CN103951327B - A kind of discarded vitrified brick powder baking-free ceramicite and preparation method - Google Patents
A kind of discarded vitrified brick powder baking-free ceramicite and preparation method Download PDFInfo
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- CN103951327B CN103951327B CN201410140624.3A CN201410140624A CN103951327B CN 103951327 B CN103951327 B CN 103951327B CN 201410140624 A CN201410140624 A CN 201410140624A CN 103951327 B CN103951327 B CN 103951327B
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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
A kind of discarded vitrified brick powder baking-free ceramicite and preparation method, belong to solid waste and utilize and baking-free ceramicite technical field.Take glass powder as alkali-activated carbonatite component, excite the activity of discarded vitrified brick powder and red mud to provide haydite intensity by vapor cure, and with discarded granular polystyrene particle for stopping composition, make ceramsite concrete light-weight.The composition of described haydite comprises discarded vitrified brick powder 50 ~ 70%, red mud 10 ~ 15%, glass powder 20 ~ 30%, cement 15 ~ 25%, granular polystyrene particle 0.1 ~ 0.2%.Preparation technology comprises: by raw material drying, fragmentation, grinding, sieve; Interfacial agents soaks granular polystyrene; By determine proportioning by raw material mixing and stirring; Add water in compound and stir, manufacture haydite, preparation cement paste also wraps up haydite with it; By haydite vapor cure.The present invention is raw material with building waste, mixes granular polystyrene, makes gained ceramsite concrete light-weight.The environmental protection of this baking-free ceramicite joint, what improve building waste utilizes added value.
Description
Technical field
The invention belongs to solid waste to utilize and baking-free ceramicite technical field, relate to a kind of preparation method of discarded vitrified brick powder baking-free ceramicite.
Technical background
In recent years, along with China's economic construction is constantly accelerated, the urban construction of China and transport development process are equally in continuous speed-raising.In this process, a large amount of building wastes is created.The present building waste process of China is still to pile sum landfill means, and the environmental influence that this process means cause and loss are very huge.The building waste having data to show the existing landfill of China and stacking produces huge pollution to soil and groundwater, causes direct economic loss 20,000,000,000 yuan.Thus, the sustainable development path finding out a building waste recycle is extremely necessary.Research shows, in building waste, vitrified brick goods powder has good pozzolanic activity, and after vitrified brick carries out levigate processing by mechanical grinding, more easily plays its pozzolanic activity.SiO in vitrified brick
2, Al
2o
3content is higher, and the hydrolysis of glass powder can produce alkaline environment, impels the SiO in brick powder
2, Al
2o
3key mapping fracture, be conducive to Ca (OH) in itself and cement
2reaction, generates more hydrated calcium silicate, drated calcium aluminate.Xu Rulin mixes replacing partial cement with in discarded vitrified brick powder, uses Ca (OH) respectively
2excite with the activity of water glass to vitrified brick, the compressive property of gained mortar and fracture resistance are all more satisfactory.(Xu Rulin, the activity excitation of construction waste powder and use thereof. [D] Wuhan University of Technology, 2013.) but in this course, mix alkali number more, can there is the accumulation of salt in the surface soil in certain length of time in resulting product, affect material property.Haydite, as one light skeletal for building, receives the very big attention of people with characteristics such as its light body, insulation, environmental protection.Current China Pottery product is based on clay, haydites of book structure, and the source overwhelming majority of clay, shale raw material is taken from arable land, consumes cultivated land resource.Glass powder alkali-activated carbonatite is utilized to discard vitrified brick powder to prepare the higher aglite of added value, significant to the efficient recycling of building waste.
Summary of the invention
Expending too much natural resources for overcoming existing haydite, exciting by alkali-activator building waste the defects such as the accumulation of salt in the surface soil can occur, the invention provides a kind of glass powder surface dissolution that utilizes and produce alkali and then the baking-free ceramicite exciting discarded vitrified brick to prepare and manufacture method thereof, described baking-free ceramicite utilizes discarded vitrified brick, cullet and industrial waste red mud in building waste in a large number, and mix granular polystyrene, make ceramsite concrete light-weight, and achieve the efficient recycling of building waste, energy-conserving and environment-protective.
The technical scheme that the present invention realizes above-mentioned purpose is: glass powder alkali-activated carbonatite is discarded vitrified brick powder and prepared baking-free ceramicite, its raw material composition and mass percentage thereof are: discarded vitrified brick powder is 45 ~ 60%, glass powder is 15 ~ 25%, red mud 10 ~ 15%, cement is 10 ~ 20%, granular polystyrene is 0.1 ~ 0.2% of above-mentioned four kinds of material total masses, and interfacial agents is front four kinds of material total masses 1%.
Interfacial agents has rubber powder, ether of cellulose.
The preparation method of baking-free ceramicite prepared by a kind of discarded vitrified brick powder comprises the following steps:
(1) pre-treatment of raw material: will discard vitrified brick, cullet, red mud drying, crosses 200 mesh sieves after broken also grinding; Granular polystyrene is broken, and cross 10 mesh sieves, preparation interfacial agents solution, puts into interfacial agents solution & stir by granular polystyrene particle and makes it soak;
(2) starting material mixing: by determine proportioning and will discard vitrified brick powder, glass powder, red mud, cement mixing in stirrer, stir;
(3) granulation: the granular polystyrene after wetting and water are added in stirrer successively according to determined water cement ratio, continue to stir, join in tablets press by the compound stirred, be processed into the circular granular that diameter is 10 ~ 20mm, preparation cement paste also wraps up circular granular with it;
(4) maintenance: by step 3 gained haydite 70 ~ 100 DEG C and 90% condition under vapor cure 4 ~ 6 hours, obtain the finished product.Water in interfacial agents solution is also included within the water in described water cement ratio.The preferred 0.2-0.3 of water cement ratio.
The present invention take glass powder as alkali-activated carbonatite component, excites the activity of discarded vitrified brick powder and red mud to provide haydite intensity, and with discarded granular polystyrene particle for stopping composition, make ceramsite concrete light-weight by vapor cure.Cardinal principle be utilize Abrasive glass dust surface dissolution to produce alkali to excite SiO
2, Al
2o
3the discarded vitrified brick powder that content is higher and red mud, under alkali-activator effect, the network polymerization body polymerization degree on its surface reduces, and surface forms free unsaturated link(age), Ca (OH) easily and in system
2the gelled product such as water generation reaction Calucium Silicate powder and drated calcium aluminate.
Using the discarded vitrified brick powder in building waste as the main raw material manufacturing haydite, be not only conducive to the utilization ratio improving building waste, also save natural resources, avoid the destruction to land resources; The alkali that this haydite utilizes waste glass powder surface hydrolysis to produce is to excite the pozzolanic activity of discarded brick powder and red mud, and then promote raw material aquation, glass powder is filled slurry hole as fine aggregate, improve the intensity of haydite, be mixed with the granular polystyrene of certain content, reduce the density of haydite, the baking-free ceramicite high-strength light of gained like this; This haydite does not need sintering, saves the energy, decreases environmental pollution; Utilize waste as raw material, reduce the production cost of haydite further, purified environment, improve economic benefit.
Accompanying drawing explanation
Fig. 1: alkali-activated carbonatite discards the schematic flow sheet that vitrified brick powder prepares baking-free ceramicite method.
Embodiment
Below in conjunction with embodiment, the present invention will be further described, but the present invention is not limited to following examples.In following examples the consumption of rubber powder interfacial agents be that discarded vitrified brick powder is, glass powder, red mud, cement total mass 1%.
Example 1, vitrified brick will be discarded and glass powder is levigate to 200 orders, according to discarded vitrified brick powder 45%, glass powder 20%, the proportioning mixed raw material of cement 20%, red mud 15%, stirs with stirrer; Quantitative water is got according to w/t=0.28, get part water preparation rubber powder solution infiltrate account for total mass 0.1% the granular polystyrene of mistake 10 mesh sieve, the granular polystyrene of infiltration and remaining water are added in stirrer and stirs, the compound stirred is joined in tablets press, be processed into the circular granular that diameter is 12mm, prepare certain density clean slurry, wrap up one deck cement paste to haydite; By gained haydite 90 DEG C and 90% humidity condition under vapor cure 6 hours, obtain product.Tap density is 910kg/m
3, single particle average intensity is 3.0MPa.
Example 2, vitrified brick will be discarded and glass powder is levigate to 200 orders, according to discarded vitrified brick powder 50%, glass powder 20%, the proportioning mixed raw material of cement 20%, red mud 10%, stirs with stirrer; Quantitative water is got according to w/t=0.3, get part water preparation rubber powder solution infiltrate account for total mass 0.1% the granular polystyrene of mistake 10 mesh sieve, the granular polystyrene of infiltration and remaining water are added in stirrer and stirs, the compound stirred is joined in tablets press, be processed into the circular granular that diameter is 12mm, prepare certain density clean slurry, wrap up one deck cement paste to haydite; By gained haydite 90 DEG C and 90% humidity condition under vapor cure 6 hours, obtain product.Tap density is 901kg/m
3, single particle average intensity is 2.8MPa.
Example 3, vitrified brick will be discarded and glass powder is levigate to 200 orders, according to discarded vitrified brick powder 55%, glass powder 15%, the proportioning mixed raw material of cement 15%, red mud 15%, stirs with stirrer; Quantitative water is got according to w/t=0.3, get part water preparation rubber powder solution infiltrate account for total mass 0.1% the granular polystyrene of mistake 10 mesh sieve, the granular polystyrene of infiltration and remaining water are added in stirrer and stirs, the compound stirred is joined in tablets press, be processed into the circular granular that diameter is 12mm, prepare certain density clean slurry, wrap up one deck cement paste to haydite; By gained haydite 90 DEG C and 90% humidity condition under vapor cure 6 hours, obtain product.Tap density is 889kg/m
3, single particle average intensity is 2.1MPa.
Example 4, vitrified brick will be discarded and glass powder is levigate to 200 orders, according to discarded vitrified brick powder 60%, glass powder 15%, the proportioning mixed raw material of cement 15%, red mud 10%, stirs with stirrer; Quantitative water is got according to w/t=0.3, get part water preparation rubber powder solution infiltrate account for total mass 0.1% the granular polystyrene of mistake 10 mesh sieve, the granular polystyrene of infiltration and remaining water are added in stirrer and stirs, the compound stirred is joined in tablets press, be processed into the circular granular that diameter is 12mm, prepare certain density clean slurry, wrap up one deck cement paste to haydite; By gained haydite 90 DEG C and 90% humidity condition under vapor cure 6 hours, obtain product.Tap density is 880kg/m
3, single particle average intensity is 2.4MPa.
Claims (4)
1. glass powder alkali-activated carbonatite discards the baking-free ceramicite of vitrified brick powder, it is characterized in that, its raw material composition and mass percentage thereof are: discarded vitrified brick powder is 45 ~ 60%, glass powder is 15 ~ 25%, red mud 10 ~ 15%, cement is 10 ~ 20%, and granular polystyrene is 0.1 ~ 0.2% of above-mentioned four kinds of material total masses, and interfacial agents is 1% of front four kinds of material total masses.
2. the glass powder alkali-activated carbonatite of claim 1 discards the baking-free ceramicite of vitrified brick powder, it is characterized in that, the preferred rubber powder of interfacial agents.
3. prepare the method that claim 1 glass powder alkali-activated carbonatite discards the baking-free ceramicite of vitrified brick powder, it is characterized in that, comprise the following steps:
(1) pre-treatment of raw material: will discard vitrified brick, cullet, red mud drying, crosses 200 mesh sieves after broken also grinding; Granular polystyrene is broken, and cross 10 mesh sieves, preparation interfacial agents solution, puts into interfacial agents solution & stir by granular polystyrene particle and makes it soak;
(2) starting material mixing: by determine proportioning and will discard vitrified brick powder, glass powder, red mud, cement mixing in stirrer, stir;
(3) granulation: the granular polystyrene after wetting and water are added in stirrer successively according to determined water cement ratio, continue to stir, join in tablets press by the compound stirred, be processed into the circular granular that diameter is 10 ~ 20mm, preparation cement paste also wraps up circular granular with it;
(4) maintenance: by step 3 gained haydite 70 ~ 100 DEG C and 90% condition under vapor cure 4 ~ 6 hours, obtain the finished product.
4. according to the method for claim 3, it is characterized in that, the water in interfacial agents solution is also included within the water in described water cement ratio, water cement ratio 0.2-0.3.
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193248B (en) * | 2014-08-28 | 2015-12-02 | 南通众润混凝土有限公司 | A kind of method utilizing concrete mixing plant scrap grout to prepare baking-free ceramicite |
| CN106186765A (en) * | 2016-08-10 | 2016-12-07 | 卓达新材料科技集团威海股份有限公司 | A kind of slag building waste haydite and preparation method thereof |
| CN106277878A (en) * | 2016-08-10 | 2017-01-04 | 卓达新材料科技集团威海股份有限公司 | A kind of gangue building waste haydite and preparation method thereof |
| CN106167361A (en) * | 2016-08-10 | 2016-11-30 | 卓达新材料科技集团威海股份有限公司 | A kind of alkaline residue building waste haydite and preparation method thereof |
| CN106348662A (en) * | 2016-08-10 | 2017-01-25 | 卓达新材料科技集团威海股份有限公司 | Ceramsite with slag and building waste and method for preparing ceramsite |
| CN107200492A (en) * | 2017-06-20 | 2017-09-26 | 福建朗宇星环保科技有限公司 | A kind of no-baking ardealite haydite and preparation method thereof |
| CN107129238A (en) * | 2017-07-04 | 2017-09-05 | 河南理工大学 | A kind of method that use red mud prepares unburned lightweight aggregate |
| CN110922159A (en) * | 2019-11-24 | 2020-03-27 | 沈阳理工大学 | Alkali-activated waste brick powder solidified heavy metal ion light heat-insulating material and preparation method thereof |
| CN110862252B (en) * | 2019-11-28 | 2022-02-11 | 南京师范大学 | River and lake sludge-based non-fired ultra-light ceramsite as well as preparation method and application thereof |
| CN112250361A (en) * | 2020-10-22 | 2021-01-22 | 河南建博新材料科技有限公司 | Method for preparing baking-free lightweight aggregate from shield waste slurry |
| CN114213141A (en) * | 2021-12-30 | 2022-03-22 | 燕山大学 | Baking-free ceramsite taking sodium silicate sand dust and carbide slag as excitant and preparation method thereof |
| CN114804685B (en) * | 2022-03-17 | 2023-12-22 | 广东省建筑材料研究院有限公司 | Double-layer baking-free ceramsite and preparation method thereof |
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| CN101538131A (en) * | 2009-04-14 | 2009-09-23 | 桂林工学院 | Method for preparing sintering-expanded haydite by taking red mud of Bayer process as main raw material |
| CN102643061A (en) * | 2012-05-04 | 2012-08-22 | 四川建筑职业技术学院 | Core-shell structure high-strength anti-seismic unbaked ceramsite and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538131A (en) * | 2009-04-14 | 2009-09-23 | 桂林工学院 | Method for preparing sintering-expanded haydite by taking red mud of Bayer process as main raw material |
| CN102643061A (en) * | 2012-05-04 | 2012-08-22 | 四川建筑职业技术学院 | Core-shell structure high-strength anti-seismic unbaked ceramsite and preparation method and application thereof |
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