CN108070384A - It is a kind of using red mud as acidic soil conditioner of matrix and preparation method thereof - Google Patents
It is a kind of using red mud as acidic soil conditioner of matrix and preparation method thereof Download PDFInfo
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- CN108070384A CN108070384A CN201711447495.2A CN201711447495A CN108070384A CN 108070384 A CN108070384 A CN 108070384A CN 201711447495 A CN201711447495 A CN 201711447495A CN 108070384 A CN108070384 A CN 108070384A
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- red mud
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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
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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Abstract
The present invention provides a kind of using red mud as acidic soil conditioner of matrix and preparation method thereof.It is described using red mud as the acidic soil conditioner of matrix, be mainly prepared by the raw material of following mass percent：Changed red mud 70% ~ 80%, lime 5% ~ 10%, carboxymethyl cellulose 1% ~ 3%, sludge powder 5 ~ 7%, iron chloride 2% ~ 4%, nitrogen, phosphorus and potassium fertilizer 5% ~ 8%.The acidic soil conditioner of the present invention derives from a wealth of sources using red mud as primary raw material, is at low cost, simple for process, and on the one hand can significantly reduce the soil weight, increases soil macro aggregate ratio, improves fertilizer nutrient utilization, effectively avoids soil compaction phenomenon；On the other hand, effectively the acid of soil is solved the problems, such as.Red mud is especially made to obtain recycling rationally to utilize, improves resource utilization, while reduces red mud occupation of land, reduces environmental pollution, there is preferable Social benefit and economic benefit.
Description
Technical field
The present invention relates to alumina laterite recycling fields, are specifically a kind of using red mud as the acid soil tune of matrix
Manage agent and preparation method thereof.
Background technology
Red mud is to extract the bronzing pureed solid industrial waste generated after aluminium oxide in aluminium industry processed from bauxite.One
As it is average often produce 1 ton of aluminium oxide, incidentally generate 1.0~2.0 tons of red muds.
As the 4th big alumina producing state of the world, the red mud discharged every year is up to millions of tons for China.Substantial amounts of red mud is not
The sufficiently effective utilization of energy can only rely on the stockyard of large area to stack, the accumulation not only landed property resource, but also red mud of red mud
In alkali, sodium, aluminium, fluoride and rare metal etc., it will as percolate enters underground water, certain wound is caused to human body
Evil.In addition, the high alkalinity of red mud also can contaminant water, people and animals and plants are generated with certain harm.The generation of red mud is to the mankind
Production, life cause many influences directly or indirectly, it is real so reduce yield and the harm of red mud to greatest extent
Now by all kinds of means, the recycling of big quantity it is extremely urgent.Therefore how red mud to be turned waste into wealth, waste utilization, change is harmful to have
Profit reduces the concern that all circles' researcher has been caused to naturally polluting.
It is influenced by many factors such as southern climates, acid rain, fertilizer applications, Farmland Soil Acidification is inevitable.By south
The influence of the damp and hot weather conditions in side, soil silicate mineral and secondary mineral weathering are very fast, the anionic currents such as calcium, magnesium in soil
It loses, and aluminium hydroxide, oxygen silicon oxide colloid accumulate the release H in the form of manosil AS in the soil+, soil is caused constantly to be acidified；With
Atmosphere pollution caused by process of industrialization, causes the frequency of acid rain to increase.
Numerous studies have been carried out to the comprehensive utilization of red mud in recent years both at home and abroad, red mud has been ground for what acid soil was administered
Study carefully also more but most of also in the experimental stage, red mud addition content is less, and the utilizing status of red mud is unsatisfactory.Therefore,
It stills need to be modified existing red mud, to provide the approach that a kind of new red mud administers acid soil.
The content of the invention
It is an object of the invention to provide a kind of using red mud as acidic soil conditioner of matrix and preparation method thereof, with solution
Problem present in certainly above-mentioned background technology.
The technical proposal of the invention is realized in this way：
It is a kind of using red mud as the acidic soil conditioner of matrix, be mainly prepared by the raw material of following mass percent：It is modified
Red mud 70% ~ 80%, lime 5% ~ 10%, carboxymethyl cellulose 1% ~ 3%, sludge powder 5 ~ 7%, iron chloride 2% ~ 4%, nitrogen, phosphorus and potassium fertilizer 5% ~
8%。
Preferably, it is of the present invention using red mud as the acidic soil conditioner of matrix, mainly by following mass percent
Raw material is prepared：Changed red mud 70%, lime 10%, carboxymethyl cellulose 3%, sludge powder 7%, iron chloride 2%, nitrogen, phosphorus and potassium fertilizer 8%.
Preferably, it is of the present invention using red mud as the acidic soil conditioner of matrix, mainly by following mass percent
Raw material is prepared：Changed red mud 75%, lime 8%, carboxymethyl cellulose 2%, sludge powder 6%, iron chloride 3%, nitrogen, phosphorus and potassium fertilizer 6%.
Preferably, it is of the present invention using red mud as the acidic soil conditioner of matrix, mainly by following mass percent
Raw material is prepared：Changed red mud 80%, lime 5%, carboxymethyl cellulose 1%, sludge powder 5%, iron chloride 4%, nitrogen, phosphorus and potassium fertilizer 5%.
Preferably, the changed red mud is prepared by following steps：
A. red mud Tailings Slurry is sent into tank diameter, 3% ~ 5% gypsum of red mud amount of solid is added under stirring；
B. ore pulp is sent into thickener and is concentrated after step A is stirred, and 2% ~ 4% bodied ferric sulfate of red mud amount of solid is added to
In thickener；
C. step B thickener underflows feeding ceramic filter is filtered, obtains 70% ~ 75% changed red mud of underflow density.
It is a kind of using red mud as the preparation method of the acidic soil conditioner of matrix, comprise the following steps：
（1）By each component raw material by weight percent：Changed red mud 70% ~ 80%, lime 5% ~ 10%, sludge powder 5 ~ 7%, iron chloride
2% ~ 4%, nitrogen, phosphorus and potassium fertilizer 5% ~ 8% is uniformly mixed, and obtains mixture；
（2）1% ~ 3% carboxymethyl cellulose is added in mixture, is granulated, obtains shaped granule；
（3）By step（2）Shaped granule is dried, and moisture is less than 8% to get the acidic soil conditioner using red mud as matrix.
Preferably, the step（2）The grain size of shaped granule is 3mm ~ 5mm.
Preferably, the step（3）Drying temperature is 50 DEG C ~ 70 DEG C, time 1h ~ 2h.
Beneficial effects of the present invention are：
The acidic soil conditioner of the present invention derives from a wealth of sources using red mud as primary raw material, is at low cost, simple for process, Er Qieyi
Aspect can significantly reduce the soil weight, increase soil macro aggregate ratio, improve fertilizer nutrient utilization, effectively avoid soil
Hardened phenomenon；On the other hand, effectively the acid of soil is solved the problems, such as.Red mud is especially made to obtain recycling rationally to utilize, is improved
Resource utilization, while red mud occupation of land is reduced, it reduces environmental pollution, there is preferable Social benefit and economic benefit.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that implement describedly
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without making creative work belong to the model that the present invention protects
It encloses.
Embodiment 1
A kind of acidic soil conditioner using red mud as matrix is present embodiments provided, mainly by the raw material of following mass percent
It is prepared：Changed red mud 70%, lime 10%, carboxymethyl cellulose 3%, sludge powder 7%, iron chloride 2%, nitrogen, phosphorus and potassium fertilizer 8%.
Wherein, the changed red mud is prepared by following steps：
A. red mud Tailings Slurry is sent into tank diameter, 3% gypsum of red mud amount of solid is added under stirring；
B. ore pulp is sent into thickener and is concentrated after step A is stirred, and 2% bodied ferric sulfate of red mud amount of solid is added to dense
In contracting machine；
C. step B thickener underflows feeding ceramic filter is filtered, obtains 70% changed red mud of underflow density.
It is described using red mud as the preparation method of the acidic soil conditioner of matrix, comprise the following steps：
（1）By each component raw material by weight percent：Changed red mud 70%, lime 10%, sludge powder 7%, iron chloride 2%, N P and K
Fertilizer 8% is uniformly mixed, and obtains mixture；
（2）3% carboxymethyl cellulose is added in mixture, is granulated, obtains grain size as 3mm ~ 5mm shaped granules；
（3）By step（2）Shaped granule is dried, and drying temperature is 50 DEG C, and time 2h moisture is less than 7% to get using red mud as matrix
Acidic soil conditioner.
Embodiment 2
A kind of acidic soil conditioner using red mud as matrix is present embodiments provided, mainly by the raw material of following mass percent
It is prepared：Changed red mud 75%, lime 8%, carboxymethyl cellulose 2%, sludge powder 6%, iron chloride 3%, nitrogen, phosphorus and potassium fertilizer 6%.
Wherein, the changed red mud is prepared by following steps：
A. red mud Tailings Slurry is sent into tank diameter, 4% gypsum of red mud amount of solid is added under stirring；
B. ore pulp is sent into thickener and is concentrated after step A is stirred, and 3% bodied ferric sulfate of red mud amount of solid is added to dense
In contracting machine；
C. step B thickener underflows feeding ceramic filter is filtered, obtains 72% changed red mud of underflow density.
It is described using red mud as the preparation method of the acidic soil conditioner of matrix, comprise the following steps：
（1）By each component raw material by weight percent：Changed red mud 75%, lime 8%, sludge powder 6%, iron chloride 3%, nitrogen, phosphorus and potassium fertilizer
6% is uniformly mixed, and obtains mixture；
（2）2% carboxymethyl cellulose is added in mixture, is granulated, obtains grain size as 3mm ~ 5mm shaped granules；
（3）By step（2）Shaped granule is dried, and drying temperature is 60 DEG C, and time 1.5h moisture is less than 6% to get using red mud as base
The acidic soil conditioner of matter.
Embodiment 3
A kind of acidic soil conditioner using red mud as matrix is present embodiments provided, mainly by the raw material of following mass percent
It is prepared：Changed red mud 80%, lime 5%, carboxymethyl cellulose 1%, sludge powder 5%, iron chloride 4%, nitrogen, phosphorus and potassium fertilizer 5%.
Wherein, the changed red mud is prepared by following steps：
A. red mud Tailings Slurry is sent into tank diameter, 5% gypsum of red mud amount of solid is added under stirring；
B. ore pulp is sent into thickener and is concentrated after step A is stirred, and 4% bodied ferric sulfate of red mud amount of solid is added to dense
In contracting machine；
C. step B thickener underflows feeding ceramic filter is filtered, obtains 75% changed red mud of underflow density.
It is described using red mud as the preparation method of the acidic soil conditioner of matrix, comprise the following steps：
（1）By each component raw material by weight percent：Changed red mud 80%, lime 5%, sludge powder 5%, iron chloride 4%, nitrogen, phosphorus and potassium fertilizer
5% is uniformly mixed, and obtains mixture；
（2）1% carboxymethyl cellulose is added in mixture, is granulated, obtains grain size as 3mm ~ 5mm shaped granules；
（3）By step（2）Shaped granule is dried, and drying temperature is 70 DEG C, and time 1h moisture is less than 5% to get using red mud as matrix
Acidic soil conditioner.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention god.
Claims (8)
1. it is a kind of using red mud as the acidic soil conditioner of matrix, mainly it is prepared by the raw material of following mass percent：Change
Property red mud 70% ~ 80%, lime 5% ~ 10%, carboxymethyl cellulose 1% ~ 3%, sludge powder 5 ~ 7%, iron chloride 2% ~ 4%, nitrogen, phosphorus and potassium fertilizer 5% ~
8%。
2. it is according to claim 1 using red mud as the acidic soil conditioner of matrix, mainly by following mass percent
Raw material is prepared：Changed red mud 70%, lime 10%, carboxymethyl cellulose 3%, sludge powder 7%, iron chloride 2%, nitrogen, phosphorus and potassium fertilizer 8%.
3. it is according to claim 1 using red mud as the acidic soil conditioner of matrix, mainly by following mass percent
Raw material is prepared：Changed red mud 75%, lime 8%, carboxymethyl cellulose 2%, sludge powder 6%, iron chloride 3%, nitrogen, phosphorus and potassium fertilizer 6%.
4. it is according to claim 1 using red mud as the acidic soil conditioner of matrix, mainly by following mass percent
Raw material is prepared：Changed red mud 80%, lime 5%, carboxymethyl cellulose 1%, sludge powder 5%, iron chloride 4%, nitrogen, phosphorus and potassium fertilizer 5%.
5. according to any one of claim 1-4 using red mud as the acidic soil conditioner of matrix, it is characterised in that：Institute
Changed red mud is stated to prepare by following steps：
A. red mud Tailings Slurry is sent into tank diameter, 3% ~ 5% gypsum of red mud amount of solid is added under stirring；
B. ore pulp is sent into thickener and is concentrated after step A is stirred, and 2% ~ 4% bodied ferric sulfate of red mud amount of solid is added to
In thickener；
C. step B thickener underflows feeding ceramic filter is filtered, obtains 70% ~ 75% changed red mud of underflow density.
6. it is a kind of using red mud as the preparation method of the acidic soil conditioner of matrix, comprise the following steps：
（1）By each component raw material by weight percent：Changed red mud 70% ~ 80%, lime 5% ~ 10%, sludge powder 5 ~ 7%, iron chloride
2% ~ 4%, nitrogen, phosphorus and potassium fertilizer 5% ~ 8% is uniformly mixed, and obtains mixture；
（2）1% ~ 3% carboxymethyl cellulose is added in mixture, is granulated, obtains shaped granule；
（3）By step（2）Shaped granule is dried, and moisture is less than 8% to get the acidic soil conditioner using red mud as matrix.
It is 7. according to claim 6 using red mud as the preparation method of the acidic soil conditioner of matrix, it is characterised in that：Institute
State step（2）The grain size of shaped granule is 3mm ~ 5mm.
It is 8. according to claim 6 using red mud as the preparation method of the acidic soil conditioner of matrix, it is characterised in that：Institute
State step（3）Drying temperature is 50 DEG C ~ 70 DEG C, time 1h ~ 2h.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575935A (en) * | 2019-02-14 | 2019-04-05 | 江西省农业科学院土壤肥料与资源环境研究所 | A kind of Red paddy field soil conditioner that per mu yield can be improved |
| CN110590470A (en) * | 2019-08-23 | 2019-12-20 | 湖南芷兰生态环境建设有限公司 | Acid mine restoration matrix modifier and preparation method thereof |
| CN113020242A (en) * | 2021-03-11 | 2021-06-25 | 中铝环保生态技术(湖南)有限公司 | Fluorine-contaminated soil remediation agent and laboratory application method |
| CN111269724B (en) * | 2020-03-10 | 2021-12-24 | 中国科学院合肥物质科学研究院 | Preparation method of acidic soil remediation agent, prepared soil remediation agent and application |
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| CN102618291A (en) * | 2012-03-14 | 2012-08-01 | 重庆绿色智能技术研究院 | Composition used for controlling loss of phosphorus in soil and preparation method of composition |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575935A (en) * | 2019-02-14 | 2019-04-05 | 江西省农业科学院土壤肥料与资源环境研究所 | A kind of Red paddy field soil conditioner that per mu yield can be improved |
| CN109575935B (en) * | 2019-02-14 | 2020-11-17 | 江西省农业科学院土壤肥料与资源环境研究所 | Red-loam-type paddy field soil regulator capable of improving yield per mu |
| CN110590470A (en) * | 2019-08-23 | 2019-12-20 | 湖南芷兰生态环境建设有限公司 | Acid mine restoration matrix modifier and preparation method thereof |
| CN111269724B (en) * | 2020-03-10 | 2021-12-24 | 中国科学院合肥物质科学研究院 | Preparation method of acidic soil remediation agent, prepared soil remediation agent and application |
| CN113020242A (en) * | 2021-03-11 | 2021-06-25 | 中铝环保生态技术(湖南)有限公司 | Fluorine-contaminated soil remediation agent and laboratory application method |
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Application publication date: 20180525 |