CN108569938A - A kind of slow-release composite fertilizer prepared using industrial slag - Google Patents
A kind of slow-release composite fertilizer prepared using industrial slag Download PDFInfo
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- CN108569938A CN108569938A CN201810339828.8A CN201810339828A CN108569938A CN 108569938 A CN108569938 A CN 108569938A CN 201810339828 A CN201810339828 A CN 201810339828A CN 108569938 A CN108569938 A CN 108569938A
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- industrial slag
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B5/00—Thomas phosphate; Other slag phosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to a kind of slow-release composite fertilizers prepared using industrial slag, are prepared by the raw material of following parts by weight：100 120 parts of activated industrial slag, 20 30 parts of urea, 12 20 parts of ammonium acid fluoride, 20 25 parts of ammonium hydrogen carbonate, 0.3 0.5 parts of potassium chloride, 50 60 parts of humus, 12 20 parts of ammonium hydrogen phosphate, 20 30 parts of adhesive, 50 60 parts of water；Wherein activated industrial slag is by industrial slag, phosphoric acid solution, hydrochloric acid solution by 100 120:20‑30:10 20 mass ratio is prepared.Slow-release composite fertilizer prepared by the present invention, containing the mineral element needed for a large amount of plants in industrial slag, obtains water-soluble trace element, is conducive to plant absorption using activated industrial slag as primary raw material after activated processing；It is mixed with other Nitrogen elements, it is prepared into particle using binder, with good slow release effect, single-dose application discharges number of days up to 80 days or more, meet needs of the plant growing cycle to nitrogen and other trace elements, the fertilizer application frequency of chemical fertilizer is effectively reduced, labour cost and fertilizer application cost are reduced.
Description
Technical field
The present invention relates to composite fertilizer field more particularly to a kind of slow-release composite fertilizers prepared using industrial slag.
Background technology
Industrial slag is the byproduct generated due to coal fired power generation or steel mill, at present mostly by landfill disposal,
Outside the waste for causing economic loss and resource, the secondary pollution of environment is also exacerbated, therefore, industrial slag material is closed
Reason is utilized and is particularly important.On the other hand, in agricultural development, the use of fertilizer is very crucial, can improve crops
Yield, the influence to Grain Growth Situation are also very big.Not only contain a large amount of nitrogen in fertilizer, also contains a large amount of micro-
Secondary element, the type of the trace element needed for the different phase of crop growth also difference.At present about composite fertilizer field
Research there is more patent to occur, the patent of wherein Publication No. CN107098760A discloses a kind of high-effective chemical fertilizer, by carbonic acid
Calcium, amino acid, potassium chloride, humic acid, nitrogenous fertilizer, water-retaining agent, absorbent etc. are prepared, and can well provide needed for plant growth
The element wanted, but this kind of chemical fertilizer needs the number to apply fertilizer more, at least to apply fertilizer 2-4 times, considerably increase in growth cycle
The labour of peasant is born, and increases Fertilizer application cost.Therefore it provides the approach that a kind of industrial slag recycles, gives simultaneously
Required trace element in growing process is given, and the slow-release composite fertilizer of effective time length is that those skilled in the art urgently solve
A technical problem certainly.
Invention content
It is an object of the invention to provide the approach that a kind of industrial slag recycles, while giving institute in growing process
Need trace element, and the slow-release composite fertilizer of effective time length.
The present invention uses following technical scheme：
A kind of slow-release composite fertilizer prepared using industrial slag, is prepared by following raw material in parts by weight：Activation
100-120 parts of industrial slag, 20-30 parts of urea, 12-20 parts of ammonium acid fluoride, 20-25 parts of ammonium hydrogen carbonate, potassium chloride 0.3-0.5
Part, 50-60 parts of humus, 12-20 parts of ammonium hydrogen phosphate, 20-30 parts of adhesive, 50-60 parts of water；Wherein, activated industrial slag is
Industrial slag, phosphoric acid solution, hydrochloric acid solution are pressed into 100-120:20-30:The mass ratio of 10-20 is prepared.
Further, composite fertilizer is the ball that grain size is 2-3mm.
Further, adhesive is one or more of diatomite, high-level laterite, white clay, ceramic clay, pottery mud.
Further, this utilizes slow-release composite fertilizer prepared by industrial slag, is prepared by following steps：
(1) industrial slag activates：Industrial slag is crushed to 60-80 mesh, industrial slag is weighed in mass ratio and phosphoric acid is molten
Liquid is added in reaction kettle and 1-2h is mixed, and adds hydrochloric acid solution and reacts 20-30 minutes, adds potassium phosphate solution to adjust
PH value is saved to 4-6, material takes out drying, obtains activated industrial slag；
(2) prepared by slow-release composite fertilizer：Raw material is weighed in parts by weight, by urea, ammonium acid fluoride, ammonium hydrogen carbonate, chlorination
Potassium, humus, ammonium hydrogen phosphate, which are put into batch mixer, just mix, and batch mixer rotating speed is improved 20-50rpm later, and work is added
Chemical industry slag is mixed again, adds adhesive and water mix eventually, be added in comminutor and be granulated after mixing completely, be granulated
It is put into drying in drier after, obtains slow-release composite fertilizer.
Further, speed of agitator is 200-300rpm in step (1).
Further, phosphoric acid solution a concentration of 5-10mol/L, concentration of hydrochloric acid solution 1-2mol/L in step (1).
Further, just mixed rotating speed is 200-400rpm, mixing time 2-5min in step (2).
Further, it does time as 3-5min, does time eventually as 2-3min again in step (2).
Further, in step (2) it is just mixed, mix again, it is mixed eventually during control temperature between 1-10 DEG C.
Further, drying temperature is 20-40 DEG C in step (2).
The slow-release composite fertilizer of the present invention prepared using industrial slag, is had the advantages that：
(1) slow-release composite fertilizer prepared by the present invention, using activated industrial slag as primary raw material, due to containing in industrial slag
There is the mineral element needed for a large amount of plants, water-soluble trace element is obtained after activated processing, is conducive to plant absorption；It will
Activated industrial slag is mixed with other Nitrogen elements, and particle is prepared into using binder, is had good slow release effect, is once applied
Release number of days after fertilizer met needs of the plant growing cycle to nitrogen and other trace elements up to 80 days or more, to
The fertilizer application frequency of chemical fertilizer is effectively reduced, the use cost of labour cost and chemical fertilizer is reduced.
(2) present invention reduces the cost of material of composite fertilizer, while having widened industrial mine using industrial slag as primary raw material
The application field of slag opened up a new way processing industrial slag, realize the secondary use of resource and the protection to environment.
Specific implementation mode
Below in conjunction with specific embodiment, clear, complete description is carried out to technical scheme of the present invention, it is clear that retouched
The embodiment stated is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, originally
All other embodiment that field those skilled in the art are obtained without making creative work belongs to this
The protection domain of invention.
Embodiment 1
A kind of slow-release composite fertilizer prepared using industrial slag, is prepared by following raw material in parts by weight：Activation
100 parts of industrial slag, 20 parts of urea, 15 parts of ammonium acid fluoride, 20 parts of ammonium hydrogen carbonate, 0.4 part of potassium chloride, 50 parts of humus, phosphoric acid
14 parts of hydrogen ammonium, 25 parts of diatomite, 50 parts of water；Wherein, activated industrial slag be by industrial slag, phosphoric acid solution, hydrochloric acid solution by
100:25:15 mass ratio is prepared.It is prepared by following steps：
(1) industrial slag activates：Industrial slag is crushed to 60-80 mesh, weighs industrial slag and a concentration of in mass ratio
The phosphoric acid solution of 8ml/L, is added in reaction kettle and 1h is mixed, and speed of agitator 220rpm is added and weighed in mass ratio
The hydrochloric acid solution of a concentration of 1mol/L react 30 minutes, addition potassium phosphate solution adjusts pH value to 4, and material takes out drying,
Obtain activated industrial slag；
(2) prepared by slow-release composite fertilizer：Raw material is weighed in parts by weight, by urea, ammonium acid fluoride, ammonium hydrogen carbonate, chlorination
Potassium, humus, ammonium hydrogen phosphate, which are put into batch mixer, just mix, and just mixed rotating speed is 350rpm, mixing time 3min；Later will
Batch mixer rotating speed improves 40rpm, and activated industrial slag is added and carries out mixing 4min again, adds diatomite and water progress is mixed eventually
3min, control temperature is added in comminutor after mixing completely and is granulated, drier is put into after the completion of being granulated at 6 DEG C in mixed process
Middle drying, drying temperature are 35 DEG C, obtain slow-release composite fertilizer.
Embodiment 2
A kind of slow-release composite fertilizer prepared using industrial slag, is prepared by following raw material in parts by weight：Activation
120 parts of industrial slag, 25 parts of urea, 12 parts of ammonium acid fluoride, 23 parts of ammonium hydrogen carbonate, 0.5 part of potassium chloride, 55 parts of humus, phosphoric acid
12 parts of hydrogen ammonium, 20 parts of high-level laterite, 60 parts of water；Wherein, activated industrial slag is by industrial slag, phosphoric acid solution, hydrochloric acid solution
By 120:20:10 mass ratio is prepared.It is prepared by following steps：
(1) industrial slag activates：Industrial slag is crushed to 60-80 mesh, weighs industrial slag and a concentration of in mass ratio
The phosphoric acid solution of 5mol/L, is added in reaction kettle and 1.5h is mixed, and speed of agitator 200rpm is added and claimed in mass ratio
The hydrochloric acid solution of a concentration of 1.5mol/L taken reacts 20 minutes, adds potassium phosphate solution to adjust pH value to 5, material, which takes out, to be dried
It is dry, obtain activated industrial slag；
(2) prepared by slow-release composite fertilizer：Raw material is weighed in parts by weight, by urea, ammonium acid fluoride, ammonium hydrogen carbonate, chlorination
Potassium, humus, ammonium hydrogen phosphate, which are put into batch mixer, just mix, and just mixed rotating speed is 200rpm, mixing time 5min；Later will
Batch mixer rotating speed improves 50rpm, and activated industrial slag is added and carries out mixing 3min again, adds high-level laterite and water progress is mixed eventually
2min, control temperature is added in comminutor after mixing completely and is granulated, drier is put into after the completion of being granulated at 10 DEG C in mixed process
Middle drying, drying temperature are 20 DEG C, obtain slow-release composite fertilizer.
Embodiment 3
A kind of slow-release composite fertilizer prepared using industrial slag, is prepared by following raw material in parts by weight：Activation
110 parts of industrial slag, 28 parts of urea, 16 parts of ammonium acid fluoride, 25 parts of ammonium hydrogen carbonate, 0.3 part of potassium chloride, 60 parts of humus, phosphoric acid
18 parts of hydrogen ammonium, 30 parts of white clay, 55 parts of water；Wherein, activated industrial slag be by industrial slag, phosphoric acid solution, hydrochloric acid solution by
110:30:20 mass ratio is prepared.It is prepared by following steps：
(1) industrial slag activates：Industrial slag is crushed to 60-80 mesh, weighs industrial slag and a concentration of in mass ratio
The phosphoric acid solution of 10mol/L, is added in reaction kettle and 2h is mixed, and speed of agitator 260rpm is added and claimed in mass ratio
The hydrochloric acid solution of a concentration of 2mol/L taken reacts 24 minutes, adds potassium phosphate solution to adjust pH value to 6, material, which takes out, to be dried
It is dry, obtain activated industrial slag；
(2) prepared by slow-release composite fertilizer：Raw material is weighed in parts by weight, by urea, ammonium acid fluoride, ammonium hydrogen carbonate, chlorination
Potassium, humus, ammonium hydrogen phosphate, which are put into batch mixer, just mix, and just mixed rotating speed is 400rpm, mixing time 2min；Later will
Batch mixer rotating speed improves 20rpm, and activated industrial slag is added and carries out mixing 3min again, adds white clay and water progress is mixed eventually
2.5min, control temperature is added in comminutor after mixing completely and is granulated, drying is put into after the completion of being granulated at 1 DEG C in mixed process
Dry in device, drying temperature is 40 DEG C, obtains slow-release composite fertilizer.
Embodiment 4
A kind of slow-release composite fertilizer prepared using industrial slag, is prepared by following raw material in parts by weight：Activation
120 parts of industrial slag, 30 parts of urea, 20 parts of ammonium acid fluoride, 25 parts of ammonium hydrogen carbonate, 0.3 part of potassium chloride, 60 parts of humus, phosphoric acid
20 parts of hydrogen ammonium, 20 parts of ceramic clay, 50 parts of water；Wherein, activated industrial slag be by industrial slag, phosphoric acid solution, hydrochloric acid solution by
120:20:10 mass ratio is prepared.It is prepared by following steps：
(1) industrial slag activates：Industrial slag is crushed to 60-80 mesh, weighs industrial slag and a concentration of in mass ratio
The phosphoric acid solution of 7mol/L, is added in reaction kettle and 1h is mixed, and speed of agitator 300rpm is added and weighed in mass ratio
The hydrochloric acid solution of a concentration of 2mol/L react 30 minutes, addition potassium phosphate solution adjusts pH value to 4, and material takes out drying,
Obtain activated industrial slag；
(2) prepared by slow-release composite fertilizer：Raw material is weighed in parts by weight, by urea, ammonium acid fluoride, ammonium hydrogen carbonate, chlorination
Potassium, humus, ammonium hydrogen phosphate, which are put into batch mixer, just mix, and just mixed rotating speed is 300rpm, mixing time 4min；Later will
Batch mixer rotating speed improves 30rpm, and activated industrial slag is added and carries out mixing 5min again, adds ceramic clay and water progress is mixed eventually
3min, control temperature is added in comminutor after mixing completely and is granulated, drier is put into after the completion of being granulated at 3 DEG C in mixed process
Middle drying, drying temperature are 30 DEG C, obtain slow-release composite fertilizer.
Slow-release composite fertilizer obtained in embodiment 1-4 is subjected to active ingredient volatilization time test, weighs 10- respectively
20g carries out 20-30 group parallel tests, is then placed in insulating box, tests trace element and nitrogen in each sample weekly
Content reach time such as 1 institute of table when minimum content in each group sample until content stops test less than percent for the moment
Show.
1 slow-release composite fertilizer release time result of table
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Release time/day | 84 | 86 | 92 | 82 |
As seen from table, the effective time of slow-release composite fertilizer produced by the present invention is compound with conventional extended release at 80 days or more
The release time of fertilizer 45 days or so is compared, and duration greatly increases, and needs the time cycle of nutriment almost poor with crops
Seldom, there is excellent slow release effect, the fertilizer application frequency of chemical fertilizer can be effectively reduced, greatly reduce the labour cost of peasant, together
When decrease the usage amount of chemical fertilizer, reduce the use cost of chemical fertilizer, and effective protection environment.Meanwhile the present invention is with work
Industry slag is primary raw material, realizes and is efficiently used to secondary resource, has widened the application field of industrial slag, to handling work
Industry slag opens new method and new way.
The present invention is further described by specific embodiment above, it should be understood that, here specifically
Description, should not be construed as the restriction to the spirit and scope of the invention, and one of ordinary skilled in the art is reading this explanation
The various modifications made to above-described embodiment after book belong to the range that the present invention is protected.
Claims (10)
1. a kind of slow-release composite fertilizer prepared using industrial slag, which is characterized in that prepared by the raw material of following parts by weight
It forms：100-120 parts of activated industrial slag, 20-30 parts of urea, 12-20 parts of ammonium acid fluoride, 20-25 parts of ammonium hydrogen carbonate, potassium chloride
0.3-0.5 parts, 50-60 parts of humus, 12-20 parts of ammonium hydrogen phosphate, 20-30 parts of adhesive, 50-60 parts of water；
Wherein, activated industrial slag is by industrial slag, phosphoric acid solution, hydrochloric acid solution by 100-120:20-30:The matter of 10-20
Amount ratio is prepared.
2. the slow-release composite fertilizer according to claim 1 prepared using industrial slag, which is characterized in that the composite fertilizer
The ball for being 2-3mm for grain size.
3. the slow-release composite fertilizer according to claim 1 prepared using industrial slag, which is characterized in that described adhesive
For one or more of diatomite, high-level laterite, white clay, ceramic clay, pottery mud.
4. the slow-release composite fertilizer according to claim 1 prepared using industrial slag, which is characterized in that pass through following step
It is rapid to prepare：
(1) industrial slag activates：Industrial slag is crushed to 60-80 mesh, industrial slag and phosphoric acid solution is weighed in mass ratio, adds
Enter and 1-2h is mixed into reaction kettle, add hydrochloric acid solution and react 20-30 minutes, adds potassium phosphate solution to adjust pH value
To 4-6, material takes out drying, obtains activated industrial slag；
(2) prepared by slow-release composite fertilizer：Raw material is weighed in parts by weight, by urea, ammonium acid fluoride, ammonium hydrogen carbonate, potassium chloride, corruption
Grow matter, ammonium hydrogen phosphate is put into batch mixer and carries out just mixed, batch mixer rotating speed is improved into 20-50rpm later, and activated industrial is added
Slag is mixed again, adds adhesive and water mix eventually, be added in comminutor and be granulated after mixing completely, put after the completion of granulation
Enter drying in drier, obtains slow-release composite fertilizer.
5. the slow-release composite fertilizer according to claim 4 prepared using industrial slag, which is characterized in that in step (1)
Speed of agitator is 200-300rpm.
6. the slow-release composite fertilizer according to claim 4 prepared using industrial slag, which is characterized in that in step (1)
Phosphoric acid solution a concentration of 5-10mol/L, concentration of hydrochloric acid solution 1-2mol/L.
7. the slow-release composite fertilizer according to claim 4 prepared using industrial slag, which is characterized in that in step (2)
Just mixed rotating speed is 200-400rpm, mixing time 2-5min.
8. the slow-release composite fertilizer according to claim 4 prepared using industrial slag, which is characterized in that in step (2)
It is done time again as 3-5min, is done time eventually as 2-3min.
9. the slow-release composite fertilizer according to claim 4 prepared using industrial slag, which is characterized in that step (2) is just
It mixes, mix again, the whole mixed temperature that controls in the process is between 1-10 DEG C.
10. the slow-release composite fertilizer according to claim 4 prepared using industrial slag, which is characterized in that in step (2)
Drying temperature is 20-40 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810339828.8A CN108569938A (en) | 2018-04-16 | 2018-04-16 | A kind of slow-release composite fertilizer prepared using industrial slag |
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| CN201810339828.8A CN108569938A (en) | 2018-04-16 | 2018-04-16 | A kind of slow-release composite fertilizer prepared using industrial slag |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007073587A1 (en) * | 2005-12-29 | 2007-07-05 | Petróleo Brasileiro S.A. - Petrobras | Process for obtaining a fertilizer with sustained release of phosphorus |
| CN101012139A (en) * | 2006-11-14 | 2007-08-08 | 夏宁 | Humic acid iron multicomponent fertilizer and manufacturing method thereof |
| CN103739406A (en) * | 2013-12-16 | 2014-04-23 | 锦州硕丰农药集团有限公司 | Humic acid chelated boron, magnesium, zinc and iron fertilizer and preparation method thereof |
| CN104261948A (en) * | 2014-10-11 | 2015-01-07 | 延边遵杰资源开发利用有限公司 | Organic and inorganic compound fertilizer prepared from oil-shale waste residues and preparation method thereof |
-
2018
- 2018-04-16 CN CN201810339828.8A patent/CN108569938A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007073587A1 (en) * | 2005-12-29 | 2007-07-05 | Petróleo Brasileiro S.A. - Petrobras | Process for obtaining a fertilizer with sustained release of phosphorus |
| CN101012139A (en) * | 2006-11-14 | 2007-08-08 | 夏宁 | Humic acid iron multicomponent fertilizer and manufacturing method thereof |
| CN103739406A (en) * | 2013-12-16 | 2014-04-23 | 锦州硕丰农药集团有限公司 | Humic acid chelated boron, magnesium, zinc and iron fertilizer and preparation method thereof |
| CN104261948A (en) * | 2014-10-11 | 2015-01-07 | 延边遵杰资源开发利用有限公司 | Organic and inorganic compound fertilizer prepared from oil-shale waste residues and preparation method thereof |
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Application publication date: 20180925 |