Magnesium ammonium phosphate inorganic-organic binder fertilizer and preparation method thereof

A technology of magnesium ammonium phosphate and organic glue, which is applied in the field of comprehensive utilization of resources, can solve the problems of high production cost of wrapped slow/controlled release fertilizers, secondary pollution of binder solution spraying, and low nitrogen content of slow-release fertilizers. The effects of drug cost, long release time, and gentle release rate

Inactive Publication Date: 2018-10-16
JINGDEZHEN CERAMIC INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Aiming at the technical problems that the nitrogen content of ammonium magnesium phosphate slow-release fertilizer is not high, the production cost of wrapped slow / controlled release fertilizer is relatively high, the production method is complicated, the risk of secondary pollution exists, and the binder solution is not uniformly sprayed, the present invention provides a Magnesium ammonium phosphate inorganic-organic cement fertilizer and its preparation method

Method used

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  • Magnesium ammonium phosphate inorganic-organic binder fertilizer and preparation method thereof
  • Magnesium ammonium phosphate inorganic-organic binder fertilizer and preparation method thereof
  • Magnesium ammonium phosphate inorganic-organic binder fertilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Raw materials: 1000g magnesium ammonium phosphate, 50g modified starch, 1000g organic fertilizer.

[0059] A preparation method of magnesium ammonium phosphate inorganic-organic cemented fertilizer, comprising the following steps:

[0060] 1) Grind 1000g of magnesium ammonium phosphate and 50g of modified starch into small particles of about 1 μm, and mix well;

[0061] 2) Take 5% of the mixture in step 1), and place it in a disc granulator;

[0062] 3) Spray water on the rotating magnesium ammonium phosphate and modified starch granules by means of atomization;

[0063] 4) Slowly add 100g (i.e. 10% of the total amount of organic fertilizer) organic fertilizer that is ground into 1 μm small particles into the magnesium ammonium phosphate and modified starch material in step 3);

[0064] 5) water spray granulation;

[0065] 6) After the material is converted into particles of about 1mm, repeat step 2) to step 5) in a slow adding manner, wherein the amount of magnesium...

Embodiment 2

[0076] Raw materials: 2000g magnesium ammonium phosphate, 200g modified starch, 1000g organic fertilizer.

[0077] A preparation method of magnesium ammonium phosphate inorganic-organic cemented fertilizer, comprising the following steps:

[0078] 1) Grind 2000g of magnesium ammonium phosphate and 200g of modified starch into small particles of 100 μm and 20 μm respectively, and mix well;

[0079] 2) Take 10% of the mixture in step 1), and place it in a disc granulator;

[0080] 3) Spray water on the rotating magnesium ammonium phosphate and modified starch granules by means of atomization;

[0081] 4) Slowly add 150g (i.e. 15% of the total amount of organic fertilizer) organic fertilizer that is ground into 100 μm small particles into the magnesium ammonium phosphate and modified starch material in step 3);

[0082] 5) water spray granulation;

[0083] 6) After the material is converted into particles of about 1 mm, repeat step 2) to step 5) in a slow adding manner, wherei...

Embodiment 3

[0088] Raw materials: 3000g magnesium ammonium phosphate, 240g modified starch, 1000g organic fertilizer.

[0089] A preparation method of magnesium ammonium phosphate inorganic-organic cemented fertilizer, comprising the following steps:

[0090] 1) Grind 3000g of magnesium ammonium phosphate and 240g of modified starch into small particles of 200 μm and 50 μm respectively, and mix well;

[0091] 2) Take 8% of the mixture in step 1), and place it in a disc granulator;

[0092] 3) Spray water on the rotating magnesium ammonium phosphate and modified starch granules by means of atomization;

[0093] 4) Slowly add 140g (i.e. 14% of the total amount of organic fertilizer) organic fertilizer that is ground into 200 μm small particles in the magnesium ammonium phosphate and modified starch material in step 3);

[0094] 5) water spray granulation;

[0095] 6) After the material is converted into particles of about 1mm, repeat step 2) to step 5) in a slow adding manner, wherein th...

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Abstract

The invention discloses a magnesium ammonium phosphate inorganic-organic binder fertilizer and a preparation method thereof, and belongs to the technical field of comprehensive utilization of resources. Magnesium ammonium phosphate is taken as a wrapping material of the magnesium ammonium phosphate inorganic-organic binder fertilizer; magnesium ammonium phosphate particles and an organic fertilizer are wrapped on the organic fertilizer in a layered form by a modified starch binder and granulated to obtain the magnesium ammonium phosphate inorganic-organic binder fertilizer; the magnesium ammonium phosphate particles and organic fertilizer particles form magnesium ammonium phosphate inorganic-organic binder particles in a layered form; by taking a magnesium ammonium phosphate slow release fertilizer as the wrapping material, the release rate of the organic fertilizer is effectively controlled, and the needs of crops for multi-element nutrients such as nitrogen, phosphorus, magnesium andthe like are satisfied; at the same time, a nutrient release curve of the binder fertilizer shows that the release of nutrient elements is gentle, so that the long-term growth needs of the crops canbe met, and the waste of the fertilizer can be avoided; and the binder fertilizer has no side effects on the crops or the growth environment of the crops, and does not cause soil hardening.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of resources, and in particular relates to an inorganic-organic cemented fertilizer and a preparation method thereof. Background technique [0002] At present, quick-acting fertilizers are mainly used in my country, and the release speed of quick-acting fertilizers is fast and the cycle is short, resulting in low fertilizer utilization efficiency. According to research reports, the utilization rate of nitrogen fertilizer in my country is only 60-70%, which is 15-20% lower than that of developed countries. The world's chemical fertilizers are developing towards high concentration, compounding, and slow / controlled release, but our chemical fertilizers are still mainly low-concentration and single nutrient elements. The nutritional content of fertilizers cannot meet the needs of crop growth, or the law of fertilizer release is not synchronized with the law of nutrient element deman...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05G5/12C05G5/30C05D1/00C05F3/00
Inventor 余荣台马湘谢志鹏汪长安赵戈谌怡雯甘益民
Owner JINGDEZHEN CERAMIC INSTITUTE
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