Production of highly soluble foliar fertilizer in a spouted bed dryer

IF 1.2 4区农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY

Ciencia E Agrotecnologia Pub Date : 2023-05-26 DOI:10.1590/1413-7054202347000523

Ana Carolina Ribeiro Stoppe, Mário Sérgio da Luz, José Luiz Vieira Neto, K. G. Santos

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Abstract

ABSTRACT The drying process can be useful to change the particulate structure, improving the powder solubility. In this study, we investigated the drying of foliar fertilizer in a spouted bed using polyethylene pellets as inert particles to improve its solubility. A 23 factorial experimental design was used to evaluate how the powder yield and moisture were affected by the feeding time, intermittency time, and feed atomizer position. The spouting instability caused powder retention on the bed wall, which decreased the powder recovery efficiency by 2.3-26.6%. Although the powder recovery efficiency was low, the solubility time was reduced by 5.9 times, probably due to particle agglomeration, which increased the amorphous phase of the fertilizer. Design alterations, suggested by the CFD data, can increase spouted bed stability and facilitate centralized spouting. Based on this, the spouted bed drying technique was applied, and it effectively increased the solubility of commercial fertilizer, thus, incorporating more desirable characteristics for field applications.

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在喷床干燥机中生产高可溶性叶面肥料

干燥过程可以有效改变颗粒结构，提高粉体的溶解度。在这项研究中，我们研究了用聚乙烯颗粒作为惰性颗粒在喷淋床上干燥叶面肥料，以提高其溶解度。采用23因子试验设计，考察进料时间、间歇时间和进料雾化器位置对粉剂产率和水分的影响。喷淋不稳定导致粉体滞留在床壁上，使粉体回收率降低2.3 ~ 26.6%。虽然粉末回收率低，但溶解时间减少了5.9倍，可能是由于颗粒团聚，增加了肥料的非晶态相。CFD数据表明，改变设计可以提高喷床的稳定性，有利于集中喷床。在此基础上，应用了喷床干燥技术，有效地提高了商品肥料的溶解度，从而具有更理想的田间应用特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ciencia E Agrotecnologia 农林科学-农业综合

CiteScore

2.30

自引率

9.10%

发文量

审稿时长

6-12 weeks

期刊介绍： A Ciência e Agrotecnologia, editada a cada 2 meses pela Editora da Universidade Federal de Lavras (UFLA), publica artigos científicos de interesse agropecuário elaborados por membros da comunidade científica nacional e internacional. A revista é distribuída em âmbito nacional e internacional para bibliotecas de Faculdades, Universidades e Instituições de Pesquisa.