A kind of powdery potassium nitrate anticaking agent and preparation method thereof

Abstract

The invention discloses a powdered potassium nitrate anti-blocking agent and a preparation method thereof. The anti-blocking agent is prepared from the following components: 20 to 60 percent of crystal control agent, 10 to 30 percent of lubricant, 10 to 20 percent of scattering agent, 10 to 30 percent of water repellent agent, and 1 to 5 percent of flame retardant. The potassium nitrate anti-blocking agent is added after the crystallization and before the drying of the potassium nitrate, so that not only are the problems that the production efficiency is low due to the addition of the potassium nitrate anti-blocking agent before the crystallization, the potassium nitrate is complicated in components, foamed and abnormally crystallized and the like solved, but also compared with the liquid, the phenomenon such as the long drying time caused by the excessive water and the yellowing of the appearance of the potassium nitrate can be avoided, and the quality is better; and moreover, the application cost and the processing cost are relatively low, the anti-blocking performance is excellent, and the powdered potassium nitrate anti-blocking agent is suitable for the industrialized application.

Description

technical field [0001] The invention belongs to the field of anti-caking of chemical fertilizers, and in particular relates to a potassium nitrate anti-caking agent and a preparation and use method thereof. Background technique [0002] Potassium nitrate belongs to binary compound fertilizer. Potassium nitrate is a chlorine-free potassium and nitrogen compound fertilizer. The total content of plant nutrients potassium and nitrogen can reach about 50%, and it has good physical and chemical properties. Conventional industrial crystalline potassium nitrate, no matter in bags or in bulk, will show a strong tendency to agglomerate due to the continuous moisture absorption of potassium nitrate crystals from the humid environment during storage. Due to a certain pressure during the stacking process, the original loose crystal scaling changes, sticks together, and finally forms a hard block, which brings safety hazards to storage, transportation, and use. The best solution The way ...

AI Technical Summary

Problems solved by technology

However, there are still problems such as polluted soil, oily anti-caking agent easily penetrates into the inner layer of particles to reduce anti-caking effect, and high cost.