free silica

基本解释

A method for chemical phase analysis of free silica in limestone was discussed in this paper.
介绍了石灰岩中游离二氧化硅的化学物相分析方法。
Free silica in geological exploration dust is measured by both Xray diffraction and pyrophosphoric acid methods.
对粉尘中游离二氧化硅含量进行了X线衍射法和焦磷酸消化法的对比测定。
Basic principle, experiment condition, operating process, method and steps of X-ray diffraction method to determine free silica content of respirable dust in mines are introduced in this paper.
本文介绍了应用X射线衍射仪测定矿山呼吸性粉尘中游离二氧化硅含量的基本原理、实验条件以及操作过程、方法步骤等。