CN110342845A - Utilize the method for iron tailings slag production sand - Google Patents
Utilize the method for iron tailings slag production sand Download PDFInfo
- Publication number
- CN110342845A CN110342845A CN201910531520.8A CN201910531520A CN110342845A CN 110342845 A CN110342845 A CN 110342845A CN 201910531520 A CN201910531520 A CN 201910531520A CN 110342845 A CN110342845 A CN 110342845A
- Authority
- CN
- China
- Prior art keywords
- iron tailings
- partial size
- tailings slag
- sand
- slag
- 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.)
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Classifications
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- 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
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
-
- 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
- C04B18/12—Waste materials; Refuse from quarries, mining or the like
-
- 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
Abstract
The method that the present invention relates to the use of iron tailings slag production sand, this method includes screening, prepare hydrated adhesive condensate, it is granulated, prepare and etc., the utilization rate of iron tailings slag can be made to reach 100% using this method, and the sand of different size can be formed after granulation and preparation, natural sand and Machine-made Sand can be substituted completely, the problems such as can either solving sand resource exhaustion, it is able to ascend the comprehensive utilization ratio of iron tailings slag again simultaneously, solve a series of problems that iron tailings slag muck deposits generation, there is stronger feasibility during the problems such as solving iron tailings slag recycling and sand resource exhaustion, ideal effect can be generated.
Description
Technical field
The present invention relates to a kind of sides using iron tailings slag production sand.
Background technique
With the continuous promotion of China's steel and iron industry and technique of preparing, the accumulating amount of iron tailings slag reaches 5,000,000,000 tons or more,
Simultaneously also with about annual 1.5 hundred million tons of quantity continued emissions, and China only has 7%, Er Qietie to the comprehensive utilization ratio of iron tailings slag
The long-term stockpiling of mine tailings, which can generate, to be occupied a large amount of soils, pollution environment, destroys the problems such as ecology, if available iron mine tailings
It can solve the above problems instead of natural sand and mechanical sand, but since the partial size of iron tailings slag is generally in 0.001-1mm, wherein
Meet building in sand coarse granule it is less and of single specification, should not be used alone, it is lower to the utilization rate of iron tailings slag, it is existing
Usage mode be usually to be used in mixed way with Machine-made Sand, equally exist destruction ecology, increase the problems such as production cost, it is therefore, existing
Can some modes generate ideal effect and need further to inquire into.
Summary of the invention
Iron tail is solved in the way of completing to be granulated by iron tailings slag self-characteristic the object of the present invention is to provide a kind of
Slag utilization rate is low, environmental pollution, destroy ecology, the problems such as appropriation of land and production cost are higher utilizes iron tailings slag system
Make the method for sand.
Method using iron tailings slag production sand proposed by the invention includes the following steps: to screen: to iron tailings slag
It is screened, the iron tailings slag being screened is sieved into two parts that partial size is 0.001-0.2mm and partial size is 0.2-1mm；System
Standby hydrated adhesive condensate: first time magnetic separation is carried out to the particle that partial size is 0.001-0.2mm by magnetic plant；First time magnetic separation is complete
The partial particulate is put into agglomerating plant after and is sintered, sintering temperature is 800-1300 DEG C, is led to again after the completion of sintering
It crosses magnetic plant and second of magnetic separation is carried out to the partial particulate, the partial particulate is ground after the completion of magnetic separation again, grind
Then the powder for being 3-90 μm at partial size adds the regulator of 1-5% in the powder, form hydrated adhesive condensate；It is granulated: by aquation
It is to be mixed in the Granulation Equipments of 8-15MPa that the particle that gelling object and partial size are 0.2-1mm, which is put into pressure according to the ratio of 1:4,
It is granulated, forms the finished product coarse sand particles that partial size is 1-3mm after air drying；It prepares: and then by finished product coarse sand particles and iron tail
Iron tailings slag finished sand can be obtained after carrying out mixed preparing according to the ratio of 2:3 in slag.
In the preparation steps, the particle that can be also 0.2-1mm by coarse sand particles and partial size carries out mixing according to the ratio of 1:4 and matches
System.
The regulator includes the sodium hydroxide, calcium sulfate and calcium hydroxide of the equal preparation of molal quantity.
Method using iron tailings slag production sand proposed by the invention, the iron tail for being 0.001-0.2mm using partial size
Slag particle prepares hydrated adhesive condensate, then the iron tailings solid impurity particle mixing granulation for being 0.2-1mm by hydrated adhesive condensate and partial size, shape
At meet building requirements partial size be 1-3mm coarse sand particles, then after mixed preparing formed have different size particle at
Product sand can make full use of the iron tailings slag of different-grain diameter using this kind of method, not need to be used in mixed way with Machine-made Sand, also not need
By other cementitious materials, the granulation of coarse sand can be completed by hydrated adhesive condensate prepared by iron tailings slag itself, to iron tailings
The utilization rate of slag can reach 100%, and by a process for preparing hydrated adhesive condensate it is identical as cement performance, it is alternative existing
There is cement, reduces production cost.During preparing hydrated adhesive condensate in this method, part can be selected by first time magnetic separation
Iron can make the di-iron trioxide redox wherein contained at ferroso-ferric oxide after sintering, can should by second of magnetic separation
Part iron is selected, and the iron content in hydrated adhesive condensate on the one hand can be effectively reduced, and a large amount of iron on the other hand can be recycled, and works as it
When partial size is 3-90 μm, preferably, absorption and gelatinization results are preferable, and in mixing granulation, effect is more preferable for activity；Meanwhile it being granulated
When, for particle during drying, moisture can evaporate outward makes particle surface form stomata, can make concrete, sand in use
The endosmosis such as slurry have better bite force, higher intensity after masonry, close with natural sand structure；Regulator is adjustable
The strength grade of hydrated adhesive condensate；The process that iron tailings slag itself completes the production sand can be fully utilized in this kind of method, and makes
The sand made compression strength with higher and mechanical strength, can replace natural sand solve resource exhaustion the problems such as, simultaneously
It can solve a series of problems caused by iron tailings slag utilization rate is low and long-term accumulation again, there is ideal technical effect.
Specific embodiment:
Embodiment 1
Iron tailings slag is screened first, the iron tailings slag being screened is sieved into partial size is 0.001-0.2mm and partial size is
Two parts of 0.2-1mm；Then the particle that partial size is 0.001-0.2mm is put into magnetic plant by magnetic plant and carries out the
Magnetic separation；The partial particulate is put into agglomerating plant after the completion of first time magnetic separation and is sintered, sintering temperature is 1050 DEG C,
Second of magnetic separation is carried out to the partial particulate again by magnetic plant after the completion of sintering, again to the part after the completion of magnetic separation
Grain is ground, and is ground into the powder that partial size is 60 μm, is then added in the powder by sodium hydroxide, calcium sulfate and hydroxide
The regulator of three kinds of material compositions of calcium, above-mentioned three kinds of substances press the equal preparation of molal quantity, and regulator total amount is above-mentioned powder matter
The 3% of amount, is mixing uniformly to form hydrated adhesive condensate；The water of the 10%-12% of its quality is added into hydrated adhesive condensate and is stirred equal
After even, mix with the particle that partial size is 0.2-1mm according to the ratio of 1:4, be then placed in Granulation Equipments that pressure is 12MPa it is interior into
Row mixing granulation, the grain diameter produced are 1-3mm, and finished product coarse sand particles are formed after air drying；By finished product coarse sand particles
Iron tailings slag finished sand can be obtained after carrying out mixed preparing according still further to the ratio of 2:3 with iron tailings slag.
Embodiment 2
Iron tailings slag is screened first, the iron tailings slag being screened is sieved into partial size is 0.001-0.2mm and partial size is
Two parts of 0.2-1mm；Then the particle that partial size is 0.001-0.2mm is put into magnetic plant by magnetic plant and carries out the
Magnetic separation；The partial particulate is put into agglomerating plant after the completion of first time magnetic separation and is sintered, sintering temperature is 800 DEG C,
Second of magnetic separation is carried out to the partial particulate again by magnetic plant after the completion of sintering, again to the part after the completion of magnetic separation
Grain is ground, and is ground into the powder that partial size is 3 μm, is then added in the powder by sodium hydroxide, calcium sulfate and hydroxide
The regulator of three kinds of material compositions of calcium, above-mentioned three kinds of substances press the equal preparation of molal quantity, and regulator total amount is above-mentioned powder matter
The 1% of amount, is mixing uniformly to form hydrated adhesive condensate；The water of the 10%-12% of its quality is added into hydrated adhesive condensate and is stirred equal
After even, mix with the particle that partial size is 0.2-1mm according to the ratio of 1:4, be then placed in Granulation Equipments that pressure is 8MPa it is interior into
Row mixing granulation, the grain diameter produced are 1-2mm, and finished product coarse sand particles are formed after air drying；By finished product coarse sand particles
Iron tailings slag finished sand can be obtained after carrying out mixed preparing according still further to the ratio of 2:3 with iron tailings slag.
Embodiment 3
Iron tailings slag is screened first, the iron tailings slag being screened is sieved into partial size is 0.001-0.2mm and partial size is
Two parts of 0.2-1mm；Then the particle that partial size is 0.001-0.2mm is put into magnetic plant by magnetic plant and carries out the
Magnetic separation；The partial particulate is put into agglomerating plant after the completion of first time magnetic separation and is sintered, sintering temperature is 1300 DEG C,
Second of magnetic separation is carried out to the partial particulate again by magnetic plant after the completion of sintering, again to the part after the completion of magnetic separation
Grain is ground, and is ground into the powder that partial size is 90 μm, is then added in the powder by sodium hydroxide, calcium sulfate and hydroxide
The regulator of three kinds of material compositions of calcium, above-mentioned three kinds of substances press the equal preparation of molal quantity, and regulator total amount is above-mentioned powder matter
The 5% of amount, is mixing uniformly to form hydrated adhesive condensate；The water of the 10%-12% of its quality is added into hydrated adhesive condensate and is stirred equal
After even, mix with the particle that partial size is 0.2-1mm according to the ratio of 1:4, be then placed in Granulation Equipments that pressure is 15MPa it is interior into
Row mixing granulation, the grain diameter produced are 2-3mm, and finished product coarse sand particles are formed after air drying；By finished product coarse sand particles
Iron tailings slag finished sand can be obtained after carrying out mixed preparing according still further to the ratio of 2:3 with iron tailings slag.
Embodiment 4
In the preparation steps of the present embodiment, be 1-3mm by partial size finished product coarse sand particles and partial size be 0.2-1mm iron tailings
Slag carries out mixed preparing according to the ratio of 1:4, other steps are identical as embodiment 1-3；The present embodiment is the difference is that change
Ratio shared by greater particle size particle in iron tailings slag finished sand is become, it is further provided the finished sand of different purposes.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (3)
1. utilizing the method for iron tailings slag production sand, it is characterised in that: described method includes following steps:
Screening: screening iron tailings slag, and the iron tailings slag being screened is sieved into partial size is 0.001-0.2mm and partial size is
Two parts of 0.2-1mm；
It prepares hydrated adhesive condensate: first time magnetic separation is carried out to the particle that partial size is 0.001-0.2mm by magnetic plant；For the first time
The partial particulate is put into agglomerating plant after the completion of magnetic separation and is sintered, sintering temperature is 800-1300 DEG C, after the completion of sintering
Second of magnetic separation is carried out to the partial particulate again by magnetic plant, the partial particulate is ground after the completion of magnetic separation again
Mill is ground into the powder that partial size is 3-90 μm, then adds the regulator of 1-5% in the powder, forms hydrated adhesive condensate；
Be granulated: it is making for 8-15MPa that the particle that hydrated adhesive condensate and partial size are 0.2-1mm, which is put into pressure according to the ratio of 1:4,
Mixing granulation is carried out in grain equipment, forms the finished product coarse sand particles that partial size is 1-3mm after air drying；
It prepares: and then iron tail can be obtained after finished product coarse sand particles and iron tailings slag are carried out mixed preparing according to the ratio of 2:3
Slag finished sand.
2., can also be by coarse sand particles and partial size according to the method described in claim 1, it is characterized by: in the preparation steps
Mixed preparing is carried out according to the ratio of 1:4 for the particle of 0.2-1mm.
3. according to the method described in claim 1, it is characterized by: the regulator includes the hydroxide of the equal preparation of molal quantity
Sodium, calcium sulfate and calcium hydroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910531520.8A CN110342845B (en) | 2019-06-19 | 2019-06-19 | Method for manufacturing sand by using iron tailing slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910531520.8A CN110342845B (en) | 2019-06-19 | 2019-06-19 | Method for manufacturing sand by using iron tailing slag |
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| Publication Number | Publication Date |
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| CN110342845A true CN110342845A (en) | 2019-10-18 |
| CN110342845B CN110342845B (en) | 2022-02-18 |
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| CN201910531520.8A Active CN110342845B (en) | 2019-06-19 | 2019-06-19 | Method for manufacturing sand by using iron tailing slag |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112250335A (en) * | 2020-11-02 | 2021-01-22 | 赵生荣 | Energy-saving recovery-based method for manufacturing inert filler balls of waste slag |
Citations (7)
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| JPS62153153A (en) * | 1985-12-26 | 1987-07-08 | 日本磁力選鉱株式会社 | Coagulating method using converter collected dust as binder |
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| CN102105607A (en) * | 2008-07-18 | 2011-06-22 | 杰富意钢铁株式会社 | Tailing processing method |
| CN102659360A (en) * | 2012-04-24 | 2012-09-12 | 武汉工程大学 | Iron tailing steam curing brick and preparation method thereof |
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| JPS62153153A (en) * | 1985-12-26 | 1987-07-08 | 日本磁力選鉱株式会社 | Coagulating method using converter collected dust as binder |
| CN102105607A (en) * | 2008-07-18 | 2011-06-22 | 杰富意钢铁株式会社 | Tailing processing method |
| CN101746981A (en) * | 2008-12-16 | 2010-06-23 | 长春金世纪矿业技术开发有限公司 | Light-weight insulating brick of tailings |
| CN102659360A (en) * | 2012-04-24 | 2012-09-12 | 武汉工程大学 | Iron tailing steam curing brick and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112250335A (en) * | 2020-11-02 | 2021-01-22 | 赵生荣 | Energy-saving recovery-based method for manufacturing inert filler balls of waste slag |
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| CN110342845B (en) | 2022-02-18 |
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