CN105950156A - Soil conditioner based on secondary use of chemical phosphorus tailings and preparation method of soil conditioner - Google Patents
Soil conditioner based on secondary use of chemical phosphorus tailings and preparation method of soil conditioner Download PDFInfo
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- CN105950156A CN105950156A CN201610500016.8A CN201610500016A CN105950156A CN 105950156 A CN105950156 A CN 105950156A CN 201610500016 A CN201610500016 A CN 201610500016A CN 105950156 A CN105950156 A CN 105950156A
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- soil conditioner
- chemical industry
- phosphorous chemical
- activated carbon
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- 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
- C09K17/02—Soil-conditioning materials or soil-stabilising materials containing inorganic compounds only
- C09K17/08—Aluminium compounds, e.g. aluminium hydroxide
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- 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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a soil conditioner based on secondary use of chemical phosphorus tailings and a preparation method of the soil conditioner. The soil conditioner is prepared from the following components in parts by mass: 30 to 70 parts of biological active carbon, 20 to 30 parts of weathered coal, 30 to 60 parts of the chemical phosphorus tailings and 5 to 10 parts of kaoline. The chemical phosphorus tailings consist of the following materials in percentage by mass: 35 to 45 percent of calcium oxide, 50 to 60 percent of sulfur trioxide, 2 to 6 percent of silicon dioxide, 0.1 to 0.3 percent of aluminum oxide, 0.1 to 0.3 percent of ferric oxide and 0.01 to 0.03 percent of magnesium oxide. A saline-alkali soil conditioner which serves as an effective component is added into the chemical phosphorus tailings to realize acid-alkali neutralization, so that on one hand, secondary use of wastes is realized, and on the other hand, the environment around a factory can be gradually improved; meanwhile, the added biological active carbon is a product obtained by recycling agricultural and forestry wastes; compared with the conventional modes such as direct combustion and biological returning to the field, the mode of converting straws of agricultural and forestry crops into the biological active carbon has the advantages that the resource utilization rate can be effectively increased, and no pollution to the environment can be caused.
Description
Technical field
The present invention relates to a kind of soil conditioner, in particular, the invention mainly relates to a kind of based on phosphorous chemical industry tailing
The soil conditioner that secondary utilizes.
Background technology
Although China's phosphate rock resource enriches, but universal grade is the highest, and about more than 90% is mid low grade phosphate rock stone, this
A little resources mostly will more economical being used of ability after beneficiation enrichment.But will produce a large amount of during chemical flotation
Phosphorus mine tailing, this part mine tailing abandons in Tailings Dam as trade waste at present, not only occupies substantial amounts of soil, and big portion
Point mine tailing is all phosphorite by-product after sulfuric acid solution, have when by rain-out a large amount of acid stronger current drop down to
In neighbouring soil and farmland, the ecological environment on surrounding also result in serious impact.At present, the application master of phosphorus ore dressing tailing
Concentrate on making phosphoric slag cement, building brick and microcrystal cement etc..Owing to lacking efficient market, but at most of Tailings utilization
The Technology of reason is still in laboratory research and development phase, fails effectively to put in production.Meanwhile, although China is to combining
Close and utilize resource of tailings and the cry improved the ecological environment the highest, and put into effect the relevant law of part, regulation, but still have many
Mine department lacks due attention to Tailings utilization and control, and major part rejects there is also arbitrarily to be stacked or lose
The problem serious harm environment such as abandoning.
Summary of the invention
An object of the present invention is for above-mentioned deficiency, it is provided that a kind of soil utilized based on phosphorous chemical industry tailing secondary
Modifying agent, solves a large amount of flotation of phosphate rock tailings in prior art with expectation and cannot effectively utilize, take up an area the skills such as pollution of ecological environment
Art problem.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
One aspect of the present invention provides a kind of soil conditioner utilized based on phosphorous chemical industry tailing secondary, described soil conditioner
Including biological activated carbon 30 to 70 parts by quality ratio, weathered coal 20 to 30 parts, phosphorous chemical industry tailing 30 to 60 parts, Kaolin 5
To 10 parts, described phosphorous chemical industry tailing include calcium oxide 35% to 45% by percentage to the quality, sulfur trioxide 50% to
60%, silicon dioxide 2% to 6%, aluminium oxide 0.1% to 0.3%, ferrum oxide 0.1% to 0.3%, magnesium oxide 0.01% to
0.03%.
As preferably, further technical scheme is: the humic acids content in described weathered coal is more than weathered coal gross mass
More than 30%.
Further technical scheme is: described biological activated carbon is for corn straw, wheat stalk, sesbania straw, height
Fine strain of millet straw and any one or a few in rice straw are made for raw material.
Another aspect of the present invention provides the preparation of a kind of above-mentioned soil conditioner utilized based on phosphorous chemical industry tailing secondary
Method, described method comprises the steps: to use corn straw, wheat stalk, sesbania straw, broomcorn straw and rice straw
In any one or a few be raw material, ardent under temperature is 500 to 700 degrees Celsius solve carbonization 2 to 3 hours, prepare biology
Activated carbon；It is powder by biological activated carbon, phosphorous chemical industry tailing, weathered coal and Kaolin mechanical activation comminution respectively, and dries；By matter
Measure the biological activated carbon of powder drier than weighing, phosphorous chemical industry tailing, weathered coal uniformly mix with Kaolin.
As preferably, further technical scheme is: described dry powdered biological activated carbon, phosphorous chemical industry tailing, wind
Change coal uniformly to be mixed by blender with Kaolin.
Compared with prior art, one of beneficial effects of the present invention is: by adding effective ingredient in phosphorous chemical industry tailing
Alkaline land modifying agent, acid-base neutralization, on the one hand realize garbage secondary and utilize, also on the other hand be able to gradually improve phosphorizing treatment
Surrounding enviroment.Meanwhile, the product that the biological activated carbon of interpolation also recycles for agriculture and forestry organic waste material, farm-forestry crop stover is made a living
Thing activated carbon is relative to modes such as traditional directly burning, biological also fields, it is possible to is effectively improved resource utilization, will not make by environment
Become any pollution.
Further, the soil conditioner of formula also can effectively solve salt-soda soil realistic problem, particularly as follows:
1) soil physical and chemical property is improved: to have phosphorus content high due to biological activated carbon, porous, and not of uniform size, is conducive to increasing
The strong water absorption of soil, aeration and preservation capacity of water and fertility, solve the problem that alkaline land soil plate is real；
2) had good sustained release effect: when after soil application, biological activated carbon can adsorb a part of nutrient fertilizer, and slow down fertilizer nutrient
Release, reduces the leaching loss loss of soil nutrient, makes n utrition of soil utilization rate strengthen, during effectively solving alkaline land improving
The nutrient element loss problem brought due to moisture drip washing.
3) lodging tolerance strengthens: containing substantial amounts of element silicon in Kaolin, element silicon is deposited on the cell wall of plant epidermis
Upper formation angle silicon is double-deck, makes the mechanical strength of cane increase, makes plant tall and straight, can effectively prevent the lodging phenomenon of crop, can
Solving in beach saline land improved, process, face, field Caulis Piperis Kadsurae is relatively big, improves crop survival rate.
Detailed description of the invention
Through effective chemical detection, chemical flotation phosphorus tailing composition is mainly calcium sulfate, and pH value is 3.5, and content of beary metal is
Background rank, not containing organic pollutants etc., its concrete composition is as shown in table 1；Therefore can change as one well acidity
Promote for good dose, be used for for administering salt-soda soil.China's existing salt-soda soil area is about 99,000,000 hectares, along with coastal greatly
The propelling of exploitation, area is also in constantly increasing.
Table 1 chemical flotation phosphorus tailing main component (w/10-2)
Soil conditioner in the present invention is according to necessarily with bioactive carbon, weathered coal, phosphorous chemical industry tailing, Kaolin for raw material
The irregular solid particle mixture of proportions；Wherein bioactive carbon is porous, and specific surface area is big, is conducive to increasing
Add water absorption and the aeration of soil, be effectively improved soil physico-chemical property, increase plant products；The humic acids of weathered coal has tune
The pH value of joint soil, reduces in soil water-soluble cationic and prevents the effects such as the salinization of soil；In phosphorous chemical industry tailing, height contains
The calcium ion of amount can replace out the sodium ion in soil, reduces soil alkalinity, is maintaining stablizing of crop biofilm structure simultaneously,
Keeping playing an important role in cell integrity, sulfur is to constitute protein and the indispensable composition of enzyme, and phosphorous chemical industry tailing can
Sufficient calcium element sulphur is provided for plant growth.Ridge soil is made containing substantial amounts of sial element, and element silicon is improving crop disease-resistant, resisting
Lodging and resistance and suppression transpiration have important function.
The present invention is further elaborated for specific embodiment.
Embodiment 1
In the present embodiment, the soil conditioner based on the utilization of phosphorous chemical industry tailing secondary of the preparation present invention is 100kg, concrete step
Suddenly it is:
Step one, use corn straw, wheat stalk, sesbania straw, broomcorn straw with in rice straw any one or several
Plant as raw material, the ardent carbonization 2-3h that solves, prepared biological activated carbon at temperature is 500 DEG C to 700 DEG C；
Step 2, it is powder by biological activated carbon, phosphorous chemical industry tailing, weathered coal and Kaolin mechanical activation comminution respectively, and dries；
Used phosphorous chemical industry tailing includes calcium oxide 35% by percentage to the quality, sulfur trioxide 60%, silicon dioxide 2%, oxygen
Change aluminum 0.3%, ferrum oxide 0.1%, magnesium oxide 0.03%；In addition, phosphorous chemical industry tailing may also contain other impurity, typically
In the case of, have no effect on aforesaid ingredients and play a role in soil conditioner；
Step 3, weigh the biological activated carbon 24kg of dry powder, phosphorous chemical industry tailing 8 kg, weathered coal 20 kg and kaolinite
Soil 48 kg uniformly mix；
The impurity mixed in mixed process is not counted in gross mass, and actual mass may slightly float；Existed by the raw material of powder
Having dried before mixing, therefore its contained moisture is not counted in aforesaid quality.
Embodiment 2
In the present embodiment, the soil conditioner based on the utilization of phosphorous chemical industry tailing secondary of the preparation present invention is 300kg, concrete step
Suddenly it is:
Step one, use corn straw, wheat stalk, sesbania straw, broomcorn straw with in rice straw any one or several
Plant as raw material, the ardent carbonization 2-3h that solves, prepared biological activated carbon at temperature is 500 DEG C to 700 DEG C；
Step 2, it is powder by biological activated carbon, phosphorous chemical industry tailing, weathered coal and Kaolin mechanical activation comminution respectively, and dries；
Wherein, wherein the humic acids content in weathered coal more than more than the 30% of weathered coal gross mass；It addition, used phosphorous chemical industry tailing
Include calcium oxide 45% by percentage to the quality, sulfur trioxide 50%, silicon dioxide 6%, aluminium oxide 0.1%, ferrum oxide
0.3%, magnesium oxide 0.01%；In addition, phosphorous chemical industry tailing may also contain other impurity, generally, has no effect on
Aforesaid ingredients plays a role in soil conditioner；
Step 3, weigh the biological activated carbon 165kg of dry powder, phosphorous chemical industry tailing 17 kg, weathered coal 47kg and kaolinite
Soil 71 kg uniformly mix.
The impurity mixed in mixed process is not counted in gross mass, and actual mass may slightly float；Former by powder
Material has dried, and therefore its contained moisture is not counted in aforesaid quality.
Embodiment 3
In the present embodiment, the soil conditioner based on the utilization of phosphorous chemical industry tailing secondary of the preparation present invention is 500kg, concrete step
Suddenly it is:
Step one, use corn straw, wheat stalk, sesbania straw, broomcorn straw with in rice straw any one or several
Plant as raw material, the ardent carbonization 2-3h that solves, prepared biological activated carbon at temperature is 500 DEG C to 700 DEG C；
Step 2, it is powder by biological activated carbon, phosphorous chemical industry tailing, weathered coal and Kaolin mechanical activation comminution respectively, and dries；
Wherein, wherein the humic acids content in weathered coal more than more than the 30% of weathered coal gross mass；It addition, used phosphorous chemical industry tailing
Include calcium oxide 40.72% by percentage to the quality, sulfur trioxide 54.81%, silicon dioxide 3.47%, aluminium oxide
0.15%, ferrum oxide 0.16%, magnesium oxide 0.015%；In addition, phosphorous chemical industry tailing may also contain other impurity, typically
In the case of, have no effect on aforesaid ingredients and play a role in soil conditioner；
Step 3, weigh the biological activated carbon 192kg of dry powder, phosphorous chemical industry tailing 20kg, weathered coal 115kg and kaolinite
Soil 173 kg uniformly mix.
The impurity mixed in mixed process is not counted in gross mass, and actual mass may slightly float；Former by powder
Material has dried, and therefore its contained moisture is not counted in aforesaid quality.
Embodiment 4
The present embodiment is at salt by soil conditioner based on the utilization of phosphorous chemical industry tailing secondary prepared in above three embodiment
Carrying out applying experiment, the feature that its principle utilizes phosphorus ore dressing tailing acid realizes fall alkali, simultaneously its main component calcium sulfate alkali
In Ca2+The Na in soil can be displaced+Reduce saline and alkaline, it is achieved fall alkali salt discharge；Add biological activated carbon and can promote soil
Earth crumb structure is formed, and reduces the soil weight, increases permeability, improves salt-soda soil physical attribute；Add weathered coal can increase
Soil humic acid content, provides necessary nutrient for growth, promotes alkaline land soil ripening.Specific experiment method is as follows:
Step one, field being watered in advance, soil is deep ploughed；
Step 2, under soil moisture regime, modifying agent is spread fertilizer over the fields in the fields uniformly；The usage amount on every mu of ground is 150kg；
Step 3, is ploughed shallowly in soil, modifying agent is turned over and buries, is repeatedly turned in soil, carry out plantation after 3 days and make
Thing；
Using method based on above-mentioned modifying agent, inventor has carried out 1 year left side on the coastal new Climacteric symptoms such as Nantong, Yancheng
Right popularization test, soil total salt content declines 24.5%～32.3%, and pH decreased 0.～0.3, crop yield is increased production
Amplitude is up to 21%；
The biological activated carbon in modifying agent raw material and phosphorous chemical industry tailing in the present invention are agricultural wastes and industrial waste respectively
Thing, raw material inherently twice laid, and it is wide, with low cost to originate；After biological activated carbon is manured into soil, by two in biomass
Carbonoxide is fixed in the middle of soil, becomes plant food, reduces methane, the discharge of carbon dioxide isothermal chamber gas, can be effective
Alleviate climate warming.Modifying agent all the components can be with natural decomposition or be absorbed by plants, noresidue in soil, no in soil
Soil secondary pollution can be brought.
Than that described above, in addition it is also necessary to explanation is " embodiment ", " another enforcement spoken of in this manual
Example ", " embodiment " etc., refer to combine specific features, structure or the feature that this embodiment describes and be included in the application and summarize
Property describe at least one embodiment in.The most multiple local appearance statement of the same race is not necessarily to refer to same reality
Execute example.Furthermore, it is understood that combine any embodiment when describing a specific features, structure or feature, to be advocated is knot
Close other embodiments and also fall within the scope of the present invention to realize this feature, structure or feature.
Although reference be made herein to invention has been described for the multiple explanatory embodiment of the present invention, however, it is to be understood that
Those skilled in the art can be designed that a lot of other amendments and embodiment, and these amendments and embodiment will fall in this Shen
Within spirit disclosed in please and spirit.More specifically, in the range of this disclosure and claim, can be right
The building block of theme composite configuration and/or layout carry out multiple modification and improvement.Except building block and/or layout are carried out
Modification and improve outside, to those skilled in the art, other purposes also will be apparent from.
Claims (5)
1. the soil conditioner utilized based on phosphorous chemical industry tailing secondary, it is characterised in that: described soil conditioner includes
Biological activated carbon by quality ratio 30 to 70 parts, weathered coal 20 to 30 parts, phosphorous chemical industry tailing 30 to 60 parts, Kaolin 5 to 10
Part, described phosphorous chemical industry tailing include calcium oxide 35% to 45% by percentage to the quality, sulfur trioxide 50% to 60%, two
Silicon oxide 2% to 6%, aluminium oxide 0.1% to 0.3%, ferrum oxide 0.1% to 0.3%, magnesium oxide 0.01% to 0.03%.
The soil conditioner utilized based on phosphorous chemical industry tailing secondary the most according to claim 1, it is characterised in that: described wind
Change the humic acids content in coal more than more than the 30% of weathered coal gross mass.
The soil conditioner utilized based on phosphorous chemical industry tailing secondary the most according to claim 1, it is characterised in that: described life
Thing activated carbon is
Raw material is made.
4. the preparation side of the soil conditioner utilized based on phosphorous chemical industry tailing secondary described in a claims 1 to 3 any one
Method, it is characterised in that described method comprises the steps:
It is former for using corn straw, wheat stalk, sesbania straw, broomcorn straw and any one or a few in rice straw
Material, under temperature is 500 to 700 degrees Celsius, ardent solution carbonization 2 to 3 hours, prepare biological activated carbon；
It is powder by biological activated carbon, phosphorous chemical industry tailing, weathered coal and Kaolin mechanical activation comminution respectively, and dries；
Weigh the biological activated carbon of dry powder in mass ratio, phosphorous chemical industry tailing, weathered coal uniformly mix i.e. with Kaolin
Become.
Method the most according to claim 4, it is characterised in that: described dry powdered biological activated carbon, phosphorous chemical industry tail
Material, weathered coal are uniformly mixed by blender with Kaolin.
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| CN201610500016.8A CN105950156A (en) | 2016-06-30 | 2016-06-30 | Soil conditioner based on secondary use of chemical phosphorus tailings and preparation method of soil conditioner |
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| CN201610500016.8A CN105950156A (en) | 2016-06-30 | 2016-06-30 | Soil conditioner based on secondary use of chemical phosphorus tailings and preparation method of soil conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110387240A (en) * | 2019-06-21 | 2019-10-29 | 广西博世科环保科技股份有限公司 | It is a kind of for repairing the passivator and its application method of more metal combined contamination soils |
| CN113621376A (en) * | 2021-07-21 | 2021-11-09 | 湖南农业大学 | Soil conditioner, preparation method thereof and soil conditioning method |
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Application publication date: 20160921 |