CN107201232B - For the modifying agent of rare-earth tailing sand reparation and the administering method of rare-earth tailing sand - Google Patents
For the modifying agent of rare-earth tailing sand reparation and the administering method of rare-earth tailing sand Download PDFInfo
- Publication number
- CN107201232B CN107201232B CN201710470392.1A CN201710470392A CN107201232B CN 107201232 B CN107201232 B CN 107201232B CN 201710470392 A CN201710470392 A CN 201710470392A CN 107201232 B CN107201232 B CN 107201232B
- Authority
- CN
- China
- Prior art keywords
- rare
- modifying agent
- soil
- tailing sand
- sepiolite
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2109/00—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE pH regulation
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
It include: sepiolite, animal wastes, humic acid and charcoal the present invention provides a kind of modifying agent for rare-earth tailing sand reparation and the administering method of rare-earth tailing sand, the modifying agent；Wherein the mass ratio of sepiolite, animal wastes, humic acid and charcoal is (0.05~0.5): (0.05~0.3): (0.03~0.2): (0.04~0.3).The present invention is realized that the reparation to rare-earth tailing sand, the introducing of no chemical substance avoid the secondary hazards to soil, and the integrated application of modifying agent, is realized the raising to soil fertility with sepiolite, animal wastes, humic acid and charcoal coordinated.
Description
Technical field
The invention belongs to soil remediation technology fields, the more particularly, to modifying agent of rare-earth tailing sand reparation and rare earth tail
The administering method of ore in sand form.
Background technique
China is the most abundant country of rare earth resources, especially the ion type rareearth ore in south jiangxi area.Since early stage supervises
The influence that unordered and production practice falls behind, initial stage of production are mainly stripped using the in_situ leaching technique for being referred to as " removing mountain movement "
The vegetation of Rare Earth Mine Surface mulch extracts crude rare-earth original ore through note wellhole with solution such as ammonium sulfate, ammonium nitrate, after raw ore extracts
The discarded heap generated is referred to as tailing, and for the soil in a large amount of tailing accumulation place in acidity, pH is lower, so that soil nutrient content drops
Low, soil depletion, not even a blade of grass grows, causes serious soil erosion；And the leaching mine agent concentration that the technique uses is higher, generation
There is the higher sodium chloride of concentration in waste water, underground water can be polluted and be endangered by rainfall eluviation and naturally osmotic, even
Lead to mining soil salinization of soil；The plant in mining area is seriously damaged, so that mining soil fertility under the action of wind and rainwater declines,
The content of organic matter is extremely low, and soil becomes sand or only remains sand, quality of organic matter concentration, soil natural water content and moisture holding capacity
It is very low, the barren desertification of soil is caused, because production practice is special, the tailing generated after exploitation is caused by exploitation
Soil deterioration is badly in need of to the effective administration way of rare-earth tailing sand.
The common method of existing rare-earth tailing sand reparation has physical method and chemical method.Wherein, physical method refers to pair
Surface soil covering, including surface soil backfill and the covering of strange land mellow soil are carried out discardedly, but backfill the side of surface soil and the covering of strange land mellow soil
Method is administered at high cost and can only be used in the sufficient area of soil resource, and native source shortage, severe water and soil erosion are not particularly suited for
Ion type rareearth mining area.Chemical method uses modifying agent to repair rare-earth tailing sand, although without being limited by soil
The abundant degree of resource, but the application of existing modifying agent remains some shortcomings: natural amendments improved effect has
Limit, and have duration short problem；High cost and the potential risk of environmental pollution of artificial synthesized high-molecular compound and limit
Its extensive use is made；Contain inevitable harmful components in municipal sludge class modifying agent, exists to plant and microorganism
Harm.
Summary of the invention
In view of this, the purpose of the present invention is to provide modifying agents and rare-earth tailing sand for rare-earth tailing sand reparation
Administering method, modifying agent provided by the invention can be realized the improvement to the acidification of rare-earth tailing sand, and the modifying agent makes
With modification to rare-earth tailing sand is realized, increase soil fertility, herbal apply kind in conjunction with drought-enduring, it is ensured that vegetation repair it is same
When by remove, conversion and stabilization, the content of soil harmful substance is effectively reduced.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of modifying agents for rare-earth tailing sand reparation, comprising: sepiolite, animal wastes, rotten plant
Acid and charcoal；The sepiolite, animal wastes, humic acid and charcoal mass ratio be (0.05~0.5): (0.05~
0.3): (0.03~0.2): (0.04~0.3).
Preferably, the pH value of the sepiolite is 9~11；The mass percentage of organic matter is 0.75 in the sepiolite
~0.95%；The average pore size of the sepiolite is 1.2~1.5nm；The specific surface area of the sepiolite is 750~900m2/g。
Preferably, the sepiolite includes the component of following mass percentage: Mg3Si2(OH)4O57.5%~10%,
Si3O6·H2O 6%~10%, CaMg Si2O615%~20% and CaCO360~71.5%.
Preferably, the pH value of the animal wastes is 6.12~7.53；The content of organic matter is 50 in the animal wastes
~85g/kg；The content of nitrogen is 16~30g/kg in the animal wastes, in the animal wastes content of phosphorus be 8.2~
15.6g/kg, the content of potassium is 7.2~16g/kg in the animal wastes.
Preferably, the pH value of the humic acid is 4~6, in the humic acid mass percentage of organic matter be 65~
85%.
Preferably, the partial size of the charcoal is 2~5mm, and the specific surface area of the charcoal is 45.56~60.32m2/
g。
The present invention also provides a kind of administering methods of rare-earth tailing sand, comprising the following steps:
(1) modifying agent described in above-mentioned technical proposal is applied to rare-earth tailing sand；
(2) kind of a drought-enduring herbaceous plant is applied on the rare-earth tailing sand after the application modifying agent.
Preferably, the time interval that the modifying agent application applies kind with the drought-enduring herbaceous plant is 7~10 days.
Preferably, the amount of application of the modifying agent is counted on the basis of the area of rare-earth tailing sand to be repaired, the modifying agent
Amount of application be kg/ mus of (65~409).
Preferably, the drought-enduring herbaceous plant includes one of rye grass, paspalum notatum, Chinese pennisetum and Festuca Arundinacea or more
Kind.
The present invention provides a kind of modifying agents for rare-earth tailing sand reparation, comprising: sepiolite, animal wastes, rotten plant
Acid and charcoal；Wherein the mass ratio of sepiolite, animal wastes, humic acid and charcoal is (0.05~0.5): (0.05~
0.3): (0.03~0.2): (0.04~0.3).The present invention with sepiolite, animal wastes, humic acid and charcoal coordinated,
Realize that the reparation to rare-earth tailing sand, the introducing of no chemical substance avoid the secondary hazards to soil, and the synthesis of modifying agent
Using raising of the realization to rare-earth tailing sand fertility.Alkaline sepiolite to rare-earth tailing sand realize in and under the action of, animal
The organic matter of excrement, charcoal and humic acid to be rich in realizes the raising to soil nutrient, while animal wastes microorganism is living
Property it is big, realize the activation of active principle in rare-earth tailing sand, humic acid can be effectively reduced rare-earth tailing sand to phosphorus fixation, make
Obtain the Ca that water is insoluble in rare-earth tailing sand3(PO4)2, the hydrophosphate to be formed and dihydric phosphate are reacted with humic acid all
It is dissolved in water, is facilitated by the absorption of plant, and then improves the utilization rate of phosphorus.
The present invention also provides a kind of administering methods of rare-earth tailing sand, and the modifying agent is applied to rare earth tail first
Then ore in sand form applies kind of a drought-enduring herbaceous plant on the rare-earth tailing sand after the application modifying agent.Using for the modifying agent is real
It now to the modification of rare-earth tailing sand, increases soil fertility, herbal applies kind in conjunction with drought-enduring, it is ensured that lead to while vegetation repair
Removing, conversion and stabilization are crossed, the content of soil harmful substance is effectively reduced, gradually improves soil nutrient status, restores soil
Loamy texture and structure, promote mining area mesoclimate to be improved, realize the optimization of microenvironment.Embodiment the result shows that, through this
After the method that invention provides is completed to the improvement of soil, the biomass of plant reaches 1.058~1.499g/pet, organic in soil
Matter content reaches 1.5%~2.24%, and pH value reaches 6.128~6.820, and alkaline hydrolysis nitrogen content reaches 40.375~52.250mg/
Kg, available phosphorus content reach 29.831~37.710mg/kg；After method provided by the invention administers soil, soil
PH value increases by 35.88%~51.22%, and soil organic matter content amplification 650%~1020%, soil alkali-hydrolyzable nitrogen increases
34.47%~72.73%, soil available phosphorus increases by 231%~318%.
Specific embodiment
The present invention provides a kind of modifying agents for rare-earth tailing sand reparation, comprising: sepiolite, animal wastes, rotten plant
Acid and charcoal；The sepiolite, animal wastes, humic acid and charcoal mass ratio be (0.05~0.5): (0.05~
0.3): (0.03~0.2): (0.04~0.3).
In the present invention, the modifying agent includes sepiolite.In the present invention, the pH value of the sepiolite be preferably 9~
11, further preferably 9.5~10.5, more preferably 10.In the present invention, the quality percentage of organic matter contains in the sepiolite
Amount preferably 0.75~0.95%, further preferably 0.78~0.90%, more preferably 0.80~0.85%.In the present invention
In, cation exchange capacity (CEC) (CEC) is preferably 15~20cmol/kg in the sepiolite, further preferably 18cmol/kg.Institute
It states cation exchange capacity (CEC) to refer in pH value=7, li molal quantity of whole exchangeable cations contained in every kilogram of soil,
In the present invention, the exchangeable cation is preferably K+、Na+、Ca2+、Mg2+、NH4+、H+And Al3+One of or it is a variety of.
In the present invention, the average pore size of the sepiolite is preferably 1.2~1.5nm, further preferably 1.25~
1.35nm.In the present invention, the specific surface area of the sepiolite is preferably 750~900m2/ g, further preferably 800~
850m2/g.In the present invention, the sepiolite preferably includes the component of following mass percentage: Mg3Si2(OH)4O57.5%
~10%, Si3O6·H2O 6%~10%, CaMg Si2O615%~20% and CaCO360~71.5%；Further preferably
For Mg3Si2(OH)4O59%, Si3O6·H2O 8%, CaMg Si2O617% and CaCO366% or Mg3Si2(OH)4O58%,
Si3O6·H2O 7%, CaMg Si2O615% and CaCO370%.In the present invention, the sepiolite has good absorption
Property, mobility and catalytic.
In the present invention, the sepiolite is a kind of silicate clay mineral of threadiness, has huge specific surface area,
With good absorption property, the soil particle to desertify can be made to be adsorbed on mineral material, thus form blocky or graininess,
The formation of blocky or granular soil helps to improve the porosity of soil, and then reinforced soil retain water and nutrients ability.
The present invention does not have particular/special requirement to the source of the sepiolite, using well-known to those skilled in the art.
In an embodiment of the present invention, the sepiolite is specifically purchased from Hebei province Lingshou County Peng Zhan Mineral Products Trade Co., Ltd.
In the present invention, the modifying agent includes animal wastes, and the animal wastes are preferably chicken manure or pig manure.In this hair
In bright, the pH value of the animal wastes is preferably 6.12~7.53, and further preferably 6.23~7.0, more preferably 6.5.?
In the present invention, the content of organic matter is preferably 50~85g/kg in the animal wastes, further preferably 55~80g/kg, more
Preferably 63.2~70g/kg.In the present invention, the content of nitrogen is preferably 16~30g/kg in the animal wastes, further excellent
It is selected as 18~25g/kg, more preferably 20g/kg.In the present invention, in the animal wastes content of phosphorus be preferably 8.2~
15.6g/kg, further preferably 9~13g/kg, more preferably 10g/kg.In the present invention, potassium contains in the animal wastes
Amount is preferably 7.2~16g/kg, further preferably 8~15g/kg, more preferably 10~12g/kg.
The present invention does not have particular/special requirement to the partial size of the animal wastes；In an embodiment of the present invention, the animal excreta
Just partial size is preferably 3~10mm, further preferably 3.5~5mm.The present invention preferably carries out raw animal excrement to grind place
Reason, the present invention are not had particular/special requirement to the mode ground, are ground using animal wastes well-known to those skilled in the art
Mode helps preferably to utilize nutrient with soil mixed process.
In the present invention, the animal wastes are preferably prepared according to method comprising the following steps: by raw animal
Excrement successively carries out compost maturity, air-dries and crush.In the present invention, the moisture of the compost maturity be preferably 60~
65wt%, further preferably 62~63wt%；The time of the compost maturity is preferably 30~45 days, further preferably 35
~40 days；The temperature of the compost maturity is preferably 65~70 DEG C；The compost maturity preferably carries out under air-proof condition.This hair
The bright concrete operations mode to the compost maturity does not have particular/special requirement, using compost maturity well-known to those skilled in the art
Mode.In the present invention, described to air-dry preferably natural air drying, the temperature of the natural air drying is preferably 25~30 DEG C；
The present invention does not have particular/special requirement to the time of the natural air drying, is can obtain animal wastes of the moisture content not higher than 10wt%
It is quasi-.The present invention does not have particular/special requirement to the time of the crushing, can obtain the animal wastes of target grain size.The present invention couple
The mode of the crushing does not have particular/special requirement, using animal wastes grinding mode well-known to those skilled in the art.
In the present invention, the use of the animal wastes can effectively improve the content of the basic nutrient of soil N P, K, change
Good soil fertility, while the introducing of chemical substance is avoided, chemical products is reduced to the secondary injury of soil；And in animal wastes
The multiple-microorganism being rich in is conducive to the activity for improving Mine Abandoned Land microorganism；The substance in soil can also be promoted to recycle,
Nutrient availability is improved, and then is conducive to plant growth and development.
The present invention does not have particular/special requirement to the source of the animal wastes, is using well-known to those skilled in the art
It can.In an embodiment of the present invention, the chicken manure is purchased from the flower nursery Beijing Jing Sheng soil and fertilizer section.
In the present invention, the modifying agent includes humic acid.In the present invention, the pH value of the humic acid be preferably 4~
6, further preferably 4.5~5.5, more preferably 5.In the present invention, in the humic acid organic matter mass percentage
Preferably 65~85%, further preferably 70~78%, more preferably 72~75%.In the present invention, the humic acid exists
Quality under dry state state is 40~50% of quality under humic acid hygrometric state state, further preferably 42~48%.In this hair
In bright, cation exchange capacity (CEC) (CEC) is preferably not lower than 250meq/100g in the humic acid, further preferably 300~
500meq/100g。
In the present invention, the partial size of the humic acid is preferably 1~5mm, further preferably 2~3mm.The present invention is to institute
The source for stating humic acid does not have particular/special requirement, is prepared using method well-known to those skilled in the art or using this field
Commercial product known to technical staff.In the present invention, when using method well-known to those skilled in the art preparation,
The humic acid is preferably obtained through extracting in weathered coal.When using commercial product well-known to those skilled in the art, at this
In the embodiment of invention, the humic acid is specifically purchased from Lvliang City magnificence Biological Development Co., Ltd.
In the present invention, rare-earth tailing sand structure can be changed in the humic acid, reduces rare-earth tailing sand to titanium pigment
It is fixed, the utilization rate of phosphate fertilizer is improved, the activation of rare-earth tailing sand microelement is promoted, the hydrophosphate formed after humic acid is added
Water can be dissolved in dihydric phosphate to be absorbed by plants；Can also interacting with the calcium ion in rare-earth tailing sand, it is cotton-shaped heavy to be formed
The gelinite in shallow lake can increase the hole of soil, improve the energy of soil water-reataining fertilizer-keeping sandy soil granular cementation together
Power；And the acid of humic acid can be neutralized with the alkalinity of saline-alkali soil, so the pH value of rare-earth tailing sand is adjusted in humic acid, be reached
The effect saline and alkaline to improvement.
In the present invention, the modifying agent includes charcoal.In the present invention, the partial size of the charcoal be preferably 2~
5mm, further preferably 2.5~4.5mm, more preferably 3mm.In the present invention, the specific surface area of the charcoal is preferably
45.56~60.32m2/ g, further preferably 50.22~58m2/ g, further preferably 55m2/g。
In the present invention, the pH value of the charcoal is preferably 7~9, and further preferably 7.2~8.5, more preferably
8.12.In the present invention, the charcoal preferably includes the component of following mass parts: 50.05~65.53 parts of C, H 1.05~
3.12 parts, 1.01~2.22 parts of N, 15.32~18.56 parts of O, 9.01~12.9 parts of full potassium and complete 2.55~2.74 parts of phosphorus.
In the present invention, the charcoal preferably includes 50.5~65.53 parts of C, further preferably 55~60 parts；It is described
Charcoal preferably includes 1.05~3.12 parts of H, further preferably 1.5~3 parts, more preferably 2.36 parts；The charcoal is excellent
Choosing includes 1.01~2.22 parts of N, further preferably includes 1.5~2 parts；The charcoal preferably includes 15.32~18.56 parts of O,
It further preferably include 16~17.45 parts of O；The charcoal preferably includes 9.01~12.9 parts of full potassium, further preferably includes
10~11.01 parts；The charcoal preferably includes 2.55~2.74 parts of full phosphorus, further preferably includes 2.64~2.7 parts.
In the present invention, the charcoal preferably includes the coarse ash of 1.01~2.67wt%, further preferably 1.2~
2.0wt%.In the present invention, the evaluation index for the feeding quality that the coarse ash is well known to those skilled in the art.
The present invention does not have particular/special requirement to the source of the charcoal, using method system well-known to those skilled in the art
It is standby to obtain or using commercial product well known to those skilled in the art.In the present invention, when using those skilled in the art
When prepared by known method, corn stover is preferably crushed after oxygen free condition high temperature pyrolysis and is obtained by the charcoal；It is described
The temperature of high temperature pyrolysis is preferably 500~600 DEG C, further preferably 520~580 DEG C, more preferably 550 DEG C；The high temperature
The time of pyrolysis is preferably 6~7h, further preferably 6.2~6.8h, more preferably 6.5h.Side of the present invention to the crushing
Formula does not have particular/special requirement, and straw well-known to those skilled in the art is used to crush mode can obtain the life of target grain size
Object charcoal.When using commercial product well-known to those skilled in the art, in an embodiment of the present invention, the humic acid
Specifically it is purchased from this rich biotech inc of Shandong.
In the present invention, the mass ratio of the sepiolite, animal wastes, humic acid and charcoal is (0.05~0.5):
(0.05~0.3): (0.03~0.2): (0.04~0.3), further preferably (0.1~0.4): (0.1~0.2): (0.05~
0.15): (0.1~0.2), more preferably 0.2:0.15:0.1:0.15.
The preparation method of present invention modifying agent described in above-mentioned technical proposal does not have special restriction, using art technology
The technical solution of the preparation of composition known to personnel, specifically: by the sepiolite, animal wastes, humic acid and life
The mixing of object charcoal, obtains the modifying agent of rare-earth tailing sand reparation.The present invention is excellent preferably with packed form storage by the mixture
Every bag of 50kg is selected, metering when convenient for application.
The present invention also provides the administering methods of rare-earth tailing sand, comprising the following steps:
(1) modifying agent described in above-mentioned technical proposal is applied to rare-earth tailing sand；
(2) kind of a drought-enduring herbaceous plant is applied on the rare-earth tailing sand after the application modifying agent.
In an embodiment of the present invention, the mass percentage of organic matter is preferably 0.1 in rare-earth tailing sand to be repaired
~0.3%, further preferably 0.2%；The content of alkali-hydrolyzable nitrogen is preferably 20~32mg/ in the rare-earth tailing sand to be repaired
Kg, further preferably 25~30mg/kg；The content of available phosphorus is preferably 5~10mg/ in the rare-earth tailing sand to be repaired
Kg, further preferably 8~9.01mg/kg；The content of the rare-earth tailing sand effective K to be repaired is preferably 40~52mg/
Kg, further preferably 45~50mg/kg；In the rare-earth tailing sand to be repaired the content of exchangeable calcium be preferably 30~
42mg/kg, further preferably 35~41mg/kg；The content of exchangeable magnesium is preferably 35 in the rare-earth tailing sand to be repaired
~45mg/kg, further preferably 40~41mg/kg；The pH value of the rare-earth tailing sand to be repaired is preferably 3~5, further
Preferably 3.2~4.51, more preferably 3.5~3.8.
Modifying agent described in above-mentioned technical proposal is applied to the rare-earth tailing sand by the present invention.In the present invention, described
The amount of application of modifying agent is preferably counted on the basis of the area of rare-earth tailing sand to be repaired, and the amount of application of the modifying agent is preferably
Kg/ mus of (65~409), further preferably kg/ mus of (105~385), more preferably kg/ mus of (205~295).
In the present invention, the application depth of the modifying agent is not less than 10cm, further preferably 11~25cm, more preferably
For 20cm.In the present invention, the restriction of the application depth of the modifying agent facilitates modifying agent to the improvement work of rare-earth tailing sand
It avoids modifying agent from being directly exposed to upper soll layer with while performance, causes the volatilization that component acts in modifying agent, and then weaken
Improved effect.The present invention does not have particular/special requirement to the method for application of the modifying agent, and use is well-known to those skilled in the art
Soil application mode.
After the modifying agent is applied to the rare-earth tailing sand, rare-earth tailing of the present invention after the application modifying agent
Kind of a drought-enduring herbaceous plant is applied on sand.In the present invention, the application modifying agent and the time interval applied between kind of plant are preferred
It is 7~10 days, further preferably 8~9 days；In the time interval, after the present invention is completed to the application modifying agent
The curing of soil facilitates adjusting of the modifying agent to rare-earth tailing sand.
In the present invention, it is preceding wet to the rare-earth tailing sand progress that applied modifying agent to apply kind for the drought-enduring herbaceous plant
Change processing provides moisture support so that the water content of soil is preferably 15~20wt% for drought-enduring herbal kind of applying.
In the present invention, drought-enduring herbaceous plant preferably includes in rye grass, paspalum notatum, Chinese pennisetum, vetiver and Festuca Arundinacea
It is one or more.The present invention does not have particular/special requirement to the drought-enduring herbal source, using those skilled in the art institute
It is well known.In the present invention, the drought-enduring Herb Root is flourishing, and biomass is big, and drought-resistant ability is strong, can be dilute
The soil that native CHARACTERISTICS OF TAILINGS SAND is destroyed applies kind, facilitates the reparation of vegetation；The drought-enduring herbaceous plant is with excellent growth adaptation ability
Ensure to pass through removing, conversion and stabilization while vegetation repair, the content of soil harmful substance is effectively reduced, gradually improves
Soil nutrient status restores the soil texture and structure, promotes mining area mesoclimate to be improved, realize the optimization of microenvironment.
In the present invention, drought-enduring herbal kind of the mode of applying preferably sows seed or transplanting seedling.In this hair
In bright, when applying the drought-enduring herbaceous plant of kind in a manner of sowing seed, it is preferred to use drilling；The line-spacing of the drilling is preferably 11
~20cm, further preferably 15~18cm；The amount of sowing of seed is preferably 0.8~1 kg/acre.In the present invention, when will plant
Son is sowed after soil surface, preferably 1~2cm of earthing；The earthing preferably uses rake to carry out.
When applying kind of drought-enduring herbaceous plant in a manner of transplanting seedling, described drought-enduring herbal to apply kind of density preferred
For 30~80 plants/m2, further preferably 35~60 plants/m2, more preferably 40~50 plants/m2.The line-spacing applied kind is preferably
30~50cm, further preferably 35~45cm；The spacing in the rows for applying kind is preferably 20~30cm, further preferably 25~
28cm.In the present invention, drought-enduring herbal kind of the mode of applying is preferably that strip applies kind；The strip applies the line space of kind
Preferably 11~20cm, further preferably 15~18cm.
It is described apply kind after, the present invention preferably waters to soil, and the amount of the watering is can ensure that the moisture content of soil
Subject to 15~20wt%.
Below with reference to embodiment to the modifying agent and rare-earth tailing sand provided by the present invention for rare-earth tailing sand reparation
Administering method is described in detail, but they cannot be interpreted as limiting the scope of the present invention.
Following embodiment and the middle soil of comparative example pick up from Jiangxi Province Xunwu County and discard rare-earth mining area.Soil physics and chemistry substantially
Matter is as shown in table 1.Soil is air-dried and crosses 2mm sieve after being lower than 10% to moisture content, it is spare.
The soil fertility factors situation table of 1 mining area to be repaired soil of table
Embodiment 1
The preparation of modifying agent: 4 parts of sepiolite, 3 parts of chicken manure, 2 parts and 2 parts of charcoal of humic acid.
Wherein sepiolite pH value is 10.5, organic matter 0.95%, CEC18cmol/kg, aperture 1.35nm, specific surface
Product is big, up to 900m2/g；Group is divided into Mg3Si2(OH)4O59%, Si3O6·H2O 8%, CaMg Si2O617% and CaCO3
66%；
Chicken manure pH value is 6.23, content of organic matter 63.2gkg-1, N, P, K are respectively 16gkg-1、7.3g·kg-1、
6.2g·kg-1；
Humic acid is that pH value is 4.0, organic matter (in terms of butt) 65%, humic acid (butt) 40%, CEC≤250meq/
100g, partial size 5mm.
Charcoal partial size is 2mm, specific surface area 50.22m2/ g, pH value 7.Charcoal component: C 75.22%, H
2.36%, N 1.01%, O 17.45%, full potassium 11.01% and full phosphorus 2.64%, wherein cinder is divided into 2.67wt%.
Simulated experiment is carried out indoors, is arranged in China Environmental Science Research Institute greenhouse, and warm room temperature control is 22
DEG C, simulating flowerpot diameter used is 10.3cm, high 7.2cm.Each flowerpot fills 2kg soil, weighs aforementioned spare soil improvement
Soil conditioner and soil are sufficiently converged uniformly, soil moisture content are maintained to reach field moisture content 15wt%, balanced by agent 11g
One week.Uniform broadcasting 1g ryegrass seed in every basin.Watering is deionized water in whole experiment process, and maintains 15% soil
Water content.
Keep light application time in 14h with light compensating lamp daily.Harvested after plant growth 60d, and to soil and plant sample into
Row analysis.
Testing result is the biomass of rye grass: 1.499g/pet, and modified soil with organic matter percentage composition is
2.24%；PH value: 6.820；Alkali-hydrolyzable nitrogen: 52.250mg/kg；Available phosphorus: 37.710mg/kg.
Embodiment 2
The preparation of modifying agent: 4 parts of sepiolite, 3 parts of chicken manure, 2 parts and 2 parts of charcoal of humic acid.
Wherein sepiolite pH value is 9.8, organic matter 0.83%, CEC15cmol/kg, aperture 1.30nm, specific surface area
Greatly, up to 900m2/g；Group is divided into Mg3Si2(OH)4O58%, Si3O6·H2O 10%, CaMg Si2O615% and CaCO3
67%；
Chicken manure pH value is 6.5, content of organic matter 65.8gkg-1, N, P, K are respectively 20gkg-1、8.3g·kg-1、
11.5g·kg-1；
Humic acid is that pH value is 5.5, organic matter (in terms of butt) 73%, and butt humic acid is hygrometric state humic acid quality
40%, CEC≤300meq/100g, partial size 4.5mm.
Charcoal partial size is 2.8mm, specific surface area 60.30m2/ g, pH value 8.0.Charcoal component: C 57.23%,
H 2.36%, N 1.9%, O 17%, full potassium 10.67% and full phosphorus 2.68%, wherein cinder is divided into 1.32wt%.
Simulated experiment is carried out indoors, is arranged in China Environmental Science Research Institute greenhouse, and warm room temperature control is 23
DEG C, simulating flowerpot diameter used is 8.2cm, high 5.6cm.Each flowerpot fills 1kg soil, weighs aforementioned spare soil conditioner
6g sufficiently converges soil conditioner and soil uniformly, and soil moisture content is maintained to reach field moisture content 15wt%, balance one
Week.Uniform broadcasting 0.8g paspalum notatum seed in every basin.Watering is deionized water in whole experiment process, and maintains 15% soil
Water content.
Keep light application time in 15h with light compensating lamp daily.Harvested after plant growth 60d, and to soil and plant sample into
Row analysis.
Testing result is the biomass of paspalum notatum: 1.34g/pet, and modified soil with organic matter percentage composition is
2.18%；PH value: 6.50；Alkali-hydrolyzable nitrogen: 51.33mg/kg；Available phosphorus: 36.56mg/kg.
Embodiment 3
The preparation of modifying agent: 5 parts of sepiolite, 3 parts of chicken manure, 2 parts and 3 parts of charcoal of humic acid.
Wherein sepiolite pH value is 9.8, organic matter 0.83%, CEC15cmol/kg, aperture 1.25nm, specific surface area
Greatly, up to 900m2/g；Group is divided into Mg3Si2(OH)4O58%, Si3O6·H2O 10%, CaMg Si2O615% and CaCO3
67%；
Chicken manure pH value is 7.5, content of organic matter 80.5gkg-1, N, P, K are respectively 20gkg-1、8.3g·kg-1、
11.5g·kg-1；
Humic acid is that pH value is 5.5, organic matter (in terms of butt) 73%, and dry state humic acid is hygrometric state humic acid quality
40%, CEC≤300meq/100g, partial size 4.5mm.
Charcoal partial size is 2.8mm, specific surface area 60.30m2/ g, pH value 8.0.Charcoal component: C 57.23%,
H 2.36%, N 1.9%, O 17%, full potassium 10.67% and full phosphorus 2.68%, wherein cinder is divided into 1.32wt%.
Simulated experiment is carried out indoors, is arranged in China Environmental Science Research Institute greenhouse, and warm room temperature control is 23
DEG C, simulating flowerpot diameter used is 8.2cm, high 5.6cm.Each flowerpot fills 1kg soil, weighs aforementioned spare soil conditioner
13g sufficiently converges soil conditioner and soil uniformly, and soil moisture content is maintained to reach field moisture content 20wt%, balance one
Week.
Uniform broadcasting 0.8g Chinese pennisetum seed in every basin.Watering is deionized water in whole experiment process, and is maintained
15% soil moisture content.
Keep light application time in 15h with light compensating lamp daily.Harvested after plant growth 60d, and to soil and plant sample into
Row analysis.
Testing result is the biomass of Chinese pennisetum: 1.49g/pet, and modified soil with organic matter percentage composition is
2.24%；PH value: 6.82；Alkali-hydrolyzable nitrogen: 52.25mg/kg；Available phosphorus: 37.6mg/kg.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of modifying agent for rare-earth tailing sand reparation, comprising: sepiolite, animal wastes, humic acid and charcoal；It is described
Sepiolite, animal wastes, humic acid and charcoal mass ratio be (0.05~0.5): (0.05~0.3): (0.03~0.2):
(0.04~0.3)；The partial size of the animal wastes is 3~10mm；
The physicochemical property of the rare-earth tailing sand is as follows: the mass percentage of organic matter is 0.1~0.3%, and alkali-hydrolyzable nitrogen contains
Amount is 20~32mg/kg, and the content of available phosphorus is 5~10mg/kg, and the content of available potassium is 40~52mg/kg, exchangeable calcium
Content is 30~42mg/kg, and the content of exchangeable magnesium is 35~45mg/kg, and pH value is 3~5；
The sepiolite includes the component of following mass percentage: Mg3Si2(OH)4O57.5%~10%, Si3O6·H2O6%
~10%, CaMgSi2O615%~20% and CaCO360~71.5%；The pH value of the sepiolite is 9~11；The sepiolite
The mass percentage of middle organic matter is 0.75~0.95%；The average pore size of the sepiolite is 1.2~1.5nm；The sea
The specific surface area of afrodite is 750~900m2/g；
The pH value of the animal wastes is 6.12~7.53；The content of organic matter is 50~85g/kg in the animal wastes；Institute
The content for stating nitrogen in animal wastes is 16~30g/kg, and the content of phosphorus is 8.2~15.6g/kg in the animal wastes, described dynamic
The content of potassium is 7.2~16g/kg in object excrement；
The pH value of the humic acid is 4~6, and the mass percentage of organic matter is 65~85% in the humic acid；
The partial size of the charcoal is 2~5mm, and the specific surface area of the charcoal is 45.56~60.32m2/g。
2. a kind of administering method of rare-earth tailing sand, comprising the following steps:
Modifying agent described in claim 1 is applied to rare-earth tailing sand；
Kind of a resistance to early herbaceous plant is applied on the rare-earth tailing sand after the application modifying agent；
The application depth of the modifying agent is not less than 10cm.
3. administering method according to claim 2, which is characterized in that the modifying agent application and the resistance to early herbaceous plant
The time interval for applying kind is 7~10 days.
4. administering method according to claim 2, which is characterized in that the amount of application of the modifying agent is with rare earth tail to be repaired
It is counted on the basis of the area of ore in sand form, the amount of application of the modifying agent is kg/ mus of (65~409).
5. administering method according to claim 2, which is characterized in that the resistance to early herbaceous plant includes rye grass, hundred happinesses
One of grass, Chinese pennisetum and Festuca Arundinacea are a variety of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470392.1A CN107201232B (en) | 2017-06-20 | 2017-06-20 | For the modifying agent of rare-earth tailing sand reparation and the administering method of rare-earth tailing sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470392.1A CN107201232B (en) | 2017-06-20 | 2017-06-20 | For the modifying agent of rare-earth tailing sand reparation and the administering method of rare-earth tailing sand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107201232A CN107201232A (en) | 2017-09-26 |
| CN107201232B true CN107201232B (en) | 2019-10-15 |
Family
ID=59906999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710470392.1A Active CN107201232B (en) | 2017-06-20 | 2017-06-20 | For the modifying agent of rare-earth tailing sand reparation and the administering method of rare-earth tailing sand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107201232B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108641722B (en) * | 2018-05-22 | 2020-05-05 | 江西农业大学 | Soil improvement method for rare earth tailings |
| CN108795440B (en) * | 2018-06-28 | 2020-07-31 | 山东大学 | Iron tailing soil conditioner and iron tailing soil improvement method |
| CN109054858A (en) * | 2018-09-17 | 2018-12-21 | 中国地质大学（北京） | A kind of configuration and application method of dilute scattered non-ferrous metal tailings modifying agent |
| CN109174935A (en) * | 2018-09-20 | 2019-01-11 | 鞍钢集团矿业有限公司 | A method of tailing is planted using microbial bacterial agent and modifying agent and is afforested |
| CN109479674B (en) * | 2018-12-10 | 2021-09-21 | 铜仁学院 | Composite improved matrix for repairing antimony ore area tailing sand |
| CN110041941B (en) * | 2019-04-15 | 2021-04-23 | 中国矿业大学(北京) | Soil conditioner for fast curing of semi-crude soil and method for fast curing of semi-crude soil |
| CN110172004A (en) * | 2019-06-12 | 2019-08-27 | 赣州哈克生物科技有限公司 | A kind of ion type rareearth tailing soil conditioner and preparation method thereof |
| CN110423175A (en) * | 2019-08-08 | 2019-11-08 | 中国恩菲工程技术有限公司 | For improveing the modifying agent composition and modifying agent of rare-earth tailing sand |
| CN113698937B (en) * | 2020-05-22 | 2022-10-21 | 中国环境科学研究院 | Humic acid-earthworm-semicoke soil improvement technical method |
| CN113698938B (en) * | 2020-05-22 | 2022-12-20 | 中国环境科学研究院 | Humic acid-earthworm-semicoke soil improvement technical method |
| CN113519229B (en) * | 2021-07-13 | 2022-11-29 | 中铝广西有色稀土开发有限公司 | Reclamation and greening method for ionic rare earth mining area |
| CN114557260B (en) * | 2022-03-28 | 2023-04-21 | 郑州大学 | Phosphate-inhibition matrix soil based on phosphate tailings, and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103947326A (en) * | 2014-05-12 | 2014-07-30 | 中山大学 | Method for ionic rare earth mine tailing land improvement and vegetation reclamation |
-
2017
- 2017-06-20 CN CN201710470392.1A patent/CN107201232B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103947326A (en) * | 2014-05-12 | 2014-07-30 | 中山大学 | Method for ionic rare earth mine tailing land improvement and vegetation reclamation |
Non-Patent Citations (1)
| Title |
|---|
| 复合钝化剂对污灌区镉污染农田土壤的钝化效果研究;杨侨等;《应用化工》;20170610;第46卷(第6期);第1037-1041页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107201232A (en) | 2017-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107201232B (en) | For the modifying agent of rare-earth tailing sand reparation and the administering method of rare-earth tailing sand | |
| CN102618295B (en) | Soil improving substrate suitable for ecological restoration of mine and preparation method thereof | |
| CN107517727B (en) | Plateau vegetation restoration composition and plateau area vegetation restoration method | |
| CN107509406B (en) | Method for rapidly improving soil carbon sequestration capacity of industrial and mining wasteland | |
| CN108353563A (en) | A method of using waste be soil conditioner Desert Control soil | |
| CN107241926B (en) | Method for improving saline-alkali soil of Xinjiang | |
| CN105993259A (en) | Matrix material and restoration method for ecological restoration of gangue dump of mining area | |
| CN112897972A (en) | Solid waste based porous material, preparation and ecological restoration method for coal gangue dump | |
| CN103947326A (en) | Method for ionic rare earth mine tailing land improvement and vegetation reclamation | |
| CN104327858A (en) | Soil heavy metal compound stabilizer and method using soil heavy metal compound stabilizer for passivation of soil heavy metals | |
| CN104289506A (en) | Biological remediation method for soil polluted by cadmium, zinc, lead and copper ions | |
| CN105777424B (en) | Acid soil conditioner prepared from iron ore tailings and preparation method of acid soil conditioner | |
| CN106694541A (en) | Method for repairing heavy metal pollution tailings with charcoal-based slow release fertilizer and imperata cylindrica | |
| CN105646103A (en) | Silkworm excrement and shell ecologic acidic soil conditioner and preparation method thereof | |
| CN104774620A (en) | Compound conditioner for vanadium contaminated soil as well as preparation method and conditioning method of conditioner | |
| CN110452067A (en) | A kind of charcoal and its method for repairing karst mine soil | |
| CN102701873A (en) | Method for preparing compound fertilizer-conserving nutritional soil from anaerobic fermentation residue | |
| CN113861991B (en) | Building residue soil modifier prepared from kitchen waste, preparation method and application of building residue soil modifier | |
| CN108541522B (en) | Vegetation recovery method for acid mine waste dump | |
| KR101133542B1 (en) | Cultivation method for salt-affected soil | |
| CN112893430A (en) | Method for soil remediation by using coal-based solid waste remediation material | |
| CN115735461A (en) | Method for restoring ecology of mine wasteland by utilizing green manure plants and phosphate tailings | |
| CN103343010A (en) | Novel soil amendment | |
| CN106083246A (en) | A kind of saline land greening special fertilizer and preparation, application process | |
| CN112335366A (en) | Mining land soil reconstruction method based on soil inoculation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Long Inventor after: Hou Hong Inventor after: Yang Qiao Inventor after: Sun Zaijin Inventor before: Yang Qiao Inventor before: Hou Hong Inventor before: Zhao Long Inventor before: Sun Zaijin |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |