Particle calcium cyanamide compound fertilizer and technique for processing the same

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...

AI Technical Summary

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 affects its fertilizer efficiency. At the same time, calcium cyanamide decomposes into powder in the air, which reduces its fertilizer efficiency.