CN101205125A - Steel slag capable of being used as wear-resistant hardener aggregate as well as processing method and uses thereof - Google Patents
Steel slag capable of being used as wear-resistant hardener aggregate as well as processing method and uses thereof Download PDFInfo
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- CN101205125A CN101205125A CNA2006101476063A CN200610147606A CN101205125A CN 101205125 A CN101205125 A CN 101205125A CN A2006101476063 A CNA2006101476063 A CN A2006101476063A CN 200610147606 A CN200610147606 A CN 200610147606A CN 101205125 A CN101205125 A CN 101205125A
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- slag
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- hardener
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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
Abstract
The invention belongs to a technological field of a wearproof stiffener and a preparing method thereof.In the invention, steel scrap is used as aggregate of the wearproof stiffener; the average grain size of the steel scrap is between 0.5-3mm and f.CaO content less than or equal to 5 percent.as the aggregate of the wearproof stiffener in the invention, the steel scrap grait are strictly converted and initially prepared to obtain the wearproof stiffener with folding strength more than or equal to 11.5MPa for 28 days, compressive strength more than or equal to 80MPa for 28 days, abrasion strength rate more than or equal to 300 percent and surface strength (impression diameter) less than or equal to 3.3mm.Therefore, the wearproof stiffener prepared by the invention has great strengths in the aspects of the folding strength, the compressive strength, the abrasion strength etc. compared with the traditional wearproof stiffener.
Description
Technical field
The invention belongs to wear-resistant hardener and preparation method thereof technical field.
Background technology
Nonmetal wear-resistant hardener is by the abrasion-proof terrace finished-product material that certain grating nonmetal gathered materials, high strength cement and multiple additives premix form, and the concrete depositing on it and ground is carried out simultaneously.In the concrete initial set stage, wear-resistant hardener is spread in uniform in the surface of substrate concrete, by the special machinery polishing, make itself and concrete form an integral body, formation has high-compactness, high abrasion and the terrace of color and luster is arranged.The main mode of producing at present both at home and abroad wear-resistant hardener is to adopt higher material of hardness such as conducts such as quartz sand, the copper ore configuration wear-resistant hardener that gathers materials, improve concrete intensity and fastness to rubbing, folding strength was not less than 11.5Mpa in general 28 days, ultimate compression strength was not less than 80Mpa in 28 days, the fastness to rubbing ratio is not less than 300%, and surface strength (impression diameter) is not higher than 3.3mm.Terrace ground such as supermarket, parking lot, underground garage, school, hospital, food processing enterprises, light industry enterprise, warehouse, harbour, industrial premises, production plant now have been widely used in.
Yet in the economic structure of current resource scarcity type, energy day is becoming tight, and can increase the production cost of wear-resistant hardener greatly as gathering materials, the reduction economic benefit of enterprises with the quartz sand of costliness etc.Also cause simultaneously the waste of mine natural resources to a certain extent.
Along with the raising year by year of China's iron and steel output, the output of slag also increases thereupon, and a large amount of slags all need the big area soil to stack every year, all brings serious pollution for soil, water body, atmosphere etc., even people's health is constituted a threat to.As long as a large amount of research practices show in addition suitable processing utilization, and slag promptly is a kind of resource.China's slag is mainly used in aspects such as metallurgical industry, building materials, road construction, agricultural at present, whole nation average utilization only is 10%, and slag comprehensive utilization rates such as the developed country such as the U.S., Germany, Japan have all reached more than 70%, are higher than the degree of utilizing of China far away.The Baosteel slag, wherein all belongs to low value-added simple roadbed and fills, fills out extensive utilizations such as sea though also realized 100% comprehensive utilization through after the research and development of more than ten years more than 80%.
Summary of the invention
There is the relative unsteady state of composition in slag as industrial residue on the traditional sense, can have influence on the slag quality of item.Yet the Baosteel slag after handling through some special process can effectively disappear and lack wherein objectionable constituent f.CaO content, makes it have the characteristics of hardness height, wear-resisting, good stability, has more the characteristic advantage at some more natural rock in engineering field.At these characteristics, use in fields such as abrasion-proof terrace, abrasion-proof concretes with regard to it and to study, develop and a kind ofly have high strength, high abrasion, a tangible wear-resistant hardener of economic advantages as what gather materials with slag.
One of purpose of the present invention is at the characteristic of slag and the required performance of wear-resistant hardener, utilizes particular processing technology, is processed into the slag with certain specification and replaces the quartz sand conduct in traditional nonmetal wear-resistant hardener to gather materials.
Two of purpose of the present invention provides above-mentioned slag complete processing as wear-resistant hardener aggregate.
A further object of the invention provides above-mentioned application method as the wear-resistant hardener aggregate slag.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of slag as wear-resistant hardener aggregate, the median size of wherein f.CaO content≤5%, and slag is between 0.5-3mm.F.CaO content is meant the content of free CaO in the slag.
Preferred scheme is, its iron oxide content 〉=20%, metal Ferrum content≤2%, Morse hardness level 〉=6 grade, Pulverization ratio≤1%, water ratio≤3%.
The above-mentioned working method that is used as the slag of wear-resistant hardener aggregate the steps include:
A, the liquid steel slag that produces of will making steel are handled through the shrend chilling, drop to below 200 ℃ or 200 ℃ from 1400 ℃ in promptly 5 minutes;
The slag of b, selection f.CaO content≤5%, fragmentation through screening, is selected the slag sand of granularity between 0.5-3mm again.
It all is detection method according to standard that the present invention selects every technical indicator, is to carry out with slag chemical analysis method YB/T 140-1998 examination criteria according to cement as the content of f.CaO.In order to obtain better slag sand, can be again by technologies such as magnetic separation, optimize iron oxide content 〉=20% (examination criteria: YB/T 140-1998), metal Ferrum content≤2% (examination criteria: YB/T140-1998), Morse hardness level 〉=6 grade (examination criteria: ISO 11127-4), Pulverization ratio≤1% (examination criteria: YBJ230-91), water ratio≤3% (examination criteria: slag sand JGJ 53-92).
When above-mentioned slag was used as wear-resistant hardener, its component and proportioning were as follows:
42.5 ordinary Portland cement or strength grade are higher than 42.5 grades of ordinary Portland cements: 1 part
Slag: 1.0-2.0 part.
Preferred scheme is: add the admixture of 0.3%-3.0% in addition again, preferred scheme is to add the pigment of 0.3%-3.0%, all in the gross weight of cement and slag.Said admixture is meant that redispersable latex powder or other have water tolerance, water-retentivity, can improve the universal copolymerization powder to the cohesive force of ground, and pigment can be with one of following or their mixture: iron oxide pigment, the white powder of admiring, zinc sulfide white, iron oxide red, iron oxide yellow, inscription are green, phthalein holds indigo plant, the phthalein work is green etc.
Utilize the technology of slag configuration wear-resistant hardener and the configuration technology basically identical of traditional wear-resistant hardener, only need deposit and measure and get final product the quartz sand on the former hybrid technique line or other storage silo of gathering materials and measuring apparatus being used for slag, carry out accurate weighing according to the proportioning of design earlier before mixing, rise to mix in the mixing device with transport trolley again and stirred 2-3 minute, be packaged into bag then, be the wear-resistant hardener finished product.Use the wear-resistant hardener of slag preparation of the present invention, the construction technology of its site construction technology and traditional wear-resistant hardener is also in full accord.
Beneficial effect of the present invention:
1, with slag sand gathering materials of the present invention as wear-resistant hardener, join 28 days folding strength 〉=11.5Mpa of the wear-resistant hardener that obtains, 28 days ultimate compression strength 〉=80Mpa through strict conversion and examination, fastness to rubbing ratio 〉=300%, surface strength (impression diameter)≤3.3mm.Therefore, the wear-resistant hardener of the present invention's configuration has bigger advantage at traditional relatively wear-resistant hardeners in aspect such as folding strength, ultimate compression strength, wear resistancies.
2, have remarkable economy: generally this type of slag price is starkly lower than the quartz sand market value, reduces the production cost of wear-resistant hardener greatly.
3, this kind slag is applied to the configuration of wear-resistant hardener, promptly protects quartz sand mine resource, reduce slag again and throw aside pollution to environment, the high added value that has increased slag is used approach.With slag as special aggregate, the quartz sand of alternative traditional high-abrasive material etc. gathers materials, dispose a kind of wear-resistant hardener with high strength, wear resistance, permeability resistance, good characteristic such as dustproof, can improve the added value of slag comprehensive utilization greatly, promote slag waste resource cycling and reutilization, real realization " turning waste into wealth " can reduce concrete production cost simultaneously greatly under the situation that does not influence the various performances of wear-resistant hardener, improve economic benefit of enterprises.
Description of drawings
Fig. 1 is the process flow sheet that slag is handled
Fig. 2 utilizes slag of the present invention to do to gather materials to prepare the process flow sheet of wear-resistant hardener
Embodiment
Processing is as the special slag of wear-resistant hardener aggregate
Embodiment 1:
The liquid steel slag that steel-making produces is handled through the shrend chilling, dropped to below 200 ℃ in promptly 5 minutes.Sampling, detect with slag chemical analysis method YB/T 140-1998 according to cement, f.CaO content≤5% meets the requirements, then with these satisfactory slag crushings, screening, and in screening process, utilize the abundant deironing of multiple tracks tramp iron separator, select granularity between 0.5-3mm, iron oxide content 〉=20%, metal Ferrum content≤2%, Morse hardness level 〉=6 grade, the slag sand of Pulverization ratio≤1%, water ratio≤3%.
With above-mentioned slag preparation wear-resistant hardener
Embodiment 2～4
With configuration 1t left and right sides wear-resistant hardener is example: by weight, get slag (its f.CaO content≤5% of 2.0 millimeters of common 42.5 silicate cements, above-mentioned median size, iron oxide content 〉=20%, metal Ferrum content≤2%, Morse hardness level 〉=6 grade, Pulverization ratio≤1%, water ratio≤3%), iron oxide pigment (green 5605-2), redispersable latex powder E06PA, after stirrer mixes 2～3 minutes, promptly obtain viridian slag ground hardening agent finished product.Each embodiment components contents proportioning sees Table 1, and the anti-wear agent The performance test results of preparation sees Table 2.
Each example set partition ratio of table 1
| Material component | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 |
| 42.5 cement | 480 | 325 | 410 | 410 |
| Slag | 480 | 640 | 560 | 0 |
| Quartz sand | 0 | 0 | 0 | 560 |
| Redispersable latex powder E06PA | 3 | 30 | 15 | 15 |
| Iron oxide pigment (green 5605-2) | 30 | 3 | 15 | 15 |
Table 2 case process parameter
| Processing parameter | 28d folding strength (MPa) | 28d ultimate compression strength (MPa) | Fastness to rubbing is than (%) | Surface strength (mm) | Cost price (unit/ton) |
| Embodiment 2 | 15.4 | 101.3 | 385 | 2.87 | 519 |
| Embodiment 3 | 18.2 | 94.2 | 393 | 2.82 | 839 |
| Embodiment 4 | 17.0 | 101.0 | 388 | 2.89 | 639 |
| Comparative Examples 1 | 13.2 | 91.7 | 378 | 2.96 | 751 |
Annotate: the unit price of above each raw material is reference price:
42.5 268 yuan/ton of cement; 400 yuan/ton of quartz sands; 200 yuan/ton in slag;
7800 yuan/ton of iron oxide pigments (green 5605-2); 20000 yuan/ton of redispersable latex powder E06PA.
Claims (8)
1. slag as wear-resistant hardener aggregate, it is characterized in that: the median size of slag is between 0.5-3mm, and f.CaO content≤5%.
2. as the said slag as wear-resistant hardener aggregate of claim 1, it is characterized in that: the iron oxide content of slag 〉=20%, metal Ferrum content≤2%, Morse hardness level 〉=6 grade, Pulverization ratio≤1%, water ratio≤3%.
3. the described working method that is used as the slag of wear-resistant hardener aggregate of claim 1～2 the steps include:
A, the liquid steel slag that produces of will making steel are handled through the shrend chilling, drop to below 200 ℃ or 200 ℃ from 1400 ℃ in promptly 5 minutes;
The slag of b, selection f.CaO content≤5%, fragmentation through screening, is selected the slag sand of granularity between 0.5-3mm again.
4. the working method that is used as the slag of wear-resistant hardener aggregate as claimed in claim 3, it is characterized in that: the slag of selecting metal Ferrum content≤2% again by magnetic separation, detect at last, select iron oxide content 〉=20%, Morse hardness level 〉=6 grade, the slag sand of Pulverization ratio≤1%, water ratio≤3%.
5. the described application as the wear-resistant hardener aggregate slag of claim 1～2, it is characterized in that: component and weight proportion when making wear-resistant hardener are as follows: 42.5 ordinary Portland cements or strength grade are higher than 1 part of 42.5 grades of ordinary Portland cement, slag 1.0-2.0 part.
6. the application as the wear-resistant hardener aggregate slag as claimed in claim 5, it is characterized in that: also be added with the admixture of cement and slag gross weight 0.3%-3.0%, said admixture is meant that redispersable latex powder or other have water tolerance, water-retentivity, can improve the universal copolymerization powder to the cohesive force of ground.
7. the application as the wear-resistant hardener aggregate slag as claimed in claim 5 is characterized in that: the pigment that also is added with cement and slag gross weight 0.3%-3.0%.
8. the application as the wear-resistant hardener aggregate slag as claimed in claim 7 is characterized in that: said pigment is following a kind of or their mixture: iron oxide pigment, the white powder of admiring, zinc sulfide white, iron oxide red, iron oxide yellow, inscription is green, phthalein holds indigo plant or the phthalein work is green.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101476063A CN101205125A (en) | 2006-12-20 | 2006-12-20 | Steel slag capable of being used as wear-resistant hardener aggregate as well as processing method and uses thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101476063A CN101205125A (en) | 2006-12-20 | 2006-12-20 | Steel slag capable of being used as wear-resistant hardener aggregate as well as processing method and uses thereof |
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| CN101205125A true CN101205125A (en) | 2008-06-25 |
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| CNA2006101476063A Pending CN101205125A (en) | 2006-12-20 | 2006-12-20 | Steel slag capable of being used as wear-resistant hardener aggregate as well as processing method and uses thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819760A (en) * | 2016-03-14 | 2016-08-03 | 浙江大学 | Geopolymer terrace base material |
| CN107840585A (en) * | 2017-10-24 | 2018-03-27 | 广西力合城市矿产再生资源科技有限公司 | Method using prepared from steel slag for cement additire |
| CN108975809A (en) * | 2018-07-20 | 2018-12-11 | 成都宏基建材股份有限公司 | A kind of dry shake floor curing agent and its application method |
-
2006
- 2006-12-20 CN CNA2006101476063A patent/CN101205125A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105819760A (en) * | 2016-03-14 | 2016-08-03 | 浙江大学 | Geopolymer terrace base material |
| CN107840585A (en) * | 2017-10-24 | 2018-03-27 | 广西力合城市矿产再生资源科技有限公司 | Method using prepared from steel slag for cement additire |
| CN108975809A (en) * | 2018-07-20 | 2018-12-11 | 成都宏基建材股份有限公司 | A kind of dry shake floor curing agent and its application method |
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Application publication date: 20080625 |