CN103043933A - Modified phosphorus slag micropowder and application thereof - Google Patents
Modified phosphorus slag micropowder and application thereof Download PDFInfo
- Publication number
- CN103043933A CN103043933A CN2012105715266A CN201210571526A CN103043933A CN 103043933 A CN103043933 A CN 103043933A CN 2012105715266 A CN2012105715266 A CN 2012105715266A CN 201210571526 A CN201210571526 A CN 201210571526A CN 103043933 A CN103043933 A CN 103043933A
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- Prior art keywords
- phosphorous slag
- micro mist
- cement
- slag micropowder
- slag micro
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses modified phosphorus slag micropowder and application thereof. The modified phosphorus slag micropowder is prepared by mixing and levigating 98 to 92 weight percent of phosphorus slag micropowder and 2 to 8 weight percent of sulfate modifier. Compared with the prior art, the invention has the advantages that the doping amount of the phosphorus slag micropowder in water can be increased; when the doping amount of the phosphorus slag micropowder in cement reaches 30 percent, the fracture resistance and the compressive strength of the cement within 28 days are basically consistent with the strength of the cement mortar without the phosphorus slag micropowder; the comprehensive utilization of the waste slag is enhanced; land occupation and environmental pollution are reduced; the hydration heat of the cement can be reduced; the using amount of the cement is saved; and the cost of concrete is reduced.
Description
Technical field
The present invention relates to a kind of modified phosphorous slag micro mist and application thereof, belong to waste residue utilization and building material field.
Background technology
A kind of industrial residue that produces when phosphorus slag is producing yellow Phosphorus by electric oven, one ton of yellow phosphorus of every production will discharge 8～10 tons phosphorus slag.Guizhou Province's phosphorus slag annual emissions is about more than 200 ten thousand tons at present, and volume of cargo in storage over the years is at more than 1,000 ten thousand tons.Most of phosphorus slag air storage not only takies a large amount of arable lands, and through rainwater drip washing, the gradually stripping of phosphorus wherein, fluorine, permeate the ground, polluted source affects plant-growth, therefore the serious harm human health effectively, is reasonably utilized it, meets the fundamental policy of national recycling economy.
Phosphorous slag micropowder manufacturing enterprise such as (cumulative production reach more than 100 ten thousand tons) such as ultra-fine micropowder company limited of Guizhou power nation, Kweiyang state Hua Tiancheng micro mist company limiteds, all adopts directly levigate rear sale of phosphorus slag at present.An important use of phosphorous slag micropowder is mixed cement exactly, replaces part of cement, reduces Cost of Concrete.Owing to contain P in the phosphorous slag micropowder
2O
5And F etc.,
,Do not excite well the potential hydraulicity of phosphorous slag micropowder in addition, in actual application, can cause concrete strength (resistance to compression, folding strength) not high; And the actual volume of phosphorous slag micropowder is only about 10%, building trade standard JGJ/T241-2011 " artificial sand concrete utilisation technology rules " also requires the volume of phosphorous slag micropowder can not be greater than 20%, so that the utilization ratio of phosphorous slag micropowder is not high, seriously restricted the comprehensive utilization of phosphorous slag micropowder.
Summary of the invention
The object of the invention is to: a kind of modified phosphorous slag micro mist and application thereof are provided.The present invention can improve the incorporation of phosphorous slag micropowder in cement, and when making the interior volume of phosphorous slag micropowder in cement reach 30%, its 28 days anti-foldings, ultimate compression strength and not mix the intensity of sand-cement slurry of phosphorous slag micropowder basically identical; Strengthen the comprehensive utilization of waste residue, reduce land seizure and environmental pollution; Can also reduce hydration heat of cement, save cement consumption, reduce Cost of Concrete.
The present invention is achieved in that a kind of modified phosphorous slag micro mist, counts by weight percentage, and is that the vitriol properties-correcting agent by 98%～92% phosphorous slag micropowder and 2%～8% mixes, levigate making.
Count by weight percentage, aforesaid modified phosphorous slag micro mist preferably by the vitriol properties-correcting agent of 96% phosphorous slag micropowder and 4% mix, levigate making.
In the aforesaid modified phosphorous slag micro mist, vitriol properties-correcting agent adopts natural anhydrite.
In the aforesaid modified phosphorous slag micro mist, as SO in the natural anhydrite of vitriol properties-correcting agent
3Content greater than 45%.
In the aforesaid modified phosphorous slag micro mist, the specific surface area of the modified phosphorous slag micro mist after levigate is not less than 350m
2/ kg.
The application of aforementioned modified phosphorous slag micro mist in the preparation concrete.
In the application of aforesaid modified phosphorous slag micro mist, described concrete is to be prepared from by hydraulic cementing materials and rubble, sand, water and tensio-active agent; Count by weight percentage, wherein said hydraulic cementing materials is comprised of modified phosphorous slag micro mist 10%～30% and cement 90%～70%.
In the application of aforesaid modified phosphorous slag micro mist, count by weight percentage, described hydraulic cementing materials is comprised of modified phosphorous slag micro mist 30% and cement 70%.
Below be that the invention people finishes main research and the shaker test that the present invention carries out.
One, the screening of properties-correcting agent
The XRD analysis of phosphorus slag shows that the vitreum content of phosphorus slag is up to 90%, so it has certain potential hydraulicity, but need to excite its potential hydraulicity by alkali-activator or acidic activator.Cause alkaline content of cement too high owing to alkali-activator excites phosphorus slag to bring easily basic metal into, may cause concrete generation alkali and destroy the consequence of concrete structure; And the price of the alkali-activator such as potassium hydroxide, sodium hydroxide is relatively high; Unslaked lime is cleared up caking easily, be difficult for to preserve, and test shows that its modified effect is bad, so the present invention determines employing vitriol properties-correcting agent by experimental study, comes phosphorous slag micropowder is carried out modification, excites its potential hydraulicity.
Vitriol properties-correcting agent comprises natural anhydrite, semi-hydrated gypsum, dihydrate gypsum, sodium sulfate and vitriolate of tartar etc.If select sodium sulfate and vitriolate of tartar as properties-correcting agent, in concrete, introduce easily basic metal (its be strict control) in concrete, may cause concrete alkali aggregate reaction and the destruction that causes concrete structure; And the hydration reaction of semi-hydrated gypsum clock in a measure only easily causes the cement false set phenomenon; The hydration reaction of dihydrate gypsum is also very fast, can not be well and concrete gain in strength speeds match, therefore only have natural anhydrite relatively stable, can be complementary with the gain in strength speed of concrete (cement), so this research selects anhydrite as vitriol properties-correcting agent.
SO in the natural anhydrite
3Content be basic demand greater than 45%, its content is more high better, purpose is the quality that guarantees anhydrite, guarantees the effect of properties-correcting agent.SO in the anhydrite
3Theoretical content be that 58%(common 53% is just very high), 45% content is relatively general, finds easily, effect is also good, so require SO in the natural anhydrite
3Content more than 45%.
Two, the screening of content of modifier
1, table 1 has reacted when 50% ordinary portland cement is mixed 50% phosphorous slag micropowder, and different content of modifiers are on the impact of strength of cement mortar.
Table 1
As shown in Table 1, mix 4% properties-correcting agent intensity is improved effect best (illustrate: blank is neat cement mortar intensity).
Three, the screening of modified phosphorous slag micro mist volume
Table 2 has reacted after mixing 4% properties-correcting agent, and different phosphorous slag micropowder volumes are on the impact of strength of cement mortar.
Table 2
Table 3 has reacted the different phosphorous slag micropowder volumes of not mixing properties-correcting agent to the impact of strength of cement mortar.
Table 3
By table 2,3 as can be known, mix in cement in the situation of phosphorous slag micropowder of same amount, the strength of cement mortar (3 days, 7 days, 28 days) of the phosphorous slag micropowder after incorporating modified dose is all greater than the strength of cement mortar of unmodified phosphorous slag micropowder; Mix 4% properties-correcting agent in phosphorous slag micropowder after, when the volume of phosphorous slag micropowder reached 30%, its 28 days intensity were basically identical with the blank strength of cement mortar of not mixing phosphorous slag micropowder, and later stage (2 months, 3 months) gain in strength is good.
Four, the fineness of phosphorous slag micropowder screening
According in GB/T26751-2011 " the granulation electric furnace phosphoric slag powder that is used for cement and concrete " and JC/T317-2011 " the reinforcement of concrete granulation electric furnace phosphoric slag powder " standard thereof to the fineness requirement of phosphorous slag micropowder; thinner effect is better in principle; but the meticulous energy consumption that also can cause is too high, is not less than 350m so the fineness of phosphorous slag micropowder is decided to be specific surface area
2/ kg.
Compared with prior art, the potential hydraulicity that the present invention is directed to phosphorous slag micropowder has been carried out high-valued integrated application: in phosphorous slag micropowder, mix 2%～8% vitriol properties-correcting agent, and its mixing is levigate to specific surface area 〉=350m
2/ kg, to excite the potential hydraulicity of phosphorus slag, the volume of phosphorous slag micropowder in cement can be brought up to 30%, and when making the interior volume of phosphorous slag micropowder in cement reach 30%, its 28 days anti-foldings, ultimate compression strength and do not mix the intensity basically identical (anti-folding, ultimate compression strength did not reduce in namely 28 days) of the sand-cement slurry of phosphorous slag micropowder.Thereby, adopt technical solution of the present invention can digest a large amount of industrial solid castoff (phosphorus slag), strengthen the comprehensive utilization of waste residue, reduce land seizure and environmental pollution, also can save cement consumption, reduce Cost of Concrete, reduce hydration heat of cement, reduce and avoid concrete because of temperature shrinkage and the chemical shrinkage of the too high generation of cement consumption, guarantee the globality of structure.
Embodiment
Embodiments of the invention 1: take by weighing natural anhydrite (SO
3Content is greater than 45%) 2kg, 98kg mixes with phosphorous slag micropowder, and levigately is not less than 350m to specific surface area
2/ kg namely gets the modified phosphorous slag micro mist.
Embodiments of the invention 2: take by weighing natural anhydrite (SO
3Content is greater than 45%) 4kg, 96kg mixes with phosphorous slag micropowder, and levigately is not less than 350m to specific surface area
2/ kg namely gets the modified phosphorous slag micro mist.
Embodiments of the invention 3: take by weighing natural anhydrite (SO
3Content is greater than 45%) 8kg, 92kg mixes with phosphorous slag micropowder, and levigately is not less than 350m to specific surface area
2/ kg namely gets the modified phosphorous slag micro mist.
Embodiments of the invention 4: take by weighing embodiment 1 described modified phosphorous slag micro mist 100kg, 900kg mixes with cement (meeting 42.5 or 32.5 grades of GB175 " general purpose portland cement "), gets hydraulic cementing materials; Carry out mix Design according to JGJ55-2011 " design of common concrete proportioning rules ", and according to the design proportioning rigid gelling material of fetching water, add rubble and (meet GB/T14685-2011 " cobble for building, rubble " standard-required, maximum particle diameter 3cm), sand (meeting GB/T14684-2011 " building sand " standard quality requires), water and tensio-active agent (meeting JG/T223-2007 " polycarboxylate high performance water-reducing agent " standard-required), mix, the employing concrete mixer stirs, and namely gets concrete.
Embodiments of the invention 5: take by weighing embodiment 3 described modified phosphorous slag micro mist 200kg, 800kg mixes with cement (meeting 42.5 or 32.5 grades of GB175 " general purpose portland cement "), gets hydraulic cementing materials; Carry out mix Design according to JGJ55-2011 " design of common concrete proportioning rules ", and according to the design proportioning rigid gelling material of fetching water, add rubble and (meet GB/T14685-2011 " cobble for building, rubble " standard-required, maximum particle diameter 3cm), sand (meeting GB/T14684-2011 " building sand " standard quality requires), water and tensio-active agent (meeting JG/T223-2007 " polycarboxylate high performance water-reducing agent " standard-required), mix, the employing concrete mixer stirs, and namely gets concrete.
Embodiments of the invention 6: take by weighing embodiment 2 described modified phosphorous slag micro mist 300kg, 700kg mixes with cement (meeting 42.5 or 32.5 grades of GB175 " general purpose portland cement "), gets hydraulic cementing materials; Carry out mix Design according to JGJ55-2011 " design of common concrete proportioning rules ", and according to the design proportioning rigid gelling material of fetching water, add rubble (meeting GB/T14685-2011 " cobble for building, rubble " standard-required), sand (meeting GB/T14684-2011 " building sand " standard-required), water and tensio-active agent (meeting JG/T223-2007 " polycarboxylate high performance water-reducing agent " standard-required), mix, the employing concrete mixer stirs, and namely gets concrete.
Claims (8)
1. modified phosphorous slag micro mist is characterized in that: count by weight percentage, described modified phosphorous slag micro mist is that the vitriol properties-correcting agent by 98%～92% phosphorous slag micropowder and 2%～8% mixes, levigate making.
2. modified phosphorous slag micro mist according to claim 1 is characterized in that: count by weight percentage, described modified phosphorous slag micro mist is that the vitriol properties-correcting agent by 96% phosphorous slag micropowder and 4% mixes, levigate making.
3. modified phosphorous slag micro mist according to claim 1 and 2 is characterized in that: vitriol properties-correcting agent employing natural anhydrite.
4. modified phosphorous slag micro mist according to claim 3 is characterized in that: SO in the natural anhydrite
3Content greater than 45%.
5. modified phosphorous slag micro mist according to claim 4, it is characterized in that: the specific surface area of the modified phosphorous slag micro mist after levigate is not less than 350m
2/ kg.
6. the application of each described modified phosphorous slag micro mist of claim 1～5 in the preparation concrete.
7. the application of modified phosphorous slag micro mist according to claim 6 is characterized in that: described concrete is prepared from by hydraulic cementing materials and rubble, sand, water and tensio-active agent; Count by weight percentage, wherein said hydraulic cementing materials is comprised of modified phosphorous slag micro mist 10%～30% and cement 90%～70%.
8. the application of modified phosphorous slag micro mist according to claim 7 is characterized in that: count by weight percentage, described hydraulic cementing materials is comprised of modified phosphorous slag micro mist 30% and cement 70%.
Priority Applications (1)
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|---|---|---|---|
| CN2012105715266A CN103043933A (en) | 2012-12-26 | 2012-12-26 | Modified phosphorus slag micropowder and application thereof |
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|---|---|---|---|
| CN2012105715266A CN103043933A (en) | 2012-12-26 | 2012-12-26 | Modified phosphorus slag micropowder and application thereof |
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ID=48056821
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224367A (en) * | 2013-04-25 | 2013-07-31 | 黄海 | Phosphorus slag powder cement mortar |
| CN103755186A (en) * | 2013-12-24 | 2014-04-30 | 北京东方建宇混凝土科学技术研究院有限公司 | Modified phosphorous slag powder, concrete prepared from modified phosphorous slag powder and preparation method of concrete |
| CN104163596A (en) * | 2014-08-04 | 2014-11-26 | 贵州省工业固体废弃物综合利用（建材）工程技术研究中心 | Ferro-nickel slag water permeable brick for pavements and preparation method of water permeable brick |
| CN105693119A (en) * | 2016-02-02 | 2016-06-22 | 武汉理工大学 | Modified phosphorus slag powder, and preparation method and application thereof |
| CN111233355A (en) * | 2020-03-18 | 2020-06-05 | 贵州余庆泰龙建材有限公司 | High-content phosphorus slag micro-powder cementing material and application thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103224367A (en) * | 2013-04-25 | 2013-07-31 | 黄海 | Phosphorus slag powder cement mortar |
| CN103755186A (en) * | 2013-12-24 | 2014-04-30 | 北京东方建宇混凝土科学技术研究院有限公司 | Modified phosphorous slag powder, concrete prepared from modified phosphorous slag powder and preparation method of concrete |
| CN103755186B (en) * | 2013-12-24 | 2015-11-25 | 北京东方建宇混凝土科学技术研究院有限公司 | Modified phosphorous slag powder and the concrete utilizing this phosphorus slag powder to prepare and concrete method for making |
| CN104163596A (en) * | 2014-08-04 | 2014-11-26 | 贵州省工业固体废弃物综合利用（建材）工程技术研究中心 | Ferro-nickel slag water permeable brick for pavements and preparation method of water permeable brick |
| CN104163596B (en) * | 2014-08-04 | 2016-06-15 | 贵州省工业固体废弃物综合利用（建材）工程技术研究中心 | A kind of ferronickel slag road surface water-permeable brick and preparation method thereof |
| CN105693119A (en) * | 2016-02-02 | 2016-06-22 | 武汉理工大学 | Modified phosphorus slag powder, and preparation method and application thereof |
| CN105693119B (en) * | 2016-02-02 | 2017-11-21 | 武汉理工大学 | A kind of modified phosphorous slag powder and its preparation method and application |
| CN111233355A (en) * | 2020-03-18 | 2020-06-05 | 贵州余庆泰龙建材有限公司 | High-content phosphorus slag micro-powder cementing material and application thereof |
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Application publication date: 20130417 |