CN104150792A - Geopolymer cementitious material and preparation method thereof - Google Patents
Geopolymer cementitious material and preparation method thereof Download PDFInfo
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- CN104150792A CN104150792A CN201410388705.5A CN201410388705A CN104150792A CN 104150792 A CN104150792 A CN 104150792A CN 201410388705 A CN201410388705 A CN 201410388705A CN 104150792 A CN104150792 A CN 104150792A
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- red mud
- water
- metakaolin
- water glass
- gelling material
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- 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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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a geopolymer cementitious material and a preparation method thereof. The geopolymer cementitious material is prepared from the main raw materials of kaolin and red mud, the iron of which is extracted. The geopolymer cementitious material and the preparation method thereof have the advantages as follows: the process is simple, less equipment is required, a large amount of red mud can be treated, the cost is low, the generalization performance is high, the environmental influence is small, the prepared geopolymer cementitious material has a better mechanical property, and other indexes of characteristics of the prepared geopolymer cementitious material are basically equal to and even better than that of a metakaolin geopolymer; the red mud, of which the iron is extracted is adopted to replace partial metakaolin for the preparation of geopolymer, so that great significance on improving the comprehensive utilization degree of red mud is achieved.
Description
Technical field
The invention belongs to inorganic coagulation material technical field, particularly a kind of ground polymers gelling material and preparation method thereof.
Background technology
Red mud claims again red soil, is that in Aluminium industry, to extract aluminum oxide from bauxite later remaining insoluble and have a waste residue of contaminative, every productions of average 1t aluminum oxide, the just subsidiary red mud that discharges 1.0 ~ 2.0t.Along with aluminium industrial expansion, the quantity discharged of red mud increases day by day, and according to estimates, the aluminum oxide industry annual red mud producing in the whole world exceedes 6 × 10
7t, reaches 4500 ~ 5,000 ten thousand tons for 2010, and accumulative total red mud accumulated amount has reached several hundred million tons.The methods such as China takes to build a dam, wet method is stored up, dry method is stored up are processed red mud, have not only taken a large amount of soils, and have made a large amount of waste lyes be penetrated near farmland, cause alkalization of soils, paludification, and polluted surface underground water source.
At present, because of the society that resource scarcity, environment protection become more and more important, red mud is recycled and the comprehensive regulation has become hot issue.Replace part silicate to prepare various industrial goods red mud and cause that people close general concern, especially utilize red mud to replace part metakaolin or standby ground of coal ash for manufacturing polymers gelling material, caused especially scientific worker's very big concern.Its major cause has two: 1. polymers is a kind of gelling material that excites silica-aluminum materials to form by alkali, and it is owing to generating [SiO4] in preparation process
4-tetrahedron and [AlO4]
5-tetrahedron intermediate, then there is polycondensation and generate the inorganic polymer network structure gelling material of new-O-Si-O-Al-O-, compared with normal silicate gelling material, have that mechanical property is better, early strength is high, raw material sources are wide, technique is simple, a save energy and environmental pollution is little (does not substantially discharge CO
2) etc. advantage, be a kind of environment protecting cement, be to study in the world in recent years one of very active material.2. in red mud main chemical compositions, contain Si0
2, CaO, Fe
2o
3, Al
2o
3, Na
2o, TiO
2, K
2o etc., especially Si0
2, Al
2o
3content higher, therefore it has the needed main component of preparation ground polymers gelling material.In addition, it can further strengthen the function of required alkali-activator in preparation ground polymers gelling material process containing alkalescence.Therefore, research and utilization red mud replaces part metakaolin preparation ground polymers gelling material, and the comprehensive utilization tool of red mud is had very important significance.
Abroad, research to red mud preparation ground polymers gelling material is more deep, at the early 21st century, W. Hajjaji etc. just imagination be raw material by red mud and metakaolin, the preparation ground polymers gelling material taking water glass/NaOH as exciting agent, and found through experiments the high-content of red mud in ground polymers gelling material and can reach 25%, and the content of red mud does not affect the physical property of ground polymers gelling material, the stable chemical performance of prepared ground polymers gelling material, and the made product of metakaolin/red mud has the similar water-intake rate of metakaolin and density, proof utilizes red mud to replace the feasibility of part metakaolin.Anuj Kumar etc. pass through with standby ground of Bayer process red mud coal ash for manufacturing polymers gelling material, and find by ground, the obtained ground of 10% and 20% red mud polymers gelling material---when paving brick, these fragments of brick meet IS 15658:2006 standard, and toxic metal leaching amount in allowed limits, prove that red mud can have more wide usage space.Jian He etc. are with two kinds of industrial wastes, red mud (RM) and Novel Inorganic Polymers matrix material---rice hull ash (RHA) preparation ground polymers gelling material, find that after deliberation synthetic RM-RHA ground polymers is the filler in a kind of Composite Pure inorganic polymer tackiness agent and other stages, its ultimate compression strength, up to 20.5MPa, shows that this RM-RHA ground polymers gelling material can be potential cement constructional material.
Form the research of mechanism for geopolymer and start from 1986, but the formation condition of the rule of its structure-forming process, feature, bunching product, mechanism are still unclear, are more difficult to quantitative analysis.To prepare more late that the research of red mud/metakaolin ground polymers material starts using red mud as one of raw material, just start to walk in the nineties in 20th century, at the beginning of 21 century, just start research emphatically.For now, property research on red mud, red mud the volume over the ground impact of polymers performance are not clear, its best red mud/metakaolin proportioning is not clearly described, in addition, mix red mud also indefinite on prepared ground polymers aquation and stable on heating impact, in red mud, iron level is generally higher simultaneously, is therefore the important process that improves red mud comprehensive utilization degree from recovering iron from red mud, but the red mud after the deironing over the ground impact research of polymers is less, without clear and definite conclusion.
For solving the problem existing in above-mentioned former works, the present invention conducts a research around the red mud preparation ground polymers gelling material of extracting after iron, and this thinking has no bibliographical information, has positive meaning to expanding red mud comprehensive utilization scope.
Summary of the invention
The object of this invention is to provide a kind of ground polymers gelling material and preparation method thereof.
Ground of the present invention polymers gelling material makes taking the red mud after kaolin and extraction iron as main raw material.
The concrete steps of above-mentioned ground of preparation polymers gelling material are:
(1) prepare water glass solution
Be 3.26 to modulus, solid content ω=36.35%, in the commercially available industrial-grade sodium silicate of density p=1.40g/mL, adding sodium hydroxide to make modulus is 1.2 ~ 1.7 water glass solution.
(2) kaolin is prepared active metakaolin
The kaolin of larger particles is ground to form to fine powder, and in retort furnace, roasting 6 hours under 600 DEG C of conditions, makes metakaolin, after it is cooling, grinds to form fine powder by sealed shredder, is active metakaolin, packs stand-by.
(3) preparation ground polymers gelling material
A. according to Water glass content be 10 ~ 30%, water cement ratio be 0.3 ~ 0.4 and red mud and active metakaolin mass ratio be 0.2 ~ 0.3, take water glass solution that step (1) makes, active metakaolin that step (2) makes, additionally add water and red mud; The mass percent of the active metakaolin that the water glass solution that described Water glass content makes for added step (1) and step (2) make, water cement ratio is the mass ratio of the active metakaolin that makes of water and step (2), and water and the sodium hydroxide of water by additionally adding water, in water glass solution is converted into the de-water three sum of sodium oxide.
B. additionally adding water of step (3) a steps being taken joins step (3) a and walks in the water glass solution taking, and is uniformly mixed, cooling, makes solution for standby.
C. step (3) a are walked to the active metakaolin and the red mud that take and put into agitator kettle, starting mortar mixer stirs, after stirring, start slowly to add step (3) b to walk the solution making, be uniformly mixed, in the time that rare denseness of slurry is applicable to, stop stirring, make ground polymers slurry.
D. step (3) c being walked to the ground polymers slurry making packs in the mould of 4cm × 4cm × 16cm, and be put in the moulding of vibrating on plain bumper, maintenance one day at ambient temperature, the demoulding after sample sclerosis, sample after the demoulding is continued at 50 DEG C to maintenance 7 days, make ground polymers gelling material.
Described kaolin is technical grade; Red mud is the red mud extracting after iron, Fe in this red mud
2o
3mass percentage content lower than 6%.
Technique of the present invention is simple, need equipment few, can process in a large number red mud, with low cost, replicability is strong, affected by environment little, and the ground polymers gelling material making has good mechanical property, other characteristic index is also substantially quite even better with metakaolin ground polymers, utilizes the red mud extracting after iron to replace part metakaolin preparation ground polymers to be significant to improving red mud comprehensive utilization degree.
Embodiment
embodiment:
(1) prepare water glass solution
Be 3.26 to modulus, solid content ω=36.35%, in the commercially available industrial-grade sodium silicate of density p=1.40g/mL, adding sodium hydroxide to make modulus is 1.5 water glass solution.
(2) kaolin is prepared active metakaolin
The kaolin of larger particles is ground to form to fine powder, and in retort furnace, roasting 6 hours under 600 DEG C of conditions, makes metakaolin, after it is cooling, grinds to form fine powder by sealed shredder, is active metakaolin, packs stand-by.
(3) polymers gelling material preparation
A. according to Water glass content be 20%, water cement ratio be 0.33 and red mud and active metakaolin mass ratio be 0.25, take water glass solution that step (1) makes, active metakaolin that step (2) makes, additionally add water and red mud; The mass percent of the active metakaolin that the water glass solution that described Water glass content makes for added step (1) and step (2) make, water cement ratio is the mass ratio of the active metakaolin that makes of water and step (2), and water and the sodium hydroxide of water by additionally adding water, in water glass solution is converted into the de-water three sum of sodium oxide.
B. additionally adding water of step (3) a steps being taken joins step (3) a and walks in the water glass solution taking, and is uniformly mixed, cooling, makes solution for standby.
C. step (3) a are walked to the active metakaolin and the red mud that take and put into agitator kettle, starting mortar mixer stirs, after stirring, start slowly to add step (3) b to walk the solution making, be uniformly mixed, in the time that rare denseness of slurry is applicable to, stop stirring, make ground polymers slurry.
D. step (3) c being walked to the ground polymers slurry making packs in the mould of 4cm × 4cm × 16cm, and be put in the moulding of vibrating on plain bumper, maintenance one day at ambient temperature, the demoulding after sample sclerosis, sample after the demoulding is continued at 50 DEG C to maintenance 7 days, make ground polymers gelling material.
Described kaolin is technical grade; Red mud is the red mud extracting after iron, Fe in this red mud
2o
3mass percentage content be 4%.
The intensity of the ground polymers gelling material that the present embodiment makes reaches 67.1MPa, and under this external this formula rate, its physicals is also best, and corresponding water-intake rate, bulk density are respectively 1073.1kg/m
3and 1.897kg/m
2, the performance of the ground polymers that this explanation makes with the red mud replacement part metakaolin extracting after iron is up to state standards, and that is to say that the red mud through reclaiming iron also can continue on for preparation ground polymers, for the comprehensive utilization that improves red mud provides new approach.
Claims (2)
1. a ground polymers gelling material, is characterized in that this ground polymers gelling material makes taking the red mud after kaolin and extraction iron as main raw material.
2. the preparation method of polymers gelling material according to claim 1ly, is characterized in that concrete steps are:
(1) prepare water glass solution
Be 3.26 to modulus, solid content ω=36.35%, in the commercially available industrial-grade sodium silicate of density p=1.40g/mL, adding sodium hydroxide to make modulus is 1.2 ~ 1.7 water glass solution;
(2) kaolin is prepared active metakaolin
The kaolin of larger particles is ground to form to fine powder, and in retort furnace, roasting 6 hours under 600 DEG C of conditions, makes metakaolin, after it is cooling, grinds to form fine powder by sealed shredder, is active metakaolin, packs stand-by;
(3) preparation ground polymers gelling material
A. according to Water glass content be 10 ~ 30%, water cement ratio be 0.3 ~ 0.4 and red mud and active metakaolin mass ratio be 0.2 ~ 0.3, take water glass solution that step (1) makes, active metakaolin that step (2) makes, additionally add water and red mud; The mass percent of the active metakaolin that the water glass solution that described Water glass content makes for added step (1) and step (2) make, water cement ratio is the mass ratio of the active metakaolin that makes of water and step (2), and water and the sodium hydroxide of water by additionally adding water, in water glass solution is converted into the de-water three sum of sodium oxide;
What b. step (3) a steps are taken additionally adds water, and joins step (3) a and walks in the water glass solution taking, and is uniformly mixed, cooling, makes solution for standby;
C. step (3) a are walked to the active metakaolin and the red mud that take and put into agitator kettle, starting mortar mixer stirs, after stirring, start slowly to add step (3) b to walk the solution making, be uniformly mixed, in the time that rare denseness of slurry is applicable to, stop stirring, make ground polymers slurry;
D. step (3) c being walked to the ground polymers slurry making packs in the mould of 4cm × 4cm × 16cm, and be put in the moulding of vibrating on plain bumper, maintenance one day at ambient temperature, the demoulding after sample sclerosis, sample after the demoulding is continued at 50 DEG C to maintenance 7 days, make ground polymers gelling material;
Described kaolin is technical grade; Red mud is the red mud extracting after iron, Fe in this red mud
2o
3mass percentage content lower than 6%.
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|---|---|---|---|
| CN201410388705.5A CN104150792B (en) | 2014-08-09 | 2014-08-09 | A kind of ground oligomer gel material and preparation method thereof |
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| CN104150792B CN104150792B (en) | 2016-09-28 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104591569A (en) * | 2014-12-31 | 2015-05-06 | 广西大学 | Geopolymer synthesizing method |
| CN105271848A (en) * | 2015-10-22 | 2016-01-27 | 桂林理工大学 | Manganese gangue slag-based geopolymer cementing material and preparation method thereof |
| CN105503126A (en) * | 2015-12-25 | 2016-04-20 | 南宁学院 | Heat-preserving, low-smoke and low-toxin geopolymer-starch foaming particle composite material and preparation method thereof |
| CN105565763A (en) * | 2015-12-28 | 2016-05-11 | 南宁学院 | High-compatibility geopolymer-starch foam particle composite heat-preserving material and preparation method thereof |
| CN105601187A (en) * | 2015-12-25 | 2016-05-25 | 南宁学院 | Preparation method of density enhancer-added geopolymer-starch foam particle composite insulation material |
| CN106467378A (en) * | 2016-09-05 | 2017-03-01 | 广西大学 | A kind of synthetic method of high effective green environmentally friendly filter membrane |
| CN108298846A (en) * | 2018-04-16 | 2018-07-20 | 葛潇楠 | A kind of geopolymer gelled material and preparation method |
| CN110357506A (en) * | 2019-07-30 | 2019-10-22 | 佛山市津明建筑科技有限公司 | A kind of red mud-metakaolin compound ground oligomer gel material and preparation method thereof |
| CN110759656A (en) * | 2019-11-19 | 2020-02-07 | 太原理工大学 | Normal-temperature single red mud geopolymer and preparation method thereof |
| CN110803890A (en) * | 2019-11-19 | 2020-02-18 | 太原理工大学 | High-red-mud-content geopolymer and preparation method thereof |
| CN111847934A (en) * | 2019-04-26 | 2020-10-30 | 中国石油化工股份有限公司 | Soil-polymerized cement material and its preparing process |
| CN111847935A (en) * | 2019-04-26 | 2020-10-30 | 中国石油化工股份有限公司 | Soil cement material and preparation method thereof |
| CN114671633A (en) * | 2022-05-05 | 2022-06-28 | 华北理工大学 | Full-solid-waste clinker-free cementing material, conductive mortar and preparation method thereof |
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-
2014
- 2014-08-09 CN CN201410388705.5A patent/CN104150792B/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 云斯宁等: ""高钙粉煤灰作为添加剂制备赤泥偏高岭土胶凝材料"", 《西安建筑科技大学学报（自然科学版）》, no. 6, 31 December 2008 (2008-12-31) * |
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| CN104591569B (en) * | 2014-12-31 | 2018-05-01 | 广西大学 | A kind of synthetic method of red mud base geological polymer |
| CN104591569A (en) * | 2014-12-31 | 2015-05-06 | 广西大学 | Geopolymer synthesizing method |
| CN105271848A (en) * | 2015-10-22 | 2016-01-27 | 桂林理工大学 | Manganese gangue slag-based geopolymer cementing material and preparation method thereof |
| CN105503126A (en) * | 2015-12-25 | 2016-04-20 | 南宁学院 | Heat-preserving, low-smoke and low-toxin geopolymer-starch foaming particle composite material and preparation method thereof |
| CN105601187A (en) * | 2015-12-25 | 2016-05-25 | 南宁学院 | Preparation method of density enhancer-added geopolymer-starch foam particle composite insulation material |
| CN105601187B (en) * | 2015-12-25 | 2017-12-29 | 南宁学院 | A kind of preparation method for the ground polymers starch foam particle composite thermal insulation material for adding density enhancing |
| CN105565763A (en) * | 2015-12-28 | 2016-05-11 | 南宁学院 | High-compatibility geopolymer-starch foam particle composite heat-preserving material and preparation method thereof |
| CN106467378B (en) * | 2016-09-05 | 2019-07-26 | 广西大学 | A kind of synthetic method of high effective green environmentally friendly filter membrane |
| CN106467378A (en) * | 2016-09-05 | 2017-03-01 | 广西大学 | A kind of synthetic method of high effective green environmentally friendly filter membrane |
| CN108298846A (en) * | 2018-04-16 | 2018-07-20 | 葛潇楠 | A kind of geopolymer gelled material and preparation method |
| CN111847934A (en) * | 2019-04-26 | 2020-10-30 | 中国石油化工股份有限公司 | Soil-polymerized cement material and its preparing process |
| CN111847935A (en) * | 2019-04-26 | 2020-10-30 | 中国石油化工股份有限公司 | Soil cement material and preparation method thereof |
| CN111847934B (en) * | 2019-04-26 | 2022-07-12 | 中国石油化工股份有限公司 | Soil-polymerized cement material and its preparing process |
| CN111847935B (en) * | 2019-04-26 | 2022-07-12 | 中国石油化工股份有限公司 | Soil cement material and preparation method thereof |
| CN110357506A (en) * | 2019-07-30 | 2019-10-22 | 佛山市津明建筑科技有限公司 | A kind of red mud-metakaolin compound ground oligomer gel material and preparation method thereof |
| CN110759656A (en) * | 2019-11-19 | 2020-02-07 | 太原理工大学 | Normal-temperature single red mud geopolymer and preparation method thereof |
| CN110803890A (en) * | 2019-11-19 | 2020-02-18 | 太原理工大学 | High-red-mud-content geopolymer and preparation method thereof |
| CN110803890B (en) * | 2019-11-19 | 2020-10-23 | 太原理工大学 | High-red-mud-content geopolymer and preparation method thereof |
| CN114671633A (en) * | 2022-05-05 | 2022-06-28 | 华北理工大学 | Full-solid-waste clinker-free cementing material, conductive mortar and preparation method thereof |
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Effective date of registration: 20181018 Address after: 523841 No. 1308, Yifeng business building, 284 South Ring Road, Changan Town, Changan, Dongguan. Patentee after: Dongguan Gang Li new material Co., Ltd. Address before: No. 12, Jian Gong Road, Guilin, the Guangxi Zhuang Autonomous Region Patentee before: Guilin University of Technology |
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