Water-soluble polysaccharide environment-friendly anti-caking agent for composite fertilizer and application thereof in composite fertilizer

Abstract

The invention discloses a water-soluble polysaccharide environment-friendly anti-caking agent for a composite fertilizer and application of the anti-caking agent in the composite fertilizer, and belongs to the field of chemical fertilizer additives. The anti-caking agent disclosed by the invention mainly comprises a polysaccharide substance and a surfactant, wherein the water0soluble polysaccharide environment-friendly anti-caking agent for the composite fertilizer is dissolved with water through heating so as to obtain a diluted solution of the anti-caking agent, the diluted solution of the anti-caking agent is then sprayed to the composite fertilizer, and the composite fertilizer is dried to obtain the anti-caking composite fertilizer. The anti-caking agent disclosed by the invention is abundant in sources of raw materials, and environment-friendly, can be easily biodegraded, can form a film layer on the surfaces of the particles of the composite fertilizer after being sprayed to the composite fertilizer to block the generation of a salt bridge, and can be used for lastingly and effectively inhibiting the caking of the composite fertilizer, overcoming the defects of high caking possibility, conglutination and dusting and the like of the composite fertilizer, eliminating the pollution brought to a farmland water system by the oil-powder type composite anti-caking agent for the composite fertilizer, facilitating the absorption by crops, and ensuring the safety of a soil ecological environment.

Description

technical field [0001] The invention belongs to the field of chemical fertilizer additives. Background technique [0002] Compound fertilizer occupies a very important position in the fertilizer industry because it integrates multiple nutrients. However, due to temperature fluctuations in the process of transportation and storage, compound fertilizers exchange water with the environment, dissolve and crystallize salt, and produce salt bridges. Glue fertilizer granules together. In addition, fertilizer granules are squeezed during stacking, which leads to plastic deformation and promotes the agglomeration of fertilizers. The caking problem not only brings troubles to the storage and transportation of chemical fertilizer production enterprises, but also causes great inconvenience to users. The fertilizer loses fluidity and forms hard lumps. This kind of caking is the most unfavorable to mechanical fertilization. . In order to avoid the caking of compound fertilizers, the mo...

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Problems solved by technology

[0003] At present, the anti-caking agents used by domestic compound fertilizer manufacturers are mainly oil-powder mixed anti-caking agents, in which the oil materials are mineral oil, wax substances, etc., and the powder materials are kaolin, silica, talcum powder, etc. The principle It prevents the agglomeration of compound fertilizer through mechanical isolation. Although this anti-caking agent has an anti-caking effect, it is not conducive to the sustainable development of agriculture due to the environmental problems of the raw materials used.

For example, powder is easy to generate dust, and mechanical oil and wax are difficult to degrade, which will cause serious damage to crop sprouts and roots after application; oil stains can be seen on the water surface after fertilization in paddy fields, which not only damages rice seedlings, but also pollutes water quality and the environment.

Recently, degradable animal and vegetable oils are also used to replace engine oil, but animal oils have an unpleasant smell and affect the environment, while using vegetable oils requires high raw material costs, and waste water, waste gas, and waste residues are likely to be generated during processing.

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