摘要
以活性炭为脱色剂、碳酸钠为脱氟剂,对净化湿法磷酸工艺中的影响因素进行研究,确定了湿法磷酸脱色脱氟同步进行的最佳工艺条件:采用1.0%湿法磷酸用量的活性炭,并添加1.1倍理论脱氟用量的Na2CO3,在50℃下反应120 min,处理后的湿法磷酸透光率达到80%以上,脱氟率也高于70%。
The influencing factors of purified wet-process phosphoric acid with activated carbon and Na2 CO3 as decoloring agent and defluorinating agent were studied. The best technological conditions were as follows：dosage of activated carbon was 1. 0% of wet-process phosphoric acid,dosage of Na2 CO3 was 1. 1 times theoretical amount,reaction temperature was 50 ℃ and time was 120 min. Under these condi-tions,light transmittance reached above 80% and the defluorination rate reached above 70%.
出处
《应用化工》
CAS
CSCD
2014年第8期1437-1438,1441,共3页
Applied Chemical Industry
基金
四川省教育厅人文社科基地项目(SCKCZY2011-YB002)
自贡市科技局项目(2013ZC07)
关键词
湿法磷酸
脱色
脱氟
wet-process phosphoric acid
decolorization
defluorination
