black parent glass；
(5) the black parent glass is heat-treated, to obtain red microcrystalline glass.
The method for preparing red microcrystalline glass according to embodiments of the present invention is by by adjusting material and red mud containing cupric oxide Slag mixed melting, CaO and SiO in the adjusting material containing cupric oxide2The CaO and SiO of content deficiency in red mud slag can be supplemented2, And CaF therein2Raw material can be promoted to melt, CaSO4And KNO3It can at high temperature decompose and produce gas so as to promote melt to clarify, Simultaneous oxidation copper can decompose at high temperature produces Cu2O and O2, Cu2O presents red, is a kind of red stain, O2Then can be by original Metal Fe in material is oxidized to FeO, also the carbon residue in raw material can be made to be oxidized to carbon monoxide, and carbon monoxide and oxygen can promote Micro-bubble, which floats, into fused raw material discharges, and promotes raw material clarification.Thus, using this method can be prepared it is in beautiful color, Intensity height and the small red microcrystalline glass of the porosity, realize the resource reutilization of red mud slag.
In addition, the method according to the above embodiment of the present invention for preparing red microcrystalline glass 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 CaO of 10-25 parts by weight； The MgO of 2-7 parts by weight；The SiO of 20-55 parts by weight2；The Al of 10-30 parts by weight2O3；The Na of 1-8 parts by weight2O；2-10 parts by weight TiO2；The FeO of 0.5-5 parts by weight, and the residual C of 0.1-0.5 parts by weight.Thus, available for preparing devitrified glass.
In some embodiments of the invention, in step (1), the adjusting material containing cupric oxide includes：3-21 weight The CaO of part；The SiO of 8-45 parts by weight2；The CaF of 0.5-3 parts by weight2；The CaSO of 0.5-3 parts by weight4；0.5-3 parts by weight KNO3, and the CuO of 3-12 parts by weight.Thus, be conducive to improve the grade of red microcrystalline glass.
In some embodiments of the invention, in step (1), the red mud slag and the adjusting material containing cupric oxide Mixing quality ratio be 1：(0.3-0.6).Thus, it can further improve the grade of red microcrystalline glass.
In some embodiments of the invention, in step (2), the melting temperature is 1420-1500 degrees Celsius, insulation Time is 1-3h.Thus, it can further improve the grade of red microcrystalline glass.
In some embodiments of the invention, in step (3), the clarifying temp is 1360-1420 degrees Celsius, the time For 1-3h.Thus, it can further improve the grade of red microcrystalline glass.
In some embodiments of the invention, in step (4), the annealing temperature is 450-550 degrees Celsius, and the time is 2-4h.Thus, it can further improve the grade of red microcrystalline glass.
In some embodiments of the invention, in step (5), the heat treatment includes coring processing and Crystallizing treatment. Thus, it can further improve the grade of red microcrystalline glass.
In some embodiments of the invention, in step (5), the coring processing is to be protected under 580-650 degrees Celsius Warm 2-4h.Thus, it can further improve the grade of red microcrystalline glass.
In some embodiments of the invention, in step (5), the Crystallizing treatment is to be protected under 700-850 degrees Celsius Warm 2-4h.Thus, it can further improve the grade of red microcrystalline glass.
In another aspect of the invention, the present invention proposes a kind of red microcrystalline glass.According to an embodiment of the invention, The red microcrystalline glass is prepared using the above-mentioned method for preparing red microcrystalline glass.Thus, can obtain with color and luster The red microcrystalline glass of the advantages that beauty, small intensity height and porosity, realizes the resource reutilization of red mud slag.
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 red microcrystalline glass.
Embodiment
The embodiment of the present invention is 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 has the function of same or like element.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 red microcrystalline glass, according to the present invention Embodiment, with reference to figure 1, this method includes：
S100：Red mud slag is mixed with the adjusting material containing cupric oxide
In the step, red mud slag is mixed with the adjusting material containing cupric oxide, to obtain mixed material.Thus, can show Write the contact area of the adjusting material of increase red mud slag and carbonaceous powder.
According to one embodiment of present invention, red mud slag can include：The CaO of 10-25 parts by weight；2-7 parts by weight MgO；The SiO of 20-55 parts by weight2；The Al of 10-30 parts by weight2O3；The Na of 1-8 parts by weight2O；The TiO of 2-10 parts by weight2；0.5-5 The FeO of parts by weight, and the residual C of 0.1-0.5 parts by weight.The chemical composition is similar to calcium alkali silica devitrified glass, so as to pass through Contain CaO, SiO with addition of a certain amount of into red mud slag2, fluxing agent and fining agent adjusting material, and by melting, being homogenized, Clarification, cast molding, heat treatment step prepare calcium alkali silica devitrified glass.
According to still a further embodiment, the adjusting material containing cupric oxide can include：The CaO of 3-21 parts by weight；8- The SiO of 45 parts by weight2；The CaF of 0.5-3 parts by weight2；The CaSO of 0.5-3 parts by weight4；The KNO of 0.5-3 parts by weight3, and 3-12 weights Measure the CuO of part.Wherein, CaO and SiO2The CaO and SiO of content deficiency in red mud slag can be supplemented2, CaF2Raw material can be promoted to melt Melt, CaSO4And KNO3It can at high temperature decompose and produce gas so as to promote melt to clarify, simultaneous oxidation copper can decompose at high temperature Produce Cu2O and O2, Cu2O presents red, is a kind of red stain, O2Then the metal Fe in raw material can be oxidized to FeO, The carbon residue in raw material can be made to be oxidized to carbon monoxide, and carbon monoxide and oxygen can promote micro-bubble in fused raw material to float Discharge, promotes raw material clarification.
According to still another embodiment of the invention, red mud slag and the mixing quality ratio of the adjusting material containing cupric oxide can be 1：(0.3-0.6).Inventor has found, when red mud slag and the adjusting material containing cupric oxide mixing quality than it is excessive when, cupric oxide Content relative deficiency, it decomposes the O produced2, can not be substantially oxidized metal Fe and C in red mud slag, remaining metal Fe and C can produce harmful effect to the performance of devitrified glass；When red mud slag and the mixing quality ratio of the adjusting material containing cupric oxide When too low, cupric oxide and fluxing agent, clarification agent content relative surplus, it can significantly improve the high temperature corrosion of melt, reduce and contain Fill the service life of the refractory material of melt.
S200：Mixed material is heated to melting and kept the temperature
In the step, mixed material is heated to melting and kept the temperature, to obtain melting charge.Inventor has found, containing oxidation CaF in the adjusting material of copper2Raw material can be promoted to melt, CaSO4And KNO3It can at high temperature decompose and produce gas so as to promote melt Clarification, simultaneous oxidation copper can decompose at high temperature produces Cu2O and O2, Cu2O presents red, is a kind of red stain, O2Then may be used Metal Fe in raw material is oxidized to FeO, also the carbon residue in raw material can be made to be oxidized to carbon monoxide, and carbon monoxide and oxygen are equal It can promote micro-bubble floating discharge in fused raw material, promote raw material clarification.
According to one embodiment of present invention, melting temperature can be 1420-1500 degrees Celsius, and soaking time can be 1- 3h.Thus, it can further improve the grade of red microcrystalline glass.Inventor has found that at this temperature, mixed material can fully melt Melt, and in the soaking time, be conducive to red mud slag and react with the adjusting material containing cupric oxide, improve the product of melting charge Position.
S300：Melting charge is clarified
In the step, melting charge is clarified, to obtain clarification material.Inventor's discovery, CaSO4And KNO3Can be at high temperature Decompose and produce gas, cupric oxide can also decompose generation oxygen at high temperature, which can be oxidized to an oxygen by the carbon residue in raw material Change carbon, thus, these gases can promote micro-bubble floating discharge in fused raw material, promote melting charge clarification, clarified Material.
According to one embodiment of present invention, clarifying temp can be 1360-1420 degrees Celsius, and the time can be 1-3h. Inventor has found that clarifying temp is excessive or settling time is too short, and not having makes melt cooling, melt volume contraction, internal gas The discharged effect of body；When clarifying temp is too low, melt viscosity dramatically increases, and melt internal gas can not break through sticky melt quilt Discharge；When settling time is long, corrosion of the melt to refractory material will dramatically increase.
S400：By clarification material cast molding and anneal
In the step, by clarification material cast molding and anneal, to obtain black parent glass.
According to one embodiment of present invention, annealing temperature can be 450-550 degrees Celsius, and the time can be 2-4h.Hair A person of good sense has found that annealing temperature is excessive, and crystallization can occur in advance for parent glass, and inside produces crystal, to follow-up heat treatment Technique produces harmful effect；Annealing temperature is too low, the too fast easily fragmentation of parent glass cooling；Annealing time is too short, parent glass Internal stress is not discharged fully, the easy fragmentation of parent glass；Annealing time is long, can reduce production efficiency.
S500：Black parent glass is heat-treated
In the step, black parent glass is heat-treated, to obtain red microcrystalline glass.The red microcrystalline glass It is in beautiful color, intensity is high and the porosity is small, be a kind of good building decoration material.Hereby it is achieved that the money of red mud slag Source recycles.
According to one embodiment of present invention, heat treatment can include coring processing and Crystallizing treatment.Inventor's discovery, core It is that parent glass is kept the temperature under certain nucleation temperature to change processing, makes to produce a large amount of uniform nucleus inside parent glass, brilliant It is that the parent glass for generating a large amount of nucleus is kept the temperature under certain crystallization temperature to change processing, grows into nucleus a large amount of equal Even small crystal.
According to still a further embodiment, coring processing can be that 2-4h, crystallization are kept the temperature under 580-650 degrees Celsius Processing can be to keep the temperature 2-4h under 700-850 degrees Celsius.Inventor find, coring treatment temperature and Crystallizing treatment temperature it is even by The differential thermal analysis result of parent glass determines, the too high or too low formation for being unfavorable for nucleus and crystal are grown up, soaking time Long to cause crystal abnormal growth, this will cause devitrified glass toughness to reduce, brittleness increase, and soaking time crosses section, nucleus number Amount can be than relatively low, and crystal cannot fully grow up.
The method for preparing red microcrystalline glass according to embodiments of the present invention is by by adjusting material and red mud containing cupric oxide Slag mixed melting, CaO and SiO in the adjusting material containing cupric oxide2The CaO and SiO of content deficiency in red mud slag can be supplemented2, And CaF therein2Raw material can be promoted to melt, CaSO4And KNO3It can at high temperature decompose and produce gas so as to promote melt to clarify, Simultaneous oxidation copper can decompose at high temperature produces Cu2O and O2, Cu2O presents red, is a kind of red stain, O2Then can be by original Metal Fe in material is oxidized to FeO, also the carbon residue in raw material can be made to be oxidized to carbon monoxide, and carbon monoxide and oxygen can promote Micro-bubble, which floats, into fused raw material discharges, and promotes raw material clarification.Thus, using this method can be prepared it is in beautiful color, Intensity height and the small red microcrystalline glass of the porosity, realize the resource reutilization of red mud slag.
In another aspect of the invention, the present invention proposes a kind of red microcrystalline glass.According to an embodiment of the invention, The red microcrystalline glass is prepared using the above-mentioned method for preparing red microcrystalline glass.Thus, can obtain with color and luster The red microcrystalline glass of the advantages that beauty, small intensity height and porosity, realizes the resource reutilization of red mud slag.Need what is illustrated It is, it is above-mentioned to be equally applicable to the red microcrystalline glass for the described feature and advantage of method for preparing red microcrystalline glass, Details are not described herein again.
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
Red mud slag of the red mud through " rotary hearth furnace reduction-gas furnace melt point " processing generation is selected as raw material, red mud slag Component be：The CaO of 15 parts by weight, the MgO of 3 parts by weight, the SiO of 37 parts by weight2, 12 parts by weight Al2O3, 4 parts by weight Na2O, the TiO of 4 parts by weight2, the FeO of 5 parts by weight and the residual C of 0.2 parts by weight.The component of adjusting material containing cupric oxide is：12 weights Measure the CaO, the SiO of 23 parts by weight of part2, 1 parts by weight CaF2, 1 parts by weight CaSO4, 1 parts by weight KNO3And 10 parts by weight CuO.
72 parts of red mud slag and 28 parts of the adjusting material containing cupric oxide are taken, is mixed uniformly, obtains mixed material；So Mixed material is heated to 1450 DEG C afterwards, when insulation 2 is small after melting, obtains melting charge；Then melting charge is cooled to 1380 DEG C, And keep the temperature 2 it is small when clarified, obtain clarification material；Cast molding then is expected into clarification, when 530 DEG C of annealing 2 are small, obtains black Parent glass；Finally black parent glass is kept the temperature respectively at 630 DEG C, 820 DEG C 2 it is small when, complete at coring processing and crystallization Reason, up to red microcrystalline glass.
Red microcrystalline glass made from the present embodiment, color are middle red, bending strength 98MPa, the porosity be less than 0.3%.
Embodiment 2
Red mud slag of the red mud through " rotary hearth furnace reduction-gas furnace melt point " processing generation is selected as raw material, red mud slag Component be：The CaO of 16 parts by weight, the MgO of 4 parts by weight, the SiO of 27 parts by weight2, 21 parts by weight Al2O3, 5 parts by weight Na2O, the TiO of 5 parts by weight2, the FeO of 4 parts by weight and the residual C of 0.5 parts by weight.The component of adjusting material containing cupric oxide is：14 weights Measure the CaO, the SiO of 26 parts by weight of part2, 2 parts by weight CaF2, 1 parts by weight CaSO4, 1 parts by weight KNO3And 12 parts by weight CuO.
68 parts of red mud slag and 32 parts of the adjusting material containing cupric oxide are taken, is mixed uniformly, obtains mixed material；So Mixed material is heated to 1470 DEG C afterwards, when insulation 2 is small after melting, obtains melting charge；Then melting charge is cooled to 1410 DEG C, And keep the temperature 2 it is small when clarified, obtain clarification material；Cast molding then is expected into clarification, when 530 DEG C of annealing 2 are small, obtains black Parent glass；Finally black parent glass is kept the temperature respectively at 630 DEG C, 830 DEG C 2 it is small when, complete at coring processing and crystallization Reason, up to red microcrystalline glass.
Red microcrystalline glass made from the present embodiment, color are bois de rose, bending strength 98MPa, the porosity be less than 0.5%.
Embodiment 3
Red mud slag of the red mud through " rotary hearth furnace reduction-gas furnace melt point " processing generation is selected as raw material, red mud slag Component be：The CaO of 15 parts by weight, the MgO of 2 parts by weight, the SiO of 50 parts by weight2, 10 parts by weight Al2O3, 5 parts by weight Na2O, the TiO of 8 parts by weight2, the FeO of 0.5 parts by weight and the residual C of 0.3 parts by weight.The component of adjusting material containing cupric oxide is：16 The SiO of the CaO of parts by weight, 18 parts by weight2, 2 parts by weight CaF2, 1 parts by weight CaSO4, 3 parts by weight KNO3And 8 parts by weight CuO.
70 parts of red mud slag and 30 parts of the adjusting material containing cupric oxide are taken, is mixed uniformly, obtains mixed material；So Mixed material is heated to 1500 DEG C afterwards, when insulation 2 is small after melting, obtains melting charge；Then melting charge is cooled to 1420 DEG C, And keep the temperature 2 it is small when clarified, obtain clarification material；Cast molding then is expected into clarification, when 530 DEG C of annealing 3 are small, obtains black Parent glass；Finally black parent glass is kept the temperature respectively at 610 DEG C, 820 DEG C 3 it is small when and 2 it is small when, complete coring processing and Crystallizing treatment, up to red microcrystalline glass.
Red microcrystalline glass made from the present embodiment, color are kermesinus, bending strength 90MPa, the porosity be less than 0.3%.
Embodiment 4
Red mud slag of the red mud through " rotary hearth furnace reduction-gas furnace melt point " processing generation is selected as raw material, red mud slag Component be：The CaO of 12 parts by weight, the MgO of 2 parts by weight, the SiO of 40 parts by weight2, 10 parts by weight Al2O3, 3 parts by weight Na2O, the TiO of 3 parts by weight2, the FeO of 3 parts by weight and the residual C of 0.2 parts by weight.The component of adjusting material containing cupric oxide is：20 weights Measure the CaO, the SiO of 12 parts by weight of part2, 2 parts by weight CaF2, 2 parts by weight CaSO4, 1 parts by weight KNO3And 9 parts by weight CuO。
70 parts of red mud slag and 30 parts of the adjusting material containing cupric oxide are taken, is mixed uniformly, obtains mixed material；So Mixed material is heated to 1460 DEG C afterwards, when insulation 2 is small after melting, obtains melting charge；Then melting charge is cooled to 1370 DEG C, And keep the temperature 2 it is small when clarified, obtain clarification material；Cast molding then is expected into clarification, when 500 DEG C of annealing 2 are small, obtains black Parent glass；Finally black parent glass is kept the temperature respectively at 650 DEG C, 810 DEG C 2 it is small when, complete at coring processing and crystallization Reason, up to red microcrystalline glass.
Red microcrystalline glass made from the present embodiment, color for red, bending strength 95MPa, the porosity be 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 of the present invention or example.In the present specification, schematic expression of the above terms is not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office Combined in an appropriate manner in one or more embodiments or example.In addition, without conflicting with each other, the skill of this area Art personnel can be tied the different embodiments or example described in this specification and different embodiments or exemplary feature Close and combine.
Although the embodiment of the present invention has 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, those of ordinary skill in the art within the scope of the invention can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (10)

  1. A kind of 1. method for preparing red microcrystalline glass, it is characterised in that including：
    (1) red mud slag is mixed with the adjusting material containing cupric oxide, to obtain mixed material；
    (2) mixed material is heated to melting and kept the temperature, to obtain melting charge；
    (3) melting charge is clarified, to obtain clarification material；
    (4) cast molding is expected into the clarification and anneals, to obtain black parent glass；
    (5) the black parent glass is heat-treated, to obtain red microcrystalline glass.
  2. 2. according to the method described in claim 1, it is characterized in that, in step (1), the red mud slag includes：
    The CaO of 10-25 parts by weight；
    The MgO of 2-7 parts by weight；
    The SiO of 20-55 parts by weight2；
    The Al of 10-30 parts by weight2O3；
    The Na of 1-8 parts by weight2O；
    The TiO of 2-10 parts by weight2；
    The FeO of 0.5-5 parts by weight, and
    The residual C of 0.1-0.5 parts by weight.
  3. 3. according to the method described in claim 2, it is characterized in that, in step (1), the adjusting material bag containing cupric oxide Include：
    The CaO of 3-21 parts by weight；
    The SiO of 8-45 parts by weight2；
    The CaF of 0.5-3 parts by weight2；
    The CaSO of 0.5-3 parts by weight4；
    The KNO of 0.5-3 parts by weight3, and
    The CuO of 3-12 parts by weight.
  4. 4. according to the method described in claim 3, it is characterized in that, in step (1), the red mud slag is with described containing oxidation The mixing quality ratio of the adjusting material of copper is 1：(0.3-0.6).
  5. 5. according to the method described in claim 1, it is characterized in that, in step (2), the melting temperature is 1420-1500 Degree Celsius, soaking time 1-3h.
  6. 6. according to the method described in claim 1, it is characterized in that, in step (3), the clarifying temp is 1360-1420 Degree Celsius, time 1-3h.
  7. 7. according to the method described in claim 1, it is characterized in that, in step (4), the annealing temperature is taken the photograph for 450-550 Family name's degree, time 2-4h.
  8. 8. the method according to claim 1, it is characterised in that in step (5), it is described heat treatment include coring processing with Crystallizing treatment.
  9. 9. according to the method described in claim 8, it is characterized in that, in step (5), the coring processing is in 580-650 2-4h is kept the temperature under degree Celsius；
    Optional, the Crystallizing treatment is to keep the temperature 2-4h under 700-850 degrees Celsius.
  10. 10. a kind of red microcrystalline glass, it is characterised in that the red microcrystalline glass is using any one of claim 1-9 institute What the method stated was prepared.
CN201711261544.3A 2017-12-04 2017-12-04 Red microcrystalline glass and preparation method thereof Pending CN107902907A (en)

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CN116715442A (en) * 2023-05-29 2023-09-08 武汉理工大学 Red microcrystalline glass based on gangue solid waste and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116715442A (en) * 2023-05-29 2023-09-08 武汉理工大学 Red microcrystalline glass based on gangue solid waste and preparation method thereof

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