Large-particle slow/controlled-release fertilizer with multi-layer coating structure and coating equipment of fertilizer

A slow-controlled-release fertilizer and multi-layer coating technology, applied in fertilizer forms, fertilization devices, fertilizer mixtures, etc., can solve the problem that slow-controlled-release fertilizers cannot be achieved, the sulfur coating is easy to fall off or damage, and the coating structure is easy to damage. and other problems to achieve the effect of beautiful appearance

Active Publication Date: 2013-02-06
CHONGQING JINMANDI FERTILIZER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In addition, the coating structure of slow-release fertilizers is easy to damage and defertilize. For example, the sulfur-coated large particle slow-release fertilizers in the Chinese patent CN101709018A will easily cause the sulfur film to fall off during the handling process and fail to achieve the purpose of slow and controlled release. And the sulfur-coated large-grain slow-release fertilizer is likely to cause defertilization of crops due to insufficient fertilizer release caused by drought in the early stage
[0004] Disadvantages of the existing technology: general slow-release fertilizers cannot meet the needs of crops for different nutrient ratios in different periods, and the sulfur coating is easy to fall off or be damaged before use, failing to achieve the purpose of slow-release fertilizers

Method used

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  • Large-particle slow/controlled-release fertilizer with multi-layer coating structure and coating equipment of fertilizer
  • Large-particle slow/controlled-release fertilizer with multi-layer coating structure and coating equipment of fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: The preparation of the large particle slow-controlled release fertilizer of multi-layer coating structure of the present invention is:

[0027] 1. Preparation of Large Granular Fertilizer 1

[0028] Weigh 200 kg of urea and put it into the urea melting device to melt and keep it between 110-130 degrees, add 60 kg of monoammonium phosphate and 73 kg of potassium chloride and stir well, keep the temperature between 110-130 degrees and pour it through the filling machine Put it into a 3.5 cm spherical mold. After the mold is cooled to the shape of the fertilizer inside, open the mold to obtain spherical large particle fertilizer.

[0029] Two, the preparation of sulfur coating 2

[0030] According to parts by weight, 80 parts of sulfur, 5 parts of montmorillonite, 10 parts of microcrystalline paraffin and 5 parts of heavy oil are respectively melted and loaded into 3 spraying boxes. First add 80 parts of molten sulfur to 5 parts of montmorillonite, mix and ...

Embodiment 2

[0039] Embodiment 2: The preparation of the large particle slow-controlled release fertilizer of the multi-layer coating structure of the present invention is:

[0040] 1. Preparation of large particle fertilizer

[0041] Weigh 500 kg of urea and put it into the urea melting device to melt and keep it between 120-130 degrees, add 300 kg of 200-mesh weathered coal, add 3 kg of sodium hydroxide and stir for 20 minutes, then add 100 kg of monoammonium phosphate And 90 kg of potassium sulfate, add 5 kg of boron fertilizer, add 2 kg of zinc fertilizer and stir well, still keep the temperature between 110-130 degrees, pour it into a 5 cm spherical mold through the filling machine, and wait for the mold to cool down to the fertilizer inside After forming, the mold is opened to obtain spherical large particle fertilizer.

[0042] Two, the preparation of sulfur coating 2

[0043]With 95 parts of sulfur and 5 parts of montmorillonite in parts by weight, first melt 95 parts of sulfur a...

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Abstract

The invention relates to a large-particle slow / controlled-release fertilizer with a multi-layer coating structure and coating equipment of the fertilizer. According to the invention, a sulfur coating is coated outside the large-particle fertilizer, and a fertilizer coating is coated outside the sulfur coating. The coating equipment consists of a heating incubator, a screen and the like, wherein one end of the screen (5) is high, and the other end of the screen (5) is low; a particle funnel (9) and 2-10 spray boxes (10) are successively arranged above the screen (5) from the high end to the low end; 2-10 recovery tanks (11) are arranged under the screen (5) in turn from the high end to the low end; and the low end of the screen (5) is provided with a conveying belt (12). The obtained fertilizer can realize the different requirements of various growth periods on NPK elements through adjustment of fertilizer formula of each layer of coating, so that the sulfur coating is well ensured not to fall or be damaged; and simultaneously, the fertilizer has the advantages of beautiful appearance, no crack, no adhesion, no caking and the like.

Description

technical field [0001] The invention belongs to the field of fertilizer manufacturing, in particular, relates to a novel multi-layer coating structure large particle slow-controlled release fertilizer and coating equipment thereof Background technique [0002] At present, general slow-release fertilizers cannot release nutrients according to the regular characteristics of crop fertilizer requirements, especially when a crop is only fertilized once a season, and only one large-grain slow-release fertilizer is applied to a litter at a time. For example, corn crops need a lot of nutrients in the early, middle and late stages, and the ratios of nitrogen, phosphorus, and potassium nutrients required in the early, middle, and late stages are also different. This requires slow-release fertilizers to release different nitrogen, phosphorus, and potassium in different periods. Matching function. [0003] In addition, the coating structure of slow-release fertilizers is easy to damage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G5/00C05G1/00C05G1/06
Inventor 尹明灯
Owner CHONGQING JINMANDI FERTILIZER
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