低温煅烧过程中铵盐对磷石膏的影响  

Effect of ammonium salt on phosphogypsum during low temperature calcination

作　　者：柳凌 王斌杰 汪小平 LIU Ling;WANG Binjie;WANG Xiaoping(Hubei Yihua Phosphogypsum Technology Development Co.,Ltd.,Yichang 443000,China)

机构地区：[1]湖北宜化磷石膏科技开发有限公司,湖北宜昌443000

出　　处：《生态产业科学与磷氟工程》2024年第8期17-20,共4页Eco-industry Science & Phosphorus Fluorine Engineering

摘　　要：以磷石膏混合铵盐添加剂进行过低温煅烧处理,探索铵盐在低温煅烧过程中对磷石膏中可溶磷、氟的影响。结果表明:挥发酸形成的铵盐能够有效降低磷石膏中可溶磷、氟的含量;当温度大于150℃时,铵盐对磷石膏中可溶磷、氟的影响最大,即磷石膏处理的效果最好;加入乙酸铵的磷石膏煅烧后强度明显提高。The effect of ammonium salt on soluble phosphorus and fluorine in phosphogypsum(PG)during the low temperature calcination process is explored by using PG raw materials and ammonium salt additives.The results show that the ammonium salt formed by volatile acid can effectively reduce the content of soluble phosphorus and fluorine in PG;When the temperature is higher than 150℃,the ammonium salt has the greatest influence on soluble phosphorus and fluorine in PG,the effect of PG treatment is the best,and the strength of PG added with ammonium acetate after calcination is also significantly improved.

关 键 词：铵盐 磷石膏 可溶磷 可溶氟 低温煅烧 

分 类 号：TQ177.37[化学工程—硅酸盐工业]