Big rounded-grain nitrogen potassium chlorine based binary compound fertilizer and preparation method

Abstract

The invention relates to a big rounded-grain nitrogen potassium chlorine based binary compound fertilizer and a preparation method of the compound fertilizer. Main raw materials of the nitrogen potassium chlorine based binary compound fertilizer are powdery ammonium chloride and powdery potassium chloride, a disk or a drum serve as prilling equipment, a prilling assistant is used for forming the big rounded-grain binary compound fertilizer. The big rounded-grain nitrogen potassium chlorine based binary compound fertilizer is produced, as the prilling and the production are difficult, no similar raw material-shaped nitrogen potassium fertilizer exist in the market at present, and in addition, the fertilizer can meet special requirements for nitrogen and potassium nutrient of region soil containing phosphorus. Compared with an existing manufacture process of the compound fertilizer, the compound fertilizer has the advantages of (1) being low in fertilizer production, (2) being flexible in fertilizer formula, capable of arbitrarily adjusting proportion of the ammonium chloride and the potassium chloride and capable of effectively prilling under effects of the prilling assistant; (3) enabling prilling fertilizers to be high in particle strength and enabling average smashing resisting pressure to be 20-40N; (4) having a wide market; and (5) promoting an additional value of the ammonium chloride and having big profits.

Description

technical field [0001] The present invention relates to a large granular nitrogen potassium chloride base binary compound fertilizer and its preparation method. The main raw materials of the nitrogen potassium chloride base binary compound fertilizer are powdery ammonium chloride and powdery potassium chloride. Drum granulation equipment, using granulation aids to make large round binary compound fertilizers. It fills the gap of this type of fertilizer in the current market and meets the special needs of nitrogen and potassium nutrients in the soil of phosphorus-containing regions. Background technique [0002] At present, there are many kinds of compound fertilizers on the market, such as diammonium phosphate and monoammonium phosphate as binary nitrogen and phosphorus fertilizers, and various chlorine-based, nitro-based, urea-based and sulfur-based NPK ternary compound fertilizers. However, there is no binary fertilizer with nitrogen and potassium nutrients. Potassium chl...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to make up for the blank of this type of fertilizer in the current market, meet the special needs of nitrogen and potassium nutrients in the phosphorus-containing regional soil, and overcome the direct application of powdery fertilizer due to the use of powdery ammonium chloride and potassium chloride. Fertilization is inconvenient, granular fertilizers are prone to dust when loading and unloading, and are easy to agglomerate when stored for a long time, and are severely compacted, poor fluidity, difficult to spread during fertilization, and mobile fertilization cannot be realized. At the same time, powdered ammonium chloride and potassi