利用粉煤灰制备硅肥的初步研究  

Preliminary study on preparation of silicon fertilizer using illite

作　　者：周雨锌 白雨停 韩志超 刘东旭 梁运江[1] ZHOU Yuxin;BAI Yuting;HAN Zhichao;LIU Dongxu;LIANG Yunjiang(Agricultural College of Yanbian University,Yanji Jilin 133002,China)

机构地区：[1]延边大学农学院,吉林延吉133002

出　　处：《延边大学农学学报》2023年第4期42-46,共5页Agricultural Science Journal of Yanbian University

基　　金：中国科学院A类战略性先导科技专项(XDA28080400);延边大学校企合作项目[2021]8号。

摘　　要：选择高温煅烧并引入混合助剂作为粉煤灰制备硅肥的方法,通过3414试验,优化生产硅肥的工艺条件,研究结果对指导硅肥生产具有重要的理论和实践意义。结果表明:在制备粉煤灰硅肥的3个影响因素(煅烧温度、粉煤灰与助剂的比例、煅烧时间)中,煅烧时间对粉煤灰有效二氧化硅含量的影响稍大,其次是粉煤灰与助剂的比例,影响最小的因素是煅烧温度。粉煤灰与混合助剂(Na_(2)CO_(3)∶Li_(2)CO_(3)=1∶0.14)的最佳配比为1∶1,最佳煅烧温度为800℃,煅烧时间为39 min,此时粉煤灰的有效二氧化硅含量达21.66%。符合国家标准要求的20%以上。Silica fertilizer was produced by high-temperature calcination and introduction of mixed additives as fly ash,and the process conditions were optimized by 3414 tests,which is of great theoretical and practical importance in guiding the production of silica fertilizer.The results of this study showed that among the three factors(calcination temperature,fly ash/additive ratio,and calcination time)affecting the production of silica fertilizer from fly ash,the calcination time had a strong effect on the effective silica content of the fly ash,then the fly ash/additive ratio,followed by the effect of calcination temperature.The optimal conditions of the three factors were:1:1 of the ration of fly ash to mixed additives(Na_(2)CO_(3)∶Li_(2)CO_(3)=1∶0.14),800℃ of the calcination temperature,and 39 min of the calcination time.The effective silica content of fly ash reached 21.66%,which meets the national standard requirement that the effective silica content is more than 20%.

关 键 词：粉煤灰 3414设计 硅肥 因子主效应分析 频率分析 

分 类 号：S143.71[农业科学—肥料学]