CN106698954A - Cordierite microcrystalline glass prepared from high carbon ferrochrome slag and coal gangue and preparation method of cordierite microcrystalline glass - Google Patents
Cordierite microcrystalline glass prepared from high carbon ferrochrome slag and coal gangue and preparation method of cordierite microcrystalline glass Download PDFInfo
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- CN106698954A CN106698954A CN201611192340.4A CN201611192340A CN106698954A CN 106698954 A CN106698954 A CN 106698954A CN 201611192340 A CN201611192340 A CN 201611192340A CN 106698954 A CN106698954 A CN 106698954A
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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
- 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
- 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
- C03C10/0036—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 SiO2, Al2O3 and a divalent metal oxide as main constituents
- C03C10/0045—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 SiO2, Al2O3 and a divalent metal oxide as main constituents containing SiO2, Al2O3 and MgO as main constituents
-
- 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
- C03C4/20—Compositions for glass with special properties for chemical resistant glass
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- Geochemistry & Mineralogy (AREA)
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- Ceramic Engineering (AREA)
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Abstract
The invention relates to a method for preparing cordierite microcrystalline glass from high carbon ferrochrome slag and coal gangue. The method includes the steps that the high carbon ferrochrome slag and the coal gangue are mixed and ground in proportion, and a mineral powder mixture is obtained; the obtained mineral powder mixture is calcined, Fe2O3 in the mixture is reduced into Fe3O4, and a calcined mineral powder mixture containing magnetic Fe3O4 is obtained; the obtained calcined mineral powder mixture is subjected to magnetic separation in a magnetic field to remove Fe3O4 in the mixture, and a deironed mineral powder mixture is obtained; the obtained deironed mineral powder mixture is put in a silicon-molybdenum rod high-temperature furnace, heating, melting and homogenizing are carried out, and a melted mixture is obtained; the obtained melted mixture is poured into a preheated die to be formed, and basic glass is obtained; the obtained basic glass is sequentially annealed, cored and crystallized, and the cordierite microcrystalline glass is obtained. The raw materials adopted for the method barely have economic cost, the technological process is simple, the product application range is wide, and economic value is high.
Description
Technical field
The invention belongs to devitrified glass preparation field, and more particularly, to one kind high carbon chromium scum and gangue
Cordierite glass-ceramic of preparation and preparation method thereof.
Background technology
With chromite as raw material, high carbon chromium scum can be discharged when producing high carbon ferro-chrome using mineral hot furnace, high carbon chromium scum is
A kind of solid slag containing chromium, under conditions of moist, oxygen is present, part trivalent Cr has the possibility for being oxidized to 6 valency Cr for it,
Under conditions of long-term rain washes away, soluble Cr6+The toxic wastewater of formation can be caused sternly to soil, underground water and rivers,lakes and seas
Heavily contaminated, therefore it is the major issue that Environmental Protection in China work faces that harmless resource utilization utilization is carried out to high carbon chromium scum.
The content of the invention
Regarding to the issue above, the present invention carries out the innoxious utilization of resources to high carbon chromium scum, that is, develop high carbon ferro-chrome
Slag produces the new technology of high performance material, and this technique is in the Cr in processing high carbon chromium scum, it is to be ensured that trivalent chromium is not oxidized
Into 6 valency chromium；The performance of material will get well simultaneously, and under the conditions of mechanical force, acid and alkali corrosion etc., Cr is all without being dissolved；And material
Also to possess certain economic worth.
A large amount of MgO, the Al contained in high carbon chromium scum2O3With SiO2, it is to prepare MgO-Al2O3-SiO2It is cordierite crystallite
The primary raw material of glass.In cordierite glass-ceramic, Cr2O3Can as the nucleating agent of cordierite crystallites, a large amount of cordierite crystallites and
Cr tights can be played splendid fixation by glass.Cordierite glass-ceramic has low thermal coefficient of expansion, excellent
Good mechanical property and good electrical insulation capability, with wide market prospects and high economic worth.High carbon ferro-chrome
SiO in slag2And Al2O3Content is relatively low with respect to cordierite glass-ceramic, therefore need to allocate into and contain SiO2And Al2O3Raw material, it is high
Contain a certain amount of Fe in carbon ferrochrome slag, Fe can make the color burn of devitrified glass, reduce the economic worth of devitrified glass.Therefore with
High carbon chromium scum prepares cordierite glass-ceramic for raw material, and Fe contents are preferably reduced first, then allocates into and contains SiO2And Al2O3
Raw material using fusion method reduction cordierite glass-ceramic.
At present not with high carbon chromium scum as raw material, except iron and the skill that other raw materials prepare cordierite glass-ceramic is allocated into
Art research.
The present invention is proposed with high carbon chromium scum and gangue as primary raw material, using MgO, Al in high carbon chromium scum2O3With
SiO2, and the SiO in gangue2、Al2O3Used as main chemical compositions, used as main reducing agent, reduction is removed the C in gangue
The new method of cordierite glass-ceramic is prepared after miscellaneous using fusion method.
According to an aspect of the present invention, there is provided a kind of side that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue
Method, comprises the following steps：
1) high carbon chromium scum and gangue are obtained into miberal powder mixture by proportioning mixing ore grinding；
2) by step 1) in the miberal powder mixture that obtains be calcined, make the Fe in mixture2O3It is reduced to Fe3O4, obtain
Contain magnetic Fe3O4Roasting after miberal powder mixture；
3) by step 2) in during miberal powder mixture carries out magnetic separation to remove mixture in magnetic field after the roasting that obtains
Fe3O4, obtain except miberal powder mixture after iron；
4) by step 3) in obtain except after iron miberal powder mixture be put into Si-Mo rod high temperature furnace, heating mixture is melted simultaneously
Homogenizing, obtains molten state mixture；
5) by step 4) in the molten state mixture that obtains be poured into the die for molding of preheating and obtain parent glass；
6) by step 5) in the parent glass that obtains annealed successively, coring and Crystallizing treatment, obtain cordierite crystallite
Glass.
According to one embodiment of present invention, step 1) in each group distribution ratio of miberal powder mixture be：High carbon chromium scum
40-45 weight portions, gangue 55-60 weight portions.
According to one embodiment of present invention, high carbon ferro-chrome cinder ladle includes the component of following proportioning：MgO24-40 weight portions,
Al2O316-25 weight portions, SiO232-38 weight portions, CaO 0.3-0.5 weight portions, Fe2O33-5 weight portions, Cr2O3 6-8
Weight portion.
According to one embodiment of present invention, gangue includes the component of following proportioning：SiO250-55 weight portions, Al2O3
15-25 weight portions, Fe2O33-5 weight portions, C 10-20 weight portions.
According to one embodiment of present invention, step 1) in high carbon chromium scum and gangue mixing ore grinding are made into powder particle size
Less than 200 mesh.
According to one embodiment of present invention, step 2) in sintering temperature be 500-520 DEG C, step 4) in melt temperature be
1500-1600 DEG C, step 5) in mold preheating temperature be 700-900 DEG C.
According to one embodiment of present invention, step 2) in roasting time be 30-50min, step 4) in heated
Time is 2-3h.
According to one embodiment of present invention, step 3) in magnetic field magnetic induction intensity be 1-2T.
According to one embodiment of present invention, the Nucleating Agent and reducing agent for being used in the method are respectively high carbon chromium scum
Cr2O3With the C in gangue.
According to another aspect of the present invention, also provide one kind and cordierite is prepared using above-mentioned high carbon chromium scum and gangue
The cordierite glass-ceramic of the method production of devitrified glass.
Had the following advantages that compared to prior art by using above-mentioned technical proposal, the present invention：
1) primary raw material of present invention synthesis devitrified glass is high carbon chromium scum and gangue, and the two is two kinds of zero costs
Waste resource；
2) present invention utilizes high carbon chromium scum and gangue in most chemical compositions, MgO, Al2O3、SiO2With
Cr2O3Deng main chemical compositions and Nucleating Agent respectively as devitrified glass；
3) present invention utilizes the carbon in gangue as Fe in raw material2O3Reducing agent, make Fe2O3Fe is reduced to by C3O4
Magnetic separation again is removed；
4) when the present invention ensures high-temperature fusion using the carbon in gangue, material system is in reducing atmosphere, originally in
Cr will not be oxidized into 6 poisonous valency Cr；
5) Cr in high carbon chromium scum of the invention is as Nucleating Agent because being firmly fixed, and Cr therein has high steady
It is qualitative, environmental pollution will not be caused into environment；
6) the cordierite glass-ceramic mechanical property of present invention preparation is good, wear resistence is good, acid-alkali-corrosive-resisting, with higher
Added value.
In a word, the raw material economics low cost that the method for the present invention is used, technological process is simple, and application range of products is wide
Wealthy, economic worth is high.The method of the present invention had both solved the problem of environmental pollution of high carbon chromium scum, and economic effect higher is created again
Benefit, while meeting the policy of " recycling economy " that country advocates.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will more in the description carried out to embodiment is combined with accompanying drawing
Plus substantially and be readily appreciated that, wherein：
Fig. 1 shows that high carbon chromium scum of the invention and gangue prepare the stream of the method for cordierite glass-ceramic
Journey schematic diagram.
Specific embodiment
It should be appreciated that embodiments of the invention shown in the exemplary embodiment are merely illustrative.Although in this hair
Only a small number of embodiments have been described in detail in bright, but those skilled in the art to be readily appreciated that and depart from the present invention in not essence
In the case of the teaching of theme, various modifications are feasible.Correspondingly, all such modifications should all be included in of the invention
In the range of.Without departing from the spirit of the invention, can be to the design of following exemplary embodiment, operating condition and ginseng
Number etc. makes others and replaces, changes, changes and delete.
The present invention provides a kind of with the method that high carbon chromium scum and gangue are Material synthesis devitrified glass.High carbon chromium scum
Main chemical compositions be MgO, Al2O3、SiO2, separately there is a small amount of CaO, Cr2O3、Fe2O3Deng.Closed by raw material of high carbon chromium scum
Into cordierite glass-ceramic, MgO, Al in high carbon chromium scum2O3、SiO2It is primary raw material, Cr2O3It is main Nucleating Agent；It is high
SiO in carbon ferrochrome slag2And Al2O3Content is relatively low with respect to cordierite glass-ceramic, and has a small amount of Fe impurity.
There is substantial amounts of solid waste gangue in China, and gangue contains a certain amount of C (20%) left and right, remaining inorganic matter composition master
To be SiO2、Al2O3, the two content sum is general more than 60%, separately there is a small amount of Fe2O3、CaO、MgO、TiO2、K2O and Na2O
Deng.
The present invention proposes to want raw material based on high carbon chromium scum, allocates solid waste resource gangue into and prepares devitrified glass to provide
Required extra SiO2And Al2O3, using the C in gangue by the Fe in high ferro ferrochrome slag and gangue2O3It is reduced to Fe3O4Magnetic
Blanking is gone, and remaining C serves as reducing agent at high temperature, and the new method of cordierite glass-ceramic is produced using fusion method.
The method that the present invention prepares cordierite glass-ceramic as raw material with high carbon chromium scum and gangue, technical process
As shown in figure 1, specific steps include：
1) high carbon chromium scum and gangue are obtained into miberal powder mixture by proportioning mixing ore grinding；
2) by step 1) in the miberal powder mixture that obtains be calcined, make the Fe in mixture2O3It is reduced to Fe3O4, obtain
Contain magnetic Fe3O4Roasting after miberal powder mixture；
3) by step 2) in during miberal powder mixture carries out magnetic separation to remove mixture in magnetic field after the roasting that obtains
Fe3O4, obtain except miberal powder mixture after iron；
4) by step 3) in obtain except after iron miberal powder mixture be put into Si-Mo rod high temperature furnace, heating mixture is melted simultaneously
Homogenizing, obtains molten state mixture；
5) by step 4) in the molten state mixture that obtains be poured into the die for molding of preheating and obtain parent glass；
6) by step 5) in the parent glass that obtains annealed successively, coring and Crystallizing treatment, obtain cordierite crystallite
Glass.
According to one embodiment of present invention, step 1) in each group distribution ratio of miberal powder mixture be：High carbon chromium scum
40-45 weight portions, gangue 55-60 weight portions.
According to one embodiment of present invention, high carbon ferro-chrome cinder ladle includes the component of following proportioning：MgO24-40 weight portions,
Al2O316-25 weight portions, SiO232-38 weight portions, CaO 0.3-0.5 weight portions, Fe2O33-5 weight portions, Cr2O3 6-8
Weight portion.
According to one embodiment of present invention, gangue includes the component of following proportioning：SiO250-55 weight portions, Al2O3
15-25 weight portions, Fe2O33-5 weight portions, C 10-20 weight portions.
According to one embodiment of present invention, step 1) in high carbon chromium scum and gangue mixing ore grinding are made into powder particle size
Less than 200 mesh.
According to one embodiment of present invention, step 2) in sintering temperature be 500-520 DEG C, step 4) in melt temperature be
1500-1600 DEG C, step 5) in mold preheating temperature be 700-900 DEG C.
According to one embodiment of present invention, step 2) in roasting time be 30-50min, step 4) in heated
Time is 2-3h.
According to one embodiment of present invention, step 3) in magnetic field magnetic induction intensity be 1-2T.
According to one embodiment of present invention, the Nucleating Agent and reducing agent for being used in the method are respectively high carbon chromium scum
Cr2O3With the C in gangue.
Referring to specific embodiment, the present invention will be described.
Embodiment one
From the high carbon chromium scum of Sichuan ferroalloy works, its component for containing following proportioning：MgO25.43 weight portions,
Al2O323.88 weight portions, SiO235.54 weight portions, the weight portions of CaO 0.33, Fe2O35.95 weight portions, Cr2O37.64 weights
Amount part；From Shanxi Pingshou gangue, its component for containing following proportioning：SiO251 weight portions, Al2O319 weight portions, Fe2O3
3.8 weight portions, the weight portions of C 15.
The gangue of the high carbon chromium scum of above-mentioned 43 weight portion and 57 weight portions is mixed, ore grinding makes powder particle size small
In 200 mesh, miberal powder mixture is obtained.Then mixture will be milled in 510 DEG C of temperature calcination 40min, will make the Fe in raw material2O3Turn
Turn to Fe3O4, obtain containing magnetic Fe3O4Roasting after miberal powder mixture.It is in magnetic induction intensity by miberal powder mixture after roasting
Magnetic separation is carried out in the magnetic field of 1T to remove Fe in mixture3O4, obtain except miberal powder mixture after iron.Then will except after iron miberal powder mix
Compound is put into Si-Mo rod high temperature furnace, and 3h is melted at 1550 DEG C, obtains molten state mixture.Molten state mixture is poured into
Annealed shaping obtains parent glass in 800 DEG C of moulds of preheating.The parent glass that will finally obtain is annealed successively, coring
And Crystallizing treatment, obtain cordierite glass-ceramic.
Embodiment two
From the high carbon chromium scum of Jilin factory, its component for containing following proportioning：The weight portions of MgO 40, Al2O3 16
Weight portion, SiO232 weight portions, the weight portions of CaO 0.3, Fe2O33.2 weight portions, Cr2O36 weight portions；From Shanxi Pingshuo Coal
Spoil, its component for containing following proportioning：SiO251 weight portions, Al2O319 weight portions, Fe2O33.8 weight portions, the weight of C 15
Part.
The gangue of the high carbon chromium scum of above-mentioned 40 weight portion and 60 weight portions is mixed, ore grinding makes powder particle size small
In 200 mesh, miberal powder mixture is obtained.Then mixture will be milled in 510 DEG C of temperature calcination 40min, will make the Fe in raw material2O3Turn
Turn to Fe3O4, obtain containing magnetic Fe3O4Roasting after miberal powder mixture.It is in magnetic induction intensity by miberal powder mixture after roasting
Magnetic separation is carried out in the magnetic field of 1T to remove Fe in mixture3O4, obtain except miberal powder mixture after iron.Then will except after iron miberal powder mix
Compound is put into Si-Mo rod high temperature furnace, and 3h is melted at 1550 DEG C, obtains molten state mixture.Molten state mixture is poured into
Annealed shaping obtains parent glass in 800 DEG C of moulds of preheating.The parent glass that will finally obtain is annealed successively, coring
And Crystallizing treatment, obtain cordierite glass-ceramic.
Embodiment three
From the high carbon chromium scum of Jilin factory, its component for containing following proportioning：The weight portions of MgO 24, Al2O3 20
Weight portion, SiO235 weight portions, the weight portions of CaO 0.3, Fe2O34.3 weight portions, Cr2O38 weight portions；From Shanxi Pingshuo Coal
Spoil, its component for containing following proportioning：SiO250 weight portions, Al2O325 weight portions, Fe2O35 weight portions, the weight portions of C 10.
The gangue of the high carbon chromium scum of above-mentioned 45 weight portion and 55 weight portions is mixed, ore grinding makes powder particle size small
In 200 mesh, miberal powder mixture is obtained.Then mixture will be milled in 520 DEG C of temperature calcination 30min, will make the Fe in raw material2O3Turn
Turn to Fe3O4, obtain containing magnetic Fe3O4Roasting after miberal powder mixture.It is in magnetic induction intensity by miberal powder mixture after roasting
Magnetic separation is carried out in the magnetic field of 1.5T to remove Fe in mixture3O4, obtain except miberal powder mixture after iron.Then will be except miberal powder after iron
Mixture is put into Si-Mo rod high temperature furnace, and 2h is melted at 1600 DEG C, obtains molten state mixture.Molten state mixture is poured into
Annealed shaping obtains parent glass in 700 DEG C of moulds of preheating.The parent glass that will finally obtain is annealed successively, coring
And Crystallizing treatment, obtain cordierite glass-ceramic.
Example IV
From the high carbon chromium scum of Sichuan ferroalloy works, its component for containing following proportioning：MgO26.3 weight portions,
Al2O325 weight portions, SiO238 weight portions, the weight portions of CaO 0.48, Fe2O35 weight portions, Cr2O36.8 weight portions；From mountain
Xiping the first day of the lunar month gangue, its component for containing following proportioning：SiO255 weight portions, Al2O315 weight portions, Fe2O33 weight portions, C
20 weight portions.
The gangue of the high carbon chromium scum of above-mentioned 42 weight portion and 56 weight portions is mixed, ore grinding makes powder particle size small
In 200 mesh, miberal powder mixture is obtained.Then mixture will be milled in 500 DEG C of temperature calcination 35min, will make the Fe in raw material2O3Turn
Turn to Fe3O4, obtain containing magnetic Fe3O4Roasting after miberal powder mixture.It is in magnetic induction intensity by miberal powder mixture after roasting
Magnetic separation is carried out in the magnetic field of 2T to remove Fe in mixture3O4, obtain except miberal powder mixture after iron.Then will except after iron miberal powder mix
Compound is put into Si-Mo rod high temperature furnace, and 2.5h is melted at 1500 DEG C, obtains molten state mixture.Molten state mixture is poured into
Annealed shaping obtains parent glass in 900 DEG C of moulds of preheating.The parent glass that will finally obtain is annealed successively, coring
And Crystallizing treatment, obtain cordierite glass-ceramic.
Embodiment five
From the high carbon chromium scum of Sichuan ferroalloy works, its component for containing following proportioning：The weight portions of MgO 30, Al2O3
20 weight portions, SiO235 weight portions, the weight portions of CaO 0.5, Fe2O33 weight portions, Cr2O37.2 weight portions；From Shanxi Pingshou
Gangue, its component for containing following proportioning：SiO253 weight portions, Al2O320 weight portions, Fe2O34 weight portions, the weight of C 15
Part.
The gangue of the high carbon chromium scum of above-mentioned 45 weight portion and 60 weight portions is mixed, ore grinding makes powder particle size small
In 200 mesh, miberal powder mixture is obtained.Then mixture will be milled in 510 DEG C of temperature calcination 50min, will make the Fe in raw material2O3Turn
Turn to Fe3O4, obtain containing magnetic Fe3O4Roasting after miberal powder mixture.It is in magnetic induction intensity by miberal powder mixture after roasting
Magnetic separation is carried out in the magnetic field of 1T to remove Fe in mixture3O4, obtain except miberal powder mixture after iron.Then will except after iron miberal powder mix
Compound is put into Si-Mo rod high temperature furnace, and 2h is melted at 1550 DEG C, obtains molten state mixture.Molten state mixture is poured into
Annealed shaping obtains parent glass in 800 DEG C of moulds of preheating.The parent glass that will finally obtain is annealed successively, coring
And Crystallizing treatment, obtain cordierite glass-ceramic.
Presently preferred embodiments of the present invention is the foregoing is only, not for limiting practical range of the invention；If do not taken off
From the spirit and scope of the present invention, the present invention is modified or equivalent, all should covered in the claims in the present invention
In the middle of protection domain.
Claims (10)
1. a kind of method that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue, it is characterised in that including following step
Suddenly：
1) high carbon chromium scum and gangue are obtained into miberal powder mixture by proportioning mixing ore grinding；
2) by step 1) in the miberal powder mixture that obtains be calcined, make the Fe in mixture2O3It is reduced to Fe3O4, contained
Magnetic Fe3O4Roasting after miberal powder mixture；
3) by step 2) in after the roasting that obtains miberal powder mixture magnetic separation is carried out in magnetic field to remove the Fe in mixture3O4, obtain
The miberal powder mixture to after except iron；
4) by step 3) in obtain except after iron miberal powder mixture be put into Si-Mo rod high temperature furnace, heating mixture melting and
Change, obtain molten state mixture；
5) by step 4) in the molten state mixture that obtains be poured into the die for molding of preheating and obtain parent glass；
6) by step 5) in the parent glass that obtains annealed successively, coring and Crystallizing treatment, obtain cordierite glass-ceramic.
2. the method that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue according to claim 1, its feature
Be, the step 1) in each group distribution ratio of the miberal powder mixture be：High carbon chromium scum 40-45 weight portions, gangue
55-60 weight portions.
3. the method that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue according to claim 2, its feature
It is that the high carbon ferro-chrome cinder ladle includes the component of following proportioning：MgO 24-40 weight portions, Al2O316-25 weight portions, SiO2
32-38 weight portions, CaO 0.3-0.5 weight portions, Fe2O33-5 weight portions, Cr2O36-8 weight portions.
4. the method that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue according to claim 2, its feature
It is that the gangue includes the component of following proportioning：SiO250-55 weight portions, Al2O315-25 weight portions, Fe2O3 3-5
Weight portion, C 10-20 weight portions.
5. the method that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue according to claim 1, its feature
Be, the step 1) in by high carbon chromium scum and gangue mixing ore grinding make powder particle size be less than 200 mesh.
6. the method that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue according to claim 1, its feature
Be, the step 2) in sintering temperature be 500-520 DEG C, the step 4) in melt temperature be 1500-1600 DEG C, the step
It is rapid 5) in mold preheating temperature be 700-900 DEG C.
7. the method that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue according to claim 1, its feature
Be, the step 2) in roasting time be 30-50min, the step 4) in time for being heated be 2-3h.
8. the method that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue according to claim 1, its feature
Be, the step 3) in magnetic field magnetic induction intensity be 1-2T.
9. the method that cordierite glass-ceramic is prepared with high carbon chromium scum and gangue according to claim 1, its feature
It is Cr that the Nucleating Agent that is used in methods described and reducing agent are respectively the high carbon chromium scum2O3In the gangue
C。
10. a kind of use prepares cordierite crystallite with high carbon chromium scum and gangue as claimed in any one of claims 1-9 wherein
The cordierite glass-ceramic of the method production of glass.
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| CN201611192340.4A CN106698954A (en) | 2016-12-21 | 2016-12-21 | Cordierite microcrystalline glass prepared from high carbon ferrochrome slag and coal gangue and preparation method of cordierite microcrystalline glass |
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| CN201611192340.4A CN106698954A (en) | 2016-12-21 | 2016-12-21 | Cordierite microcrystalline glass prepared from high carbon ferrochrome slag and coal gangue and preparation method of cordierite microcrystalline glass |
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| CN101914639A (en) * | 2010-09-08 | 2010-12-15 | 北京科技大学 | Method for recycling iron on line from iron-containing industrial slag and preparing glass ceramics frit |
| CN105152536A (en) * | 2015-09-21 | 2015-12-16 | 北京科技大学 | Method for compounding microcrystalline glass materials by means of ferrochrome slags |
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