Colored powdery compound fertilizer anti-caking agent prepared from inorganic pigment and application thereof

Abstract

The invention relates to a colored powdery compound fertilizer anti-caking agent prepared from an inorganic pigment and application thereof. The agent comprises the following ingredients in percentage by mass: 1-3% of iron oxide red, iron oxide yellow, iron oxide blue, iron oxide green, iron oxide purple, iron oxide brown or iron oxide black and 99-97% of modified talcum powder, and is prepared by uniformly mixing the ingredients by adopting a powder mill. The agent is applied to compound fertilizer coating, and 2.5-3.5 kilograms of the agent are used in each ton of a compound fertilizer, so that a corresponding color of red, yellow, blue, green, purple, brown or black is shown in the appearance of the compound fertilizer. The agent has the advantages that the agent with the corresponding color of red, yellow, blue, green, purple, brown or black can be provided for compound fertilizers with different appearance colors, so that the inside and outside colors of each compound fertilizer are consistent, color difference and materials with inconsistent colors are avoided, and the color is stable and uniform; meanwhile, light resistance and heat resistance are achieved, and the agent is colourfast and anti-fade, and can serve as a fertilizer anti-counterfeiting mark; the agent is simple in preparation method, relatively low in using cost and high in anti-caking property; when the agent is applied to compound fertilizer coating, the fertilizer loosening rate reaches 90% or above; the agent can be degraded biologically, and thus is beneficial to environmental protection.

Description

technical field [0001] The invention relates to the technical field of powdery anti-caking agents for compound fertilizers, in particular to the preparation and application of colored powdery anti-caking agents for compound fertilizers with inorganic pigments. Background technique [0002] With the continuous deepening of people's understanding of compound fertilizers, compound fertilizers have become an important fertilizer in agricultural production. However, the problem of compound fertilizer caking has always been concerned by the chemical fertilizer industry, and it is also one of the important factors affecting the quality of fertilizers. Agglomeration not only brings troubles to the storage and transportation of compound fertilizer manufacturers, but more importantly, it causes great inconvenience to users. [0003] Now, most of the compound fertilizer enterprises, in order to prevent moisture absorption, agglomeration, pulverization and other problems in the producti...

AI Technical Summary

Problems solved by technology

In addition, some enterprises will also add some pigments in the process of producing compound fertilizers to improve the appearance of compound fertilizers, as a mark to distinguish different types of compound fertilizers, so that the compound fertilizers appear red, yellow, blue, green, purple, brown or black In this way, after coating a layer of oily anti-caking agent on the surface of the fertilizer, and then using 2.5-6.0 kg / ton of white or light gray powdery anti-caking agent for compound fertilizer, the color of the surface of the compound fertilizer will be weakened, and the inside and outside of the compound fertilizer will be damaged. Chromatic aberration, surface whitening, lack of color, dull color, etc., therefore, it is imperative to develop powdery compound fertilizer anti-caking agents of different colors, which is also a key development topic at present