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Tower-type melt granulation bi-directional regulation compound fertilizer and preparation method thereof

A tower-type melt granulation, two-way control technology, applied in the direction of urea compound fertilizer, nitrogen fertilizer, potash fertilizer, etc., can solve the problems of inconsistent crop fertilizer requirements, unbalanced release of compound fertilizer nutrients, and low fertilizer efficiency and utilization rate. Achieve the effect of improving crop quality, nutrient release, and improving disease resistance

Inactive Publication Date: 2017-11-03
史丹利化肥扶余有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many kinds of compound fertilizers on the market, but the nutrient release of most compound fertilizers is unbalanced, some are too slow, some are too fast, which cannot be well consistent with the law of crop fertilizer requirements, resulting in low fertilizer efficiency and utilization. Can not benefit the growth and development of crops

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A tower-type melt granulation bidirectional control compound fertilizer, which is composed of a fertilizer core, a first layer of coating agent and a second layer of coating agent; the fertilizer core: the first layer of coating agent: the second layer of coating The mass ratio of film agent is 100:3:5;

[0029] The fertilizer core is made of the following raw materials in parts by weight: 480 parts of urea, 150 parts of urea-formaldehyde, 210 parts of monoammonium phosphate, 180 parts of potassium chloride, 40 parts of humic acid, 4 parts of alginic acid, and 1 part of zinc sulfate , 1 part of boric acid, 5 parts of seaweed residue, 1 part of modified nano titanium dioxide;

[0030] The first layer of coating agent is made by mixing chitosan and salicylic acid derivative poly(4-N-methacrylic acid aminobenzoic acid) in an equimolar ratio;

[0031] The second layer of coating agent is composed of silanized modified zeolite and peat soil according to a weight ratio of 1:...

Embodiment 2

[0041] A tower-type melt granulation bidirectional control compound fertilizer, which is composed of a fertilizer core, a first layer of coating agent and a second layer of coating agent; the fertilizer core: the first layer of coating agent: the second layer of coating The mass ratio of film agent is 100:3:5;

[0042] The fertilizer core is made of the following raw materials in parts by weight: 540 parts of urea, 250 parts of urea-formaldehyde, 250 parts of monoammonium phosphate, 220 parts of potassium chloride, 80 parts of humic acid, 6 parts of alginic acid, and 5 parts of zinc sulfate , 5 parts of boric acid, 10 parts of seaweed residue, 3 parts of modified nano titanium dioxide;

[0043] The first layer of coating agent is made by mixing chitosan and salicylic acid derivative poly(4-N-methacrylic acid aminobenzoic acid) in an equimolar ratio;

[0044] The second layer of coating agent is composed of silanized modified zeolite and peat soil according to a weight ratio o...

Embodiment 3

[0054] A tower-type melt granulation bidirectional control compound fertilizer, which is composed of a fertilizer core, a first layer of coating agent and a second layer of coating agent; the fertilizer core: the first layer of coating agent: the second layer of coating The mass ratio of film agent is 100:3:5;

[0055] The fertilizer core is made of the following raw materials in parts by weight: 500 parts of urea, 200 parts of urea-formaldehyde, 230 parts of monoammonium phosphate, 200 parts of potassium chloride, 60 parts of humic acid, 5 parts of alginic acid, and 3 parts of zinc sulfate , 3 parts of boric acid, 8 parts of seaweed residue, and 2 parts of modified nano titanium dioxide.

[0056] The first layer of coating agent is made by mixing chitosan and salicylic acid derivative poly(4-N-methacrylic acid aminobenzoic acid) in an equimolar ratio;

[0057] The second layer of coating agent is composed of silanized modified zeolite and peat soil according to a weight rati...

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Abstract

The invention discloses tower-type melt granulation bi-directional regulation compound fertilizer and a preparation method thereof and belongs to the technical field of fertilizer. The fertilizer is prepared from a fertilizer core, a first-layer encapsulating agent and a second-layer encapsulating agent, wherein the mass ratio of the fertilizer core to the first-layer encapsulating agent to the second-layer encapsulating agent is 100 to 3 to 5. The preparation method comprises the following steps: mixing urea formaldehyde with other organic and inorganic fertilizer components, and granulating; then carrying out encapsulating treatment on the surface of a mixture for two times to obtain a finished product. The tower-type melt granulation bi-directional control compound fertilizer has rapidly-released nutrients and long-acting release nutrients, and the nutrients are slow and assisted in release; meanwhile, modified nanometer titania is added in the tower-type melt granulation bi-directional control compound fertilizer to serve as a raw material, so that the dispersity of slurry in the granulation process can be improved, the granulation uniformity is enhanced, and the nutrients are released more uniformly; besides, the components also can be used for effectively absorbing heavy metal ions in soil, so that the planting safety of crops is improved.

Description

technical field [0001] The invention relates to a tower-type melt granulation two-way regulation compound fertilizer and a preparation method thereof, belonging to the technical field of fertilizers. Background technique [0002] Fertilizer occupies a very important position in agricultural production and is the largest material investment in agricultural production. my country is a large agricultural country, and the amount of fertilizer used is huge. However, due to the unreasonable application of fertilizers, the use of pesticides and chemical fertilizers in farmland for a long time, the harmful residues are serious, the lack of organic nutrients and trace elements, and the imbalance of nitrogen, phosphorus, and potassium have led to the emergence of agricultural production today. Five major problems: firstly, it causes serious soil compaction, which makes it difficult for farmers to cultivate; secondly, the rotten roots of crops in the farmland are not heading, and the ra...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/08C05G3/90
CPCC05B7/00C05G3/00C05G3/90C05G5/30C05G5/37C05C9/00C05C9/02C05D1/02C05D9/02C05F11/00C05F11/02
Inventor 李善龙赵攀
Owner 史丹利化肥扶余有限公司
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