CN106277881A - A kind of compounded mineral admixture - Google Patents
A kind of compounded mineral admixture Download PDFInfo
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- CN106277881A CN106277881A CN201510312450.9A CN201510312450A CN106277881A CN 106277881 A CN106277881 A CN 106277881A CN 201510312450 A CN201510312450 A CN 201510312450A CN 106277881 A CN106277881 A CN 106277881A
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- mineral admixture
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- slag
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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)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to building material technical field, being specifically related to a kind of highly active compounded mineral admixture, described compounded mineral admixture is made up of the raw material of following percentage: slag micropowder 50-66%, slag micro powder 25-40%, sintering desulfuration ash 1-5%, desulfurization gypsum powder 1-10%.Invention uses sintering desulfuration ash, desulfurization gypsum powder to make activity excitant, and stimulating activity is good, and its 7 days activity indexs improve 10-15%, 28d activity index on year-on-year basis and improve 7-12% on year-on-year basis, and production cost is low.Composite blend prepared by the formula system that the present invention uses is the strongest good, and long-age intensity still may proceed to increase, and applies as ready-mixed concrete, can be effectively improved working performance of concrete, reduce Slump Time losing of Large, and be prone to vibrate；Also concrete can be improved in technical specifications such as the heat of hydration, anti-folding, impervious, wear-resisting and anti-drying shrinkage.
Description
Technical field
The present invention relates to building material technical field, be specifically related to a kind of highly active compounded mineral admixture.
Background technology
Slag is the solid waste produced in steelmaking process, and existing research shows, ground steel slag is as mixed
One of solidifying soil admixture, can improve fresh concrete service behaviour, improve concrete flexural strength, wearability and
Later strength.But owing to the generation temperature of slag is high, crystallizable mineral is fine and close, causes steel-making slag powder early hydration speed
Compared with slow, hydration activity is relatively low, early strength is on the low side, therefore limits its use in concrete.
The waste residue produced when blast-furnace cinder is manUfaCtUre of pig iron, when manUfaCtUre of pig iron, adds the raw material of blast furnace, except
Iron ore and fuel (coke) are outward, in addition it is also necessary to add a considerable amount of limestone and dolomite as flux.
When furnace temperature reaches 1400～1600 DEG C, flux generates the pig iron and slag with iron ore generation pyroreaction.Blast furnace
Slag is exactly the meltable material being made up of stone-like pulse, ash, flux and other impurity that can not enter in the pig iron.
When often producing 1 ton of pig iron, the discharge capacity of blast furnace slag changes along with the grade of ore and the difference of smelting process.Per ton
The pig iron produces 0.3～1.2 ton of blast furnace slag.Along with the development of China's steel and iron industry, the discharge capacity day of blast-furnace cinder
Benefit increases.Showing according to China's associating recent statistical data of iron and steel net, within 2013, annual China crude steel yield reaches 7.82
Hundred million tons, it is meant that discharged the blast-furnace cinder of more than one hundred million tons then.
Although using the method improving steel-making slag powder specific surface area can improve steel-making slag powder activity, but energy consumption being high, technology warp
Ji property is poor.Therefore in the urgent need to a kind of activity excitation technology with technology economy advantage, and stable work is used
The recycling that industry solid waste excites the composite blend of high steel-making slag powder volume not to be only solid waste provides
Article one, effective way, and the popularization and application being also beneficial in concrete.
Summary of the invention
It is an object of the invention to provide a kind of compounded mineral admixture, this admixture activity is high, the strongest good, and
Long-age intensity still may proceed to increase, and applies in ready-mixed concrete, can be effectively improved working performance of concrete, subtract
Little Slump Time losing of Large, and be prone to vibrate, optimize the heat of hydration of concrete, anti-folding, impervious, wear-resisting and
The performances such as anti-drying shrinkage.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of compounded mineral admixture, it is characterised in that: described compounded mineral admixture is by following percentage by weight
The raw material composition of number meter:
Described compounded mineral admixture constituent total amount is 100wt% meter, and the content of described slag micropowder is
54-66wt.Preferably, described slag micropowder is S95 level slag micropowder, and its density is not less than 2.8g/cm3,
Its specific surface area is not less than 400m2/ kg, 7d activity index is not less than 75%, and 28d activity index is not less than 95%.
Described compounded mineral admixture constituent total amount is 100wt% meter, and the content of described slag micro powder is
30-40wt.Preferably, described slag micro powder be converter or electric furnace slag through magnetic separation, broken, dry, grinding
Process and prepare, its specific surface area >=400m2/ kg, metal Ferrum content is not more than 1.0%, and 7d activity index is the least
In 65%, 28d activity index is not less than 80%.
Described compounded mineral admixture constituent total amount is 100wt% meter, and the content of described sintering desulfuration ash is
1-2wt.Preferably, described sintering desulfuration ash is the desulfurization that steel enterprise sintering flue gas dry desulfurizing technique produces
By-product, wherein CaSO3Content is 20%-45%, CaCO3Content is 15%-30%, and chloride ion content is 1%-3%,
Water content is not more than 1.0%.
Described compounded mineral admixture constituent total amount is 100wt% meter, and the content of described desulfurization gypsum powder is
2-4wt.Preferably, described desulfurization gypsum powder is that wet desulphurization Gypsum Fibrosum obtains through 200 DEG C of high-temperature calcinations for 1 hour
Desulfurization semi-hydrated gypsum, its water content is not more than 1.0%, half aqueous phase >=90%.
As steel-making slag powder volume 30wt%-40wt%, employing sintering desulfuration ash is answered with desulfurization gypsum powder complex excitation
Closing mineral admixture activity to significantly improve, its 7 days activity indexs improve 9-11%, 28d activity index together on year-on-year basis
Than improving 8-11%, reach G95 grade products in GB/T50912 steel slag powder concrete application technology specification
Requirement.The present invention makes full use of the Industrial Solid Wastes such as slag, sintering desulfuration ash, desulfurization gypsum powder simultaneously, alternative
20-50% cement applications is in concrete, while consuming a large amount of Industrial Solid refuses, reduces natural resources consumption,
Achieve the target of energy-saving and emission-reduction, sustainable development.
The invention has the beneficial effects as follows:
1, the present invention uses sintering desulfuration ash, desulfurization gypsum powder to make activity excitant, and stimulating activity is good, cost
Low.Select slag micro powder specific surface area >=400m2/ kg, can effectively reduce energy consumption needed for steel slag grinding, thus have
It is beneficial to realize low-carbon economy.
2, composite blend prepared by the formula system that the present invention uses is the strongest good, and long-age intensity still can
Continue increase, as ready-mixed concrete apply, can be effectively improved working performance of concrete, reduce the slump through time
Loss, and be prone to vibrate；Also concrete can be improved in skills such as the heat of hydration, anti-folding, impervious, wear-resisting and anti-drying shrinkage
Art index.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1
Slag micro powder 30wt%,
S95 level slag micropowder 66wt%,
Sintering desulfuration ash 2wt%,
Desulfurization gypsum powder 2wt%.
Above component is made after mechanical agitation mix homogeneously sample, with reference to GB/T18046-2008 " for water
Ground granulated blast furnace slag in mud and concrete ", check complex mixture material samples various aspects of performance.Reference cement
Using 42.5 grades of portland cements of Carnis Rapanae thomasianae board, test result is shown in Table 1.
Embodiment 2:
Slag micro powder 35wt%,
S95 level slag micropowder 61wt%,
Sintering desulfuration ash 1wt%,
Desulfurization gypsum powder 3wt%.
Above component is made after mechanical agitation mix homogeneously sample, with reference to GB/T18046-2008 " for water
Ground granulated blast furnace slag in mud and concrete ", check complex mixture material samples various aspects of performance.Reference cement
Using 42.5 grades of portland cements of Carnis Rapanae thomasianae board, test result is shown in Table 1.
Embodiment 3:
Slag micro powder 40wt%,
S95 level slag micropowder 54wt%,
Sintering desulfuration ash 2wt%,
Desulfurization gypsum powder 4wt%.
Above component is made after mechanical agitation mix homogeneously sample, with reference to GB/T18046-2008 " for water
Ground granulated blast furnace slag in mud and concrete ", check complex mixture material samples various aspects of performance.Reference cement
Using 42.5 grades of portland cements of Carnis Rapanae thomasianae board, test result is shown in Table 1.
Note: control sample consists of:
Slag micro powder 30wt%, S95 level slag micropowder 70wt%.
Table 1 compounded mineral admixture performance test results
The above is presently preferred embodiments of the present invention, but the present invention should not be limited to this embodiment institute public affairs
The content opened.So every without departing from the equivalence completed under spirit disclosed in this invention or amendment, both fall within this
The scope of invention protection.
Claims (9)
1. a compounded mineral admixture, it is characterised in that: described compounded mineral admixture by following by weight
The raw material composition of percent meter:
Compounded mineral admixture the most according to claim 1, it is characterised in that: described complex mineral is mixed
Being 100wt% meter with material constituent total amount, the content of described slag micropowder is 54-66wt.
Compounded mineral admixture the most according to claim 1 and 2, it is characterised in that: described slag is micro-
Powder is S95 level slag micropowder, and its density is not less than 2.8g/cm3, its specific surface area is not less than 400m2/ kg,
7d activity index is not less than 75%, and 28d activity index is not less than 95%.
Compounded mineral admixture the most according to claim 1, it is characterised in that: described complex mineral is mixed
Being 100wt% meter with material constituent total amount, the content of described slag micro powder is 30-40wt.
5. according to the compounded mineral admixture described in claim 1 or 4, it is characterised in that: described slag is micro-
Powder be converter or electric furnace slag through magnetic separation, broken, dry, grinding processes and prepares, its specific surface area >=400m2/ kg,
Metal Ferrum content is not more than 1.0%, and 7d activity index is not less than 65%, and 28d activity index is not less than 80%.
Compounded mineral admixture the most according to claim 1, it is characterised in that: described complex mineral is mixed
Being 100wt% meter with material constituent total amount, the content of described sintering desulfuration ash is 1-2wt.
7. according to the compounded mineral admixture described in claim 1 or 6, it is characterised in that: described sintering takes off
Sulfur ash is the desulfurizing byproduct that steel enterprise sintering flue gas dry desulfurizing technique produces, wherein CaSO3Content is
20%-45%, CaCO3Content is 15%-30%, and chloride ion content is 1%-3%, and water content is not more than 1.0%.
Compounded mineral admixture the most according to claim 1, it is characterised in that: described complex mineral is mixed
Being 100wt% meter with material constituent total amount, the content of described desulfurization gypsum powder is 2-4wt.
9. according to the compounded mineral admixture described in claim 1 or 8, it is characterised in that: described desulfurization stone
Cream powder is that wet desulphurization Gypsum Fibrosum obtains desulfurization semi-hydrated gypsum in 1 hour through 200 DEG C of high-temperature calcinations, and its water content is little
In 1.0%, half aqueous phase >=90%.
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| CN201510312450.9A CN106277881A (en) | 2015-06-09 | 2015-06-09 | A kind of compounded mineral admixture |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056112A (en) * | 2017-05-25 | 2017-08-18 | 福建源鑫环保科技有限公司 | A kind of high-activity mineral blending material and preparation method thereof |
| CN109111133A (en) * | 2018-09-26 | 2019-01-01 | 马鞍山钢铁股份有限公司 | A kind of flue gas desulfurization byproduct and steel slag cooperative processing method |
| CN109704612A (en) * | 2018-12-27 | 2019-05-03 | 福建源鑫环保科技有限公司 | A kind of high activity mineral hot furnace slag mineral admixture and preparation method thereof |
| CN110698102A (en) * | 2019-10-31 | 2020-01-17 | 上海宝田新型建材有限公司 | Marine admixture |
| CN110885203A (en) * | 2019-11-20 | 2020-03-17 | 北京建筑材料科学研究总院有限公司 | Composite mineral admixture and preparation method thereof |
| CN111233413A (en) * | 2020-01-15 | 2020-06-05 | 安徽工业大学 | High-expansion-energy steel slag concrete and preparation method thereof |
| CN112851156A (en) * | 2021-01-11 | 2021-05-28 | 南京师范大学 | C25-grade alkali-activated silicon-aluminum all-solid waste concrete and preparation method thereof |
| CN113200698A (en) * | 2021-05-24 | 2021-08-03 | 河北科技大学 | Preparation method of early strength additive for solid waste based cementing material |
| CN116553852A (en) * | 2023-04-10 | 2023-08-08 | 上海复洁环保科技股份有限公司 | Retarder and reinforcing agent, retarder cement for roads and preparation method of retarder and reinforcing agent |
| CN117447104A (en) * | 2023-11-09 | 2024-01-26 | 四川君和环保股份有限公司 | Cementing material and C60 concrete containing high-titanium blast furnace slag |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107056112A (en) * | 2017-05-25 | 2017-08-18 | 福建源鑫环保科技有限公司 | A kind of high-activity mineral blending material and preparation method thereof |
| CN107056112B (en) * | 2017-05-25 | 2019-10-11 | 福建源鑫环保科技有限公司 | A kind of high-activity mineral blending material and preparation method thereof |
| CN109111133A (en) * | 2018-09-26 | 2019-01-01 | 马鞍山钢铁股份有限公司 | A kind of flue gas desulfurization byproduct and steel slag cooperative processing method |
| CN109704612A (en) * | 2018-12-27 | 2019-05-03 | 福建源鑫环保科技有限公司 | A kind of high activity mineral hot furnace slag mineral admixture and preparation method thereof |
| CN110698102A (en) * | 2019-10-31 | 2020-01-17 | 上海宝田新型建材有限公司 | Marine admixture |
| CN110885203A (en) * | 2019-11-20 | 2020-03-17 | 北京建筑材料科学研究总院有限公司 | Composite mineral admixture and preparation method thereof |
| CN111233413A (en) * | 2020-01-15 | 2020-06-05 | 安徽工业大学 | High-expansion-energy steel slag concrete and preparation method thereof |
| CN111233413B (en) * | 2020-01-15 | 2022-03-11 | 安徽工业大学 | High-expansion-energy steel slag concrete and preparation method thereof |
| CN112851156A (en) * | 2021-01-11 | 2021-05-28 | 南京师范大学 | C25-grade alkali-activated silicon-aluminum all-solid waste concrete and preparation method thereof |
| CN112851156B (en) * | 2021-01-11 | 2023-01-20 | 南京师范大学 | C25-grade alkali-activated silicon-aluminum all-solid waste concrete and preparation method thereof |
| CN113200698A (en) * | 2021-05-24 | 2021-08-03 | 河北科技大学 | Preparation method of early strength additive for solid waste based cementing material |
| CN116553852A (en) * | 2023-04-10 | 2023-08-08 | 上海复洁环保科技股份有限公司 | Retarder and reinforcing agent, retarder cement for roads and preparation method of retarder and reinforcing agent |
| CN117447104A (en) * | 2023-11-09 | 2024-01-26 | 四川君和环保股份有限公司 | Cementing material and C60 concrete containing high-titanium blast furnace slag |
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Application publication date: 20170104 |