CN104099100B - A kind of soil conditioner and preparation method thereof - Google Patents
A kind of soil conditioner and preparation method thereof Download PDFInfo
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- CN104099100B CN104099100B CN201410288820.5A CN201410288820A CN104099100B CN 104099100 B CN104099100 B CN 104099100B CN 201410288820 A CN201410288820 A CN 201410288820A CN 104099100 B CN104099100 B CN 104099100B
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Abstract
The present invention relates to a kind of soil conditioner and preparation method thereof, the soil conditioner includes reverse flotation phosphorus mine tailing through 800~1200 DEG C of calcinings, crushing and screenings, then takes the mesh particle of particle diameter≤50 to carry out the active phosphorus mine tailing that steam press maintenance processing is obtained, i.e. soil conditioner.Its preparation method is that calcined crushed is sieved at 800~1200 DEG C by reverse flotation phosphorus mine tailing；Then steam press maintenance 3~5 hours under the conditions of 170~180 DEG C, 0.8~1.0MPa；Obtain soil conditioner.Prepared soil conditioner fertilizer efficiency of the invention is high, available for the soil improvement in mine reclamation and scarce phosphorus area, with more wide application prospect, and without secondary pollution.
Description
Technical field
The invention belongs to soil improvement and solid waste reutilization technology field, it is related to a kind of soil conditioner and its system
Preparation Method.
Background technology
What in March, 2012 put into effect《" 12 " planning outline》By energy-conserving and environment-protective be classified as seven great strategy new industries it
It is first.Wherein, soil remediation is the row given priority in environmental protection industry, and clearly proposes to need to strengthen Soil Pollution Control supervision pipe
Reason.At this stage the method for soil restoration be broadly divided into physics, chemical and biological three class, be subdivided into following several：1. thermodynamics
Reparation, 2. thermal desorption reparations, 3. burning methods, 4. land fills, 5. chemical leachings, 6. composting processes, 7. phytoremediations, 8. infiltrations
It is reaction wall, 9 biological prosthetic.Wherein phytoremediation is such as to add soil conditioner with agricultural technology, improves soil and plant is given birth to
The restrictive condition of long unfavorable chemically and physically aspect, is allowed to be suitable to plantation, and micro- by planting preferred plant and its rhizosphere
Biological directly or indirectly absorption, volatilization, separation, degradation of contaminant, restoration and reconstruction natural ecological environment and vegetation landscape.Soil changes
Clearly, purposes is also very more for the effect of good dose of improved soil.
The raw material for preparing soil conditioner is very more, mainly has：Natural mineral matter, such as dolomite, gypsum, ground phosphate rock, boiling
Stone, montmorillonite powder, calcium silicate powder, olive stone flour, sulphur powder, lime or agstone, boron ore powder and zinc ore powder, peat；Agricultural is useless
Gurry, such as feces of livestock and poultry, crop material；Industry byproduct, such as alkaline cinder, blast furnace slag, flyash, gangue, yellow phosphorus ore deposit
Ground-slag, bean dregs (SM), sewage sludge etc.；Organic fertilizer, such as hog manure, leguminous green manure；City and domestic refuse, it is such as organic
Discarded object (swill, biosolids), building waste and life clinker and other house refuses etc.；Biomass, such as weeds, people
Biomass class plant (high oil corn, sorghum etc.) that work post is planted etc.；Artificial polymer, such as Polymer Synthesizing material, biological agent
Deng.
It there is problems at present using soil conditioner improved soil：(1) cost is high.Although commensurate does not research and develop
Product is a lot, but because cost is high (600~1800 yuan/m2) so that its popularization and application is constantly subjected to limitation；(2) raw material is researched and developed
It is single, and because technology problem causes product quality, effect, performance unstable.Raw material focuses mostly in natural and artificial conjunction
Into material, the exploitation to house refuse, biomass and trade waste are few, cause a large amount of cheap soil improvement raw material
Put aside as useless, and contaminated soil and water body etc..In view of problem above, need badly and find a kind of easy, economic phytoremediation type soil and change
Good dose, to solve the problems, such as barren or contaminatedground reparation.
Phosphorus mine tailing is the byproduct of phosphate rock resource exploitation, be discharge after mining do not made full use of waste material.I
State's phosphate Industry produces substantial amounts of phosphorus mine tailing and is deposited in fine sand shape in Tailings Dam every year.Fund is not only expended, and causes one
Serial environmental problem.China's reverse flotation phosphorus mine tailing existence form is mainly dolomite (CaMgCO3), wherein content of magnesia is general
17% or so, and contain a certain amount of P2O5, carefully, mine tailing granularity is general all below 200 mesh for mineral grain.Most area phosphorus
Content highest component and its content are about in mine tailing：Calcium oxide 34.11%, magnesia 17.65%, phosphorus pentoxide
5.30%, the main preservation in the form of dolomite of magnesium, and with the presence of on a small quantity with phosphate, silicate patterns, its institute in each phase
Accounting example is respectively 99.80%, 0.10%, 0.10%；Main preservation (the accounting for 97.08%) in the form of apatite of phosphorus, and have few
Amount exists with ferriferous oxide (1.04%), monazite (0.19%), xenotime (1.83%) form；The main shape with dolomite of calcium
Formula preservation (accounts for 96.95%), and with the presence of on a small quantity with calcite (1.11%), phosphate (1.94%) form.
The research and development both at home and abroad on phosphorus mine tailing mainly use phosphorus mine tailing to prepare some air entrained concrete and carry at present
Take the utilizable material in phosphorus mine tailing.Mainly have：(1) air entrained concrete is prepared using phosphorus mine tailing；(2) production mine tailing fertilizer
Material；(3) concrete aggregate and production Portland cement are made；(4) magnesium, rare earth element in extraction phosphorus mine tailing etc..
Phosphorus resource of tailings can be made full use of by the use of phosphorus mine tailing as raw material production soil conditioner, such as number of patent application is
A kind of method that 201310001658.X disclosure of the invention utilization phosphorus mine tailing and acid waste water prepare phosphate fertilizer soil conditioner, bag
Include following steps：(1) P is prepared2O5The phosphorus mine tailing ore pulp of content 10%~18% is used as raw material；(2) prepare be containing mass concentration
The acid waste water of 5%~10% sulfuric acid；(3) toward adding acid waste water in phosphorus mine tailing ore pulp so that acid waste water and phosphorus mine tailing ore deposit
Slurry mixing 10~15 minutes, forms mixed slurry, adjusts the tailing water pH value excluded to mixed slurry and is more than 6.8；(4) will discharge
The mixed slurry of tailing water was stored up by 6~12 months；(5) water content mass concentration having less than 10% is obtained after storing up
The soil conditioner of calcium magnesium phosphate effect, wherein activity P2O5Content is 7%~14%.The invention can realize phosphorous magnesium phosphorus mine tailing
With the recycling of acid waste water, the phosphorus in phosphorus mine tailing is largely converted into active P2O5, and soil containing calcium and magnesium changes
Good dose.But this method needs that mixed slurry is carried out to store up within 6~12 months, not only takes, and the requirement to place is big, row
The tailing water gone out causes secondary pollution to environment.
The content of the invention
The technical problems to be solved by the invention are to change for above shortcomings in the prior art there is provided a kind of soil
Good dose and preparation method thereof, the soil conditioner can not only largely consume using reverse flotation phosphorus mine tailing as primary raw material and utilize phosphorus
Mine tailing, and preparation technology is simply efficient, it is environmentally friendly, phosphate rock resource can be comprehensively utilized.
The technical scheme of soil conditioner of the present invention is：
Including reverse flotation phosphorus mine tailing through 800~1200 DEG C of calcinings, crushing and screenings, the mesh particle of particle diameter≤50 is then taken (with institute
It is suitable with soil particle) carry out the active phosphorus mine tailing that steam press maintenance processing is obtained, i.e. soil conditioner.
By such scheme, the calcining heat is 850~950 DEG C, calcination time >=1 hour.
By such scheme, the steam press maintenance is that steam press maintenance 3~5 is small under the conditions of 170~180 DEG C, 0.8~1.0MPa
When.
In order to improve the performance of soil conditioner of the present invention, also it can be added in reverse flotation phosphorus mine tailing steam press maintenance
His component such as silicon ash etc..
Further, above-mentioned soil conditioner also includes silicon ash, addition quality≤active phosphorus mine tailing quality of silicon ash
15%.
Further, above-mentioned soil conditioner also includes soil, quality≤active phosphorus mine tailing quality of the soil
84 times.The soil can be the mixture of gardens soil, fertile soil or both, naturally it is also possible to use required improvement ground
Soil is used as raw material.
Further, above-mentioned soil conditioner also includes ardealite and phosphorus slag, quality≤activity of the ardealite
11 times of phosphorus mine tailing quality, 4.5 times of quality≤active phosphorus mine tailing quality of the phosphorus slag.
Further, above-mentioned soil conditioner also includes perlite, quality≤active phosphorus mine tailing of the perlite
3 times of quality.
In addition, the fertility in order to improve above-mentioned soil conditioner, appropriate fertilizer can also be added wherein.
The preparation method of soil conditioner of the present invention comprises the following steps：
(1) calcine：Reverse flotation phosphorus mine tailing is calcined at 800~1200 DEG C；
(2) crushing and screening and steam press maintenance：Material after calcining is crushed, takes the particle of≤50 mesh to carry out steam press maintenance and obtains
To soil conditioner.
Preferably, described calcining heat is 850~950 DEG C, calcination time >=1 hour.
Preferably, described steam press maintenance is that steam press maintenance 3~5 is small under the conditions of 170~180 DEG C, 0.8~1.0MPa
When.
In order to improve the performance of soil conditioner of the present invention, also it can be added in reverse flotation phosphorus mine tailing steam press maintenance
His component such as silicon ash etc..
Further, the soil conditioner also includes silicon ash, addition quality≤active phosphorus mine tailing quality of silicon ash
15%.
Further, the soil conditioner also includes soil, quality≤active phosphorus mine tailing quality of the soil
84 times.
Further, the soil conditioner also includes ardealite and phosphorus slag, quality≤activity of the ardealite
11 times of phosphorus mine tailing quality, 4.5 times of quality≤active phosphorus mine tailing quality of the phosphorus slag.
Further, the soil conditioner also includes perlite, quality≤active phosphorus mine tailing of the perlite
3 times of quality.
In order to strengthen reclamation result, it can also add water and soil conditioner stirs, the addition quality of water is soil
The 20~25% of earth modifying agent quality.The wet mixing that adds water is conducive to the old homogenizing of various materials to react, and builds up fertility.Further
Ground, old homogenising time >=7 day are more beneficial for improving the activity of phosphorus component in soil conditioner after wet mixing, are allowed to be more easy to by plant
Absorb, and then improve reclamation result.
In the soil conditioner provided using the present invention, it is only necessary to which being laid on needs the soil surface improved i.e.
Can.
The beneficial effects of the present invention are：1st, soil conditioner of the present invention to be can largely utilize flotation phosphate mine tailing,
There is low cost, environmental protection, but also can largely, integrally consume the phosphorus such as reverse flotation phosphorus mine tailing, phosphorus slag and ardealite
Industry Waste Solid thing；2nd, soil conditioner application method of the present invention is simple, directly by soil conditioner be laid on it is contaminated or
Poor soil the earth's surface, it is not necessary to technological guidance is carried out to workmen, substantial amounts of human cost can be saved；3rd, institute of the present invention
State soil conditioner preparation technology simple, it is mild condition, with low cost, and secondary pollution is not resulted in preparation process, easily
It is easy to utilize in realization.
Brief description of the drawings
Fig. 1 is the XRD diffraction patterns of reverse flotation phosphorus mine tailing used in the embodiment of the present invention 1；
Fig. 2 is the XRD diffraction patterns of active phosphorus mine tailing prepared after the reverse flotation phosphorus mine tailing of embodiment 1 is calcined；
Fig. 3 is the process chart that embodiment 1 prepares soil conditioner.
Embodiment
To make those skilled in the art more fully understand technical scheme, the present invention is made below in conjunction with the accompanying drawings into
One step is described in detail.
Reverse flotation phosphorus mine tailing used in the embodiment of the present invention is derived from Yunnan Jinning County of phosphatization group phosphorus ore wheatland tailing dam, its
XRD diffracting spectrums can participate in accompanying drawing 1；Phosphorus slag is derived from the phosphorus slag produced by Yunnan phosphatization group Jinning County's Yellow Phosphorous Plant production yellow phosphorus；Institute
Yunnan phosphatization group Jinning County's phosphorus ore is derived from ardealite.Described above is only that only the source of phosphorus mine tailing, phosphorus slag and ardealite is entered
Row explanation, is not constituted to present invention limitation, other regional such phosphorus ore waste materials can also realize the present invention.
Embodiment 1
Reverse flotation phosphorus mine tailing is calcined at 900 DEG C and obtains within 1.5 hours calcined product, the XRD diffraction of reverse flotation phosphorus mine tailing
Figure is shown in accompanying drawing 1.It was found from from accompanying drawing 1, contained magnesium calcium carbonate and fluorapatite are all to be not susceptible to instead in reverse flotation phosphorus mine tailing
The material answered, now contained silica is nonactive silica, can not also participate in reaction；(forged after certain high-temperature calcination
The XRD diffraction patterns of prepared active phosphorus mine tailing are referring to accompanying drawing 2 after burning), above-mentioned substance is converted into calcium oxide, magnesia, carbonic acid
Calcium, silica and fluorapatite etc., can react with other materials, to produce required material；By the material after calcining
Steam press maintenance, can promote calcium oxide, silica etc. and silica to accelerate reaction, reduce the alkalescence of steam-cured thing, be allowed to applicable
In being used as soil conditioner.
Therefore we understand that reverse flotation phosphorus mine tailing is carried out into calcining and steam press maintenance processing can obtain with soil improvement
The active phosphorus mine tailing of effect, it can be layed in lean soil as soil conditioner, has certain soil improvement
Effect.
Steam press maintenance is that steam press maintenance produces soil improvement in 4 hours under the conditions of 175 DEG C, 0.9MPa in the present embodiment
Agent.
Embodiment 2-5
By the introduction of embodiment 1, we understand that reverse flotation phosphorus mine tailing is carried out into calcining and steam press maintenance processing to obtain
To soil conditioner, but so prepared soil conditioner is poor property particle, needs to wait it naturally making in actual use
Decomposed with lower, competence exertion effect merged with soil, onset time is long, and effect is not good, embodiment 2-5 is provided for this present invention,
Improve soil conditioner by wherein adding soil raw material, the soil conditioner that active phosphorus mine tailing is made after being mixed with soil,
It can preferably be merged with lean soil, soil conditioner can be allowed to play effect faster.
In order to describe gradual change, in the following description for phosphorus mine tailing without referring both to reverse flotation phosphorus mine tailing in the case of specified otherwise.
Table 1
| Numbering | Active phosphorus mine tailing (mass fraction) | Soil (mass fraction) |
| 2 | 1 | 84 |
| 3 | 20 | 65 |
| 4 | 50 | 35 |
| 5 | 80 | 5 |
Table 1 be embodiment 2~5 in active phosphorus mine tailing and soil mass fraction proportioning, wherein active phosphorus mine tailing for will
Reverse flotation phosphorus mine tailing is calcined >=1 hour at 800~1200 DEG C, then is handled after crushing and screening, takes the particle of≤50 mesh to be steamed
Active phosphorus mine tailing is obtained after pressure maintenance processing, steam press maintenance is the steam press maintenance 3 under the conditions of 170~180 DEG C, 0.8~1.0MPa
~5 hours.
In order to increase the activity of active phosphorus mine tailing, silicon ash, the addition of usual above-mentioned silicon ash are added with steam press maintenance
Less than or equal to the 15% of active phosphorus mine tailing quality, in embodiment 2~5 addition of silicon ash for active phosphorus mine tailing quality 11~
15%.Explanation is additionally needed in addition to silicon ash, diatomite can also play same effect, naturally it is also possible to mix silicon ash and diatomite
Conjunction is used.
Crushing and screening processing be in order to reduce calcium oxide, magnesia, calcium carbonate, silica component content, improve phosphorus
Content, and reduce basic component content.In the present embodiment, the soil of selection is the native and humous mixture in gardens, wherein
Gardens are native and mass ratio humous is 4:1.Need exist for explanation and have no harsh limitation for the selection of soil, but be preferably
Water retention property is good, the high soil of fertilizer, and soil can gather materials on the spot in actual production.In addition, the particle diameter of soil be preferably 1~
3mm, so can preferably be merged, it is preferably wet mixing that both, which mix, with active phosphorus mine tailing (grain diameter is approached), because after wet mixing,
Homo-effect is more preferable, and with the presence of moisture, the phosphorus that can be allowed in active phosphorus mine tailing plays effect faster, allows soil conditioner more
Fast performance effect.The old time is homogenized in the embodiment above for 7 days, can be fitted of course for more preferably using effect is obtained
When the extension homogenizing old time.
In addition, the one or more that can also be added on the basis of embodiment 1 in ardealite, phosphorus slag, perlite, fertilizer are come
Soil conditioner is prepared, the addition of wherein ardealite and phosphorus slag can increase the content of phosphorus in soil conditioner, and can provide phosphorus
The solid waste comprehensive utilization in source；Perlite main function is to increase the water retention property of soil conditioner；Fertilizer is to improve soil
Fertility, and improved soil demand can be needed according to different zones, select different fertilizer.
Embodiment 6-30
Embodiment 6-30 is the preferred embodiment of the present invention, and the process chart of its preparation method is referred to accompanying drawing 3.
The mass ratio for applying soil and active phosphorus mine tailing in example 6~10 is 84:1, each group distribution ratio is shown in Table 2.
Table 2
In embodiment 6~10, the step of preparing above-mentioned soil conditioner is as follows：
Wherein active phosphorus mine tailing preparation method and the active phosphorus mine tailing preparation method provided in embodiment 2-5 is essentially identical.
Reverse flotation phosphorus mine tailing is calcined 3 hours at 800 DEG C, then handled after crushing and screening, takes the particle of≤50 mesh to carry out steam pressure and supports
Active phosphorus mine tailing is obtained after shield processing, steam press maintenance is that steam press maintenance 3~5 is small under the conditions of 170~180 DEG C, 0.8~1.0MPa
When；Silicon ash is added with steam press maintenance, the consumption of silicon ash sees the above table 2.Wherein soil conditioner be divided into again dryness base material and
Water, base material includes active phosphorus mine tailing, soil, ardealite, phosphorus slag, perlite, fertilizer, silicon ash etc..
Stir (3~5min of stirring) after then active phosphorus mine tailing is mixed with ardealite, phosphorus slag, then adds soil
Earth, perlite and fertilizer, stir (3~5min of stirring), is eventually adding load weighted water, stir (stirring 5~
10min), then by resulting material it is aged 7 days, that is, obtains using active phosphorus mine tailing and soil as the soil conditioner of primary raw material.
Here fertilizer selection is common agriculture composite fertilizer, in actual production process can according to required improved soil fertility situation come
The different fertilizer of selection, may be selected the composite fertilizer of without phosphorus or few phosphorus.And fertilizer addition is also without strict limitation.
Phosphorus slag and ardealite are as the waste solids of phosphorus industry, and component contained therein is with the component in active phosphorus mine tailing in nature
The active ingredient in soil conditioner can be generated under the conditions of weathering hydrolysis, soil conditioner improved effect is improved, perlite rises
Water retention, and fertilizer provides nutrient using initial stage in soil conditioner to plant, makes active ingredient in later stage soil conditioner
Played.
The amount ratio of soil and active phosphorus mine tailing is 3 in embodiment 11~15:2, each group distribution ratio is shown in Table 3.
Table 3
The basic such as embodiment 6 of its preparation method, except that the calcining heat of phosphorus mine tailing is 950 DEG C, calcination time is
1.5 hour.
The amount ratio of soil and active phosphorus mine tailing is 9 in embodiment 16~20:8, each group distribution ratio is shown in Table 4.
Table 4
In embodiment 16~20, the step of preparing above-mentioned soil conditioner is substantially the same manner as Example 6, and difference is
The calcining heat of phosphorus mine tailing is changed to 1000 DEG C, and calcination time is 1.5 hours.
The amount ratio of soil and active phosphorus mine tailing is 5 in embodiment 21~25:12, each group distribution ratio is shown in Table 5.
In embodiment 21~25, the step of preparing above-mentioned soil conditioner is substantially the same manner as Example 16.
Table 5
The amount ratio of soil and active phosphorus mine tailing is 1 in embodiment 26~30:16, each component, which is matched somebody with somebody, is shown in Table 6.
Table 6
In embodiment 26~30, the step of preparing above-mentioned soil conditioner is substantially the same manner as Example 16, and difference exists
1200 DEG C are changed in the calcining heat of phosphorus mine tailing, calcination time is 1 hour.
The soil conditioner for preparing of embodiment 6~30 is subjected to planting experiment, by its water absorption rate, water retention,
The germination percentage of plant and the upgrowth situation of plant characterize the effectiveness of different formulations soil conditioner.
Test result shows that above-described embodiment soil conditioner water absorption rate is 50~80%, water retention 47~76%, germination
Rate is 51.3~83.2%, and above index all meets the demand of plant growth after soil improvement.
The pH value of soil conditioner is measured simultaneously, and its pH value meets the growth demand of plant between 6.5~9.4.
Choose before embodiment 6,11,21,25,26 tests its available phosphorus content, soil conditioner planting plants and measure once
Available phosphorus content, an available phosphorus content was surveyed after plantation every 7 days.Available phosphorus content is in terms of P2O5, the available phosphorus in base material
(P) content (mg/kg) is calculated as follows：
In formula：
WP--- available phosphorus amount, mg/kg；
C --- available phosphorus amount, μ g are checked in from working curve；
T --- divide and take multiple (overall solution volume 50mL/ draw solutions volume)；
M --- air-dry quality of soil sample, g；
K --- air-dried soil sample is converted into the moisture conversion coefficient of drying soil sample.
Weigh and be placed in by the air-dried soil sample 5.0000g (being accurate to 0.0001g) of 2mm sieve apertures in 200mL conical flasks, added
25mL hydrochloric acid-sulfuric acid agent, jumps a queue, is placed on vibrating machine and vibrates 5min.Filtered in 50mL volumetric flasks, used with slow filter paper
Water washing, adds water and is diluted to scale, shakes up.Do blank test simultaneously.As filtrate has color, a small amount of non-phosphorus active carbon can be added to make
Decolorization.
Draw 2.00mL~10.00mL solution to be placed in 50mL volumetric flasks, add water to 15mL~20mL, plus 1 and drip to nitro
Phenol indicator, solution is adjusted to yellow with 2mol/L sodium hydroxide solutions, then with 0.5mol/L sulfuric acid solutions regulation solution to micro-
Yellow, adds the anti-developer of 5mL molybdenum antimony, is diluted with water to scale, shakes up.Place after 30min, on spectrophotometer, in
At 700nm wavelength, absorbance is determined with 1cm~2cm absorption vessels, corresponding phosphorus amount is checked in from working curve.
Take 0,5,10,15,20,25,30 μ g phosphorus standard liquids to be placed in 50mL volumetric flasks respectively, grasped by aforesaid operations step
Make, drawing curve.
Test result is as shown in table 7：
Table 7
As can be seen from the table, with the increase of implantation time, the content of available phosphorus also can slowly increase, and plant exists
Phosphorus can be absorbed in growth course and causes consumption, so understanding that the humic acid that plant secretes in growth course promotes in phosphorus mine tailing
Fluorapatite decompose, and be that available phosphorus content in slow process, sample can be slowly increased because of plant secretion humic acid, institute
With such scheme the phosphorus in phosphorus mine tailing can be made to be fully used.In addition, we are it can also be seen that the growth of available phosphorus content
Rate is increased as active phosphorus mine tailing accounts for the growth of soil conditioner mass fraction, therefore its application is to the work of soil improvement
With obvious.In addition, needing exist for explanation a bit, as active phosphorus mine tailing consumption increases, the alkalescence of soil conditioner can strengthen, right
Screening process after this calcines phosphorus mine tailing, problem above can be alleviated by taking≤50 mesh particles to carry out steam press maintenance, and be sieved
To tail over or well construction material, can further recycle.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and limiting the scope of the invention can not be construed in any way.Based on explanation herein, the technology of this area
Personnel, which would not require any inventive effort, can associate other embodiments of the present invention, and these modes are fallen within
Within protection scope of the present invention.
Claims (5)
1. a kind of soil conditioner, it is characterised in that including reverse flotation phosphorus mine tailing through 800~1200 DEG C of calcinings, crushing and screenings, so
The mesh particle of particle diameter≤50 is taken to carry out the active phosphorus mine tailing that steam press maintenance processing is obtained afterwards；
Silicon ash is also added with steam press maintenance；
The soil conditioner also includes soil, ardealite, phosphorus slag, perlite and fertilizer；
Wherein the 15% of the addition quality of silicon ash≤active phosphorus mine tailing quality；
84 times of the quality of soil≤active phosphorus mine tailing quality；
11 times of the quality of ardealite≤active phosphorus mine tailing quality；
4.5 times of the quality of phosphorus slag≤active phosphorus mine tailing quality；
3 times of the quality of perlite≤active phosphorus mine tailing quality.
2. soil conditioner according to claim 1, it is characterised in that the calcining heat is 850~950 DEG C, during calcining
Between >=1 hour.
3. soil conditioner according to claim 1 or 2, it is characterised in that the steam press maintenance be 170~180 DEG C,
Steam press maintenance 3~5 hours under the conditions of 0.8~1.0MPa.
4. the preparation method of any described soil conditioners of a kind of claim 1-3, it is characterised in that comprise the following steps：
(1) calcine：Reverse flotation phosphorus mine tailing is calcined at 800~1200 DEG C；
(2) crushing and screening and steam press maintenance：Material after calcining is crushed, takes the particle of≤50 mesh to carry out steam press maintenance and is lived
Property phosphorus mine tailing, silicon ash is added in steam press maintenance；
(3) stirred after then active phosphorus mine tailing is mixed with ardealite, phosphorus slag, then add soil, perlite and fertilizer
Material, is stirred, is eventually adding water, stir, then resulting material is aged 7 days, that is, obtains soil conditioner.
5. the preparation method of soil conditioner according to claim 4, it is characterised in that described calcining heat is 850~
950 DEG C, calcination time >=1 hour；
Described steam press maintenance is steam press maintenance 3~5 hours under the conditions of 170~180 DEG C, 0.8~1.0MPa.
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