Particle calcium cyanamide compound fertilizer and technique for processing the same

A technology of calcium cyanamide and compound fertilizer, which is applied in the direction of cyanamide fertilizer, nitrogen fertilizer, organic fertilizer, etc., can solve the problems of affecting fertilizer efficiency and reducing fertilizer efficiency, achieve long-lasting fertilizer effect and solve the effect of harming human health

Active Publication Date: 2009-05-27
宁夏大荣化工冶金有限公司
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Problems solved by technology

The disadvantage of the above scheme is that when calcium cyanamide decomposes with water, it will form a water-insoluble shell, which affec

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] First crush 40kg of cow dung to particles smaller than 5mm square, then mix it with 50kg of calcium cyanamide and 10kg of urea, put it into a dry granulator, squeeze it into particles with a diameter of 2mm, and pack it after cooling. The finished granular calcium cyanamide compound fertilizer.

Embodiment 2-13

[0011] Example Calcium cyanamide (kg) Add ingredients Binder 2 50 40kg sheep dung 10kg urea 3 50 40kg wheat straw 10kg ammonium nitrate 4 50 40kg rice straw 10kg calcium nitrate 5 50 40kg weathered coal 10kg urea 6 50 40kg humic acid 10kg ammonium nitrate 7 50 40kg magnesium humate 10kg calcium nitrate 8 80 10kg sheep dung 10kg urea 9 80 10kg wheat straw 10kg ammonium nitrate 10 80 10kg rice straw 10kg calcium nitrate 11 10 80kg weathered coal 10kg urea 12 10 70kg humic acid 20kg ammonium nitrate 13 10 60kg magnesium humate 30kg calcium nitrate

[0012] In the above embodiments, without changing the amount of calcium cyanamide and the binder, the proportion of the added ingredients is changed, that is, one or more of animal manure, plant straw, weathered coal, humic acid, and magnesium humate are used. It can be made into granular calcium cyanamide compoun...

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Abstract

The invention relates to a fertilizer, in particular to a granular calcium cyanamide compound fertilizer and a technique for processing the same. The granular calcium cyanamide compound fertilizer comprises the following components according to the total weight: 10 to 80 percent of calcium cyanamide, 10 to 80 percent of adding components, and 5 to 30 percent of caking agent, wherein the adding components comprise one or more than one of animal wastes, plant straws, decomposed coal, humic acid and humic acid magnesium; and the caking agent is one or more than one of urea, ammonium nitrate and calcium nitrate. The processing technique comprises the steps of crushing, stirring and granulating. The processing technique uses the characteristics of easy decomposition of the adding components in water and difficult decomposition of the caking agent in air, solves the problems that the prior calcium cyanamide is easy to decompose in the air and is not easy to dissolve in the water, effectively exerts the properties of long lasting manurial effect of the calcium cyanamide in soil and slow absorption by crops, has the characteristics of certain weeding and sterilizing effects, and can prevent causing harm to health of human body during use at the same time after the fertilizer is manufactured into granules.

Description

Technical field [0001] The invention relates to a fertilizer, in particular a granular calcium cyanamide compound fertilizer and its processing technology. Background technique [0002] As a kind of fertilizer, calcium cyanamide has the advantages of slow-release and long-lasting effect. However, due to improper protection in the process of using it alone, it will cause health hazards, so people have always wanted to solve this problem. For example, the Chinese Intellectual Property Office published on April 2, 2003 named "Stable Synergistic Slow-Release Calcium Cyanamide Composition", publication number: CN1407957A invention patent, the main components of which are calcium cyanamide and urea. Different combinations of calcium cyanamide and urea are granulated and made into granular slow fertilization. The disadvantage of the above scheme is that when calcium cyanamide is decomposed in water, it will form a water-insoluble shell, which affects its fertilizer efficiency. At the sa...

Claims

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Application Information

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IPC IPC(8): C05G1/00C05F11/02C05F3/00C05C7/00
CPCY02A40/20
Inventor 朱振林赵黎明
Owner 宁夏大荣化工冶金有限公司
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