CN104844141A - Red mud raw material-based non-steamed brick and production method thereof - Google Patents
Red mud raw material-based non-steamed brick and production method thereof Download PDFInfo
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- CN104844141A CN104844141A CN201510195880.7A CN201510195880A CN104844141A CN 104844141 A CN104844141 A CN 104844141A CN 201510195880 A CN201510195880 A CN 201510195880A CN 104844141 A CN104844141 A CN 104844141A
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to a red mud raw material-based non-steamed brick and a production method thereof, and belongs to a building material wall brick and a production method thereof. The brick is produced by adopting industrial waste residue red mud as a main raw material, granular blast furnace slag micro-powder, lime and gypsum as auxiliary materials and water glass as an alkaline exciting agent. The red mud raw material-based non-steamed brick concretely comprises, by mass, 70-80% of the red mud, 0-10% of desulfurized ash, 0-10% of slag, 5% of lime, 8-10% of desulfurized gypsum and 0-5% of water glass. The method comprises the following steps: drying the above ingredients, grinding, weighing the ingredients, mixing according to above proportions, molding, and carrying out standard maintenance and natural maintenance. The above molding process is simple, and is characterized by direct casting vibration molding without pressurization, and the above natural maintenance process is characterized by normal-temperature rapid reaction solidification, and has the advantages of no sintering, and no steam or steam press maintenance. The non-steamed brick has the advantages of high compressive strength, strong drying shrinkage resistance, and no efflorescence phenomenon after long-term storage. The method massively using the industrial waste slag has the advantages of resource and energy saving, low cost and small energy consumption.
Description
Technical field
The present invention relates to a kind of material of construction wall body brick and preparation method thereof, particularly relate to a kind of non-evaporating brick based on red mud raw material and preparation method thereof.
Background technology
Since 2003, solid clay brick is forbidden in limited time in domestic 170 cities, and the substitute of research solid clay brick is extremely urgent, wherein non-burning brickly greatly develops because of features such as its low production cost, superior performance, environmental benefit are good.A lot of research has been done to these forefathers, such as, the people such as Yue Yunlong utilize red mud and flyash as raw material, cement for solidifying agent non-burning brick to make, batching is: alkali slag cement 60%, red mud 30%, flyash 10%, is made by extrusion forming, and the non-burning brick mechanical property obtained reaches the standard of national flyash brick.The people such as Wang Mei have developed red-mud coal ash brick, and the optimum proportioning of test is: red mud 25-40%, flyash 18-28%, aggregate 30-35%, cement 1%, lime 8-10%, gypsum 2-3%, water ratio 15-17%, ageing 8-12h, adopt 40MP
apressure forming, made non-burning brick mechanical property reaches the requirement to autoclaved lime-sand brick MU15 in GB.The people such as raw thunder have done some researchs to the non-autoclaved and unburned brick of red mud porcelain granule flyash, and the optimum proportioning of test is: red mud 18%, haydite 46%, flyash 21%, cement 15%, and by brick press pressure forming, the brick of gained reaches country to non-burning brick standard.There is following shortcoming in the above-mentioned technical scheme providing red mud brickmaking: 1. forming pressure is high or add aggregate, therefore the unit weight of brick is large, does not meet the requirement of high-strength light; 2. the water ratio required is low, to moulding process require high, if production control is bad, easily make non-burning brick water stability and air stability poor; 3. all use the starting material such as cement will certainly strengthen non-burning brick production cost, also can affect the popularization of this technology.
Summary of the invention
The object of the present invention is to provide a kind of non-evaporating brick based on red mud raw material and preparation method thereof, solve the problem that red mud, slag, desulphurize fly ash and desulfurated plaster industrial residue utilization rate are low.
The object of the present invention is achieved like this: with industrial residue red mud for main raw material, with industrial residue desulphurize fly ash, slag, lime, desulfurated plaster for auxiliary material, take water glass as alkali-activator; Its mass percent consists of: red mud 70-80%; Desulphurize fly ash 0-10%; Slag 0-10%; Lime 5%; Desulfurated plaster 8-10%; Water glass 0-5%.
Preparation method comprises: stoving process, weigh batching and grinding hybrid technique, and concrete grammar process is as follows:
(1) stoving process: with dryer, red mud, desulphurize fly ash, slag, lime, desulfurated plaster are dried, remove free water wherein;
(2) grinding process: red mud is put into ball mill grinding to specific surface area>=600m
2/ kg;
(3) then above-mentioned three kinds of raw materials are put into ball mill combined grinding to specific surface area>=600m by weigh batching and hybrid technique: carry out weigh batching by above-mentioned raw materials formula
2/ kg;
(4) proportioning raw materials and shaping: red mud 70-80%; Desulphurize fly ash 0-10%; Slag 0-10%; Lime 5%; Desulfurated plaster 8-10%; Water glass 0-5%, separately adds water, and amount of water accounts for the 30-40% of batching material total amount; Fully stir in stirrer, pour into the mold, be placed on shaking table closely knit shaping;
(5) normal curing: wrap up laggard column criterion maintenance with plastics film, after fully solidifying 1-3 days, the demoulding is placed on bracket, is transported to maintenance place;
(6) natural curing: carry out maintenance under field conditions (factors); Also available heat air cycle maintenance, shortens curing time and production cycle.
Described red mud is that sintering process produces the industrial residue produced in aluminum oxide, and oven dry is crushed to its particle diameter and is less than 0.15mm; Described slag is graining blast-furnace cinder micro-powder, meet the graining blast-furnace cinder micro-powder that GB/T 18046-2008 standard specifies, obtain for granulated blast-furnace slag grinding after iron removal by magnetic separation process makes it reach specific surface area >=400m2/kg, the superfine graining blast-furnace cinder micro-powder that wherein particle diameter is less than 50 μm accounts for more than 80% of total mass; Described lime is unslaked lime; Ball milling fineness crosses quantity >=98% of 180 mesh sieves; Described gypsum is carry out industry byproduct desulfurated plaster that desulfurizing and purifying process obtains or natural dihydrate gypsum to the flue gas produced after sulfur-bearing feed coal, wet goods burning, and the grade of described dihydrate gypsum is greater than 90%; Described alkali-activator is the sodium silicate of modulus 1.5-2.5, aqua and pulvis.
Beneficial effect, owing to have employed such scheme, employing industrial waste red mud is main raw material, add the appropriate calcareous correction material such as lime, desulfurated plaster, the gelation activity of red mud effectively can be improved under the exciting of alkaline medium water glass, can turn waste into wealth, all problem of environmental pollutions that successive elimination industrial residue red mud brings.Preparation process of the present invention does not have high temperature, high-pressure process condition, without the need to calcining and vapor cure, can obtain red mud wall body brick by means of only mechanical vibration casting and natural curing; In addition, the present invention adopts alkali-activated carbonatite red mud to replace cement as gelling material, is not only conducive to environmental protection, and with low cost, and production process discharges the obnoxious flavoures such as CO2, SO2, NOx hardly, is a kind of cleaning procedure of environmental protection generally.
The invention has the advantages that:
(1) early strength is obvious, and later strength also can be up to state standards.
(2) make power consumption low, produce and technique curing condition simply, and the unit weight of product is low.
Only need to use the levigate and mixing material of ball mill when grinding process and hybrid technique, whole production process power consumption is low.Product unit weight is low, reduces transportation energy consumption, and use.
(3) surface forms a kind of film, the weathering resistance that can effectively improve and water resisting property.
The film on non-burning brick surface can effectively weathering resistance and water resisting property, the shortcoming of increase the service life, overcome the moisture absorption of product, return halogen and scum.
(4) have no side effect, nontoxic, tasteless, "dead", harmless, free from environmental pollution.
(5) material more than 90% utilized is all industrial waste, and manufactured is non-burning brick with low cost.
The method increase the utilization ratio of red mud, slag, desulphurize fly ash and desulfurated plaster industrial residue, have obvious economic benefit, environmental benefit and social benefit.
Accompanying drawing explanation
Fig. 1 be of the present invention a kind of take red mud as the process flow sheet of the non-evaporating brick of main raw material and preparation method thereof.
Embodiment
With industrial residue red mud for main raw material, with industrial residue desulphurize fly ash, slag, lime, desulfurated plaster for auxiliary material, take water glass as alkali-activator; Its mass percent consists of: red mud 70-80%; Desulphurize fly ash 0-10%; Slag 0-10%; Lime 5%; Desulfurated plaster 8-10%; Water glass 0-5%.
Preparation method comprises: stoving process, weigh batching and grinding hybrid technique, and concrete grammar process is as follows:
(1) stoving process: with dryer, red mud, desulphurize fly ash, slag, lime, desulfurated plaster are dried, remove free water wherein;
(2) grinding process: red mud is put into ball mill grinding to specific surface area>=600m
2/ kg;
(3) then above-mentioned three kinds of raw materials are put into ball mill combined grinding to specific surface area>=600m by weigh batching and hybrid technique: carry out weigh batching by above-mentioned raw materials formula
2/ kg;
(4) proportioning raw materials and shaping: red mud 70-80%; Desulphurize fly ash 0-10%; Slag 0-10%; Lime 5%; Desulfurated plaster 8-10%; Water glass 0-5%, separately adds water, and amount of water accounts for the 30-40% of batching material total amount; Fully stir in stirrer, pour into the mold, be placed on shaking table closely knit shaping;
(5) normal curing: wrap up laggard column criterion maintenance with plastics film, after fully solidifying 1-3 days, the demoulding is placed on bracket, is transported to maintenance place;
(6) natural curing: carry out maintenance under field conditions (factors); Also available heat air cycle maintenance, shortens curing time and production cycle.
Described red mud is that sintering process produces the industrial residue produced in aluminum oxide, and oven dry is crushed to its particle diameter and is less than 0.15mm; Described slag is graining blast-furnace cinder micro-powder, meet the graining blast-furnace cinder micro-powder that GB/T 18046-2008 standard specifies, obtain for granulated blast-furnace slag grinding after iron removal by magnetic separation process makes it reach specific surface area >=400m2/kg, the superfine graining blast-furnace cinder micro-powder that wherein particle diameter is less than 50 μm accounts for more than 80% of total mass; Described lime is unslaked lime; Ball milling fineness crosses quantity >=98% of 180 mesh sieves; Described gypsum is carry out industry byproduct desulfurated plaster that desulfurizing and purifying process obtains or natural dihydrate gypsum to the flue gas produced after sulfur-bearing feed coal, wet goods burning, and the grade of described dihydrate gypsum is greater than 90%; Described alkali-activator is the sodium silicate of modulus 1.5-2.5, aqua and pulvis.
Embodiment 1: carry out testing and Performance Detection with reference to national standard " Test methods for wall bricks " GB/T2542-92.
Grinding after being Tumblied Dry by test raw materials, weigh batching puts into ball mill mixing more afterwards.Compound is put into the water that stirrer adds 30-40% again, fully stir after-pouring and enter mould, be placed on shaking table closely knit shaping, and then carry out the normal curing 1-3d demoulding, finally transport place and carry out natural curing and can obtain finished product to 28d and turn.
Table 1 different addition quantity is on the impact of non-burning brick mechanical property
National standard to the acceptance value of non-burning brick mechanical property and classification as shown in table 2 below.
Table 2 strength grade judging criterion
| Strength grade | Average strength >=MP a | Strength standard value >=MP a |
| MU7.5 | 7.5 | 5.0 |
| MU10 | 10.0 | 6.5 |
| MU15 | 15.0 | 10.0 |
| MU20 | 20.0 | 14.0 |
| MU25 | 25.0 | 19.0 |
| MU30 | 30.0 | 23.0 |
According to the non-burning brick maintenance through 28 days that the proportioning of table 1 is worked it out, outward appearance is clean and tidy, smooth, N/D, and goods ultimate compression strength is high, dry shrinkage resistance is strong and impermeability is good, and there is not scum phenomenon in long-term placement, test-results show this non-burning brick can meet completely national standard about MU15, MU20 even requirement of strength of MU25 brick.
Claims (2)
1. non-evaporating brick based on red mud raw material and preparation method thereof, is characterized in that: with industrial residue red mud for main raw material, with industrial residue slag, lime, desulfurated plaster for auxiliary material, take water glass as alkali-activator.Its mass percent consists of: red mud 70-80%; Desulphurize fly ash 0-10%; Slag 0-10%; Lime 5%; Desulfurated plaster 8-10%; Water glass 0-5%;
Preparation method comprises: stoving process, weigh batching and grinding hybrid technique, and concrete grammar process is as follows:
(1) stoving process: with dryer, red mud, desulphurize fly ash, slag, lime, desulfurated plaster are dried, remove free water wherein;
(2) grinding process: red mud is put into ball mill and carry out grinding to specific surface area>=600m
2/ kg;
(3) then above-mentioned three kinds of raw materials are put into ball mill combined grinding to specific surface area>=600m by weigh batching and hybrid technique: carry out weigh batching by above-mentioned raw materials formula
2/ kg;
(4) proportioning raw materials and shaping: red mud 70-80%; Desulphurize fly ash 0-10%; Slag 0-10%; Lime 5%; Desulfurated plaster 8-10%; Water glass 0-5%, water accounts for the 30-40% of all material total amounts; Fully stir in stirrer, pour into the mold, be placed on shaking table closely knit shaping.
(5) normal curing: wrap up laggard column criterion maintenance with plastics film, after fully solidifying, (about 1-3d) demoulding is placed on bracket, is transported to maintenance place;
(6) natural curing: carry out maintenance under field conditions (factors); Also available heat air cycle maintenance, shortens curing time and production cycle.
2. according to claim 1 a kind of take red mud as non-evaporating brick of main raw material and preparation method thereof, it is characterized in that: described red mud is that sintering process produces in aluminum oxide the industrial residue produced, dry and be crushed to its particle diameter and be less than 0.15mm; Described slag is graining blast-furnace cinder micro-powder, meet the graining blast-furnace cinder micro-powder that GB/T 18046-2008 standard specifies, obtain for granulated blast-furnace slag grinding after iron removal by magnetic separation process makes it reach specific surface area >=400m2/kg, the superfine graining blast-furnace cinder micro-powder that wherein particle diameter is less than 50 μm accounts for more than 80% of total mass; Described lime is unslaked lime; Ball milling fineness crosses quantity >=98% of 180 mesh sieves; Described gypsum is carry out industry byproduct desulfurated plaster that desulfurizing and purifying process obtains or natural dihydrate gypsum to the flue gas produced after sulfur-bearing feed coal, wet goods burning, and the grade of described dihydrate gypsum is greater than 90%; Described alkali-activator is the sodium silicate of modulus 1.5-2.5, aqua and pulvis.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107827398A (en) * | 2017-11-01 | 2018-03-23 | 武汉钢铁有限公司 | A kind of red mud for mine filling ground polymers gravity flowing levelling mortar |
| CN108129116A (en) * | 2017-12-02 | 2018-06-08 | 北京铝能清新环境技术有限公司 | A kind of architecture decorative product and its preparation method |
| CN108178595A (en) * | 2017-12-02 | 2018-06-19 | 北京铝能清新环境技术有限公司 | Bayer process red mud desulfurated plaster steamed building blocks brick and preparation method thereof |
| CN109056749A (en) * | 2018-09-06 | 2018-12-21 | 山东科技大学 | A kind of the siccative finished bag and method of embedded rigidity flexible metal conduit skeleton |
| CN109534761A (en) * | 2018-12-07 | 2019-03-29 | 中国矿业大学 | A kind of red mud, aluminium ash base Unsteamed air-entrapping concrete and preparation method thereof |
| CN110465177A (en) * | 2019-09-27 | 2019-11-19 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Red mud Comprehensive utilization method |
| CN110734238A (en) * | 2019-10-29 | 2020-01-31 | 中冶南方都市环保工程技术股份有限公司 | method for synergistically recovering red mud and desulfurized fly ash, filler, cementing material and preparation method |
| CN110776267A (en) * | 2019-11-06 | 2020-02-11 | 中冶南方都市环保工程技术股份有限公司 | Inorganic cementing material prepared from Bayer process red mud and preparation method thereof |
| CN110885209A (en) * | 2019-12-11 | 2020-03-17 | 大连理工大学 | Red mud/yellow river sediment base polymer flood prevention stone and preparation method thereof |
| CN111205053A (en) * | 2020-01-22 | 2020-05-29 | 王诗友 | Red mud modified cementing powder and preparation process thereof |
| CN111761712A (en) * | 2020-06-29 | 2020-10-13 | 山西晋南钢铁集团有限公司 | Production method of standard brick |
| CN113414221A (en) * | 2021-06-23 | 2021-09-21 | 中国矿业大学 | Double safe digestion method for plastic package after granulation and solidification of hazardous waste micro powder |
| WO2021219058A1 (en) * | 2020-04-29 | 2021-11-04 | 青岛理工大学 | Recycled material floor tile and preparation method therefor |
| CN115159938A (en) * | 2022-04-07 | 2022-10-11 | 广西大学 | Method for preparing aerated brick by combining red mud and sugar-making filter mud |
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Cited By (16)
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| CN107827398B (en) * | 2017-11-01 | 2020-12-11 | 武汉钢铁有限公司 | Red mud geopolymer self-leveling mortar for mine backfilling |
| CN107827398A (en) * | 2017-11-01 | 2018-03-23 | 武汉钢铁有限公司 | A kind of red mud for mine filling ground polymers gravity flowing levelling mortar |
| CN108129116A (en) * | 2017-12-02 | 2018-06-08 | 北京铝能清新环境技术有限公司 | A kind of architecture decorative product and its preparation method |
| CN108178595A (en) * | 2017-12-02 | 2018-06-19 | 北京铝能清新环境技术有限公司 | Bayer process red mud desulfurated plaster steamed building blocks brick and preparation method thereof |
| CN109056749A (en) * | 2018-09-06 | 2018-12-21 | 山东科技大学 | A kind of the siccative finished bag and method of embedded rigidity flexible metal conduit skeleton |
| CN109534761A (en) * | 2018-12-07 | 2019-03-29 | 中国矿业大学 | A kind of red mud, aluminium ash base Unsteamed air-entrapping concrete and preparation method thereof |
| CN110465177A (en) * | 2019-09-27 | 2019-11-19 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Red mud Comprehensive utilization method |
| CN110734238A (en) * | 2019-10-29 | 2020-01-31 | 中冶南方都市环保工程技术股份有限公司 | method for synergistically recovering red mud and desulfurized fly ash, filler, cementing material and preparation method |
| CN110776267A (en) * | 2019-11-06 | 2020-02-11 | 中冶南方都市环保工程技术股份有限公司 | Inorganic cementing material prepared from Bayer process red mud and preparation method thereof |
| CN110885209A (en) * | 2019-12-11 | 2020-03-17 | 大连理工大学 | Red mud/yellow river sediment base polymer flood prevention stone and preparation method thereof |
| CN111205053A (en) * | 2020-01-22 | 2020-05-29 | 王诗友 | Red mud modified cementing powder and preparation process thereof |
| WO2021219058A1 (en) * | 2020-04-29 | 2021-11-04 | 青岛理工大学 | Recycled material floor tile and preparation method therefor |
| CN111761712A (en) * | 2020-06-29 | 2020-10-13 | 山西晋南钢铁集团有限公司 | Production method of standard brick |
| CN113414221A (en) * | 2021-06-23 | 2021-09-21 | 中国矿业大学 | Double safe digestion method for plastic package after granulation and solidification of hazardous waste micro powder |
| CN115159938A (en) * | 2022-04-07 | 2022-10-11 | 广西大学 | Method for preparing aerated brick by combining red mud and sugar-making filter mud |
| CN115159938B (en) * | 2022-04-07 | 2023-11-03 | 广西产研院智慧农业研究院有限公司 | Method for manufacturing aerated brick by combining red mud and sugar-making filter mud |
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Application publication date: 20150819 |