High-nitrogen nitro-compound fertilizer anti-caking agent and preparation method thereof

Abstract

The invention relates to a high-nitrogen nitro-compound fertilizer anti-caking agent and a preparation method thereof. The high-nitrogen nitro-compound fertilizer anti-caking agent comprises the following components by the weight percentage: 90-95% of inorganic powder and 5-10% of a modifier, wherein the inorganic powder is pyrophyllite and magnesite mixture powder, and the modifier is alkylamide.The preparation method of the high-nitrogen nitro-compound fertilizer anti-caking agent comprises the steps: adding the 600-800-mesh inorganic powder and the modifier into a powder modifier, controlling the temperature to be 60-70 DEG C, stirring for 20-30 min, modifying, and cooling to obtain the high-nitrogen nitro-compound fertilizer anti-caking agent. The high-nitrogen nitro-compound fertilizer anti-caking agent is low in cost, environmentally friendly and good in anti-caking effect.

Description

technical field [0001] The invention relates to an anti-caking agent for compound fertilizers, in particular to an anti-caking agent for high-nitrogen nitro compound fertilizers. Background technique [0002] At present, the main problem in the production of high-nitrogen nitro compound fertilizers in my country is that the products are easy to agglomerate, which makes it difficult for farmers to use and seriously affects the product quality of production enterprises. Enterprises have to use various anti-caking agents to achieve the purpose of anti-caking. In order to solve the caking problem of high-nitrogen nitro compound fertilizers, various fertilizer companies and scientific research institutes have conducted in-depth research on this subject, and developed targeted anti-caking agents for different types of fertilizers. [0003] There are three kinds of anti-caking agents for compound fertilizers: powder type, water type, and oil-soluble type. Among them, the powder typ...

AI Technical Summary

Problems solved by technology

Water-solvent anti-caking agents are surfactants dissolved in water, mainly including anionic surfactants, sulfates, sulfonates, and phosphates, and cationic surfactants mainly include octadecylamine and its Salts, non-ionic surfactants include polyethylene oxide, esters, low molecular weight aldehydes and ketones, which are sprayed on the surface of fertilizers to reduce the surface tension of fertilizers and have an anti-caking effect; oil-solvent anti-caking The fertilizer has the advantages of convenient use and good effect, but the traditional method needs to add mineral oil as a solvent. These mineral oils are difficult to degrade when they enter the soil with fertilizers, causing a certain degree of pollution to the soil and the surrounding environment.

[0004] In order to meet the above-mentioned market demand, the patent application No. CN201410604026.7 "A degradable compound fertilizer anti-caking agent and its preparation method and application" utilizes fatty amine or its salt, stearic acid, oleic acid, refined glycerin and waste A degradable compound fertilizer anti-caking agent is prepared from edible oil. Although certain hydrophobic substances are added, the overall effect of moisture-proof and waterproof is not ideal all the time; the patent application number is "A high-nitrogen compound fertilizer anti-caking Blocking agent and its preparation and application" uses paraffin, alkylamine, Span-80, and mineral oil as raw materials to prepare a paste-like oil-soluble anti-caking agent. This technology mainly uses paraffin and other hydrophobic substances to wrap the fertilizer surface to form a layer Hydrophobic film, so as to prevent the formation of caking, but this kind of anti-caking agent uses paraffin, mineral oil and other refractory raw materials, so the prepared anti-caking agent is also difficult to be degraded; the patent application number is CN201110008370.6 "An anti-caking agent for straw powder-based compound fertilizer" is an anti-caking agent prepared by using six components of 60-3000 mesh straw powder, stearic acid, stearyl amine, alcohol amine, white oil or solid paraffin and natural oil. The anti-caking agent has biodegradability and good environmental friendliness, and long-term use will not cause adverse effects on the soil, crops and farm environment, but the addition of this anti-caking agent in the compound fertilizer is too large, and Excessive addition of non-nutrient elements will also increase the formula cost of compound fertilizer, so the actual use value of straw anti-caking agent is not high