CN103539367A - Method for improving activity of steel slag - Google Patents
Method for improving activity of steel slag Download PDFInfo
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- CN103539367A CN103539367A CN201310457449.6A CN201310457449A CN103539367A CN 103539367 A CN103539367 A CN 103539367A CN 201310457449 A CN201310457449 A CN 201310457449A CN 103539367 A CN103539367 A CN 103539367A
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Abstract
The invention discloses a method for improving activity of steel slag. The method comprises the following steps: adding a certain proportion of fly ash into steel slag powder, grinding for a certain period of time, measuring the micro powder fineness of the steel slag according to a water sieve method in a GB/T1345_2005 cement fineness detection method, wherein the sieve used in the method is a 180-mesh sieve. According to the method disclosed by the invention, relative to the steel slag without fly ash, the mass percentage of residues on a steel slag micro powder sieve is reduced, the grinding efficiency is improved, and the fineness is improved, so that the activity of the steel slag micro powder is improved.
Description
Technical field
The present invention relates to a kind of method that improves slag activity.
Background technology
Slag, by grinding, becomes slag micro powder, as high grade cement Additive, concrete-agitating material, is used for building operation.Slag micro powder is its activity as one of important technology index of cement, concrete admixture, and activity index increases with slag fineness.Therefore, how can improve the fineness of slag micro powder after steel slag grinding is the key of problem.
Summary of the invention
In order to overcome above-mentioned deficiency, the invention provides a kind of method that improves slag activity, in slag, add flyash, in grinding slag with addition of a certain proportion of flyash, after grinding certain hour, according to the water sieve method in GB/T 1345-2005 cement fineness methods of inspection, measure slag micro powder fineness.
The technical solution used in the present invention is:
The invention provides a kind of method that improves slag activity, in grinding slag with addition of a certain proportion of flyash, after grinding certain hour, according to the water sieve method in GB/T 1345-2005 cement fineness methods of inspection, measure slag micro powder fineness, sieve used is 180 mesh sieves, and the mass percent of slag micro powder material retained on sieve reduces (for the slag of adding coal ash not), has improved mill efficiency, fineness is improved, thereby the activity of slag micro powder is increased.
Method provided by the invention, is characterized in that: mainly comprise following step successively:
(1) in slag with addition of flyash, grinding together, the addition of flyash is 5 ~ 20% of slag total amount;
(2) grinding, after 1 ~ 2 hour, is measured slag micro powder fineness;
(3) according to the water sieve method in GB/T 1345-2005 cement fineness methods of inspection, measure slag micro powder fineness, sieve used is 180 mesh sieve;
The mass percent of the sub-material retained on sieve of (4) 180 mesh sieve is less than 5%, obtains the slag micro powder that fineness is less than 5%, and the activity of slag micro powder is brought up to more than 57.8%.
Further, described slag is carbon steel slag, and the amount of adding flyash is 10 ~ 20% of slag total amount; Carbon steel slag micro mist activity is by 54%(adding coal ash not) be increased to more than 62.4%.
Further, described slag is stainless steel slag, and the amount of adding flyash is 5 ~ 20% of slag total amount; Stainless steel slag micro mist activity is by 52%(adding coal ash not) be increased to more than 57.8%.
If adding coal ash not, only with carbon steel slag or stainless steel slag grinding, grinding 1 ~ 2 hour, the mass percent of the sub-material retained on sieve of 180 mesh sieve is greater than 5%, obtains the slag micro powder that fineness is greater than 5%.Therefore, in carbon steel slag with addition of 10 ~ 20% flyash or in stainless steel slag with addition of 5 ~ 20% flyash, grinding, is conducive to improve slag fineness together.
The method of raising slag activity provided by the invention, the beneficial effect bringing: for the slag of adding coal ash not, the mass percent of slag micro powder material retained on sieve reduces, and has improved mill efficiency, fineness is improved, thereby the activity of slag is improved.
Below in conjunction with embodiment, describe the specific embodiment of the present invention in detail, but this embodiment is not limited to following embodiment.
Embodiment
embodiment 1:
Take carbon steel slag as example, make four groups of slag samples that flyash addition is different, provide one group of slag sample that does not add flyash as infrastest simultaneously, concrete operations are as follows:
(1) in carbon steel slag with addition of 0%, 5%, 10%, 15%, 20% flyash, get five groups of samples, in 10 kilograms of carbon steel slag respectively with addition of 0 kilogram, 0.5 kilogram, 1 kilogram, 1.5 kilograms, 2 kilograms flyash, grinding together in ball mill;
(2) grinding is 1 hour;
(3) then measure slag micro powder fineness, according to the water sieve method in GB/T 1345-2005 cement fineness methods of inspection, measure slag micro powder fineness, sieve used is 180 mesh sieve, and the mass percent of slag micro powder material retained on sieve reduces, in Table 1.Screenings is not 8.9% during adding coal ash, during admixture 5% (0.5 kilogram) flyash, screenings is 5.2%, during admixture 10% (1 kilogram) flyash, screenings is 4.3%, during admixture 15% (1.5 kilograms) flyash, screenings is 2.8%, and during admixture 20% (2 kilograms) flyash, screenings is 2.2%.Screenings gradually reduces, and for the slag of adding coal ash not, fineness is improved, and improves constantly with the increase of addition, thereby makes its active raising.
Table 1
embodiment 2:
Take stainless steel slag as example, make four groups of slag samples that flyash addition is different, provide one group of slag sample that does not add flyash as infrastest simultaneously, concrete operations are as follows:
(1) in stainless steel slag with addition of 0%, 5%, 10%, 15%, 20% flyash, in 10 kilograms of stainless steel slags respectively with addition of 0 kilogram, 0.5 kilogram, 1 kilogram, 1.5 kilograms, 2 kilograms flyash, grinding together in ball mill;
(2) grinding is 1 hour;
(3) then measure slag micro powder fineness, according to the water sieve method in GB/T 1345-2005 cement fineness methods of inspection, measure slag micro powder fineness, sieve used is 180 mesh sieve, and the mass percent of slag micro powder material retained on sieve reduces, in Table 2.Screenings is not 7.4% during adding coal ash, admixture 5%(0.5 kilogram) screenings is 4.3% during flyash, admixture 10%(1 kilogram) screenings is 2.8% during flyash, admixture 15%(1.5 kilogram) screenings is 1.8% during flyash, admixture 20%(2 kilogram) screenings is 0.6% during flyash.Screenings gradually reduces, and for the slag of adding coal ash not, fineness is improved, and improves constantly with the increase of addition, thereby makes its active raising.
Table 2
Claims (3)
1. a method that improves slag activity, is characterized in that: mainly comprise following step successively:
(1) in slag with addition of flyash, grinding together, the addition of flyash is 5 ~ 20% of slag total amount;
(2) grinding, after 1 ~ 2 hour, is measured slag micro powder fineness;
(3) according to the water sieve method in GB/T 1345-2005 cement fineness methods of inspection, measure slag micro powder fineness, sieve used is 180 mesh sieve;
The mass percent of the sub-material retained on sieve of (4) 180 mesh sieve is less than 5%, obtains the slag micro powder that fineness is less than 5%, and the activity of slag micro powder is brought up to more than 57.8%.
2. the method for raising slag activity according to claim 1, is characterized in that: described slag is carbon steel slag, and the amount of adding flyash is 10 ~ 20% of slag total amount; Carbon steel slag micro mist activity is increased to more than 62.4%.
3. the method for raising slag activity according to claim 1, is characterized in that: described slag is stainless steel slag, and the amount of adding flyash is 5 ~ 20% of slag total amount; Stainless steel slag micro mist activity is increased to more than 57.8%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310457449.6A CN103539367A (en) | 2013-09-30 | 2013-09-30 | Method for improving activity of steel slag |
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| CN201310457449.6A CN103539367A (en) | 2013-09-30 | 2013-09-30 | Method for improving activity of steel slag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017171808A1 (en) * | 2016-03-31 | 2017-10-05 | Halliburton Energy Services, Inc | Co-grinding slag with other material for hydraulic binders |
| CN110643074A (en) * | 2019-11-04 | 2020-01-03 | 安徽工业大学 | Reinforcing, flame-retardant and wear-resistant all-industrial solid waste type composite rubber filler and preparation method thereof |
| CN114890690A (en) * | 2022-06-13 | 2022-08-12 | 山西太钢不锈钢股份有限公司 | Method for improving stainless steel slag performance |
Citations (3)
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| CN1238312A (en) * | 1998-06-08 | 1999-12-15 | 曹龙 | High-efficiency cement |
| CN1401607A (en) * | 2002-07-25 | 2003-03-12 | 中国建筑材料科学研究院 | Composite low-heat-release high-active superfine powder concrete admixture and making method thereof |
| CN101628791A (en) * | 2009-06-25 | 2010-01-20 | 深圳航天科技创新研究院 | Geopolymer gel material for rush repairs and rush constructions |
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2013
- 2013-09-30 CN CN201310457449.6A patent/CN103539367A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1238312A (en) * | 1998-06-08 | 1999-12-15 | 曹龙 | High-efficiency cement |
| CN1401607A (en) * | 2002-07-25 | 2003-03-12 | 中国建筑材料科学研究院 | Composite low-heat-release high-active superfine powder concrete admixture and making method thereof |
| CN101628791A (en) * | 2009-06-25 | 2010-01-20 | 深圳航天科技创新研究院 | Geopolymer gel material for rush repairs and rush constructions |
Non-Patent Citations (1)
| Title |
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| 史永林; 仪桂兰: "物理活化方法对钢渣、矿渣及粉煤灰活性的影响", 《中国资源综合利用》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017171808A1 (en) * | 2016-03-31 | 2017-10-05 | Halliburton Energy Services, Inc | Co-grinding slag with other material for hydraulic binders |
| GB2561116A (en) * | 2016-03-31 | 2018-10-03 | Halliburton Energy Services Inc | Co-grinding slag with other material for hydraulic binders |
| US10703958B2 (en) | 2016-03-31 | 2020-07-07 | Halliburton Energy Services, Inc. | Co-grinding slag with other material for hydraulic binders |
| US10975285B2 (en) | 2016-03-31 | 2021-04-13 | Halliburton Energy Services, Inc. | Co-grinding slag with other material for hydraulic binders |
| GB2561116B (en) * | 2016-03-31 | 2021-11-03 | Halliburton Energy Services Inc | Co-grinding slag with other material for hydraulic binders |
| CN110643074A (en) * | 2019-11-04 | 2020-01-03 | 安徽工业大学 | Reinforcing, flame-retardant and wear-resistant all-industrial solid waste type composite rubber filler and preparation method thereof |
| CN114890690A (en) * | 2022-06-13 | 2022-08-12 | 山西太钢不锈钢股份有限公司 | Method for improving stainless steel slag performance |
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Application publication date: 20140129 |