凹凸棒土在油枯型有机无机复混肥中的造粒技术研究  

Study on granulation technology of attapulgite in oil cake organic-inorganic compound fertilizer

作　　者：张中正 王国栋 孙玉翠 李莹莹 李恒 朱远蹠 ZHANG Zhongzheng;WANG Guodong;SUN Yucui;LI Yingying;LI Heng;ZHU Yuanzhi(Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Province Key Laboratory of Energy Saving in Phosphorus Chemical Engineering and New Phosphorus Materials,Kunming 650500,China;Yunnan Yuntianhua Co.,Ltd.,Kunming 650228,China)

机构地区：[1]昆明理工大学化学工程学院,云南昆明650500 [2]云南省磷化工节能与新材料重点实验室,云南昆明650500 [3]云南云天化股份有限公司,云南昆明650228

出　　处：《生态产业科学与磷氟工程》2024年第7期49-51,75,共4页Eco-industry Science & Phosphorus Fluorine Engineering

基　　金：洱海流域农业高质量发展与面源污染防控协同的创新模式构建与示范(202202AEO90034)。

摘　　要：油枯型有机无机复混肥采用圆盘造粒工艺成粒率低,颗粒强度小,运输时容易粉化,严重影响了产品的外观品质。凹凸棒土由于吸附力强、黏结性好,是一种较好的复合肥料造粒剂,但在油枯型有机无机复混肥中的研究很少。选用圆盘造粒工艺,研究不同添加量的凹凸棒土对油枯型有机无机复混肥成粒的颗粒强度、成粒率、崩解速率以及堆密度的影响。研究结果表明:当凹凸棒土的添加量为0.5%时,油枯型有机无机复混肥的颗粒强度最高,平均值达到了8.35 N,并且在此添加量下,颗粒成粒率为55%,崩解速率为4.34 g/min.The oil cake organic-inorganic compound fertilizer has a low rate of granulation,weak particle strength,and is prone to pulverization during transportation using the disc granulation process.This significantly impacts the overall quality of the product's appearance.Attapulgite is an effective granulation agent for compound fertilizers due to its powerful adsorption and strong adhesion.However,there is limited research on oil cake organic-inorganic compound fertilizer.This study utilized the disc granulation process to investigate the impact of varying quantities of attapulgite on the strength,granulation rate,disintegration rate and bulk density of oil cake organic-inorganic compound fertilizer.The findings indicate that when the amount of attapulgite added to the oil cake organic-inorganic compound fertilizer is 0.5%,the particle strength is the highest,with the average value of 8.35 N.At this addition level,the particle granulation rate is 55% and the disintegration rate is 4.34g/min.

关 键 词：凹凸棒土 油枯型有机无机复混肥 造粒剂 圆盘造粒 颗粒强度 

分 类 号：TQ444[化学工程—化学肥料工业]