High-nitrogen suspension-type liquid fertilizer and preparation method thereof

Abstract

The invention discloses a high-nitrogen suspension-type liquid fertilizer which comprises the following components in percentage by weight: 50-80% of saturated mother solution and 20-50% of solid-liquid mixture. The saturated mother solution comprises the following components in parts by weight: 0-6 parts of potassium humate, 20-50 parts of nitrogen fertilizer, 5-20 parts of potassium fertilizer and 5-30 parts of water. The solid-liquid mixture comprises the following components in parts by weight: 5-20 parts of phosphate fertilizer, 0.2-1 part of minor element raw material, 70-100 parts of water and 5-26 parts of assistant. The suspension-type product has the advantages of excellent stability, excellent uniformity, excellent flowability, no stratification or precipitation after long time, high cost benefit and lower cost, and implements the high-concentration formula.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilizers, and in particular relates to a high-nitrogen suspended liquid fertilizer and a preparation method thereof. Background technique [0002] The growth of crops is increasingly dependent on chemical fertilizers, and its role is becoming increasingly prominent. With the development of modern agricultural facilities, application technologies such as spraying, dripping, and irrigation have begun to be popularized and applied across the country, and the matching water-soluble fertilizers have gradually attracted attention. At the same time, there is currently an overcapacity of nitrogen fertilizers, phosphate fertilizers, and compound fertilizers, and the industry needs to find a way out, which brings new opportunities for the rapid development of water-soluble fertilizers. [0003] However, the NY1107-2010 standard promulgated in 2009 strictly restricts water-soluble fertilizers with a...

AI Technical Summary

Problems solved by technology

For this problem, thickeners are usually used in the prior art to increase the viscosity of the system and prevent the particles from sinking, but the addition of thickeners alone cannot completely solve the problem of system stability

Clay minerals can also be used, but they have the disadvantage of low viscosity contribution and require a short storage time

Chinese patent 200910192150.6 discloses a suspension-type liquid compound fertilizer and its preparation method. It uses cellulose, 4-12% hydroxyethyl cellulose. This solution has a large proportion of cellulose added, high cost, and the stability of the final product bad

Chinese patent 201410208635.0 discloses a suspending agent and a method of using a suspending agent to solve the stratification of high-concentration liquid fertilizers, in which xanthan gum, polyglutamic acid, and active clay are used at a ratio of 2:3-5:8-10 to form a composite suspension agent to increase viscosity, but this solution does not take advantage of the dispersing properties of surfactants

In addition, in the above two inventions, there are many solid particles in the suspension system, which is not conducive to maintaining good stability of the suspension liquid fertilizer during storage.

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