CN104129935B - Modified glass tailing cement-based auxiliary cementing material and preparation method thereof - Google Patents
Modified glass tailing cement-based auxiliary cementing material and preparation method thereof Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 106
- 239000011521 glass Substances 0.000 title claims abstract description 99
- 239000004568 cement Substances 0.000 title claims abstract description 90
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000001354 calcination Methods 0.000 claims abstract description 25
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000010335 hydrothermal treatment Methods 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 239000002893 slag Substances 0.000 claims abstract description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011575 calcium Substances 0.000 claims abstract description 6
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 6
- 238000000227 grinding Methods 0.000 claims abstract description 6
- 239000001095 magnesium carbonate Substances 0.000 claims abstract description 6
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims abstract description 6
- 235000014380 magnesium carbonate Nutrition 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 8
- 239000012257 stirred material Substances 0.000 claims description 6
- 239000006004 Quartz sand Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 239000000047 product Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 claims description 2
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 2
- 230000036571 hydration Effects 0.000 claims description 2
- 238000006703 hydration reaction Methods 0.000 claims description 2
- 239000004567 concrete Substances 0.000 abstract description 10
- 239000002440 industrial waste Substances 0.000 abstract description 10
- 238000011161 development Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000012986 modification Methods 0.000 abstract description 3
- 230000004048 modification Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 238000001035 drying Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011398 Portland cement Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 238000010998 test method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000005997 Calcium carbide Substances 0.000 description 3
- 239000010881 fly ash Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
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- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
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- 235000010755 mineral Nutrition 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
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- 229920003023 plastic Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011044 quartzite Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a modified glass tailing cement-based auxiliary cementing material and a preparation method thereof, wherein the material comprises the following raw materials in percentage by mass of 70-100: 0-30 parts of glass tailings and modified auxiliary materials; the modified auxiliary material is a calcium material or a calcium magnesium material or a mixture of the calcium material and the calcium magnesium material in any mass ratio; mixing all the raw materials, and processing by any one of mechanical grinding, hydrothermal treatment, low-temperature calcination and hydrothermal-calcination. According to the invention, the surface modification is carried out on the glass tailings, so that the surface gelatinization of the glass tailings is enhanced, the shrinkage deformation of the cement-based material is reduced, and the early mechanical property is improved. The invention fully utilizes industrial wastes such as glass tailings, carbide slag, magnesite tailings and the like to develop a novel cement-based auxiliary cementing material, can reduce the consumption of cement clinker, prolong the service life of the cement-based material, indirectly reduce the energy consumption for producing cement, reduce the emission of carbon dioxide and have important significance for energy conservation and emission reduction and sustainable development of the cement concrete industry.
Description
Technical Field
The invention belongs to the field of building materials, relates to a cement-based material, and particularly relates to a method for preparing a cement-based auxiliary cementitious material by using glass tailings.
Background
In 2013, the cement yield in China reaches 24.1 hundred million tons, and the cement is widely applied to engineering construction such as industry, agriculture, national defense, urban construction, water conservancy, ocean development and the like, and effectively supports the rapid development of economy and society in China, however, the cement industry is one of the industries with the largest energy resource consumption in China, and accounts for about 5% of the total energy consumption in China, and the particulate matter emission accounts for about 30% of the total industrial emission, so that the pressure on industrial energy, resources and environmental protection in China is further increased. The cement industry affected by high energy consumption aggravates the pressure of the whole society on resources, energy and environment, and simultaneously restricts the sustainable development of the cement industry, and the way of reducing the cement yield is not feasible in the current national economic construction.
At home and abroad, the industrial waste or industrial waste residue is taken as auxiliary cementing material, the use of the auxiliary cementing material can reduce the cement consumption, prolong the service life of cement-based materials and improve the application efficiency of cement, thereby indirectly reducing the energy consumption for producing cement and reducing CO2The emission of the cement is realized, the application technology of industrial waste residues as a mixed material in the cement is widely applied by establishing standards in China at present, the application technology has the effects of protecting the environment, changing waste into valuable and realizing sustainable development on the one hand, and the cement performance is adjusted on the other hand, so that the durability of the cement concrete is improved, the safe service life is prolonged, and higher economic benefits are realized. However, the auxiliary cementing material has low activity, so that the early strength of the cement-based material is low, and the mixing amount of industrial waste residues and the application range of the composite cement are limited. The mechanical property is not affected only by improving the use efficiency of the cement clinkerOn the premise of sound, the doping amount of the mixed material or the admixture is increased, but the varieties of the mixed material or the admixture are not rich enough at present, mainly granulated blast furnace slag, fly ash and the like are taken as main materials, and due to the national economic construction requirements, the slag and the fly ash also have the factors of short supply, high price and the like in concrete. In order to utilize industrial waste more effectively, a novel cement-based mixed material or admixture, namely a cement-based auxiliary cementing material is searched, and the activity of the novel cement-based mixed material or admixture is improved, so that the novel cement-based auxiliary cementing material with a performance adjusting function is more and more attracted by people.
The glass tailings adopted by the invention are mainly wastes obtained by crushing and screening quartz sand as a raw material for glass factory production, and mainly comprise quartz and SiO2The content is more than 85 percent. The glass tailings have the characteristics of fine granularity, large quantity, recyclability, secondary resource and environmental pollution, are accumulated by solid wastes, occupy land and pollute the environment. The comprehensive utilization of quartz tailings in China mainly focuses on the aspects of polyvinyl acetate coating, cement clinker production as an ingredient, ultrahigh-purity quartz sand extraction, ceramsite production and the like, but the produced products have low added value and are limited by transport distance, and large-scale production is not easy to realize.
The invention patent CN1887763A & lt & gt A pretreated yellow river silt, an agglomerated stone cementing material obtained from the pretreated yellow river silt and a preparation method thereof & lt & gt and CN100567194C & lt & gt A method for producing a concrete active admixture by using iron tailings & gt both disclose that the yellow river silt or silt and the magnetite-quartzite type iron ore tailings are respectively modified by hydrothermal alteration reaction to obtain the concrete admixture, and the aim is to respectively consume the yellow river silt or silt and the tailings and reduce the manufacturing cost of concrete. Both the two inventions are methods for preparing the cement-based auxiliary cementing material, glass tailings are not involved, and the alteration agent mentioned in the invention is complex in ingredients; in addition, the method for preparing the concrete admixture by using the iron tailings in the patent CN100567194C is single, and certain difficulty exists in actual production.
Disclosure of Invention
The invention aims to provide a modified glass tailing cement-based auxiliary cementing material and a preparation method thereof, and further broadens the range of novel cement-based auxiliary cementing materials. The invention utilizes inert material glass tailings for modification, increases the surface gelatinization, reduces the shrinkage deformation of the cement-based material and increases the early strength of the cement-based material, achieves the purposes of consuming industrial wastes of the glass tailings, reducing the production of cement clinker and improving the durability of the cement-based material, and has important theoretical significance and practical value for realizing energy conservation and emission reduction and sustainable development of the cement concrete industry.
In order to achieve the purpose, the invention adopts the following technical scheme:
the modified glass tailing cement-based auxiliary cementing material comprises the following raw materials in percentage by mass of 70-100: 0-30 parts of glass tailings and modified auxiliary materials; the modified auxiliary material is a calcium material or a calcium magnesium material or a mixture of the calcium material and the calcium magnesium material in any mass ratio.
As a further scheme of the invention: the mass ratio of the glass tailings to the modified auxiliary materials is 70-90: 10-30 parts of; the main components of the glass tailings are quartz and SiO2The content is more than 85 percent, and the waste is obtained by crushing and screening quartz sand which is used as a raw material for producing glass in a glass factory; the main component of the calcareous material is CaO, and the byproduct carbide slag of PVC produced by wet acetylene in an electrochemical plant is taken; the main components of the calcium-magnesium material are CaO and MgO, and the calcium-magnesium material is taken from magnesite tailings.
The preparation method of the modified glass tailing cement-based auxiliary cementing material comprises the following steps: after all the raw materials are mixed, any one of mechanical grinding, hydrothermal treatment, low-temperature calcination and hydrothermal-calcination treatment is adopted to obtain the modified glass tailing cement-based auxiliary cementing material.
As a further scheme of the invention: the preparation method of the modified glass tailing cement-based auxiliary cementing material specifically comprises the following four steps:
the method comprises the following steps: mechanically grinding the glass tailings in a ball mill for 30 min-1 h until the sieved residue of a square-hole sieve with the particle size of 80 mu m is 10wt% +/-2 wt%, thus obtaining the modified glass tailings cement-based auxiliary cementing material;
the method 2 comprises the following steps: placing the glass tailings and the modified auxiliary materials in a stirrer, stirring the dry materials, and then carrying out hydrothermal treatment on the mixed and stirred materials, wherein the hydrothermal temperature is controlled to be 100-200 ℃, and the treatment time is 4-12 hours, so as to obtain the modified glass tailings cement-based auxiliary cementing material;
the method 3 comprises the following steps: placing the glass tailings and the modified auxiliary materials in a stirrer, stirring the dry materials, and then calcining the mixed and stirred materials in a muffle furnace or a strong hot blast high-temperature fluidized bed furnace, wherein the calcining temperature is controlled to be 700-900 ℃, and the heat preservation time is 0.5-2 hours, so as to obtain the modified glass tailings cement-based auxiliary cementing material;
the method 4 comprises the following steps: putting the glass tailings and the modified auxiliary materials into a stirrer, stirring the dry materials, and then carrying out hydrothermal-calcination treatment on the mixed and stirred materials; firstly, carrying out hydrothermal treatment, wherein the hydrothermal temperature is controlled to be between 100 and 200 ℃, and the treatment time is 4 to 12 hours; and calcining in a muffle furnace or a strong hot blast high-temperature fluidized bed furnace, controlling the calcining temperature at 600-800 ℃, and keeping the temperature for 0.5-2 hours to obtain the modified glass tailing cement-based auxiliary cementing material.
The invention has the following beneficial effects:
1. the industrial waste glass tailings are modified, so that the surface of the industrial waste glass tailings has gelatinization, the bonding strength between a clinker hydration product in the cement-based material and the surface of the glass tailings is improved, the shrinkage deformation of the cement-based material is reduced, the self-shrinkage of the cement-based material is reduced by 5-10% compared with that of unmodified glass tailings by replacing cement modified glass tailings with the same doping amount, the drying shrinkage is reduced by 10-20%, the early mechanical property of the cement-based material is improved, for example, the early strength of the compressive strength modified glass tailings is improved by 10-15% compared with that of the unmodified glass tailings, and the durability of the cement-based material can be improved.
2. Lifting deviceThe use amount of the high-auxiliary cementing material glass tailings in the cement-based material consumes industrial wastes, protects the environment, relieves the shortage of auxiliary cementing materials such as fly ash, mineral powder and the like caused by large concrete pouring amount in China, reduces the manufacturing cost of concrete, overcomes the defects of low activity, low early strength, poor durability and the like of the traditional auxiliary cementing material, further reduces the using amount of cement clinker, indirectly reduces the energy consumption for producing cement, reduces CO2And the purposes of energy conservation and emission reduction are achieved.
Detailed Description
The invention is further illustrated by the following specific examples.
Example 1:
and (3) mechanically grinding the glass tailings in a ball mill for about 45min until the sieved residue of a square-hole sieve with the particle size of 80 mu m is 10 +/-2 wt%, so as to obtain the modified glass tailings cement-based auxiliary cementing material.
The stability of the cement slurry doped with 30wt% of the modified glass tailings is tested according to GB175-2007 general Portland Cement, and the stability result is qualified. Carrying out relevant experiments on the strength and shrinkage deformation tests of the cement-based material doped with the modified glass tailings, wherein the strength test comprises the following steps: the standard specification of GB/T17671-1999 method for testing the strength of cement mortar (ISO method) is adopted; self-shrinkage testing: the device adopts a plastic corrugated pipe with a mold of phi 25mm multiplied by 300mm, and a dial indicator is used for testing; drying shrinkage test: the device adopts a 25mm multiplied by 280mm triple test die, a stainless steel measuring head is embedded at the end part, and a comparator is used for testing. When 30% of unmodified glass tailings, modified mechanical grinding glass tailings and the like are added to replace cement, the 28d strength of the obtained surface modified glass tailings composite cement paste is increased by 10.2% compared with the 28d compressive strength of the unmodified glass tailings, and the self-shrinkage and drying shrinkage of the 28d are respectively reduced by 5.1% and 10.2%.
Example 2:
according to the following steps of 80: 20 percent of glass tailings and calcium carbide slag are taken according to the mass percentage, put in a stirrer, stirred and then subjected to hydrothermal treatment, the hydrothermal temperature is controlled at 150 ℃, the treatment is carried out for 8 hours, and the powder material after the hydrothermal treatment is dried to obtain the surface modified glass tailings. The stability of the cement slurry doped with 30% of the modified glass tailings is tested according to GB175-2007 general Portland Cement, and the stability result is qualified. By the strength and shrinkage deformation test method described in example 1, 30wt% of unmodified glass tailings and modified surface glass tailings subjected to modification by hydrothermal treatment are added instead of cement, and the 28d strength of the obtained surface modified glass tailings composite cement paste is increased by 11.2% compared with the 28d compressive strength of the unmodified glass tailings, and the self shrinkage and the drying shrinkage are respectively reduced by 5.9% and 11.3%.
Example 3:
according to the following steps of 90: 10 percent of glass tailings and calcium carbide slag are taken, put into a stirrer, the dry materials are uniformly stirred and then subjected to low-temperature calcination treatment, the calcination temperature is 850 ℃ in a muffle furnace, the heat preservation time is 1 hour, and the surface modified glass tailings are obtained by quenching in the air. The stability of the modified glass tailing mixed composite cement slurry with the content of 30wt% is tested according to GB175-2007 general Portland Cement, and the stability result is qualified. By the strength and shrinkage deformation test method described in example 1, 30wt% of unmodified glass tailings and modified surface glass tailings subjected to modified low-temperature calcination treatment are added to replace cement, and the 28d strength of the obtained surface modified glass tailings composite cement paste is increased by 13.2% compared with the 28d compressive strength of the unmodified glass tailings, and the self shrinkage and the drying shrinkage are respectively reduced by 5.8% and 12.3%.
Example 4:
according to the following steps of 80: 20 percent of glass tailings and magnesite tailings of calcium magnesium materials are taken, put into a stirrer, the dry materials are evenly stirred and then calcined at low temperature, the calcination temperature is 850 ℃ in a muffle furnace, the heat preservation time is 1 hour, and the surface modified glass tailings are obtained by quenching in the air. The stability of the modified glass tailing mixed composite cement slurry with the content of 30wt% is tested according to GB175-2007 general Portland Cement, and the stability result is qualified. By the test method described in example 1, 30wt% of unmodified glass tailings and modified surface glass tailings subjected to modified low-temperature calcination treatment are mixed to replace cement, and the 28d strength of the obtained surface modified glass tailings composite cement paste is increased by 12.3% compared with the 28d compressive strength of the unmodified glass tailings, and the self-shrinkage and the drying shrinkage are respectively reduced by 6.1% and 13.3%.
Example 5:
according to the following steps of 90: 10, putting the glass tailings and the magnesite tailings of the calcium-magnesium material in a stirrer, uniformly stirring the dry materials, performing hydrothermal treatment at 150 ℃ for 4 hours, performing low-temperature calcination treatment, performing calcination in a muffle furnace at 800 ℃ for 0.5 hour, and performing rapid cooling in air to obtain the surface-modified glass tailings. The stability of the composite cement slurry doped with 30wt% of the modified glass tailings is tested according to GB175-2007 general Portland Cement, and the stability result is qualified. By the test method described in example 1, 30wt% of unmodified glass tailings and modified surface glass tailings subjected to modified low-temperature calcination treatment are mixed to replace cement, and the 28d strength of the obtained surface modified glass tailings composite cement paste is increased by 13.3% compared with the 28d compressive strength of the unmodified glass tailings, and the self-shrinkage and the drying shrinkage are respectively reduced by 6.5% and 14.3%.
Example 6:
according to the following steps of 80: 10: 10, putting the glass tailings, the calcium carbide slag and the calcium-magnesium magnesite tailings in a stirrer, uniformly stirring the dry materials, performing hydrothermal treatment at 150 ℃ for 4 hours, performing low-temperature calcination treatment, performing rapid cooling in a muffle furnace at 800 ℃ for 0.5 hour to obtain the surface-modified glass tailings. The stability of the composite cement slurry doped with 30wt% of the modified glass tailings is tested according to GB175-2007 general Portland Cement, and the stability result is qualified. By the test method described in example 1, 30wt% of unmodified glass tailings and the modified surface glass tailings subjected to modified low-temperature calcination treatment are mixed to replace cement, the 28d strength of the obtained surface modified glass tailings composite cement paste is increased by 14.3% compared with the 28d compressive strength of the unmodified glass tailings, and the self-shrinkage and the drying shrinkage are respectively reduced by 6.8% and 15.4%.
Claims (2)
1. The modified glass tailing cement-based auxiliary cementing material is characterized by comprising the following components in parts by weight: the raw materials are 70-90% by mass: 10-30 of glass tailings and modified auxiliary materials; the modified auxiliary material is a calcium material or a calcium magnesium material or a mixture of the calcium material and the calcium magnesium material in any mass ratio; the surface of the modified glass tailing cement-based auxiliary cementing material has the gelatinization property, and the modified glass tailing cement-based auxiliary cementing material is doped into a cement-based material and is used for improving the bonding strength between a clinker hydration product in the cement-based material and the surface of glass tailing, reducing the shrinkage deformation of the cement-based material and increasing the cementThe early mechanical property of the base material improves the durability of the cement-based material; the glass tailings mainly comprise quartz and SiO2The content is more than 85 percent, and the waste is obtained by crushing and screening quartz sand which is used as a raw material for producing glass in a glass factory; the main component of the calcareous material is CaO, and the byproduct carbide slag of PVC produced by wet acetylene in an electrochemical plant is taken; the main components of the calcium-magnesium material are CaO and MgO, and the calcium-magnesium material is taken from magnesite tailings; after all the raw materials are mixed, any one of mechanical grinding, hydrothermal treatment, low-temperature calcination and hydrothermal-calcination treatment is adopted to obtain the modified glass tailing cement-based auxiliary cementing material.
2. The preparation method of the modified glass tailing cement-based auxiliary cementing material according to claim 1, which is characterized by comprising the following specific steps:
placing the glass tailings and the modified auxiliary materials in a stirrer, stirring the dry materials, and then carrying out hydrothermal treatment on the mixed and stirred materials, wherein the hydrothermal temperature is controlled to be 100-200 ℃, and the treatment time is 4-12 hours, so as to obtain the modified glass tailings cement-based auxiliary cementing material; or,
placing the glass tailings and the modified auxiliary materials in a stirrer, stirring the dry materials, and then calcining the mixed and stirred materials in a muffle furnace or a strong hot blast high-temperature fluidized bed furnace, wherein the calcining temperature is controlled to be 700-900 ℃, and the heat preservation time is 0.5-2 hours, so as to obtain the modified glass tailings cement-based auxiliary cementing material; or
Putting the glass tailings and the modified auxiliary materials into a stirrer, stirring the dry materials, and then carrying out hydrothermal-calcination treatment on the mixed and stirred materials; firstly, carrying out hydrothermal treatment, wherein the hydrothermal temperature is controlled to be 100-200 ℃, and the treatment time is 4-12 hours; and calcining in a muffle furnace or a strong hot blast high-temperature fluidized bed furnace at 600-800 ℃ for 0.5-2 hours to obtain the modified glass tailing cement-based auxiliary cementing material.
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| CN106242326B (en) * | 2016-08-26 | 2021-12-28 | 湖南科技大学 | By SiO2Method for preparing ecological cement by using main raw materials |
| CN113087485A (en) * | 2021-03-15 | 2021-07-09 | 祎禾科技有限公司 | Ocean engineering repair cementing material prepared from modified quartz sand and preparation method thereof |
| CN113582571B (en) * | 2021-07-23 | 2022-08-16 | 海南大学 | Nano material modified cement calcareous sand and preparation method thereof |
| CN114804672B (en) * | 2022-01-14 | 2023-05-16 | 东北大学 | Superfine iron tailing filling cementing material and preparation method thereof |
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| CN103011881A (en) * | 2012-12-27 | 2013-04-03 | 山东宏艺科技股份有限公司 | Method for increasing quartz sand tailing powder content in aerated concrete product |
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| AU2007200162A1 (en) * | 2006-03-20 | 2007-10-04 | Council Of Scientific & Industrial Research | A Process for the Production of Geopolymer Cement from Fly Ash and Granulated Blast Furnace Slag, Geopolymer Cement Made Thereby and Process of Making Products Thereof |
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| CN103193431A (en) * | 2012-09-03 | 2013-07-10 | 上海舟润实业有限公司 | Quartz tailing autoclaved aerated concrete building block and preparation method thereof |
| CN103011881A (en) * | 2012-12-27 | 2013-04-03 | 山东宏艺科技股份有限公司 | Method for increasing quartz sand tailing powder content in aerated concrete product |
| CN103601382A (en) * | 2013-11-07 | 2014-02-26 | 广西云燕特种水泥建材有限公司 | Environment-friendly cement and production method thereof |
| CN103601381A (en) * | 2013-11-07 | 2014-02-26 | 广西云燕特种水泥建材有限公司 | Environment-friendly high-performance cement and production method thereof |
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