CN105855014A - Steel slag superfine powder production process - Google Patents
Steel slag superfine powder production process Download PDFInfo
- Publication number
- CN105855014A CN105855014A CN201610183832.0A CN201610183832A CN105855014A CN 105855014 A CN105855014 A CN 105855014A CN 201610183832 A CN201610183832 A CN 201610183832A CN 105855014 A CN105855014 A CN 105855014A
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- CN
- China
- Prior art keywords
- steel slag
- fine powder
- steam
- tailings
- superfine powder
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a steel slag superfine powder production process and belongs to the technical field of resource comprehensive utilization and environment protection. The steel slag superfine powder production process comprises the steps that a coarse grinding device is used for conducting coarse crushing on steel slag tailings; the steel slag tailings subjected to coarse crushing are sorted by a screening magnetic separation device and then are divided into tailing fine powder and magnetic iron; the tailing fine powder enters a steam crushing device and is impacted and crushed by overheated high energy steam; the mixture of the steel slag superfine powder formed after impacting and crushing by the high energy steam and the overheated steam enters a superfine powder sorting device; the steel slag superfine powder is discharged out of the superfine powder sorting device and enters a steel slag superfine powder bin; and the overheated steam is discharged out of the top of the superfine powder sorting device and collected by a steam collection device. The steel slag superfine powder production process has the advantages that ferric oxide in the tailings is extracted to the greatest extent, the produced steel slag superfine powder not only can be used as concrete additives, but also can be used as rubber and plastic filling and coating filling, and the price of the powder is up to more than one thousand yuan per ton.
Description
Technical field
The invention belongs to comprehensive utilization of resources and environmental protection technical field, in particular, provide a kind of slag and surpass
Fine powder production technique.
Background technology
Steel slag tailings, as steel-making solid waste, owing to it is difficult, is presently mainly thrown aside.Minority steel
Factory can reclaim small amounts ferrum after fine grinding, and using fine grinding powder as concrete admixture, adopts in this way
Fine grinding powder after process is big as concrete admixture not only granularity, specific surface area is little, and ferrum oxide separates
Extraction degree is low, has the material silicon of cement cementitious activity, calcium, aluminum, magnesium type oxide in ferrum oxide and tailings
Mixed in together, the gelation activity of fine grinding powder can be had a strong impact on, if mixed as cement by these fine grinding powders
Close material to use, also result in cement later stage volumetric expansion (free calcium oxide causes volumetric expansion), and fill
The adverse consequencess such as weak effect (grain graininess is uneven).In order to improve the utilizing status of fine grinding powder further,
Generally require and repeatedly grind screening, thus be greatly increased production cost.
Summary of the invention
It is an object of the invention to provide a kind of steel slag super fine powder production technology, use the side that high energy steam is pulverized
Steel slag tailings is broken into the micropowder of below 1000 mesh by method, thus farthest extracts the oxidation in tailings
Ferrum, the steel slag super fine powder of production acts not only as concrete admixture, it is also possible to as rubber filling and coating
Filler, powder per ton reaches as high as more than thousand yuan.
The step that the present invention produces steel slag super fine powder is as follows:
(1) steel slag tailings corase grind: use corase grind device that steel slag tailings is carried out coarse crushing, the steel after coarse crushing
Slag tailings is divided into tailings fine powder and Armco magnetic iron after screening magnetic separation；
(2) steam is pulverized: tailings fine powder enters in steam reducing mechanism, uses overheated high energy steam to tail
Slag fine powder carries out impact grinding；
(3) micropowder sorting: the slag after high energy steam impact grinding is divided into two, and a part is steel
Slag micropowder and the mixture of superheated steam, another part is bulky grain slag.Micropowder sorting unit is by slag
Micropowder separates with the mixture of superheated steam, and steel slag super fine powder is discharged into steel bottom micropowder sorting unit
In the ultra-fine powder cabin of slag, superheated steam is then discharged from micropowder sorting unit top and is collected by vapor collecting apparatus.
The raw material producing micropowder is steel slag tailings.
The invention have the advantages that
Owing to production technology have employed corase grind and the method for steam pulverizing, steel slag tailings can be crushed to
Below 1000 mesh, steel slag tailings then can only be milled down to about 400 mesh by traditional steel slag tailings fine grinding technology,
Solve a difficult problem for steel slag tailings super-refinement；
Steam reducing mechanism impact grinding tailings fine powder uses the steam of waste heat recovery, has saved and has produced into
This；
Steam reducing mechanism can realize the high efficiency separation of Armco magnetic iron and steel slag super fine powder, can be effectively improved steel
The gelation activity of slag micropowder, improves the added value of steel slag super fine powder.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the present invention.Wherein, corase grind device 1, screening concentration equipment 2, steaming
Vapour reducing mechanism 3, micropowder sorting unit 4, vapor collecting apparatus 5, steel slag super fine powder storehouse 6.
Detailed description of the invention
1) < 10mm steel slag tailings is crushed to below 0.1mm, roughly grinds device by granularity to use corase grind device 1
1 both can use ball mill can also use vertical mill.
2) steel slag tailings is after corase grind device 1 is broken, enters screening concentration equipment 2 and carries out sieving and magnetic separation,
It is divided into tailings fine powder and Armco magnetic iron, screening concentration equipment 2 can use refiner after screening magnetic separation.
3), in tailings fine powder enters steam reducing mechanism 3, use overheated high energy steam that tailings fine powder is carried out
Impact grinding, steam pressure is 0.1～0.4MPa, and vapor (steam) temperature is 230～260 DEG C, steel slag super fine powder and steam
Mixture be discharged into micropowder sorting unit 4 from the top of steam reducing mechanism 3, bulky grain slag then from
Discharge bottom steam reducing mechanism 3.
4) steel slag super fine powder is separated by micropowder sorting unit 4 with the mixture of steam, and steel slag super fine powder is from super
Being discharged into steel slag super fine powder storehouse 6 bottom fine powder sorting unit 4, steam is then from micropowder sorting unit 4 top
Discharge and collected by vapor collecting apparatus 5.
Embodiment described above is only to be described the preferred embodiment of the present invention, not to the present invention
Scope be defined, on the premise of designing spirit without departing from the present invention, this area ordinary skill technical staff
The various deformation making technical scheme and improvement, all should fall into claims of the present invention and determine
Protection domain in.
Claims (2)
1. a steel slag super fine powder production technology, it is characterised in that technological process is as follows:
(1) steel slag tailings corase grind: use corase grind device (1) that steel slag tailings is carried out coarse crushing,
Steel slag tailings after coarse crushing is divided into tailings fine powder and Armco magnetic iron after screening magnetic separation；
(2) steam is pulverized: tailings fine powder enters in steam reducing mechanism (3), and it is overheated to use
High energy steam carries out impact grinding to tailings fine powder；
(3) micropowder sorting: the slag after high energy steam impact grinding is divided into two,
Being divided into the mixture of steel slag super fine powder and superheated steam, another part is bulky grain slag；Micropowder
Steel slag super fine powder is separated by sorting unit (4) with the mixture of superheated steam, and steel slag super fine powder is from super
In fine powder sorting unit (4) bottom is discharged into steel slag super fine powder storehouse (6), superheated steam then from
Micropowder sorting unit top is discharged and is collected by vapor collecting apparatus (5).
Steel slag super fine powder production technology the most according to claim 1, it is characterised in that: produce
The raw material of micropowder is steel slag tailings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610183832.0A CN105855014A (en) | 2016-03-28 | 2016-03-28 | Steel slag superfine powder production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610183832.0A CN105855014A (en) | 2016-03-28 | 2016-03-28 | Steel slag superfine powder production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105855014A true CN105855014A (en) | 2016-08-17 |
Family
ID=56626162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610183832.0A Pending CN105855014A (en) | 2016-03-28 | 2016-03-28 | Steel slag superfine powder production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105855014A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694517A (en) * | 2016-12-25 | 2017-05-24 | 北京首钢国际工程技术有限公司 | Production process for preparing steel slag micropowder through steel slag magnetic separation powder purification synergistically |
| CN108298835A (en) * | 2018-02-23 | 2018-07-20 | 四川省达州钢铁集团有限责任公司 | A method of producing slag micropowder with blast furnace granulated slag |
| CN109020337A (en) * | 2018-09-13 | 2018-12-18 | 北京浩德互动科技有限公司 | A kind of modified ground granulated blast furnace slag and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1170340A (en) * | 1997-07-03 | 1999-03-16 | Hosokawa Alpine Ag | Method and apparatus for fluidized layer/jet grinding |
| CN101716547A (en) * | 2008-10-10 | 2010-06-02 | 卢忠远 | Method for preparing ultra-fine powder by waste heat of plant |
| CN103386354A (en) * | 2013-07-22 | 2013-11-13 | 南通万豪建材科技有限公司 | Production method of superfine slag powder |
| CN104307614A (en) * | 2014-06-13 | 2015-01-28 | 江苏融达新材料股份有限公司 | A method of grinding steel slag powder and mine slag powder and producing steel and iron slag powder by a vertical grinding mill |
-
2016
- 2016-03-28 CN CN201610183832.0A patent/CN105855014A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1170340A (en) * | 1997-07-03 | 1999-03-16 | Hosokawa Alpine Ag | Method and apparatus for fluidized layer/jet grinding |
| CN101716547A (en) * | 2008-10-10 | 2010-06-02 | 卢忠远 | Method for preparing ultra-fine powder by waste heat of plant |
| CN103386354A (en) * | 2013-07-22 | 2013-11-13 | 南通万豪建材科技有限公司 | Production method of superfine slag powder |
| CN104307614A (en) * | 2014-06-13 | 2015-01-28 | 江苏融达新材料股份有限公司 | A method of grinding steel slag powder and mine slag powder and producing steel and iron slag powder by a vertical grinding mill |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106694517A (en) * | 2016-12-25 | 2017-05-24 | 北京首钢国际工程技术有限公司 | Production process for preparing steel slag micropowder through steel slag magnetic separation powder purification synergistically |
| CN106694517B (en) * | 2016-12-25 | 2019-01-15 | 北京首钢国际工程技术有限公司 | A kind of steel scoria magnetic separation powder purification coordinate system for slag micro powder production technology |
| CN108298835A (en) * | 2018-02-23 | 2018-07-20 | 四川省达州钢铁集团有限责任公司 | A method of producing slag micropowder with blast furnace granulated slag |
| CN109020337A (en) * | 2018-09-13 | 2018-12-18 | 北京浩德互动科技有限公司 | A kind of modified ground granulated blast furnace slag and preparation method thereof |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160817 |
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| WD01 | Invention patent application deemed withdrawn after publication |