磷石膏提纯增白实验研究  

Experimental study on purification and whitening of phosphogypsum

作　　者：沈维云[1,2] 郑光明 孙桦林[2] 李防 汪凤玲 祝贺[2] 赵春洋 SHEN Weiyun;ZHENG Guangming;SUN Hualin;LI Fang;WANG Fengling;ZHU He;ZHAO Chunyang(Hubei Xingfa Chemicals Group Co.,Ltd.,Xingshan 443700,China;Yidu Xingfa Chemical Co.,Ltd.,Yidu 443300,China)

机构地区：[1]湖北兴发化工集团股份有限公司,湖北兴山443700 [2]宜都兴发化工有限公司,湖北宜都443300

出　　处：《磷肥与复肥》2022年第2期5-6,28,共3页Phosphate & Compound Fertilizer

基　　金：国家重点研发计划(2019YFC1905801)。

摘　　要：针对磷石膏品质差、白度低的问题,利用浮选法开展提纯增白实验。结果表明:在硫酸用量3 kg/t、WS-1用量0.3 kg/t的条件下,采用反浮选一次粗选、正浮选一粗五精反-正浮选流程,可获得磷石膏纯度99.12%、产率63.12%、白度81%的良好指标。对浮选所获得的产品采取梯级利用的方式,可获得更高的附加值。In order to solve the problem of poor quality and low whiteness of phosphogypsum,the purification and whitening test is carried out by flotation method.The results show that the dosage of sulfuric acid is 3 kg/t,the dosage of WS-1 is 0.3 kg/t,by adopting the reverse-positive flotation including a roughing reverse flotation and the positive flotation of a roughing and five finishing,the good indexes of phosphogypsum with purity 99.12%,yield 63.12%and whiteness 81%can be obtained.The products obtained by flotation are used by cascade utilization,added value has been improved.

关 键 词：磷石膏 浮选 梯级利用 

分 类 号：X781[环境科学与工程—环境工程]