CN108668552A - A kind of ion type rareearth tailings ground modifying agent and its restorative procedure - Google Patents

A kind of ion type rareearth tailings ground modifying agent and its restorative procedure Download PDF

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Publication number
CN108668552A
CN108668552A CN201810338539.6A CN201810338539A CN108668552A CN 108668552 A CN108668552 A CN 108668552A CN 201810338539 A CN201810338539 A CN 201810338539A CN 108668552 A CN108668552 A CN 108668552A
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rare earth
modifying agent
soil
dyers
tailings
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Inventor
汤叶涛
袁鸣
仇荣亮
刘文深
刘畅
郭美娜
陈莺燕
游敏
晁元卿
王诗忠
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Sun Yat Sen University
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Sun Yat Sen University
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil
    • A01B79/02Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00Cultivation of specific crops or plants not otherwise provided for
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/10Reclamation of contaminated soil microbiologically, biologically or by using enzymes
    • B09C1/105Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K17/00Soil-conditioning materials or soil-stabilising materials
    • C09K17/14Soil-conditioning materials or soil-stabilising materials containing organic compounds only
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C2101/00In situ

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mycology (AREA)
  • Botany (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Microbiology (AREA)
  • Molecular Biology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)

Abstract

The invention discloses a kind of ion type rareearth tailings modifying agent and its restorative procedure, the present invention is using modifying agent improvement rare earth tailings mine and passes through the method for dyers' grapes Extraction of rare earth element.Soil a great number of elements content is promoted with making tailings, and the conductivity of soil, carbon-nitrogen ratio is also obviously improved.Total rare earth (TRE) concentration after plantation dyers' grapes in its rhizosphere soil solution decreased significantly, total organic carbon and organic nitrogen content, which have, to be obviously improved, the present invention provides a kind of new modifying agent and plant improvement pattern for the repairing and treating on rare earth tailings ground, and the pattern is to the soil improvement on rare earth tailings ground and reclaims and plays good effect.On the other hand, dyers' grapes growth is rapid, and biomass is big, and resistance is strong, high to Rare Earth Accumulation ability, can be recycled for later stage rare earth resourcesization and provide good basis.

Description

A kind of ion type rareearth tailings ground modifying agent and its restorative procedure
Technical field
The invention belongs to rare earth tailings recovery technique field is specifically a kind of the new and improved of rare earth tailings ground Method and the method for utilizing Rare Earth Accumulation plant extract recovering rare earth element.
Background technology
Ion type rareearth ore is the important strategic resource in China, mainly distribution Jiangxi Province of China, Guangdong Province, the Inner Mongol, The ground such as Fujian Province, Guangxi province and Hunan Province.The ion type rareearth ore reserves in Jiangxi Province account for the whole nation 40%, production index, Yield accounts for 70% or so of heavy rare earth in the whole nation, and the rare earth resources of Ganzhou City account for the 80.65% of entire Jiangxi Province.Ionic Most of rare earth is adsorbed in the form of ion on the clay minerals such as kaolin in rare earth tailings mine, and general abundance is relatively low.Clay Rare-earth cation on mineral is not easy to dissolve in second alcohol and water, but in strong electrolytic solution (such as NH4Ac, NH4Cl, (NH4)2SO4, NaCl etc.) ion exchange can occur and enter in solution.The mining time of Ganzhou City's ion type rareearth ore is long, Yield is more, and the Rare-earth Industry for local economic development and China has made great contribution.For a long time, ion type rareearth Mine is generally exploited using dump leaching process:The ore in sand form that rare earth is rich in the weathered layer of Biao Tu lower layers and half weathered layer is carried To dump leaching field, leached repeatedly with ammonium sulfate.Although the rare earth mother solution compared with horn of plenty can be obtained, something lost leaves a large amount of dilute Native tailings.A large amount of land resource is not only taken up to these tailings, is also easy to destroy surrounding area vegetation, causes serious water Soil is lost in.Another aspect, tailings remaining ammonium sulfate be easy to enter water body and farmland with soil erosion, cause water body With the sulfate radical in farmland and the pollution of ammonium ion and eutrophication.In addition, the rare earth metal in rare-earth tailing area is dense Spend higher, common high hundred times of the fresh water of mining area surrounding body middle rare earth concentration ratio.Give local ecological environment and residence to rare earth tailings The physical and mental health of the people brings serious harm.Therefore the reparation on the tailings ground of ion type rareearth ore is very urgent.
Compared with traditional physical chemistry restorative procedure, phytoremediation is a kind of soil remediation side of green high-efficient economy Formula.However, the phytoremediation research at present about rare earth tailings ground is less, the effect of common plant allows of no optimist, it is difficult to promote It utilizes.This team early-stage study shows that dyers' grapes biomass is big, and growth is rapid, and resistance is strong, has stronger rare earth element Accumulation ability.But it yet there are no it and repair the report on rare earth tailings ground.
Invention content
The technical problem to be solved by the present invention is to overcome the barren and physicochemical drawbacks on existing ion type rareearth tailings ground, The problem of physicochemical property is poor with aiming to solve the problem that rare earth tailings, and nutritive element content is low, and vegetation is difficult to grow, while promoting this skill Art provides material for later stage rare earth element resource utilization.
The purpose of the present invention is to provide a kind of rare earth tailings modifying agent and its restorative procedure.
The technical solution used in the present invention is:
A kind of modifying agent on rare earth tailings ground, by pig manure and sawdust by volume 1:1.5~2.5 compositions.
A kind of restorative procedure on rare earth tailings ground, by modifying agent described above, with rare earth tailings soil mixes, then plants Plant plant dyers' grapes.
A kind of restorative procedure on rare earth tailings ground, includes the following steps:
S1, by modifying agent described above, with rare-earth tailing soil mixes, and turns over;
Dyers' grapes seed is seeded in the soil of S1 by S2, watering;
S3, growth harvest dyers' grapes aerial part after at least 100 days, retain under ground portion.
Further, in step S1, modifying agent applied amount is 2~3kg/m2
Further, in step S1, the depth turned over is 8~15cm.
Further, in step S2, dyers' grapes seed sterilizes after being impregnated through water, is washed with water net rear for sowing.
Further, the time that the water impregnates is 3~5h, and temperature is 24~30 DEG C.
Further, the disinfection is to sterilize 8~12min with 12~17% hydrogenperoxide steam generators.
Further, disposable to water after sowing in step S2, it is pure water to water, and irrigation amount is 8~12L/ m2, do not rewater later.
Further, thinning is carried out after sowing 10~18 days, makes to be divided into 12~19cm between plant.
The application of modifying agent and plant dyers' grapes in repairing ion type rareearth tailings ground, the modifying agent by pig manure and Sawdust in mass ratio 1:1.5~2.5 compositions.
The application of modifying agent and plant dyers' grapes in enrichment or/and recovering rare earth element, the modifying agent is by pig manure With sawdust in mass ratio 1:1.5~2.5 compositions.
Further, the rare earth element specifically includes lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu).
The beneficial effects of the invention are as follows:
The present invention provides a kind of new and improved dose for rare earth tailings, while providing a kind of new rehabilitation plant and repairing Complex pattern has reached improvement and has repaired the target on rare earth tailings ground.Meanwhile using common are machine waste as modifying agent, It derives from a wealth of sources, it is cheap, the cyclic utilization of waste is realized, solves its environmental problem that may be brought.In addition, dyers' grapes Strong with resistance, growth is rapid, and biomass is big, the characteristics of need not managing, while to the accumulation ability of rare earth element height, leading to It crosses and harvests its aerial part and can have larger economic benefit with recovering rare earth element, be worth promoting.
Description of the drawings
Soil liquid middle rare earth total concentration (A) (mg kg of Fig. 1 different experiments cells-1) and TOC/TNb contents (B) (mgL-1), Total REEs indicate total rare earth (TRE) concentration in figure.
The factor loading scatter plot of Fig. 2 BAPA group soil liquid principal component analysis, PC1:First principal component, PC2:Second Principal component, Rare Earth Elements:Rare earth element, Major elements:A great number of elements, Organic acids:Have Machine acid, TOC:Total organic carbon, TNb:Total organic carbon.
Fig. 3 P.americana respectively organize total rare earth concentration (mg kg-1) and chondrite normalized rare earth divide anomalous mode Formula;A is the rare earth total content planted in tissue root, stem, leaf, and B, C, D are respectively the content of each rare earth element in root, stem, leaf.
Total score anomalous mode formula (A) of Fig. 4 rare earth elements in soil-families of plant divides anomalous mode in bulk soil to Rhizosphere Soil Formula (B), from Rhizosphere Soil to the soil liquid divide anomalous mode formula (C), from the soil liquid to root divide anomalous mode formula (D), from root to Point different (E) of stem, point different (F) from stem to leaf portion.
Specific implementation mode
With reference to specific embodiment, the present invention is further illustrated.
Embodiment 1
(1) by tailings soil is mixed with modifying agent, and ploughed depth 8cm is sufficiently mixed, applied amount 2kg/m2, side Border low bank of earth between fields height is 15cm.
The modifying agent is by pig manure and sawdust by volume 1:1.5 composition.
(2) the dyers' grapes seed kind handled well is entered wherein, bar shaped sowing, bar shaped interval 30cm.
The dyers' grapes seed need to pass through warm water and impregnate 5h, later with 12% disinfectant with hydrogen peroxide 12min, it is pure Water is used to sow after cleaning.
(3) disposable watering after plant seeding, it is pure water, irrigation amount 8L/m to water2, do not rewater later.
(4) thinning after two weeks ensures to be spaced 12~19cm between plant strain.
It harvests plant after (5) 100 days, cuts aboveground vegetation part along soil surface when harvest, under ground portion retains.
Full open-air planting type is taken in above-mentioned all operations.
There are lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), terbium in soil to the tailings (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu) pollution.
Embodiment 2
(1) by tailings soil is mixed with modifying agent, and ploughed depth 12cm is sufficiently mixed, applied amount 3kg/m2, side Border low bank of earth between fields height is 15cm.
The modifying agent is by pig manure and sawdust by volume 1:2.5 composition.
(2) the dyers' grapes seed kind handled well is entered wherein, bar shaped sowing, bar shaped interval 30cm.
The dyers' grapes seed need to pass through warm water and impregnate 3h, later with 17% disinfectant with hydrogen peroxide 8min, it is pure Water is used to sow after cleaning.
(3) disposable watering after plant seeding, it is pure water, irrigation amount 12L/m to water2, do not rewater later.
(4) thinning after two weeks ensures to be spaced 12~19cm between plant strain.
It harvests plant after (5) 100 days, cuts aboveground vegetation part along soil surface when harvest, under ground portion retains.
Full open-air planting type is taken in above-mentioned all operations.
There are lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), terbium in soil to the tailings (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu) pollution.
Embodiment 3
Experiment packet:
The present embodiment is experimental subjects with selecting Ganzhou City of Jiangxi Province Dingnan County Rare Earth Mine.Control group is not apply improvement The barren ground (B) of agent, does not apply modifying agent planting plants group (BPA), and experimental group is to apply modifying agent group (BA) and apply Modifying agent and planting plants group (BAPA).Some of which result is related to the Rhizosphere Soil in BAPA groups and Non-rhizosphere soil, uses respectively BAPA-R and BAPA-B is indicated, is related to the Rhizosphere Soil in BPA groups and Non-rhizosphere soil, respectively with BPA-R and BPA-B come table Show.Reference material and experimental group are five repetitions.
The rare earth tailings of this example modifying agent be pig manure and sawdust by volume 1:2 compositions, amount of application 2.6kg/ m2
The specific method is as follows for experimental group:
(6) by tailings soil is mixed with modifying agent, and ploughed depth 10cm is sufficiently mixed, applied amount 2.6kg/m2 (BA groups and BAPA groups), marginal low bank of earth between fields height is 15cm.
(7) for BAPA and BPA groups, the dyers' grapes seed kind handled well is entered wherein, bar shaped sowing, bar shaped interval 30cm.The dyers' grapes seed need to pass through warm water impregnate 4h, later with 15% disinfectant with hydrogen peroxide 10min, pure water For sowing after cleaning.
(8) disposable watering after plant seeding, it is pure water, irrigation amount 10L/m to water2, do not rewater later.
(9) thinning after two weeks ensures to be spaced 12~19cm between plant strain.
It harvests plant after (10) 120 days, cuts aboveground vegetation part, underground part code insurance along soil surface when harvest It stays.Rhizosphere Soil, Non-rhizosphere soil, modifying agent group soil, non-modifying agent group soil analysis test can be acquired simultaneously, while acquiring phase The soil liquid test answered, acquires whole strain dyers' grapes comparative analysis.
Full open-air planting type is taken in above-mentioned all operations.
Experimental result:
1. because BPA groups (not applying modifying agent planting plants group) plant cannot germinate and grow, therefore not doing about BPA below The analysis discussion of group.After planting dyers' grapes, a great number of elements such as Al, Ca, P of soil, S etc., which is obtained, significantly increases (table 1). Tailings the pH of soil be acid, the pH value of soil does not occur significantly to change after improvement, but its conductivity (EC), carbon Nitrogen ratio (TC/TN), which is obtained for, to be obviously improved (table 2).
A great number of elements concentration (mean+SD) [%W/W] in 1 different experiments cell of table
Different letters indicate that there are significant differences under identity element
The pH of 2 different community soil of table, EC and carbon-nitrogen ratio (TC/TN)
* indicating processing group, there are significant difference (P < 0.05) with blank group, and there are poles with blank group for * * expressions processing group Significant difference (P < 0.01)
2. compared with the soil liquid of blank group rare earth tailings, P.americana (dyers' grapes) is planted in BAPA-R groups Total rare earth (TRE) concentration significantly decreases (- 97.5%) (Figure 1A) in the soil liquid of its rhizosphere later, total organic carbon (TOC) and has Machine nitrogen (TNb) content, which significantly increases, has been respectively increased 475% and 321% (Figure 1B).Meanwhile planting soil after P.americana The pH value of solution is promoted from 5.39 to 6.34 (tables 3).Principal component analysis shows relative to blank group B, processing group BA, BAPA- Apparent variation has occurred in B, BAPA-R, and rare-earth elements La contributes maximum to blank group, and TOC (total organic carbon) and pH is to improvement The contribution of group is maximum (Fig. 2).
The pH of 3 different experiments cell B, BA, BAPA-B, the BAPA-R soil liquid of table
3.BAPA groups Central America Phytolacca acinosa can be colonized and grow in mining soil, and the rare earth element concentration of leaf portion is much larger than Root and stem can reach 2512mg kg-1, the rare earth concentration of root is 200~600mg kg-1(Fig. 3).Spherolite falls from the sky or outer space Respectively tissue all shows apparent LREE enrichment phenomenons to dyers' grapes after stone standardization, and it is different that all there is Ce negative anomalys and Eu to bear It often occurs as (Fig. 3).
Total score anomalous mode formula of the rare earth element in soil-families of plant is as shown in Figure 4 A, in order to clearly describe BAPA groups This soil plant system is divided into five processes by fractionation mode of the rare earth elements in soil plant system:1, non-root Border soil is to Rhizosphere Soil (Fig. 4 B);2, Rhizosphere Soil to the soil liquid (Fig. 4 C);3, the soil liquid to plant root (Fig. 4 D);4, plant Root is to stem (Fig. 4 E);5, plant stem to leaf portion (Fig. 4 F).The rare earth element Differentiation Features of five processes show rare earth member Element from Non-rhizosphere soil to Rhizosphere Soil during without significant change, from Rhizosphere Soil to the soil liquid during occur it is slight HREE is enriched with and apparent Eu normal anomalies phenomenon (Fig. 4 C).During from the soil liquid to plant root, rare earth point is different to be in Reveal apparent LREE enrichments and Ce negative anomalys and Eu negative anomalys (Fig. 4 D).Mistake from root to stem and from stem to leaf portion All occur apparent HREE enrichment phenomenons (Fig. 4 E, F) in journey.
In conclusion the present invention is using modifying agent improvement rare earth tailings mine and passes through the side of dyers' grapes Extraction of rare earth element Method.Soil a great number of elements content is promoted with making tailings, and the conductivity of soil, carbon-nitrogen ratio is also obviously improved.With do not improve Blank soil is compared, and is planted the total rare earth (TRE) concentration after dyers' grapes in its rhizosphere soil solution and be decreased significantly, total organic carbon and Organic nitrogen content, which has, to be obviously improved, while its pH value is promoted from 5.39 to 6.34.The content of rare earth of dyers' grapes leaf portion is aobvious It writes and is higher than root and stem, leaf portion total rare earth (TRE) is at concentrations up to 2512mg kg-1.Rare earth divides anomalous mode formula to show dyers' grapes overground part Tend to absorb heavy rare earth element (Gd to Lu).The above method provides one kind for the improvement on Rare Earth Mine tailings ground with restoration of the ecosystem New reparation pattern and vegetable material, this reparation pattern can not only improve the soil on tailings ground, pollution administration;Meanwhile it will Organic waste realizes the cyclic utilization of waste as the raw material of modifying agent;On the other hand, the dyers' grapes of plantation have very Good Extraction of rare eart effect, rare earth element resource utilization, which is utilized, prodigious economic value.
The above results show that the present invention by specific modifying agent and dyers' grapes connected applications, realizes good rare earth Accumulation ability, and divide anomalous mode formula to learn that its aerial part is more likely to absorb heavy rare earth by rare earth.Since heavy rare earth is than light Rare earth has the value of bigger, recycling dyers' grapes aerial part to have larger economic potential.In the present invention, because of parent soil material Light rare earth containing higher proportion, therefore its enrichment energy to heavy rare earth cannot be directly found out from dyers' grapes aerial part Power.
Therefore, the present invention provides a kind of new modifying agent and plant improvement mould for the repairing and treating on rare earth tailings ground Formula, the pattern is to the soil improvement on rare earth tailings ground and reclaims and plays good effect.On the other hand, dyers' grapes growth is fast Speed, biomass is big, and resistance is strong, high to Rare Earth Accumulation ability, can be recycled for later stage rare earth resourcesization and provide good base Plinth.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment Limitation, it is other it is any without departing from the spirit and principles of the present invention made by changes, modifications, substitutions, combinations, simplifications, Equivalent substitute mode is should be, is included within the scope of the present invention.

Claims (10)

1. a kind of modifying agent on rare earth tailings ground, which is characterized in that by pig manure and sawdust by volume 1:1.5~2.5 compositions.
2. a kind of restorative procedure on rare earth tailings ground, which is characterized in that by modifying agent described in claim 1 and rare earth tailings Soil mixes, then planting plants dyers' grapes.
3. a kind of restorative procedure on rare earth tailings ground according to claim 2, which is characterized in that include the following steps
S1, by modifying agent described in claim 1, with rare-earth tailing soil mixes, and turns over;
Dyers' grapes seed is seeded in the soil of S1 by S2, watering;
S3, growth harvest dyers' grapes aerial part after at least 100 days, retain under ground portion.
4. according to the method described in claim 3, it is characterized in that:In step S1, modifying agent applied amount is 2~3kg/m2
5. according to the method described in claim 3, it is characterized in that:In step S1, the depth turned over is 8~15cm.
6. according to the method described in claim 3, it is characterized in that:It is disposable to water after sowing in step S2, it is watered For pure water, irrigation amount is 8~12L/m2, do not rewater later.
7. according to the method described in claim 3, it is characterized in that:In step S2, sowing carries out thinning after 10~18 days, makes 12~19cm is divided between plant.
8. the application of modifying agent and plant dyers' grapes in repairing ion type rareearth tailings ground, the modifying agent is by pig manure and saw End in mass ratio 1:1.5~2.5 compositions.
9. the application of modifying agent and plant dyers' grapes in enrichment or/and recovering rare earth element, the modifying agent by pig manure and Sawdust in mass ratio 1:1.5~2.5 compositions.
10. application according to claim 9, it is characterised in that:The rare earth element specifically include lanthanum, cerium, praseodymium, neodymium, samarium, Europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium.
CN201810338539.6A 2018-04-16 2018-04-16 A kind of ion type rareearth tailings ground modifying agent and its restorative procedure Pending CN108668552A (en)

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CN109987973A (en) * 2019-03-13 2019-07-09 南京师范大学 A kind of awns beanstalk lime-ash RE microbial fertilizer and the application of the method and its production producing RE microbial fertilizer using rehabilitation plant awns beanstalk
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
CN111451260A (en) * 2020-05-21 2020-07-28 中山大学 Method for mining rare earth element plants by using pokeberry

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Publication number Priority date Publication date Assignee Title
CN109987973A (en) * 2019-03-13 2019-07-09 南京师范大学 A kind of awns beanstalk lime-ash RE microbial fertilizer and the application of the method and its production producing RE microbial fertilizer using rehabilitation plant awns beanstalk
CN109987973B (en) * 2019-03-13 2022-08-26 南京师范大学 Method for producing rare earth micro-fertilizer by using remediation plant dicranopteris pedata, dicranopteris pedata ash rare earth micro-fertilizer produced by method and application of dicranopteris pedata ash rare earth micro-fertilizer
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
CN111451260A (en) * 2020-05-21 2020-07-28 中山大学 Method for mining rare earth element plants by using pokeberry
CN111451260B (en) * 2020-05-21 2021-10-22 中山大学 Method for mining rare earth element plants by using pokeberry

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