Preparation method of naturally-degradable compound fertilizer anti-blocking agent and application thereof

Abstract

The invention discloses a preparation method of a naturally-degradable compound fertilizer anti-blocking agent and an application thereof. The naturally-degradable compound fertilizer anti-blocking agent comprises the following components in percentage by mass: 10-20 percent of fatty amine or salt thereof, 20-25 percent of stearic acid, 15-20 percent of oleic acid, 5-15 percent of refined glycerin and 20-50 percent of waste edible oil and fat, and the sum of all the components is 100 percent according to the percentage. The preparation method comprises the following steps of: mixing all the components according to the proportion, heating to be 70 DEG C -85 DEG C, and stirring and reacting for 15 minutes-30 minutes. The used amount of the compound fertilizer anti-blocking agent is 05-2.0kg/t (compound fertilizer), and a granulation mode of a high air-cooling crystallization tower of an all-molten compound fertilizer is adopted to mix the naturally-degradable compound fertilizer anti-blocking agent with the compound fertilizer. In the preparation method and the application thereof, the processing is simple, the use cost is low, the anti-blocking performance is good, the purely natural and environmentally-friendly performances are achieved, the absorption of crops is convenient, the fertilizer effect is enhanced, and the soil is protected.

Description

technical field [0001] The invention relates to the technical field of anti-caking of compound fertilizers, in particular to a preparation method and application of a natural degradable anti-caking agent for compound fertilizers. Background technique [0002] The caking problem of compound fertilizers has been paid more and more attention by manufacturers. Most fertilizer manufacturers have explored and discussed the mechanism and causes of granular fertilizer caking, and have adopted different anti-caking measures to reduce fertilizer caking. block to ensure the looseness of the granular fertilizer. [0003] There are three types of existing anti-caking agents: powder type, water-solvent type and oil-soluble type: 1. The powder type anti-caking agent uses inert powder to block the formation of crystal bridges between fertilizer particles, but it needs to be sprayed into oily substances at the same time during use. Adheres to inert powders. Although this method has an anti...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it brings in moisture, which is the direct cause of fertilizer caking

3. The oil-solvent anti-caking agent avoids the shortcomings of the above two methods, and has the advantages of convenient use and good effect. However, the traditional method needs to add mineral oil (such as engine oil) as a solvent, and the amount of mineral oil is large. For 4-5 times of anti-caking agent, the amount of mineral oil per ton of compound fertilizer reaches 2-3kg. These mineral oils enter the soil with fertilizer and are difficult to degrade, causing a certain degree of pollution to the soil and surrounding environment