CN109266361A - The method for preparing soil conditioner using red mud - Google Patents
The method for preparing soil conditioner using red mud Download PDFInfo
- Publication number
- CN109266361A CN109266361A CN201811304868.5A CN201811304868A CN109266361A CN 109266361 A CN109266361 A CN 109266361A CN 201811304868 A CN201811304868 A CN 201811304868A CN 109266361 A CN109266361 A CN 109266361A
- Authority
- CN
- China
- Prior art keywords
- red mud
- soil conditioner
- soil
- mud powder
- parts
- 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.)
- Withdrawn
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
- C09K2101/00—Agricultural use
-
- 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
Abstract
The invention belongs to technical field of land improvement, and in particular to a method of soil conditioner is prepared using red mud, comprising the following steps: (1) Waste Sulfuric Acid is added into red mud, it is stirred, it is filtered after standing, much filtrate is dried, grinding refinement obtains red mud powder；(2) coal dust is added into red mud powder, high-temperature roasting after mixing obtains activation red mud powder；(3) ammonium hydroxide is added into activation red mud powder, is stood after being stirred, filter off precipitating, filtrate is concentrated, low temperature spray drying, obtained dealuminzation red mud powder；(4) dealuminzation red mud powder, ardealite, plant ash, calcium magnesium phosphate, complex micro organism fungicide and cementitious matter are uniformly mixed, natural air drying obtains soil conditioner；The present invention targetedly improves acid soil property, due to can especially eradicate in acid soil because eluviation cannot achieve the drawbacks of nutrient stays admittedly, the acid degree of soil is effectively reduced, it is ensured that the increasing both production and income of crops.
Description
Technical field
The invention belongs to technical field of land improvement, and in particular to a method of soil conditioner is prepared using red mud.
Background technique
Plant normal growth development depends on good soil environment, but in nature, the soil of plant growth is often
There is various barrier factors, limit the growth of plant.For example, having height in the large area saline-alkali soil of world land surface
The salinity of concentration；There is the H of high concentration in acid soil+, Al3+, Mn2+And Fe2+Deng；There is excessive reproducibility object in flooded soils
Matter and Fe2+Deng；Lack enough available phosphorus, iron and zinc etc. in calacareous soil.These soil with plant growth barrier factors
Earth is known as adverse circumstance soil.The area of adverse circumstance SOIL DISTRIBUTION is extensive, and improvement difficulty is big, therefore, it has also become Agriculture Production
Limiting factor.
Acid soil is general name of low ph value soil, including red soil, yellow earth, laterite, red earth and podzolic soil etc., acidity
Soil region precipitation is abundant, and eluviation is strong, and alkali protection degree is low, and acidity is higher, for this purpose, those skilled in the art have opened
A variety of soil conditioners have been sent out, the Upgrading of soil is dedicated to.Mineral material is led in Heavy Metal Pollution Control and environment remediation
There is unique effect in domain, can reduce the partial size of mineral by Mechanical Crushing, to reach higher specific surface area, to utilize
Harmful substance in adsorption effect removal soil and water body；Currently, specifically including that 1) mineral material to the modification of mineral material
The surface area of material is modified；2) cellular structure is modified；3) surface-active-modified.Red mud is discarded as the maximum mineral of China's discharge amount
Object, red mud particle have good adsorptivity to metal ion in water body and Non-metallic components.It therefore, will be with detergent power
Red mud, which is modified, to be used in soil remediation, and production cost is not only reduced, and resource utilization is improved, meanwhile, it is capable to solve
The problem of soil Fl, reaches certain society and environmental benefit.Such as application No. is in " CN201711443585.4 "
State's patent discloses a kind of preparation method and application of red mud soil modifying agent so that using the soil conditioner to heavy metal
When contaminated soil is adsorbed, content of beary metal can be significantly reduced, is increase soil fertility, improve resource utilization, solved red
Mud largely stores up the technical problems such as land occupation, pollution environment.
Summary of the invention
The purpose of the present invention is to provide a kind of methods for preparing soil conditioner using red mud, are prepared into through the invention
To soil conditioner can preferably overcome the eluviation of the abundant area's acid soil of precipitation, improve the improvement to acid soil
Effect, can fast quick-recovery Nutrient Elements in Soil content, the improved effect reached, for the research and development of soil conditioner
New thinking is provided.
To achieve the goals above, the present invention is achieved by the following scheme:
A method of soil conditioner is prepared using red mud, comprising the following steps:
(1) Waste Sulfuric Acid is added into red mud, is stirred, is filtered after standing 30~60min, much filtrate is dried, grinds
Refinement obtains the red mud powder that granularity is 90~100 mesh, spare；
(2) coal dust is added into red mud powder, carries out high-temperature roasting after mixing, obtains activation red mud powder；
(3) ammonium hydroxide is added into activation red mud powder, is stood after being stirred, filter off precipitating, filtrate is concentrated, low temperature
Spray drying, obtained dealuminzation red mud powder；
(4) dealuminzation red mud powder, ardealite, plant ash, calcium magnesium phosphate, complex micro organism fungicide and cementitious matter are mixed equal
Even, natural air drying obtains the soil conditioner.
In further technical solution, in step (1), the additional amount of the Waste Sulfuric Acid is to be stirred upper layer after standing
Waste liquid pH value is subject to 6.0~7.0.
In further technical solution, in step (2), the weight ratio of the red mud powder and coal dust be 1:(0.3~
0.5)；
The condition of the high-temperature roasting includes that maturing temperature is 450~600 DEG C, and pressure is -150~0MPa in roaster.
In further technical solution, in step (3), the additional amount of the ammonium hydroxide be so that stand after precipitation capacity not
Until being further added by.
In further technical solution, in step (3), the condition of the low temperature spray drying includes that inlet air temperature is
110~130 DEG C, leaving air temp be 40~60 DEG C.
In further technical solution, in step (4), the cementitious matter is hydroxymethyl starch.
In further technical solution, in step (4), the partial size of the soil conditioner is 0.2~1mm.
Compared with prior art, the present invention has following technical effect that
1, the method provided by the invention for preparing soil conditioner using red mud, not only alleviate traditional waste red mud and
The problem of land occupation resource caused by a large amount of accumulations of ardealite, pollution environment, the resource utilization of red mud is also achieved, is become
Waste be changed into values, kills two birds with one stone；
2, soil conditioner provided by the invention targetedly improves acid soil property, can especially eradicate acid
Property soil in cannot achieve the drawbacks of nutrient stays admittedly because of eluviation, the aluminium element in effectively fixed acid soil is kept away
Exempt from influence of the aluminium poison to soil；Potassium, magnesium, the calcium that the extreme in soil lacks are supplemented simultaneously, hydrogen, aluminium adsorb solid
Change, the acid degree of soil is effectively reduced, rebuilds soil microcirculation, it is ensured that the increasing both production and income of crops.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is furture elucidated.
All raw materials in the present invention, are not particularly limited its source, buying on the market or according to this field skill
The preparation of conventional method known to art personnel.
All raw materials in the present invention, are not particularly limited its purity, and present invention preferably employs analyze pure or composite wood
The conventional purity that material field uses.
The present invention provides a kind of methods for preparing soil conditioner using red mud, comprising the following steps:
(1) Waste Sulfuric Acid is added into red mud, is stirred, is filtered after standing 30~60min, much filtrate is dried, grinds
Refinement obtains the red mud powder that granularity is 90~100 mesh, spare；
(2) coal dust is added into red mud powder, carries out high-temperature roasting after mixing, obtains activation red mud powder；
(3) ammonium hydroxide is added into activation red mud powder, is stood after being stirred, filter off precipitating, filtrate is concentrated, low temperature
Spray drying, obtained dealuminzation red mud powder；
(4) dealuminzation red mud powder, ardealite, plant ash, calcium magnesium phosphate, complex micro organism fungicide and cementitious matter are mixed equal
Even, natural air drying obtains the soil conditioner.
Heretofore described red mud is that aluminium industry extracts the pollution waste residue being discharged when aluminium oxide, the every life of average
1 ton of aluminium oxide is produced, can incidentally generate 1~2 ton of red mud, therefore the yield of red mud is very big.But red mud in the prior art is comprehensive
It is low to close utilization rate, for this purpose, the present invention provides a kind of methods for preparing soil conditioner using red mud.
The Waste Sulfuric Acid is generated in industrial production, the Waste Sulfuric Acid as caused by resin industry, the Waste Sulfuric Acid it is dense
Degree, since it contains plurality of impurities, is difficult to be recycled by other industry 70% or so, and since itself is acid higher,
It is dangerous material again, processing is more troublesome all the time.In the present invention, Waste Sulfuric Acid is added in red mud, can not only be neutralized red
Overbased material in mud, is also used as Oxidant, which generates a large amount of oxygen-containing in red mud powder
Group, the oxygen-containing group are deviate from different forms in the roasting process of red mud powder, further enrich the hole of red mud
Gap structure；Further, Waste Sulfuric Acid can obtain aluminium salt with oxidation reactive aluminum remaining in red mud.
In the present invention, by the way that ammonium hydroxide is added into the red mud powder after activation, ammonium hydroxide can sink the aluminium salt in red mud powder
It forms sediment, to remove the aluminium contained in red mud powder, further, by low temperature spray drying, obtains dealuminzation red mud powder.
In further preparation method, by dealuminzation red mud powder and ardealite, plant ash, calcium magnesium phosphate, complex microorganism
Microbial inoculum mixing, and using cementitious matter as connecting material formation using dealuminzation red mud powder as core material, ardealite, plant ash, calcium magnesium phosphate,
Complex micro organism fungicide is the encapsulated particles object of wall material, which, which mixes, puts in the soil, can not only be timely
The potassium ion, magnesium ion, the calcium ion that extremely lack in supplement acid soil, can also to the hydrogen ion being rich in acid soil,
Aluminium ion carries out absorption solidification, reduces the acid degree of soil, and further improve the micro- of soil by complex micro organism fungicide
Ecological environment, it is ensured that acid soil obtains efficient improvement, it is made to be suitble to the growth of plant faster.
According to the present invention, in the present invention, in step (1), the additional amount of the Waste Sulfuric Acid is to be stirred upper layer after standing
Waste liquid pH value is subject to 6.0~7.0.
According to the present invention, in the present invention, in step (2), the weight ratio of the red mud powder and coal dust be 1:(0.3~
0.5)；By mixing coal dust into red mud powder, the roasting efficiency of red mud powder is improved, harmful substance in red mud powder is reduced
Content, the dosage of coal dust is unsuitable very few, is easy to cause the roasting of red mud powder insufficient when very few；And the dosage of coal dust also should not mistake
More, otherwise sexual valence is relatively low.
The condition of the high-temperature roasting includes that maturing temperature is 450~600 DEG C, and pressure is -150~0MPa in roaster.
According to the present invention, the present invention in, in step (3), the additional amount of the ammonium hydroxide be so that stand after precipitation capacity not
Until being further added by.
In the present invention, in step (3), the condition of the low temperature spray drying includes that inlet air temperature is 110~130 DEG C, goes out
Air temperature is 40~60 DEG C.
According to the present invention, in the step (4), the cementitious matter is hydroxymethyl starch.
According to the present invention, in the step (4), the partial size of the soil conditioner is 0.2~1mm.
In the present invention, the solid slag that the ardealite generates when referring in phosphoric acid production with sulfuric acid treating phosphorite,
Its main component is calcium sulfate, and in the prior art, ardealite is also a kind of biggish solid waste of discharge capacity, is occupied a large amount of
Soil forms slag mountain, serious to polluted environment.The present invention is using ardealite as the raw material for preparing of soil conditioner, not only object
Its use to the greatest extent, it is at low cost, environmental pollution is also reduced, is killed two birds with one stone.
In the present invention, complex micro organism fungicide passes through the complex micro organism fungicide energy to the adaptable of soil environment
Itself microbial activity in soil is enough improved, improves soil comprehensively.It is special that the present invention does not do the type of the microbial bacterial agent
It limits, can often know for one of ordinary skill in the art, for example, the microbial bacterial agent is sulfatereducting bacteria, withered grass gemma
Bacillus, bacillus megaterium, bacillus licheniformis, saccharomycete, the several mixing in any proportion in Serratieae；
The soil conditioner being prepared in the present invention is applied with 80~120kg/ mus of usage amount into acid soil,
Mixing scarifying is carried out using rotary cultivator, so that soil conditioner is with soil mixed soil with a thickness of 20~30cm.
In the present invention, the dealuminzation red mud powder, ardealite, plant ash, calcium magnesium phosphate, complex micro organism fungicide and cementitious matter
Dosage can select in a wider scope, preferably improved in order to ensure mixture prepared soil conditioner has
Effect, the soil conditioner include that the raw material of following parts by weight is prepared: 50~75 parts of dealuminzation red mud powder, ardealite 15~
30 parts, 5~10 parts of plant ash, 5~10 parts of calcium magnesium phosphate, 0.5~1 part of complex micro organism fungicide, 10~25 parts of cementitious matter.
It is further preferred that the raw material that the soil conditioner includes following parts by weight is prepared: dealuminzation red mud powder 60
~70 parts, 20~25 parts of ardealite, 7~9 parts of plant ash, 7~9 parts of calcium magnesium phosphate, 0.6~0.8 part of complex micro organism fungicide, glue
15~20 parts of ramming material.
More preferably, the soil conditioner includes that the raw material of following parts by weight is prepared: 65 parts of dealuminzation red mud powder,
22 parts of ardealite, 8 parts of plant ash, 8 parts of calcium magnesium phosphate, 0.7 part of complex micro organism fungicide, 18 parts of cementitious matter.
Below by way of specific embodiment to the method provided by the invention for preparing soil conditioner using red mud make into
The explanation of one step.
Embodiment 1
A method of soil conditioner is prepared using red mud, comprising the following steps:
(1) Waste Sulfuric Acid is added into red mud, is stirred, is filtered after standing 40min, much filtrate is dried, grinding refinement
The red mud powder that granularity is 90 mesh is obtained, it is spare；
Wherein, the additional amount of the Waste Sulfuric Acid be subject to be stirred standing after upper layer waste liquid pH value be 6.0；
(2) coal dust is added into red mud powder, is after mixing 500 DEG C in temperature, pressure is -100MPa in roaster
Under conditions of carry out high-temperature roasting, obtain activation red mud powder；
The weight ratio of the red mud powder and coal dust is 1:0.4；
(3) ammonium hydroxide is added into activation red mud powder, is stood after being stirred, filter off precipitating；The additional amount of the ammonium hydroxide is
So that until the precipitation capacity after standing is not further added by；
The half for being concentrated into its volume, low temperature spray drying are carried out to filtrate, the condition for controlling low temperature spray drying is, into
Air temperature is 120 DEG C, leaving air temp is 50 DEG C, obtained dealuminzation red mud powder；
(4) dealuminzation red mud powder, ardealite, plant ash, calcium magnesium phosphate, complex micro organism fungicide and hydroxymethyl starch are mixed
Uniformly, natural air drying obtains the soil conditioner；
It is stirred so that the partial size of the soil conditioner is 0.5mm.
The soil conditioner includes that the raw material of following parts by weight is prepared: 65 parts of dealuminzation red mud powder, 22 parts of ardealite,
8 parts of plant ash, 8 parts of calcium magnesium phosphate, 0.2 part of sulfatereducting bacteria, 0.1 part of bacillus subtilis, 0.1 part of bacillus megaterium,
0.1 part of clothing bacillus, 0.2 part of saccharomycete, 18 parts of hydroxymethyl starch.
Embodiment 2
As embodiment 1 provide soil conditioner preparation method, unlike, in step (4), the soil conditioner
Raw material including following parts by weight is prepared: 60 parts of dealuminzation red mud powder, 20 parts of ardealite, 7 parts of plant ash, 7 parts of calcium magnesium phosphate,
0.2 part of sulfatereducting bacteria, 0.1 part of bacillus subtilis, 0.1 part of bacillus megaterium, 0.1 part of bacillus licheniformis, saccharomycete
0.1 part, 15 parts of hydroxymethyl starch.
Remaining is constant, and the soil conditioner is prepared.
Embodiment 3
As embodiment 1 provide soil conditioner preparation method, unlike, in step (4), the soil conditioner
Raw material including following parts by weight is prepared: 70 parts of dealuminzation red mud powder, 25 parts of ardealite, 9 parts of plant ash, 9 parts of calcium magnesium phosphate,
0.2 part of sulfatereducting bacteria, 0.2 part of bacillus subtilis, 0.1 part of bacillus megaterium, 0.1 part of bacillus licheniformis, saccharomycete
0.2 part, 20 parts of hydroxymethyl starch.
Remaining is constant, and the soil conditioner is prepared.
Embodiment 4
As embodiment 1 provide soil conditioner preparation method, unlike, in step (4), the soil conditioner
Raw material including following parts by weight is prepared: 50 parts of dealuminzation red mud powder, 15 parts of ardealite, 5 parts of plant ash, 5 parts of calcium magnesium phosphate,
0.1 part of sulfatereducting bacteria, 0.1 part of bacillus subtilis, 0.1 part of bacillus megaterium, 0.1 part of bacillus licheniformis, saccharomycete
0.1 part, 10 parts of hydroxymethyl starch.
Remaining is constant, and the soil conditioner is prepared.
Embodiment 5
As embodiment 1 provide soil conditioner preparation method, unlike, in step (4), the soil conditioner
Raw material including following parts by weight is prepared: 75 parts of dealuminzation red mud powder, 30 parts of ardealite, 10 parts of plant ash, calcium magnesium phosphate 10
Part, 0.2 part of sulfatereducting bacteria, 0.2 part of bacillus subtilis, 0.2 part of bacillus megaterium, 0.2 part of bacillus licheniformis, yeast
0.2 part of bacterium, 25 parts of hydroxymethyl starch.
Remaining is constant, and the soil conditioner is prepared.
Comparative example 1
As embodiment 1 provide soil conditioner preparation method, unlike, it is direct to red mud powder in step (2)
High-temperature roasting processing is carried out, it is identical in the uniform embodiment 1 of the temperature of calcination process, time conditions；Then according to the system of embodiment 1
Standby step carries out, and obtains the soil conditioner.
Comparative example 2
As embodiment 1 provide soil conditioner preparation method, unlike, in step (2), the red mud powder with
The mass ratio of coal dust is 1:0.2；
Remaining is constant, and the soil conditioner is prepared.
Comparative example 3
As embodiment 1 provide soil conditioner preparation method, unlike, in step (4), the soil conditioner
Raw material including following parts by weight is prepared: 40 parts of dealuminzation red mud powder, 22 parts of ardealite, 8 parts of plant ash, 8 parts of calcium magnesium phosphate,
0.2 part of sulfatereducting bacteria, 0.1 part of bacillus subtilis, 0.1 part of bacillus megaterium, 0.1 part of bacillus licheniformis, saccharomycete
0.2 part, 18 parts of hydroxymethyl starch.
Remaining is constant, and the soil conditioner is prepared.
Comparative example 4
Such as the preparation method for the soil conditioner that embodiment 1 provides, unlike, not to red mud powder carry out above-mentioned activation,
Dealumination treatment, but directly mix it with the raw material components for being used to prepare the soil conditioner, it may be assumed that
Red mud powder, ardealite, plant ash, calcium magnesium phosphate, complex micro organism fungicide and hydroxymethyl starch are uniformly mixed, from
It so air-dries, obtains the soil conditioner；
It is stirred so that the partial size of the soil conditioner is 0.5mm.
The soil conditioner includes that the raw material of following parts by weight is prepared: 65 parts of red mud powder, 22 parts of ardealite, vegetation
Grey 8 parts, 8 parts of calcium magnesium phosphate, 0.2 part of sulfatereducting bacteria, 0.1 part of bacillus subtilis, 0.1 part of bacillus megaterium, lichens bud
0.1 part of spore bacillus, 0.2 part of saccharomycete, 18 parts of hydroxymethyl starch.
Comparative example 5
As embodiment 1 provide soil conditioner preparation method, unlike, step (3) are saved, directly by step
(2) the activation red mud powder obtained after high temperature roasting is mixed with the raw material components for being used to prepare the soil conditioner, it may be assumed that
Activation red mud powder, ardealite, plant ash, calcium magnesium phosphate, complex micro organism fungicide and hydroxymethyl starch are mixed
Even, natural air drying obtains the soil conditioner；
It is stirred so that the partial size of the soil conditioner is 0.5mm.
The soil conditioner includes that the raw material of following parts by weight is prepared: activation 65 parts of red mud powder, 22 parts of ardealite,
8 parts of plant ash, 8 parts of calcium magnesium phosphate, 0.2 part of sulfatereducting bacteria, 0.1 part of bacillus subtilis, 0.1 part of bacillus megaterium,
0.1 part of clothing bacillus, 0.2 part of saccharomycete, 18 parts of hydroxymethyl starch.
The following are the related datas for carrying out field trial:
The field for choosing one piece of acid soil property, it is as follows to test corresponding soil parameters: soil pH value 4.79, the soil weight
1.48g/cm3, soil porosity 52%, soil organic matter content 22.52g/kg, microbial biomass carbon 2.18g/kg, full nitrogen
1.08g/kg, full phosphorus 0.49g/kg, full potassium 10.32g/kg, total nutrient (N+P2O5+K2O)12.05g/kg；
Partition is carried out to above-mentioned field, the soil selecting block at random and providing using above-described embodiment 1-5, comparative example 1-5
Earth modifying agent carries out improvement operation, and specific mode of ameliorating is to be applied with 100kg/ mus of usage amount into soil, uses rotary tillage
Machine carries out mixing scarifying, so that soil conditioner is with soil mixed coating with a thickness of 20~30cm.Improvement is planted simultaneously later
Cassava, and the block any soil conditioner is not used is as blank group.To each block cassava production and soil pH value into
Row statistics, as shown in table 1.
Table 1:
| Cassava production (kg/ mus) | Cassava units increased in production | Increase production (%) | Soil pH value | |
| Blank group | 1628 | / | / | 4.78 |
| Embodiment 1 | 2351 | 723 | 30.75 | 5.36 |
| Embodiment 2 | 2348 | 720 | 30.66 | 5.32 |
| Embodiment 3 | 2338 | 710 | 30.37 | 5.33 |
| Embodiment 4 | 2341 | 713 | 30.46 | 5.35 |
| Embodiment 5 | 2345 | 717 | 30.58 | 5.37 |
| Comparative example 1 | 1762 | 134 | 7.60 | 4.96 |
| Comparative example 2 | 1824 | 196 | 10.75 | 5.04 |
| Comparative example 3 | 2013 | 385 | 19.13 | 5.11 |
| Comparative example 4 | 1694 | 66 | 3.90 | 4.82 |
| Comparative example 5 | 2104 | 476 | 22.62 | 5.15 |
Can be seen that soil conditioner provided by the invention in conjunction with above-mentioned statistical data can effectively improve the pH of soil
Value improves the microcirculation of soil, improves crop yield.
The soil property of blank group in above-mentioned block, embodiment 1, comparative example 3 is analyzed, as shown in table 2.
Table 2:
It can be seen that in conjunction with above-mentioned experimental data based on soil conditioner provided by the invention, by improvement in 1 year, soil
The pH value of earth is substantially increased, and the soil weight significantly reduces, and soil porosity rises, soil with organic matter content, microorganism carbon amounts,
And nitrogen, phosphorus, potassium etc. uniformly improve in various degree.
To sum up, there is the soil conditioner provided by the invention being prepared using red mud excellent soil improvement to imitate
Fruit and effect of increasing production.
Basic principles and main features and the features of the present invention of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims
And its equivalent thereof.
Claims (7)
1. a kind of method for preparing soil conditioner using red mud, it is characterised in that: the following steps are included:
(1) Waste Sulfuric Acid is added into red mud, is stirred, is filtered after standing 30~60min, much filtrate is dried, grinding refinement
The red mud powder that granularity is 90~100 mesh is obtained, it is spare；
(2) coal dust is added into red mud powder, carries out high-temperature roasting after mixing, obtains activation red mud powder；
(3) ammonium hydroxide is added into activation red mud powder, is stood after being stirred, filter off precipitating, filtrate is concentrated, cold nebulization
It is dry, obtained dealuminzation red mud powder；
(4) dealuminzation red mud powder, ardealite, plant ash, calcium magnesium phosphate, complex micro organism fungicide and cementitious matter are uniformly mixed, from
It so air-dries, obtains the soil conditioner.
2. the method according to claim 1 for preparing soil conditioner using red mud, it is characterised in that: in step (1), institute
The additional amount for stating Waste Sulfuric Acid be subject to be stirred standing after upper layer waste liquid pH value be 6.0~7.0.
3. the method according to claim 1 for preparing soil conditioner using red mud, it is characterised in that: in step (2), institute
The weight ratio of the red mud powder and coal dust stated is 1:(0.3~0.5)；
The condition of the high-temperature roasting includes that maturing temperature is 450~600 DEG C, and pressure is -150~0MPa in roaster.
4. the method according to claim 1 for preparing soil conditioner using red mud, it is characterised in that: in step (3), institute
The additional amount for stating ammonium hydroxide be so that the precipitation capacity after standing is not further added by until.
5. the method according to claim 1 for preparing soil conditioner using red mud, it is characterised in that: in step (3), institute
The condition for stating low temperature spray drying includes that inlet air temperature is 110~130 DEG C, leaving air temp is 40~60 DEG C.
6. the method according to claim 1 for preparing soil conditioner using red mud, it is characterised in that: in step (4), institute
The cementitious matter stated is hydroxymethyl starch.
7. the method according to claim 1 for preparing soil conditioner using red mud, it is characterised in that: in step (4), institute
The partial size for stating soil conditioner is 0.2~1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811304868.5A CN109266361A (en) | 2018-11-05 | 2018-11-05 | The method for preparing soil conditioner using red mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811304868.5A CN109266361A (en) | 2018-11-05 | 2018-11-05 | The method for preparing soil conditioner using red mud |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109266361A true CN109266361A (en) | 2019-01-25 |
Family
ID=65192581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811304868.5A Withdrawn CN109266361A (en) | 2018-11-05 | 2018-11-05 | The method for preparing soil conditioner using red mud |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109266361A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971492A (en) * | 2019-05-09 | 2019-07-05 | 湖南双晟科技信息咨询有限公司 | A kind of soil conditioner and preparation method thereof using red mud preparation |
| CN112742856A (en) * | 2020-12-15 | 2021-05-04 | 江苏省环境工程技术有限公司 | Method for repairing heavy metal and organic contaminated soil by applying waste-based modifier |
| CN113617820A (en) * | 2021-08-18 | 2021-11-09 | 东华大学 | Passivation method and application of heavy metals in red mud |
| CN117356393A (en) * | 2023-11-14 | 2024-01-09 | 湖南仁义环保建材科技有限公司 | Plant growth nutrient soil produced by utilizing industrial waste residues and production method thereof |
| CN117356393B (en) * | 2023-11-14 | 2024-04-30 | 湖南仁义环保建材科技有限公司 | Plant growth nutrient soil produced by utilizing industrial waste residues and production method thereof |
-
2018
- 2018-11-05 CN CN201811304868.5A patent/CN109266361A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109971492A (en) * | 2019-05-09 | 2019-07-05 | 湖南双晟科技信息咨询有限公司 | A kind of soil conditioner and preparation method thereof using red mud preparation |
| CN112742856A (en) * | 2020-12-15 | 2021-05-04 | 江苏省环境工程技术有限公司 | Method for repairing heavy metal and organic contaminated soil by applying waste-based modifier |
| CN113617820A (en) * | 2021-08-18 | 2021-11-09 | 东华大学 | Passivation method and application of heavy metals in red mud |
| CN117356393A (en) * | 2023-11-14 | 2024-01-09 | 湖南仁义环保建材科技有限公司 | Plant growth nutrient soil produced by utilizing industrial waste residues and production method thereof |
| CN117356393B (en) * | 2023-11-14 | 2024-04-30 | 湖南仁义环保建材科技有限公司 | Plant growth nutrient soil produced by utilizing industrial waste residues and production method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109097064A (en) | A kind of acid soil improving agent | |
| CN107115840B (en) | Carbon-based composite material for repairing arsenic-cadmium contaminated soil and application thereof | |
| JP2018537274A (en) | Preparation method of heavy metal soil conditioner which is iron-silicon-sulfur multi-element composite biological activated carbon | |
| CN104261981A (en) | Preparation method of seaweed organic fertilizer and organic fertilizer prepared by using method | |
| CN109266361A (en) | The method for preparing soil conditioner using red mud | |
| CN107936981A (en) | Soil heavy metal combined passivator and preparation method thereof, application method and application | |
| CN104263379A (en) | Acidic soil improving agent and application method thereof | |
| CN107779196A (en) | A kind of preparation and application of soil heavy metal combined passivator | |
| CN105801307A (en) | Method for producing nanometer humus refined powder | |
| CN102600799A (en) | Method for treating wasterwater containing copper by utilizing Spartina alterniflora Loisel-based biochar | |
| CN105885868A (en) | Efficient soil restoration agent and preparing method thereof | |
| CN107954805A (en) | A kind of soil improvement method of sludge composting | |
| CN105542790A (en) | Mineral source carbocoal charcoal soil conditioner | |
| CN105367148A (en) | Efficient aerobic composting method of dehydrated sludge | |
| CN110090845A (en) | A method of utilizing pyrite slag soil red mud | |
| CN113861991A (en) | Building residue soil modifier prepared from kitchen waste, preparation method and application of modified building residue soil | |
| CN106311148B (en) | A kind of charcoal composite material and preparation method | |
| CN103058717A (en) | Heavy metal treatment technology for heavy metal adsorption, dehydration and fertilizer preparation | |
| CN110372457A (en) | A kind of production method of gangue microorganism mineral fertilizer | |
| CN109453736A (en) | A kind of soil conditioner and preparation method thereof of silicon sulphur selenium zinc multiple elements design attapulgite | |
| CN106967644B (en) | Biological agent for treating glutamic acid fermentation sewage | |
| CN104828959A (en) | Preparing method of compound microorganism flocculant and application method of compound microorganism flocculant | |
| CN109749744A (en) | The preparation method of the dedicated mineral water of soil improvement | |
| CN105833832B (en) | A kind of biochemical preparation for administering glutamic acid fermentation sewage | |
| CN117004404A (en) | Soil improvement restoration agent for comprehensively utilizing industrial and agricultural solid waste and microbial agent |
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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190125 |
|
| WW01 | Invention patent application withdrawn after publication |