CN1557970A - Preparation method of steel slag mould sand - Google Patents
Preparation method of steel slag mould sand Download PDFInfo
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- CN1557970A CN1557970A CNA2004100161512A CN200410016151A CN1557970A CN 1557970 A CN1557970 A CN 1557970A CN A2004100161512 A CNA2004100161512 A CN A2004100161512A CN 200410016151 A CN200410016151 A CN 200410016151A CN 1557970 A CN1557970 A CN 1557970A
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- slag
- molding sand
- sand
- steel slag
- shrend
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- 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
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Abstract
The present invention relates to the application of converter steel slag, and is especially the preparation process of steel slag molding sand. Steel slag is injected with water and quickly cooled to obtain water quenched steel slag or cylindrical slag, and the quenched steel slag or cylindrical slag is circularly crushed and sieved to for molding sand with granularity not greater than 5 mm and in different size. The molding sand has low free calcium oxide content, low metal iron content, low pulverization rate and other features, and may be used to replace quartz sand widely used as fine aggregate, sand blast, water filtering material, etc.
Description
Technical field
The invention belongs to wear-resisting material of construction production field, relevant with the application of bessemer furnace slag, relate to a kind of method of utilizing bessemer furnace slag to prepare the slag molding sand.
Background technology
For the bessemer furnace slag that is in meltbility high-temperature liquid state, semi liquid state that steel-making produces, formed shrend slag or cylinder slag after water spray, water filling cooling are to be mainly CaO, Fe by Chemical Composition
2O
3, SiO
2Deng the novel inorganic mineral that constitute, its most size distribution are in 0～50mm.Practice shows, after utilizing waste heat, sprinkling water, store up, can further dissolve its free calcium oxide.Yet, up to the present, these bessemer furnace slags that pile up like a mountain also only be heap old after, part is done low value utilizations such as raw material raw material for the cement mill, it is not developed on a large scale as yet.A large amount of converter steel slag mucks is old, has both taken a large amount of places, has polluted environment again.
(the slag molding sand is the slag that bessemer furnace slag produces after water cooling is handled, and it comprises shrend slag and cylinder slag, is to be mainly CaO, Fe by Chemical Composition
2O
3, SiO
2Deng the novel inorganic mineral that constitute, it is that the slag that is in meltbility high-temperature liquid state, semi liquid state that steel-making produces cools off and forms through water spray, water filling, and its most size distribution are in 0～50mm.After utilizing waste heat, sprinkling water, store up, can further dissolve its free calcium oxide.These slags only be at present heap old after, part is done low value utilizations such as raw material raw material for the cement mill, it is not developed on a large scale as yet.A large amount of slag heaps is old, has both taken a large amount of places, has polluted environment again.)
Summary of the invention
For overcoming the deficiency of converter steel slag utilization in the prior art, the invention provides a kind of preparation method of slag molding sand, the waste of steel-making is fully utilized, thereby improves the comprehensive utilization value of bessemer furnace slag.
The technical solution adopted for the present invention to solve the technical problems:
A kind of preparation method of slag molding sand, its substantive distinguishing features is: described slag molding sand is after bessemer furnace slag is handled by water filling, emergency cooling process method, formed shrend slag or cylinder slag is carried out magnetic separation, fragmentation, screening again form.
Described shrend slag or cylinder slag formed slag molding sand after processing is that particle diameter is less than or equal to 5mm and has different size or the molding sand of order number.
Compared with prior art, the present invention has the following advantages:
1, the present invention utilizes the trade waste-bessemer furnace slag of STEELMAKING PRODUCTION, has effectively utilized waste resource.
2, the bessemer furnace slag after art breading is handled through the multiple tracks iron removal step again, has realized the separation fully of slag iron, therefore, has characteristics such as free calcium oxide is low, metal Ferrum content is low, Pulverization ratio is low.
3, according to the slag molding sand of the inventive method preparation, particle diameter is little, hardness is high, wear resisting property is good, can substitute quartz sand fully, can be widely used in abrasion-proof terrace as fine aggregate, also can be used as materials such as sandblast, drainage.
4, the present invention is directed to the different-grain diameter of Water Quenching Slag or cylinder slag raw material, adopt carse, medium and small three kinds of modes circulate fragmentation, gradation sizing magnetic separation respectively, the efficient height of sorting, and quality is good.
Description of drawings
Fig. 1 is the technological process of production block diagram of slag molding sand of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Figure 1 shows that a kind of technological process of production block diagram of slag molding sand, the preparation method of described slag molding sand is after bessemer furnace slag is handled by water filling, emergency cooling process method, formed shrend slag or cylinder slag is carried out magnetic separation, fragmentation, screening again form.
Described shrend slag or cylinder slag formed slag molding sand after processing is that granularity is less than or equal to 5mm and has different size or the molding sand of order number.
The concrete operation method that formed shrend slag or cylinder slag is carried out again magnetic separation, fragmentation, screening is:
(1) shrend slag or cylinder slag are taked carse, medium and small breaking method, the gradation sizing magnetic separation; Progressively be processed into the slag molding sand raw material that particle diameter is less than or equal to 5mm;
(2) particle diameter is less than or equal to the slag molding sand raw material of 5mm, sieves step by step by a plurality of individual layer roto-sifters or multilayer roto-sifter by different meshes, finally receive the slag molding sand of different meshes.
As shown in Figure 1, bessemer furnace slag is formed Water Quenching Slag or cylinder slag raw material after art breading, after sorting, when its particle diameter less than 10mm during greater than 5mm, after the thin broken operation that only needs to represent, just can directly enter thin broken screening magnetic separation operation through dotted arrow among the figure; Through sorting, when its particle diameter less than 30mm during greater than 10mm, during dotted arrow is represented in figure after broken operation and the screening magnetic separation thereof, also need through the further thin thin broken screening magnetic separation operation of being allowed for access after broken; Through sorting, when its particle diameter is that 30mm is when above, after solid arrow is represented among the process figure the thick broken operation and thick screening magnetic separation of breaking, also need to break and thin broken two procedures in the process respectively, fragmentation is carried out in circulation, magnetic separation is sieved in classification, could progressively form the slag molding sand raw material that particle diameter is less than or equal to 5mm; Classified again screening, finally just can form particle diameter is less than or equal to the slag molding sand that the 5mm plurality of specifications is a different meshes.In gradation sizing magnetic separation to its raw material, selected metal charge is reclaimed, all very necessary for the utilization again of the environment protection and the energy.
Select Baosteel high-quality bessemer furnace slag for use, after water filling, the processing of emergency cooling process method, formed shrend slag or cylinder slag are carried out to be prepared into the slag molding sand that its particle diameter is less than or equal to the 5mm different size after multiple working procedures such as magnetic separation, fragmentation, screening handle.
Claims (3)
1, a kind of preparation method of slag molding sand is characterized in that: it is after bessemer furnace slag is handled by water filling, emergency cooling process method, formed shrend slag or cylinder slag is carried out magnetic separation, fragmentation, screening again form.
2, slag sand conditioning method as claimed in claim 1 is characterized in that: described shrend slag or cylinder slag formed slag molding sand after processing is that particle diameter is less than or equal to 5mm and has different size or the molding sand of order number.
3, slag sand conditioning method as claimed in claim 1 or 2 is characterized in that: the concrete operation method that formed shrend slag or cylinder slag is carried out magnetic separation, fragmentation, screening is:
(1) shrend slag or cylinder slag are taked carse, medium and small breaking method, the gradation sizing magnetic separation; Progressively be processed into the slag molding sand raw material that its particle diameter is less than or equal to 5mm;
(2) particle diameter is less than or equal to the slag molding sand raw material of 5mm, sieves step by step by a plurality of individual layer roto-sifters or multilayer roto-sifter by different meshes, finally receive the slag molding sand of different meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100161512A CN1557970A (en) | 2004-02-06 | 2004-02-06 | Preparation method of steel slag mould sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100161512A CN1557970A (en) | 2004-02-06 | 2004-02-06 | Preparation method of steel slag mould sand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1557970A true CN1557970A (en) | 2004-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100161512A Pending CN1557970A (en) | 2004-02-06 | 2004-02-06 | Preparation method of steel slag mould sand |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049520A (en) * | 2010-11-29 | 2011-05-11 | 南陵鹏程机械制造有限公司 | Extraction method of environment-friendly and energy-saving steel grit |
| CN102527920A (en) * | 2012-02-28 | 2012-07-04 | 河南科技大学 | Preparation method for molding sand used for non-ferrous metal |
| CN110293111A (en) * | 2019-05-13 | 2019-10-01 | 江苏天楹环保能源成套设备有限公司 | A method of utilizing solid waste high temperature molten glass system building materials |
| CN115069362A (en) * | 2022-05-30 | 2022-09-20 | 湖北工业大学 | Carbon fixation and emission reduction method for steel plant wet-grinding steel slag and application |
-
2004
- 2004-02-06 CN CNA2004100161512A patent/CN1557970A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049520A (en) * | 2010-11-29 | 2011-05-11 | 南陵鹏程机械制造有限公司 | Extraction method of environment-friendly and energy-saving steel grit |
| CN102527920A (en) * | 2012-02-28 | 2012-07-04 | 河南科技大学 | Preparation method for molding sand used for non-ferrous metal |
| CN102527920B (en) * | 2012-02-28 | 2013-11-06 | 河南科技大学 | Preparation method for molding sand used for non-ferrous metal |
| CN110293111A (en) * | 2019-05-13 | 2019-10-01 | 江苏天楹环保能源成套设备有限公司 | A method of utilizing solid waste high temperature molten glass system building materials |
| CN110293111B (en) * | 2019-05-13 | 2021-09-14 | 江苏天楹环保能源成套设备有限公司 | Method for making building material by using solid waste high-temperature molten glass |
| CN115069362A (en) * | 2022-05-30 | 2022-09-20 | 湖北工业大学 | Carbon fixation and emission reduction method for steel plant wet-grinding steel slag and application |
| CN115069362B (en) * | 2022-05-30 | 2023-11-21 | 湖北工业大学 | Method for carbon fixation and emission reduction of wet-milling steel slag in steel plant and application of method |
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