CN1305573C - Blast furnace cinder powder grinding technology - Google Patents
Blast furnace cinder powder grinding technology Download PDFInfo
- Publication number
- CN1305573C CN1305573C CNB2004100236665A CN200410023666A CN1305573C CN 1305573 C CN1305573 C CN 1305573C CN B2004100236665 A CNB2004100236665 A CN B2004100236665A CN 200410023666 A CN200410023666 A CN 200410023666A CN 1305573 C CN1305573 C CN 1305573C
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- powder
- blast furnace
- furnace slag
- ball mill
- slag
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- Expired - Fee Related
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- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a blast furnace slag milling technique. Blast furnace slag powder is dried, processed and milled in a large-scale ball mill; milled powder material is sorted by a high-efficiency powder-sorting machine and a box dust-removing device; and coarse powder returns to the ball mill and is continuously milled to form a closed-circuit grinding system. Sorted fine powder is the slag micro powder product of which the specific surface area is larger than 450m<2>/kg. Slag micro powder can be used as a high-activity concrete admixture of a construction material system. The blast furnace slag milling technique has the advantages of stable product quality, large product sphericity, simple entire technological operation, reliable operation, low device investment and low maintenance cost; the yield of a single production line of the milling manufacturing technique can reach 18 t/h, the annual output reaches more than 10 tons, and the productivity is increased by 30%; and the specific surface area is more than 450m<2>/kg.
Description
Technical field
The invention belongs to a kind of building materials industry grinding process, relate to a kind of ground granulated blast furnace slag grinding production technology.
Background technology
Slag micropowder is as a kind of novel senior admixture, in the concrete process of preparation, behind the equivalent substitution cement, it can not only improve concrete microstructure, improve intensity, reduce concrete bleeding, improve workability, pumpability, reduce the heat of hydration, prevent internal temperature rise of mass concrete and the crack that causes.And along with the raising of construction engineering quality standard, slag micropowder has become the indispensable independent component of preparation high performance concrete.According to practical experience, the slag micropowder specific area reaches 400m
2During/kg, vivacity reached 98% in 28 days; Arrive 600m when slag powders is levigate
2/ kg and 800m
2During/kg, 28 days vivacities are corresponding to reach 114% and 127% respectively, is higher than the activity of common fineness clinker, and its potential activity has obtained giving full play to.Therefore, the grinding production technology is the main cause that influences the slag micropowder application performance.
At present, the grinding production technology of slag powders can be divided into by the grinding machine form: three kinds of vertical mill, ball milling and oscillating mills; Can be divided into by technological process: circle flows and opens and flow two kinds.The external general vertical mill+powder concentrator composition circle stream that adopts is produced the employing of domestic extremely indivedual enterprises.The main feature of vertical mill production is the single machine yield height, and power consumption is low, but because its investment is bigger, general enterprise is difficult to bear.Domestic general enterprise production technology adopts the oscillating mill production system at present, because the equipment unit yields poorly, is difficult to form big production scale; And conventional ball milling production, equipment manufacturing cost is low, and technology is reliable, technology maturation, stable operation is convenient to quality control, thus use the also more of this technology, but this process efficiency is on the low side, and energy consumption height, production cost are high slightly, and scale is less.
Summary of the invention
The objective of the invention is: a kind of slag milling technology is provided, improves mill efficiency, realize large-scale production, can reduce specific energy consumption, can guarantee the manufacturing technique method of product quality again.
At above-mentioned purpose, technical scheme of the present invention is: after the ground granulated blast furnace slag oven dry is handled, change large-size ball mill over to and carry out fine grinding.The laggard selected powder system of powder discharging after levigate selects powder through high-efficient powder concentrator and box cleaner, and specific area is less than 450m
2The meal of/kg returns the ball mill feeding mouth through conveyer and continues grinding, and the fine powder of selecting enters product powder storehouse, is the slag micropowder product, and its specific area is greater than 450m
2/ kg.Slag micropowder can be used as the high-activity concrete admixture of building materials system.
Above-mentioned grinding process, its characteristics are: large-size ball mill and efficient combined-type powder concentrator are formed circle streaming system, closed circuit production.
Above-mentioned grinding process, its characteristics are: large-size ball mill all adopts steel ball to make abrasive body, adopts all steel ball grinding technology.
Advantage of the present invention is: this grinding production technology wall scroll production line output reaches 18t/h, produces per year to reach 1O more than ten thousand tons, and production capacity improves 30%; The constant product quality of producing, the product sphericity is big, and specific area is at 450m
2More than/the kg; Whole technological operation is simple, and is reliable, and equipment investment is low, and maintenance cost is low.
The specific embodiment
Enter φ 3 * 11m large-size ball mill behind blast-furnace cinder process φ 3 * 20m drying machine drying and carry out fine grinding, large-size ball mill all adopts steel ball to make abrasive body.The laggard selected powder system of powder discharging after levigate selects powder through high-efficient powder concentrator and box cleaner, and specific area is less than 450m
2The meal of/kg returns the ball mill feeding mouth through conveyer and continues grinding, forms closed-circuit grinding system.The fine powder of selecting enters product powder storehouse, is the slag micropowder product, and its specific area is greater than 450m
2/ kg.Slag micropowder can be used as the high-activity concrete admixture of building materials system.
Claims (2)
1, a kind of ground granulated blast furnace slag that will dry after the processing changes large-size ball mill over to and carries out fine grinding, the ground granulated blast furnace slag grinding process of the laggard selected powder system of powder discharging after the fine grinding, it is characterized in that: select powder through high-efficient powder concentrator and box cleaner, specific area is less than 450m
2The meal of/kg returns the ball mill feeding mouth through conveyer and continues grinding, and the fine powder of selecting enters product powder storehouse, is the slag micropowder product, and its specific area is greater than 450m
2/ kg.
2, a kind of ground granulated blast furnace slag grinding process according to claim 1, it is characterized in that: large-size ball mill all adopts steel ball to make abrasive body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100236665A CN1305573C (en) | 2004-02-26 | 2004-02-26 | Blast furnace cinder powder grinding technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100236665A CN1305573C (en) | 2004-02-26 | 2004-02-26 | Blast furnace cinder powder grinding technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1559690A CN1559690A (en) | 2005-01-05 |
| CN1305573C true CN1305573C (en) | 2007-03-21 |
Family
ID=34441112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100236665A Expired - Fee Related CN1305573C (en) | 2004-02-26 | 2004-02-26 | Blast furnace cinder powder grinding technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1305573C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613772B (en) * | 2008-06-27 | 2010-12-29 | 宝山钢铁股份有限公司 | Method for recycling slag from non-blast furnace ironmaking by COREX smelting reduction process |
| CN107572852A (en) * | 2017-11-07 | 2018-01-12 | 广东韶钢嘉羊新型材料有限公司 | A kind of production method of high-performance ground granulated blast furnace slag |
| CN114939469A (en) * | 2022-05-20 | 2022-08-26 | 菏泽市天麒新型建材有限公司 | Preparation method of modified superfine granulated blast furnace slag micro powder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1337374A (en) * | 2000-08-16 | 2002-02-27 | 上海宏基特种陶瓷有限公司 | White ceramic producing method and product by utilizing blast furnace slag |
| CN1349956A (en) * | 2001-09-14 | 2002-05-22 | 中国科学院上海硅酸盐研究所 | Low cost process of synthesizing sialon ceramic powder |
-
2004
- 2004-02-26 CN CNB2004100236665A patent/CN1305573C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1337374A (en) * | 2000-08-16 | 2002-02-27 | 上海宏基特种陶瓷有限公司 | White ceramic producing method and product by utilizing blast furnace slag |
| CN1349956A (en) * | 2001-09-14 | 2002-05-22 | 中国科学院上海硅酸盐研究所 | Low cost process of synthesizing sialon ceramic powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1559690A (en) | 2005-01-05 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 Termination date: 20160226 |