CN104973813A - Mineral slag micro powder and preparation method thereof - Google Patents

Mineral slag micro powder and preparation method thereof Download PDF

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Publication number
CN104973813A
CN104973813A CN201410145093.7A CN201410145093A CN104973813A CN 104973813 A CN104973813 A CN 104973813A CN 201410145093 A CN201410145093 A CN 201410145093A CN 104973813 A CN104973813 A CN 104973813A
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CN
China
Prior art keywords
slag
cement concrete
drying
grinding
feed bin
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Pending
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CN201410145093.7A
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Chinese (zh)
Inventor
虞海舟
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Zhoushan Huibon Building Material Co Ltd
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Zhoushan Huibon Building Material Co Ltd
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Priority to CN201410145093.7A priority Critical patent/CN104973813A/en
Publication of CN104973813A publication Critical patent/CN104973813A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a mineral slag micro powder and a preparation method thereof. The mineral slag micro powder is composed of following raw materials, by weight, 75-85% of blast furnace slag, 5-15% of coal slag and 10% of fly ash. The mineral slag micro powder can greatly improve strength of cement concrete, can be used for preparing ultrahigh-strength cement concrete, can effectively improve the anti-erosion performance of the cement concrete and is especially suitable for anti-corrosion engineering. The mineral slag micro powder can significantly reduce water bleeding and improve workability of the cement concrete, can significantly improve the compactness and the anti-permeability of the cement concrete, can significantly hydration heat of the cement concrete, and is suitable for preparing large-volume concrete. The mineral slag micro powder can effectively inhibit an alkali-aggregate reaction of the cement concrete, can significantly improve the performance of alkali-aggregate reaction resistance of the cement concrete and can improve the durability of the cement concrete.

Description

A kind of slag micropowder and preparation method thereof
Technical field
The present invention relates to technical field of buildings, particularly relate to a kind of slag micropowder and preparation method thereof.
Background technology
Concrete is material of construction important in construction work.At present, the cement concrete consumption of engineering is large, easily and property poor, early strong poor performance, easily occur hydration heat phenomenon, make cement concrete strength not high enough, corrosion resistance is poor, and Qinshui is measured greatly, and compactness is strong not.In order to reduce concrete production cost, in concrete, increase multiple filler, and slag micropowder is a kind of new filler.
Summary of the invention
The object of the invention is to overcome existing defect, a kind of concrete dry mortar and preparation method thereof is provided, concrete cement consumption can be reduced, increase economic efficiency, improve concrete strength.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
A kind of slag micropowder, is made up of the raw material of following weight percent:
Blast-furnace slag 75%-85%;
Cinder 5%-15%;
Flyash 10%.
A preparation method for slag micropowder, comprises the following steps:
(1) blast-furnace slag is transported to drying system and carries out drying and processing with the speed of 30 tons/hour, after the moisture in blast-furnace slag is dried, send into feed bin;
(2) carry out pre-grinding by the dry slag feeding roll squeezer in feed bin, extruding becomes material cake and discharges from roll squeezer;
(3) break up in the material cake of discharging under roll squeezer feeding grading machine, the dry slag fine powder then particle diameter being less than 2mm is separated with the dry slag coarse meal that particle diameter is greater than 2mm;
(4) dry slag coarse meal particle diameter being greater than 2mm sends feed bin back to, repeating step (2);
(5) homogenizing and deposit are carried out in dry slag fine powder feeding bistrique storehouse particle diameter being less than 2mm;
(6) grinding is carried out, after grinding by the dry slag fine powder feeding grinding machine in bistrique storehouse; If the dustiness after grinding is higher than 0.5%, sends into dust-precipitator dedusting, discharged by exhaust blower.
(7) cinder is transported to drying system and carries out drying and processing with the speed of 30 tons/hour, after the moisture in cinder is dried, send into feed bin, repeating step (2), (3), (4), (5), (6);
(8) ash transfer is carried out drying and processing to drying system with the speed of 30 tons/hour, after the moisture in flyash is dried, sends into feed bin, repeating step (2), (3), (4), (5), (6);
(9) material that step (6), (7), (8) prepare is mixed successively according to above-mentioned weight percent, after mixing, namely obtain slag micropowder.
Further, grading machine can be scattering grader, also can be U-shaped grading machine.
Further, grinding machine is high thin high-yield tube grinder.
The slag micropowder that the present invention obtains can increase substantially the intensity of cement concrete, can make Ultrastrength cement concrete; Effectively can improve the anti-etch performance of cement concrete, be specially adapted to anticorrosion engineering; Significantly can reduce the bleeding quantity of cement concrete, improve concrete workability; The compactness of cement concrete can be significantly improved, improve the impermeability of cement concrete; Significantly can reduce the hydration heat of cement concrete, be applicable to configure mass concrete; Effectively can suppress the alkali-aggregate reaction of cement concrete, significantly improve the alkali resistant aggregate reaction performance of cement concrete, improve the weather resistance of cement concrete.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment 1:
Each components based on weight percentage of slag micropowder is: blast-furnace slag 75%, cinder 15%, flyash 10%.
The preparation method of slag micropowder, comprises the following steps:
(1) blast-furnace slag is transported to drying system and carries out drying and processing with the speed of 30 tons/hour, after the moisture in blast-furnace slag is dried, send into feed bin;
(2) carry out pre-grinding by the dry slag feeding roll squeezer in feed bin, extruding becomes material cake and discharges from roll squeezer;
(3) break up in the material cake of discharging under roll squeezer feeding scattering grader, the dry slag fine powder then particle diameter being less than 2mm is separated with the dry slag coarse meal that particle diameter is greater than 2mm;
(4) dry slag coarse meal particle diameter being greater than 2mm sends feed bin back to, repeating step (2);
(5) homogenizing and deposit are carried out in dry slag fine powder feeding bistrique storehouse particle diameter being less than 2mm;
(6) grinding is carried out, after grinding by the high thin high-yield tube grinder of dry slag fine powder feeding in bistrique storehouse; If the dustiness after grinding is higher than 0.5%, sends into dust-precipitator dedusting, discharged by exhaust blower.
(7) cinder is transported to drying system and carries out drying and processing with the speed of 30 tons/hour, after the moisture in cinder is dried, send into feed bin, repeating step (2), (3), (4), (5), (6);
(8) ash transfer is carried out drying and processing to drying system with the speed of 30 tons/hour, after the moisture in flyash is dried, sends into feed bin, repeating step (2), (3), (4), (5), (6);
(9) material that step (6), (7), (8) prepare is mixed successively according to above-mentioned weight percent, after mixing, namely obtain slag micropowder.
Embodiment 2:
Each components based on weight percentage of slag micropowder is: blast-furnace slag 80%, cinder 10%, flyash 10%.By upper component proportionally feeding, preparation method is with embodiment 1.
Embodiment 3:
Each components based on weight percentage of slag micropowder is: blast-furnace slag 85%, cinder 5%, flyash 10%.By upper component proportionally feeding, preparation method is with embodiment 1.
Finally, it should be noted that above what enumerate is only 3 kinds of specific embodiments of the present invention.Obviously, the present invention is not limited to above embodiment, can also have a lot of distortion.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Blast-furnace slag in the present invention adds cinder after long-time grinding, flyash mixes, and so not only makes the activity of slag be not fully exerted, and strength of cement grade improves, use properties improves; And the addition content of slag can reach more than 60%, concrete is had to the guarantee of intensity, not only reduces production cost, and add economic benefit.The intensity of cement concrete can also be increased substantially, Ultrastrength cement concrete can be made; Effectively can improve the anti-etch performance of cement concrete, be specially adapted to anticorrosion engineering; Significantly can reduce the bleeding quantity of cement concrete, improve concrete workability; The compactness of cement concrete can be significantly improved, improve the impermeability of cement concrete; Significantly can reduce the hydration heat of cement concrete, be applicable to configure mass concrete; Effectively can suppress the alkali-aggregate reaction of cement concrete, significantly improve the alkali resistant aggregate reaction performance of cement concrete, improve the weather resistance of cement concrete.

Claims (4)

1. a slag micropowder, is characterized in that: be made up of the raw material of following weight percent:
Blast-furnace slag 75%-85%;
Cinder 5%-15%;
Flyash 10%.
2. the preparation method of a kind of slag micropowder according to claim 1, is characterized in that: comprise the following steps:
(1) blast-furnace slag is transported to drying system and carries out drying and processing with the speed of 30 tons/hour, after the moisture in blast-furnace slag is dried, send into feed bin;
(2) carry out pre-grinding by the dry slag feeding roll squeezer in feed bin, extruding becomes material cake and discharges from roll squeezer;
(3) break up in the material cake of discharging under roll squeezer feeding grading machine, the dry slag fine powder then particle diameter being less than 2mm is separated with the dry slag coarse meal that particle diameter is greater than 2mm;
(4) dry slag coarse meal particle diameter being greater than 2mm sends feed bin back to, repeating step (2);
(5) homogenizing and deposit are carried out in dry slag fine powder feeding bistrique storehouse particle diameter being less than 2mm;
(6) grinding is carried out, after grinding by the dry slag fine powder feeding grinding machine in bistrique storehouse; If the dustiness after grinding is higher than 0.5%, sends into dust-precipitator dedusting, discharged by exhaust blower.
(7) cinder is transported to drying system and carries out drying and processing with the speed of 30 tons/hour, after the moisture in cinder is dried, send into feed bin, repeating step (2), (3), (4), (5), (6);
(8) ash transfer is carried out drying and processing to drying system with the speed of 30 tons/hour, after the moisture in flyash is dried, sends into feed bin, repeating step (2), (3), (4), (5), (6);
(9) material that step (6), (7), (8) prepare is mixed successively according to above-mentioned weight percent, after mixing, namely obtain slag micropowder.
3. the preparation method of a kind of slag micropowder according to claim 2, is characterized in that: the grading machine in described step (3) can be scattering grader, also can be U-shaped grading machine.
4. the preparation method of a kind of slag micropowder according to claim 2, is characterized in that: the grinding machine in described step (6) is high thin high-yield tube grinder.
CN201410145093.7A 2014-04-11 2014-04-11 Mineral slag micro powder and preparation method thereof Pending CN104973813A (en)

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Application Number Priority Date Filing Date Title
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CN104973813A true CN104973813A (en) 2015-10-14

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107500587A (en) * 2017-09-05 2017-12-22 和县浙徽新型材料有限公司 Slag powder material handling process in a kind of concrete
CN108503245A (en) * 2018-02-12 2018-09-07 铜陵安固新型材料有限公司 A kind of slag micropowder and its manufacturing method
CN108892403A (en) * 2018-07-19 2018-11-27 寻甸永斌工业废渣开发利用有限公司 A kind of ground granulated blast furnace slag and preparation method thereof using solid slag preparation
CN110128041A (en) * 2019-05-21 2019-08-16 四川富敏建材有限公司 A kind of efficient mountain flour produces the process of flyash
CN111205001A (en) * 2020-01-18 2020-05-29 湖州高强新材料有限公司 Production process of slag micro powder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002028794A2 (en) * 2000-10-05 2002-04-11 Ko Suz Chung Slag cement
CN101045619A (en) * 2007-04-24 2007-10-03 华南理工大学 Blast-furnace slag powder and blast-furnace slag and coal cinder compound powder excitant
CN101664707A (en) * 2008-09-02 2010-03-10 浙江明峰水泥有限公司 Slag micropowder superfine open-circuit production line
CN102557493A (en) * 2011-11-21 2012-07-11 武汉市天沭科技发展有限公司 High-efficiency and energy-saving preparation method of slag micro-powder
CN102887660A (en) * 2012-11-14 2013-01-23 遵义县华磊节能科技有限公司 Slag micro powder machining process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002028794A2 (en) * 2000-10-05 2002-04-11 Ko Suz Chung Slag cement
CN101045619A (en) * 2007-04-24 2007-10-03 华南理工大学 Blast-furnace slag powder and blast-furnace slag and coal cinder compound powder excitant
CN101664707A (en) * 2008-09-02 2010-03-10 浙江明峰水泥有限公司 Slag micropowder superfine open-circuit production line
CN102557493A (en) * 2011-11-21 2012-07-11 武汉市天沭科技发展有限公司 High-efficiency and energy-saving preparation method of slag micro-powder
CN102887660A (en) * 2012-11-14 2013-01-23 遵义县华磊节能科技有限公司 Slag micro powder machining process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107500587A (en) * 2017-09-05 2017-12-22 和县浙徽新型材料有限公司 Slag powder material handling process in a kind of concrete
CN108503245A (en) * 2018-02-12 2018-09-07 铜陵安固新型材料有限公司 A kind of slag micropowder and its manufacturing method
CN108892403A (en) * 2018-07-19 2018-11-27 寻甸永斌工业废渣开发利用有限公司 A kind of ground granulated blast furnace slag and preparation method thereof using solid slag preparation
CN110128041A (en) * 2019-05-21 2019-08-16 四川富敏建材有限公司 A kind of efficient mountain flour produces the process of flyash
CN111205001A (en) * 2020-01-18 2020-05-29 湖州高强新材料有限公司 Production process of slag micro powder

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Application publication date: 20151014

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