In the granulation process in compound fertilizer production, setting aside operational factors, is there any theory that can be used to determine whether a given formula will allow for granulation?
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In the granulation process of compound fertilizer production, setting aside operational factors, is there any theory that can be used to determine whether a given formula will allow for granulation? I would appreciate some guidance from an expert.
In the formulation of compound fertilizers, the proportions of the various ingredients can be calculated, but the process of forming pellets is mainly adjusted through experimentation and practical methods. Adding certain materials to the formula to improve the pelletization rate is also a common approach; for example, in ammonium chloride-gypsum-based compound fertilizers, adding ammonium sulfate proves to be effective in enhancing the pelletization rate. The optimal formulation can be determined through small-scale experiments using granulation machines. Strictly speaking, the formulation of compound fertilizers is determined based on the nutrient requirements of crops, rather than through calculations. Books on the formulation design of compound fertilizers are also available at Xinhua Bookstore.
Upstairs, and even further upstairs – the original poster is asking about compound fertilizers. There are many different types of particles used in compound fertilizers. I think that as long as it’s possible to produce them, it’s feasible to granulate them; it’s just that different production processes result in particles with different appearances. At least the particles can be bonded together into granules, it’s just that they don’t look very attractive
1. Book title: Handbook of Compound Fertilizer Production Technology 2. Published by Chemical Industry Press 3. Editor-in-chief: Fang Tianhan 4. Publication date: First edition, February 2003 5. Overview: This book provides information on formula design for various crops as well as details on the production processes. This post was last edited by Canghai Yili Sha on 2009-3-31 19:26.]
It seems there is no relevant calculation method; agree with the second floor
There is no specific calculation method for this. The simplest approach I used in the past was to prepare the formula first, then use a basin as a circular dish for experimentation; while using a sprayer, one would shake the basin to see if particles could be formed :) This post was last edited by yulin1973 on 2009-3-31 at 21:44
The proportions in a formula can be calculated, but as for the balling rate, I haven’t come across any information suggesting that it can be calculated either. There are many factors to consider when forming balls from materials, including the physical and chemical properties of the materials themselves, the reactions that occur between different materials, as well as the temperature and humidity conditions during granulation. One can start by trying out the method mentioned above on a small scale; in actual production, however, it’s necessary to rely on practical experience
Granulability cannot be determined through calculation; it is primarily related to the compatibility of the raw materials, the choice of binders (fillers), and the formulation. Generally, compound fertilizers with low nutrient contents have better granulability, while those with high levels of nitrogen and phosphorus are easier to granulate; formulations with high potassium content are more difficult to granulate. The granulation conditions can be adjusted by modifying the return ratio.
It can be calculated, but it generally results in particles
1. The nutrient structure required should be taken into consideration. 2. It is necessary to check whether the viscosity meets the requirements for granulation under normal experimental conditions. 3. If viscosity is insufficient, liquid viscous materials can be added to facilitate granulation. 4. The economic viability of the formula should also be considered
The granulation rate mainly depends on the viscosity and compatibility of various materials. You can refer to some materials on fertilizer production, which provide information on the viscosity of various substances and their compatibility with one another. . . . Generally, a pilot test is carried out first. . . Agree with the view on the second floor. . . :handshake
Once I have access to the various parameters in your production process, it will be possible to calculate the degree of adhesion in advance. A rough estimate of the granulation efficiency of the granulation cylinder can be made, though it won’t be very accurate. For detailed information, please contact QQ157639185