CN106673447A - Diopside microcrystalline glass prepared from red mud and coal gangue and preparation method of diopside microcrystalline glass - Google Patents
Diopside microcrystalline glass prepared from red mud and coal gangue and preparation method of diopside microcrystalline glass Download PDFInfo
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- CN106673447A CN106673447A CN201611190686.0A CN201611190686A CN106673447A CN 106673447 A CN106673447 A CN 106673447A CN 201611190686 A CN201611190686 A CN 201611190686A CN 106673447 A CN106673447 A CN 106673447A
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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
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/02—Other methods of shaping glass by casting molten glass, e.g. injection moulding
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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
- C03C1/002—Use of waste materials, e.g. slags
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Abstract
The invention relates to a method for preparing diopside microcrystalline glass from red mud and coal gangue. The method comprises the steps as follows: mixing the red mud and coal gangue in a ratio for mineral grinding to obtain a mineral powder mixture; calcining the obtained mineral powder mixture, and reducing Fe2O3 in the mixture into Fe3O4 to obtain a calcined mineral powder mixture containing magnetic Fe3O4; performing magnetic separation on the obtained calcined mineral powder mixture in a magnetic field to remove Fe3O4 in the mixture to obtain a mineral powder mixture with iron removed; putting the mineral powder mixture with iron removed in a silicon-molybdenum rod high-temperature furnace, and heating, melting and homogenizing the mineral powder mixture in a non-oxidizing atmosphere to obtain a molten mixture; pouring the obtained molten mixture into a preheated mold for forming to obtain base glass; performing annealing, nucleation and crystallization on the base glass sequentially to obtain the diopside microcrystalline glass. The synthetic raw materials are zero-cost, and the synthesized product diopside microcrystalline glass has a higher added value.
Description
Technical field
The invention belongs to devitrified glass preparation field, and prepare more particularly, to a kind of use red mud and gangue
Diopside devitrified glass and preparation method thereof.
Background technology
Red mud is the waste residue discharged in alumina producing industry, and its granule is thinner, is dehydrated very difficult.The accumulation of red mud is accounted for
A large amount of soils, the serious life for threatening people of loss and infiltration of red mud and property safety are used, sending out for aluminum oxide industry is govern
Exhibition.Contain substantial amounts of strong basicity chemical substance in red mud, with strong corrosivity.The sewage of high alkalinity permeates the ground or enters
Surface water, raises water pH value, so that beyond the respective standard of national regulation, simultaneously because the height of pH value usually affects water
The toxicity of middle compound, therefore can also cause even more serious water pollution.Red mud is caused sternly to soil, subsoil water and rivers,lakes and seas
Heavily contaminated, therefore carry out harmless treatment to red mud and recycling is major issue that Environmental Protection in China work faces.
Generally, due to the SiO in red mud2、Al2O3, the composition such as CaO do not meet requirement of the devitrified glass to chemical composition, because
This is needed with addition of containing SiO2、Al2O3, the chemical composition such as CaO mineral adjusting the chemical composition of compound, be allowed to meet brightness
The crystallize area of stone, but often the cost of additive is very high.In addition, the Fe containing 30-60% or so in red mud2O3, its conduct
Coloring agent, can make the blackening that darkens of diopside devitrified glass, and the serious diopside devitrified glass that reduces is used as architectural decoration
The commercial value of devitrified glass.
The content of the invention
For the problems referred to above, present invention aim to address additive when preparing diopside devitrified glass with red mud as a raw material
Relatively costly problem, and while economical and efficient ground reduces the iron oxide content in red mud.
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 has a small amount of Fe typically more than 60%, separately2O3、CaO、MgO、TiO2、K2O+Na2O etc.,
The present invention is proposed, with red mud and gangue as raw material, using a large amount of Al contained in gangue2O3With SiO2Red mud is supplemented, is utilized
C in gangue is by the Fe in red mud2O3It is reduced to Fe3O4Magnetic separation is removed.
The present invention proposes effectively utilizes solid waste resource red mud and gangue, and by the impurity-removing method of economical rationality red mud is removed
With the Fe in gangue2O3, remelted casting, the new method of nucleus crystallization production devitrified glass.The method is effectively utilized red mud
With two kinds of solid waste resources of gangue, remove impurity means are effective and reasonable, and preparation process environmental protection, the devitrified glass of production have higher
Economic worth, realize the resource circulation utilization of red mud and gangue solid waste.
According to an aspect of the present invention, there is provided a kind of method for preparing diopside devitrified glass with red mud and gangue, should
Method is comprised the following steps：
1) red mud and gangue are mixed into ore grinding by proportioning, obtains breeze mixture；
2) by step 1) in the breeze mixture that obtains carry out roasting, make the Fe in mixture2O3It is reduced to Fe3O4, obtain
Containing magnetic Fe3O4Roasting after breeze mixture；
3) by step 2) in during breeze mixture carries out magnetic separation to remove mixture in magnetic field after the roasting that obtains
Fe3O4, obtain except breeze mixture after ferrum；
4) by step 3) in obtain except after ferrum breeze mixture be put in Si-Mo rod high temperature furnace, under non-oxidizing atmosphere
Heating blends melting and homogenizing, 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 diopside crystallite
Glass.
According to one embodiment of present invention, step 1) in each group distribution ratio of breeze mixture be：Red mud 60-70 weights
Amount part, gangue 30-40 weight portions.
According to one embodiment of present invention, red mud includes the component of following proportioning：SiO230-40 weight portions, CaO
10-30 weight portions, Al2O310-20 weight portions, Fe2O310-25 weight portions.
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, K2O 2-4 weight portions, C 10-25 weight portions.
According to one embodiment of present invention, step 1) in make granularity in mixture little red mud and gangue mixing ore grinding
More than the 90% of total particle number is accounted in 74 microns of granules.
According to one embodiment of present invention, step 2) in sintering temperature be 500-550 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 be 1-2T.
According to one embodiment of present invention, the reducing agent for adopting in the method is the C in gangue, and flux is bastard coal
K in stone2O。
According to a further aspect in the invention, also provide one kind and diopside crystallite glass is prepared using above-mentioned red mud and gangue
The diopside devitrified glass of the method production of glass.
Had the advantage that compared to prior art by adopting above-mentioned technical proposal, the present invention：
The primary raw material of present invention synthesis devitrified glass is red mud and gangue, and the two is the discarded money of two kinds of zero costs
Source, synthetic product diopside devitrified glass has higher added value；Two kinds of breeze mixing ore grindings of the present invention are again after roasting, bastard coal
A small amount of carbon dust in stone can be by the impurity F e in red mud and gangue2O3It is reduced to magnetic Fe3O4Remove beneficial to magnetic separation, remove
Miscellaneous means economy, efficient, environmental protection.The present invention is the another new way for preparing devitrified glass, also complies with " the circulation Jing that country advocates
The industrial policy of Ji ".
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will more in the description carried out to embodiment is combined with accompanying drawing
Plus it is obvious and easy to understand, wherein：
Fig. 1 shows that red mud of the invention and gangue prepare the flow process of the method for diopside devitrified glass and illustrate
Figure.
Specific embodiment
It should be appreciated that embodiments of the invention shown in the exemplary embodiment are merely illustrative.Although at this
Only minority embodiment has 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 the present invention's
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 new method for adopting solid waste red mud and gangue for Material synthesis devitrified glass, the master of red mud
Chemical composition is wanted to be CaO, Al2O3And SiO2, separately there is a small amount of Na2O、Fe2O3、TiO2Deng the main chemical compositions of gangue are
SiO2And Al2O3, separately there is a small amount of Fe2O3、CaO、MgO、TiO2、K2O and Na2O etc..With red mud as Material synthesis devitrified glass, red mud
In CaO, Al2O3And SiO2It is primary raw material, TiO2It is main Nucleating Agent, Fe2O3It is major impurity；SiO in gangue2
And Al2O3Be synthesize devitrified glass principal ingredients, C, Fe2O3It is major impurity, TiO2Can also be used as a kind of Nucleating Agent, K2O
And Na2O can be used as flux.
There is the Fe of certain content in red mud2O3, a certain amount of C and a small amount of Fe is contained in gangue2O3, Fe2O3And C makees
Impurity to prepare devitrified glass is required to remove, and the present invention is proposed red mud with after gangue mixing ore grinding, is entered in middle-temperature section
Row roasting, makes non-magnetic Fe in red mud2O3It is reduced to the Fe of relatively high magnetism3O4, then to Fe3O4Carry out magnetic separation to remove mixing
Iron tramp in material.Compound after remove impurity is melted under high temperature non-oxygenated property atmosphere；Melting charge is again through pouring into a mould, moving back
The common devitrified glass such as fire, coring and crystallization prepares measure, you can diopside devitrified glass is obtained.
The method that the present invention prepares diopside devitrified glass with red mud and gangue as raw material, technical process such as Fig. 1
Shown, concrete steps include：
1) red mud and gangue are mixed into ore grinding by proportioning, obtains breeze mixture；
2) by step 1) in the breeze mixture that obtains carry out roasting, make the Fe in mixture2O3It is reduced to Fe3O4, obtain
Containing magnetic Fe3O4Roasting after breeze mixture；
3) by step 2) in during breeze mixture carries out magnetic separation to remove mixture in magnetic field after the roasting that obtains
Fe3O4, obtain except breeze mixture after ferrum；
4) by step 3) in obtain except after ferrum breeze mixture be put in Si-Mo rod high temperature furnace, under non-oxidizing atmosphere
Heating blends melting and homogenizing, 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 diopside crystallite
Glass.
According to one embodiment of present invention, step 1) in each group distribution ratio of breeze mixture be：Red mud 60-70 weights
Amount part, gangue 30-40 weight portions.
According to one embodiment of present invention, red mud includes the component of following proportioning：SiO230-40 weight portions, CaO
10-30 weight portions, Al2O310-20 weight portions, Fe2O310-25 weight portions.
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, K2O 2-4 weight portions, C 10-25 weight portions.
According to one embodiment of present invention, step 1) in make granularity in mixture little red mud and gangue mixing ore grinding
More than the 90% of total particle number is accounted in 74 microns of granules.
According to one embodiment of present invention, step 2) in sintering temperature be 500-550 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 be 1-2T.
According to one embodiment of present invention, the reducing agent for adopting in the method is the C in gangue, and flux is bastard coal
K in stone2O。
Referring to specific embodiment, the present invention will be described.
Embodiment one
From the red mud of Changsha aluminium manufacturer, it contains the component of following proportioning：The weight portions of CaO 15, Al2O312 weight portions,
SiO236 weight portions, Fe2O313 weight portions；From Shanxi Pingshou gangue, it contains the component of following proportioning：SiO251 weights
Amount part, Al2O319 weight portions, Fe2O34 weight portions, K2The weight portions of O 3, the weight portions of C 15.
The gangue of the red mud of above-mentioned 67 weight portion and 33 weight portions is mixed, ore grinding is less than granularity in mixture
74 microns of granule accounts for more than the 90% of total particle number, obtains breeze mixture.Then pulverizing mixture is roasted in 510 DEG C of temperature
40min is burnt, the Fe in raw material is made2O3It is converted into Fe3O4, obtain containing magnetic Fe3O4Roasting after breeze mixture.After roasting
Breeze mixture magnetic induction for 1T magnetic field in carry out magnetic separation to remove mixture in Fe3O4, obtain except breeze is mixed after ferrum
Compound.Then will except after ferrum breeze mixture be put in Si-Mo rod high temperature furnace, be warming up to 1550 DEG C under non-oxidizing atmosphere melt
Melt 3h, obtain molten state mixture.Molten state mixture is poured into into annealed molding in the mould of 800 DEG C of preheatings and obtains basis
Glass.Finally the parent glass for obtaining is annealed successively, coring and Crystallizing treatment, obtain diopside devitrified glass.
Embodiment two
From the red mud of Chongqing aluminium manufacturer, it contains the component of following proportioning：The weight portions of CaO 20.5, Al2O311.5 weights
Amount part, SiO236.54 weight portion, Fe2O322.45 weight portions；From Shanxi Pingshou gangue, it contains the group of following proportioning
Point：SiO251 weight portions, Al2O319 weight portions, Fe2O34 weight portions, K2The weight portions of O 3, the weight portions of C 15.
The gangue of the red mud of above-mentioned 60 weight portion and 40 weight portions is mixed, ore grinding is less than granularity in mixture
74 microns of granule accounts for more than the 90% of total particle number, obtains breeze mixture.Then pulverizing mixture is roasted in 520 DEG C of temperature
40min is burnt, the Fe in raw material is made2O3It is converted into Fe3O4, obtain containing magnetic Fe3O4Roasting after breeze mixture.After roasting
Breeze mixture magnetic induction for 1T magnetic field in carry out magnetic separation to remove mixture in Fe3O4, obtain except breeze is mixed after ferrum
Compound.Then will except after ferrum breeze mixture be put in Si-Mo rod high temperature furnace, be warming up to 1550 DEG C under non-oxidizing atmosphere melt
Melt 3h, obtain molten state mixture.Molten state mixture is poured into into annealed molding in the mould of 800 DEG C of preheatings and obtains basis
Glass.Finally the parent glass for obtaining is annealed successively, coring and Crystallizing treatment, obtain diopside devitrified glass.
Embodiment three
From the red mud of Changsha aluminium manufacturer, it contains the component of following proportioning：The weight portions of CaO 10, Al2O310 weight portions,
SiO240 weight portions, Fe2O310 weight portions；From Shanxi Pingshou gangue, it contains the component of following proportioning：SiO250 weights
Amount part, Al2O315 weight portions, Fe2O35 weight portions, K2The weight portions of O 4, the weight portions of C 10.
The gangue of the red mud of above-mentioned 65 weight portion and 40 weight portions is mixed, ore grinding is less than granularity in mixture
74 microns of granule accounts for more than the 90% of total particle number, obtains breeze mixture.Then pulverizing mixture is roasted in 500 DEG C of temperature
30min is burnt, the Fe in raw material is made2O3It is converted into Fe3O4, obtain containing magnetic Fe3O4Roasting after breeze mixture.After roasting
Breeze mixture magnetic induction for 1.5T magnetic field in carry out magnetic separation to remove mixture in Fe3O4, obtain except breeze after ferrum
Mixture.Then will except after ferrum breeze mixture be put in Si-Mo rod high temperature furnace, be warming up to 1600 DEG C under non-oxidizing atmosphere
Melting 2h, obtains molten state mixture.Molten state mixture is poured into into annealed molding in the mould of 700 DEG C of preheatings and obtains base
Plinth glass.Finally the parent glass for obtaining is annealed successively, coring and Crystallizing treatment, obtain diopside devitrified glass.
Example IV
From the red mud of Changsha aluminium manufacturer, it contains the component of following proportioning：The weight portions of CaO 30, Al2O320 weight portions,
SiO230 weight portions, Fe2O325 weight portions；From Shanxi Pingshou gangue, it contains the component of following proportioning：SiO255 weights
Amount part, Al2O325 weight portions, Fe2O33 weight portions, K2The weight portions of O 2, the weight portions of C 25.
The gangue of the red mud of above-mentioned 61 weight portion and 35 weight portions is mixed, ore grinding is less than granularity in mixture
74 microns of granule accounts for more than the 90% of total particle number, obtains breeze mixture.Then pulverizing mixture is roasted in 540 DEG C of temperature
50min is burnt, the Fe in raw material is made2O3It is converted into Fe3O4, obtain containing magnetic Fe3O4Roasting after breeze mixture.After roasting
Breeze mixture magnetic induction for 2T magnetic field in carry out magnetic separation to remove mixture in Fe3O4, obtain except breeze is mixed after ferrum
Compound.Then will except after ferrum breeze mixture be put in Si-Mo rod high temperature furnace, be warming up to 1500 DEG C under non-oxidizing atmosphere melt
Melt 2.5h, obtain molten state mixture.Molten state mixture is poured into into annealed molding in the mould of 850 DEG C of preheatings and obtains base
Plinth glass.Finally the parent glass for obtaining is annealed successively, coring and Crystallizing treatment, obtain diopside devitrified glass.
Embodiment five
From the red mud of Chongqing aluminium manufacturer, it contains the component of following proportioning：The weight portions of CaO 20, Al2O315 weight portions,
SiO236 weight portions, Fe2O312 weight portions；From Shanxi Pingshou gangue, it contains the component of following proportioning：SiO251 weights
Amount part, Al2O319 weight portions, Fe2O35 weight portions, K2The weight portions of O 2.5, the weight portions of C 20.
The gangue of the red mud of above-mentioned 68 weight portion and 30 weight portions is mixed, ore grinding is less than granularity in mixture
74 microns of granule accounts for more than the 90% of total particle number, obtains breeze mixture.Then pulverizing mixture is roasted in 550 DEG C of temperature
45min is burnt, the Fe in raw material is made2O3It is converted into Fe3O4, obtain containing magnetic Fe3O4Roasting after breeze mixture.After roasting
Breeze mixture magnetic induction for 1.2T magnetic field in carry out magnetic separation to remove mixture in Fe3O4, obtain except breeze after ferrum
Mixture.Then will except after ferrum breeze mixture be put in Si-Mo rod high temperature furnace, be warming up to 1550 DEG C under non-oxidizing atmosphere
Melting 2h, obtains molten state mixture.Molten state mixture is poured into into annealed molding in the mould of 900 DEG C of preheatings and obtains base
Plinth glass.Finally the parent glass for obtaining is annealed successively, coring and Crystallizing treatment, obtain diopside devitrified glass.
The foregoing is only presently preferred embodiments of the present invention, not for limit the present invention practical range；If do not taken off
From the spirit and scope of the present invention, the present invention is modified or equivalent, all should be covered in the claims in the present invention
In the middle of protection domain.
Claims (10)
1. a kind of method for preparing diopside devitrified glass with red mud and gangue, it is characterised in that comprise the following steps：
1) red mud and gangue are mixed into ore grinding by proportioning, obtains breeze mixture；
2) by step 1) in the breeze mixture that obtains carry out roasting, make the Fe in mixture2O3It is reduced to Fe3O4, contained
Magnetic Fe3O4Roasting after breeze mixture；
3) by step 2) in Fe during breeze mixture carries out magnetic separation to remove mixture in magnetic field after the roasting that obtains3O4, obtain
The breeze mixture to after except ferrum；
4) by step 3) in obtain except after ferrum breeze mixture be put in Si-Mo rod high temperature furnace, heat under non-oxidizing atmosphere
Mixture melting and homogenizing, 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 diopside devitrified glass.
2. the method for preparing diopside devitrified glass with red mud and gangue according to claim 1, it is characterised in that institute
State step 1) in each group distribution ratio of the breeze mixture be：Red mud 60-70 weight portions, gangue 30-40 weight portions.
3. the method for preparing diopside devitrified glass with red mud and gangue according to claim 2, it is characterised in that institute
State component of the red mud including following proportioning：SiO230-40 weight portions, CaO 10-30 weight portions, Al2O310-20 weight portions,
Fe2O310-25 weight portions.
4. the method for preparing diopside devitrified glass with red mud and gangue according to claim 2, it is characterised in that institute
State component of the gangue including following proportioning：SiO250-55 weight portions, Al2O315-25 weight portions, Fe2O33-5 weight portions,
K2O 2-4 weight portions, C 10-25 weight portions.
5. the method for preparing diopside devitrified glass with red mud and gangue according to claim 1, it is characterised in that institute
State step 1) in make the granule of granularity in the mixture less than 74 microns account for total particle number red mud and gangue mixing ore grinding
More than 90%.
6. the method for preparing diopside devitrified glass with red mud and gangue according to claim 1, it is characterised in that institute
State step 2) in sintering temperature be 500-550 DEG C；The step 4) in melt temperature be 1500-1600 DEG C, the step 5) in
Mold preheating temperature is 700-900 DEG C.
7. the method for preparing diopside devitrified glass with red mud and gangue according to claim 1, it is characterised in that institute
State step 2) in roasting time be 30-50min, the step 4) in time for being heated be 2-3h.
8. the method for preparing diopside devitrified glass with red mud and gangue according to claim 1, it is characterised in that institute
State step 3) in magnetic field magnetic induction be 1-2T.
9. the method for preparing diopside devitrified glass with red mud and gangue according to claim 1, it is characterised in that institute
The reducing agent adopted in method is stated for the C in the gangue, flux is the K in the gangue2O。
10. a kind of employing prepares diopside devitrified glass with red mud and gangue as claimed in any one of claims 1-9 wherein
The diopside devitrified glass of method production.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109020231A (en) * | 2018-10-11 | 2018-12-18 | 清华大学 | A method of preparing alloyed iron and devitrified glass |
| CN111663046A (en) * | 2020-06-30 | 2020-09-15 | 东北大学 | System for recovering iron and aluminum by suspending and co-roasting red mud and coal gangue |
| CN111744670A (en) * | 2020-06-30 | 2020-10-09 | 东北大学 | Method for preparing iron ore concentrate and aluminum ore concentrate by suspension co-roasting of red mud and coal gangue |
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| CN109020231A (en) * | 2018-10-11 | 2018-12-18 | 清华大学 | A method of preparing alloyed iron and devitrified glass |
| CN109020231B (en) * | 2018-10-11 | 2020-05-05 | 清华大学 | Method for preparing alloy iron and microcrystalline glass |
| CN111663046A (en) * | 2020-06-30 | 2020-09-15 | 东北大学 | System for recovering iron and aluminum by suspending and co-roasting red mud and coal gangue |
| CN111744670A (en) * | 2020-06-30 | 2020-10-09 | 东北大学 | Method for preparing iron ore concentrate and aluminum ore concentrate by suspension co-roasting of red mud and coal gangue |
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