CN109053229A - A kind of preparation method of anti-caking water soluble fertilizer - Google Patents
A kind of preparation method of anti-caking water soluble fertilizer Download PDFInfo
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- CN109053229A CN109053229A CN201810992393.7A CN201810992393A CN109053229A CN 109053229 A CN109053229 A CN 109053229A CN 201810992393 A CN201810992393 A CN 201810992393A CN 109053229 A CN109053229 A CN 109053229A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D5/00—Fertilisers containing magnesium
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C5/00—Fertilisers containing other nitrates
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C5/00—Fertilisers containing other nitrates
- C05C5/02—Fertilisers containing other nitrates containing sodium or potassium nitrate
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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 invention belongs to technical field of fertilizer manufacture, and in particular to a kind of preparation method of anti-caking water soluble fertilizer；The specific technical proposal is: a kind of preparation method of anti-caking water soluble fertilizer, specific preparation step is uniformly to mix water soluble fertilizer dehydrating agent with components such as water soluble fertilizers containing the crystallization water, water-soluble fertilizer dehydrating agent out siphons away the free moisture for being centrifuged the resulting surface of water soluble fertilizer containing the crystallization water, so that resulting product is in quicksand like, have the advantages that fertilizer efficiency is high, good without insoluble component, extended storage stability using water soluble fertilizer product prepared by the method for the present invention.
Description
Technical field
The invention belongs to technical field of fertilizer manufacture, and in particular to a kind of preparation method of anti-caking water soluble fertilizer.
Background technique
Complex fertilizer accounting in chemical fertilizer production and consumption is increasing, and complex fertilizer is easy to moisture absorption in production and storage and transport process
Agglomeration, directly affects its normal use and fertilizer efficiency.How to solve complex fertilizer agglomeration problems is that fertilizer industry is ground both at home and abroad for many years
The hot spot studied carefully.Common inorganic anti-caking and diatomite, bentonite is mostly used to receive, the fillers such as bentonite calcium, kaolin, zeolite,
These fillers are coated on fertiliser granulates surface, are acted on using its physical isolation to prevent from agglomerating, usage amount is larger, can also cause powder
Dirt causes environmental pollution.In addition, many water-insoluble fillers are not able to satisfy the requirement of water-soluble fertilizer.
Water soluble fertilizer is a kind of polyelement composite fertilizer that can be promptly dissolved in the water, it is easier to it is absorbed by crops, and
Its absorption rate is relatively high.Similarly, water soluble fertilizer is particularly easy to the problem of agglomerating in production and storage and transportation, main
It wants the reason is that moisture absorption, surface dissolution evaporation occur for fertilizer crystal grain, recrystallization to form crystal brige, causes little particle to become big
Grain and agglomerate.Since water-soluble fertilizer is to the requirement of water-insoluble finite quantity, the anti-caking agent added in common fertilizer is not suitable for
Water-soluble fertilizer.
Chinese patent CN2013105260547 discloses a kind of preparation method of nutrition potentiating and anti-caking block complex fertilizer, is
Complex fertilizer and DA-6 crude oil are sent in proportion into mixing and blending machine and dispensed after mixing evenly.CN2014108041692
Disclose a kind of Synergistic type a great number of elements water-soluble fertilizer anticaking agent, 50-100 parts of building component, 0.5-2 parts of anticaking compound；
Anticaking compound is made of silica series product and surfactant 1:3-5 in mass ratio；Avoiding activating agent is C12-C18
Sodium alkyl benzene sulfonate or benzene sulfonamide acid potassium salt.Preparation method is the deionized water that surfactant is added to 80-90 DEG C
In, it stirs evenly, clear colloidal liquid is made；Be added silica series product, 30-40 DEG C stirs evenly, high temperature drying to get
Anticaking compound；The anticaking compound of preparation is uniformly mixed under the conditions of 20-30 DEG C with building component.Patent
CN2015104648465 discloses a kind of anti-caking fertilizer and preparation method thereof, using the synergist of content 0.5-4%, synergist
Oxidant, manganese oxide, iron oxide are selected, the surface for being wrapped in fertilizer core, which forms fertiliser granulates, to be physically isolated, while can be mentioned
For multiple element.Preparation method is that synergist is crossed to the sieve of 50-500 mesh, and synergist is equably wrapped in fertilizer core surface,
It avoids spraying phosphoric acid in the fertilizer core for being enclosed with synergist.Patent CN2016103795989 discloses a kind of novel anti-caking
The preparation method of granulated fertilizer is to spray package sulphur lotion on granulated fertilizer surface, obtains having hydrophobic structure after drying
Sulphur wrapping layer, this wrapping layer itself do not have a water solubility, and elemental sulfur compared with water-soluble component by plant utilize when
Between can not synchronize.Patent CN2017100693367 discloses a kind of anticaking agent and preparation method thereof of aqueous fertiliser, anti-caking
Agent is by aqueous high molecular, surfactant, low-carbon alcohol and water, and oil, powder coating can not be used by solving powdery or crystalloid chemical fertilizer
The problem of carrying out anti-caking.CN20171043104343894 discloses a kind of fertilizer anti-caking agents and preparation method thereof, is using powder
The components such as coal ash, dehydrated alcohol, vegetable oil are made, wherein the materials such as flyash do not have by processes such as milling, drying, mixing
There is water solubility, is also not suitable for the anti-caking auxiliary agent as full water soluble fertilizer.Patent CN2009103025620 discloses a kind of fertilizer
Anticaking agent and its preparation method and application, component include ten difluoro enanthol sulphosuccinates, ammonium salt, phosphate, fat
Acid and paraffin etc..It is prepared using processes such as thawing, fusion, slices, fertilizer table is coated to using heating and melting spray pattern
Face.Patent CN107188656A discloses a kind of pulvis organic-inorganic water-soluble fertilizer, including water soluble organic substance, a great number of elements water
Molten fertilizer, moderate-element water-soluble fertilizer, water-soluble anticaking agent.Moderate-element water-soluble fertilizer is anhydrous magnesium sulfate, chelated magnesium, chela
Close at least one of calcium.Water-soluble anticaking agent is lauryl sodium sulfate, neopelex, polyethylene glycol
2000, disodium ethylene diamine tetraacetate, at least one in complete water-soluble anticaking agent JY-02, water soluble fertilizer anticaking agent WFAC01
Kind.
Domestic and international existing fertilizer preventing blocking technology, it is most of all joined to the additive of the nonnutritive value of crop or
Auxiliary agent is unfavorable for the effect of improving fertilizer, therefore, the present invention is intended to provide a kind of whole component all has fertilizer efficiency and has anti-caking
The quicksand like four water-calcium nitrate fertilizer of block characteristic.
Summary of the invention
To solve the technical issues of water soluble fertilizer is easy agglomeration, the present invention provides a kind of whole components all to have fertilizer
Effect, method for preparing fertilizer soluble easily in water, with anti-caking characteristics.
To achieve the above object, the technical scheme adopted by the invention is as follows: a kind of preparation side of anti-caking water soluble fertilizer
Method, comprising the following steps:
One, anhydrous magnesium sulfate, anhydrous magnesium chloride, anhydrous nitric acid magnesium or anhydrous nitric acid calcium are prepared using the method for dehydration, adopted
With one of above-mentioned anhydrous magnesium sulfate, anhydrous magnesium chloride, anhydrous nitric acid magnesium or anhydrous nitric acid calcium or more than one mixture
As water-soluble powder fertilizer dehydrating agent.
Two, by water soluble fertilizer dehydrating agent obtained in step 1, it is added in the water-soluble powder fertilizer containing the crystallization water
And uniformly mix, the additional amount of water soluble fertilizer dehydrating agent accounts for the 2%-20% of water-soluble powder fertilizer quality, by water soluble fertilizer
Dehydrating agent is packed after evenly mixing with water-soluble powder fertilizer, obtains the water soluble fertilizer with anti-caking ability.
It will be using the graininess containing the crystallization water of the water-soluble powder fertilizer of the method for the present invention preparation and traditional handicraft preparation
Water soluble fertilizer is stored 30 days under 50% humidity and 30 DEG C of environment respectively, and there is no caking phenomenons substantially for the former, and the latter ties
Block is serious.
Wherein, the method for dehydration is microwave dehydration method in above-mentioned steps one, and specific processing method is as follows:
One of four water magnesium sulfates containing the crystallization water, six water magnesium sulfates or mixture are placed in hopper, using frequency
Microwave dehydration is carried out for the microwave generator of 2.45GHz, the microwave dehydration temperature control in hopper is at 100 DEG C -150 DEG C, microwave
Dewatering time control obtains anhydrous magnesium sulfate, crushes after dewatered anhydrous magnesium sulfate is cooling, anhydrous magnesium sulfate in 5min-10min
Powder diameter control within 0.5mm.
Magnesium chloride hexahydrate containing the crystallization water is placed in hopper, frequency is used to carry out for the microwave generator of 2.45GHz
Microwave dehydration, microwave dehydration temperature control in hopper at 100 DEG C -150 DEG C, the control of microwave dehydration time in 5min-10min,
Anhydrous magnesium chloride, crushed after dewatered anhydrous magnesium chloride is cooling, the powder diameter control of anhydrous magnesium chloride 0.5mm it
It is interior.
Magnesium nitrate hexahydrate containing the crystallization water is placed in hopper, frequency is used to carry out for the microwave generator of 2.45GHz
Microwave dehydration, microwave dehydration temperature control in hopper at 100 DEG C -150 DEG C, the control of microwave dehydration time in 5min-10min,
Anhydrous nitric acid magnesium, crushed after dewatered anhydrous nitric acid magnesium is cooling, the powder diameter control of anhydrous nitric acid magnesium 0.5mm it
It is interior.
The six water calcium nitrate containing the crystallization water are placed in hopper, frequency is used to carry out for the microwave generator of 2.45GHz
Microwave dehydration, microwave dehydration temperature control in hopper at 100 DEG C -150 DEG C, the control of microwave dehydration time in 5min-10min,
Anhydrous nitric acid calcium, crushed after dewatered anhydrous nitric acid calcium is cooling, the powder diameter control of anhydrous nitric acid calcium 0.5mm it
It is interior.
Wherein, water-soluble powder fertilizer is four water magnesium sulfates containing the crystallization water, six water magnesium sulfates, magnesium chloride hexahydrate, six
The mixture of one or more of water magnesium nitrate, six water calcium nitrate.
Compared with prior art, the present invention specifically having the beneficial effect that:
One, the calcium salt or magnesium salts containing the crystallization water with fertilizer efficiency are used as anticaking agent by the present invention after dehydration, with by from
The water soluble fertilizer Direct Uniform mixing containing the crystallization water of heart separation, anticaking agent is by the water soluble fertilizer surface containing the crystallization water
Moisture siphons away, and mixed material is in quicksand like, both solves the problems, such as agglomeration, also improves effective magnesium or calcium constituent in fertilizer
Content, investment of production equipment is small, easy to operate.
Two, using the water soluble fertilizer product of the method for the present invention preparation with no insoluble component, extended storage stability
Good advantage.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Closing specific embodiment, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
Embodiment one
A kind of preparation method of anti-caking water soluble fertilizer, comprising the following steps:
Step 1: one of four water magnesium sulfates containing the crystallization water, six water magnesium sulfates or mixture are placed in hopper, adopt
Microwave dehydration is carried out with the microwave generator that frequency is 2.45GHz, the control of microwave dehydration temperature in hopper is at 100 DEG C, microwave
Dewatering time control obtains anhydrous magnesium sulfate, crushes after dewatered anhydrous magnesium sulfate is cooling, the powder of anhydrous magnesium sulfate in 10min
Last partial size is 0.5mm.
Step 2: six water magnesium sulfate products are centrifugated out from magnesium sulfate solution, it will be anhydrous obtained in step 1
Magnesium sulfate powder is added in six water magnesium sulfates and uniformly mixes, and anhydrous slufuric acid magnesium dust and the mass ratio of six water magnesium sulfates are
2%, anhydrous slufuric acid magnesium dust siphons away the moisture to dissociate on six water magnesium sulfates, and mixed product is in quicksand like.After preparation
Anti-caking water soluble fertilizer is stored 60 days in 30 DEG C of environment that relative humidity is 50% not to agglomerate substantially.As a comparison, using biography
Six water magnesium sulfate particles of the crystallization processes preparation of system agglomerate more serious under identical storage environment after 60 days.
Embodiment two
A kind of preparation method of anti-caking water soluble fertilizer, comprising the following steps:
Step 1: one of four water magnesium sulfates containing the crystallization water, six water magnesium sulfates or mixture are placed in hopper, adopt
Microwave dehydration is carried out with the microwave generator that frequency is 2.45GHz, the control of microwave dehydration temperature in hopper is at 150 DEG C, microwave
Dewatering time control obtains anhydrous magnesium sulfate, crushes after dewatered anhydrous magnesium sulfate is cooling, the powder of anhydrous magnesium sulfate in 5min
Partial size is 0.4mm.
Step 2: six water magnesium sulfate products are centrifugated out from magnesium sulfate solution, it will be anhydrous obtained in step 1
Magnesium sulfate powder is added in six water magnesium sulfates and uniformly mixes, and anhydrous slufuric acid magnesium dust and the mass ratio of six water magnesium sulfates are
20%, anhydrous slufuric acid magnesium dust siphons away the moisture to dissociate on six water magnesium sulfates, and mixed product is in quicksand like.After preparing
Anti-caking water soluble fertilizer store 50 days and do not agglomerate substantially in 30 DEG C of environment that relative humidity is 50%.As a comparison, it uses
Six water magnesium sulfate particles of traditional crystallization processes preparation agglomerate more serious under identical storage environment after 50 days.
Embodiment three
A kind of preparation method of anti-caking water soluble fertilizer, comprising the following steps:
Step 1: one of four water magnesium sulfates containing the crystallization water, six water magnesium sulfates or mixture are placed in hopper, adopt
Microwave dehydration is carried out with the microwave generator that frequency is 2.45GHz, the control of microwave dehydration temperature in hopper is at 130 DEG C, microwave
Dewatering time control obtains anhydrous magnesium sulfate, crushes after dewatered anhydrous magnesium sulfate is cooling, the powder of anhydrous magnesium sulfate in 8min
Partial size is 0.3mm.
Step 2: six water magnesium sulfate products are centrifugated out from magnesium sulfate solution, it will be anhydrous obtained in step 1
Magnesium sulfate powder is added in six water magnesium sulfates and uniformly mixes, and anhydrous slufuric acid magnesium dust and the mass ratio of six water magnesium sulfates are
10%, anhydrous slufuric acid magnesium dust siphons away the moisture to dissociate on six water magnesium sulfates, and mixed product is in quicksand like.After preparing
Anti-caking water soluble fertilizer store 40 days and do not agglomerate substantially in 30 DEG C of environment that relative humidity is 50%.As a comparison, it uses
Six water magnesium sulfate particles of traditional crystallization processes preparation agglomerate more serious under identical storage environment after 40 days.
Example IV
A kind of preparation method of anti-caking water soluble fertilizer, comprising the following steps:
Step 1: the magnesium chloride hexahydrate containing the crystallization water is placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 150 DEG C, the microwave dehydration time controls in 5min the microwave dehydration temperature control in hopper, obtains anhydrous chlorination
Magnesium crushes after dewatered anhydrous magnesium chloride is cooling, and the powder diameter of anhydrous magnesium chloride is 0.5mm.
Step 2: magnesium chloride hexahydrate product is centrifugated out from magnesium chloride brine, it will be anhydrous obtained in step 1
Magnesium chloride powder is added in magnesium chloride hexahydrate and uniformly mixes, and the mass ratio of anhydrous magnesium chloride and magnesium chloride hexahydrate is
20%, anhydrous magnesium chloride siphons away the moisture to dissociate on magnesium chloride hexahydrate, and mixed product is in quicksand like.After preparing
Anti-caking water soluble fertilizer store 60 days and do not agglomerate substantially in 30 DEG C of environment that relative humidity is 50%.As a comparison, it uses
The magnesium chloride hexahydrate particle of traditional crystallization processes preparation agglomerates more serious under identical storage environment after 60 days.
Embodiment five
A kind of preparation method of anti-caking water soluble fertilizer, comprising the following steps:
Step 1: the magnesium chloride hexahydrate containing the crystallization water is placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 100 DEG C, the microwave dehydration time controls in 10min the microwave dehydration temperature control in hopper, obtains anhydrous chlorination
Magnesium crushes after dewatered anhydrous magnesium chloride is cooling, and the powder diameter of anhydrous magnesium chloride is 0.4mm.
Step 2: magnesium chloride hexahydrate product is centrifugated out from magnesium chloride brine, it will be anhydrous obtained in step 1
Magnesium chloride powder is added in magnesium chloride hexahydrate and uniformly mixes, and the mass ratio of anhydrous magnesium chloride and magnesium chloride hexahydrate is
2%, anhydrous magnesium chloride siphons away the moisture to dissociate on magnesium chloride hexahydrate, and mixed product is in quicksand like.After preparation
Anti-caking water soluble fertilizer is stored 50 days in 30 DEG C of environment that relative humidity is 50% not to agglomerate substantially.As a comparison, using biography
The magnesium chloride hexahydrate particle of the crystallization processes preparation of system agglomerates more serious under identical storage environment after 50 days.
Embodiment six
A kind of preparation method of anti-caking water soluble fertilizer, comprising the following steps:
Step 1: the magnesium chloride hexahydrate containing the crystallization water is placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 130 DEG C, the microwave dehydration time controls in 8min the microwave dehydration temperature control in hopper, obtains anhydrous chlorination
Magnesium crushes after dewatered anhydrous magnesium chloride is cooling, and the powder diameter of anhydrous magnesium chloride is 0.3mm.
Step 2: magnesium chloride hexahydrate product is centrifugated out from magnesium chloride brine, it will be anhydrous obtained in step 1
Magnesium chloride powder is added in magnesium chloride hexahydrate and uniformly mixes, and the mass ratio of anhydrous magnesium chloride and magnesium chloride hexahydrate is
13%, anhydrous magnesium chloride siphons away the moisture to dissociate on magnesium chloride hexahydrate, and mixed product is in quicksand like.After preparing
Anti-caking water soluble fertilizer store 30 days and do not agglomerate substantially in 30 DEG C of environment that relative humidity is 50%.As a comparison, it uses
The magnesium chloride hexahydrate particle of traditional crystallization processes preparation agglomerates more serious under identical storage environment after 30 days.
Embodiment seven
A kind of preparation method of anti-caking water soluble fertilizer, comprising the following steps:
Step 1: the magnesium nitrate hexahydrate containing the crystallization water is placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 150 DEG C, the microwave dehydration time controls in 5min the microwave dehydration temperature control in hopper, obtains anhydrous nitric acid
Magnesium crushes after dewatered anhydrous nitric acid magnesium is cooling, and the powder diameter of anhydrous nitric acid magnesium is 0.5mm.
Step 2: magnesium nitrate hexahydrate product is centrifugated out from magnesium nitrate aqueous solution, it will be anhydrous obtained in step 1
Nitric acid magnesium dust is added in magnesium nitrate hexahydrate and uniformly mixes, and the mass ratio of anhydrous nitric acid magnesium dust and magnesium nitrate hexahydrate is
20%, anhydrous nitric acid magnesium dust siphons away the moisture to dissociate on magnesium nitrate hexahydrate, and mixed product is in quicksand like.After preparing
Anti-caking water soluble fertilizer store 60 days and do not agglomerate substantially in 30 DEG C of environment that relative humidity is 50%.As a comparison, it uses
The magnesium nitrate hexahydrate particle of traditional crystallization processes preparation agglomerates more serious under identical storage environment after 60 days.
Embodiment eight
A kind of preparation method of anti-caking water soluble fertilizer, comprising the following steps:
Step 1: the magnesium nitrate hexahydrate containing the crystallization water is placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 100 DEG C, the microwave dehydration time controls in 10min the microwave dehydration temperature control in hopper, obtains anhydrous nitric acid
Magnesium crushes after dewatered anhydrous nitric acid magnesium is cooling, and the powder diameter of anhydrous nitric acid magnesium is 0.4mm.
Step 2: magnesium nitrate hexahydrate product is centrifugated out from magnesium nitrate aqueous solution, it will be anhydrous obtained in step 1
Nitric acid magnesium dust is added in magnesium nitrate hexahydrate and uniformly mixes, and the mass ratio of anhydrous nitric acid magnesium dust and magnesium nitrate hexahydrate is
2%, anhydrous nitric acid magnesium dust siphons away the moisture to dissociate on magnesium nitrate hexahydrate, and mixed product is in quicksand like.After preparation
Anti-caking water soluble fertilizer is stored 45 days in 30 DEG C of environment that relative humidity is 50% not to agglomerate substantially.As a comparison, using biography
The magnesium nitrate hexahydrate particle of the crystallization processes preparation of system agglomerates more serious under identical storage environment after 45 days.
Embodiment nine
A kind of preparation method of anti-caking water soluble fertilizer, comprising the following steps:
Step 1: the magnesium nitrate hexahydrate containing the crystallization water is placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 120 DEG C, the microwave dehydration time controls in 8min the microwave dehydration temperature control in hopper, obtains anhydrous nitric acid
Magnesium crushes after dewatered anhydrous nitric acid magnesium is cooling, and the powder diameter of anhydrous nitric acid magnesium is 0.3mm.
Step 2: magnesium nitrate hexahydrate product is centrifugated out from magnesium nitrate aqueous solution, it will be anhydrous obtained in step 1
Nitric acid magnesium dust is added in magnesium nitrate hexahydrate and uniformly mixes, and the mass ratio of anhydrous nitric acid magnesium dust and magnesium nitrate hexahydrate is
10%, anhydrous nitric acid magnesium dust siphons away the moisture to dissociate on magnesium nitrate hexahydrate, and mixed product is in quicksand like.After preparing
Anti-caking water soluble fertilizer store 35 days and do not agglomerate substantially in 30 DEG C of environment that relative humidity is 50%.As a comparison, it uses
The magnesium nitrate hexahydrate particle of traditional crystallization processes preparation agglomerates more serious under identical storage environment after 35 days.
Embodiment ten
Step 1: the six water calcium nitrate containing the crystallization water are placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 150 DEG C, the microwave dehydration time controls in 5min the microwave dehydration temperature control in hopper, obtains anhydrous nitric acid
Calcium crushes after dewatered anhydrous nitric acid calcium is cooling, and the powder diameter of anhydrous nitric acid calcium is 0.5mm.
Step 2: six water nitric acid calcium products are centrifugated out from calcium nitrate aqueous solution, it will be anhydrous obtained in step 1
Nitric acid calcium powder is added in six water calcium nitrate and uniformly mixes, and anhydrous nitric acid calcium powder and the mass ratio of six water calcium nitrate are
20%, anhydrous nitric acid calcium powder siphons away the moisture to dissociate on six water calcium nitrate, and mixed product is in quicksand like.After preparing
Anti-caking water soluble fertilizer store 60 days and do not agglomerate substantially in 30 DEG C of environment that relative humidity is 50%.As a comparison, it uses
Six water calcium nitrate granules of traditional crystallization processes preparation agglomerate more serious under identical storage environment after 60 days.
Embodiment 11
Step 1: the six water calcium nitrate containing the crystallization water are placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 100 DEG C, the microwave dehydration time controls in 10min the microwave dehydration temperature control in hopper, obtains anhydrous nitric acid
Calcium crushes after dewatered anhydrous nitric acid calcium is cooling, and the powder diameter of anhydrous nitric acid calcium is 0.4mm.
Step 2: six water nitric acid calcium products are centrifugated out from calcium nitrate aqueous solution, it will be anhydrous obtained in step 1
Nitric acid calcium powder is added in six water calcium nitrate and uniformly mixes, and anhydrous nitric acid calcium powder and the mass ratio of six water calcium nitrate are
2%, anhydrous nitric acid calcium powder siphons away the moisture to dissociate on six water calcium nitrate, and mixed product is in quicksand like.After preparation
Anti-caking water soluble fertilizer is stored 20 days in 30 DEG C of environment that relative humidity is 50% not to agglomerate substantially.As a comparison, using biography
Six water calcium nitrate granules of the crystallization processes preparation of system agglomerate more serious under identical storage environment after 20 days.
Embodiment 12
Step 1: the six water calcium nitrate containing the crystallization water are placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 120 DEG C, the microwave dehydration time controls in 8min the microwave dehydration temperature control in hopper, obtains anhydrous nitric acid
Calcium crushes after dewatered anhydrous nitric acid calcium is cooling, and the powder diameter of anhydrous nitric acid calcium is 0.3mm.
Step 2: six water nitric acid calcium products are centrifugated out from calcium nitrate aqueous solution, it will be anhydrous obtained in step 1
Nitric acid calcium powder is added in six water calcium nitrate and uniformly mixes, and anhydrous nitric acid calcium powder and the mass ratio of six water calcium nitrate are
10%, anhydrous nitric acid calcium powder siphons away the moisture to dissociate on six water calcium nitrate, and mixed product is in quicksand like.After preparing
Anti-caking water soluble fertilizer store 40 days and do not agglomerate substantially in 30 DEG C of environment that relative humidity is 50%.As a comparison, it uses
Six water calcium nitrate granules of traditional crystallization processes preparation agglomerate more serious under identical storage environment after 40 days.
Embodiment 13
Step 1: the six water calcium nitrate containing the crystallization water are placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 150 DEG C, the microwave dehydration time controls in 5min the microwave dehydration temperature control in hopper, obtains anhydrous nitric acid
Calcium crushes after dewatered anhydrous nitric acid calcium is cooling, and the powder diameter of anhydrous nitric acid calcium is 0.5mm.
Step 2: six water potassium nitrate products are centrifugated out from potassium nitrate aqueous solution, it will be anhydrous obtained in step 1
Nitric acid calcium powder is added in six water potassium nitrate and uniformly mixes, and anhydrous nitric acid calcium powder and the mass ratio of six water potassium nitrate are
20%, anhydrous nitric acid calcium powder siphons away the moisture to dissociate on six water potassium nitrate, and mixed product is calcium ammonium nitrate particle, produces
Product are in quicksand like.Anti-caking water soluble fertilizer after preparation is stored to 60 days in 30 DEG C of environment that relative humidity is 50% substantially
It does not agglomerate.As a comparison, the calcium ammonium nitrate particle prepared using traditional crystallization processes is passed through under identical storage environment
It agglomerates after 60 days more serious.
Embodiment 14
Step 1: the six water calcium nitrate containing the crystallization water are placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 100 DEG C, the microwave dehydration time controls in 5min the microwave dehydration temperature control in hopper, obtains anhydrous nitric acid
Calcium crushes after dewatered anhydrous nitric acid calcium is cooling, and the powder diameter of anhydrous nitric acid calcium is 0.4mm.
Step 2: six water potassium nitrate products are centrifugated out from potassium nitrate aqueous solution, it will be anhydrous obtained in step 1
Nitric acid calcium powder is added in six water potassium nitrate and uniformly mixes, and anhydrous nitric acid calcium powder and the mass ratio of six water potassium nitrate are
2%, anhydrous nitric acid calcium powder siphons away the moisture to dissociate on six water potassium nitrate, and mixed product is calcium ammonium nitrate particle, product
In quicksand like.Anti-caking water soluble fertilizer after preparation is stored 25 days substantially not in 30 DEG C of environment that relative humidity is 50%
Agglomeration.As a comparison, the calcium ammonium nitrate particle prepared using traditional crystallization processes, under identical storage environment, by 25
It agglomerates after it more serious.
Embodiment 15
Step 1: the six water calcium nitrate containing the crystallization water are placed in hopper, use frequency for the microwave generator of 2.45GHz into
Row microwave dehydration, at 120 DEG C, the microwave dehydration time controls in 7min the microwave dehydration temperature control in hopper, obtains anhydrous nitric acid
Calcium crushes after dewatered anhydrous nitric acid calcium is cooling, and the powder diameter of anhydrous nitric acid calcium is 0.3mm.
Step 2: six water potassium nitrate products are centrifugated out from potassium nitrate aqueous solution, it will be anhydrous obtained in step 1
Nitric acid calcium powder is added in six water potassium nitrate and uniformly mixes, and anhydrous nitric acid calcium powder and the mass ratio of six water potassium nitrate are
10%, anhydrous nitric acid calcium powder siphons away the moisture to dissociate on six water potassium nitrate, and mixed product is calcium ammonium nitrate particle, produces
Product are in quicksand like.Anti-caking water soluble fertilizer after preparation is stored to 40 days in 30 DEG C of environment that relative humidity is 50% substantially
It does not agglomerate.As a comparison, the calcium ammonium nitrate particle prepared using traditional crystallization processes is passed through under identical storage environment
It agglomerates after 40 days more serious.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all wrap within the scope of the present invention within mind and principle.
Claims (3)
1. a kind of preparation method of anti-caking water soluble fertilizer, which comprises the following steps:
One, anhydrous magnesium sulfate, anhydrous magnesium chloride, anhydrous nitric acid magnesium or anhydrous nitric acid calcium are prepared using the method for dehydration, adopted
With one of above-mentioned anhydrous magnesium sulfate, anhydrous magnesium chloride, anhydrous nitric acid magnesium or anhydrous nitric acid calcium or more than one mixture
As water soluble fertilizer dehydrating agent；
Two, by water soluble fertilizer dehydrating agent obtained in step 1, it is added in the water-soluble powder fertilizer containing the crystallization water, it is described
The additional amount of water soluble fertilizer dehydrating agent accounts for the 2%-20% of water-soluble powder fertilizer quality, by water soluble fertilizer dehydrating agent with it is water-soluble
Property powder fertilizer is packed after evenly mixing, obtains the water soluble fertilizer with anti-caking ability.
2. a kind of preparation method of anti-caking water soluble fertilizer according to claim 1, which is characterized in that institute in step 1
The method for stating dehydration is microwave dehydration method:
One of four water magnesium sulfates containing the crystallization water, six water magnesium sulfates or mixture are placed in hopper, using frequency
Microwave dehydration is carried out for the microwave generator of 2.45GHz, the microwave dehydration temperature control in hopper is at 100 DEG C -150 DEG C, microwave
Dewatering time control obtains anhydrous magnesium sulfate, crushes after dewatered anhydrous magnesium sulfate is cooling, anhydrous magnesium sulfate in 5min-10min
Powder diameter control within 0.5mm；
Magnesium chloride hexahydrate containing the crystallization water is placed in hopper, frequency is used to carry out microwave for the microwave generator of 2.45GHz
It is dehydrated, at 100 DEG C -150 DEG C, the microwave dehydration time controls in 5min-10min the microwave dehydration temperature control in hopper, obtains nothing
Aqueous magnesium chloride crushes after dewatered anhydrous magnesium chloride is cooling, and the powder diameter of anhydrous magnesium chloride controls within 0.5mm；
Magnesium nitrate hexahydrate containing the crystallization water is placed in hopper, frequency is used to carry out microwave for the microwave generator of 2.45GHz
It is dehydrated, at 100 DEG C -150 DEG C, the microwave dehydration time controls in 5min-10min the microwave dehydration temperature control in hopper, obtains nothing
Water magnesium nitrate crushes after dewatered anhydrous nitric acid magnesium is cooling, and the powder diameter of anhydrous nitric acid magnesium controls within 0.5mm；
The six water calcium nitrate containing the crystallization water are placed in hopper, frequency is used to carry out microwave for the microwave generator of 2.45GHz
It is dehydrated, at 100 DEG C -150 DEG C, the microwave dehydration time controls in 5min-10min the microwave dehydration temperature control in hopper, obtains nothing
Water calcium nitrate crushes after dewatered anhydrous nitric acid calcium is cooling, and the powder diameter of anhydrous nitric acid calcium controls within 0.5mm.
3. a kind of preparation method of anti-caking water soluble fertilizer according to claim 2, which is characterized in that the water solubility
Powder fertilizer is four water magnesium sulfates containing the crystallization water, six water magnesium sulfates, magnesium chloride hexahydrate, magnesium nitrate hexahydrate, six water calcium nitrate
One or more of mixture.
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| CN113999073A (en) * | 2021-11-08 | 2022-02-01 | 山西华鑫肥业股份有限公司 | Anti-caking process for nitro compound fertilizer |
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Application publication date: 20181221 |