CN101293751A - Comprehensive treatment method for mine tailing - Google Patents
Comprehensive treatment method for mine tailing Download PDFInfo
- Publication number
- CN101293751A CN101293751A CNA2008100182343A CN200810018234A CN101293751A CN 101293751 A CN101293751 A CN 101293751A CN A2008100182343 A CNA2008100182343 A CN A2008100182343A CN 200810018234 A CN200810018234 A CN 200810018234A CN 101293751 A CN101293751 A CN 101293751A
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- China
- Prior art keywords
- slag
- mine
- mine tailing
- parts
- mine tailings
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
- C04B28/12—Hydraulic lime
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to the technical field of comprehensive using of mine tailings, in particular to a method for comprehensively treating the mine tailings. The invention solves the problems of high cost, unstable quality and having potential safety hazard in the process of preparing bricks by the mine tailings and nonideal comprehensive treatment effect existing in the prior art; the technical scheme provided by the invention is a comprehensive treat method for the mine tailings, comprising the following steps sequentially: 1. pulp processing; 2. slag pretreatment; 3. steaming nourishing and making bricks. Compared with the prior art, the method for comprehensively treating the mine tailings has the following advantages: 1. solving a plurality of problems existing in the mine tailings radically; 2. saving large funds; 3. saving vast resources; 4. simple technological method; 5. safe, reliable and environmental protection products; 6. low cost; 7. good comprehensive treatment effect, which has significant practical meaning.
Description
Technical field
The present invention relates to mill tailings comprehensive utilization technique field, be specifically related to the method that a kind of tailings comprehensive is administered.
Background technology
Along with the continuous exploitation of the mankind to Mineral resources, the tailings discharging amount grows with each passing day.As everyone knows, the accumulation of mine tailing causes atmosphere, soil and water to pollute easily, destroys ecotope.If deal with improperly then can cause danger such as rubble flow, dam break, when serious even can cause geologic hazard.Therefore, the disposal of mill tailings is a global difficult problem always.
At present, mainly be as material of construction to the development and use of mine tailing, this respect, external starting is early.Wherein, USSR (Union of Soviet Socialist Republics) has just been carried out the research and the production of mine tailing building materials as far back as the beginning of the sixties in last century, as Ke Liwo Roger iron ore after mine tailing being carried out suitable classification as the aggregate, also with fine-graded mine tailing production silicate product; Then has built up the Kursk is the cement production enterprise and the glasswork of raw material with the mine tailing; The U.S. is except that reclaiming fluorite, feldspar, quartz from barren rock, present most mine tailings are used as concrete fill and pavior; Japan then has the people that iron tailings is mixed with 10% diatomite, is fired into light skeletal.Therefore, from the world, though the application direction of various countries is all paid much attention to some industrial country even building " no abandoned mine mountain " as the objective of the struggle to the development and use of mine tailing with to utilize degree different.
China is mineral products big countries, also is one of country of mine tailing storage maximum.According to statistics, about 300,000,000 tons of the annual tailings discharging amount of China, mine tailing accounts for 30% of national solid waste total amount.The stacking of the annual mine tailing arable land more than 30,000 mu that not only needs to account for, the stacking expense of paying is also up to 1,000,000,000 yuan, the more important thing is long-term stacking, the long-term stacking of especially poisonous mine tailing is big especially to the man and nature environmental hazard, as containing a large amount of prussiates in the mine tailings such as gold mine, copper mine, and mine tailings such as navajoite and molybdenum ore contain a large amount of sulfuric acid and nitric acid etc.These harm are divided into two big classes, and the one, surperficial, these our naked eyes of part can be seen, promptly deleterious waste water and the slag that contains toxin that piles up the mine tailing storehouse; The 2nd, potential, it comprises: 1, underground water is formed nonvolatil pollution; 2, resolvent forms air and pollutes; 3, the exploitation in a mine, have one even a plurality of tailing dam at least, influence along with time and peripheral other factors, contingent dam break constitutes serious threat to living in tailing dam downstream people's lives and properties, we can say that a tailing dam is exactly a time bomb, in case accident occurs, its loss is surprising.For example: Zhenan County, Shaanxi in 2006 " 4.30 " mine tailing dam break incident causes 17 people's death,, particularly Danjiang River, Han River pollute to the waters, downstream.
Therefore government pays much attention to the exploitation and the comprehensive utilization of mine tailing, in " Agenda 21 ", it is classified as one of content of the development of emphasis support from now on.At present, China has in the main achievement aspect the development and Application of mine tailing building materials: utilize mine tailing to produce materials for wall (brick, folder building block), cement, glass and ceramic, artificial marble, refractory materials and mine tailing is handled the back and be used as several aspects such as concrete coarse-fine aggregate and construction sand.It is maximum wherein to utilize mine tailing to produce the achievement in research of materials for wall, also is the developing direction of mine tailing building materials, but present tailing-bricks compares with the ordinary sinter clay brick, and the subject matter of existence is 1, the ore pulp water content is too high, is not easy to reach the brickmaking requirement; The mine tailing particle is too little, does not have load bearing structure, must add a large amount of siccative, causes the brick making cost height, becomes the brick poor performance, the quality instability.2, contain a large amount of harmful even hypertoxic materials in the mine tailing, can not remove effectively in the brickmaking process, therefore have potential safety hazard.3, can not reach the effect of slag being carried out the comprehensive regulation: the enterprise of present a spot of production tailing-bricks, its raw material slag also is to obtain from the mine tailing storehouse, be not directly to utilize ore pulp production, the mine tailing storehouse still exists, and does not therefore reach the effect of the comprehensive regulation at all.
Summary of the invention
The purpose of this invention is to provide the method that a kind of tailings comprehensive is administered, to solve mine tailing brick making cost height, quality instability that prior art exists, to have potential safety hazard and the unfavorable problem of effect of integrated pest management.
For solving the problem that prior art exists, technical scheme of the present invention is:
A kind of comprehensive processing method of mine tailing comprises the steps: successively
One, ore pulp is handled: ore pulp is divided into waste water and slag, waste water recycling through press filtration;
Two, slag pre-treatment: add 20～50 siccative in 50～80 parts the slag, the broken stirring cleared up 2～4 hours.
Three, steam-cured brickmaking: be pressed into adobe, steam-cured brickmaking.
Above-mentioned slag is gold mine, iron ore, copper mine, navajoite, molybdenum ore slag.
In the step 2, siccative is cement and sandstone.
In the step 2, siccative is lime and sandstone.
When slag was 70～80 parts, cement or lime were 15～25 parts, and sandstone is 5～10 parts.Be particularly suitable for doing standard brick.
Can also add the solidifying agent of trace, described solidifying agent is gypsum or water glass.Use solidifying agent, can suitably reduce the consumption of cement or lime.
In the above-mentioned steps three, after secondary breaking is stirred, put into wheel roller and mix, and then through moulding, 1.5～3 hours rest, 4～8 hours steam-cured, go out the still operation and finish.
Compared with prior art, advantage of the present invention is as follows:
1, fundamentally solved a large amount of problems that mine tailing exists: administer from the source, not only alleviate the pollution of mine tailing, optimized ecotope atmosphere, soil and water, but also can eliminate rubble flow, hidden danger such as inrush.
2, save substantial contribution: the present invention has reduced storage capacity, the storehouse in mine tailing storehouse and has pressed, and even with building the mine tailing storehouse, has not saved the soil of building the mine tailing storehouse; Required substantial contribution and annual a large amount of human and material resources and the financial resources of safeguarding tailing dam safety of building tailing dam have been saved simultaneously.
3, the present invention can save ample resources: not only can utilize solid waste in the mine tailing, consume a large amount of mill tailingss; Simultaneously waste water being utilized, is example with the gold mine, and a large amount of prussiates that liquid portion contains adopt the method backflow of sealing and by second stage employ between ore dressing vehicle, can reduce the new product input amount of sodium cyanide, and the consumption of saving sodium cyanide can reach more than 20%.
4, processing method is simple: method provided by the invention is simple, and wherein required raw material types is few, and is easy to operate, from ore pulp to becoming brick, whole process about 13 hours, pipelining, expense is little.
5, product safety, reliable, environmental protection: because traditional clay solid brick from great, a large amount of soil of loss, therefore in recent years, country has completely forbidden and has fired clay brick in China.Product provided by the invention is through detecting, and every index all is higher than national standard, can substitute clay brick fully.
6, cost is low: too little in order to overcome the mine tailing particle in the present invention, there is not the problem of load bearing structure, and also need to add sandstone, but consumption is less, therefore reduced brick making cost.
7, effect of integrated pest management is good, have important practical significance: adopt technology of the present invention, its raw material is the ore pulp that produces in the production process, therefore all problems that the mine tailing storehouse is caused have been stopped to build, simultaneously because the slag that is consumed in the last brickmaking step of this technology can account for the over half of raw material, therefore usage quantity is big, not only can consume the mine tailings that produced the same day, can also consume the mine tailings that tailing is deposited.Therefore the present invention has the good comprehensive regulation effect.
Description of drawings
Accompanying drawing is a workflow diagram of the present invention.
Embodiment
Below in conjunction with embodiment the present invention is explained.
Embodiment 1:
One, ore pulp is handled: the ore pulp of copper mine is divided into waste water and slag through press filtration, contains a large amount of prussiates in the waste water, adopts the method for sealing to reflux for the enrichment plant second stage employ, has accomplished zero release, and the slag water content is about 18%, and is not suitable for directly doing brick.
Two, slag pre-treatment: add 12 parts cement and 38 parts sandstone in 50 parts the slag, the broken stirring put into slaking silos and cleared up 2 hours.This moment, scoriaceous water content reached about 10%, reached the brickmaking requirement, and sodium cyanide remaining in this process volatilizees automatically.
Three, brickmaking: after secondary breaking is stirred, put into wheel roller and mix, and then through moulding, quiet stop the chamber rest 3h, go into steam-cured still steam-cured (about 194 ℃) 8h, go out still.A spot of remaining sodium cyanide decomposes in this process fully.
Embodiment 2:
One, ore pulp is handled: with embodiment 1.
Two, slag pre-treatment: add 10 parts cement, sandstone and 0.5 part of water glass of 30 parts in 65 parts the slag, the broken stirring put into slaking silos and cleared up 3 hours.
Three, brickmaking: after secondary breaking is stirred, put into wheel roller and mix, and then through moulding (standard brick or Brick with blind hole), quiet stop the chamber rest 2h, go into steam-cured still steam-cured (about 194 ℃) 6h, go out still.
The steamed brick that the copper mine slag is made by adding water glass and cement, and through high-pressure steaming and cultivating, has decomposed sodium cyanide remaining in the mine tailing fully.Product is removed multinomial detections such as experiment through the anti-folding of Shangluo City product quality supervision and testing institute and Xi'an University of Architecture and Technology, resistance to compression, radioactivity and sodium cyanide, quality meets national standard.Shining index wherein is 0.37, outer is 0.72 according to index, cyanide content 0.015, much smaller than the specified drinking water standard 1.0 of country, and passed through strength test in 20 grades of the frost resistances, detect identification through Shaanxi Province's building energy conservation product and novel wall material reform office, this product can use at the covil construction bearing wall positions of 7 degree at seismic fortification intensity.
Embodiment 3:
One, ore pulp is handled: the ore pulp of gold mine is divided into waste water and slag through press filtration, and waste water contains a large amount of prussiates, adopts the method for sealing to reflux for the enrichment plant second stage employ, has accomplished zero release.
Two, slag pre-treatment: add 12 parts cement, 28 parts sandstone in 60 parts the slag, the broken stirring put into slaking silos and cleared up 2 hours.
Three, brickmaking: after secondary breaking is stirred, put into wheel roller and mix, and then through moulding (Brick with blind hole), quiet stop the chamber rest 1.5h, go into the steam-cured 8h of steam-cured still, go out still.
Embodiment 4:
One, ore pulp is handled: the ore pulp of gold mine is divided into waste water and slag through press filtration, and waste water contains a large amount of prussiates, adopts the method for sealing to reflux for the enrichment plant second stage employ, has accomplished zero release.
Two, slag pre-treatment: add 20 parts cement, 5 parts sandstone in 75 parts the slag ore deposit, the broken stirring put into slaking silos and cleared up 3 hours;
Three, brickmaking: after secondary breaking is stirred, put into wheel roller and mix, and then through moulding (standard square), quiet stop the chamber rest 2h, go into the steam-cured 6h of steam-cured still, go out still.
The steamed brick that the gold mine slag is made by adding the cement siccative, and through high-pressure steaming and cultivating, has decomposed sodium cyanide remaining in the mine tailing fully.Product is removed multinomial detections such as experiment through the anti-folding of Shangluo City product quality supervision and testing institute and Xi'an University of Architecture and Technology, resistance to compression, radioactivity and sodium cyanide, quality meets national standard.Shining index wherein is 0.37, outer is 0.7 according to index, cyanide content 0.016, much smaller than the specified drinking water standard 1.0 of country, and passed through strength test in 20 grades of the frost resistances, detect identification through Shaanxi Province's building energy conservation product and novel wall material reform office, this product can use at the covil construction bearing wall positions of 7 degree at seismic fortification intensity.
Embodiment 5:
One, ore pulp is handled: the ore pulp of navajoite is divided into waste water and slag through press filtration, and waste water contains sulfuric acid, nitric acid, adopts the method for sealing to reflux for the enrichment plant second stage employ, has accomplished zero release;
Two, slag pre-treatment: add 15 parts lime, 10 parts sandstone in 80 parts the slag, the broken stirring put into slaking silos and cleared up 2 hours.
Three, brickmaking: after secondary breaking is stirred, put into wheel roller and mix, and then through moulding (standard brick), quiet stop the chamber rest 3h, go into steam-cured still steam-cured (about 194 ℃) 7h, go out still.
Embodiment 6:
One, ore pulp is handled: the ore pulp of navajoite is divided into waste water and slag through press filtration, and waste water contains sulfuric acid, nitric acid, adopts the method for sealing to reflux for the enrichment plant second stage employ, has accomplished zero release;
Two, slag pre-treatment: add 10 parts lime, 30 parts sandstone in 60 parts the slag ore deposit, the broken stirring put into slaking silos and cleared up 3.5 hours;
Three, brickmaking: after secondary breaking is stirred, put into wheel roller and mix, and then through moulding (Brick with blind hole), quiet stop the chamber rest 1.5h, go into steam-cured still steam-cured (about 194 ℃) 8h, go out still.
Embodiment 7:
One, ore pulp is handled: the ore pulp of molybdenum ore is divided into waste water and slag through press filtration, and waste water contains sulfuric acid, nitric acid, adopts the method for sealing to reflux for the enrichment plant second stage employ, has accomplished zero release;
Two, slag pre-treatment: add 10 parts lime, 30 parts sandstone in 60 parts the slag, the broken stirring put into slaking silos and cleared up 2 hours;
Three, brickmaking: after secondary breaking is stirred, put into wheel roller and mix, and then through moulding (Brick with blind hole), quiet stop the chamber rest 3h, go into the steam-cured 6h of steam-cured still, go out still.
Above embodiment 5～7 in, the steamed brick that slag is made by adding the lime siccative, and through high-pressure steaming and cultivating, has decomposed soda acid remaining in the mine tailing fully.Product is removed multinomial detections such as experiment through the anti-folding of Shangluo City product quality supervision and testing institute, resistance to compression, radioactivity and sodium cyanide, quality meets national standard.Shining index wherein is 0.37, outer is 0.7 according to index, and passed through strength test in 20 grades of the frost resistances, detect through Shaanxi Province's building energy conservation product and novel wall material reform office and assert that this product can use at the covil construction bearing wall positions of 7 degree at seismic fortification intensity.
Claims (6)
1, a kind of comprehensive processing method of mine tailing comprises the steps: successively
One, ore pulp is handled: ore pulp is divided into waste water and slag, waste water recycling through press filtration;
Two, slag pre-treatment: add 20～50 siccative in 50～80 parts the slag, the broken stirring cleared up 2～4 hours;
Three, steam-cured brickmaking: be pressed into adobe, steam-cured brickmaking.
2, the comprehensive processing method of a kind of mine tailing as claimed in claim 1 is characterized in that: described slag is gold mine, iron ore, copper mine, navajoite, molybdenum ore slag.
3, the comprehensive processing method of a kind of mine tailing as claimed in claim 1 or 2 is characterized in that: in the step 2, siccative is cement and sandstone or lime and sandstone.
4, the comprehensive processing method of a kind of mine tailing as claimed in claim 3 is characterized in that: when slag was 70～80 parts, cement or lime were 15～25 parts, and sandstone is 5～10 parts.
5, the comprehensive processing method of a kind of mine tailing as claimed in claim 3 is characterized in that: can also add the solidifying agent of trace, described solidifying agent is gypsum or water glass.
6, as the comprehensive processing method of claim 1,2 or 4 described a kind of mine tailings, it is characterized in that: in the described step 3, after secondary breaking is stirred, put into wheel roller and mix, and then through moulding, 1.5～3 hours rest, 4～8 hours steam-cured, go out the still operation and finish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100182343A CN101293751A (en) | 2008-05-16 | 2008-05-16 | Comprehensive treatment method for mine tailing |
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| CNA2008100182343A CN101293751A (en) | 2008-05-16 | 2008-05-16 | Comprehensive treatment method for mine tailing |
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| CN101293751A true CN101293751A (en) | 2008-10-29 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101839828A (en) * | 2010-05-19 | 2010-09-22 | 攀钢集团钢铁钒钛股份有限公司 | Digestion method and detection method for iron ore |
| CN101634174B (en) * | 2009-02-19 | 2012-05-23 | 王昌雄 | Seepage-prevention anti-shearing heat-insulating hollow building block |
| CN102718458A (en) * | 2012-07-03 | 2012-10-10 | 王国帅 | Process method for preparing steam-cured brick by molybdenum tailings |
| CN104289496A (en) * | 2014-09-19 | 2015-01-21 | 成都理工大学 | Method applied to treatment of vanadium-titanium slag |
| CN113121140A (en) * | 2021-03-08 | 2021-07-16 | 河南科技大学 | Method for preparing active admixture of color sand, roadbed stone and cement from molybdenum ore tailings |
| CN114669585A (en) * | 2022-03-14 | 2022-06-28 | 昆明理工大学 | Method for weathered soil and resource utilization of silicate material |
-
2008
- 2008-05-16 CN CNA2008100182343A patent/CN101293751A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634174B (en) * | 2009-02-19 | 2012-05-23 | 王昌雄 | Seepage-prevention anti-shearing heat-insulating hollow building block |
| CN101839828A (en) * | 2010-05-19 | 2010-09-22 | 攀钢集团钢铁钒钛股份有限公司 | Digestion method and detection method for iron ore |
| CN101839828B (en) * | 2010-05-19 | 2011-11-09 | 攀钢集团钢铁钒钛股份有限公司 | Digestion method and detection method for iron ore |
| CN102718458A (en) * | 2012-07-03 | 2012-10-10 | 王国帅 | Process method for preparing steam-cured brick by molybdenum tailings |
| CN102718458B (en) * | 2012-07-03 | 2013-06-19 | 王国帅 | Process method for preparing steam-cured brick by molybdenum tailings |
| CN104289496A (en) * | 2014-09-19 | 2015-01-21 | 成都理工大学 | Method applied to treatment of vanadium-titanium slag |
| CN113121140A (en) * | 2021-03-08 | 2021-07-16 | 河南科技大学 | Method for preparing active admixture of color sand, roadbed stone and cement from molybdenum ore tailings |
| CN114669585A (en) * | 2022-03-14 | 2022-06-28 | 昆明理工大学 | Method for weathered soil and resource utilization of silicate material |
| CN114669585B (en) * | 2022-03-14 | 2023-11-10 | 昆明理工大学 | Silicate material weathering soil and resource utilization method |
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Open date: 20081029 |