Marking compound for fertilizer, and method and device for controlled-release marking of granulated fertilizer

Abstract

The invention relates to a marking compound for a fertilizer, and a method and a device for controlled-release marking of a granulated fertilizer. The marking compound for the fertilizer comprises the following components in parts by weight: 3-5 parts of dye, 12-20 parts of film-forming agent, 1-3 parts of dispersing agent, 130-160 parts of water and 0-2 parts of emulsifier. The method for controlled-release marking of the granulated fertilizer comprises that the marking compound is prepared according to a proportion; the granulated fertilizer to be marked is quantitatively fed and conveyed into a drum; the marking compound is sprayed to the surface of the granulated fertilizer, and the usage of the marking compound is 0.02-0.3wt% of the weight of the granulated fertilizer; and the marking compound is uniformly distributed and dispersed on the surface of the granulated fertilizer to obtain a marked controlled-release fertilizer. The invention further provides the device for controlled-release marking of the granulated fertilizer. The fertilizer which is subjected to the marking treatment of the method can reduce the release speed of available nutrients, and effectively prevents the granulated fertilizer from blocking; and the marked fertilizer has a smooth appearance, bright color, order granules and improved product quality.

Description

technical field

[0001] The invention relates to a coloring agent for fertilizer and a method and device for sustained-release coloring of granular fertilizer, belonging to the technical field of fertilizer production. Background technique

[0002] Agriculture is the basic industry of our country. To achieve the sustainable and stable development of agriculture, chemical fertilizers are indispensable. Therefore, the chemical fertilizer industry is listed as the first category "has a significant impact on the development of the national economy, and provides national basic industries, pillar industries and national defense construction. Guaranteed industry" is an important factor affecting the growth of grain production. my country feeds 23% of the world's population with 9% of the world's arable land, and has made a major contribution to the global eradication of hunger and poverty. The contribution of chemical fertilizers is unquestionable. According to statistics from the C...

Examples

Embodiment 1

[0033] Granular fertilizer slow-release coloring device, the structure is as follows figure 1 , including: a quantitative feeder 1, a solution preparation device 2, a flow meter 3, a drum 4 and a finished product bin 5, the quantitative feeder 1 is connected to the feed port of the drum 4, and the solution preparation device 2 passes through The liquid flowmeter 3 is connected into the drum 4 , and the discharge port of the drum 4 is connected to the finished product bin 5 . The solution preparation device 2 is a pressure tank plus an air compressor, or a storage tank plus a liquid pump; the quantitative feeder 1 includes a belt scale and a conveyor belt. All components involved in the embodiments are conventional techniques in the art.

Embodiment 2

[0035] A kind of coloring agent for fertilizer, the composition of parts by weight is as follows:

[0036] 4 parts of brown dye, 15 parts of 1wt% polyvinyl alcohol solution, 2 parts of sodium water glass with a Baume degree of 25%, and 150 parts of water. The brown dye is food grade chocolate brown. Mix 1wt% polyvinyl alcohol solution, sodium water glass and water, then add dye and stir evenly.

Embodiment 3

[0038] A kind of coloring agent for fertilizer, the composition of parts by weight is as follows:

[0039] 5 parts of green dye, 20 parts of 0.8wt% polyvinyl alcohol solution, 3 parts of sodium water glass with a Baume degree of 20%, and 160 parts of water. The green dye is food-grade fruit green. Mix 1wt% polyvinyl alcohol solution, sodium water glass and water, then add dye and stir evenly.

technical field

[0001] The invention relates to a coloring agent for fertilizer and a method and device for sustained-release coloring of granular fertilizer, belonging to the technical field of fertilizer production. Background technique

[0002] Agriculture is the basic industry of our country. To achieve the sustainable and stable development of agriculture, chemical fertilizers are indispensable. Therefore, the chemical fertilizer industry is listed as the first category "has a significant impact on the development of the national economy, and provides national basic industries, pillar industries and national defense construction. Guaranteed industry" is an important factor affecting the growth of grain production. my country feeds 23% of the world's population with 9% of the world's arable land, and has made a major contribution to the global eradication of hunger and poverty. The contribution of chemical fertilizers is unquestionable. According to statistics from the C...

Examples

Embodiment 1

[0033] Granular fertilizer slow-release coloring device, the structure is as follows figure 1 , including: a quantitative feeder 1, a solution preparation device 2, a flow meter 3, a drum 4 and a finished product bin 5, the quantitative feeder 1 is connected to the feed port of the drum 4, and the solution preparation device 2 passes through The liquid flowmeter 3 is connected into the drum 4 , and the discharge port of the drum 4 is connected to the finished product bin 5 . The solution preparation device 2 is a pressure tank plus an air compressor, or a storage tank plus a liquid pump; the quantitative feeder 1 includes a belt scale and a conveyor belt. All components involved in the embodiments are conventional techniques in the art.

Embodiment 2

[0035] A kind of coloring agent for fertilizer, the composition of parts by weight is as follows:

[0036] 4 parts of brown dye, 15 parts of 1wt% polyvinyl alcohol solution, 2 parts of sodium water glass with a Baume degree of 25%, and 150 parts of water. The brown dye is food grade chocolate brown. Mix 1wt% polyvinyl alcohol solution, sodium water glass and water, then add dye and stir evenly.

Embodiment 3

[0038] A kind of coloring agent for fertilizer, the composition of parts by weight is as follows:

[0039] 5 parts of green dye, 20 parts of 0.8wt% polyvinyl alcohol solution, 3 parts of sodium water glass with a Baume degree of 20%, and 160 parts of water. The green dye is food-grade fruit green. Mix 1wt% polyvinyl alcohol solution, sodium water glass and water, then add dye and stir evenly.

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