CN1557560A - Method for preparing steel slag water washing sand used as a substitute for yellow sand - Google Patents
Method for preparing steel slag water washing sand used as a substitute for yellow sand Download PDFInfo
- Publication number
- CN1557560A CN1557560A CNA2004100161495A CN200410016149A CN1557560A CN 1557560 A CN1557560 A CN 1557560A CN A2004100161495 A CNA2004100161495 A CN A2004100161495A CN 200410016149 A CN200410016149 A CN 200410016149A CN 1557560 A CN1557560 A CN 1557560A
- Authority
- CN
- China
- Prior art keywords
- sand
- magnetic separation
- slag
- steel slag
- washed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002893 slag Substances 0.000 title claims abstract description 48
- 239000004576 sand Substances 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 13
- 239000010959 steel Substances 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 10
- 238000005406 washing Methods 0.000 title claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052742 iron Inorganic materials 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000292 calcium oxide Substances 0.000 claims abstract description 6
- 238000007885 magnetic separation Methods 0.000 claims description 28
- 206010016256 fatigue Diseases 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 13
- 238000013467 fragmentation Methods 0.000 claims description 7
- 238000006062 fragmentation reaction Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 5
- 239000006148 magnetic separator Substances 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 241000876852 Scorias Species 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000008188 pellet Substances 0.000 description 8
- 230000008901 benefit Effects 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
- C04B18/142—Steelmaking slags, converter slags
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to the processing and application of steel slag resource, and is especially the preparation process of water washed steel slag sand for replacing yellow sand in building. Steel slag is magnetically selected repeatedly, crushed to size not larger than 5 mm, sorted, water washed and magnetically re-selected to form the water washed steel slag sand. The water washed steel slag sand has iron content less than 1 %, mud content less than 5 % and free calcium oxide content less than 4 %. Detection shows that the water washed steel slag sand has stable performance, no radioactivity and low content of metal iron, free calcium oxide and other harmful components, and may be used as fine aggregate for concrete in building.
Description
Technical field
The invention belongs to the processing and the application of steel slag resource, relate to a kind of preparation method of yellow ground substitute for building, specifically, is a kind of preparation method who is used for the slag washed-out sand of alternative yellow ground.
Background technology
Along with the continuous quickening of process of industrialization, it is more and more rare that resource becomes, along with country to the continuing to increase of rivers protection, yellow ground for building is faced with the problem that exploitation is restricted, and presses for and finds inexpensive substitute as early as possible.
Slag exists the problem of high value added utilization as the byproduct of steel-making always.General slag is after processing through common sorting, magnetic separation, specification according to screen cloth, can form the different slag pellet of fineness, but because it belongs to the byproduct of production magnetic separation iron usually, therefore, by the end of at present, the slag pellet after the sorting still there is not the requirement of performance index, do further deep processing also not to its in addition development and utilization targetedly, and to producing remaining slag pellet.
Summary of the invention
For overcoming the deficiency that steel slag resource is utilized in the prior art, the invention provides a kind of preparation method who is used for the slag washed-out sand of alternative yellow ground, with the resource of expansion yellow ground substitute, and then the utilization rate of raising steel slag resource.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of preparation method who is used for substituting the slag washed-out sand of yellow ground, its substantive distinguishing features is: it is slag to be carried out magnetic separation, fragmentation, sorting to its particle diameter repeatedly be less than or equal to 5mm, and then carry out sorting, the washing magnetic separation forms;
The concrete operations step is:
(1) the slag raw material is carried out sufficient fragmentation, sorting, magnetic separation, and following steel scoria magnetic separation material and the branch of concentrated particle diameter＜5mm selected materials;
(2) will after last process is handled, receive＜the magnetic separation material of 5mm, divide that selecting materials evenly distributes imports in the washing magnetic separator, fully wash, magnetic separation, when reclaiming the magnetic separation iron sand, will be filtered out by the mortar that water is gone out, again with sand washer receive washed-out sand.
The described slag washed-out sand that is used for substituting yellow ground, its iron-holder is less than or equal to 1%, contains mud amount less than 5%, and free calcium oxide is less than 4%.
Compared with prior art, the present invention has the following advantages:
1, slag is after having experienced multiple working procedure processing, again through washing magnetic separation and sorting, therefore, the content of harmful components such as metallic iron that it is inner and free calcium oxide all meets the specification requirement that substitutes common yellow ground use, and the fine aggregate that just can directly be used as building concrete need not be screened once more to it in the construction site.
2, after testing, the inner "dead" material of slag washed-out sand of the present invention, stable performance.Its surperficial slag micro powder has lateral reactivity, also can improve concrete performance.
3, the slag washed-out sand that slag processing back is formed is as yellow ground for building, and its economic benefit, environmental benefit are all very remarkable, have also opened up the new approach that utilizes for the slag with lateral reactivity.
Description of drawings
Fig. 1 is used for the process flow diagram of the slag washed-out sand of alternative yellow ground for preparation.
The specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
A kind of preparation method who is used for substituting the slag washed-out sand of yellow ground, it is slag to be carried out magnetic separation, fragmentation, sorting to its particle diameter repeatedly be less than or equal to 5mm, and then carry out sorting, the washing magnetic separation forms.
Its concrete operations step is:
(1) the slag raw material is carried out sufficient fragmentation, sorting, magnetic separation, and following steel scoria magnetic separation material and the branch of concentrated particle diameter＜5mm selected materials;
(2) the magnetic separation material of the particle diameter＜5mm that will receive after last process is handled, branch being selected materials evenly to distribute and importing in the washing magnetic separator, fully wash, magnetic separation, when reclaiming the magnetic separation iron sand, will be filtered out by the mortar that water is gone out, again with sand washer receive washed-out sand.
The described slag washed-out sand that is used for substituting yellow ground, its iron-holder is less than or equal to 1%, contains mud amount less than 5%, and free calcium oxide is less than 4%.
Process flow diagram shown in Figure 1 has specifically described a kind of preparation method who is used for the slag washed-out sand of alternative yellow ground.Adopt carse, medium and small three kinds of modes that different types of slag raw material is carried out fragmentation respectively, and be equipped with magnetic separation, sorting, make it to form the closed cycle of slag processing, thereby the metallic iron in the slag is fully rejected, except that the particle diameter that will be sub-elected be the slag pellet of 5～10mm do in addition he with, it is then to enter next process below the 5mm again that remaining slag all is converted into particle diameter.Its concrete technological process is as follows:
At first the slag raw material is carried out sorting,, after magnetic separation and granulated iron reclaim, enter thick brokenly, then carry out sorting again when its particle diameter during greater than 50mm; When sorting to less than 50mm the time, after magnetic separation and granulated iron reclaim, enter the sorting operation once more, carry out sorting again after broken during selected particle diameter enters greater than the pellet of 10mm; Particle diameter then enters sorting once more less than the pellet of 10mm, the particle diameter that sub-elects is the slag pellet of 5～10mm, can do him in addition uses, its particle diameter that finally sub-elects is less than the slag pellet of 5mm, quilt is evenly washed in the distribution importing washing magnetic separator, magnetic separation, when reclaiming iron sand, will be filtered out by the mortar that water is gone out, last again with sand washer receive the slag washed-out sand that matches of the particle diameter of the present invention and yellow ground for building.
Claims (2)
1, a kind of preparation method who is used for substituting the slag washed-out sand of yellow ground is characterized in that: it is slag to be carried out magnetic separation, fragmentation, sorting to its particle diameter repeatedly be less than or equal to 5mm, and then carry out sorting, the washing magnetic separation forms;
The concrete operations step is:
(1) the slag raw material is carried out sufficient fragmentation, sorting, magnetic separation, and following steel scoria magnetic separation material and the branch of concentrated particle diameter＜5mm selected materials;
(2) the magnetic separation material of its particle diameter＜5mm that will receive after last process is handled, branch being selected materials evenly to distribute and importing in the washing magnetic separator, fully wash, magnetic separation, when reclaiming the magnetic separation iron sand, will be filtered out by the mortar that water is gone out, again with sand washer receive washed-out sand.
2, the preparation method who is used for the slag washed-out sand of alternative yellow ground as claimed in claim 1 is characterized in that: the described slag washed-out sand that is used for substituting yellow ground, and its iron-holder is less than or equal to 1%, contains mud amount less than 5%, and free calcium oxide is less than 4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100161495A CN1298429C (en) | 2004-02-06 | 2004-02-06 | Method for preparing steel slag water washing sand used as a substitute for yellow sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100161495A CN1298429C (en) | 2004-02-06 | 2004-02-06 | Method for preparing steel slag water washing sand used as a substitute for yellow sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1557560A true CN1557560A (en) | 2004-12-29 |
| CN1298429C CN1298429C (en) | 2007-02-07 |
Family
ID=34351726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100161495A Expired - Fee Related CN1298429C (en) | 2004-02-06 | 2004-02-06 | Method for preparing steel slag water washing sand used as a substitute for yellow sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1298429C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375731C (en) * | 2005-07-04 | 2008-03-19 | 上海宝钢冶金建设公司 | GRC product made of using slag as aggregate |
| WO2008145189A1 (en) * | 2007-05-31 | 2008-12-04 | Recmix Belgium | Process for preparing a filler for asphalt or concrete starting from a slag material |
| CN101543803B (en) * | 2008-12-31 | 2013-07-17 | 赵金光 | Sand-washing method and sand-washing equipment |
| CN107469764A (en) * | 2017-10-13 | 2017-12-15 | 武汉中科水生环境工程股份有限公司 | A kind of preparation method of artificial swamp new packing for sewage disposal |
| CN110642545A (en) * | 2019-10-31 | 2020-01-03 | 武汉钢铁有限公司 | Preparation method of open-graded steel slag aggregate |
| CN112299733A (en) * | 2020-10-20 | 2021-02-02 | 徐州成瑞建筑科技研究院有限公司 | Method for stably and safely eliminating poor stability of hot splashing steel slag aggregate by acid washing and cleaning system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1008886B (en) * | 1987-02-12 | 1990-07-25 | 李建利 | Separating device for alluvial gold ore |
| CN1070171A (en) * | 1992-08-07 | 1993-03-24 | 山西省建筑科学研究所 | Dry slag sand and preparation method thereof |
| NO179858C (en) * | 1994-07-20 | 1997-01-02 | Baard Botten | Method and apparatus for separating hard from less hard substances |
| JPH09100145A (en) * | 1995-08-26 | 1997-04-15 | Wakamatsu Netsuren Kk | Modification of steelmaking slag by making use of incombustibles in municipal refuse |
| CN1453235A (en) * | 2002-04-24 | 2003-11-05 | 王银成 | Production process of sand for building |
-
2004
- 2004-02-06 CN CNB2004100161495A patent/CN1298429C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100375731C (en) * | 2005-07-04 | 2008-03-19 | 上海宝钢冶金建设公司 | GRC product made of using slag as aggregate |
| WO2008145189A1 (en) * | 2007-05-31 | 2008-12-04 | Recmix Belgium | Process for preparing a filler for asphalt or concrete starting from a slag material |
| WO2008145758A1 (en) * | 2007-05-31 | 2008-12-04 | Recmix Belgium | Process for preparing a filler for asphalt or concrete starting from a slag material |
| CN101687700B (en) * | 2007-05-31 | 2013-04-24 | 瑞科米克斯比利时公司 | Process for preparing a filler for asphalt or concrete starting from a slag material |
| US8628612B2 (en) | 2007-05-31 | 2014-01-14 | Recmix Belgium | Process for preparing a filler for asphalt or concrete starting from a slag material |
| CN101543803B (en) * | 2008-12-31 | 2013-07-17 | 赵金光 | Sand-washing method and sand-washing equipment |
| CN107469764A (en) * | 2017-10-13 | 2017-12-15 | 武汉中科水生环境工程股份有限公司 | A kind of preparation method of artificial swamp new packing for sewage disposal |
| CN107469764B (en) * | 2017-10-13 | 2019-11-01 | 武汉中科水生环境工程股份有限公司 | A kind of preparation method of the Performance of Constructed Wetlands Substrates for sewage treatment |
| CN110642545A (en) * | 2019-10-31 | 2020-01-03 | 武汉钢铁有限公司 | Preparation method of open-graded steel slag aggregate |
| CN112299733A (en) * | 2020-10-20 | 2021-02-02 | 徐州成瑞建筑科技研究院有限公司 | Method for stably and safely eliminating poor stability of hot splashing steel slag aggregate by acid washing and cleaning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1298429C (en) | 2007-02-07 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070207 |
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| CF01 | Termination of patent right due to non-payment of annual fee |