Water-soluble nitro-compound fertilizer anti-blocking agent as well as preparation and using method thereof

Abstract

The invention discloses a water-soluble nitro-compound fertilizer anti-blocking agent. The water-soluble nitro-compound fertilizer anti-blocking agent comprises the components in percentage by mass: 8-40 percent of sodium tripolyphosphate, 10-35 percent of lauryl sodium sulfate, 15-35 percent of sodium dodecyl benzene sulfonate and 8-30 percent of polyacrylamide. A preparation method of the water-soluble nitro-compound fertilizer anti-blocking agent comprises the following steps: grinding the formula raw materials of the anti-blocking agent to be 300 meshes to obtain anti-blocking agent powder. A using method of the water-soluble nitro-compound fertilizer anti-blocking agent comprises the steps that when used, the water-soluble nitro-compound fertilizer anti-blocking agent is fully mixed with a compound fertilizer through a coating machine, 2-8kg of water-soluble nitro-compound fertilizer anti-blocking agents are added in the compound fertilizer per ton. The water-soluble nitro-compound fertilizer anti-blocking agent is easy and convenient to operate, convenient for industrial production, less in using amount and low in cost, moreover, and the pollution to environment is avoided; in addition, the water-soluble nitro-compound fertilizer anti-blocking agent has a good anti-blocking effect, and the loose degree of the powder soluble fertilizer reaches 90 percent or more.

Description

technical field [0001] The invention relates to an anti-caking agent, in particular to an anti-caking agent for water-soluble nitro compound fertilizer. Background technique [0002] In recent years, with the vigorous promotion of high-concentration compound fertilizers and the popularization of agricultural mechanized fertilization, the demand for water-soluble fertilizers has gradually increased, and the requirements for water-soluble fertilizers have also increased. During storage, loading and unloading and transportation or under certain external conditions, compound fertilizer will gradually lose fluidity and stick to each other and form hard lumps. Compound fertilizer agglomeration not only affects the appearance and quality of the product, but also causes great inconvenience in use, especially Powdered water-soluble nitro compound fertilizers are easily crystallized fertilizers with small particle size and large specific surface area, so they have a more serious tende...

AI Technical Summary

Problems solved by technology

[0004] 1. Inert powder is the earliest anti-caking agent used. It achieves anti-caking effect by mechanically isolating and absorbing moisture on the surface of fertilizers. However, the amount of inert powder is large. For powdery compound fertilizers that are easy to agglomerate, the anti-caking effect is not good. Good, and the raw materials are inert substances, which are not suitable for anti-caking treatment of water-soluble compound fertilizers;

[0005] 2. The inorganic salt dispersant has anti-caking effect because of its water absorption, but it will greatly reduce the moisture absorption point of the compound fertilizer;

[0006] 3. Surfactant-polymer compound liquid anti-caking agent can change the crystallization habit by reducing the surface tension of the solution, but the synthesis process is complicated

[0007] At present, the anti-caking agents available in the domestic market have the following disadvantages: they are used in large amounts and are not easy to degrade; they cause pollution to the environment, and the anti-caking effect cannot meet the requirements; the processing technology is complicated and the cost is high

In summary, the existing anti-caking agents are not suitable for the anti-caking treatment of water-soluble compound fertilizers