Method for coating granular fertilizer

A granular fertilizer and coating technology, applied in the direction of organic fertilizer, inorganic fertilizer, fertilizer mixture, etc., can solve the problems of different specific gravity and fineness, unstable product quality, and affect the use effect, so as to achieve uniform and stable properties and improve product quality Stability, effect of increasing fluidity

Inactive Publication Date: 2018-09-14
沃达农业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When these trace materials are mixed with other powder fertilizers, it is difficult to mix them evenly due to the difference in specific gravity and fineness.
At the same time, the waste of materials to be wrapped by this method is large, and there will be situations where the adhesion is not firm, and the smoke and dust in the production process will be extremely large.
In the subsequent bagging and transportation, trace materials will fall off the surface of fertili

Method used

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  • Method for coating granular fertilizer
  • Method for coating granular fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as figure 1 As shown, a spraying device includes: a coating machine 1, an auger 2, a nozzle 3, a screw pump 4, a hopper 5, an air compressor 6, a silo 7, a feeding belt 8 and a powder spreader 9.

[0046] The auger 2 is arranged in the coating machine 1 for transporting granular fertilizers.

[0047] Nozzle 3 is arranged on the top of auger 2, and is used for spraying the coating agent to the granular fertilizer on the auger 2; as figure 2 As shown, the diameter of the outlet at the lower end of the nozzle 3 is 0.5-1 cm, and the outlet at the lower end is in the shape of a "V".

[0048] The spray head 3 is connected with the screw pump 4, and the screw pump 4 is used to transport the coating agent in the hopper 5 to the spray head 3.

[0049] The spray head 3 is connected with the air compressor 6, and the air compressor 6 is used to provide pressurized gas to the spray head 3 to spray the coating agent in the spray head 3.

[0050] The feeding belt 8 is arranged...

Embodiment 2

[0060] The specific operation steps are as follows:

[0061] (1) Preparation of suspension: at room temperature, weigh 3g of xanthan gum, 30g of potassium chloride, 80g of attapulgite, and 2g of sodium polyacrylate; , to obtain a suspending agent;

[0062] (2) Preparation of coating agent: add 0.5 kg of trace material to 0.8 kg of suspending agent, that is, add 0.5 kg of microbial bacterial powder, and stir evenly to obtain coating agent;

[0063] (3) The granular fertilizer is passed through the spraying device of embodiment 1 (the diameter of the discharge port at the lower end of the spray nozzle 3 is 0.5 cm), and the coating agent and talcum powder are successively wrapped on its surface. The specific steps are: pour the fertilizer granules into the silo 8, and the feeding belt 9 continuously feeds the granule fertilizer in the silo 8 into the coating machine 1 at a constant speed, and the feeding amount is 1.5 tons in 5 minutes. Pour the coating agent into the hopper 5,...

Embodiment 3

[0066] The specific operation steps are as follows:

[0067] (1) Preparation of suspending agent: at room temperature, weigh 8g of xanthan gum, 60g of potassium chloride, 200g of attapulgite, and 10g of sodium polyacrylate, mix well, add in a reaction kettle with 1800g of water, and stir for 2 hours , to obtain a suspending agent;

[0068] (2) Preparation of coating agent: add 1 kg of trace material to 2 kg of suspending agent, namely add 1 kg of microbial bacterial powder, and stir evenly to obtain coating agent;

[0069] (3) The granular fertilizer is passed through the spraying device of embodiment 1 (the diameter of the discharge port at the lower end of the spray nozzle 3 is 1 cm), and the coating agent and talcum powder are wrapped successively on its surface. The specific steps are: pour the fertilizer granules into the silo 8, and the feeding belt 9 continuously feeds the granule fertilizer in the silo 8 into the coating machine 1 at a constant speed, and the feeding ...

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Abstract

The invention discloses a method for coating granular fertilizer. The method for coating the granular fertilizer comprises the following steps of: (1) adding xanthan gum, potassium chloride, attapulgite and sodium polyacrylate into water, and performing stirring to obtain a suspending agent; (2) adding trace materials into the suspending agent, and performing even stirring to obtain a coating agent; and (3) coating the surface of the granular fertilizer with the coating agent and talc powder sequentially through a spraying device. Through the method for coating the granular fertilizer, the prepared suspending agent has uniformity and stability, and the quality stability of the coating agent product prepared by using the suspending agent can be improved, so that waste of materials is reduced; the purpose of precise spraying of the thick coating agent can be achieved by using a screw pump which cooperates with a special nozzle and an air compressor, and the spraying device can be protected effectively; through cooperative use of the coating agent and the spraying device, streamlined operation of fertilizer coating can be achieved, the quality stability can be ensured, and the yield can be increased greatly.

Description

technical field [0001] The invention belongs to the technical field of fertilizer coating, in particular to a method for coating granular fertilizers. Background technique [0002] With the development of the economy, families are getting richer, and people's requirements for the quality of agricultural products are getting higher and higher. However, in the past, people continued to apply a large amount of inorganic fertilizers to the soil in order to increase production, which caused serious damage to the aggregate structure of the soil. Soil salinization has become increasingly serious, which eventually not only leads to a decline in yield, but also deteriorates the quality of agricultural products. [0003] In response to this, people began to pay attention to microbial fertilizers and use fertilizer synergists to reduce the amount of fertilizer used. Microbial powder needs to be loaded on organic materials, so the preparation method of many microbial fertilizers is to ...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05D1/02B05B7/02B05D1/02
CPCB05B7/02B05D1/02C05D1/02C05G3/00C05G5/30C05D5/00C05D9/00C05F11/00C05F11/08
Inventor 易强段锦波许世武刘维
Owner 沃达农业科技股份有限公司
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