A kind of ammonium chloride anti-caking agent and preparation method thereof

Abstract

The invention discloses an ammonium chloride anti-blocking agent and a preparation method thereof. The ammonium chloride anti-blocking agent is composed of a film-former, a dispersant, a crystal control agent and water. The preparation method comprises the following steps: adding water into a reaction kettle with a stirring device and a heating device, after the water is heated, adding the film-former, and carrying out heat preservation until the obtained mixture is completely dissolved and shown in a clear and transparent mode; then, reducing the temperature to room temperature, adding the dispersant and the crystal control agent, and completely and uniformly stirring the obtained mixture, so that a transparent anti-blocking agent is obtained. The anti-blocking agent has the advantages of good hydrophilicity, no dust and no pollution, and is simple to prepare, low in cost, convenient to add, little in use amount and good in anti-blocking effect, and a human body is not damaged.

Description

technical field [0001] The invention belongs to the technical field of chemical additives, and in particular relates to an ammonium chloride anti-caking agent and a preparation method thereof. Background technique [0002] Ammonium chloride is an important industrial raw material and a good nitrogen fertilizer. There are products in the form of powder, granular, crystalline, spherical, etc., but no matter what form of ammonium chloride, there is a problem of agglomeration. The reason for the block is very complicated, mainly because ammonium chloride contains a certain amount of water. Due to changes in external conditions (such as temperature, humidity, pressure, etc.), the surface of ammonium chloride crystals is repeatedly dissolved and recrystallized. The "crystal bridge" phenomenon occurs between ammonium grains, causing agglomeration, which brings great inconvenience to transportation, storage and user use. [0003] For the caking problem of ammonium chloride, there a...

AI Technical Summary

Problems solved by technology

Patent Nos. CN102079676A and CN1099058A disclose a kind of ammonium chloride anti-caking agent, which contains polyacrylate, which is a kind of refractory material. This kind of anti-caking agent simply solves the problem of anti-caking. There is no promotion for crops and protection of the soil environment; Patent No. CN101112997A discloses an ammonium chloride anti-caking agent consisting of a composition of aspartic acid polymer and simulated superoxide dismutase, although the anti-caking The effect is not bad, but the preparation of the anti-caking agent is complicated and the cost is high; the patent No. CN101659421A discloses an ammonium chloride anti-caking agent, which is coated with tricalcium phosphate powder on the surface of the ammonium chloride crystal, thereby inhibiting the "crystal bridge" "growth, preventing caking, although the processing cost is low, the process is simple and environmentally friendly, but the amount of addition is large, thereby reducing the content of active ingredients, the patent No. CN102190532A discloses a kind of ammonium chloride anti-caking agent, composed of dispersant , crystal control agent and hydrophobic agent, the anti-caking agent cannot be added directly, it needs to be dissolved in water before use