Why is the total amount of nutrients in the compound fertilizer formula lower after calculating the amounts of each ingredient?
Thread Content
When calculating the formula for compound fertilizers, including the fillers, I find that the total amount of various nutrients calculated comes out to be slightly less; meanwhile, the amount of high-nutrient components is slightly higher. I would appreciate some guidance on this matter. Thank you!
It’s not clear enough; please explain in more detail
Using 1000 KG as the base, a 13-5-7 formula is calculated; the total weight of the N source, P source, K source, and filler used in this formula amounts to only 991.11. I would appreciate some guidance on this
If calculated based on 1000 kilograms, and the total weight after mixing is less than 1000 kilograms, then the actual nutrient content may be higher; conversely, if it is greater than 1000 kilograms, the actual nutrient content may be lower. After calculating all the materials, it is necessary to verify the ratio in which they are combined. In your case, it is appropriate to increase the amount of filler and reduce the amounts of N, P, and K sources. The backward calculation will differ from the actual value. The key is the verification after the calculation. Whether it’s 990 or 1010, it doesn’t make much of a difference; a slight adjustment can be made after the tests are conducted.
Thank you for the answer. I’m a beginner; could you advise me whether it’s better to use a higher or lower ratio in actual production? In the actual feeding process, the amount of P source used was only 5.6; how can it be determined that there are more than 6 points? Where did this P source come from? I can’t figure it out. What is the difference between the theoretical moisture content and the actual moisture content produced? I’m looking for some experience-based insights; of course, it also depends on the operating procedures. Could you share some experience?
“In actual production, the question of whether the ratio should be higher or lower is meaningless. It depends on the difference between the calculated value and the actual value. Keep exploring; the key is to look at the difference between the calculated value and the actual value. The high level of phosphorus nutrients is due to the lower moisture content in the ammonium phosphate raw material compared to that of the finished product. Moreover, the moisture content of the finished product is not determined through calculation; it is controlled during the manufacturing process, depending on the moisture content of the raw materials, the drying temperature, and the production volume. One must summarize experience from production to adjust the process parameters accordingly
Thank you, I’m looking for the correct answer. The issue is simply that the technical skills of the staff involved are poor, which results in substandard quality after just half a day of work; P
First, meet the requirements; a higher nutrient level does not mean failure
Some fillers and the like are also added, which do not provide nutrients.
There is a reason for using the moisture content of the raw materials on a dry basis; for example, if the moisture content of the material is 5% and a compound fertilizer with a moisture content of 2% is to be produced, the theoretical amount of raw materials required is 1,030 kilograms, which is sufficient to produce one ton of product. If the moisture content of the material is below 2%, the actual amount of raw material used is less than 1000 kilograms.