CN105859162A - Method for producing sound-absorption material by leaching of slag and granulation of fine powder - Google Patents
Method for producing sound-absorption material by leaching of slag and granulation of fine powder Download PDFInfo
- Publication number
- CN105859162A CN105859162A CN201510026005.6A CN201510026005A CN105859162A CN 105859162 A CN105859162 A CN 105859162A CN 201510026005 A CN201510026005 A CN 201510026005A CN 105859162 A CN105859162 A CN 105859162A
- Authority
- CN
- China
- Prior art keywords
- slag
- sound
- fine powder
- absorbing material
- obtains
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention relates to a method for producing a sound-absorption material by leaching of slag and granulation of fine powder. The method takes steel slag discharged during a steel-making process as a raw material, calcium and magnesium components in the slag can be selectively leached by a polyphase composite solvent, the leached slag is ground to the fine powder, and then the fine powder, cement and aqueous alkali are mixed for granulation to obtain the sound-absorption material. The coarse aggregate, a binder, an early strength agent, a dispersing agent and water are mixed and stirred, and compacted and moulded, and then a mixture is subjected to maintenance and drying to obtain the sound absorbing material. The sound absorption coefficient of the sound-absorption material can reach more than 0.59, and compressive strength can reach more than 5.5 MPa. The invention provides an effective usage approach for the slag, the prepared sound-absorption material has the advantages of small density, low energy consumption of the process flow, and increased added value of the slag, and the method has good environmental benefits and economic benefits.
Description
Technical field
The invention belongs to solid waste resource recovery and utilize field, relate to the utilization of slag and the making formula of sound-absorbing material and work
Skill.
Background technology
Slag is the slag discharged in steelmaking process, is the by-product of steelmaking process.The composition of slag is more complicated, with raw material,
The difference of steel-making mode, production phase, steel grade and heat etc. and change.In general, slag be by Ca, Fe, Si, Mg,
The oxide compositions such as Al, Mn, P, its primary chemical composition is CaO, SiO2、Al2O3、FeO、Fe2O3、MgO、MnO、
P2O5, some slag is possibly together with V2O5、TiO2.The main mineral composition of slag is calcium and magnesium rhodonite
(3CaO·RO·2SiO2), monticellite (CaO MgO SiO2), tricalcium silicate (3CaO SiO2), silicic acid
Dicalcium (2CaO SiO2), dicalcium ferrite (2CaO Fe2O3), RO (R represents Mg, Fe, Mn, RO be MgO,
The solid solution that FeO, MnO are formed) etc., also part fluor-apatite (9CaO 3P2O5·CaF2), free lime (f-CaO)
Deng.The mineral composition of slag depends mainly on its chemical composition, particularly relevant with its basicity.According to statistics, 1 ton is often produced slightly
The slag of about 180 kilograms can be discharged in the steel capital.At present, China has accumulated 300,000,000 tons of slag, and land occupation more than 10,000 mu, huge altogether
The slag not only appropriation of land of amount, and it produces alkalescence dust, the environment around severe contamination during depositing because of air slaking.
At present, the main path of slag is worldwide utilized to be divided into following a few class:
1. slag cement is produced: levigate rear prepared slag cement will be mixed together after slag crushing with other admixtures.
2. concrete batching: use ground steel slag admixture to replace part of cement and apply in concrete.
3. cement admixture it is used as: substitute Iron Ore Powder and the part limestone admixture for manufacture of cement.
4. steel slag brick and building block are produced: mixed according to certain proportioning with binding agent, exciting agent by slag, and through certain technique
Route is made, and its quality can reach the standard of unselected clay fired brick.
5. foundation material it is used as: use with building stones, soil horsestone etc. simultaneously, use as foundation material through compacting.
Although the utilization ways of slag is a lot, exploitation and the application of Comprehensive Utilization of Steel Slag technology also achieve certain achievement.But it is total
For body, the utilization rate of China's slag is the highest, will reliablely and stablely apply slag to there is also many restraining factors.Such as use steel
Slag produces cement or during as cement admixture, owing to slag contains a large amount of free calcium oxide, it is steady that this can make goods there is volume
Qualitative bad problem.And with slag concrete batching or be used as foundation material fail to make full use of the potential value of slag, and
And economic benefit is little.
It is related to the prepared from steel slag report for sound-absorbing material at present, is CN 101696092 A and application publication number is at application publication number
In the patent application of CN 101695850 B, disclose a kind of prepared from steel slag method for sound-absorbing material.The defect one that the method exists
Being to use undressed slag, there is hidden danger in prepared sound absorption building block in terms of volume stability；Two is that it is directly with slag
For aggregate preparation sound absorption building block, the unit weight of gained building block is all at 1.300g cm-3Above, density is bigger, it is difficult to inhale as lightweight
Sound materials'use；Three is preparation 1100 DEG C of high-temperature calcination 1-6h of needs of its sound-absorbing material, expends a large amount of heat energy.Exempt from about slag
The research baked bricks also has some to report, in the patent specification of Application No. 200810014015.8, discloses a kind of with slag
Sand and steel-making slag powder are the method that raw material production is non-burning brick, and Steel-slag Sand, steel-making slag powder, blast furnace slag and Calx are mixed by it, size mixing with water,
After the most compressing and natural curing, in autoclave, under 0.1-2.0MPa pressure, ageing obtains steel in 3-48 hour
Slag bake-free brick.Need when the method for above-mentioned production steel scoria unburned brick is aged to carry out in autoclave, higher to equipment requirements, if
Standby cost of investment is high.It addition, its steel scoria unburned brick produced is common bearing bricks, not there is special use function, because of
This its added economic value is less.The patent application that application publication number is CN 101134155 A that this seminar proposes proposes one
Planting the method utilizing slag carbonating to fix carbon dioxide cogeneration carbonate, the carbon sequestration element in slag is optionally soaked by the method
Go out and be changed into by the calcium ion in leachate a kind of aragonite calcium carbonate product, and the shortcoming of this patent be the slag after leaching not
Can make full use of, create again a large amount of solid waste.
Summary of the invention
It is an object of the invention to provide the Processes For Effective Conversion of a kind of solid waste slag, for above-mentioned steel slag brick volume stability
Bad, density compared with big, energy consumption is high, added value is relatively low and prepared from steel slag the defect such as is underused for residue during carbonate and carried
Go out solution and make improvement.Both promoted the comprehensive utilization of slag, and alleviated its environmental problem brought, also create one
Plant the method preparing the sound-absorbing material with excellent sound absorption performance, improve the surcharge of slag.
The present invention is with leaching slag as raw material, using cement as binding agent.The preparation technology flow process of this sound-absorbing material such as accompanying drawing 1 institute
Show.Concrete steps are described below:
I slag Selectively leaching
(1) by one organic acid and a kind of organic solvent mixing, obtain organic facies, in described organic facies, add water, obtain
Heterogeneous composite solution；
(2) the heterogeneous composite solution that step (1) obtains is impregnated slag 30-150min at a temperature of 30-100 DEG C, filter
To solid residue, and dry residual washing-out 3 times with water；
II leaches slag fine powder pelletize
(3) the leaching slag obtained with step (2) is as raw material, with planetary ball mill by its ball milling 1h, with square hole screen to upper
State slag to sieve, obtain the slag fine powder of particle diameter 0.048-0.380mm；
(4) slag fine powder 30-60 part that step (3) obtains is taken, Portland cement 5-40 part, mix homogeneously, upwards
State and the material of mix homogeneously adds sodium hydrate aqueous solution 5-40 part that mass fraction concentration is 3-6%, stir and infiltrate 20min；
(5) slurry step (4) obtained is compressing under 1.0-3.5MPa, dwell time 10min；
(6) being 10-40 DEG C in temperature after sample demoulding step (5) obtained, relative humidity is the constant temperature and humidity of 70-100%
Maintenance 2d in case, the sample that maintenance completes is placed in baking oven dries 8h at a temperature of 80-100 DEG C；
Prepared by III sound-absorbing material
(7) being crushed by the drying sample disintegrating machine that step (6) obtains, screening obtains the thick of particle diameter 0.38-4.00mm
Aggregate；
(8) take coarse aggregate 50-80 part that step (7) obtains, add Portland cement 5-30 part, add cement quality
The early strength agent of 2-6% and the dispersant of cement quality 1-3%, add water 10-40 part, stir 20min after mix homogeneously；
(9) slurry step (8) obtained is compressing under 1.0-5.0MPa pressure, dwell time 10min；
(10) being 10-40 DEG C in temperature after sample demoulding step (9) obtained, relative humidity is that the constant temperature of 70-100% is permanent
Maintenance 2d in wet tank, the sample that maintenance completes is placed in baking oven dries 8h at a temperature of 80-100 DEG C, obtains sound-absorbing material.
Preferably, organic acid one in oxalic acid, acetic acid, propanoic acid, lactic acid, citric acid and butanoic acid in described step (1)
Or several, one or more in n-octyl alcohol, benzene, toluene, tributyl phosphate and trioctylphosphine oxygen phosphorus of organic solvent.
Preferably, in described step (1), the volume ratio of organic facies and aqueous phase is 0.5-5:1.
Preferably, in described step (1), organic acid concentration in organic facies is 0.5-2mol L-1。
Preferably, in described step (2), the mass ratio of slag and organic acid is 0.5-5:1.
Preferably, in described step (3), slag fine powder particle diameter is 0.048-0.380mm.
Preferably, slag fine powder 30-60 part used by pelletize, Portland cement 5-40 part, hydrogen-oxygen in described step (4)
Change sodium water solution 5-40 part, sodium hydrate aqueous solution concentration 3-6%.
Preferably, in described step (5), during pelletize, pressure used by molding is 1.0-3.5MPa.
Preferably, in described step (6) during pelletize curing temperature be 10-40 DEG C, relative humidity be 70-100%, maintenance completes
Rear baking temperature is 80-100 DEG C.
Preferably, coarse aggregate size 0.38-4.00mm in described step (7).
Preferably, sound-absorbing material formula in described step (8) is particularly as follows: coarse aggregate 50-80 part, Portland cement 5-30
Part, early strength agent is the 2-6% of cement quality, and dispersant is the 1-3% of cement quality.
Preferably, in described step (8), early strength agent is one or more in triethanolamine, calcium formate and triisopropanolamine, point
Powder is one or more in sodium tripolyphosphate, sodium hexameta phosphate and sodium pyrophosphate.
Preferably, in described step (9), sound-absorbing material typed pressure is 1.0-5.0MPa.
Preferably, in described step (10) sound-absorbing material curing temperature be 10-40 DEG C, relative humidity be 70-100%, absorb sound material
Material baking temperature is 80-100 DEG C.
The present invention is that slag provides a kind of effective utilization ways, solves prepared from steel slag for the volume stability existed during sound-absorbing material
Property is bad, density is big, energy consumption is high, added value is low and prepared from steel slag is underused for the residue after Selectively leaching during carbonate
Etc. problem.One of feature of the present invention is to carry out slag pretreatment, use be combined containing organic acid and organic solvent heterogeneous molten
Liquid carries out Selectively leaching to slag, removes a part of free calcium oxide therein, fundamentally controls free calcium oxide and causes
The bad problem of volume stability.Another feature of the present invention is that sound-absorbing material aggregate is done in slag fine powder pelletize, this process
Reduce the density of coarse aggregate, thus reduce the unit weight of sound-absorbing material, provide possibility for reaching the requirement of sound-absorbing material lightweight
Property.3rd feature of the present invention is to solve the patent Shen that application publication number is CN 101134155 A that this seminar proposes
The problem that in please, prepared from steel slag utilizes for residue after carbonate.The present invention had both promoted the comprehensive utilization of Industrial Solid Waste slag, decreased
Its problem of environmental pollution brought, it was also proposed that a kind of method preparing excellent Lightweight acoustical material, improves the extra price of slag
Value, has certain economic benefit and preferable prospects for commercial application.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, patent of the present invention is further illustrated.
Embodiment 1.
The slag selected in the present embodiment is mainly composed of :～45%CaO～10%MgO～20%SiO2,～20%FeO
And～5% other impurity, specific embodiment is as follows:
I slag Selectively leaching
(1) 70mL oxalic acid and 730mL n-octyl alcohol are mixed, obtain organic facies, in described organic facies, add 800mL
Water, obtains heterogeneous composite solution；
(2) in the heterogeneous composite solution that step (1) obtains, add slag 150g, impregnate 150min at a temperature of 60 DEG C, filter
Obtain solid residue, by residual washing-out 3 times and dry with water；
II leaches slag fine powder pelletize
(3) the leaching slag obtained with step (2) is as raw material, with planetary ball mill by its ball milling 1h, with square hole screen to upper
State slag to sieve, obtain the slag fine powder of particle diameter 0.074-0.150mm；
(4) taking the slag fine powder 400g that step (3) obtains, Portland cement 400g, mix homogeneously, to above-mentioned mixing
Uniform material adds the sodium hydrate aqueous solution 200g that mass fraction is 3%, stirs and infiltrate 20min；
(5) slurry step (4) obtained is compressing under 2.0MPa, dwell time 10min；
(6) being 20 DEG C in temperature after sample demoulding step (5) obtained, relative humidity is in the climatic chamber of 100%
Maintenance 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C；
Prepared by III sound-absorbing material
(7) being crushed by the drying sample disintegrating machine that step (6) obtains, screening obtains the thick bone of particle diameter 1.0-1.7mm
Material；
(8) take the coarse aggregate 300g that step (7) obtains, add Portland cement 100g, add triethanolamine 2g and
Sodium hexameta phosphate 1g, adds water 100g, stirs 20min after mix homogeneously；
(9) slurry step (8) obtained is compressing under 3.0MPa pressure, dwell time 10min；
(10) being 20 DEG C in temperature after sample demoulding step (9) obtained, relative humidity is in the climatic chamber of 100%
Maintenance 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C, obtains sound-absorbing material.
Standing-wave-tube method is used to measure the acoustic absorptivity of sound-absorbing material, the basic parameter of sample and testing sound absorption performance result such as table 1,
Table 2.
Table 1 embodiment one sample basic parameter
| Sample number into spectrum | Quality/g | Diameter/cm | Thickness/cm | Unit weight/g cm-3 | Comprcssive strength/MPa |
| Sample 1 | 450 | 9.80 | 4.59 | 1.3009 | 4.5 |
Table 2 embodiment one sample sound absorbing capabilities
Embodiment 2.
The slag selected in the present embodiment is mainly composed of :～45%CaO～10%MgO～20%SiO2,～20%FeO
And～5% other impurity, specific embodiment is as follows:
I slag Selectively leaching
(1) 70mL oxalic acid and 730mL n-octyl alcohol are mixed, obtain organic facies, in described organic facies, add 800mL
Water, obtains heterogeneous composite solution；
(2) in the heterogeneous composite solution that step (1) obtains, add slag 150g, impregnate 150min at a temperature of 70 DEG C, filter
Obtain solid residue, by residual washing-out 3 times and dry with water；
II leaches slag fine powder pelletize
(3) the leaching slag obtained with step (2) is as raw material, with planetary ball mill by its ball milling 1h, with square hole screen to upper
State slag to sieve, obtain the slag fine powder of particle diameter 0.048-0.074mm；
(4) taking the slag fine powder 450g that step (3) obtains, Portland cement 350g, mix homogeneously, to above-mentioned mixing
Uniform material adds the sodium hydrate aqueous solution 200g that mass fraction is 3%, stirs and infiltrate 20min；
(5) slurry step (4) obtained is compressing under 2.0MPa, dwell time 10min；
(6) being 20 DEG C in temperature after sample demoulding step (5) obtained, relative humidity is in the climatic chamber of 100%
Maintenance 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C；
Prepared by III sound-absorbing material
(7) the sample disintegrating machine being dried step (6) obtained crushes, and screening obtains the thick of particle diameter 1.0-2.8mm
Aggregate；
(8) take the coarse aggregate 300g that step (7) obtains, add Portland cement 100g, add triethanolamine 2g and
Sodium hexameta phosphate 1g, adds water 100g, stirs 20min after mix homogeneously；
(9) slurry step (8) obtained is compressing under 3.5MPa pressure, dwell time 10min；
(10) being 20 DEG C in temperature after sample demoulding step (9) obtained, relative humidity is in the climatic chamber of 100%
Maintenance 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C, obtains sound-absorbing material.
Standing-wave-tube method is used to measure the acoustic absorptivity of sound-absorbing material, the basic parameter of sample and testing sound absorption performance result such as table 3,
Table 4.
Table 3 embodiment two sample basic parameter
| Sample number into spectrum | Quality/g | Diameter/cm | Thickness/cm | Unit weight/g cm-3 | Comprcssive strength/MPa |
| Sample 2 | 463 | 9.80 | 4.62 | 1.3276 | 4.3 |
Table 4 embodiment two sample sound absorbing capabilities
Embodiment 3.
The slag selected in the present embodiment is mainly composed of :～45%CaO～10%MgO～20%SiO2,～20%FeO
And～5% other impurity, specific embodiment is as follows:
I slag Selectively leaching
(1) 70mL oxalic acid and 730mL n-octyl alcohol are mixed, obtain organic facies, in described organic facies, add 800mL
Water, obtains heterogeneous composite solution；
(2) in the heterogeneous composite solution that step (1) obtains, add slag 150g, impregnate 150min at a temperature of 80 DEG C, filter
Obtain solid residue, by residual washing-out 3 times and dry with water；
II leaches slag fine powder pelletize
(3) the leaching slag obtained with step (2) is as raw material, with planetary ball mill by its ball milling 1h, with square hole screen to upper
State slag to sieve, obtain the slag fine powder of particle diameter 0.048-0.74mm；
(4) taking the slag fine powder 500g that step (3) obtains, Portland cement 300g, mix homogeneously, to above-mentioned mixing
Uniform material adds the sodium hydrate aqueous solution 200g that mass fraction is 3%, stirs and infiltrate 20min；
(5) slurry step (4) obtained is compressing under 2.0MPa, dwell time 10min；
(6) being 20 DEG C in temperature after sample demoulding step (5) obtained, relative humidity is in the climatic chamber of 100%
Maintenance 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C；
Prepared by III sound-absorbing material
(7) being crushed by the drying sample disintegrating machine that step (6) obtains, screening obtains the thick bone of particle diameter 1.0-1.7mm
Material；
(8) take the coarse aggregate 350g that step (7) obtains, add Portland cement 50g, add triethanolamine 1g and six
Polymeric sodium metaphosphate. 0.5g, adds water 100g, stirs 20min after mix homogeneously；
(9) slurry step (8) obtained is compressing under 3.0MPa pressure, dwell time 10min；
(10) being 20 DEG C in temperature after sample demoulding step (9) obtained, relative humidity is in the climatic chamber of 100%
Maintenance 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C, obtains sound-absorbing material.
Standing-wave-tube method is used to measure the acoustic absorptivity of sound-absorbing material, the basic parameter of sample and testing sound absorption performance result such as table 5,
Table 6.
Table 5 embodiment three sample basic parameter
| Sample number into spectrum | Quality/g | Diameter/cm | Thickness/cm | Unit weight/g cm-3 | Comprcssive strength/MPa |
| Sample 3 | 473 | 9.80 | 4.71 | 1.3305 | 4.3 |
Table 6 embodiment three sample sound absorbing capabilities
Embodiment 4.
The slag selected in the present embodiment is mainly composed of :～45%CaO～10%MgO～20%SiO2,～20%FeO
And～5% other impurity, specific embodiment is as follows:
I slag Selectively leaching
(1) 50mL oxalic acid and 750mL n-octyl alcohol are mixed, obtain organic facies, in described organic facies, add 1000mL
Water, obtains heterogeneous composite solution；
(2) in the heterogeneous composite solution that step (1) obtains, add slag 200g, impregnate 120min at a temperature of 90 DEG C, filter
Obtain solid residue, by residual washing-out 3 times and dry with water；
II leaches slag fine powder pelletize
(3) the leaching slag obtained with step (2) is as raw material, with planetary ball mill by its ball milling 1h, with square hole screen to upper
State slag to sieve, obtain the slag fine powder of particle diameter 0.074-0.150mm；
(4) taking the slag fine powder 550g that step (3) obtains, Portland cement 300g, mix homogeneously, to above-mentioned mixing
Uniform material adds the sodium hydrate aqueous solution 150g that mass fraction is 5%, stirs and infiltrate 20min；
(5) slurry step (4) obtained is compressing under 2.5MPa, dwell time 10min；
(6) be 25 DEG C in temperature after the sample demoulding that step (5) is obtained, relative humidity be 90% climatic chamber in support
Protecting 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C；
Prepared by III sound-absorbing material
(7) being crushed by the drying sample disintegrating machine that step (6) obtains, screening obtains the thick bone of particle diameter 1.7-2.8mm
Material；
(8) take the coarse aggregate 350g that step (7) obtains, add Portland cement 50g, add triethanolamine 1.5g and
Sodium hexameta phosphate 1g, adds water 100g, stirs 20min after mix homogeneously；
(9) slurry step (8) obtained is compressing under 4.0MPa pressure, dwell time 10min；
(10) being 25 DEG C in temperature after sample demoulding step (9) obtained, relative humidity is in the climatic chamber of 90%
Maintenance 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C, obtains sound-absorbing material.
Standing-wave-tube method is used to measure the acoustic absorptivity of sound-absorbing material, the basic parameter of sample and testing sound absorption performance result such as table 7,
Table 8.
Table 7 embodiment four sample basic parameter
| Sample number into spectrum | Quality/g | Diameter/cm | Thickness/cm | Unit weight/g cm-3 | Comprcssive strength/MPa |
| Sample 4 | 469 | 9.80 | 4.85 | 1.2825 | 5.1 |
Table 8 embodiment four sample sound absorbing capabilities
Embodiment 5.
The slag selected in the present embodiment is mainly composed of :～45%CaO～10%MgO～20%SiO2～20%FeO
And～5% other impurity, specific embodiment is as follows:
I slag Selectively leaching
(1) 50mL oxalic acid and 750mL n-octyl alcohol are mixed, obtain organic facies, in described organic facies, add 1000mL
Water, obtains heterogeneous composite solution；
(2) in the heterogeneous composite solution that step (1) obtains, add slag 200g, impregnate 90min at a temperature of 90 DEG C, filter
Obtain solid residue, by residual washing-out 3 times and dry with water；
II leaches slag fine powder pelletize
(3) the leaching slag obtained with step (2) is as raw material, with planetary ball mill by its ball milling 1h, with square hole screen to upper
State slag to sieve, obtain the slag fine powder of particle diameter 0.074-0.150mm；
(4) taking the slag fine powder 550g that step (3) obtains, Portland cement 300g, mix homogeneously, to above-mentioned mixing
Uniform material adds the sodium hydrate aqueous solution 150g that mass fraction is 5%, stirs and infiltrate 20min；
(5) slurry step (4) obtained is compressing under 3.0MPa, dwell time 10min；
(6) be 25 DEG C in temperature after the sample demoulding that step (5) is obtained, relative humidity be 95% climatic chamber in support
Protecting 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C；
Prepared by III sound-absorbing material
(7) being crushed by the drying sample disintegrating machine that step (6) obtains, screening obtains the thick bone of particle diameter 1.4-2.4mm
Material；
(8) take the coarse aggregate 330g that step (7) obtains, add Portland cement 70g, add triethanolamine 2.1g and
Sodium hexameta phosphate 2.1g, adds water 100g, stirs 20min after mix homogeneously；
(9) slurry step (8) obtained is compressing under 4.5MPa pressure, dwell time 10min；
(10) being 25 DEG C in temperature after sample demoulding step (9) obtained, relative humidity is in the climatic chamber of 95%
Maintenance 2d, the sample that maintenance completes is placed in baking oven drying 8h at a temperature of 100 DEG C, obtains sound-absorbing material.
Standing-wave-tube method is used to measure the acoustic absorptivity of sound-absorbing material, the basic parameter of sample and testing sound absorption performance result such as table 9,
Table 10.
Table 9 embodiment five sample basic parameter
| Sample number into spectrum | Quality/g | Diameter/cm | Thickness/cm | Unit weight/g cm-3 | Comprcssive strength/MPa |
| Sample 5 | 456 | 9.80 | 4.81 | 1.2568 | 5.5 |
Table 10 embodiment five sample sound absorbing capabilities
Claims (8)
1. one kind is leached the method that sound-absorbing material is prepared in slag fine powder pelletize, it is characterised in that:
I slag Selectively leaching
(1) by one organic acid and a kind of organic solvent mixing, obtain organic facies, in described organic facies, add water, obtain heterogeneous
Composite solution；
(2) the heterogeneous composite solution that step (1) obtains is impregnated slag 30-150min at a temperature of 30-100 DEG C, be filtrated to get solid
Body residue, and dries residual washing-out 3 times with water；
II leaches slag fine powder pelletize
(3) the leaching slag obtained with step (2) is as raw material, with planetary ball mill by its ball milling 1h, with square hole screen to above-mentioned steel
Slag sieves, and obtains the slag fine powder of particle diameter 0.048-0.380mm；
(4) take slag fine powder 30-60 part (in terms of mass fraction) that step (3) obtains, Portland cement 5-40 part, mix
Close uniformly, in the material of above-mentioned mix homogeneously, add sodium hydrate aqueous solution 5-40 part that mass fraction concentration is 3-6%, stir
Mix and infiltrate 20min；
(5) slurry step (4) obtained is compressing under 1.0-3.5MPa, dwell time 10min；
(6) being 10-40 DEG C in temperature after sample demoulding step (5) obtained, relative humidity is in the climatic chamber of 70-100%
Maintenance 2d, the sample that maintenance completes is placed in baking oven dries 8h at a temperature of 80-100 DEG C；
Prepared by III sound-absorbing material
(7) being crushed by the drying sample disintegrating machine that step (6) obtains, screening obtains the coarse aggregate of particle diameter 0.38-4.00mm；
(8) take coarse aggregate 50-80 part that step (7) obtains, add Portland cement 5-30 part, add cement quality 2-6%
Early strength agent and the dispersant of cement quality 1-3%, after mix homogeneously add water 10-40 part, stir 20min；
(9) slurry step (8) obtained is compressing under 1.0-5.0MPa pressure, dwell time 10min；
(10) being 10-40 DEG C in temperature after sample demoulding step (9) obtained, relative humidity is the climatic chamber of 70-100%
Middle maintenance 2d, the sample that maintenance completes is placed in baking oven dries 8h at a temperature of 80-100 DEG C, obtains sound-absorbing material.
The most as claimed in claim 1 a kind of leach the method that sound-absorbing material is prepared in slag fine powder pelletize, it is characterised in that described step (1)
One or more in oxalic acid, acetic acid, propanoic acid, lactic acid, citric acid and butanoic acid of middle organic acid, organic solvent is selected from the most pungent
One or more in alcohol, benzene, toluene, tributyl phosphate and trioctylphosphine oxygen phosphorus.
The most as claimed in claim 1 a kind of leach the method that sound-absorbing material is prepared in slag fine powder pelletize, it is characterised in that described step (1)
The volume ratio of middle organic facies and aqueous phase is 0.5-5:1.
The most as claimed in claim 1 a kind of leach the method that sound-absorbing material is prepared in slag fine powder pelletize, it is characterised in that described step (1)
Middle organic acid concentration in organic facies is 0.5-2mol L-1。
The most as claimed in claim 1 a kind of leach the method that sound-absorbing material is prepared in slag fine powder pelletize, it is characterised in that described step (3)
Middle slag fine powder particle diameter is 0.048-0.380mm.
The most as claimed in claim 1 a kind of leach the method that sound-absorbing material is prepared in slag fine powder pelletize, it is characterised in that described step (4)
Slag fine powder 30-60 part used by middle pelletize, Portland cement 5-40 part, sodium hydrate aqueous solution 5-40 part, sodium hydroxide
Concentration of aqueous solution 3-6%.
The most as claimed in claim 1 a kind of leach the method that sound-absorbing material is prepared in slag fine powder pelletize, it is characterised in that described step (8)
Middle early strength agent is the 2-6% of cement quality, and dispersant is the 1-3% of cement quality.
The most as claimed in claim 1 a kind of leach the method that sound-absorbing material is prepared in slag fine powder pelletize, it is characterised in that described step (8)
Middle early strength agent is one or more in triethanolamine, calcium formate and triisopropanolamine, and dispersant is sodium tripolyphosphate, six inclined phosphorus
One or more in acid sodium and sodium pyrophosphate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510026005.6A CN105859162B (en) | 2015-01-19 | 2015-01-19 | A kind of method for leaching slag fine powder granulation and preparing sound-absorbing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510026005.6A CN105859162B (en) | 2015-01-19 | 2015-01-19 | A kind of method for leaching slag fine powder granulation and preparing sound-absorbing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105859162A true CN105859162A (en) | 2016-08-17 |
| CN105859162B CN105859162B (en) | 2018-03-16 |
Family
ID=56623159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510026005.6A Expired - Fee Related CN105859162B (en) | 2015-01-19 | 2015-01-19 | A kind of method for leaching slag fine powder granulation and preparing sound-absorbing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105859162B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228960A (en) * | 2019-05-24 | 2019-09-13 | 东南大学 | A kind of steel-making slag powder activation-digestion agent, steel-making slag powder method of modifying and application |
| CN113501672A (en) * | 2021-08-07 | 2021-10-15 | 山东欣润同创环保科技有限公司 | Fatifacient steel slag micro powder particle and preparation method thereof |
| CN113601694A (en) * | 2021-07-08 | 2021-11-05 | 江西联达冶金有限公司 | System for preparing steel slag baked brick |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08245244A (en) * | 1995-03-10 | 1996-09-24 | Topy Ind Ltd | Slag killing material for steel making |
| CN101696092A (en) * | 2009-10-19 | 2010-04-21 | 北京科技大学 | Method for manufacturing porous sound absorption material by using blast furnace water quenching slag |
| CN103147520A (en) * | 2013-03-13 | 2013-06-12 | 南昌航空大学 | Method for fabricating light sound absorption and insulation core board with waste slag powder modified micro-foam grains |
-
2015
- 2015-01-19 CN CN201510026005.6A patent/CN105859162B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08245244A (en) * | 1995-03-10 | 1996-09-24 | Topy Ind Ltd | Slag killing material for steel making |
| CN101696092A (en) * | 2009-10-19 | 2010-04-21 | 北京科技大学 | Method for manufacturing porous sound absorption material by using blast furnace water quenching slag |
| CN103147520A (en) * | 2013-03-13 | 2013-06-12 | 南昌航空大学 | Method for fabricating light sound absorption and insulation core board with waste slag powder modified micro-foam grains |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110228960A (en) * | 2019-05-24 | 2019-09-13 | 东南大学 | A kind of steel-making slag powder activation-digestion agent, steel-making slag powder method of modifying and application |
| CN113601694A (en) * | 2021-07-08 | 2021-11-05 | 江西联达冶金有限公司 | System for preparing steel slag baked brick |
| CN113501672A (en) * | 2021-08-07 | 2021-10-15 | 山东欣润同创环保科技有限公司 | Fatifacient steel slag micro powder particle and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105859162B (en) | 2018-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110218051A (en) | A kind of high strength lightweight aggregate concrete and its preparation process | |
| CN110041028A (en) | A kind of regeneration concrete and preparation method thereof using building waste | |
| CN108585573B (en) | Preparation method of composite active admixture for concrete | |
| CN105314955B (en) | A kind of filling in mine material | |
| CN106242509A (en) | A kind of clinker bricks in environmental protection and preparation method thereof | |
| CN104725001B (en) | A kind of composition containing electrolytic manganese residues and the application on electrolytic manganese residues double exempt from the building materials such as brick is prepared | |
| CN101182138A (en) | Steel slag property optimized handling method | |
| CN104876627A (en) | Method for preparing aerated concrete from gangue and iron tailings | |
| CN105502974B (en) | A kind of processing of nickel minerals metallurgical slag and Application way | |
| CN104987034B (en) | Method for preparing building brick through direct slag carbonization | |
| CN108609874A (en) | A kind of preparation method of copper ashes base inorganic coagulation material | |
| CN103159450A (en) | Production method of foamed concrete block manufactured from steel slag | |
| CN106277881A (en) | A kind of compounded mineral admixture | |
| CN112851277A (en) | Magnesium-cinder-based novel paving and mining filling material and preparation method thereof | |
| CN104478329B (en) | Preparation method for producing autoclaved aerated concrete block by using antimony ore tailing | |
| CN109485360A (en) | A kind of building moulding material produced using magnesium-smelting silicothermic process waste residue as raw material and its method | |
| CN112608043A (en) | High-strength nickel slag-based solid waste cementing material and preparation method thereof | |
| CN106277977A (en) | A kind of roll-forming slag building waste sheet material | |
| CN110950644A (en) | Steel slag sintered brick and preparation method thereof | |
| CN101913846A (en) | Method for synthesizing ceramsite by coal slurry, ardealite and metallurgical slag | |
| CN110002829A (en) | A kind of electrolytic manganese residues are non-burning brick and preparation method thereof | |
| CN112830693A (en) | Optimized magnesium slag-based cementing material and preparation method thereof | |
| CN107902966A (en) | A kind of unburned red mud porcelain granule mixture and preparation method thereof | |
| CN105859162A (en) | Method for producing sound-absorption material by leaching of slag and granulation of fine powder | |
| CN105294017A (en) | Quartz tailings heat-insulating building block and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20210119 |