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
段提出了改进，
段采用针矿法和
联合两
法来；
物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段提出了改进，段采用针矿法和联合两法来；
Metal hydroxides like aluminium trihydroxide (ATH) or magnesium dihydroxide (MDH) are commonly used halogen-free flame retardants in polyolefins.
金属物如铝（ATH）或镁（MDH）是常用的无卤阻燃体系。
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