A kind of anti-caking fertilizer and preparation method thereof

Abstract

The invention discloses an anti-blocking fertilizer and a preparation method therefor. Raw materials of the fertilizer comprises the components in percentage by weight: 93-99% of a fertilizer core and 0.5-4% of a synergist, wherein the fertilizer core is a composite fertilizer or a compound fertilizer; the synergist is selected from one or more of zinc oxide, magnesium oxide, manganese oxide and ferric oxide; the synergist is wrapped on the surface of the fertilizer core, and material isolation is formed between fertilizer particles and fertilizer particles. The anti-blocking fertilizer disclosed by the invention is not blocked in granulating and storing processes. The fertilizer efficiency of the fertilizer during use is long, and moreover, the fertilizer can provide various elements for crops at the same time and is low in cost.

Description

technical field [0001] The invention belongs to the technical field of fertilizers related to plant nutrition, and in particular relates to an anti-caking fertilizer and a preparation method thereof. Background technique [0002] Since the 1970s, a series of compound fertilizer wrapping technologies have appeared, mainly including powdering and coating. The earliest is to spray lubricating materials such as talcum powder on the surface of compound fertilizer. The former Soviet Union Вовкотруб used highly dispersed silica and ammonium carbonate mixed powder to coat the particles, but the effect was not good; French Navascus invented the use of oil and wax melts to treat compound fertilizers, but the thermoplastic range of the material is small, so that The product has low particle strength and is easy to pulverize. Yanji Iwasaki of Japan used aldehyde compounds as anti-caking agents, but the volatilization of low-boiling aldehydes and engine oil diluents produced irritating...

AI Technical Summary

Problems solved by technology

The former Soviet Union Вовкотруб used highly dispersed silica and ammonium carbonate mixed powder to coat the particles, but the effect was not good; French Navascus invented the use of oil and wax melts to treat compound fertilizers, but the thermoplastic range of the material is small, so that The product has low particle strength and is easy to pulverize

Yanji Iwasaki of Japan used aldehyde compounds as anti-caking agents, but the volatilization of low-boiling aldehydes and engine oil diluents produced irritating odors and were toxic; in the late 1980s, German Blouin and Gullett studied the treatment of calcium lignosulfonate and similar substances. Fertilizer improves its anti-caking and anti-crushing properties, which overcomes the disadvantages of using aldehydes, but makes the fertilizer brown, which is difficult for farmers to accept

Alnas, Finland dissolves cationic amines dissolved in ether and anionic carboxylic acids dissolved in methanol to form aminodicarboxylates, and dissolves them in mineral oil to wrap compound fertilizers. Although the anti-caking effect is good, the cost is high , the production and use are inconvenient, and it is unsafe to use a large amount of solvents, so it is difficult for practical application; Japanese Kurata Atsuzo directly uses amide compounds as the main component of the anti-caking agent, but the price is expensive

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