CN106718269A - A kind of method that utilization iron tailings prepares Reclaimed Soil - Google Patents
A kind of method that utilization iron tailings prepares Reclaimed Soil Download PDFInfo
- Publication number
- CN106718269A CN106718269A CN201611072217.9A CN201611072217A CN106718269A CN 106718269 A CN106718269 A CN 106718269A CN 201611072217 A CN201611072217 A CN 201611072217A CN 106718269 A CN106718269 A CN 106718269A
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- Prior art keywords
- iron tailings
- reclaimed soil
- thoroughly decomposed
- mass fraction
- livestock
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
Abstract
The invention discloses a kind of method that utilization iron tailings prepares Reclaimed Soil, including：Iron tailings is collected respectively, the 4th be redeposited loess and organic materials, it is standby；It is redeposited loess and organic materials by 45~55 by iron tailings, the 4th:40~50:5 mass ratio is mixed, that is, obtain Reclaimed Soil；The organic materials is the sludge for becoming thoroughly decomposed of the livestock and poultry breeding industry discarded object or town domestic sewage treatment plant discharge become thoroughly decomposed.Utilization iron tailings of the invention prepares the method for Reclaimed Soil with iron tailings, sludge and animal waste as raw material prepares Reclaimed Soil; mine is not only afforested; and iron tailings and sludge the like waste are comprehensively utilized, and alleviate and land resource is covered, protect environment.
Description
Technical field
Reclaimed improving technology field the invention belongs to mine soil, and in particular to one kind prepares Reclaimed Soil using iron tailings
Method.
Background technology
Iron tailings is the solid waste of discharge in ore dressing process.According to incompletely statistics, the tail that the existing mine of China is stored up
Nearly 5,000,000,000 tons of ore deposit amount, year discharge mine tailing amount is up to more than 500,000,000 tons, only this steel mining company Nasal deviation year tailing disposal 580
Remaining ten thousand tons.The Tailings Dam for storing up mine tailing occupies substantial amounts of land resource, and because of required table soil source shortage of reclaiming, ecological recovery is difficult
Degree is big, it has also become the principal element of restriction mine development and recovery of ecologic environment in a mine.In addition, adding with Urbanization in China
Hurry up, the sludge quantity of town domestic sewage treatment plant discharge is increasing.Disposing a large amount of sludge also turns into China's difficulty urgently to be resolved hurrily
Topic.If dealt with improperly, the annual discharge of above-mentioned discarded object will largely cover land resource, or even serious dirt is caused to environment
Dye.
Therefore, it is necessary to develop a kind of method that utilization iron tailings prepares Reclaimed Soil, supported with iron tailings, sludge and livestock and poultry
Discarded object is grown for raw material prepares Reclaimed Soil.
The content of the invention
It is an object of the invention to provide a kind of method that utilization iron tailings prepares Reclaimed Soil, with iron tailings, sludge and poultry
Fowl breeding waste prepares Reclaimed Soil for raw material, has not only afforested mine, and obtain iron tailings and sludge the like waste
Comprehensive utilization, alleviates and land resource is covered, and protects environment.
The method that a kind of utilization iron tailings that the present invention is provided prepares Reclaimed Soil, comprises the following steps：
Step 1, collects iron tailings, the 4th is redeposited loess and organic materials respectively, standby；
Step 2, is redeposited loess and organic materials by 45~55 by iron tailings, the 4th:40~50:5 mass ratio is mixed
It is even, that is, obtain Reclaimed Soil；
The organic materials is becoming thoroughly decomposed for the livestock and poultry breeding industry discarded object that becomes thoroughly decomposed or the discharge of town domestic sewage treatment plant
Sludge.
Preferably, during above-mentioned utilization iron tailings prepares the method for Reclaimed Soil, iron tailings, the 4th are redeposited loess and organic
The mass ratio of material is 55:40:5.
Preferably, during above-mentioned utilization iron tailings prepares the method for Reclaimed Soil, the iron tailings is that monometallic class Anshan is high
Silicon type iron tailings.
Preferably, during above-mentioned utilization iron tailings prepares the method for Reclaimed Soil, monometallic class Anshan high-silicon type iron tail
Ore deposit is mainly quartz particles, and with feldspar and hornblend, SiO in the high-silicon type iron tailings of monometallic class Anshan2Mass fraction
>=75%.
Preferably, during above-mentioned utilization iron tailings prepares the method for Reclaimed Soil, the described 4th is that redeposited loess picks up from mine
Have an opencast mining of the subsoil of 0.7-0.9m below the topsoil peeled off.
Preferably, during above-mentioned utilization iron tailings prepares the method for Reclaimed Soil, during the 4th is redeposited loess, particle diameter is big
In mass fraction≤5% of the gravel of 2.0mm, mass fraction≤50% of the sand grains of 2-0.02mm particle diameters, particle diameter
Mass fraction >=25% of the sticking grain less than 0.002mm, mass fraction≤25% of moisture, pH is 6.0-8.0.
Preferably, during above-mentioned utilization iron tailings prepares the method for Reclaimed Soil, in terms of the dry weight of livestock and poultry breeding industry discarded object,
Mass fraction >=45% of organic matter in the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed；With the fresh livestock and poultry breeding industry discarded object for becoming thoroughly decomposed
Weight meter, mass fraction≤30% of moisture, pH value 6.0-8.0 in the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed.
Preferably, during above-mentioned utilization iron tailings prepares the method for Reclaimed Soil, it is characterised in that at town domestic sewage
The dry weight meter of the sludge for becoming thoroughly decomposed of reason factory discharge, mass fraction >=45% of organic matter in the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed；
In terms of the weight of the sludge of the fresh town domestic sewage treatment plant discharge become thoroughly decomposed, moisture in the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed
Mass fraction≤30%, pH value 6.0-8.0.
Compared with prior art, the method for the present invention has the advantages that：
Iron tailings is sand grains of the particle diameter in 0.02-2mm, the mineral needed for not only lacking organic matter and plant in the prior art
Nutrient, and water holding and fertilizer-preserving ability are extremely low；4th is redeposited loess because sticky content is high, although moisture holding capacity is extremely strong, but because
Glutinous weight, void fraction is unreasonable, and famine ventilation space, plant is difficult to grow；The sludge of sewage treatment plants discharge contains
Water is high, and quality is sticky, but the content of organic matter is high, and the nutrient needed for plant growth enriches.
It is of the invention to take full advantage of the advantage for stating three kinds of materials, realize advantage and disadvantage complementary.Using iron tailings, sludge and
Animal waste prepares Reclaimed Soil for mine reclamation, excellent topsoil is not used, but prepared with the method
Reclaimed Soil it is similar to the topsoil that mine is peeled off at aspects such as unit weight, porosity, organic matter and various nutrient contents, symbol
Mine reclamation is closed to earthing quality《Land reclamation quality control standard》(TD/T1036-2013) basic demand；Not only afforest
Mine, and comprehensively utilized the solid waste such as iron tailings and sludge, alleviate and land resource is covered, protect
Environment is protected.
Specific embodiment
The specific embodiment invented is described in detail below, it is to be understood that protection scope of the present invention is not received
The limitation of specific embodiment.The test method of unreceipted actual conditions in the following example, generally according to normal condition, or
According to the condition proposed by each manufacturer.
When embodiment provides number range, it should be appreciated that except non-invention is otherwise noted, two ends of each number range
Any one numerical value can select between point and two end points.Unless otherwise defined, in the present invention all technologies for using and
Scientific terminology is identical with the meaning that those skilled in the art of the present technique are generally understood that.Except the specific method, equipment used in embodiment,
Outside material, grasp and record of the invention according to those skilled in the art to prior art can also be used and this
Any method, equipment and material in the similar or equivalent prior art of method, equipment described in inventive embodiments, material come real
The existing present invention.
Embodiment 1
A kind of method that utilization iron tailings prepares Reclaimed Soil, comprises the following steps：
Step 1, collects iron tailings, the 4th is redeposited loess and organic materials respectively, standby；
Iron tailings is monometallic class Anshan high-silicon type iron tailings, takes from the Tailings Dam of this steel mining company Nasal deviation,
The loss on ignition of ore deposit CHARACTERISTICS OF TAILINGS SAND is 8.16 for 0.92%, pH, and moisture is 0.06%, predominantly quartz particles, and with a small amount of
Feldspar and hornblend, SiO in the high-silicon type iron tailings of monometallic class Anshan2Mass fraction >=75%.Coarse sand granule (0.2mm-2mm)
Mass fraction be 75.7%, the mass fraction 23.6% of fine sand (0.02mm-0.2mm), a small amount of flour sand grain, without sticking grain level
Particle；
Described 4th is the subsoil that redeposited loess picks up from 0.7-0.9m below the topsoil that mine strip mining transformation is peeled off, pH
It is 6.5；During 4th is redeposited loess, the mass fraction 22% of moisture, the mass fraction of gravel of the particle diameter more than 2.0mm≤
Mass fraction≤50% of the sand grains of 5%, 2-0.02mm particle diameter, the quality point of particle of the particle diameter less than 0.002mm
Number is 53.2%；
Organic materials is the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed, and the livestock and poultry breeding industry discarded object includes：The excrement of livestock and poultry,
Useless feed and the filoplume being scattered in urine, flushing waste water, breeding process；In terms of the dry weight of livestock and poultry breeding industry discarded object, become thoroughly decomposed
The mass fraction of organic matter is 45% in livestock and poultry breeding industry discarded object；With the weight of the fresh livestock and poultry breeding industry discarded object for becoming thoroughly decomposed
Meter, the mass fraction of moisture is that 30%, pH is 8.0 in the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed, and the livestock and poultry breeding industry for becoming thoroughly decomposed is discarded
The environmental quality of thing meets《Standard of soil environment quality》The requirement of (GB 15618-1995) three-level.
Step 2, by iron tailings, the 4th is redeposited loess and organic materials by 55 using machinery:40:5 ratio machinery is mixed
It is even, that is, obtain Reclaimed Soil.
Using internal diameter 30cm, the Plastic Drum of 45cm high carries out potted plant experiment, and 14 kilograms of Reclaimed Soil is filled per basin, is colonized 1 year
Raw false indigo, one Growing season 120cm long is high for false indigo, and Reducing sugar is good.
Embodiment 2
A kind of method that utilization iron tailings prepares Reclaimed Soil, comprises the following steps：
Step 1, collects iron tailings, the 4th is redeposited loess and organic materials respectively, standby；
Iron tailings takes place with embodiment 1；
4th is the subsoil of 0.7-0.9m below slide rock topsoil that redeposited loess is taken near Waitoushan ore deposit, and pH is
6.5；During 4th is redeposited loess, the mass fraction 21% of moisture, the mass fraction of particle of the particle diameter less than 0.002mm is
52.1%, organic matter is 12.5g/kg；
Organic materials takes from the sludge for becoming thoroughly decomposed of Benxi sewage treatment plants, in terms of dry weight, the livestock and poultry breeding industry for becoming thoroughly decomposed
The mass fraction of organic matter is 45% in discarded object；The weight of the sludge discharged with the fresh town domestic sewage treatment plant become thoroughly decomposed
Meter, the mass fraction of moisture is 30%, and pH value 8.0, the environmental quality of the sludge for becoming thoroughly decomposed meets《Standard of soil environment quality》(GB
15618-1995) the requirement of three-level
Step 2, by iron tailings, the 4th is redeposited loess and organic materials by 45 using machinery:50:5 ratio machinery is mixed
It is even, that is, obtain Reclaimed Soil.
The Reclaimed Soil that will be prepared is covered in dumping site flat 50cm thickness, transplant annual locust tree, seeding row spacing
120cm.Locust tree current growth is in great numbers, and plant height average out to 150cm, Reducing sugar is good.
We are measured to the actual parameter in Reclaimed Soil, and as a result as shown in table 1, organic matter contains in Reclaimed Soil
It is 1.49% to measure, and meets 4 grades of standards of national soil nutrient, and the content of alkali-hydrolyzable nitrogen is 76.71mg/kg, meets national soil nutrient 4
Level standard, the content of rapid available phosphorus is 215.49mg/kg, meets 1 grade of standard of national soil nutrient, and the content of available potassium is
158.3mg/kg, meets 2 grades of standards of national soil nutrient, can be used for the plantation culture of plant.
Constituent content in the Reclaimed Soil of table 1
| Reclaimed Soil | National standard (mg/kg) | |
| Organic matter | 1.49% | 1~2% is 4 grades of standards of soil nutrient |
| Alkali-hydrolyzable nitrogen | 76.71mg/kg | 60~90mg/kg soil nutrients, 4 grades of standards |
| Rapid available phosphorus | 215.49mg/kg | >40mg/kg is 1 grade of standard of soil nutrient |
| Available potassium | 158.3mg/kg | 150~200mg/kg is 2 grades of standards of soil nutrient |
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (8)
1. a kind of method that utilization iron tailings prepares Reclaimed Soil, it is characterised in that comprise the following steps：
Step 1, collects iron tailings, the 4th is redeposited loess and organic materials respectively, standby；
Step 2, is redeposited loess and organic materials by 45~55 by iron tailings, the 4th:40~50:5 mass ratio is mixed, i.e.,
Obtain Reclaimed Soil；
The organic materials is the sludge for becoming thoroughly decomposed of the livestock and poultry breeding industry discarded object or town domestic sewage treatment plant discharge become thoroughly decomposed.
2. the method that utilization iron tailings according to claim 1 prepares Reclaimed Soil, it is characterised in that iron tailings, the 4th
The mass ratio for being redeposited loess and organic materials is 55:40:5.
3. the method that utilization iron tailings according to claim 1 prepares Reclaimed Soil, it is characterised in that the iron tailings is
Monometallic class Anshan high-silicon type iron tailings.
4. the method that utilization iron tailings according to claim 3 prepares Reclaimed Soil, it is characterised in that the monometallic class
Anshan high-silicon type iron tailings is mainly quartz particles, and with feldspar and hornblend, in the high-silicon type iron tailings of monometallic class Anshan
SiO2Mass fraction >=75%.
5. the method that utilization iron tailings according to claim 1 prepares Reclaimed Soil, it is characterised in that the described 4th is secondary
Raw loess picks up from the subsoil of 0.7-0.9m below the topsoil that mine strip mining transformation is peeled off.
6. the method that utilization iron tailings according to claim 5 prepares Reclaimed Soil, it is characterised in that the 4th is secondary Huang
In soil, mass fraction≤5% of gravel of the particle diameter more than 2.0mm, the mass fraction of the sand grains of 2-0.02mm particle diameters
≤ 50%, particle diameter is less than mass fraction >=25% of the sticking grain of 0.002mm, mass fraction≤25% of moisture, and pH is
6.0-8.0。
7. the method that utilization iron tailings according to claim 1 prepares Reclaimed Soil, it is characterised in that with livestock and poultry breeding industry
The dry weight meter of discarded object, mass fraction >=45% of organic matter in the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed；With the fresh poultry become thoroughly decomposed
The weight meter of poultry breeding industry discarded object, mass fraction≤30% of moisture, pH value 6.0- in the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed
8.0。
8. the method that utilization iron tailings according to claim 1 prepares Reclaimed Soil, it is characterised in that dirty with urban life
The dry weight meter of the sludge for becoming thoroughly decomposed of water treatment plant's discharge, the mass fraction of organic matter in the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed >=
45%；In terms of the weight of the sludge of the fresh town domestic sewage treatment plant discharge become thoroughly decomposed, the livestock and poultry breeding industry discarded object for becoming thoroughly decomposed
Mass fraction≤30% of middle moisture, pH value 6.0-8.0.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611072217.9A CN106718269A (en) | 2016-11-29 | 2016-11-29 | A kind of method that utilization iron tailings prepares Reclaimed Soil |
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| CN201611072217.9A CN106718269A (en) | 2016-11-29 | 2016-11-29 | A kind of method that utilization iron tailings prepares Reclaimed Soil |
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| CN201611072217.9A Pending CN106718269A (en) | 2016-11-29 | 2016-11-29 | A kind of method that utilization iron tailings prepares Reclaimed Soil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863679A (en) * | 2018-09-20 | 2018-11-23 | 鞍钢集团矿业有限公司 | A kind of iron tailings soil organism modifying agent and its application |
| CN108901535A (en) * | 2018-06-27 | 2018-11-30 | 贵州松桃正大振兴生态农旅开发有限公司 | A kind of implantation methods of peach |
| CN109054860A (en) * | 2018-09-20 | 2018-12-21 | 鞍钢集团矿业有限公司 | A kind of modifying agent increasing the iron tailings gas permeability of soil |
| CN115669299A (en) * | 2022-11-17 | 2023-02-03 | 沈阳农业大学 | Reclamation soil with iron ore tailings as soil moisture preservation layer and construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108901535A (en) * | 2018-06-27 | 2018-11-30 | 贵州松桃正大振兴生态农旅开发有限公司 | A kind of implantation methods of peach |
| CN108863679A (en) * | 2018-09-20 | 2018-11-23 | 鞍钢集团矿业有限公司 | A kind of iron tailings soil organism modifying agent and its application |
| CN109054860A (en) * | 2018-09-20 | 2018-12-21 | 鞍钢集团矿业有限公司 | A kind of modifying agent increasing the iron tailings gas permeability of soil |
| CN115669299A (en) * | 2022-11-17 | 2023-02-03 | 沈阳农业大学 | Reclamation soil with iron ore tailings as soil moisture preservation layer and construction method |
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