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Wrapping layer, medium trace element-containing externally-wrapped stable fertilizer with wrapping layer and preparation method of medium trace element-containing externally-wrapped stable fertilizer

A technology of medium and trace elements, coating layer, applied in the direction of layered/coated fertilizers, inorganic fertilizers, fertilizer mixtures, etc., can solve the problems of high cost of nano-scale raw materials and limited practical application.

Pending Publication Date: 2020-04-07
SINOCHEM AGRI LINYI R&D CENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual production, medium and trace elements are also added by wrapping nanoscale medium and trace elements, but the cost of nanoscale raw materials is very high, which limits the practical application of this process

Method used

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  • Wrapping layer, medium trace element-containing externally-wrapped stable fertilizer with wrapping layer and preparation method of medium trace element-containing externally-wrapped stable fertilizer
  • Wrapping layer, medium trace element-containing externally-wrapped stable fertilizer with wrapping layer and preparation method of medium trace element-containing externally-wrapped stable fertilizer
  • Wrapping layer, medium trace element-containing externally-wrapped stable fertilizer with wrapping layer and preparation method of medium trace element-containing externally-wrapped stable fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The preparation method of the outer package type stable fertilizer is as follows:

[0052] (1) Mix 0.5 kg of sulfuric acid with a mass concentration of 70% and 0.5 kg of phosphoric acid with a mass concentration of 85%, then add 1 kg of 3,4-dimethylpyrazole phosphate (DMPP) into the mixed acid solution Stir until completely dissolved to form an acid solution containing the inhibitor.

[0053] (2) In the wrapping drum, evenly spray 2 kg of the above-mentioned inhibitor acid solution onto 1000 kg of fertilizer particles with a particle size of 1 to 4 mm and a temperature of 40 to 50° C. to wrap the fertilizer particles.

[0054] (3) After the material stays in the wrapping drum for 15-20 minutes, the wrapping is completed and the fertilizer is cooled and packed, that is, the outer-wrapped stable fertilizer is prepared. Comparative example 2

Embodiment 2

[0058] The preparation method of the outer package type stable fertilizer of the present embodiment is as follows:

[0059] (1) 1 kilogram of mass concentration is 70% sulfuric acid, 1 kilogram of mass concentration is the phosphoric acid of 85% and mixes evenly, then 2 kilograms of n-butyl thiophosphoric triamide (NBPT) are joined in the mixed acid solution and stirred , until completely dissolved to form an acid solution containing inhibitors.

[0060] (2) In the wrapping drum, evenly spray 4 kg of the above-mentioned inhibitor acid solution onto 1000 kg of fertilizer particles with a particle size of 1-4 mm and a temperature of 40-50° C. to wrap the fertilizer particles.

[0061] (3) After the material stays in the wrapping drum for 15-20 minutes, the wrapping is completed and the fertilizer is cooled and packed, that is, the outer-wrapped stable fertilizer is prepared.

Embodiment 3

[0066] The preparation method of the outer package type stable fertilizer of the present embodiment is as follows:

[0067] (1) be that 50% sulfuric acid, 3 kilograms of mass concentration are 50% phosphoric acid, 2 kilograms of mass concentration be 40% formic acid with 3 kilograms of mass concentration, mix, then 3 kilograms of n-butyl thiophosphoric triamide ( NBPT) and 0.5 kg of 3,4-dimethylpyrazole phosphate (DMPP) were added to the mixed acid solution and stirred until completely dissolved to form an acid solution containing the inhibitor.

[0068] (2) Fully mix 2 kg of magnesium oxide, 2 kg of zinc sulfate monohydrate, and 1 kg of ferrous sulfate heptahydrate powder that have passed through a 80-150 mesh sieve.

[0069] (3) In the wrapping drum, evenly spray 11.5kg of the above-mentioned inhibitor acid solution onto 1000kg of fertilizer particles with a particle size of 1-4mm and a temperature of 40-50°C, and at the same time add 5kg of the above-mentioned medium and tr...

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Abstract

The invention discloses a wrapping layer, a medium trace element-containing externally-wrapped stable fertilizer with the wrapping layer and a preparation method of the medium trace element-containingexternally-wrapped stable fertilizer. The wrapping layer comprises an inhibitor, and the inhibitor is formed in the wrapping layer by spraying an acid liquor containing the inhibitor. The inhibitor in the wrapping layer is formed in the wrapping layer by spraying acid liquor containing the inhibitor; the inhibitor is added in the form of being dissolved in the acid liquor; compared with solid state, the advantages are that, uniform dispersion of the inhibitor can be ensured in the mixing process; therefore, the inhibitor is uniformly dispersed in the wrapping layer; the wrapping layer can befirmly attached to the surfaces of fertilizer particles; falling off is not easily caused, the actual content of the inhibitor in the obtained fertilizer is more consistent with the theoretical content, and it is ensured that the fertilizer is high in nutrient utilization rate; in addition, due to the addition of the acid liquor, the fertilizer has certain acidity, and when the fertilizer is usedfor alkaline soil, the effects of adjusting the pH value of the soil and improving the soil can be achieved, fertilizer using amount can be reduced, the efficiency can be improved, the crop yield canbe increased, and the crop quality can be improved.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, and in particular relates to a wrapping layer, an outer-wrapped stable fertilizer containing medium and trace elements with the wrapping layer and a preparation method thereof. Background technique [0002] Fertilizers play a vital role in my country's agricultural production, but extensive fertilizer application methods have also brought about a series of problems such as environmental pollution, land function degradation, and resource waste. In response to the above phenomena, the state has introduced many policies to respond, such as the "National Fertilizer Use Zero Growth Action Plan by 2020", which encourages the fertilizer industry to develop in the direction of efficient use of nutrients, light and simplified application, and comprehensive and balanced nutrients. Therefore, how to improve the nutrient utilization efficiency of fertilizers and how to provide comprehensive and sufficien...

Claims

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Application Information

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IPC IPC(8): C05G3/80C05G3/00C05G5/30
CPCC05D5/00C05G3/00
Inventor 焦卫平王峥刘朋飞刘晓波任先顺孙鹰翔曲树栋
Owner SINOCHEM AGRI LINYI R&D CENT CO LTD
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