Loss control nitrogenous fertilizer and producing method thereof

A production method and technology of nitrogen fertilizer, applied in the direction of phosphate fertilizer, fertilization device, fertilizer mixture, etc., can solve the problems of high price, inseparable, loss of surface source, etc., achieve high production efficiency, small footprint, and improve utilization rate Effect

Inactive Publication Date: 2008-07-02
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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AI-Extracted Technical Summary

Problems solved by technology

[0002] As a large agricultural country, the actual problems that our country is facing are: on the one hand, the rapid development of agricultural production is inseparable from the investment in agriculture. At present, it is mainly chemical input, which is manifested in the substantial increase in the amount of chemical fertilizers, pesticides, and herbicides; On the one hand, with the current fertilization pattern and habits, high fertilization means high loss of fertilizer, causing more serious environmental problems
The production process of slow...
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Abstract

The invention relates to a loss-controlled nitrogen fertilizer and a production method thereof which is characterized in that particles are contained in loss-controlled agent and nitrogen fertilizer; the exterior face of the particles are sprayed with oil and the weight proportion of various ingredients is 6-15 of the loss-controlled agent, 90-110 of the nitrogen and 5-10 of the oil, wherein, the weight proportion of the loss-controlled agent is 100-300 of attapulgite, 1-5 of polyacrylamide, 1-10 of monoammonium. The production method is that the loss-controlled agent is added to crushed urea powder according to the proportion of 6-15 percent for evenly blending; the obtained mixture is then treated with pelletizing on a double-roller compaction granulator; the particle diameter is controlled at 3-10 mm and the pelletized particles are then conveyed to an oiling drum of a compound fertilizer for spraying and oiling. The invention can reduce the loss of nitrogen elements by 20-60 percent, improve the utilization efficiency of the nitrogen, reduction the pollution of nitrogen to water and air and has the function of soil improvement.

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Technology Topic

Examples

  • Experimental program(2)

Example

[0030] example 1
[0031] Attapulgite: polyacrylamide: monoammonium phosphate (100-300): (1-5): (2-10), uniformly blended into a nitrogen fertilizer loss control agent, added in a proportion of 6-15% Stir and mix evenly in the pulverized urea powder (30-60 mesh), then granulate on a double-roll extrusion granulator, select an appropriate mold to control the particle size at 3-10mm, and send the granulated granules into The compound fertilizer oiling drum is sprayed and oiled, wherein the oil is a mixture of amine flakes and mechanical oil in a mass ratio of 1:3, liquefied at 85-90 degrees Celsius, and the oiling amount (quality) is controlled to be 5%-10% of the fertilizer.

Example

[0032] Example 2
[0033] Attapulgite: polyacrylamide: monoammonium phosphate (100-200): (1-3): (1-6), uniformly blended into a nitrogen fertilizer loss control agent, added in a proportion of 6-15% Add ammonium chloride powder (40-80 mesh) and mix well, then granulate on a double-roll extrusion granulator, select an appropriate mold to control the particle size at 3-10mm, and send the granulated pellets into the compound The fertilizer oiling drum is used for spray oiling, wherein the oil is a mixture of amine flakes and mechanical oil in a mass ratio of 1:3, liquefied at 85-90 degrees Celsius, and the oiling amount (mass) is controlled to be 5%-10% of that of chemical fertilizers. %.
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Description & Claims & Application Information

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