Silica is mainly used in acid refractory bricks for metallurgical industry.

硅石主要用于冶金工业用的酸性耐火砖。

The appearance of crystalline silica is generally milky white, off-white, light yellow, and reddish brown.

结晶硅石外观一般呈乳白色、灰白色、淡黄色以及红褐色。

Silica is insoluble in water and does not react with water.

硅石不溶于水也不跟水反应。

Silica is used in the production of glass products.

二氧化硅可用于生产玻璃制品

The fumed silica can also be used.

也可以使用气相二氧化硅。

Sodium silicate was used as the silica source.

硅酸钠用作硅源。

These systems can use fluorides for silica removal.

这些系统可用氟化物去除二氧化硅。

Silica Gel - is silicon dioxide (SiO2), an amorphous form of silica.

硅胶-是二氧化硅(SiCO2)一种无固定形式的硅。

As the coal burns, particles of silica are released with the vapor and inhaled.

随着煤的燃烧，二氧化硅的颗粒跟随水蒸气被释放到大气中，然后被人体吸入。