CN108064662A - A kind of organic magnetic planting soil and preparation method thereof - Google Patents
A kind of organic magnetic planting soil and preparation method thereof Download PDFInfo
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- CN108064662A CN108064662A CN201711449877.9A CN201711449877A CN108064662A CN 108064662 A CN108064662 A CN 108064662A CN 201711449877 A CN201711449877 A CN 201711449877A CN 108064662 A CN108064662 A CN 108064662A
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Abstract
The present invention provides a kind of organic magnetized planting soil and preparation method thereof, the organic magnetized planting soil is mainly prepared by the raw material of following mass ratio：Sludge 100 ~ 130：Magnetic active carbon 30 ~ 40：Dealkalize red mud 45 ~ 55：Turfy soil 10 ~ 15, a kind of organic magnetized planting soil preparation method comprise the following steps：（1）It is 100 ~ 130 in mass ratio by sludge, magnetic active carbon, dealkalize red mud, turfy soil：30~40：45~55：10 ~ 15 carry out mixing, obtain mixture；（2）By step（1）Mixture carries out aerobic compost maturity, decomposed 12 ~ 14 days, obtains planting soil.The invention enables stalk, dolomite waste residue, phosphorus tailing, iron tailings, red muds to be widely applied in abandoned mine, the problem of not only solving land occupation resource caused by tailing is largely stored up and pollution environment, also achieve the recycling of tailing, turn waste into wealth, improve the effective rate of utilization of resource, recycling sludge, minimizing, stabilisation, innoxious application are realized, it is energy saving, reduce manufacturing cost.
Description
Technical field
The present invention relates to planting soil preparing technical fields, are specifically a kind of organic magnetic planting soil and preparation method thereof.
Background technology
Mine Solid Wastes refer to include mining generated barren rock and the ore institute after smelting is selected to produce in the process
The tailing or waste residue of generation, to measure big, complex treatment process as a great problem of environmental protection.And sludge is as sewage
The by-product of processing, complicated component contain sex pheromone, parasitic ovum, poisonous and hazardous heavy metal and substantial amounts of difficult drop
Substance is solved, such as deals with improperly, secondary pollution easily is caused to environment.Mine Solid Wastes and sludge is studied to carry out as resource
Efficient comprehensive utilization, can not only improve the ecological environment in mine, but also can make full use of the useful component in discarded object, change give up into
Treasured has realistic meaning to alleviating the increasingly serious environmental problem in China.
At present, what general planting was native matches somebody with somebody Preparation Method mainly with the raw materials such as zeolite, biological organic fertilizer, turfy soil, perlite, choosing
With Mine Solid Wastes and sludge, decomposed manure systems such as the iron tailings of magnetizing roast, phosphorus tailing, dolomite waste residue, red muds
The research data of standby organic magnetic planting soil is less, does not find that pertinent literature is described it also.
The content of the invention
In view of the foregoing, the object of the present invention is to provide a kind of organic magnetic planting soils and preparation method thereof, it is intended to full
The demand of soil moved in improve the original is largely used in sufficient land restoration in mining area, solve Mine Solid Wastes stockpiling occupy substantial amounts of land resource,
The environmental problems such as air, water resource pollution, open sludge reduction, stabilisation, innoxious, recycling thinking, alleviate or
The objective demand of soil moved in improve the original during solution abandoned mine restoration harness.
To achieve these goals, the present invention provides following technical scheme：
A kind of organic magnetized planting soil, is mainly prepared by the raw material of following mass ratio：Sludge 100 ~ 130：Magnetic active carbon
30~40：Dealkalize red mud 45 ~ 55：Turfy soil 10 ~ 15.
A kind of organic magnetized planting soil and preparation method thereof, comprises the following steps：
（1）It is 100 ~ 130 in mass ratio by sludge, magnetic active carbon, dealkalize red mud, turfy soil：30~40：45~55：10 ~ 15 into
Row mixing, obtains mixture；
（2）By step（1）Mixture carries out aerobic compost maturity, decomposed 12 ~ 14 days, obtains planting soil.
Further, the step（1）Sludge is prepared in the following manner：
I. sludge is concentrated by machinery, anaerobic digestion；
II. sludge is sent into 10 mesh sieves and is sieved after step I is digested, and obtains -10 mesh sludge；The moisture percentage in sewage sludge for 78% ~
82%。
Further, the step（1）Dealkalize red mud is prepared in the following manner：
A. red mud is configured to solid-to-liquid ratio as 1：4.5 ~ 5 slurry is pumped into spray type desulphurization tower by screw rod and carries out at dealkalize
Reason；The red mud is Bayer process red mud, and pH value 12 ~ 13, grain size is -200 mesh, and moisture content is 60% ~ 70%;
B. red mud after dealkalize is sent into filter press and carries out filter-press dehydration, obtain dealkalize red mud；The dealkalize red mud moisture content is 35%
~ 40%, pH value is 7.5 ~ 8.0.
Further, the step（1）Magnetic active carbon is prepared in the following manner：
A. it is in mass ratio by dewatered sludge, magnetization iron tailings, phosphorus mine tailing, dolomite waste residue powder, straw powder material：80~100：
12~15：15~20：10~15：15 ~ 20 carry out mixing, obtain mixture；The phosphorus mine tailing is by being ground to phosphorus tailing
Mill, screening are made, and grain size is -200 mesh；The dolomite waste residue powder be by being crushed to dolomite waste residue, ore grinding, sieve
Divide and be made, grain size is -200 mesh；The straw powder material is made by carrying out natural air drying, crushing to stalk, sieving, grain
Footpath is -100 mesh, and moisture content is 15% ~ 20%；
B. step A mixtures feeding high-speed compound comminutor is granulated；
C. step B mixture pelletings are sent into 750 DEG C ~ 800 DEG C retorts and carry out pyrolysis charring；
D., step C is solved to granulation feeding 8000 ~ 9000mT magnetization field strength after carbonizing to magnetize, 10 ~ 12s of magnetization is had
The magnetic active carbon of magnetic temperature stability；The magnetic induction intensity of the magnetizing field is 40 ~ 45 μ T；The magnetic active carbon grain size is
0.5 ~ 1mm, 850 ~ 900m of specific surface area2/ g, 0.25 ~ 0.27cm of Micropore volume3/g。
Further, the step A dewatered sludges are prepared in the following manner：
I. sludge carries out desiccation using fume afterheat after step I is digested, and obtains the sludge that moisture content is less than 10%；
Ii. step i sludge is subjected to ore grinding, screening, obtains grain size as -200 mesh dewatered sludges.
Further, the step A magnetization iron tailings is prepared in the following manner：
1. iron tailings, coal dust are carried out magnetizing roast at a temperature of 600 DEG C ~ 650 DEG C, the coal dust incorporation is iron tailings quality
30% ~ 35%, roast 2 ~ 2.5min；
2. mixture is ground, sieves 1. step is roasted after, obtain grain size and magnetize iron tailings for -200 mesh.
Further, the step flue gas that 1. magnetizing roast and step a magnetizing roasts generate, is sent by pipeline and sprayed
Formula desulfurizing tower carries out desulfurization process, exports the waste heat of flue gas by being used in pipeline feeding step i；In the output flue gas
SO2Concentration is down to 30 ~ 70mg/m3, meet the national standard of flue gas emission.
Further, the step（2）Decomposed condition is：The moisture content of mixture remains 30%-36%, environment temperature
For 20 DEG C -25 DEG C, decomposed temperature is 55 DEG C -70 DEG C, and ventilation quantity is 9 ~ 15m3/（h•t）, heap body oxygen content 5% ~ 15%.
Beneficial effects of the present invention are：
The invention enables stalk, dolomite waste residue, phosphorus tailing, iron tailings, red muds to be widely applied in abandoned mine, no
The problem of addressing only land occupation resource caused by tailing is largely stored up and pollution environment also achieves the recycling profit of tailing
With turning waste into wealth, improve the effective rate of utilization of resource.Application of the sludge in magnetic planting soil, realize recycling sludge,
Minimizing, stabilisation, innoxious application.Meanwhile the flue gas generated in magnetizing roast and sintering process is taken off using red mud
Sulphuring treatment reaches national standard limit of smog release, and the alkalescence reduction of red mud is also made during this, widens the application range of red mud, cigarette
Gas waste heat can be used for sludge drying link, realize the maximization of using energy source in planting soil preparation process, energy saving, reduce
Manufacturing cost.
Description of the drawings
Fig. 1 is a kind of process flow diagram of organic magnetic planting soil and preparation method thereof.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described ground embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained all under the premise of creative work achievement is not made
Other embodiment belongs to the scope of protection of the invention.
The technical problems to be solved by the invention are in view of the deficiencies of the prior art, to provide a kind of organic magnetic planting soil
And preparation method thereof.A kind of organic magnetized planting soil, is mainly prepared by the raw material of following mass ratio：Sludge 100 ~ 130：Magnetic
Property activated carbon 30 ~ 40：Dealkalize red mud 45 ~ 55：Turfy soil 10 ~ 15.
A kind of organic magnetized planting soil and preparation method thereof, comprises the following steps：
（1）It is 100 ~ 130 in mass ratio by sludge, magnetic active carbon, dealkalize red mud, turfy soil：30~40：45~55：10 ~ 15 into
Row mixing, obtains mixture；
（2）By step（1）Mixture carries out aerobic compost maturity, decomposed 12 ~ 14 days, obtains planting soil.
Embodiment 1
A kind of organic magnetized planting soil and preparation method thereof, comprises the following steps：
（1）By iron tailings, coal blending, 2 min of magnetizing roast is carried out at a temperature of 600 DEG C, mixture after roasting is ground
Mill, screening obtain grain size and magnetize iron tailings for -200 mesh, and coal dust incorporation is the 30% of iron tailings quality；
（2）Sludge by machinery is concentrated, anaerobic digestion, a sludge part after digestion is done using fume afterheat
Change, then ore grinding, screening, obtain that moisture content is less than 10%, grain size is obtained for -200 mesh dewatered sludges；
（3）Phosphorus tailing is ground, is sieved, obtains -200 mesh phosphorus mine tailings；
（4）Dolomite waste residue is crushed, ore grinding, screening, obtain -200 mesh dolomite waste residue powders；
（5）Stalk is subjected to natural air drying, crushing, screening, obtains -100 mesh straw powder materials；
（6）It is in mass ratio by dewatered sludge, magnetization iron tailings, phosphorus mine tailing, dolomite waste residue powder, straw powder material：80：12：
15：10：20 carry out mixing, are sent into high-speed compound comminutor and are granulated, and are re-fed into 750 DEG C of retorts and carry out pyrolysis charring,
Feeding 8000mT magnetization field strength will be granulated after pyrolysis charring to magnetize, and be magnetized 10 s, be obtained the magnetism with magnetic temperature stability
Activated carbon；The magnetic induction intensity of the magnetizing field is 40 μ T；The magnetic active carbon grain size be 0.5 mm, specific surface area 900
m2/ g, Micropore volume 0.27；
（7）By step（2）By machinery is concentrated, another part sludge after anaerobic digestion is sent into after concentration, anaerobic digestion
10 mesh sieves are sieved, and obtain -10 mesh sludge；
（8）Red mud is configured to solid-to-liquid ratio as 1：5 slurry is pumped into spray type desulphurization tower by screw rod and carries out dealkalize processing,
Red mud after dealkalize is sent into filter press and carries out filter-press dehydration, obtains dealkalize red mud, pH value 8.0；The red mud is Bayer process
Red mud, pH value 12, grain size are -200 mesh；The spray type desulphurization is by step（2）Magnetizing roast and step（6）Pyrolysis charring generates
Flue gas desulfurization, spray type desulphurization tower is sent by pipeline and carries out desulfurization process, the waste heat for exporting flue gas passes through pipeline and is sent into step
Suddenly（2）In be used；
（9）It is 100 in mass ratio by sludge, magnetic active carbon, dealkalize red mud, turfy soil：40：55：10 carry out mixing, will mix
Material carries out aerobic compost maturity, decomposed 12 days, obtains planting soil.
The content of organic matter is 7.5 g/kg in planting soil made from present implementation, and N-P-K content is respectively 290mg/
Kg, 820mg/kg and 660mg/kg, wherein quick-acting nitrogen contents are 180mg/kg, available phosphorus contents 585mg/kg, available state potassium
Content is 445mg/kg, pH value 8.0, percentage of seedgermination 94%, and every heavy metal index meets the mark of national planting soil
It is accurate.
Embodiment 2
A kind of organic magnetized planting soil and preparation method thereof, comprises the following steps：
（1）By iron tailings, coal blending, 2.3 min of magnetizing roast is carried out at a temperature of 630 DEG C, mixture after roasting is carried out
Grinding, screening obtain grain size and magnetize iron tailings for -200 mesh, and coal dust incorporation is the 32% of iron tailings quality；
（2）Sludge by machinery is concentrated, anaerobic digestion, a sludge part after digestion is done using fume afterheat
Change, then ore grinding, screening, obtain that moisture content is less than 10%, grain size is obtained for -200 mesh dewatered sludges；
（3）Phosphorus tailing is ground, is sieved, obtains -200 mesh phosphorus mine tailings；
（4）Dolomite waste residue is crushed, ore grinding, screening, obtain -200 mesh dolomite waste residue powders；
（5）Stalk is subjected to natural air drying, crushing, screening, obtains -100 mesh straw powder materials；
（6）It is in mass ratio by dewatered sludge, magnetization iron tailings, phosphorus mine tailing, dolomite waste residue powder, straw powder material：90：13：
18：12：18 carry out mixing, are sent into high-speed compound comminutor and are granulated, and are re-fed into 780 DEG C of retorts and carry out pyrolysis charring,
Feeding 8500mT magnetization field strength will be granulated after pyrolysis charring to magnetize, and be magnetized 11 s, be obtained the magnetism with magnetic temperature stability
Activated carbon；The magnetic induction intensity of the magnetizing field is 42 μ T；The magnetic active carbon grain size be 0.8 mm, specific surface area 880
m2/ g, Micropore volume 0.26cm3/g；
（7）By step（2）By machinery is concentrated, another part sludge after anaerobic digestion is sent into after concentration, anaerobic digestion
10 mesh sieves are sieved, and obtain -10 mesh sludge；
（8）Red mud is configured to solid-to-liquid ratio as 1：4.8 slurry is pumped into spray type desulphurization tower by screw rod and carries out at dealkalize
Red mud after dealkalize is sent into filter press and carries out filter-press dehydration, obtains dealkalize red mud, pH value 7.8 by reason；The red mud is Bayer
Method red mud, pH value 12, grain size are -200 mesh；The spray type desulphurization is by step（2）Magnetizing roast and step（6）Pyrolysis charring produces
Raw flue gas desulfurization is sent into spray type desulphurization tower by pipeline and carries out desulfurization process, and the waste heat for exporting flue gas is sent by pipeline
Step（2）In be used；
（9）It is 115 in mass ratio by sludge, magnetic active carbon, dealkalize red mud, turfy soil：38：45：12 carry out mixing, will mix
Material carries out aerobic compost maturity, decomposed 13 days, obtains planting soil.
The content of organic matter is 7.6 g/kg in planting soil made from present implementation, and N-P-K content is respectively 300mg/
Kg, 830mg/kg and 675mg/kg, wherein quick-acting nitrogen contents are 190mg/kg, available phosphorus contents 600mg/kg, available state potassium
Content is 450mg/kg, pH value 7.8, percentage of seedgermination 95%, and every heavy metal index meets the mark of national planting soil
It is accurate.
Embodiment 3
A kind of organic magnetized planting soil and preparation method thereof, comprises the following steps：
（1）By iron tailings, coal blending, 2.5 min of magnetizing roast is carried out at a temperature of 650 DEG C, mixture after roasting is carried out
Grinding, screening obtain grain size and magnetize iron tailings for -200 mesh, and powder incorporation is the 35% of iron tailings quality；
（2）Sludge by machinery is concentrated, anaerobic digestion, a sludge part after digestion is done using fume afterheat
Change, then ore grinding, screening, obtain that moisture content is less than 10%, grain size is obtained for -200 mesh dewatered sludges；
（3）Phosphorus tailing is ground, is sieved, obtains -200 mesh phosphorus mine tailings；
（4）Dolomite waste residue is crushed, ore grinding, screening, obtain -200 mesh dolomite waste residue powders；
（5）Stalk is subjected to natural air drying, crushing, screening, obtains -100 mesh straw powder materials；
（6）It is in mass ratio by dewatered sludge, magnetization iron tailings, phosphorus mine tailing, dolomite waste residue powder, straw powder material：100：15：
20：15：15 carry out mixing, are sent into high-speed compound comminutor and are granulated, and are re-fed into 800 DEG C of retorts and carry out pyrolysis charring,
Feeding 9000mT magnetization field strength will be granulated after pyrolysis charring to magnetize, and magnetize 12s, the magnetism for obtaining having magnetic temperature stability is living
Property charcoal；The magnetic induction intensity of the magnetizing field is 45 μ T；The magnetic active carbon grain size is 1mm, specific surface area 850m2/ g, it is micro-
Hole pore volume 0.25cm3/g；
（7）By step（2）By machinery is concentrated, another part sludge after anaerobic digestion is sent into after concentration, anaerobic digestion
10 mesh sieves are sieved, and obtain -10 mesh sludge；
（8）Red mud is configured to solid-to-liquid ratio as 1：4.5 slurry is pumped into spray type desulphurization tower by screw rod and carries out at dealkalize
Red mud after dealkalize is sent into filter press and carries out filter-press dehydration, obtains dealkalize red mud, pH value 7.5 by reason；The red mud is Bayer
Method red mud, pH value 12, grain size are -200 mesh；The spray type desulphurization is by step（2）Magnetizing roast and step（6）Pyrolysis charring produces
Raw flue gas desulfurization is sent into spray type desulphurization tower by pipeline and carries out desulfurization process, and the waste heat for exporting flue gas is sent by pipeline
Step（2）In be used；
（9）It is 130 in mass ratio by sludge, magnetic active carbon, dealkalize red mud, turfy soil：35：40：15 carry out mixing, will mix
Material carries out aerobic compost maturity, decomposed 14 days, obtains planting soil.
In planting soil made from present implementation the content of organic matter be 7.7g/kg, N-P-K content be respectively 310mg/kg,
840mg/kg and 680mg/kg, wherein quick-acting nitrogen contents are 200mg/kg, available phosphorus contents 615mg/kg, available state potassium content
For 455mg/kg, pH value 7.5, percentage of seedgermination 96%, every heavy metal index meets the standard of national planting soil.
The foregoing is merely the present invention experiment in most preferred embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modifications, equivalent replacements and improvements are made should be included in the protection of the present invention
Within the scope of.
Claims (9)
1. a kind of organic magnetized planting soil, is mainly prepared by the raw material of following mass ratio：Sludge 100 ~ 130：Magnetic activity
Charcoal 30 ~ 40：Dealkalize red mud 45 ~ 55：Turfy soil 10 ~ 15.
2. a kind of organic magnetized planting soil preparation method, comprises the following steps：
（1）It is 100 ~ 130 in mass ratio by sludge, magnetic active carbon, dealkalize red mud, turfy soil：30~40：45~55：10 ~ 15 into
Row mixing, obtains mixture；
（2）By step（1）Mixture carries out aerobic compost maturity, decomposed 12 ~ 14 days, obtains planting soil.
A kind of 3. organic magnetized planting soil preparation method according to claim 2, which is characterized in that the step（1）Sludge
It prepares in the following manner：
I. sludge is concentrated by machinery, anaerobic digestion；
II. sludge is sent into 10 mesh sieves and is sieved after step I is digested, and obtains -10 mesh sludge；The moisture percentage in sewage sludge for 78% ~
82%。
A kind of 4. organic magnetized planting soil preparation method according to claim 2, which is characterized in that the step（1）Dealkalize
Red mud is prepared in the following manner：
A. red mud is configured to solid-to-liquid ratio as 1：4.5 ~ 5 slurry is pumped into spray type desulphurization tower by screw rod and carries out at dealkalize
Reason；The red mud is Bayer process red mud, and pH value 12 ~ 13, grain size is -200 mesh, and moisture content is 60% ~ 70%;
B. red mud after dealkalize is sent into filter press and carries out filter-press dehydration, obtain dealkalize red mud；The dealkalize red mud moisture content is 35%
~ 40%, pH value is 7.5 ~ 8.0.
A kind of 5. organic magnetized planting soil preparation method according to claim 2, which is characterized in that the step（1）It is magnetic
Activated carbon is prepared in the following manner：
A. it is in mass ratio by dewatered sludge, magnetization iron tailings, phosphorus mine tailing, dolomite waste residue powder, straw powder material：80~100：
12~15：15~20：10~15：15 ~ 20 carry out mixing, obtain mixture；The phosphorus mine tailing is by being ground to phosphorus tailing
Mill, screening are made, and grain size is -200 mesh；The dolomite waste residue powder be by being crushed to dolomite waste residue, ore grinding, sieve
Divide and be made, grain size is -200 mesh；The straw powder material is made by carrying out natural air drying, crushing to stalk, sieving, grain
Footpath is -100 mesh, and moisture content is 15% ~ 20%；
B. step A mixtures feeding high-speed compound comminutor is granulated；
C. step B mixture pelletings are sent into 750 DEG C ~ 800 DEG C retorts and carry out pyrolysis charring；
D., step C is solved to granulation feeding 8000 ~ 9000mT magnetization field strength after carbonizing to magnetize, 10 ~ 12s of magnetization is had
The magnetic active carbon of magnetic temperature stability；The magnetic induction intensity of the magnetizing field is 40 ~ 45 μ T；The magnetic active carbon grain size is
0.5 ~ 1mm, 850 ~ 900m of specific surface area2/ g, 0.25 ~ 0.27cm of Micropore volume3/g。
6. magnetic active carbon preparation method according to claim 5, which is characterized in that the step A dewatered sludges by with
It is prepared by under type：
I. sludge carries out desiccation using fume afterheat after step I is digested, and obtains the sludge that moisture content is less than 10%；
Ii. step i sludge is subjected to ore grinding, screening, obtains grain size as -200 mesh dewatered sludges.
7. magnetic active carbon preparation method according to claim 5, which is characterized in that the step A magnetization iron tailings passes through
It is prepared by the following manner：
1. iron tailings, coal dust are carried out magnetizing roast at a temperature of 600 DEG C ~ 650 DEG C, the coal dust incorporation is iron tailings quality
30% ~ 35%, roast 2 ~ 2.5min；
2. mixture is ground, sieves 1. step is roasted after, obtain grain size and magnetize iron tailings for -200 mesh.
8. magnetize iron tailings preparation method according to claim 6, which is characterized in that the step 1. magnetizing roast and step
The flue gas that C charing pyrolysis generates is sent into spray type desulphurization tower by pipeline and carries out desulfurization process, and the waste heat for exporting flue gas passes through pipe
Road is sent into step i and is used；SO in the output flue gas2Concentration is down to 30 ~ 70mg/m3, the country for meeting flue gas emission marks
It is accurate.
A kind of 9. organic magnetized planting soil preparation method according to claim 1, which is characterized in that the step（2）It is decomposed
Condition is：The moisture content of mixture remains 30%-36%, and environment temperature is 20 DEG C -25 DEG C, and decomposed temperature is 55 DEG C -70 DEG C,
Ventilation quantity is 9 ~ 15m3/（h•t）, heap body oxygen content 5% ~ 15%.
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| CN108901535A (en) * | 2018-06-27 | 2018-11-30 | 贵州松桃正大振兴生态农旅开发有限公司 | A kind of implantation methods of peach |
| CN113303198A (en) * | 2021-06-25 | 2021-08-27 | 湖北声荣再生资源利用有限公司 | Culture medium and preparation method and application thereof |
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| CN108064662B (en) | 2019-07-23 |
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