摘要
为改善聚氯化铝（PAC）生产中产品的过滤效果,从工艺、原料、产品3个方面研究了反应时间、过滤温度、铝酸钙粉用量、硫酸根离子含量、三价铁离子含量、氧化铝含量、盐基度等多个因素对PAC过滤效果的影响.研究表明,反应时间、过滤温度、铝酸钙粉用量、原料中硫酸根离子含量对PAC的过滤效果均有显著影响.为确保PAC的可滤性,建议生产中反应时间为60 min,过滤温度为60～80℃,尽量少用铝酸钙粉,尽量选用不含硫酸根离子的原料酸.产品中氧化铝含量的变化对PAC的过滤效果有一定影响,但不会改变产品的可滤性.原料中三价铁离子含量、产品盐基度的变化对PAC的过滤效果无显著影响.
In order to improve filtering effect of poly aluminium chloride （PAC）,the influences of reaction time,filtering temperature, dosage of Ca （AlO2）2, contents of SO4 2-, Fe3＋, and A1203, and basicity on PAC filtering effect were investigated from three aspects of process,raw materials,and product.Results showed that reaction time,filtering temperature,dosage of Ca （AlO2）2, and SO2- content in the raw material all had remarkable influence on filtering effect of PAC.To ensure filterability of PAC, reaction time of 60 min and filtering temperature at 60-80 ℃ were suggested, dosages of Ca（AlO2）2 and SO42- in acid were less as far as possible.Changes of Al2O3 content in the product had certain influence on filtering effect of PAC, but would not change filterability of PAC.Changes of Fe3＋ in raw materials and basicity of PAC had no significant influence on fihering effect of PAC.
出处
《无机盐工业》
CAS
北大核心
2014年第4期49-52,共4页
Inorganic Chemicals Industry
关键词
聚氯化铝
过滤性能
水不溶物
poly aluminium chloride
filtration performance
water insolubles
