CN107572998A - A kind of low-cost high-strength sound-absorbing porous material and its manufacturing process - Google Patents
A kind of low-cost high-strength sound-absorbing porous material and its manufacturing process Download PDFInfo
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- CN107572998A CN107572998A CN201711014744.9A CN201711014744A CN107572998A CN 107572998 A CN107572998 A CN 107572998A CN 201711014744 A CN201711014744 A CN 201711014744A CN 107572998 A CN107572998 A CN 107572998A
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- slag
- red mud
- calcium carbonate
- cement
- desulfurated plaster
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Abstract
The present invention relates to a kind of low-cost high-strength sound-absorbing porous material and its manufacturing process, sound-absorbing material is made up of the raw material of following percentage by weight：Slag 35~40%, red mud 25~30%, clinker 15~20%, swelling agent 3~5%, foaming agent hydrogen peroxide 3~5%, desulfurated plaster 1~3%, calcium carbonate 2~4% and glass fibre 1~3%.Manufacturing process includes：（1）, take raw material, it is standby；（2）, slag, calcium carbonate and desulfurated plaster coarse crushing, wet-milling；（3）Plus water stirs, add in foaming agent injection cement mold, maintenance drying, crush；（4）Plus water stirs, compressing in slurry injection mould, the sample after the demoulding conserves under cement standard curing box Plays curing condition, most afterwards through being dried to obtain finished product.The sound-absorbing material of the present invention, using calcium carbonate and gypsum as reinforcing agent, can solve the problem that the occasion noise pollution problem such as tunnel, subway, road sound absorption barrier and interior using metallurgical industry waste red mud and slag as primary raw material.
Description
Technical field
The present invention relates to Metallurgical Solid Wastes application technology as the second resource field, and in particular to a kind of porous suction of low-cost high-strength
Sound material and its manufacturing process.
Background technology
Slag is caused trade waste in steelmaking process, and its composition and silicate building material are much like, and have
Gelling property.Because it contains the f-CaO formed under high temperature, make the construction material volume stability of production poor, currently with rate
It is very low.Red mud is that bauxite leaches the solid-liquid mixed sludge discharged in production alumina process, calcium oxide and dioxy in alkali lye
SiClx total content accounts for red mud 60% or so, is adapted to do silicate building material, because its pH value is 11 or so, is used as cement raw
During material, high alkali content makes the mobility of cement be deteriorated, and its utilization rate is 5% or so at present.The stacking of Metallurgical Solid Wastes not only wastes
Fall good farmland, and pollute soil and groundwater.Therefore, Metallurgical Solid Wastes are reclaimed by cost simple process, can reduced
Environmental pollution, moreover it is possible to produce certain economic benefit.At present, environmental problem has turned into the critical problem of sustainable development, with
Industry, transportation fast development, noise pollution is gradually aggravated, and the improvement of noise pollution is as new century environmental protection
One of important content.Sound-absorbing porous material is integral by the resonance absorber structure of a large amount of different pore sizes, in larger frequency model
Enclose that interior sound absorbing capabilities are good, have good application prospect in terms of Noise measarement and architectural acoustics engineering.In lower-cost nothing
In machine non-metal porous sound-absorbing material, sound absorbing capabilities are improved（Porosity is big）, often mechanical properties decrease.
The content of the invention
The purpose of the present invention is to solve the deficiency of above-mentioned technical problem, there is provided a kind of low-cost high-strength porous sound absorption material
Material and its manufacturing process, the sound-absorbing material using metallurgical industry waste red mud and slag as primary raw material, using calcium carbonate and gypsum as
Reinforcing agent, it can solve the problem that the occasion noise pollution problem such as tunnel, subway, road sound absorption barrier and interior.
To solve the deficiency of above-mentioned technical problem, used technical scheme is the present invention：A kind of low-cost high-strength is more
Hole sound absorbing material, it is made up of the raw material of following percentage by weight：Slag 35~40%, red mud 25~30%, clinker 15~
20%th, swelling agent 3~5%, foaming agent hydrogen peroxide 3~5%, desulfurated plaster 1~3%, calcium carbonate 2~4% and glass fibre 1~3%.
As a kind of further optimization of low-cost high-strength sound-absorbing porous material of the present invention：By following percentage by weight
Raw material is made：Slag 40%, red mud 30%, clinker 16%, swelling agent 3%, foaming agent hydrogen peroxide 3%, desulfurated plaster 3%, carbonic acid
Calcium 2% and glass fibre 3%.
As a kind of further optimization of low-cost high-strength sound-absorbing porous material of the present invention：The slag, which mainly forms, is
MgO 5~8%, Fe2O310~15%, SiO210~15%, CaO 45~50% and FeO 6~10%.
As a kind of further optimization of low-cost high-strength sound-absorbing porous material of the present invention：The red mud 1.5~
2.5%MgCl2Solution soaks 24h, and the main composition after filtering, drying is SiO225~30%, Al2O310~15%,
Fe2O38~10%, CaO 45~50%, Na2O 0.3~0.5% and K2O 0.1~0.3%.
As a kind of further optimization of low-cost high-strength sound-absorbing porous material of the present invention：The clinker it is main
Form as MgO 1~3%, Fe2O32~5%, SiO220~25%, CaO 60~65%, Al2O33~5% and SO3 2~5%.
The manufacturing process of above-mentioned low-cost high-strength sound-absorbing porous material, comprises the following steps：
（1）, take according to percentage by weight slag 35~40%, pretreatment red mud 25~30%, clinker 15~20%, swelling agent 3
~5%, foam agent hydrogen peroxide 3~5%, desulfurated plaster 1~3%, calcium carbonate 2~4% and glass fibre 1~3%, and the pretreatment is red
Mud is red mud in 1.5~2.5%MgCl2Solution soaks 24h, is obtained after filtering, drying；
（2）, by slag, calcium carbonate and desulfurated plaster by disintegrating machine coarse crushing into below 5mm particle, after be respectively put into ball mill
Middle carry out wet-milling, makes the grain diameter of slag, calcium carbonate and desulfurated plaster between 0.15-0.25mm；
（3）, slag by after fine grinding, clinker, pretreatment red mud, calcium carbonate and desulfurated plaster be put into cement mixer plus
Water is stirred, and addition foaming agent hydrogen peroxide is stirred uniform to material afterwards, and slurry is injected in cement mold, is placed on cement standard maintenance
In case, conserved under the conditions of 25 DEG C, humidity are higher than 95%, then dry, broken take the particle between 0.5-1mm standby；
（4）, foam cement particle, clinker, swelling agent and glass fibre between 0.5-1mm obtained above be put into cement
In mixer, and add suitable quantity of water and stir, compressing in slurry injection mould, the sample after the demoulding is supported in cement standard
Conserved under protecting box Plays curing condition, most afterwards through being dried to obtain finished product.
Beneficial effect
For the sound-absorbing porous material of the present invention using slag and red mud as primary raw material, red mud passes through MgCl2After solution immersion, in red mud
Sodium oxide molybdena is reduced to less than 0.6%, can improve the mobility of cement, the C in red mud2S can improve the intensity of slurry.Carbonic acid
Calcium and desulfurated plaster are reinforcing agent, and in the slag hydration process after levigate, calcium carbonate can provide the nucleus of hydrated product,
Effectively promote C in slag3S aquation, calcium carbonate can also be with C in aquation slurry3A, which reacts, generates single carbon calcium aluminate,
Gypsum makes to generate more entringite in slag, red mud hydration process, the hole being filled in cement slurry, calcium carbonate and gypsum
The composite modified intensity for effectively raising slurry.Slag is simple oxide and complex oxide under high temperature（Aoxidize two-by-two
Thing or multiple oxides are combined into）Condensate, form complex oxide in steelmaking process（C2S、C3S、C3A）When
A large amount of latent heat are absorbed, sound-absorbing porous material of the present invention make use of the part latent heat in foaming, forming process, reduce common
The firing process of cementaceous sound-absorbing porous material, the production of sound-absorbing porous material low-carbon is realized, has saved the energy.
Embodiment
Further technical scheme is illustrated below in conjunction with embodiment.
Embodiment 1
A kind of manufacturing process of low-cost high-strength sound-absorbing porous material, comprises the following steps：
（1）, take according to percentage by weight slag 40%, red mud 30%, clinker 16%, swelling agent 3%, foaming agent hydrogen peroxide 3%,
Desulfurated plaster 3%, calcium carbonate 2% and glass fibre 3%, the pretreatment red mud are red mud in 1.5~2.5%MgCl2Solution soaks
24h, obtained after filtering, drying；
（2）, by slag, calcium carbonate and desulfurated plaster by disintegrating machine coarse crushing into below 5mm particle, after be respectively put into ball mill
Middle carry out wet-milling, makes the grain diameter of slag, calcium carbonate and desulfurated plaster between 0.15-0.25mm；
（3）, slag by after fine grinding, clinker, pretreatment red mud, calcium carbonate and desulfurated plaster be put into cement mixer plus
Water is stirred, and addition foaming agent hydrogen peroxide is stirred uniform to material afterwards, and slurry is injected in cement mold, is placed on cement standard maintenance
In case, conserved under the conditions of 25 DEG C, humidity are higher than 95%, then dry, broken take the particle between 0.5-1mm standby；
（4）, foam cement particle, clinker, swelling agent and glass fibre between 0.5-1mm obtained above be put into cement
In mixer, and add suitable quantity of water and stir, compressing in slurry injection mould, the sample after the demoulding is supported in cement standard
Conserved under protecting box Plays curing condition, most afterwards through being dried to obtain finished product.
Embodiment 2：
A kind of low-cost high-strength sound-absorbing porous material and its manufacturing process：
（1）, take according to percentage by weight slag 38%, red mud 28%, clinker 18%, swelling agent 5%, foaming agent hydrogen peroxide 4%,
Desulfurated plaster 2%, calcium carbonate 3% and glass fibre 2%, the pretreatment red mud are red mud in 1.5~2.5%MgCl2Solution soaks
24h, obtained after filtering, drying；
（2）, by slag, calcium carbonate and desulfurated plaster by disintegrating machine coarse crushing into below 5mm particle, after be respectively put into ball mill
Middle carry out wet-milling, makes the grain diameter of slag, calcium carbonate and desulfurated plaster between 0.15-0.25mm；
（3）, slag by after fine grinding, clinker, pretreatment red mud, calcium carbonate and desulfurated plaster be put into cement mixer plus
Water is stirred, and addition foaming agent hydrogen peroxide is stirred uniform to material afterwards, and slurry is injected in cement mold, is placed on cement standard maintenance
In case, conserved under the conditions of 25 DEG C, humidity are higher than 95%, then dry, broken take the particle between 0.5-1mm standby；
（4）, foam cement particle, clinker, swelling agent and glass fibre between 0.5-1mm obtained above be put into cement
In mixer, and add suitable quantity of water and stir, compressing in slurry injection mould, the sample after the demoulding is supported in cement standard
Conserved under protecting box Plays curing condition, most afterwards through being dried to obtain finished product.
Embodiment 3：
A kind of low-cost high-strength sound-absorbing porous material and its manufacturing process：
（1）, take according to percentage by weight slag 40%, red mud 25%, clinker 20%, swelling agent 3%, foaming agent hydrogen peroxide 5%,
Desulfurated plaster 3%, calcium carbonate 2% and glass fibre 2%, the pretreatment red mud are red mud in 1.5~2.5%MgCl2Solution soaks
24h, obtained after filtering, drying；
（2）, by slag, calcium carbonate and desulfurated plaster by disintegrating machine coarse crushing into below 5mm particle, after be respectively put into ball mill
Middle carry out wet-milling, makes the grain diameter of slag, calcium carbonate and desulfurated plaster between 0.15-0.25mm；
（3）, slag by after fine grinding, clinker, pretreatment red mud, calcium carbonate and desulfurated plaster be put into cement mixer plus
Water is stirred, and addition foaming agent hydrogen peroxide is stirred uniform to material afterwards, and slurry is injected in cement mold, is placed on cement standard maintenance
In case, conserved under the conditions of 25 DEG C, humidity are higher than 95%, then dry, broken take the particle between 0.5-1mm standby；
（4）, foam cement particle, clinker, swelling agent and glass fibre between 0.5-1mm obtained above be put into cement
In mixer, and add suitable quantity of water and stir, compressing in slurry injection mould, the sample after the demoulding is supported in cement standard
Conserved under protecting box Plays curing condition, most afterwards through being dried to obtain finished product.
According to GBJ88-85《Code for measurement of soundabsorbing coefficient and specific acoustic inpedance of standingwave》To porous suction produced by the present invention
Sound material sound absorbing capabilities are tested, and average sound absorption coefficient is higher than 0.51, according to GB/T17671-1999《Strength of cement mortar is examined
Survey method》Sample compression strength is tested, maximum compression strength is higher than 5.5MPa.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make out a little change or repair
The equivalent embodiment for equivalent variations is adornd, as long as being the technical spirit according to the present invention without departing from technical solution of the present invention content
Any simple modification, equivalent change and modification made to above example, in the range of still falling within technical solution of the present invention.
Claims (6)
- A kind of 1. low-cost high-strength sound-absorbing porous material, it is characterised in that：It is made up of the raw material of following percentage by weight：Slag 35~40%, red mud 25~30%, clinker 15~20%, swelling agent 3~5%, foaming agent hydrogen peroxide 3~5%, desulfurated plaster 1~ 3%th, calcium carbonate 2~4% and glass fibre 1~3%.
- A kind of 2. low-cost high-strength sound-absorbing porous material as claimed in claim 1, it is characterised in that：By following percentage by weight Raw material be made：Slag 40%, red mud 30%, clinker 16%, swelling agent 3%, foaming agent hydrogen peroxide 3%, desulfurated plaster 3%, carbon Sour calcium 2% and glass fibre 3%.
- A kind of 3. low-cost high-strength sound-absorbing porous material as claimed in claim 1 or 2, it is characterised in that：The slag master Form as MgO 5~8%, Fe2O310~15%, SiO210~15%, CaO 45~50% and FeO 6~10%.
- A kind of 4. low-cost high-strength sound-absorbing porous material as claimed in claim 1 or 2, it is characterised in that：The red mud exists 1.5~2.5%MgCl2Solution soaks 24h, and the main composition after filtering, drying is SiO225~30%, Al2O310~ 15%、Fe2O38~10%, CaO 45~50%, Na2O 0.3~0.5% and K2O 0.1~0.3%.
- A kind of 5. low-cost high-strength sound-absorbing porous material as claimed in claim 1 or 2, it is characterised in that：The cement is ripe The main composition of material is MgO 1~3%, Fe2O32~5%, SiO220~25%, CaO 60~65%, Al2O33~5% and SO3 2 ~5%.
- 6. the manufacturing process of low-cost high-strength sound-absorbing porous material as claimed in claim 1, it is characterised in that：Including following step Suddenly：（1）, take according to percentage by weight slag 35~40%, pretreatment red mud 25~30%, clinker 15~20%, swelling agent 3 ~5%, foam agent hydrogen peroxide 3~5%, desulfurated plaster 1~3%, calcium carbonate 2~4% and glass fibre 1~3%, and the pretreatment is red Mud is red mud in 1.5~2.5%MgCl2Solution soaks 24h, is obtained after filtering, drying；（2）, by slag, calcium carbonate and desulfurated plaster by disintegrating machine coarse crushing into below 5mm particle, after be respectively put into ball mill Middle carry out wet-milling, makes the grain diameter of slag, calcium carbonate and desulfurated plaster between 0.15-0.25mm；（3）, slag by after fine grinding, clinker, pretreatment red mud, calcium carbonate and desulfurated plaster be put into cement mixer plus Water is stirred, and addition foaming agent hydrogen peroxide is stirred uniform to material afterwards, and slurry is injected in cement mold, is placed on cement standard maintenance In case, conserved under the conditions of 25 DEG C, humidity are higher than 95%, then dry, broken take the particle between 0.5-1mm standby；（4）, foam cement particle, clinker, swelling agent and glass fibre between 0.5-1mm obtained above be put into cement In mixer, and add suitable quantity of water and stir, compressing in slurry injection mould, the sample after the demoulding is supported in cement standard Conserved under protecting box Plays curing condition, most afterwards through being dried to obtain finished product.
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Cited By (3)
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| CN108395211A (en) * | 2018-03-24 | 2018-08-14 | 广州城建职业学院 | A kind of novel sound-absorbing material for building and preparation method thereof |
| CN108395212A (en) * | 2018-06-01 | 2018-08-14 | 合肥谦尧建筑装饰工程有限公司 | A kind of sound-absorbing porous material for building and preparation method thereof |
| CN109704724A (en) * | 2018-08-27 | 2019-05-03 | 苏州谦合诚智能科技有限公司 | A kind of porous sound absorption new material and preparation method thereof |
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| CN107572998B (en) | 2020-01-07 |
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