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Slow controlled release diatomite fertilizer

A technology of controlled-release fertilizer and diatomaceous earth, which is applied in fertilizer mixture, ammonium orthophosphate fertilizer, alkaline orthophosphate fertilizer and other directions, can solve the problem of little research on mechanism, and achieve the effect of stable chemical properties and strong adsorption.

Inactive Publication Date: 2009-09-16
吉林省巨森肥业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the study of slow / controlled release fertilizers has attracted great attention from Chinese scientific researchers and related research units, but the carrier and auxiliary materials are mostly chemical products such as resins, and the use of diatomaceous earth as the carrier of controlled release fertilizers There are very few studies, and even less mechanistic studies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Put urea: diammonium phosphate: potassium chloride: diatomaceous earth into the pulverizer according to the ratio of 16:12:10:8 for pulverization, and then pass through an 80-mesh sieve, and then enter the disc at a speed of 50 rpm , the temperature is 70°C, and the granulation drum is granulated in a granulator with an elevation angle of 50°. During the granulation process, 50 ml of water is slowly and evenly added. After the granulation is completed, the coating material polyvinyl alcohol is sprayed with a high-pressure spray gun. Spray evenly on the rotating fertilizer granules. After coating, pour the sealant into the drum at a temperature of 70°C and melt it. Then pour the coated fertilizer into the drum, and press 1:1 with rosin and paraffin. 2 Make a sealant to seal. The particles are required to be 3mm<particle diameter<5mm and sieved, and sealant is added after coating by spraying film forming method. Unqualified particles re-enter the disc granulator for drum...

Embodiment 2

[0010] Put urea: diammonium phosphate: potassium chloride: diatomaceous earth into the pulverizer according to the ratio of 18:15:13:10 for pulverization, and then pass through an 80-mesh sieve, and then enter the disc at a speed of 50 rpm , with a temperature of 75°C and a granulator with an elevation angle of 55° for granulation drum granulation. During the granulation process, 70 ml of water is slowly and evenly added. Spray evenly on the rotating fertilizer particles. After coating, pour the sealant into the drum at a temperature of 75°C and melt it. Then pour the coated fertilizer into the drum and press 1: 1 with rosin and paraffin. 2 Make a sealant to seal. The particles are required to be 3mm<particle diameter<5mm and sieved, and sealant is added after coating by spraying film forming method. Unqualified particles re-enter the disc granulator for drum granulation.

Embodiment 3

[0012] Put urea: diammonium phosphate: potassium chloride: diatomaceous earth into the pulverizer according to the ratio of 20:17:15:12 for pulverization, and then pass through an 80-mesh sieve, and then enter the disc at a speed of 50 rpm , the temperature is 80°C, and the granulation drum is granulated in the granulator with an elevation angle of 60°. During the granulation process, 100 ml of water is slowly and evenly added. After the granulation is completed, the coating material polyvinyl alcohol is sprayed with a high-pressure spray gun. Spray evenly on the rotating fertilizer particles. After coating, pour the sealant into the drum at a temperature of 80°C and melt it. Then pour the coated fertilizer into the drum and press 1: 2 Make a sealant to seal. The particle requirement is 3mm

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PUM

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Abstract

The invention relates to a slow controlled release diatomite fertilizer which is characterized in that 16 to 20 portions of urea, 12 to 17 portions of diammonium phosphate, 10 to 15 portions of potassium chloride and 8 to 12 portions of diatomite are put in a pulverizer to be crushed and sieved by a 80-mesh sieve and then are put in a granulator to be granulated by a rotary drum; 50 to 100ml water is added slowly and uniformly to be used as coupling agent during the granulating process; after the granulation, 100 to 120ml coating material of polyvinyl alcohol is sprayed to rotating fertilizer particles by a high-pressure spray gun uniformly in small amount; after coating, rosin and olefin are poured into the rotary drum based on the proportion of 1 to 2 to be melted and made into sealant; the temperature is kept between 70 DEG C to 80 DEG C; and finally, the coated fertilizer is poured into the rotary drum to be sealed. The invention can separate the soil from the fertilizer, avoids the direct contact of the soil and the fertilizer and controls the release of nutrient; the slow controlled release diatomite fertilizer has the functions of preserving moisture and fertility, prolonging the fertilizer effect by slow release and improving the soil; and the slow controlled release diatomite fertilizer causes no pollution to the soil.

Description

Technical field: [0001] The invention relates to a diatomite slow-release and controlled-release fertilizer, which is a new type of fertilizer. Background technique: [0002] Ordinary fertilizers will cause losses due to volatilization and leaching, and cause loss of human and financial resources. Because ordinary fertilizers, especially urea, need to be topdressed, the low utilization rate of fertilizers not only causes a huge waste of resources, but also causes serious environmental pollution. Surface eutrophication, nitrate nitrogen content in groundwater and vegetables seriously exceeded the standard in the region. According to research, about 1 / 3 of the chemical nitrogen fertilizer applied to the soil enters the atmosphere, of which the N 2 O destroys the ozone layer and produces a greenhouse effect; about 1 / 3 of the fertilizer enters the hydrosphere through soil leaching, resulting in eutrophication of water resources. Causes N0 in food (especially vegetables) in mos...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05C9/00C05B7/00C05G3/80
Inventor 王志山郭洪智杨振明宋波闫飞
Owner 吉林省巨森肥业有限公司
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