CN109438136A - A kind of calcium ammonium nitrate compound fertilizer and preparation method thereof containing nitro humus acid - Google Patents
A kind of calcium ammonium nitrate compound fertilizer and preparation method thereof containing nitro humus acid Download PDFInfo
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- CN109438136A CN109438136A CN201811653313.1A CN201811653313A CN109438136A CN 109438136 A CN109438136 A CN 109438136A CN 201811653313 A CN201811653313 A CN 201811653313A CN 109438136 A CN109438136 A CN 109438136A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C1/00—Ammonium nitrate fertilisers
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- 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)
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- Organic Chemistry (AREA)
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- Pest Control & Pesticides (AREA)
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Abstract
The invention discloses a kind of calcium ammonium nitrate compound fertilizer and preparation method thereof containing nitro humus acid, compound fertilizer includes following raw material: 80~110 parts of nitric acid, 60~100 parts of green stone, 3~6 parts of lignite, ammonium nitrate and trace mineral supplement, formula is simple, element species are rich and varied, nutrient is complete, and element utilization rate is high.Preparation method technological operation of the present invention is simple, easy, it obtains calcium ammonium nitrate product and contains nitro humus acid, can be improved the utilization rate of plant centering microelement, improve soil, the diversity and functionality for increasing calcium ammonium nitrate product, improve the quality of calcium ammonium nitrate.
Description
Technical field
The present invention relates to calcium ammonium nitrate compound fertilizer fields, more particularly to the calcium ammonium nitrate compound fertilizer containing nitro humus acid.
Background technique
China is a populous country, and grain-production occupies important position in the development of agricultural production.It is logical
Often increasing the approach of grain yield is to bring more land under cultivation or increase the yield per unit area.According to China's actual conditions, continues to expand and plough
The potentiality of ground area are little, although still there are many unreclaimed soils for China, in the presence of investing, more, difficulty is big is asked mostly
Topic.This just determines that Grain in China volume increase must walk the approach increase the yield per unit area.
Fertilising can not only increase soil fertility, and be also the important measures for improving crop yield per unit area.Chemical fertilizer is
Agricultural production is most basic and is most important substance investment.It is counted according to FAO (Food and Agriculture Organization of the United Nation) (FAO), chemical fertilizer is to crops
Account for about 40%~60% in total share of volume increase.China can support the population in the world Liao Zhan 22% to account for the arable land in the world 7%, can
To say that chemical fertilizer plays very important effect.
Calcium ammonium nitrate is also known as agriculture calcium ammonium nitrate in fertilizer Register, the Ministry of Agriculture, and molecular formula is 5Ca (NO3)2·
NH4NO3·10H2O.Total nitrogen content is 15.5%, wherein about 14% is nitrate nitrogen, remaining is ammonium nitrogen.Existing calcium ammonium nitrate
For the production of disc granulation technique, it is a kind of new and effective compound fertilizer containing 18% quick-acting water-soluble calcium that 100%, which is dissolved in water,
Fertilizer efficiency is fast, there is the characteristics of quickly mending nitrogen, and with addition of calcium, and nutrient is more comprehensive than ammonium nitrate, and plant can directly absorb, but raw
Excessive nitric acid is usually excessive more during production, needs to carry out nitric acid additional post-processing, increases production cost.Together
When, the limitation that calcium ammonium nitrate still has chemical fertilizer common, organic substance needed for lacking crop, and for a long time using can make
The problems such as obtaining soil meta-alkalescence.Therefore, need to add organic fertilizer or pH adjusting agent use toward contact in use could protect
Plant growth is demonstrate,proved, this undoubtedly brings many troubles to user, complex steps, inconvenient to use.
Summary of the invention
The calcium ammonium nitrate compound fertilizer and its system that the invention mainly solves the technical problem of providing a kind of containing nitro humus acid
Preparation Method can make full use of excessive nitric acid material in production process, and the efficiently obtained calcium ammonium nitrate containing nitro humus acid is multiple
Hefei simplifies technique, save the cost.
In order to solve the above technical problems, one technical scheme adopted by the invention is that:
A kind of calcium ammonium nitrate compound fertilizer containing nitro humus acid is provided, raw material includes following parts by weight substance: nitric acid 80~
110 parts, 60~100 parts of green stone, 3~6 parts of lignite and ammonium nitrate.
Further, the nitric acid is the aqueous solution of nitric acid of mass fraction 50%, and calcium carbonate content is greater than in the green stone
92%, content of humic acid is greater than 60% in the lignite, and the dosage of the ammonium nitrate is that green stone and nitric acid reaction generate later
0.2~0.25 times of the amount of the substance of calcium nitrate.
Further, the mass ratio of the nitric acid and green stone is 1: (1~1.3), the dosage of the lignite are green stone quality
0.5%~10%.
The mass ratio of nitric acid and green stone described further is 1: 1.2, the dosage of the lignite be green stone quality 3%~
5%.
Further, the raw material further includes trace mineral supplement.
Trace mineral supplement is a kind of additive, constitutes the raw material of trace mineral supplement, is containing microelement
Compound.
The microelement includes but is limited to magnesium, zinc, iron, boron, arsenic, manganese, copper, cobalt, molybdenum etc..
Further, the trace mineral supplement is selected from magnesium ion additive, zinc ion additive, copper ion addition
One or more of agent, iron ion additive.
The magnesium ion additive is the salt containing magnesium elements, including but not limited to magnesium chloride, magnesium sulfate, magnesium carbonate, first
Sour magnesium, magnesium stearate, magnesium trisilicate.
The zinc ion additive is the salt containing Zn-ef ficiency, including but not limited to zinc sulfate, white vitriol, a water sulphur
Sour zinc, zinc nitrate, zinc chloride, zinc sulfate, zinc acetate.
The copper ion additive is the salt containing copper, including but not limited to copper sulphate, cupric sulfate pentahydrate.
The iron ion additive be the salt containing ferro element, including but not limited to ferric sulfate, ferrous sulfate, ferric nitrate,
Ferrous nitrate, Complexing Iron.
Further, after trace mineral supplement is added, the micronutrient levels in chemical fertilizer is in following range: magnesium ion
Mass fraction is 0.02%~0.3%, and the mass fraction of zinc ion is 0.01%~0.22%, and the mass fraction of copper ion is
0.01~0.08%, the mass fraction of iron ion is 0.02%~0.08%.
Further, the mass fraction of the magnesium ion is 0.1%~0.2%, and the mass fraction of the zinc ion is
0.05%~0.1%, the mass fraction of the copper ion is 0.03%~0.05%, and the mass fraction of the iron ion is
0.03%~0.05%.
The present invention also provides a kind of method for preparing the above-mentioned calcium ammonium nitrate compound fertilizer containing nitro humus acid, including it is following
Step:
(1) according to formula ratio, nitric acid and green stone is sufficiently mixed gained reaction mixture again with lignite hybrid reaction, obtained instead
Answer liquid；
(2) pH of reaction solution is adjusted to 5~6 with quick lime, then filters pressing obtains pressing filtering liquid, and pressing filtering liquid uses ammonium nitrate molten again
Liquid is carried out in proportion with ammonium, then concentrated, be granulated to obtain the final product.
Reaction principle when ammonium nitrate and pressing filtering liquid are carried out with ammonium are as follows:
5Ca(NO3)2+NH4NO3=NH4NO3.5Ca(NO3)2。
Further, in step (1), when lignite participates in reaction: reaction temperature is 70~95 DEG C, reaction time 15min
~120min.
It further, further include addition microelement before granulation after pressing filtering liquid carries out with ammonium, concentration in step (2)
Additive step.
The beneficial effects of the present invention are:
(1) the calcium ammonium nitrate compound fertilizer of the invention containing nitro humus acid is full of nutrition, and inorganic matter and organic matter have both, element
Type is rich and varied, and nutrient is complete, while cooperating between component, synergistic, and nitro humus acid significantly improves fertilizer
The utilization rate of middle different nutriments, improves fertilizer efficiency, can effectively improve the yield of crop, improves soil.
(2) preparation method of the calcium ammonium nitrate compound fertilizer of the invention containing nitro humus acid, simple process, raw material availability
Height consumes the complete nitric acid of unreacted by lignite, is taking full advantage of raw material, is greatly reducing excess nitric acid post-processing step
On the basis of, organic matter (nitro humus acid) also is increased for fertilizer, increases the functionality and diversity of calcium ammonium nitrate product.
(3) preparation method of the calcium ammonium nitrate compound fertilizer of the invention containing nitro humus acid, without changing prior art and setting
It is standby, calcium ammonium nitrate product quality is nor affected on, the product that fertilizer efficiency is higher, nutrition is richer can be produced, original is also improved when logical
Material utilization rate effectively reduces cost, achieves many things at one stroke, has significant progress and substantive distinguishing features outstanding.
Specific embodiment
Technical solution of the present invention is clearly and completely described below, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
In embodiment:
Calcium carbonate content is greater than 92% in green stone；
Content of humic acid is greater than 60% in lignite；
Trace mineral supplement is the compound containing microelement, microelement include but be limited to magnesium, zinc, iron, boron,
Arsenic, manganese, copper, cobalt, molybdenum etc..
The trace mineral supplement being added in embodiment has magnesium ion additive, zinc ion additive, copper ion addition
Agent, iron ion additive.
Magnesium ion additive be the salt containing magnesium elements, including but not limited to magnesium chloride, magnesium sulfate, magnesium carbonate, magnesium formate,
Magnesium stearate, magnesium trisilicate.
Zinc ion additive is the salt containing Zn-ef ficiency, including but not limited to zinc sulfate, white vitriol, sulfuric acid monohydrate
Zinc, zinc nitrate, zinc chloride, zinc sulfate, zinc acetate.
Copper ion additive is the salt containing copper, including but not limited to copper sulphate, cupric sulfate pentahydrate.
Iron ion additive is the salt containing ferro element, including but not limited to ferric sulfate, ferrous sulfate, ferric nitrate, nitric acid
Ferrous, Complexing Iron.
Embodiment 1
(1) 1.1 ton of 50% nitric acid is passed into the reaction kettle equipped with 1 ton of green stone and is reacted with green stone, after having reacted
30Kg lignite the reaction was continued at 75 DEG C 30min is added, obtains reaction solution；
(2) pH value is adjusted to 5~6 progress filters pressings, pressing filtering liquid quality using quick lime to reaction solution in step 1
The ammonium nitrate solution that concentration is 50~60% carry out in proportion with ammonium (amount of the substance for the ammonium nitrate that ammonium nitrate solution contains be walk
Suddenly 0.2 times of the amount of the calcium nitrate generated in (1)), the trace mineral supplements such as magnesium zinc-copper iron are added after being then concentrated to be made
Grain obtains calcium ammonium nitrate containing nitro humus acid.
Add the dosage of trace element magnesium zinc-copper iron are as follows: magnesium ion accounts for the 0.3% of compound fertilizer's gross mass, and zinc ion accounts for compound
The 0.22% of fertile gross mass, copper ion account for the 0.01% of compound fertilizer's gross mass, and iron ion accounts for the 0.02% of compound fertilizer's gross mass.
Embodiment 2
(1) 1 ton of 50% nitric acid is passed into the reaction kettle equipped with 1 ton of green stone and is reacted with green stone, after having reacted
40Kg lignite the reaction was continued at 80 DEG C 40min is added in reaction solution, obtains reaction solution；
(2) pH value is adjusted to 5-6 progress filters pressing, pressing filtering liquid mass concentration using quick lime to reaction solution in step 1
Carry out that (amount of the substance for the ammonium nitrate that ammonium nitrate solution contains is step with ammonium in proportion for 50~60% ammonium nitrate solution
(1) 0.25 times of the amount of the calcium nitrate generated in), the microelements such as addition magnesium zinc-copper iron, which are granulated, after being then concentrated is contained
Nitro humus acid calcium ammonium nitrate.
Add the dosage of trace element magnesium zinc-copper iron are as follows: magnesium ion accounts for the 0.1% of compound fertilizer's gross mass, and zinc ion accounts for compound
The 0.05% of fertile gross mass, copper ion account for the 0.03% of compound fertilizer's gross mass, and iron ion accounts for the 0.03% of compound fertilizer's gross mass.
Embodiment 3
(1) 0.8 ton of 50% nitric acid is passed into the reaction kettle equipped with 0.6 ton of green stone and is reacted with green stone, reacted
30Kg lignite is added the reaction was continued at 90 DEG C 50min in rear reaction solution, obtains reaction solution；
(2) pH value is adjusted using quick lime to reaction solution in step 1 and carries out filters pressing to 5-6, pressing filtering liquid quality is dense
Degree be 50~60% ammonium nitrate solution carry out in proportion match ammonium (amount of the substance for the ammonium nitrate that ammonium nitrate solution contains is step
(1) 0.22 times of the amount of the calcium nitrate generated in), the microelements such as addition magnesium zinc-copper iron, which are granulated, after being then concentrated is contained
Nitro humus acid calcium ammonium nitrate.
Add the dosage of trace element magnesium zinc-copper iron are as follows: magnesium ion accounts for the 0.1% of compound fertilizer's gross mass, and zinc ion accounts for compound
The 0.08% of fertile gross mass, copper ion account for the 0.04% of compound fertilizer's gross mass, and iron ion accounts for the 0.04% of compound fertilizer's gross mass.
Embodiment 4
(1) 1.5 ton of 50% nitric acid is passed into the reaction kettle equipped with 1.2 tons of green stones and is reacted with green stone, reacted
60Kg lignite is added the reaction was continued at 85 DEG C 25min in rear reaction solution, obtains reaction solution；
(2) pH value is adjusted to 5~6 progress filters pressings using quick lime to reaction solution in step 1, pressing filtering liquid quality is dense
Degree be 50~60% ammonium nitrate solution carry out in proportion match ammonium (amount of the substance for the ammonium nitrate that ammonium nitrate solution contains is step
(1) 0.23 times of the amount of the calcium nitrate generated in), the microelements such as addition magnesium zinc-copper iron, which are granulated, after being then concentrated is contained
Nitro humus acid calcium ammonium nitrate.
Add the dosage of trace element magnesium zinc-copper iron are as follows: magnesium ion accounts for the 0.2% of compound fertilizer's gross mass, and zinc ion accounts for compound
The 0.1% of fertile gross mass, copper ion account for the 0.05% of compound fertilizer's gross mass, and iron ion accounts for the 0.05% of compound fertilizer's gross mass.
Embodiment 5
(1) 0.9 ton of 50% nitric acid is passed into the reaction kettle equipped with 0.7 ton of green stone and is reacted with green stone, reacted
35Kg lignite is added the reaction was continued at 80 DEG C 60min in rear reaction solution, obtains reaction solution；
(2) pH value is adjusted using quick lime to reaction solution in step 1 and carries out filters pressing to 5-6, pressing filtering liquid quality is dense
Degree be 50~60% ammonium nitrate solution carry out in proportion match ammonium (amount of the substance for the ammonium nitrate that ammonium nitrate solution contains is step
(1) 0.24 times of the amount of the calcium nitrate generated in), the microelements such as addition magnesium zinc-copper iron, which are granulated, after being then concentrated is contained
Nitro humus acid calcium ammonium nitrate.
Add the dosage of trace element magnesium zinc-copper iron are as follows: magnesium ion accounts for the 0.02% of compound fertilizer's gross mass, and zinc ion accounts for multiple
The 0.01% of Hefei gross mass, copper ion account for the 0.08% of compound fertilizer's gross mass, and iron ion accounts for the 0.08% of compound fertilizer's gross mass.
Embodiment 6
(1) 1.5 ton of 50% nitric acid is passed into the reaction kettle equipped with 1.2 tons of green stones and is reacted with green stone, reacted
6Kg lignite is added the reaction was continued at 85 DEG C 25min in rear reaction solution, obtains reaction solution；
(2) pH value is adjusted to 5~6 progress filters pressings using quick lime to reaction solution in step 1, pressing filtering liquid quality is dense
Degree be 50~60% ammonium nitrate solution carry out in proportion match ammonium (amount of the substance for the ammonium nitrate that ammonium nitrate solution contains is step
(1) 0.23 times of the amount of the calcium nitrate generated in), the microelements such as addition magnesium zinc-copper iron, which are granulated, after being then concentrated is contained
Nitro humus acid calcium ammonium nitrate.
Add the dosage of trace element magnesium zinc-copper iron are as follows: magnesium ion accounts for the 0.2% of compound fertilizer's gross mass, and zinc ion accounts for compound
The 0.1% of fertile gross mass, copper ion account for the 0.05% of compound fertilizer's gross mass, and iron ion accounts for the 0.05% of compound fertilizer's gross mass.
Embodiment 7
(1) 1.5 ton of 50% nitric acid is passed into the reaction kettle equipped with 1.2 tons of green stones and is reacted with green stone, reacted
120Kg lignite is added the reaction was continued at 85 DEG C 25min in rear reaction solution, obtains reaction solution；
(2) pH value is adjusted to 5~6 progress filters pressings using quick lime to reaction solution in step 1, pressing filtering liquid quality is dense
Degree be 50~60% ammonium nitrate solution carry out in proportion match ammonium (amount of the substance for the ammonium nitrate that ammonium nitrate solution contains is step
(1) 0.23 times of the amount of the calcium nitrate generated in), the microelements such as addition magnesium zinc-copper iron, which are granulated, after being then concentrated is contained
Nitro humus acid calcium ammonium nitrate.
Add the dosage of trace element magnesium zinc-copper iron are as follows: magnesium ion accounts for the 0.2% of compound fertilizer's gross mass, and zinc ion accounts for compound
The 0.1% of fertile gross mass, copper ion account for the 0.05% of compound fertilizer's gross mass, and iron ion accounts for the 0.05% of compound fertilizer's gross mass.
GBT 11957-2001 analysis content of humic acid and NY 2269- are respectively adopted to the product that above embodiments obtain
2012 analysis other indexs of calcium ammonium nitrate the results are shown in Table 1:
Table 1
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Total nitrogen content, % | 15.11 | 15.04 | 15.21 | 15.13 | 15.03 |
| Nitrate nitrogen content, % | 14.01 | 14.06 | 14.12 | 14.15 | 14.08 |
| Total calcium content, % | 18.12 | 18.04 | 18.11 | 18.03 | 18.02 |
| Total content of magnesium, % | 0.20 | 0.15 | 0.18 | 0.13 | 0.17 |
| Total Zn content, % | 0.08 | 0.11 | 0.07 | 0.10 | 0.007 |
| Total iron content, % | 0.02 | 0.03 | 0.03 | 0.04 | 0.03 |
| Total copper content, % | 0.03 | 0.02 | 0.03 | 0.04 | 0.02 |
| Nitro humus acid content, % | 0.58 | 0.71 | 0.6 | 0.75 | 0.8 |
| Water-insoluble, % | It is not detected | It is not detected | It is not detected | It is not detected | Copper |
By analysis detection as can be seen that preparation method of the present invention does not generate shadow to calcium ammonium nitrate product itself quality substantially
It rings, and more can significantly detect that nitro humus acid is contained in compound fertilizer of the present invention.
Product made from embodiment 4 is administered to big Tanaka by trickle irrigation, and it is general not apply with blank calcium ammonium nitrate, application
Logical calcium ammonium nitrate product and the calcium ammonium nitrate product for being free of nitro humus acid containing only microelement compare water in observation soil
The variation of dissolubility microelement, as a result such as the following table 2~5:
2 blank of table does not apply calcium ammonium nitrate
| Water soluble trace elements | Content (ppm) |
| Magnesium ion | 7 |
| Calcium ion | 17 |
| Manganese ion | 2.8 |
| Copper ion | 0.04 |
| Zinc ion | 0.5 |
Table 3 applies commercially available common ammonium nitrate
The application of table 4 is free of the calcium ammonium nitrate product of nitro humus acid containing microelement
Table 5 applies the nitro humus acid calcium ammonium nitrate product of the invention containing microelement
According to result above as can be seen that nitro humus acid calcium ammonium nitrate of the present invention containing microelement can not only be plant
Object provides microelement, is acted synergistically by each component, effectively can also sufficiently improve each element utilization rate, fertilizer efficiency is more longlasting.
Product of the present invention and common ammonium nitrate calcium product are subjected to field experiment on potato, test process and result are shown in
Table 6:
Table 6
| Processing | Dose (Kg/ mus) | Single plant yield (Kg) | Per mu yield (Kg) | Amplification |
| It does not apply fertilizer | 30 | 0.7 | 70.3 | |
| Common ammonium nitrate calcium | 30 | 0.8 | 80.2 | 14.08% |
| 1 product of embodiment | 30 | 1.05 | 83.6 | 18.9% |
| 3 product of embodiment | 30 | 1.09 | 84.1 | 19.6% |
It can be seen that the calcium ammonium nitrate complex fertilizer product of the invention containing nitro humus acid than general from above-mentioned field experiment result
Logical calcium ammonium nitrate product yield amplification is 4~6 percentage points high, has preferable economic benefit.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of calcium ammonium nitrate compound fertilizer containing nitro humus acid, which is characterized in that raw material includes following parts by weight substance: nitric acid
80~110 parts, 60~100 parts of green stone, 3~6 parts of lignite and ammonium nitrate.
2. compound fertilizer according to claim 1, which is characterized in that the nitric acid is that the nitric acid of mass fraction 50% is water-soluble
Liquid, calcium carbonate content is greater than 92% in the green stone, and content of humic acid is greater than 60% in the lignite, the dosage of the ammonium nitrate
It is 0.2~0.25 times of green stone and the nitric acid reaction later amount of the substance of the calcium nitrate of generation.
3. compound fertilizer according to claim 2, which is characterized in that the mass ratio of the nitric acid and green stone is 1: (1~
It 1.3) is further, 1: 1.2；The dosage of the lignite is the 0.5%~10% of green stone quality, is further 3%-5%.
4. described in any item compound fertilizers according to claim 1~3, which is characterized in that the raw material further includes that microelement adds
Add agent.
5. compound fertilizer according to claim 4, which is characterized in that the trace mineral supplement is added selected from magnesium ion
One or more of agent, zinc ion additive, copper ion additive, iron ion additive.
6. compound fertilizer according to claim 5, which is characterized in that micro in chemical fertilizer after trace mineral supplement is added
Constituent content is in following range: the mass fraction of magnesium ion is 0.02%~0.3%, the mass fraction of zinc ion is 0.01%~
0.22%, the mass fraction of copper ion is 0.01~0.08%, and the mass fraction of iron ion is 0.02%~0.08%.
7. calcium ammonium nitrate chemical fertilizer according to claim 6, which is characterized in that the mass fraction of the magnesium ion is 0.1%
~0.2%, the mass fraction of the zinc ion is 0.05%~0.1%, the mass fraction of the copper ion is 0.03%~
0.05%, the mass fraction of the iron ion is 0.03%~0.05%.
8. a kind of method for preparing the calcium ammonium nitrate compound fertilizer described in claim 1~7 any one containing nitro humus acid, special
Sign is, including the following steps:
(1) according to formula ratio, nitric acid is sufficiently mixed with green stone and reacts gained reaction mixture again with lignite hybrid reaction, is obtained instead
Answer liquid；
(2) pH of reaction solution is adjusted to 5~6 with quick lime, then filters pressing obtains pressing filtering liquid, and pressing filtering liquid is pressed with ammonium nitrate solution again
Ratio is carried out with ammonium, then concentrated, be granulated to obtain the final product.
9. preparation method according to claim 8, which is characterized in that in step (1), when lignite participates in reaction: reaction temperature
Degree is 70~95 DEG C, and the reaction time is 15min~120min.
10. preparation method according to claim 8 or claim 9, which is characterized in that in step (2), pressing filtering liquid carry out with ammonium,
It further include addition trace mineral supplement step before granulation after concentration.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113861987A (en) * | 2021-10-27 | 2021-12-31 | 成都走之科技有限公司 | Environment-friendly preparation method of mineral source nitrohumic acid |
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| CN108424289A (en) * | 2018-06-01 | 2018-08-21 | 天脊煤化工集团股份有限公司 | A kind of method and device producing organic calcium kalium liquid fertilizer material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103539508A (en) * | 2013-11-08 | 2014-01-29 | 深圳市金佰诺投资担保有限公司 | Macroelement water-soluble fertilizer and preparation method thereof |
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Application publication date: 20190308 |