CN103951361A - Preparation method of vanadium-doped tailings inorganic-foam thermal-insulation material for buildings - Google Patents
Preparation method of vanadium-doped tailings inorganic-foam thermal-insulation material for buildings Download PDFInfo
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- CN103951361A CN103951361A CN201410150819.6A CN201410150819A CN103951361A CN 103951361 A CN103951361 A CN 103951361A CN 201410150819 A CN201410150819 A CN 201410150819A CN 103951361 A CN103951361 A CN 103951361A
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Abstract
The invention discloses a preparation method of a vanadium-doped tailings inorganic-foam thermal-insulation material for buildings, which comprises the following steps of dispersing vanadium tailings powder, polypropylene fibers, fly ash, common Portland cement, calcium stearate and triethanolamine in water so as to obtain non-foamed slurry; and adding hydrogen peroxide with a mass concentration of 30% into the non-foamed slurry, molding obtained pre-formed slurry by casting, and carrying out maintenance, demoulding and cutting on the obtained product so as to obtain the vanadium-doped tailings inorganic-foam thermal-insulation material for buildings. The heat transfer capability of the thermal-insulation material for buildings is reduced by over 100% in comparison with common wall bodies, so that the total thickness and total weight of a wall body can both be reduced by over 60%, thereby solving a bottleneck problem that current materials for wall bodies for housing industrialization are inconvenient to install. According to the invention, by controlling the adding amount and stirring time and strength of the hydrogen peroxide, the foaming effect is controlled, the coefficient of thermal conductivity is reduced, and the heat preservation effect is enhanced; by taking an early strength agent and an accelerator as anti-collapse agents, the rejection rate is reduced, and a novel vanadium-doped tailings inorganic-foam thermal-insulation material for buildings is prepared.
Description
[technical field]
The present invention relates to a kind of preparation method of material of construction, particularly a kind of preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing.
[background technology]
At present, both at home and abroad conventional building thermal insulation material is divided into two kinds of organic and inanimate matters.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 with the same life-span of buildings, at buildings, in the usage period, need to repeatedly change thermal insulation layer.In addition EPS, XPS, PU etc. are macromolecule organic materials, have inflammable, non-refractory, combustionvelocity is fast, produces a large amount of defects such as toxic gas simultaneously, has very large disaster hidden-trouble.
Patent CN102040362A < < utilizes foamed concrete material, concrete and the preparation method > > of waste cement mortar to relate to a kind of waste cement mortar that utilizes and makes 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.A patent CN102491699A < < 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.The preparation method > > of a patent CN102501299A < < foam concrete thermal insulation blocks discloses a kind of preparation method of foam concrete thermal insulation blocks, its preparation technology is: with foaming machine, whipping agent is fully foamed by mechanical system, and evenly mix with grout, then through pumping system, foamed concrete is transported to mould and carries out bulk and build; Bulk foamed concrete is cut into the fritter foamed concrete that meets dimensional requirement; The foamed concrete piece of this being placed to moulding at finished product mould inside, penetration concrete in mould, removes finishing die tool after compression-vibration shaping, obtain shaping building block; After being placed to for some time, above-mentioned shaping building block obtains finished product.
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 advantage of such material maximum is exactly that fire resistance property is strong, but because its unit weight, thermal conductivity are all higher, is unfavorable for spread.Owing to producing ordinary Portland cement, need discharge a large amount of CO in addition
2and other pollutents, use in a large number ordinary Portland cement 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, fire prevention, cost, environmental protection of lagging material, 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, a kind of preparation method of inorganic foamed building thermal insulation material is provided, the method cost is low, be easy to promote, and preparation mix that the inorganic foamed building thermal insulation material intensity of vanadium mine tailing 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:
A preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing, comprises the following steps:
1) vanadium mine tailing, blast furnace slag and batching are dried to water ratio≤1%, standby; Wherein, batching refers to one or more the mixture in flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement or light-burned bauxite gangue;
2) by solid waste M levigate 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 adopted to grinding to specific surface area is 400m
2/ kg-1500m
2/ kg; By mass percent, the vanadium mine tailing of 20-60%, the admixture of 1-10% and the solid waste M of 30-79% are mixed, obtain gelling material N, wherein, admixture is one or more the mixture in accelerating chemicals, hardening accelerator and toughener;
4) be in mass ratio polypropylene fibre: gelling material N: 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 are distributed in water and are stirred, and slip S obtains not foaming;
5) to after adding mass concentration to be the hydrogen peroxide of 25%-50% in the slip S that do not foam, stir, obtain pre-frothing slip, then by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, must mix the inorganic foamed building thermal insulation material of vanadium mine tailing; Wherein, in hydrogen peroxide and the slip S that do not foam, the mass ratio of gelling material N is (3～12): 100.
The present invention further improves and is: step 2), adopt one or several in ball mill, sand mill, airflow milling, crusher that solid waste M is levigate.
The present invention further improves and is: in step 3), the preparation method of gelling material N is: by vanadium mine tailing, flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement, light-burned bauxite gangue or one or more grindings in blast furnace slag, then mix admixture, preparation gelling material, wherein, admixture is one or more the mixture in accelerating chemicals, hardening accelerator and toughener.
The present invention further improves and is: in step 4), first, polypropylene fibre is distributed in water, and stirs, then gelling material N successively, finally adds admixture and trolamine to stir successively.
The present invention further improves and is: in step 4), water is tap water, or the water in three grades of above natural terrain water bodys, or is equivalent to the underground water of tap water quality, or sewage reaches the middle water of three grades of surface water qualities after advanced treatment.
The present invention further improves and is: in step 4), the length of polypropylene fibre is one or more in 3mm, 6mm, 9mm, 12mm.
The present invention further improves and is: in step 5), after adding in the slip S that do not foam mass concentration to be 30% hydrogen peroxide, stir 4-12s.
The present invention further improves and is: in step 5), send watering after the mould of filling with strikes off into curing room, curing temperature is 50-99 ℃, 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, after hydrogen peroxide adds in the slip not foaming, in the slip that do not foam, emit gas at once, form less bubble, carrying out along with reaction, increasing Bubble formation, hydrogen peroxide produces gaseous tension around and in zonule, this pressure acts directly on formed slip, when the shearing stress causing when gaseous tension is greater than slip limit shearing stress, these bubble sizes increase, add the not foaming slip of hydrogen peroxide just to start to expand, until foamed, thereby make inorganic foamed building thermal insulation material, due to the formed hole ball-type sealing of decomposing hydrogen dioxide solution and even aperture distribution, tiny pore can reduce stress concentration, improve the gas tightness of the inorganic foamed building thermal insulation material of finally making,
2, the present invention is when the inorganic foamed building thermal insulation material of vanadium mine tailing is mixed in preparation, also by changing churning time and stirring intensity, control the decomposition rate of hydrogen peroxide, thereby control size and the porosity of bubble in inorganic foamed building thermal insulation material, the inorganic foamed building thermal insulation material obtaining has bubble and the porosity of size uniform, when keeping 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 intensity of mixing the inorganic foamed building thermal insulation material of vanadium mine tailing finally making, also added polypropylene fibre as toughener, make polypropylene fibre and cement 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, the present invention obtains mixes the inorganic foamed building thermal insulation material good endurance of vanadium mine tailing, long service life;
4, the perlite in the present invention has mainly played the effect of support, skeleton in slip in foaming, 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 permeate agent and the reaction promotor that a kind of water reacts with gelling material, can reduce by 20% gel material content, and product is being improved greatly compared with ultimate compression strength under low density.In addition, the inorganic foamed building thermal insulation material of vanadium mine tailing of mixing of the present invention, 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 who mixes 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%, standby; Wherein, batching refers to one or more the mixture in flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement or light-burned bauxite gangue;
2) by the solid waste M with pozzolanic activity and powder activity levigate 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 adopted to grinding to specific surface area is 400m
2/ kg-1500m
2/ kg; By mass percent, the vanadium mine tailing of 20-60%, the admixture of 1-10% and the solid waste M of 30-79% are mixed, obtain gelling material N, wherein, admixture is one or more the mixture in accelerating chemicals, hardening accelerator and toughener;
4) be in mass ratio polypropylene fibre: gelling material N: 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 are distributed in water and are stirred, and slip S obtains not foaming;
5) to after adding in the slip S that do not foam mass concentration to be 30% hydrogen peroxide, stir, obtain pre-frothing slip, then by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, must mix the inorganic foamed building thermal insulation material of vanadium mine tailing; Wherein, in hydrogen peroxide and the slip S that do not foam, the mass ratio of gelling material N is (3～12): 100.
The specific embodiment of the invention is as follows:
Embodiment 1:
The polypropylene fibre of 0.20kg is distributed in 40kg water, and stir about 30s is uniformly dispersed it; Then the gelling material that adds 40kg, stirs 1min it is mixed; Add successively again the trolamine of the calcium stearate of 0.44kg, the perlite of 2kg and 0.20kg and stir 30s it is mixed, obtain the slip that do not foam; To adding 2.10kg mass concentration in foamed slurry not, be 30% hydrogen peroxide, stir 6s, obtain pre-frothing slip; By the pre-frothing slip casting moulding obtaining, more successively through maintenance, the demoulding and cutting, obtain porosity and 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 is uniformly dispersed it; Add 40kg gelling material, stir about 1min, after mixing, then adds 0.44kg calcium stearate, 2.5kg perlite and 0.22kg trolamine stir about to make it mix 30s successively, obtains the slip that do not foam again; To adding 2.10kg mass concentration in foamed slurry not, be 30% hydrogen peroxide again, stir about 8s, obtains pre-frothing slip; By the pre-frothing slip casting moulding obtaining, more successively through maintenance, the demoulding and cutting, obtain porosity and 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 is uniformly dispersed it; Then add 30kg gelling material, stir about 1min, after mixing, then adds 0.44kg calcium stearate, 3kg perlite and 0.20kg trolamine stir about 30s successively, obtains the slip that do not foam; To adding 2.10kg mass concentration in foamed slurry not, be 30% hydrogen peroxide again, stir about 8s, obtains pre-frothing slip; By the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting etc., obtain porosity and 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 is uniformly dispersed it; The gelling material that adds again 25kg, stir about 1min, after mixing; Add successively again 0.44kg calcium stearate, 2.60kg perlite and 0.20kg trolamine stir about 30s, obtain the slip that do not foam; To adding 2.10kg mass concentration in foamed slurry not, be 30% hydrogen peroxide again, stir about 6s, obtains pre-frothing slip; By the pre-frothing slip casting moulding obtaining, more successively through maintenance, the demoulding and cutting, obtain porosity and be 91.2% mix the inorganic foamed building thermal insulation material of vanadium mine tailing.
Dominant mechanism of the present invention is as follows:
Initial microfracture, hole and defect that different scale is contained in gelling material inside, when applying external force load, these positions produce larger stress can cause the expansion in crack, finally causes structure deteriorate.In order to increase the intensity of gelling material, in slip, add polypropylene fibre (PP fiber), make 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 permeate agent and the reaction promotor that a kind of water reacts with gelling material, cement and water can fully be reacted, by adding trolamine can reduce by 20% gel material content, and product is being improved greatly compared with ultimate compression strength under low density.
The mass ratio that the present invention passes through to control trolamine and gelling material is in (1～1.2): 200, and trolamine just can promote water fully contact and react with gelling material like this, and then effectively improves the intensity of mixing the inorganic foamed building thermal insulation material of vanadium mine tailing.
The present invention also by control perlite with the mass ratio of 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 usingd perlite as anti-sloughing agent, trolamine is made permeate agent and reaction promotor, polypropylene fibre is as toughener, therefore, compare with traditional lagging material, the present invention makes mixes the inorganic foamed building thermal insulation material of vanadium mine tailing when keeping common building material characteristics, and not only high, the light weight of intensity, 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. a preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing, is characterized in that, comprises the following steps:
1) vanadium mine tailing, blast furnace slag and batching are dried to water ratio≤1%, standby; Wherein, batching refers to one or more the mixture in flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement or light-burned bauxite gangue;
2) by solid waste M levigate 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; By mass percent, the vanadium mine tailing of 20-60%, the admixture of 1-10% and the solid waste M of 30-79% are mixed, obtain gelling material N, wherein, admixture is one or more the mixture in accelerating chemicals, hardening accelerator and toughener;
4) be in mass ratio polypropylene fibre: gelling material N: 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 are distributed in water and are stirred, and slip S obtains not foaming;
5) to after adding mass concentration to be the hydrogen peroxide of 25%-50% in the slip S that do not foam, stir, obtain pre-frothing slip, then by the pre-frothing slip casting moulding obtaining, then through maintenance, the demoulding, cutting, must mix the inorganic foamed building thermal insulation material of vanadium mine tailing; Wherein, in hydrogen peroxide and the slip S that do not foam, the mass ratio of gelling material N is (3～12): 100.
2. a kind of preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, is characterized in that: step 2) in, adopt one or several in ball mill, sand mill, airflow milling, crusher that solid waste M is levigate.
3. a kind of preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, it is characterized in that: in step 3), the preparation method of gelling material N is: by vanadium mine tailing, flyash, desulfurated plaster and cement clinker, ordinary Portland cement, aluminosulfate cement, light-burned bauxite gangue or one or more grindings in blast furnace slag, then mix admixture, preparation gelling material, wherein, admixture is one or more the mixture in accelerating chemicals, hardening accelerator and toughener.
4. a kind of preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, it is characterized in that: in step 4), first, polypropylene fibre is distributed in water, and stir, then gelling material N successively, finally adds admixture and trolamine to stir successively.
5. a kind of preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, it is characterized in that: in step 4), water is tap water, or the water in three grades of above natural terrain water bodys, or be equivalent to the underground water of tap water quality, or sewage reaches the middle water of three grades of surface water qualities after advanced treatment.
6. a kind of preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, is characterized in that: in step 4), the length of polypropylene fibre is one or more in 3mm, 6mm, 9mm, 12mm.
7. a kind of preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing according to claim 1, is characterized in that: in step 5), after adding in the slip S that do not foam mass concentration to be 30% hydrogen peroxide, stir 4-12s.
8. according to a kind of preparation method who mixes the inorganic foamed building thermal insulation material of vanadium mine tailing claimed in claim 1, it is characterized in that: in step 5), send watering after the mould of filling with strikes off into curing room, curing temperature is 50-99 ℃, humidity is 90-100%, and curing time is 6-24 hour.
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Cited By (6)
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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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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