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A kind of colored slow-release compound fertilizer and its preparation method

A slow-release compound fertilizer and color technology, applied in urea compound fertilizer, potash fertilizer, nitrogen fertilizer and other directions, can solve the problems of small particle size, single color and short fertilizer effect time of compound fertilizer, and achieve large particle size and simple production process. , the effect of long-term fertilizer effect

Active Publication Date: 2019-03-08
SHENZHEN BATIAN ECOTYPIC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, provide a colored slow-release compound fertilizer, and solve the technical problems of the compound fertilizer prepared in the prior art with small particle size, short fertilizer effect time and single color

Method used

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  • A kind of colored slow-release compound fertilizer and its preparation method
  • A kind of colored slow-release compound fertilizer and its preparation method
  • A kind of colored slow-release compound fertilizer and its preparation method

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preparation example Construction

[0031] Correspondingly, the embodiments of the present invention further provide a method for preparing the above-mentioned colored slow-release compound fertilizer, comprising the following steps:

[0032]S01, weighing raw materials: weighing the above-mentioned nitrogen-containing compound, phosphorus-containing compound, potassium-containing compound, trace element compound and filler by electronic weighing according to the formula of the above-mentioned colored slow-release compound fertilizer;

[0033] S02, preparation of mixed material: the nitrogen-containing compound, phosphorus-containing compound, potassium-containing compound, trace element compound and filler are crushed and mixed with water to prepare a mixed material, and the weight percentage of the water in the mixed material is 1.0 ~2%;

[0034] S03, preparing a colored slow-release compound fertilizer: extruding the mixed material, drying, cooling, screening, and surface treatment to obtain a colored slow-rel...

Embodiment 1

[0050] The preparation method of the colored slow-release compound fertilizer of the embodiment of the present invention comprises the following steps:

[0051] S11: Use an electronic weighing scale to weigh urea (white), ammonium sulfate (white), monoammonium phosphate (white), potassium chloride (white or red), white dry powder, ingredients (trace elements + slow release agent + clay), The formula is: 22-9-10 (that is, 22% by weight of urea and ammonium sulfate, 9% by weight of monoammonium phosphate, and 10% by weight of potassium chloride); specifically, the weight ratio of raw materials The ratio is: 37 parts of urea, 15 parts of ammonium sulfate, 19 parts of monoammonium phosphate, 17 parts of potassium chloride, 5 parts of white dry powder, 2 parts of ferrous sulfate, 1 part of ingredients (including 0.2-05 parts of trace elements, 0.5-0.8 part slow-release agent, 0-0.5 part clay).

[0052] S12: Mix the components of the raw materials obtained in step S11 and crush the...

Embodiment 2

[0056] The preparation method of the colored slow-release compound fertilizer of the embodiment of the present invention comprises the following steps:

[0057] S21: Use an electronic weighing scale to weigh urea (white), ammonium sulfate (white), monoammonium phosphate (white), potassium chloride (white and red), white dry powder, ingredients (trace elements + slow release agent + clay), The formula is: 22-9-10 (that is, 22% by weight of urea and ammonium sulfate, 9% by weight of monoammonium phosphate, and 10% by weight of potassium chloride); specifically, the weight ratio of raw materials The ratio is: 32 parts of urea, 26 parts of ammonium sulfate, 19 parts of monoammonium phosphate, 9 parts of potassium chloride (white), 8 parts of potassium chloride (red), 3 parts of white dry powder, 2 parts of ferrous sulfate, and 1 part of ingredients (Contains 0.2-0.5 parts of trace elements, 0.5-0.8 parts of slow-release agent, 0-0.5 parts of clay).

[0058] S22: Mix the component...

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Abstract

The invention is suitable for the field of agricultural chemical fertilizers and provides a colorful slowly-releasing compound fertilizer and a preparation method thereof. The colorful slowly-releasing compound fertilizer includes a nitrogen-containing compound, a phosphorous-containing compound, a potassium-containing compound, a slowly-releasing agent, a microelement compound and a filling material. In the colorful slowly-releasing compound fertilizer, the slowly-releasing agent is used as an additive, so that the releasing rate of nutrients in the compound fertilizer can be slowed down, thereby prolonging a releasing time. The slowly-releasing compound fertilizer can reduce fertilizing times and fertilizing amount and can reduce planting cost. The phosphorous-potassium granular compound fertilizer is manufactured through an extrusion technology. The compound fertilizer is simple in production technology, is increased in yield rate, is less in labor consumption, is low in energy consumption and can protect environment.

Description

technical field [0001] The invention belongs to the technical field of fertilizers, in particular to a colored slow-release compound fertilizer and a preparation method thereof. Background technique [0002] At present, the production of compound fertilizers mostly uses basic fertilizers containing nitrogen, phosphorus, and potassium, and is granulated by conventional drum granulators, disc granulators, high towers, etc., and then sent to drum dryers for drying. After the material is cooled and sieved, the finished product is obtained. However, the existing preparation method cannot normally produce compound fertilizers with a particle size above 4.5mm, the yield is low, the obtained product is very easy to float and dissolve, and the fertilizer effect time is short, so the fertilization effect on underwater crops (such as lotus root) is poor; and The color of the product can only be monochromatic, and the color is relatively monotonous. The finished product rate of the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
CPCC05B7/00C05G3/00C05B17/00C05C1/00C05C3/00C05C5/02C05C9/00C05C9/02C05D1/02C05D9/02
Inventor 黄德明曾国才李平
Owner SHENZHEN BATIAN ECOTYPIC ENG