CN103951361B - A kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing - Google Patents
A kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing Download PDFInfo
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- CN103951361B CN103951361B CN201410150819.6A CN201410150819A CN103951361B CN 103951361 B CN103951361 B CN 103951361B CN 201410150819 A CN201410150819 A CN 201410150819A CN 103951361 B CN103951361 B CN 103951361B
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Abstract
Mix a preparation method for the inorganic foamed building thermal insulation material of vanadium mine tailing, comprise the following steps: be distributed in water by vanadium mine tailing, polypropylene fibre, flyash, ordinary Portland cement, calcium stearate and trolamine, do not foamed slip; Then in the slip that do not foam, add the hydrogen peroxide that mass concentration is 30%, then by shaping for the pre-frothing slip casting obtained, then through maintenance, the demoulding, cutting, the inorganic foamed building thermal insulation material of vanadium mine tailing must be mixed.The comparable common wall of building thermal insulation material heat-transfer capability prepared by the present invention declines more than 100%, and the total thickness of body of wall and gross weight can be made all to reduce by more than 60%, and the bottleneck problem of inconvenience installed by the materials for wall solving current housing industrialization.The present invention controls the volume of hydrogen peroxide and churning time and intensity to control foaming effect, reduce its thermal conductivity simultaneously, strengthen heat insulation effect, and with hardening accelerator, accelerating chemicals as anti-sloughing agent to reduce scrap rate, prepare and novelly mix the inorganic foamed building thermal insulation material of vanadium mine tailing.
Description
[technical field]
The present invention relates to a kind of preparation method of material of construction, particularly a kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing.
[background technology]
At present, conventional both at home and abroad building thermal insulation material is divided into organic and inanimate matter two kinds.Organic building thermal insulation material has polystyrene foamed plastics (EPS, XPS), hard foamed poly urethane (PU) etc., and its advantage is light weight, insulation, heat insulation, waterproof.But these organic foam materials are easily aging, can not the life-span same with buildings, within the buildings usage period, need repeatedly to change thermal insulation layer.In addition EPS, XPS, PU etc. are macromolecule organic materials, have inflammable, non-refractory, combustionvelocity fast, produce the defects such as a large amount of toxic gases simultaneously, there is very large disaster hidden-trouble.
Patent CN102040362A " utilizing the foamed concrete material of waste cement mortar, concrete and preparation method " relates to one and utilizes waste cement mortar to make foamed concrete material, concrete and preparation method, and described foamed concrete material comprises: waste cement mortar, cement, ureaformal dehyde resin glue, gypsum, white lime, foaming agent foam.Patent CN102491699A " a kind of composite decoration foam concrete building block and preparation method thereof " provides a kind of composite decoration foam concrete building block and preparation method thereof, comprise foam concrete block body, at least one sidewall of described foam concrete block body is compounded with decoration panel; Decoration panel and foam concrete block are complex as a whole.Patent CN102501299A " a kind of preparation method of foam concrete thermal insulation blocks " discloses a kind of preparation method of foam concrete thermal insulation blocks, its preparation technology is: mechanically fully foamed by whipping agent with foaming machine, and with grout Homogeneous phase mixing, then foamed concrete is transported to mould through pumping system and carries out bulk and build; Bulk foamed concrete is cut into the fritter foamed concrete meeting dimensional requirement; Place shaping foamed concrete block in finished product die inside to this, penetration concrete in a mold, removes finished product die after compression-vibration shaping, obtains shaping building block; Finished product is obtained after above-mentioned shaping building block is placed for some time.
At present, mineral-type building thermal insulation material on market mainly comprises pearlstone class, air-entrained concrete building block, sulphur aluminosilicate inorganic heat-insulation board etc., the maximum advantage of such material is exactly that fire resistance property is strong, but due to its unit weight, thermal conductivity all higher, be unfavorable for spread.A large amount of CO need be discharged in addition owing to producing ordinary Portland cement
2and other pollutents, a large amount of ordinary Portland cement that uses must cause the environmental-protecting performance of foamed concrete material to be had a greatly reduced quality.
Generally speaking, how solving the contradiction between the insulation of lagging material, fire prevention, cost, environmental protection, is our problem demanding prompt solution.Therefore, Development of Novel lagging material not only has a extensive future, and imperative.
[summary of the invention]
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of preparation method of inorganic foamed building thermal insulation material, the method cost is low, be easy to promote, and preparation mix that vanadium mine tailing inorganic foamed building thermal insulation material intensity is high, light weight, heat insulating, fire resistance property be strong, and good endurance, long service life and environmental protection.
For achieving the above object, the present invention adopts following technical scheme:
Mix a preparation method for the inorganic foamed building thermal insulation material of vanadium mine tailing, comprise the following steps:
1) vanadium mine tailing, blast furnace slag and batching are dried to water ratio≤1%, for subsequent use; Wherein, batching refers to the mixture of one or more in flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement or light-burned bauxite gangue;
2) by levigate for solid waste M to specific surface area be 300m
2/ kg-2200m
2/ kg, wherein, solid waste M comprises blast furnace slag and batching, and blast furnace slag accounts for the 1-90% of solid waste M quality, and batching accounts for the 10-99% of solid waste M quality;
3) grinding to specific surface area is adopted to be 400m vanadium mine tailing
2/ kg-1500m
2/ kg; The vanadium mine tailing of 20-60%, the admixture of 1-10% are mixed with the solid waste M of 30-79% by mass percent, obtain gelling material N, wherein, admixture is the mixture of one or more in accelerating chemicals, hardening accelerator and toughener;
4) be polypropylene fibre: gelling material N in mass ratio: trolamine: perlite: calcium stearate=(0.2-0.6): 40:(0.3-0.6): (1.5 ~ 3): (0.3-0.6), polypropylene fibre, gelling material N, trolamine, perlite, calcium stearate being distributed in water and stirring, do not foamed slip S;
5) in the slip S that do not foam, adding mass concentration is after the hydrogen peroxide of 25%-50%, stirs, obtains pre-frothing slip, then by shaping for the pre-frothing slip casting obtained, then through maintenance, the demoulding, cutting, must mix the inorganic foamed building thermal insulation material of vanadium mine tailing; Wherein, hydrogen peroxide is (3 ~ 12) with the mass ratio of gelling material N in the slip S that do not foam: 100.
The present invention improves further and is: step 2) in, one or several in employing ball mill, sand mill, airflow milling, crusher are levigate by solid waste M.
The present invention improves further and is: in step 3), the preparation method of gelling material N is: by one or more grindings in vanadium mine tailing, flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement, light-burned bauxite gangue or blast furnace slag, then admixture is mixed, preparation gelling material, wherein, admixture is the mixture of one or more in accelerating chemicals, hardening accelerator and toughener.
The present invention improves further and is: in step 4), first, is distributed in water by polypropylene fibre, and stirs, then gelling material N successively, finally adds admixture successively and trolamine stirs.
The present invention improves further and is: in step 4), and water is tap water, or the water in more than three grades natural terrain water bodys, or is equivalent to the underground water of tap water quality, or sewage reaches water in three grades of surface water qualities after advanced treatment.
The present invention improves further and is: in step 4), and the length of polypropylene fibre is one or more in 3mm, 6mm, 9mm, 12mm.
The present invention improves further and is: in step 5), and in the slip S that do not foam, add mass concentration is after the hydrogen peroxide of 30%, stirs 4-12s.
The present invention improves further and is: in step 5), and strike off rear send watering the mould filled into curing room, curing temperature is 50-99 DEG C, and humidity is 90-100%, and curing time is 6-24 hour.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention selects hydrogen peroxide as whipping agent, when hydrogen peroxide adds after in the slip do not foamed, release gas not foaming in slip at once, form less bubble, along with the carrying out of reaction, increasing bubble produces, gaseous tension is produced around hydrogen peroxide and in zonule, this pressure acts directly on formed slip, when the shearing stress that gaseous tension causes is greater than slip Limiting shear stress, these bubble sizes increase, the slip that do not foam adding hydrogen peroxide just starts to expand, until foamed, thus obtained inorganic foamed building thermal insulation material, the hole ball-type formed due to decomposing hydrogen dioxide solution is closed and even aperture distribution, tiny pore can reduce stress concentration, improve the gas tightness of the inorganic foamed building thermal insulation material finally made,
2, the present invention is when the inorganic foamed building thermal insulation material of vanadium mine tailing is mixed in preparation, the decomposition rate of hydrogen peroxide is also controlled by change churning time and stirring intensity, thus control size and the porosity of bubble in inorganic foamed building thermal insulation material, the inorganic foamed building thermal insulation material obtained has bubble and the porosity of size uniform, while maintenance cellular insulant intensity, reduce thermal conductivity, there is certain apparent density and good heat insulation effect;
3, the present invention is in order to increase the final obtained intensity of mixing the inorganic foamed building thermal insulation material of vanadium mine tailing, also add polypropylene fibre as toughener, polypropylene fibre and cement is made to form interpenetrating(polymer)networks pilotaxitic texture, increase the toughness of foam, reduce the existence of its defect, reduce the stress concentration factor of internal fissure, effectively improve its splitting resistance, therefore, what the present invention obtained mixes the inorganic foamed building thermal insulation material good endurance of vanadium mine tailing, long service life;
4, the perlite in the present invention mainly serves the effect of support, skeleton in foaming slip, and what can prevent from obtaining mixes the inorganic foamed building thermal insulation material of vanadium mine tailing subsiding in foaming process;
5, the trolamine that the present invention adds is the permeate agent that reacts of a kind of water and gelling material and reaction promotor, can reduce by the gel material content of 20%, and product ultimate compression strength under comparatively low density is improved greatly.In addition, of the present inventionly mix the inorganic foamed building thermal insulation material of vanadium mine tailing, preparation method is simple, and production cost is low, and environmental protection.
[embodiment]
Below in conjunction with specific embodiment, the present invention is described in further details.
A kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing of the present invention, comprises the following steps:
1) vanadium mine tailing, blast furnace slag and batching are dried to water ratio≤1%, for subsequent use; Wherein, batching refers to the mixture of one or more in flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement or light-burned bauxite gangue;
2) by levigate for the solid waste M with pozzolanic activity and powder activity to specific surface area be 300m
2/ kg-2200m
2/ kg, wherein, solid waste M comprises blast furnace slag and batching, and blast furnace slag accounts for the 1-90% of solid waste M quality, and batching accounts for the 10-99% of solid waste M quality;
3) grinding to specific surface area is adopted to be 400m vanadium mine tailing
2/ kg-1500m
2/ kg; The vanadium mine tailing of 20-60%, the admixture of 1-10% are mixed with the solid waste M of 30-79% by mass percent, obtain gelling material N, wherein, admixture is the mixture of one or more in accelerating chemicals, hardening accelerator and toughener;
4) be polypropylene fibre: gelling material N in mass ratio: trolamine: perlite: calcium stearate=(0.2-0.6): 40:(0.3-0.6): (1.5 ~ 3): (0.3-0.6), polypropylene fibre, gelling material N, trolamine, perlite, calcium stearate being distributed in water and stirring, do not foamed slip S;
5) in the slip S that do not foam, adding mass concentration is after the hydrogen peroxide of 30%, stirs, obtains pre-frothing slip, then by shaping for the pre-frothing slip casting obtained, then through maintenance, the demoulding, cutting, must mix the inorganic foamed building thermal insulation material of vanadium mine tailing; Wherein, hydrogen peroxide is (3 ~ 12) with the mass ratio of gelling material N in the slip S that do not foam: 100.
The specific embodiment of the invention is as follows:
Embodiment 1:
Be distributed to by the polypropylene fibre of 0.20kg in 40kg water, stir about 30s makes it be uniformly dispersed; Then add the gelling material of 40kg, stir 1min and make it mix; Add the trolamine of the calcium stearate of 0.44kg, the perlite of 2kg and 0.20kg more successively and stir 30s and make it mix, do not foamed slip; In non-foamed slurry, add the hydrogen peroxide that 2.10kg mass concentration is 30%, stir 6s, obtain pre-frothing slip; By shaping for the pre-frothing slip casting obtained, more successively through maintenance, the demoulding and cutting, obtain porosity be 92% mix the inorganic foamed building thermal insulation material of vanadium mine tailing.
Embodiment 2:
In 40kg water, add 0.20kg polypropylene fibre, stir about 30s makes it be uniformly dispersed; Add 40kg gelling material again, stir about 1min, after mixing, then add 0.44kg calcium stearate, 2.5kg perlite and 0.22kg trolamine successively and stir about makes it mix 30s, do not foamed slip; In non-foamed slurry, adding 2.10kg mass concentration is again 30% hydrogen peroxide, and stir about 8s, obtains pre-frothing slip; By shaping for the pre-frothing slip casting obtained, more successively through maintenance, the demoulding and cutting, obtain porosity be 91% mix the inorganic foamed building thermal insulation material of vanadium mine tailing.
Embodiment 3:
In 40kg water, add 0.20kg polypropylene fibre, and stir about 30s makes it be uniformly dispersed; Then add 30kg gelling material, stir about 1min, after mixing, then add 0.44kg calcium stearate, 3kg perlite and 0.20kg trolamine successively and stir about 30s, do not foamed slip; In non-foamed slurry, adding 2.10kg mass concentration is again 30% hydrogen peroxide, and stir about 8s, obtains pre-frothing slip; By shaping for the pre-frothing slip casting obtained, then through maintenance, the demoulding, cutting etc., obtain porosity be 90.5% mix the inorganic foamed building thermal insulation material of vanadium mine tailing.
Embodiment 4:
In 40kg water, add 0.20kg polypropylene fibre, stir about 30s makes it be uniformly dispersed; Add the gelling material of 25kg again, stir about 1min, after mixing; Add 0.44kg calcium stearate, 2.60kg perlite and 0.20kg trolamine more successively and stir about 30s, do not foamed slip; In non-foamed slurry, add the hydrogen peroxide that 2.10kg mass concentration is 30% again, stir about 6s, obtain pre-frothing slip; By shaping for the pre-frothing slip casting obtained, more successively through maintenance, the demoulding and cutting, obtain porosity be 91.2% mix the inorganic foamed building thermal insulation material of vanadium mine tailing.
Dominant mechanism of the present invention is as follows:
The initial microfracture of gelling material inside containing different scale, hole and defect, when applying external force load, these positions produce the expansion that larger stress can cause crack, finally cause structure deteriorate.In order to increase the intensity of gelling material, in slip, adding polypropylene fibre (PP fiber), making itself and inorganics form interpenetrating(polymer)networks pilotaxitic texture, increase the toughness of foam, reduce the existence of its defect, reduce the stress concentration factor of internal fissure, effectively improve its splitting resistance.
The trolamine that the present invention adds is the permeate agent that reacts of a kind of water and gelling material and reaction promotor, cement and water are fully reacted, by adding the gel material content that trolamine can reduce 20%, and product ultimate compression strength under comparatively low density is improved greatly.
The present invention is by controlling the mass ratio of trolamine and gelling material in (1 ~ 1.2): 200, and such trolamine just can promote that water and gelling material fully contact and react, and then effectively improves the intensity of mixing the inorganic foamed building thermal insulation material of vanadium mine tailing.
The present invention is also by controlling the mass ratio of perlite and gelling material in (1 ~ 1.5): 20 prevent subsiding in foaming process, and wherein, the perlite in foaming slip mainly plays support, skeleton, can prevent subsiding of lagging material.
The present invention is using perlite as anti-sloughing agent, trolamine makes permeate agent and reaction promotor, polypropylene fibre is as toughener, therefore, compared with traditional lagging material, what the present invention made mixes the inorganic foamed building thermal insulation material of vanadium mine tailing while maintenance common building materials feature, and not only intensity is high, light weight, heat insulating, fire resistance property are strong, and good endurance, long service life, environmental protection, be convenient to promote the use of.
Claims (8)
1. mix a preparation method for the inorganic foamed building thermal insulation material of vanadium mine tailing, it is characterized in that, comprise the following steps:
1) vanadium mine tailing, blast furnace slag and batching are dried to water ratio≤1%, for subsequent use; Wherein, batching refers to the mixture of one or more in flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement or light-burned bauxite gangue;
2) by levigate for solid waste M to specific surface area be 300m
2/ kg-2200m
2/ kg, wherein, solid waste M comprises blast furnace slag and batching, and blast furnace slag accounts for the 1-90% of solid waste M quality, and batching accounts for the 10-99% of solid waste M quality;
3) vanadium mine tailing being milled to specific surface area is 400m
2/ kg-1500m
2/ kg; The vanadium mine tailing of 20-60%, the admixture of 1-10% are mixed with the solid waste M of 30-79% by mass percent, obtain gelling material N, wherein, admixture is the mixture of one or more in accelerating chemicals, hardening accelerator and toughener;
4) be polypropylene fibre: gelling material N in mass ratio: trolamine: perlite: calcium stearate=(0.2-0.6): 40:(0.3-0.6): (1.5 ~ 3): (0.3-0.6), polypropylene fibre, gelling material N, trolamine, perlite, calcium stearate being distributed in water and stirring, do not foamed slip S;
5) in the slip S that do not foam, adding mass concentration is after the hydrogen peroxide of 25%-50%, stir, obtain pre-frothing slip, then by shaping for the pre-frothing slip casting obtained, again through maintenance, the demoulding, cutting, the inorganic foamed building thermal insulation material of vanadium mine tailing must be mixed; Wherein, hydrogen peroxide is (3 ~ 12) with the mass ratio of gelling material N in the slip S that do not foam: 100.
2. a kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, is characterized in that: step 2) in, one or several in employing ball mill, sand mill, airflow milling, crusher are levigate by solid waste M.
3. a kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, it is characterized in that: step 3) in the preparation method of gelling material N be: by one or more grindings in vanadium mine tailing, flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement, light-burned bauxite gangue or blast furnace slag, then admixture is mixed, preparation gelling material, wherein, admixture is the mixture of one or more in accelerating chemicals, hardening accelerator and toughener.
4. a kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, it is characterized in that: step 4) in, first, polypropylene fibre is distributed in water, and stir, then add gelling material N, finally add calcium stearate, perlite and trolamine successively and stir.
5. a kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, it is characterized in that: step 4) in, water is tap water, or the water more than three grades in natural terrain water body, or be equivalent to the underground water of tap water quality, or sewage reaches water in three grades of surface water qualities after advanced treatment.
6. a kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, is characterized in that: step 4) in, the length of polypropylene fibre is one or more in 3mm, 6mm, 9mm, 12mm.
7. a kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, is characterized in that: step 5) in, in the slip S that do not foam, add mass concentration is after the hydrogen peroxide of 30%, stirs 4-12s.
8. according to a kind of preparation method mixing the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, it is characterized in that: step 5) in, strike off rear send watering the mould filled into curing room, curing temperature is 50-99 DEG C, humidity is 90-100%, and curing time is 6-24 hour.
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| CN108164228A (en) * | 2017-12-29 | 2018-06-15 | 安徽乐享家装饰设计有限公司 | A kind of preparation method of foamed heat insulating type construction material |
| CN108358544A (en) * | 2018-02-06 | 2018-08-03 | 合肥广民建材有限公司 | A kind of preparation method of thermal insulation material for building |
| CN108658568A (en) * | 2018-05-30 | 2018-10-16 | 安徽润晟建设有限公司 | A kind of preparation method of cracking resistance insulating brick |
| CN108892425A (en) * | 2018-07-23 | 2018-11-27 | 中煤地质工程有限公司北京水工环地质勘查院 | A kind of foam concrete and preparation method thereof based on vanadium tailing |
| CN111892368A (en) * | 2020-07-03 | 2020-11-06 | 商洛学院 | Preparation method of all-solid-waste porous building thermal insulation material |
| CN115536317A (en) * | 2022-10-31 | 2022-12-30 | 湖南省城乡环境建设有限公司 | Fly ash-gold tailing-aerogel-based composite thermal insulation material and preparation method thereof |
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| CN102180629A (en) * | 2011-01-27 | 2011-09-14 | 武汉理工大学 | Geopolymer taking stone coal vanadium extracted tailings as major raw materials and preparation method thereof |
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