Anti-leaching fertilizer and preparation method thereof

A fertilizer and leaching technology, which is applied to fertilizer mixtures, layered/coated fertilizers, nitrogen fertilizers, etc., can solve the problems of easy leaching and low utilization rate, and achieve a high utilization rate, low cost, and simple and easy process. Effect

Inactive Publication Date: 2020-05-05

SHENZHEN BATIAN ECOTYPIC ENG

5 Cites 1 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, provide a kind of anti-leaching fertilize...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Abstract

The invention belongs to the technical field of agricultural fertilizers, and particularly relates to an anti-leaching fertilizer and a preparation method thereof. The anti-leaching fertilizer comprises urea particles, lignin layers for coating the urea particles and bonding layers which are located between the urea particles and the lignin layer; wherein the bonding layers are composed of modified lignin. The anti-leaching fertilizer has a very good anti-leaching effect, the utilization rate of fertilizer nutrients can be increased, and meanwhile, lignin is a renewable, non-toxic, cheap and biodegradable natural organic matter, so that the anti-leaching fertilizer not only has a slow release effect, but also has the characteristics of no pollution and environmental friendliness, and is remarkably superior to the prior art.

Application Domain

Climate change adaptationAgriculture gas emission reduction +3

Technology Topic

Natural organic matterFertilizer +6

Image

Examples

Experimental program(7)

Example Embodiment

[0023] On the other hand, the embodiment of the present invention also provides a method for preparing an anti-leaching fertilizer, which includes the following steps:

[0024] S01: Provide urea particles;

[0025] S02: The urea particles are pre-heated, and then the modified lignin solution is sprayed on the surface of the urea particles. After the drying treatment, the urea particles coated with the bonding layer are obtained; wherein the bonding layer is modified Lignin composition;

[0026] S03: coating lignin powder on the surface of the bonding layer to form a lignin layer to obtain the anti-leaching fertilizer.

[0027] The preparation method of the anti-leaching fertilizer provided by the embodiment of the present invention is a fertilizer coating technology process. Specifically, a bonding layer is formed on the surface of urea particles, and then a lignin layer is formed on the surface of the bonding layer, thereby obtaining The unique structure of the anti-leaching fertilizer; the preparation method is simple and easy to implement, and the cost is low, and finally the coated anti-leaching fertilizer has a good anti-leaching effect, can improve the utilization rate of fertilizer nutrients, and has no Pollution and environmental friendliness.

[0028] Further, in the above step S01: the urea particles are the main body of the fertilizer, and the specific particle size and nitrogen content selection have been described above.

[0029] Further, in the above step S02: the preparation method of the modified lignin solution includes: dissolving the lignin material and the modifier at a mass ratio of 1:10 to obtain the modified lignin solution. Preferably, the modifier is wood vinegar, and the preparation method of the wood vinegar includes: pulverizing rice straw and pyrolyzing it at 350-450°C. Specifically, the wood vinegar liquid prepared by pyrolysis at 400° C. on a continuous pyrolysis reaction device after removing impurities from rice straw and crushing. The main components of the wood vinegar are acids, phenols, ketones, etc., which have a better modification effect (improvement of cohesiveness) on lignin materials.

[0030] In order to better perform the coating process, the urea particles are pre-heated first; preferably, the temperature of the pre-heat treatment is 45-55° C. and the time is 5-10 min. It can be used to preheat the urea particles with hot air for 5-10 minutes. In order to better obtain the urea particles coated with the adhesive layer, the temperature of the drying treatment is 65-75° C. and the time is 5-10 min. Preferably, hot air at about 70° C. is blown for 5 minutes to form a bonding layer on the surface of the urea particles.

[0031] Further, in the above step S03: the lignin powder is obtained through an 80 mesh sieve. The process of coating the lignin powder on the surface of the bonding layer is: mixing the lignin powder with the urea particles covered by the bonding layer, rotating in a rotating drum for 3-5 minutes, and then drying through a drying cylinder at 50°C.

[0032] In an embodiment of the present invention, such as figure 2 As shown, the preparation method of anti-leaching fertilizer includes the following:

[0033] (1) Take the lignin material and the modifier according to the mass ratio of 1:10 to prepare a modified lignin binder, which is dissolved and used;

[0034] (2) The urea particles are sieved through a 2-4mm sieve and put into the drum coating machine equipment, and hot air is passed in for 5-10 minutes to preheat the urea particles.

[0035] (3) Spray the modified lignin binder obtained in step (1) evenly on the urea particles, and blow hot air at about 70°C for 5 minutes.

[0036] (4) On the basis of step (3), a certain amount of lignin powder is evenly added to the rotating drum and rotated for 3-5 minutes.

[0037] (5) Steps (4) are repeated 2-3 times in this order, and then dried at 50° C. through a drying cylinder to obtain a lignin-coated fertilizer, that is, the anti-leaching fertilizer.

Example Embodiment

[0039] Example 1

[0040] An anti-leaching fertilizer with the following ingredients:

[0041] Modifier lignin binder: 1 part;

[0042] Lignin powder: 1 part;

[0043] Urea granules: 98 parts.

[0044] The preparation method includes: preheating the urea particles, spraying the modified lignin binder on the surface of the urea particles, and performing hot air drying treatment to obtain the urea particles coated with the binding layer; and coating the lignin powder A lignin layer is formed on the surface of the bonding layer to obtain a lignin-coated anti-leaching fertilizer.

Example Embodiment

[0045] Example 2

[0046] An anti-leaching fertilizer with the following ingredients:

[0047] Modifier lignin binder: 2 parts;

[0048] Lignin powder: 1 part;

[0049] Urea granules: 97 parts.

[0050] The preparation method is the same as in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to view more

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to view more

Cement-based sound insulation leveling adhesive material for overall sound insulation floor and preparation method thereof

InactiveCN105060815AEasy to useGood bonding performanceComposite materialCement Material

Owner:GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD +1

Classification and recommendation of technical efficacy words

Good bonding performance

Method of producing lithium iron phosphate with high compacted density and excellent adhesive property

InactiveCN101152961AGood winding performanceGood bonding performanceCell electrodesPhosphorus compoundsNitrogen atmosphereOxide

Owner:天津科斯特汽车技术有限责任公司

Conductive adhesive for lithium ion batteries, preparation method thereof, electrode plate of lithium ion battery, preparation method thereof and lithium ion battery

ActiveCN107369835AGood electrical conductivityGood bonding performanceSecondary cellsNon-aqueous electrolyte accumulator electrodesPolyvinylidene fluorideSodium carboxymethylcellulose

Owner:HUAWEI TECH CO LTD

Anti-leaching fertilizer and preparation method thereof

A fertilizer and leaching technology, which is applied to fertilizer mixtures, layered/coated fertilizers, nitrogen fertilizers, etc., can solve the problems of easy leaching and low utilization rate, and achieve a high utilization rate, low cost, and simple and easy process. Effect

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

Similar technology patents

Vegetable source pesticide suspension

Electrochromatic epoxy resin polymer and preparation method thereof

Thermoplastic polyurethane composition with low viscosity and high adhesive strength and preparation method thereof

Method for preparing high-viscosity heat-resistant resin with ethylene tar as raw material

Cement-based sound insulation leveling adhesive material for overall sound insulation floor and preparation method thereof

Classification and recommendation of technical efficacy words

Method of producing lithium iron phosphate with high compacted density and excellent adhesive property

Conductive adhesive for lithium ion batteries, preparation method thereof, electrode plate of lithium ion battery, preparation method thereof and lithium ion battery

Addition type organic silicon rubber tackifier, preparation method and application thereof

Pervious concrete special-purpose additive and use thereof

Water-based aluminium foil adhesive for cigarette packing and preparation method thereof