CN106915976A - The method that the nitric acid ca and mg fertilizer of zinc-rich is prepared using nitrophosphate fertilizer accessory substance calcium nitrate - Google Patents
The method that the nitric acid ca and mg fertilizer of zinc-rich is prepared using nitrophosphate fertilizer accessory substance calcium nitrate Download PDFInfo
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- CN106915976A CN106915976A CN201510988949.1A CN201510988949A CN106915976A CN 106915976 A CN106915976 A CN 106915976A CN 201510988949 A CN201510988949 A CN 201510988949A CN 106915976 A CN106915976 A CN 106915976A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C5/00—Fertilisers containing other nitrates
- C05C5/04—Fertilisers containing other nitrates containing calcium nitrate
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Abstract
The present invention is applied to fertilizer preparing technical field, there is provided a kind of method that utilization nitrophosphate fertilizer accessory substance calcium nitrate prepares the nitric acid ca and mg fertilizer of zinc-rich, comprises the following steps：Offer prepares the thick calcium nitrate of accessory substance of nitrophosphate fertilizer；Neutralization reaction is carried out to magnesia or magnesium hydroxide and zinc oxide is added in the calcium nitrate, nitric acid calcium and magnesium zinc mixed solution is mixed to get；The nitric acid calcium and magnesium zinc mixed solution is filtered successively, is concentrated and granulation treatment, obtained rich in the water-soluble calcium nitrate magnesium granules fertilizer for having trace element zinc.The present invention directly uses the thick calcium nitrate of nitrophosphate fertilizer accessory substance as calcium source, is not required to introduce calcium source by outside again, effectively reduces nitrophosphate fertilizer cost of material；Zinc oxide being introduced simultaneously and participating in neutralization reaction, expanded the use of nitric acid ca and mg fertilizer, the micronutrient levels supplemented with crop can increase fruit appearance color and luster and finish, improve fruit quality and yield, lift fruit grade.
Description
Technical field
The invention belongs to fertilizer preparing technical field, more particularly to prepared using nitrophosphate fertilizer accessory substance calcium nitrate
A kind of method rich in the nitric acid ca and mg fertilizer for having zinc.
Background technology
Nitric acid ca and mg fertilizer is a kind of important water soluble fertilizer, and it mainly includes two kinds of water of calcium nitrate and magnesium nitrate
Soluble.Wherein, the nitrate nitrogen for containing in nitric acid ca and mg fertilizer can directly be absorbed by plants, quickly for plant is mended
Fill nutrition；Water-soluble calcium can promote the absorption of Nitrogen In Soils, phosphorus, potassium, increase the resistance of crop；Water
Dissolubility magnesium can improve the content of chlorophyll in crop body, promote photosynthesis.
The existing method for preparing nitric acid ca and mg fertilizer, typically carries out mixing post processing by calcium and magnesium nitrate raw material,
Preparation method such as the nitric acid calcium and magnesium double salt type composite fertilizer of patent of invention CN103833444A is to be by mass ratio
(3.5~0.1)：1 magnesium nitrate and calcium nitrate is configured to mixed aqueous solution；Then mixed aqueous solution is concentrated
It is the concentrate that total mass ratio is 50~90%；Concentrate is delivered in 30~110M head tanks at 85~130 DEG C
Under the conditions of the continuous shower nozzle from 0.5~3.0MM spray, after being cooled down through air, calcium nitrate magnesium compound fertilizer is obtained and produces
Product.The product feature is the total mass ratio 50~90% of magnesium nitrate in composite fertilizer, calcium nitrate, the crystallization water
Mass ratio is 10~50%, the mass ratio 3.5~0.1 of magnesium nitrate and calcium nitrate：1.And patent of invention
CN104211482A provide multifunctional high-calcium fertilizer in, be by 50~70% parts of calcium ammonium nitrate, magnesium nitrate 30~
60% and boric acid 1~5% it is well mixed, after heating, drying, grind to form the powder of 50~200 mesh so as to height is obtained
Calcareous fertilisers.Above method production nitric acid ca and mg fertilizer will granulate system using direct after magnesium nitrate and calcium nitrate mixture
Nitric acid ca and mg fertilizer is obtained, therefore energy consumption and integrated cost are high, and automaticity is low.
In patent of invention CN 104326771A, using in phosphorus mine tailing addition lime and calcium hydroxide and in filtrate
Free acid, PH is adjusted to 6.5~7, dried through filtering, vacuum concentration etc. and nitric acid calcium and magnesium to be obtained after operation
Fertilizer product.However, there is problems with the method production nitric acid ca and mg fertilizer：Firstly, since in phosphorus mine tailing
Residue is more, causes machine utilization big, and yield is relatively low；Secondly, the method fails to make the calcium salt in mine tailing fully to live
Change, so that needing to be reintroduced back to outside calcium salt, calcium utilization is not enough；Again, nitric acid need to be consumed and mine tailing is anti-
Should, acid consumption is big, relatively costly.
In addition, all kinds of nitric acid ca and mg fertilizer products obtained above, trace element zinc is not contained, but for
, it is necessary to improve fruit-setting rate for some industrial crops, corresponding fertilizer is so applied in addition and is supplemented, nothing
Doubt the production cost that increased crop.
The content of the invention
Prepare to be rich in using nitrophosphate fertilizer accessory substance calcium nitrate it is an object of the invention to provide one kind and have micro unit
The method of the nitric acid ca and mg fertilizer of plain zinc, can not only reduce cost of material, and can improve nitric acid ca and mg fertilizer
Quality, increases the fruit-setting rate of crop.
The method that the utilization nitrophosphate fertilizer accessory substance calcium nitrate that the present invention is provided prepares the nitric acid ca and mg fertilizer of zinc-rich,
Comprise the following steps：
Offer prepares the thick calcium nitrate of accessory substance of nitrophosphate fertilizer；
Neutralization reaction is carried out to magnesia or magnesium hydroxide and zinc oxide is added in the calcium nitrate, is mixed
To nitric acid calcium and magnesium zinc mixed solution；
The nitric acid calcium and magnesium zinc mixed solution is filtered successively, is concentrated and granulation treatment, obtaining being rich in is had
The water-soluble calcium nitrate magnesium granules fertilizer of zinc.
Preferably, the gross weight with the calcium nitrate magnesium granules fertilizer of the zinc-rich is counted as 100%, the weight of water soluble magnesium
Percentage is 1.0~6.5%；The percentage by weight of water-soluble calcium is 10~16%；The weight percent of water-soluble zinc
Than being 0.002~0.02%.
Preferably, the PH of the nitric acid calcium and magnesium zinc mixed solution is 6.0~7.0.
Further, to addition magnesia or magnesium hydroxide and zinc oxide in the calcium nitrate neutralize instead
After the step of answering, also including being adjusted place to the pH value of the nitric acid calcium and magnesium zinc mixed solution using nitric acid
Reason.
Further, treatment is being adjusted to the pH value of the nitric acid calcium and magnesium zinc mixed solution using nitric acid
Before and afterwards, the nitric acid calcium and magnesium zinc mixed solution is carried out into coarse filtration and refined filtration separating treatment respectively, is filtered off
Insoluble matter.
Preferably, the evaporating temperature of the concentration is 150~155 DEG C.
Preferably, the temperature of the granulation treatment is 50~90 DEG C, and pressure is 100~﹣ of ﹣ 500Pa.
Further, after the granulation process step, also including being carried out to the calcium nitrate magnesium granules fertilizer
Sieve treatment, obtains the calcium nitrate magnesium granules fertilizer that particle diameter is 1~4mm.
Further, after the granulation process step, also including cooling treatment, the temperature of the cooling treatment
It is 30~50 DEG C to spend, and pressure is ﹣ 100~﹣ 500Pa, humidity≤60%.
The present invention has following technique effect；
(1) present invention directly uses the thick calcium nitrate of nitrophosphate fertilizer accessory substance as calcium source, is not required to again by outside
Calcium source is introduced, cost of material is effectively reduced；
(2) using the free acid in magnesia or magnesium hydroxide and in the thick calcium nitrate, it is to avoid waste residue
Produce and discharge, reduce the load of production equipment, improve yield, meet environmental protection theory；
(3) the nitric acid ca and mg fertilizer of zinc-rich prepared by the present invention is water-soluble products, is conducive to expanding nitric acid calcium and magnesium
The use of fertilizer, supplements the micronutrient levels of crop, increases fruit appearance color and luster and finish, improves fruit
Quality and yield, lifts fruit grade；
(4) present invention need not consume nitric acid material, may be such that cost of material is further reduced, and technique stream
Journey is simple and easy to control, it is easy to accomplish industrialization.
Brief description of the drawings
Fig. 1 is the method that the utilization thick calcium nitrate of nitrophosphate fertilizer accessory substance that the present invention is provided prepares nitric acid ca and mg fertilizer
Schematic flow sheet；
Fig. 2 is that the thick calcium nitrate of utilization nitrophosphate fertilizer accessory substance provided in an embodiment of the present invention prepares nitric acid ca and mg fertilizer
Method flow schematic diagram.
Specific embodiment
In order that the technical problem to be solved in the present invention, technical scheme and beneficial effect become more apparent, with
Lower combination drawings and Examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
As shown in figure 1, prepared using the thick calcium nitrate of nitrophosphate fertilizer accessory substance being rich in zinc the invention provides one kind
Nitric acid ca and mg fertilizer method, comprise the following steps：
S01. offer prepares the thick calcium nitrate of accessory substance of nitrophosphate fertilizer；
S02. neutralization reaction is carried out to addition magnesia or magnesium hydroxide and zinc oxide in the calcium nitrate, is mixed
Conjunction obtains nitric acid calcium and magnesium zinc mixed solution；
S03. the nitric acid calcium and magnesium zinc mixed solution filtered successively, concentrated and granulation treatment, obtained richness
Water-soluble calcium nitrate magnesium granules fertilizer containing zinc.
The present invention prepare rich in the nitric acid ca and mg fertilizer for having zinc, supplemented with trace element zinc, zinc is plant growth
Element, participates in the metabolism of auxin, and zinc can promote heteroauxin to synthesize and serine synthesis tryptophan, and color
Propylhomoserin is the predecessor of auxin, and during zinc-deficiency, heteroauxin synthesis falls sharply in crops body, crop growth hair
Stagnation is educated, blade diminishes.In trace element, zinc or protein synthesize most prominent element, and zinc can promote
Enter protein metabolism, or ribose and protein part, and be also protection ribonucleoprotein structure
Integrality institute is required.Often cause to bloom less during crops zinc-deficiency, the abnormal situation of result.Supplement trace
Element zinc can promote crop growth, improve yield 10-30%, can significantly improve the quality of crop.And nitre
State nitrogen can directly be absorbed by plants, quickly be plant supplement the nutrients, water-soluble calcium can promote Nitrogen In Soils,
The absorption of phosphorus, potassium, can increase the resistance of crop；Water soluble magnesium can improve the content of chlorophyll in crop body,
Promote photosynthesis.The calcium nitrate magnesium granules fertilizer of above-mentioned zinc-rich is mainly used in corn, paddy rice, wheat, cotton
The crops such as flower, rape, fruit tree, vegetables, soybean, peanut, potato, tobacco.
In above-mentioned steps S01, during preparing nitrophosphate fertilizer, the thick calcium nitrate of substantial amounts of accessory substance can be produced.
Particularly freezing prepares the process of nitrophosphate fertilizer, often produces 100 tons of nitrophosphate fertilizers about thick calcium nitrate 60 of by-product
Ton.In the thick calcium nitrate, substantial amounts of four water-calcium nitrate crystal is mainly contained, additionally, with the thick nitric acid
The gross weight of calcium is 100% meter, also containing free nitric acid 6%, fluosilicic acid and phosphoric acid 0.6%, moisture 32%, nitric acid
Magnesium, ferric nitrate and aluminum nitrate total 0.2%, acid non-soluble substance 0.09%.If substantial amounts of thick calcium nitrate is not located
Reason, on the one hand, cause a large amount of wastes of resource, be unfavorable for the control of production cost；On the other hand, slightly
A large amount of loads hoarded, easily increase environment of calcium nitrate, do not meet environmental protection theory.The present invention is making
The thick calcium nitrate of accessory substance of standby nitrophosphate fertilizer as raw material, for the preparation of the nitric acid ca and mg fertilizer provides calcium source with
Nitrogen source so that outside calcium source and nitrogen source need not be introduced in the preparation process of the nitric acid ca and mg fertilizer, significantly
Reduce production cost.
The thick calcium nitrate of accessory substance that the present invention prepares nitrophosphate fertilizer is solution state.As it is of the invention preferably,
The temperature of the thick calcium nitrate is 60~90 DEG C, it is ensured that the thick calcium nitrate solution has preferably flowing
Property；The calcium nitrate will not cause line clogging because of the too low formation calcium nitrate crystallization of temperature simultaneously.
In above-mentioned steps S02, to addition magnesia or magnesium hydroxide and zinc oxide, one in the calcium nitrate
Aspect, using magnesia or magnesium hydroxide and zinc oxide, can neutralize the free acid (reaction in the calcium nitrate
Formula is as follows), the calcium ion in the calcium nitrate is fully activated, meanwhile, in reaching coarse adjustment mixed solution
PH value purpose；On the other hand, by adding the magnesia or magnesium hydroxide, there is provided Mg2+Ion,
For the preparation of the nitric acid ca and mg fertilizer provides magnesium source.
Above-mentioned steps reaction equation：
2HNO3+MgO→Mg(NO4)2+H2O
2HNO3+Mg(OH)2→Mg(NO4)2+2H2O
2HNO3+ZnO→Zn(NO4)2+H2O
As it is of the invention preferably, the PH of the nitric acid calcium and magnesium zinc mixed solution is 6.0~7.0.This is preferred
PH range, can cause the embodiment of the present invention obtain fertilizer be applicable not only to northern alkaline soil,
Applicable acid soil in the south, does not easily cause soil hardening；Additionally, the calcium nitrate of above-mentioned pH range
Magnesium fertilizer product can improve soil texture.
The magnesia or magnesium hydroxide and the amount of zinc oxide addition, with the thick calcium nitrate calcium ion it is dense
Water-soluble calcium in the product spent and its finally give, the content of magnesium specifically determine.Specifically, obtained with final
The gross weight of the calcium nitrate magnesium granules fertilizer for arriving is 100% meter, the weight hundred of magnesium in the calcium nitrate magnesium granules fertilizer
Content is divided to be 1.0~6.5%；The weight/mass percentage composition of calcium is 10~16%；Zn content 0.002~0.02%,
The magnesia or magnesium hydroxide, the amount of zinc oxide addition, can be calculated successively.
In present invention specific implementation, merely may be also by adding the magnesia or magnesium hydroxide and zinc oxide
The above-mentioned PH scopes of the nitric acid calcium and magnesium zinc mixed solution can not be realized.In this case, preferably,
After the step of addition magnesia or magnesium hydroxide and zinc oxide, also including using nitric acid to the calcium nitrate
The pH value of magnesium mixed solution be adjusted treatment so that the PH of the nitric acid calcium and magnesium zinc mixed solution be 6.0~
7.0。
As of the invention further, in order to avoid aforementioned processing is to each in the nitric acid calcium and magnesium zinc mixed solution
The content of component causes error or fluctuation, influences the performance of the nitric acid ca and mg fertilizer, can use and add
Magnesia or magnesium hydroxide, zinc oxide, the form of thick calcium nitrate carry out micro- to the nitric acid calcium and magnesium mixed solution
Mediate reason so that the content of each component more conforms to the use requirement of the nitric acid ca and mg fertilizer.Above-mentioned step
In rapid S03, the nitric acid calcium and magnesium zinc mixed solution is dried treatment, can after the completion of neutralization reaction,
Before treatment is adjusted to the pH value of the nitric acid calcium and magnesium zinc mixed solution using nitric acid, can first by nitric acid
Calcium and magnesium zinc mixed solution carries out coarse filtration treatment, isolates insoluble matter waste residue；After regulation pH value, by the nitric acid
Calcium and magnesium zinc mixed solution does refined filtration separating treatment again, filters off insoluble matter, particularly acid non-soluble substance.As excellent
Choosing, the dried process realizes that air pressure is set to 0.4-0.8MPa in the filter press using filter press.
After the dried process, into forced-circulation evaporator, the filtrate to obtaining carries out concentration, institute
The evaporating temperature for stating concentration is 150~155 DEG C.As specific preferred, the method for the concentration
For：
The nitric acid calcium and magnesium mixed solution is placed in evaporation feeder trough, adjustment evaporator middle pressure steam temperature is
190 DEG C -220 DEG C, pressure be 1.5MPa-2.5MPa；
The nitric acid calcium and magnesium mixed solution is further heated as thermal source using the condensate liquid of middle pressure saturated vapor, is made
Its temperature rises to 130 DEG C or so by 100 DEG C, eventually enters into evaporator；
Saturated vapor is pressed in being used in evaporator as thermal source, it is by adjusting middle pressure steam amount, nitric acid calcium and magnesium is molten
Liquid is heated to 150~155 DEG C of boiling point and is evaporated, and evaporates the gas-liquid mixture for producing and goes out evaporator into evaporation
In separator；Flash distillation is expanded in vapor seperator, and carries out gas-liquid separation, the pressure in vapor seperator
For：- 0.008~-0.012MPa.Evaporation is gathered in vapor seperator bottom evaporation liquid after separating is made from inflow
In grain feeder trough.
During present invention specific implementation, the nitric acid calcium and magnesium concentrate that will can be obtained after the concentration is granulated
Treatment.In the granulation treatment, the performance of the calcium nitrate magnesium granules fertilizer that temperature and pressure is obtained to granulation has one
It is fixing to ring.Specifically, the too low granulating effect of temperature is poor；The too high fertiliser granulates low intensity of temperature, easy efflorescence.
When pressure is excessive, the broken of the calcium nitrate magnesium granules fertilizer is easily caused；When pressure is too small, obtain
The calcium nitrate magnesium granules fertilizer degree of packing is inadequate, easy efflorescence, the easy efflorescence particularly in transportation.
As it is of the invention preferably, it is described granulation treatment temperature be 50~90 DEG C, pressure be 100~﹣ of ﹣ 500Pa.
As further preferred, in order to obtain the even-grained calcium nitrate magnesium granules fertilizer, in the granulation
After process step, also including carrying out sieving treatment to the calcium nitrate magnesium granules fertilizer, particle diameter is obtained for 1~4mm
Calcium nitrate magnesium granules fertilizer.
After the granulation process step, can also include carrying out cooling treatment, the temperature of the cooling treatment
It it is 30~50 DEG C, pressure is ﹣ 100~﹣ 500Pa, humidity≤60%.
Further, anti-compaction treatment can also be carried out to the calcium nitrate magnesium granules fertilizer that granulation is obtained.
The method that the utilization thick calcium nitrate of nitrophosphate fertilizer accessory substance that the present invention is provided prepares nitric acid ca and mg fertilizer, directly
Using the thick calcium nitrate of nitrophosphate fertilizer industrial by-products as calcium source, it is not required to introduce calcium source by outside again, reduces
Cost of material；Meanwhile, using the free acid in magnesia or magnesium hydroxide and in the thick calcium nitrate, keep away
Exempt from the generation and discharge of waste residue, reduced the load of production equipment, improve yield, meet environmental protection
Theory；Additionally, the method that the present invention prepares nitric acid ca and mg fertilizer using the thick calcium nitrate of nitrophosphate fertilizer accessory substance, no
Need to consume nitric acid material so that cost of material is further reduced, and technological process is simple and easy to control, it is easy to real
Existing industrialization.The nitric acid ca and mg fertilizer being prepared by the method for the present invention, is full water soluble fertilizer product, can be improved
Fruit appearance color and luster and finish, improve fruit quality and yield, improve fruit grade.
Illustrated with reference to specific embodiment, it should be appreciated that following embodiments are only as a tool
Body embodiment is illustrated to embodiment of the present invention technical scheme, is not meant as the unique of the embodiment of the present invention
Technical scheme.
Embodiment：
It is 16.8%, magnesium weight that one kind prepares calcium weight percentage using the thick calcium nitrate of nitrophosphate fertilizer accessory substance
The method of the nitric acid ca and mg fertilizer that percentage composition is 2.2%, zinc weight percentage is 0.02%, including following step
Suddenly, as shown in Figure 2：
S11. offer prepares the thick calcium nitrate of accessory substance of nitrophosphate fertilizer：By thick nitric acid after nitrophosphate fertilizer freezing and crystallizing
Calcium, is separated by filtration and beats to thick nitre calcium liquid dashpot, and neutralization reaction groove 1 is delivered to by thick nitre calcium pump；
S12. to magnesia or magnesium hydroxide and zinc oxide is added in the calcium nitrate, it is mixed to get nitric acid calcium and magnesium
Zinc mixed solution, specifically includes following steps：
S121. (such as thick calcium nitrate mass concentration is the content of calcium in the thick nitric acid calcium concentration for being obtained according to detection
60%), the addition of setting magnesia (or magnesium hydroxide) and zinc oxide, adjusts thick calcium nitrate solution, oxygen
It is 30.7 to change magnesium, zinc oxide mass ratio：1：0.006 (calcium, magnesium, zinc mass ratio be 4.5：1：0.0033)；
S122. by the magnesia (or magnesium hydroxide) under the hopper of neutralization chamber top to after belt scale metering
It is delivered to neutralization reaction groove 1；
S123. zinc oxide conveying worm is delivered to neutralization reaction groove 1, magnesia (or magnesium hydroxide),
There is neutralization reaction in the free acid (free acid mass concentration about 6%) in zinc oxide and the thick calcium nitrate；
S13. the nitric acid calcium and magnesium zinc mixed solution filtered successively, concentrated and granulation treatment, obtained richness
The water-soluble calcium nitrate magnesium granules fertilizer of zinc, specifically includes following steps：
S131. the filtrate after neutralization is squeezed into coarse filtration feeder trough 2, plate compression is delivered to by coarse filtration feed pump
Machine 3 carries out press filtration (coarse filtration) treatment, isolates insoluble matter waste residue, obtains the first filtrate；
S132. first filtrate after press filtration enters clear liquid groove 4, and proportioning groove is delivered to by clear liquid groove pumping
5, according to nitric acid calcium and magnesium zinc clear liquid calcium and magnesium Zn content ratio, pH value, add magnesia (or magnesium hydroxide),
Zinc oxide, nitric acid, thick calcium nitrate solution are finely adjusted to first filtrate；
S133. first filtrate is conveyed by refined filtration feed pump and filters (refined filtration) treatment again to filter press 6,
The second filtrate is obtained after filtering out filter residue；
S134. second filtrate enters evaporation feeder trough 7, is delivered to preheater 8 by evaporation feed pump pre-
Heat, temperature rises to 110 degree by 90 degree；
S135. the second filtrate filtrate after the pre-heat treatment enters heat exchanger 9, and evaporation feed temperature is by 110
Degree is increased to 140 degree；
S136. second filtrate enters forced-circulation evaporator 10, second filtrate is heated to boiling point
150~155 DEG C are evaporated, and evaporation enters granulation feeder trough 12 after completing；
S137. feed liquid is delivered to rotary drum granulator 13 and is granulated by granulation feeder trough；Then by screening
14 (mesh size 1mm~4mm), the particle of qualified size through cooling 16, make after anti-compaction treatment 17
Calcium nitrate magnesium products 18 are obtained, is sieved after underproof particle is crushed through disintegrating machine 15 and is entered back into rotary drum granulator
13 granulations, screening 14, cooling 16, calcium nitrate magnesium products 18 are obtained after anti-compaction treatment 17.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in this hair
Any modification, equivalent and improvement made within bright spirit and principle etc., should be included in the present invention
Protection domain within.
Claims (9)
1. the method that the nitric acid ca and mg fertilizer of zinc-rich is prepared using nitrophosphate fertilizer accessory substance calcium nitrate, including following step
Suddenly：
Offer prepares the thick calcium nitrate of accessory substance of nitrophosphate fertilizer；
Neutralization reaction is carried out to magnesia or magnesium hydroxide and zinc oxide is added in the calcium nitrate, is mixed
To nitric acid calcium and magnesium zinc mixed solution；
The nitric acid calcium and magnesium zinc mixed solution is filtered successively, is concentrated and granulation treatment, obtaining being rich in is had
The water-soluble calcium nitrate magnesium granules fertilizer of zinc.
2. the nitric acid calcium and magnesium of zinc-rich is prepared using nitrophosphate fertilizer accessory substance calcium nitrate as claimed in claim 1
The method of fertilizer, it is characterised in that counted as 100% with the gross weight of the calcium nitrate magnesium granules fertilizer of the zinc-rich, it is water-soluble
Property magnesium percentage by weight be 1.0~6.5%；The percentage by weight of water-soluble calcium is 10~16%；Water-soluble zinc
Percentage by weight be 0.002~0.02%.
3. the nitric acid calcium and magnesium of zinc-rich is prepared using nitrophosphate fertilizer accessory substance calcium nitrate as claimed in claim 1
The method of fertilizer, it is characterised in that the PH of the nitric acid calcium and magnesium zinc mixed solution is 6.0~7.0.
4. the nitric acid calcium and magnesium of zinc-rich is prepared using nitrophosphate fertilizer accessory substance calcium nitrate as claimed in claim 3
The method of fertilizer, it is characterised in that enter to addition magnesia or magnesium hydroxide and zinc oxide in the calcium nitrate
After the step of row neutralization reaction, also including being carried out to the pH value of the nitric acid calcium and magnesium zinc mixed solution using nitric acid
Regulation is processed.
5. the nitric acid calcium and magnesium of zinc-rich is prepared using nitrophosphate fertilizer accessory substance calcium nitrate as claimed in claim 4
The method of fertilizer, it is characterised in that adjusted to the pH value of the nitric acid calcium and magnesium zinc mixed solution using nitric acid
Before section treatment and afterwards, the nitric acid calcium and magnesium zinc mixed solution is carried out into coarse filtration and refined filtration separating treatment respectively,
Filter off insoluble matter.
6. the utilization nitrophosphate fertilizer accessory substance calcium nitrate as described in claim 1-5 is any prepares the nitre of zinc-rich
The method of sour ca and mg fertilizer, it is characterised in that the evaporating temperature of the concentration is 150~155 DEG C.
7. the utilization nitrophosphate fertilizer accessory substance calcium nitrate as described in claim 1-5 is any prepares the nitre of zinc-rich
The method of sour ca and mg fertilizer, it is characterised in that the temperature of the granulation treatment is 50~90 DEG C, and pressure is ﹣
100~﹣ 500Pa.
8. the utilization nitrophosphate fertilizer accessory substance calcium nitrate as described in claim 1-5 is any prepares the nitre of zinc-rich
The method of sour ca and mg fertilizer, it is characterised in that after the granulation process step, also including to the calcium nitrate
Magnesium granules fertilizer carries out sieving treatment, obtains the calcium nitrate magnesium granules fertilizer that particle diameter is 1~4mm.
9. the utilization nitrophosphate fertilizer accessory substance calcium nitrate as described in claim 1-5 is any prepares the nitre of zinc-rich
The method of sour ca and mg fertilizer, it is characterised in that after the granulation process step, also including cooling treatment, institute
It is 30~50 DEG C to state the temperature of cooling treatment, and pressure is ﹣ 100~﹣ 500Pa, humidity≤60%.
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Cited By (3)
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| CN111362757A (en) * | 2020-05-23 | 2020-07-03 | 广西南宁华夏农业科技有限公司 | Organic medium element fertilizer produced by using magnesium hydroxide and preparation method thereof |
| CN112037931A (en) * | 2020-07-15 | 2020-12-04 | 新疆维吾尔自治区人民医院 | Aldosterone increase prediction system applied to suspected primary aldosteronism |
| CN114213174A (en) * | 2021-12-31 | 2022-03-22 | 山西卓联锐科科技有限公司 | Calcium nitrate magnesium fertilizer and preparation method thereof |
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| CN104725098A (en) * | 2015-03-20 | 2015-06-24 | 路永宽 | Method for producing all-water-soluble calcium ammonium magnesium nitrate by steel strip granulation |
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| CN103833444A (en) * | 2014-03-14 | 2014-06-04 | 交城县金兰化工有限公司 | Magnesium nitrate-calcium nitrate complex salt type compound fertilizer and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111362757A (en) * | 2020-05-23 | 2020-07-03 | 广西南宁华夏农业科技有限公司 | Organic medium element fertilizer produced by using magnesium hydroxide and preparation method thereof |
| CN112037931A (en) * | 2020-07-15 | 2020-12-04 | 新疆维吾尔自治区人民医院 | Aldosterone increase prediction system applied to suspected primary aldosteronism |
| CN112037931B (en) * | 2020-07-15 | 2023-10-20 | 新疆维吾尔自治区人民医院 | Aldosteronism prediction system for use in suspected primary aldosteronism |
| CN114213174A (en) * | 2021-12-31 | 2022-03-22 | 山西卓联锐科科技有限公司 | Calcium nitrate magnesium fertilizer and preparation method thereof |
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Application publication date: 20170704 |