A kind of circular high-strength granular potassium chloride fertilizer and its manufacturing method

Abstract

The invention discloses a round high-strength granular potassium chloride fertilizer and a manufacturing method thereof. The fertilizer comprises the following components: potassium chloride raw material, a binder, a wetting agent, and an acidity regulator. The manufacturing method includes two important components: The steps are respectively auxiliary agent preparation and potassium chloride granulation; the binder is a mixture of calcium sulfate hemihydrate and magnesium oxide, the wetting agent is ferrous sulfate FeSO4 or polyethylene glycol 200, etc., and the acidity regulator is hydrochloric acid , the manufacturing method adopts disc granulator or drum granulator for granulation, the granulation rate is ≥80%, the qualified rate product is ≥67.3%, the product particle strength is 35-45N, and the particle size is 2.5-4.75mm. The invention changes the traditional potash fertilizer manufacturing method. It has high particle strength, good fluidity of round particles, low production cost, low energy consumption, easy promotion, effectively improves the granulation rate of potassium chloride, and increases industrial production output.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to a high-strength granular potassium chloride fertilizer and a manufacturing method thereof. Background technique [0002] In my country, most of the fertilizer raw materials for agricultural consumption are still powder products. While vigorously developing the production of compound fertilizers, it is necessary to further process powder fertilizers into granular fertilizers, or become BB fertilizers, or apply them directly to improve fertilizer utilization. It will have a good market prospect, and the granular fertilizer has good physical properties, no dust during loading and unloading, no caking during long-term storage, good fluidity, easy to spread when fertilizing, and can realize the advantages of agricultural machinery sowing fertilizer and reducing losses. It plays a slow-release role and improves the utilization rate of fertilizers. There is no doubt that ...

AI Technical Summary

Problems solved by technology

At present, my country's potassium chloride products are mainly powder products, which have the disadvantages of easy dust, poor fluidity, and easy hardening after long-term storage. However, due to the viscosity and poor plasticity of powdery potassium chloride itself, conventional production processes are difficult. Granulated

Most of the existing methods for producing potassium chloride granular fertilizers are produced by extrusion granulation, and the produced potassium chloride particles have irregular and angular appearance, which is not conducive to fertilizer blending and distribution; the chlorine produced by extrusion granulation Potassium is low in strength, and it is easy to produce powder to block the equipment during production, resulting in the failure of normal production; moreover, it is necessary to add a high proportion of auxiliary granulation raw materials, which increases the cost of the formulation, and the potassium content also decreases accordingly