hydroxid

Some improvement was taken on the basis of the traditional process in this paper.Iron was removed with the jarosite process and ferric hydroxid;

本文在传统工艺的基础上对其中的一些阶段提出了改进，除铁阶段采用针铁矿法铁联合两法来除铁；

Metal hydroxides like aluminium trihydroxide (ATH) or magnesium dihydroxide (MDH) are commonly used halogen-free flame retardants in polyolefins.

金物如铝（ATH）或镁（MDH）是常用的无卤阻燃体系。