摘要
介绍一种由氢氧化铝代替铝土矿生产食品添加剂明矾(十二水合硫酸铝钾)的新工艺。使用氢氧化铝与硫酸、硫酸钾在搪瓷反应釜内一步反应,再通过结晶、破碎、包装等工序,得到优质的明矾产品。解决了用铝土矿为原料生产明矾产品带来的重金属超标问题,并且大大缩短了工艺流程,减少了能源消耗同时杜绝了矿渣的产生。以氢氧化铝为原料生产食品添加剂明矾具有工艺流程短、环保、安全、产品质量好等特点。
A new technology,which uses aluminum hydroxide instead of bauxite for the production of food additive alum was introduced.In the process, aluminum hydroxide, sulfuric acid, and potassium sulfate completely reacted in an enamel reactor. And then high-quality alum could be obtained through the procedures, such as crystallization, crushing, and packing.The new technology solved the problem of exceeded heavy metals when using bauxite as raw material.Furthermore, it greatly shortened the process flow, reduced energy consumption and prevented the generation of slag.Therefore, the new technology has many advantages, such as short flow, environmental-friendly, safety, and high-quality.
出处
《无机盐工业》
CAS
北大核心
2013年第9期35-36,共2页
Inorganic Chemicals Industry
关键词
明矾
食品添加剂
节能减排
氢氧化铝
重金属
alum
food additives
energy conservation
aluminum hydroxide
heavy metal
