Organosilicone water soluble long-acting compound fertilizer and preparation method thereof

A technology of organosilicon and compound fertilizers, applied in fertilization devices, fertilizer mixtures, applications, etc., can solve problems such as waste of resources and energy, endangering human survival and health, excessive application of chemical fertilizers, etc., to avoid environmental hazards and benefit packaging The effect of membrane manipulation

Active Publication Date: 2012-07-18
河北硅谷肥业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the chemical fertilizers are inorganic salts, which are soluble and easily soluble in water. This "instant" and quick-acting feature is not in harmony with the demand for nutrients in the growth process of crops, resulting in excessive application, loss, and waste of chemical fertilizers. and pollute the environment
Especially the nitrogen fertilizer with the largest amount, usually the actual utilization rate is only 30% to 40%, it only uses about 1 / 3, and 2 / 3 is lost
The high consumption and low efficiency of this kind of fertilizer not only leads to a huge waste of resources and energy, but also deteriorates the ecological environment and endangers human survival and health.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: Prepare N-P-K as 15-6-15 coated compound fertilizer, and the controlled release time is 30 days.

[0017] ①Preparation of water-soluble granular kernel: 28kg of urea, 12.5kg of ammonium bicarbonate, 8kg of superphosphate, 15kg of calcium magnesium phosphate fertilizer, 23.5kg of potassium chloride, trace elements (including ferrous sulfate, zinc sulfate, copper sulfate, manganese sulfate and borax, etc.) 4kg, urinary nitrogen inhibitory stabilizer (HQ, DCD) 0.03kg, after metering, add to the crushing mixer, crush and mix at high speed for 15-30 minutes, then add 5kg of 10% PVA aqueous solution (adhesive), stir After 5-10 minutes, after mixing evenly, send it to a drum granulator to obtain round compound (mixed) fertilizer granules with a particle size of 2-3mm. After drying, sieve, and return the crushed powder to mix and granulate.

[0018] ② Preparation of coating agent: take 16.4kg CH 3 SiCl 3 , 3kg (CH 3 ) 2 SiCl 2 , 0.6kgC 8 h 17 (CH 3 )Si(OCH 3...

Embodiment 2

[0027] Example 2: Prepare N-P-K as 24-10-11 coated compound fertilizer with controlled release time of 60 days.

[0028] ①Preparation of water-soluble granular kernels: add 52.5kg of urea, 23.5kg of superphosphate, 15kg of potassium chloride, and 0.01kg of urine nitrogen inhibitor stabilizer into the crushing mixer after metering, crush and mix at high speed for 15-30 minutes, and then Add 5 kg of 10% PVA aqueous solution, stir for 5-10 minutes, and after mixing evenly, send it into a drum granulator to obtain round compound fertilizer granules with a particle size of 2-3 mm. grain.

[0029] ②Preparation of coating agent: same as step ② in Example 1.

[0030] ③ Coating: Add 92.5kg of water-soluble granular kernels into the drum coating machine, preheat to 120°C, spray about 12kg of coating agent intermittently, maintain the temperature at 120°C during the spraying process, and evaporate the water vapor from the The exhaust fan is discharged, and the temperature is raised to ...

Embodiment 3

[0031] Example 3: N-P-K was prepared as 19-7-9 coated compound fertilizer, and the controlled release time was 90 days.

[0032] ①Preparation of water-soluble granular core: 42.5kg of urea, 8kg of heavy superphosphate, 24kg of calcium magnesium phosphate fertilizer, and 12.5kg of potassium chloride are added to the crushing mixer after measurement, crushed and mixed at high speed for 15-30 minutes, and then add 10% 5 kg of PVA aqueous solution, stirred for 5-10 minutes, mixed evenly and sent to a drum granulator to obtain round compound fertilizer granules with a particle size of 2-3 mm, which were dried and sieved, and the crushed powder was returned for mixing and granulation.

[0033] ②Preparation of coating agent: same as step ② in Example 1.

[0034] ③ Coating: Add 90.5kg of water-soluble granular kernels into the drum coating machine, preheat to 120°C, spray about 16kg of coating agent intermittently, maintain the temperature at 120°C during the spraying process, and eva...

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Abstract

The invention belongs to the technical field of enveloping type slow controlled release long-acting compound fertilizers, adopts organosilicone to clad compound fertilizer particles, forms an environment-friendly slow controlled release compound fertilizer, and further relates to a preparation method of the compound fertilizer. The organosilicone water soluble long-acting compound fertilizer is formed by a water soluble particle core and a hydrophobicity polymer outer enveloping layer. The preparation method is 1 preparing the water soluble particle core, enabling urea, triple superphosphate and potassium chloride to serve as main nutrient elements, smashing, mixing, prilling and drying to obtain particle fertilizers and enabling the particle fertilizers to serve as cores of enveloping fertilizers; 2 preparing an enveloping agent, enabling monomethyl trichlorosilane to serve as main raw materials, conducting cohydrolysis and condensation, and preparing modified organosilicone methyl silicone resin polymers after washing and disacidification; and 3 enveloping, putting the water soluble particle core in an enveloping machine, preheating, spraying the enveloping agent at interval, heating and keeping warm, conducting dehydration polycondensation crosslinking solidification, and forming a hydrophobicity methyl silicone resin film on the surface of the particle core of the fertilizer. The organosilicone water soluble long-acting compound fertilizer is free of the three wastes and free of toxic and side effects and environmental contamination in the whole manufacture and using processes, and belongs to environment-friendly products.

Description

technical field [0001] The invention belongs to the technical field of coated slow-controlled release long-acting compound fertilizers, and relates to using organic silicon to coat compound fertilizer particles to form an environment-friendly slow-controlled release compound fertilizer and a preparation method thereof. Background technique [0002] In modern agricultural production, the application of chemical fertilizers is one of the important means to increase crop yield and high yield. However, most of the chemical fertilizers are inorganic salts, which are soluble and easily soluble in water. This "instant" and quick-acting feature is not in harmony with the demand for nutrients in the growth process of crops, resulting in excessive application, loss, and waste of chemical fertilizers. and pollute the environment. Especially the nitrogen fertilizer with the largest amount, usually the actual utilization rate is only 30% to 40%, it only uses about 1 / 3, and 2 / 3 is lost. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/08C05G3/90
Inventor 宋福如
Owner 河北硅谷肥业有限公司
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